Rapid detection device for surface defects of concrete sample blocks

Abstract

This invention provides a rapid detection device for surface defects in concrete samples, alleviating the problem that existing technologies cannot continuously and intuitively analyze surface depressions and protrusions with a height not less than a preset threshold. In this design, a first color-marking cylinder is used to contact the surface of the concrete sample with a height not lower than a reference plane and apply a first color mark, without contacting the depression area; a second color-marking cylinder is only used to contact the protrusions exceeding the threshold on the concrete sample and apply a second color mark, without contacting the reference plane, the depression area, or the area with a protrusion height less than the preset threshold. This design, through different mark combinations, can intuitively and quickly distinguish between depression areas, areas within the allowable error range, and protrusions exceeding the threshold.

Description

Technical Field

[0001] This utility model relates to the field of building material testing technology, and in particular to a rapid detection device for surface defects of concrete sample blocks to be tested. Background Technology

[0002] After concrete is poured, it undergoes volume shrinkage or expansion due to hydration reactions, water evaporation, temperature changes, and the inherent composition of the material. Shrinkage primarily includes drying shrinkage, autogenous shrinkage, and carbonation shrinkage, manifesting as depressions, cracks, or warping of the concrete surface. Expansion mainly includes alkali-aggregate reaction, delayed ettringite formation, and sulfate attack, manifesting as bulges, bumps, or misalignments on the concrete surface. These abnormal surface morphologies caused by volume changes not only affect the appearance quality of the concrete sample but also reduce its durability, waterproofing performance, and load-bearing capacity, and in severe cases, even affect the installation accuracy and safety of the superstructure. Currently, the detection of the surface morphology of concrete samples mainly relies on manual ruler sampling or laser profilometry. Manual sampling, using a three-meter straightedge and feeler gauge for point-by-point sampling, has extremely low coverage, a high risk of missed detection, and cannot distinguish whether surface anomalies are caused by shrinkage or expansion. While laser profilometers can achieve continuous detection, they are expensive, complex to operate, unsuitable for rapid on-site inspection, and cannot simultaneously mark anomaly points, requiring relocation of defects during subsequent repairs. Furthermore, although strain gauge or displacement gauge monitoring can quantitatively measure shrinkage or expansion strain, it is a point-based monitoring method, unable to capture the overall surface morphology distribution, and the embedded sensors can damage the structure.

[0003] In summary, existing technologies cannot provide a continuous and intuitive analysis of the surface depressions and protrusions of the concrete sample to be tested. Utility Model Content

[0004] This invention provides a rapid detection device for surface defects of concrete samples, which alleviates the problem that existing technologies cannot continuously and intuitively analyze the surface depressions and protrusions of concrete samples.

[0005] To alleviate the above-mentioned technical problems, the technical solution provided by this utility model is as follows: A rapid detection device for surface defects of concrete sample blocks includes: Delivery and marking agencies; The delivery mechanism includes a mobile platform for supporting the concrete sample block to be tested. The marking mechanism is installed on the delivery mechanism and includes a first color marking component and a second color marking component; The first color marking component includes a first color marking cylinder. In the initial detection state, the lowest point of the outer peripheral surface of the first color marking cylinder is located at a first height. The plane defined by the lowest point of the outer peripheral surface of the first color marking cylinder is a reference plane. The first color marking cylinder is used to contact the surface of the concrete sample block to be tested with a height not lower than the reference plane and apply a first color mark. The second color marking component includes a second color marking cylinder. In the initial detection state, the lowest point of the outer peripheral surface of the second color marking cylinder is located at a second height, which is higher than the first height. The second color marking cylinder is used to contact the surface of the concrete sample block to be tested at a height not lower than the second height and apply a second color mark. Wherein, the first color mark and the second color mark are visually distinguishable, and the height difference between the second height and the first height constitutes a preset threshold for determining protrusion defects.

[0006] Furthermore, The first color marking component further includes a first rolling cylinder and a first coloring cylinder; The first rolling cylinder is coaxially arranged with the first color marking cylinder and is located inside the first color marking cylinder; The first coloring cylinder is located above and tangent to the first color marking cylinder, and the first coloring cylinder is used to transfer pigment to the first color marking cylinder.

[0007] Furthermore, The second color marking component also includes a second rolling cylinder and a second coloring cylinder; The second rolling cylinder is coaxially arranged with the second color marking cylinder and is located inside the second color marking cylinder; The second coloring cylinder is located above and tangent to the second color marking cylinder, and is used to transfer pigment to the second color marking cylinder.

[0008] Furthermore, The first color marking component also includes a first support frame; The first support frame has two mounting holes from top to bottom; The central shaft of the first coloring cylinder is inserted into the mounting hole at the top. The central shaft of the first rolling cylinder is inserted into the mounting hole at the bottom.

[0009] Furthermore, The first color marking component also includes a first adjusting lever and a first spring; The first support frame is mounted on two first adjusting rods on both sides, and the first spring is fitted onto the first adjusting rods and located below the first support frame to provide elastic buffer support for the up and down floating of the first support frame.

[0010] Furthermore, The second color marking component also includes a second support frame; The second support frame has two mounting holes from top to bottom; The central shaft of the second coloring cylinder is inserted into the mounting hole at the top; The central shaft of the second rolling cylinder is inserted into the mounting hole at the bottom.

[0011] Furthermore, The second color marking assembly also includes a second adjusting lever and a second spring; The second support frame is mounted on two second adjusting rods on both sides, and the second spring is fitted onto the second adjusting rods and located below the second support frame to provide elastic buffer support for the up and down floating of the second support frame.

[0012] Furthermore, It also includes a first support rod and a second support rod that are fixedly installed on the delivery mechanism; The first support rod is used to support and limit the lower limit position of the central axis of the first rolling cylinder, so as to limit the initial detection position of the first color mark cylinder; The second support rod is used to support and define the lower limit position of the central axis of the second rolling cylinder, so as to define the initial detection position of the second color mark cylinder.

[0013] Furthermore, The mobile platform includes two limiting parts, and a space is formed between the two limiting parts for holding the concrete sample block for testing, and the distance between the two limiting parts is adjustable.

[0014] Furthermore, The delivery mechanism also includes a support frame to which the mobile platform is slidably connected.

[0015] The beneficial effects of this utility model are analyzed as follows: The lowest point of the outer circumference of the first color-marking cylinder is located on the reference plane, used to contact and mark the reference plane and raised areas, but not in contact with recessed areas. The lowest point of the outer circumference of the second color-marking cylinder is located at a second height above the reference plane, and the height difference between the second height and the reference plane forms a preset threshold. The second color-marking cylinder is only used to contact and mark raised areas exceeding the threshold. Thus, during a single scan, recessed areas are not marked, areas located on the reference plane or with a raised height less than the preset threshold are marked only by the first color-marking cylinder, and raised areas exceeding the threshold are marked by both the first and second color-marking cylinders simultaneously. This allows for intuitive and rapid differentiation of recessed areas, areas within the allowable error range, and raised areas exceeding the threshold through different marking combinations, achieving simultaneous detection and marking. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This utility model provides an overall structural schematic diagram of the rapid detection device for surface defects of concrete sample blocks. Figure 2 This is a schematic diagram of the overall structure of the first color-marking component; Figure 3 This is a schematic diagram of the overall structure of the second color marking component; Figure 4 A front view of the first and second color mark components mounted on the support frame; Figure 5 A side view of the first color marker component or the second color marker component; Figure 6 A schematic diagram of the structure of the first or second support rod; Figure 7 This is a floor plan of the delivery facility.

[0018] icon: 100 - Marking mechanism; 110 - First color marking assembly; 111 - First color marking cylinder; 112 - First rolling cylinder; 113 - First coloring cylinder; 114 - First support frame; 115 - First adjusting rod; 120 - Second color marking assembly; 121 - Second color marking cylinder; 122 - Second rolling cylinder; 123 - Second coloring cylinder; 124 - Second support frame; 125 - Second adjusting rod; 200 - Delivery mechanism; 210 - Mobile platform; 211 - Limiting part; 220 - Support frame.

[0019] 230 - First support rod; 240 - Second support rod. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In this invention, the "reference plane" is not a predetermined absolute plane, but a relative reference plane defined by the height of the lowest point of the outer circumference of the first color marker cylinder 111 in the initial detection state. This plane serves as a benchmark for evaluating the surface flatness of the concrete sample block under test. When the surface of the concrete sample block under test is lower than this plane, it is a recessed area; when the surface of the concrete sample block under test is higher than this plane and the convex height relative to the reference plane is less than a preset threshold, it is a convex area within the allowable error range; when the convex height of the surface of the concrete sample block under test relative to the reference plane is not less than the preset threshold, it is an over-threshold convex area.

[0023] This embodiment provides a rapid detection device for surface defects in concrete sample blocks. Please refer to... Figures 1 to 7 The device includes a delivery mechanism 200 and a marking mechanism 100.

[0024] Specifically, the delivery mechanism 200 includes a moving platform 210 for supporting the concrete sample block to be tested. A marking mechanism 100 is mounted on the delivery mechanism 200 and includes a first color marking component 110 and a second color marking component 120.

[0025] The first color marking component 110 includes a first color marking cylinder 111. In the initial detection state, the first color marking cylinder 111 is located at a first height. At this time, the lowest point of the outer peripheral surface of the first color marking cylinder 111 is located at the reference plane. The first color marking cylinder 111 is used to contact the surface of the concrete sample block to be tested with a height not lower than the reference plane and to apply a mark, and it does not contact the recessed area. The second color marking component 120 includes a second color marking cylinder 121. In the initial detection state, the lowest point of the outer peripheral surface of the second color marking cylinder 121 is located at a second height, which is higher than the reference plane. The second color marking cylinder 121 is only used to contact the over-threshold protruding area of ​​the concrete sample block to be tested and apply the second color mark, and it does not contact the reference plane or the recessed area. Regarding the aforementioned preset threshold, it should be noted that: the lowest point of the outer peripheral surface of the second color marking cylinder is located at a second height higher than the reference plane, and the height difference between the second height and the reference plane is the preset threshold. It should be noted that, in this document, the over-threshold protruding area refers to the area where the protrusion height relative to the reference plane is not less than the preset threshold; the area where the protrusion height is less than the preset threshold can be considered as a surface area within the allowable error range.

[0026] In this embodiment, a first color marker cylinder 111 and a second color marker cylinder 121 with different initial heights are set, and the reference plane is used as a reference for evaluating the surface flatness of the concrete sample block to be tested. When there is a depression on the surface of the concrete sample block to be tested, its height is lower than the reference plane, so it will not touch any marker cylinder; when the surface is the reference plane, its height is flush with the reference plane, and it will only touch the lower first color marker cylinder 111; when there is a protrusion on the surface and the height of the protrusion is not less than a preset threshold, it will touch both the first color marker cylinder 111 and the higher second color marker cylinder 121; when the height of the protrusion is less than the preset threshold, it will only touch the first color marker cylinder 111, which can be regarded as a surface area within the allowable error range.

[0027] Therefore, by observing the combination of marks left on the surface of the concrete sample, one can intuitively and quickly distinguish between unmarked concave areas, areas with only the first color mark that have not exceeded the threshold, and raised areas that have exceeded the threshold and have both the first and second color marks. This purely mechanical detection method does not require complex electronic sensors, is inexpensive, and completes detection and marking simultaneously, avoiding the tedious process of subsequent secondary positioning.

[0028] In order to solve the problem of continuously and stably supplying pigment to the first color marking cylinder 111, in this embodiment: the first color marking assembly 110 further includes a first rolling cylinder 112 and a first coloring cylinder 113.

[0029] The first rolling cylinder 112 is coaxially arranged with the first color marking cylinder 111 and located inside the first color marking cylinder 111. More specifically, the first color marking cylinder 111 is rotatably sleeved on the outside of the first rolling cylinder 112, and the two together form a roller structure. The first rolling cylinder 112 serves as the inner wheel, and its central axis is used to bear the load and transmit rotation.

[0030] The first coloring cylinder 113 is located above and tangent to the first color marking cylinder 111. The first coloring cylinder 113 is used to transfer pigment to the first color marking cylinder 111. In practical applications, the outer surface of the first coloring cylinder 113 can be adsorbed or impregnated with pigment; for example, it can be made of a sponge with good ink absorption or porous rubber, and form a rolling friction contact with the outer surface of the first color marking cylinder 111.

[0031] When the first color marking cylinder 111 moves with the concrete sample to be tested or rolls due to contact with the surface of the concrete sample, its outer surface will roll relative to the outer surface of the first coloring cylinder 113, thereby uniformly transferring the pigment on the first coloring cylinder 113 to the entire circumferential surface of the first color marking cylinder 111. This roller-brush type ink supply structure has the advantages of simplicity, reliability, and uniform coloring, ensuring that the first color marking cylinder 111 maintains clear marking ability during long-term, large-area continuous testing operations, avoiding the problem of frequent manual pigment refilling.

[0032] To address the continuous ink supply issue of the second color marking cylinder 121, in this embodiment: the second color marking assembly 120 further includes a second rolling cylinder 122 and a second coloring cylinder 123. The second rolling cylinder 122 is coaxially arranged with the second color marking cylinder 121 and located inside the second color marking cylinder 121; the second coloring cylinder 123 is located above the second color marking cylinder 121 and tangent to it, and is used to transfer ink to the second color marking cylinder 121.

[0033] When the second color marking cylinder 121 moves with the concrete sample to be tested or rolls due to contact with the surface of the concrete sample, its outer surface will roll relative to the outer surface of the second coloring cylinder 123, thereby uniformly transferring the pigment on the second coloring cylinder 123 to the entire circumferential surface of the second color marking cylinder 121. This roller-brush type ink supply structure has the advantages of simplicity, reliability, and uniform coloring, ensuring that the second color marking cylinder 121 maintains clear marking capability during long-term, large-area continuous testing operations, avoiding the problem of frequent manual pigment refilling.

[0034] It is worth noting that, in order to further distinguish different marking results, different colors of pigment can be injected into the first coloring cylinder 113 and the second coloring cylinder 123 respectively. For example, the first color is used to mark the reference plane and the area within the allowable error range, and the second color is used to mark the protruding area exceeding the threshold, thereby providing more intuitive and less confusing visual detection results.

[0035] Regarding the pigments in the first coloring cartridge 113 and the second coloring cartridge 123, both cartridges can absorb water-based or oil-based marking solutions. In a preferred embodiment, a fast-drying acrylic ink is used to form clear, abrasion-resistant marks on the concrete surface. In another embodiment, colored chalk dust or plaster powder is used to leave easily identifiable color marks on the concrete surface via a dry transfer method.

[0036] To address the issue of stable installation of the first coloring cylinder 113, the first rolling cylinder 112, and the first color marking cylinder 111, in this embodiment, the first color marking assembly 110 further includes a first support frame 114. The first support frame 114 has two mounting holes from top to bottom. The central shaft of the first coloring cylinder 113 passes through the upper mounting hole; the central shaft of the first rolling cylinder 112 passes through the lower mounting hole.

[0037] By employing an integrated or modular first support frame 114, the central axes of the first coloring cylinder 113 and the first rolling cylinder 112 are precisely positioned vertically, ensuring the parallelism of their axes and the geometric relationship of their tangent outer surfaces. This compact and rigid structure effectively prevents the separation or jamming of the two cylinders due to vibration or uneven force, ensuring the smoothness and stability of the pigment transfer process.

[0038] This embodiment also discloses that the first color marking assembly 110 further includes a first adjusting rod 115 and a first spring. Two first adjusting rods 115 are respectively mounted on both sides of the first support frame 114, and the support frame 114 can float up and down under the guidance of the first adjusting rods 115. The first spring is fitted onto the first adjusting rod 115 and located below the first support frame 114. The lower end of the first spring can abut against the support frame 220 or the bottom boss of the first adjusting rod 115, and the upper end abuts against the first support frame 114, providing elastic buffer support for the up and down floating of the first support frame 114. When the first color marking cylinder 111 is pushed by the raised area on the surface of the concrete sample block to be tested, the first color marking cylinder 111, the first rolling cylinder 112 and the first support frame 114 can float upward along the first adjusting rod 115 to avoid rigid collision; when the pushing action disappears, the first support frame 114 and related cylinders fall downward under their own weight until the central axis of the first rolling cylinder 112 abuts against the lower limit position defined by the first support rod 230, thereby restoring the first color marking cylinder 111 to the initial detection position.

[0039] In this embodiment, the second color marking assembly 120 further includes a second support frame 124. The second support frame 124 has two mounting holes from top to bottom; the central shaft of the second coloring cylinder 123 passes through the upper mounting hole; and the central shaft of the second rolling cylinder 122 passes through the lower mounting hole. Furthermore, the second color marking assembly 120 also includes a second adjusting rod 125 and a second spring. Two second adjusting rods 125 are respectively mounted on both sides of the second support frame 124, allowing it to float up and down under the guidance of the second adjusting rods 125. The second spring is fitted onto the second adjusting rod 125 and located below the second support frame 124. The lower end of the second spring can abut against the support frame 220 or the bottom boss of the second adjusting rod 125, and the upper end abuts against the second support frame 124, providing elastic buffer support for the up-and-down floating of the second support frame 124. When the second color marking cylinder 121 is pushed by the over-threshold protrusion area on the surface of the concrete sample block to be tested, the second color marking cylinder 121, the second rolling cylinder 122 and the second support frame 124 can float upward along the second adjusting rod 125 to avoid rigid collision; when the pushing effect disappears, the second support frame 124 and related cylinders fall downward under their own weight until the central axis of the second rolling cylinder 122 abuts against the lower limit position defined by the second support rod 240, thereby restoring the second color marking cylinder 121 to the initial detection position.

[0040] It should be noted that, since the initial position of the second color marking cylinder 121 is higher than that of the first color marking cylinder 111, it only contacts and rolls with the raised area on the surface of the concrete sample block to be tested when the raised height is not less than a preset threshold, thus leaving a corresponding mark. For areas where the raised height is less than the preset threshold, the second color marking cylinder 121 does not contact them, and this area can be considered to be within the allowable error range. For raised areas with larger heights, the second spring allows the second color marking cylinder 121 to float and rebound along the direction of the second adjusting rod 125 after contact, in order to avoid rigid collisions that could damage the device or scratch the surface of the concrete sample block to be tested.

[0041] To address the issue of accurately and stably setting the lowest point height of the outer periphery of the first color mark cylinder 111 and the second color mark cylinder 121 in the initial detection state, this embodiment further includes a first support rod 230 and a second support rod 240 fixedly mounted on the delivery mechanism 200.

[0042] The central axis of the first rolling cylinder 112 is supported and limited at both ends by two first support rods 230, thus defining the initial detection position of the first color marking cylinder 111. The central axis of the second rolling cylinder 122 is supported and limited at both ends by two second support rods 240, thus defining the initial detection position of the second color marking cylinder 121. The installation height of the first support rods 230 is less than the installation height of the second support rods 240, so that the lowest point of the outer circumference of the first color marking cylinder 111 is located at the reference plane in the initial detection state, and the lowest point of the outer circumference of the second color marking cylinder 121 is located at a second height higher than the reference plane in the initial detection state. When the first color marking cylinder 111 or the second color marking cylinder 121 is pushed by a protruding area on the surface of the concrete sample block to be tested, the central axis of the corresponding rolling cylinder can detach from the corresponding support rod and float upward; after the pushing action disappears, the corresponding support frame and rolling cylinder fall downward under their own weight, so that the central axis of the corresponding rolling cylinder abuts against the lower limit position defined by the corresponding support rod, thereby restoring the corresponding color marking cylinder to the initial detection position.

[0043] This embodiment uses two sets of fixed support rods at different heights as the final load-bearing foundation and height positioning reference for the entire marking assembly. The first support rod 230 and the second support rod 240 are directly or indirectly fixed to the support frame 220, and their heights are configured to create the required initial height difference between the first color marking cylinder 111 and the second color marking cylinder 121. This structure, in conjunction with the spring floating mechanism, provides a clear mechanical limit, making the initial state of the device repeatable and calibrable, greatly improving the accuracy and reliability of the detection.

[0044] To address the positioning and fixing issues of the concrete sample block during the testing process, and to improve the adaptability of the device to concrete sample blocks of different widths, this embodiment also discloses that: the moving platform 210 includes two limiting parts 211, a space is formed between the two limiting parts 211 for holding the concrete sample block, and the distance between the two limiting parts 211 is adjustable.

[0045] Specifically, the two limiting parts 211 can be symmetrically arranged stops. In a preferred embodiment, one limiting part 211 can be a fixed reference edge, while the other limiting part 211 is slidably mounted on the moving platform 210 via a lead screw, slide rail, or bolt connection. The operator can adjust the position of the movable limiting part 211 according to the actual width of the concrete sample to be tested, thereby firmly securing the concrete sample to the center of the moving platform 210.

[0046] In order to achieve smooth relative movement between the concrete sample block to be tested and the marking mechanism 100, this embodiment also discloses that the delivery mechanism 200 further includes a support frame 220, and the moving platform 210 is slidably connected to the support frame 220.

[0047] In one specific implementation, the support frame 220 can be equipped with slide rails or guide grooves, while the bottom of the moving platform 210 is equipped with matching sliders or rollers. By manually pushing or pulling or connecting a motor, lead screw, or other driving device, the moving platform 210 can move linearly back and forth along the support frame 220. This sliding connection method ensures smooth movement and precise guidance, guaranteeing that the concrete sample to be tested passes under the marking mechanism 100 at a constant height and posture. During operation, the operator only needs to fix the concrete sample to be tested on the moving platform 210 and push the platform through the marking area at a uniform speed to complete the defect detection and marking of the entire surface.

[0048] The following is a table illustrating the marking principle of the technical solution provided in this embodiment:

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for rapid detection of surface defects of a concrete sample to be tested, characterized in that, include: Delivery mechanism (200) and marking mechanism (100); The delivery mechanism (200) includes a mobile platform (210) for supporting the concrete sample block to be tested; The marking mechanism (100) is mounted on the delivery mechanism (200) and includes a first color marking component (110) and a second color marking component (120); The first color marking component (110) includes a first color marking cylinder (111). In the initial detection state, the lowest point of the outer peripheral surface of the first color marking cylinder (111) is located at a first height. The plane defined by the lowest point of the outer peripheral surface of the first color marking cylinder (111) is a reference plane. The first color marking cylinder (111) is used to contact the surface of the concrete sample block to be tested with a height not lower than the reference plane and apply a first color mark. The second color marking component (120) includes a second color marking cylinder (121). In the initial detection state, the lowest point of the outer peripheral surface of the second color marking cylinder (121) is located at a second height, which is higher than the first height. The second color marking cylinder (121) is used to contact the surface of the concrete sample block to be tested with a height not lower than the second height and apply a second color mark. Wherein, the first color mark and the second color mark are visually distinguishable, and the height difference between the second height and the first height constitutes a preset threshold for determining protrusion defects.

2. The rapid detection device for surface defects of concrete sample blocks according to claim 1, characterized in that, The first color marking component (110) further includes a first rolling cylinder (112) and a first coloring cylinder (113); The first rolling cylinder (112) is coaxially arranged with the first color marking cylinder (111) and located inside the first color marking cylinder (111); The first coloring cylinder (113) is located above the first color marking cylinder (111) and is tangent to the first color marking cylinder (111). The first coloring cylinder (113) is used to transfer pigment to the first color marking cylinder (111).

3. The rapid detection device for surface defects of concrete sample blocks according to claim 2, characterized in that, The second color marking component (120) also includes a second rolling cylinder (122) and a second coloring cylinder (123); The second rolling cylinder (122) is coaxially arranged with the second color marking cylinder (121) and located inside the second color marking cylinder (121); The second coloring cylinder (123) is located above the second color marking cylinder (121) and is tangent to the second color marking cylinder (121). The second coloring cylinder (123) is used to transfer pigment to the second color marking cylinder (121).

4. The rapid detection device for surface defects of concrete sample blocks according to claim 3, characterized in that, The first color marking component (110) also includes a first support frame (114); The first support frame (114) has two mounting holes from top to bottom; The central shaft of the first coloring cylinder (113) is inserted into the upper mounting hole; The central shaft of the first rolling cylinder (112) is inserted into the mounting hole at the bottom.

5. The rapid detection device for surface defects of concrete sample blocks according to claim 4, characterized in that, The first color marking assembly (110) also includes a first adjusting lever (115) and a first spring; The first support frame (114) is mounted on two first adjustment rods (115) on both sides. The first spring is fitted on the first adjustment rod (115) and located below the first support frame (114) to provide elastic buffer support for the up and down floating of the first support frame (114).

6. The rapid detection device for surface defects of concrete sample blocks according to claim 5, characterized in that, The second color marking component (120) also includes a second support frame (124); The second support frame (124) has two mounting holes from top to bottom; The central shaft of the second coloring cylinder (123) is inserted into the upper mounting hole; The central shaft of the second rolling cylinder (122) is inserted into the mounting hole at the bottom.

7. The rapid detection device for surface defects of concrete sample blocks according to claim 6, characterized in that, The second color marking assembly (120) also includes a second adjusting lever (125) and a second spring; The second support frame (124) is mounted on two second adjusting rods (125) on both sides. The second spring is fitted on the second adjusting rods (125) and located below the second support frame (124) to provide elastic buffer support for the up and down floating of the second support frame (124).

8. The rapid detection device for surface defects of concrete sample blocks according to claim 7, characterized in that, It also includes a first support rod (230) and a second support rod (240) fixedly installed on the delivery mechanism (200); The first support rod (230) is used to support and limit the lower limit position of the central axis of the first rolling cylinder (112) to limit the initial detection position of the first color mark cylinder (111); The second support rod (240) is used to support and define the lower limit position of the central axis of the second rolling cylinder (122) to define the initial detection position of the second color mark cylinder (121).

9. The rapid detection device for surface defects of concrete sample blocks according to claim 8, characterized in that, The mobile platform (210) includes two limiting parts (211), and a space for holding the concrete sample block for testing is formed between the two limiting parts (211), and the distance between the two limiting parts (211) is adjustable.

10. The rapid detection device for surface defects of concrete sample blocks according to claim 9, characterized in that, The delivery mechanism (200) also includes a support frame (220), to which the mobile platform (210) is slidably connected.

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