Chloride sampling and individual collection device for bridge concrete structures

Abstract

The present invention relates to a chloride sampling device for measuring the degree of chlorination of a structure near the shore or exposed to seawater, the device comprising: an attachment fixing part provided to allow direct attachment onto a main head of an electric drill; a close attachment part that attaches closely to an object from which chloride is to be sampled to allow a drill bit of the electric drill to be inserted therethrough; and a collection guider comprising curved flexible bands connecting the attachment fixing part and close attachment part. The collection guider is provided with a separate vinyl collection bag that can be conveniently separated therefrom, allowing highly efficient chloride sampling even by a single worker using an electric drill due to the lightweight collection guider, and bringing notable economic benefit of a collection guider that is structurally simple and comparatively productive. The vinyl collection bag allows efficient collection without scattering of chloride powder and the like produced by the drill bit, and, when separated from the collection guider, can be individually collected on the basis of sample collection locations, thereby allowing more efficient work and grouping.

Description

Chloride sampling and individual collection devices for concrete structures for bridges

[0001] The present invention relates to a chloride sampling device for measuring the salinity of structures exposed to seawater or near the coast, and more particularly, to a chloride sampling and individual sampling device comprising a mounting fixing part mounted on the main body head of an electric drill, a fluid contact part that is in close contact with a sampling target so that a drill bit passes through it, and a sampling guider formed by an elastic curve connecting the mounting fixing part and the fluid contact part, and a transparent vinyl collection bag is formed by combining the outside of the sampling guide, thereby enabling a worker to quickly and conveniently collect a chloride sample through the lightweight sampling guide, while at the same time using individual vinyl collection bags to efficiently separate and collect each chloride sample according to the sampling location.

[0002] In general, in the construction field, especially in bridge piers, cement concrete accounts for an absolute proportion, and research is constantly being conducted to increase the performance and ensure the stability of concrete structures in the case of piers that are exposed to the load of the bridge itself, including the piers and deck, as well as the load of vehicles traveling on the deck, wind, and earthquakes.

[0003] In particular, in the case of bridges exposed to coastal environments, the seriousness of the problem of corrosion of reinforcing steel in cement concrete due to chloride penetration is being raised. If such reinforcing steel corrosion occurs, cracks and detachment of the concrete structure constituting the pier may occur due to increased internal stress, and the reduction of the cross-section of the reinforcing steel due to such reinforcing steel corrosion may cause structural defects in the concrete structure, which is directly related to stability issues.

[0004] Accordingly, research on methods for measuring the amount of chloride, a major factor in steel corrosion in concrete structures, is actively being conducted, but the process of collecting and measuring chloride samples is cumbersome, and there are no special regulations on conversion methods according to the results of the measurement method.

[0005] In other words, to assess the service life of a reinforced concrete structure, the corrosion period of the steel reinforcement and the remaining service life of the structure must be predicted first. To this end, crushed samples are individually obtained from samples collected from the reinforced concrete structure at different depths, and the amount of chloride contained in the obtained crushed samples is measured and analyzed to assess the actual service life of the reinforced concrete structure.

[0006] Methods for testing chloride content include powder sampling using an electric drill and core sampling. Specifically, the electric drill bit method involves collecting powdered samples using an electric drill, similar to drilling for carbonation depth measurement. The core sampling method involves collecting cores directly from concrete structures.

[0007] In particular, the method using the above drill bit involves drilling a hole to a predetermined depth (h) in a concrete structure with a drilling device equipped with a drill bit, collecting concrete powder that is crushed in the process of drilling at each depth and discharged backward through a spiral groove of the drill bit by collecting it in a collection container, and testing the collected concrete powder for carbonation using a test reagent.

[0008] However, the above-mentioned conventional technology has a major problem in that the structure of the chloride sampling device is complex, which makes it difficult to improve the sampling efficiency, and the structural vulnerability or limitation causes dust to fly during sampling. In addition, the above-mentioned conventional technology also has a problem in that the collected sample is not easily stored in the collection container due to the structural defect.

[0009] Accordingly, recently, as in Patent No. 10-2515545, a chloride sampling device for concrete structures has been registered, which comprises: a cylindrical gripping part that can be held and gripped by a worker by hand; a hopper provided inside the gripping part and configured to collect and discard the collected sample while allowing the drill bit to pass through; and a sealing member provided at the tip of the gripping part, which has a hole formed to allow the drill bit to pass through and is in close contact with the wall of the concrete structure to prevent the sample from being dispersed to the outside during the sample collection process.

[0010] Next, as in Patent No. 10-2443192, a sampling device for testing chloride content in concrete has been registered, which allows for drilling to be performed accurately to the set depth by drilling the concrete by passing the limit chute with the drill bit until the drill bit stopper reaches the front of the limit chute temporarily fixed to the wall of the concrete structure after setting the drill bit stopper in advance by assembling and installing a drill bit stopper in a drilling depth setting groove corresponding to the drilling depth to be collected among a plurality of drilling depth setting grooves formed at the rear of the drill bit, and then drilling the concrete.

[0011] In addition, as in Patent Registration No. 10-1858738, an electric drill having a drill head and a drill bit coupled to the drill head and configured to collect samples from a concrete structure when in rotation; a support means having one end coupled to the drill head and the other end positioned at the end of the drill bit so that the drill bit constituting the electric drill is positioned in the center; and a sample discharge port having one end detachably mounted to the support means and the other end in close contact with the concrete structure, and discharging the sample to the outside when the drill bit collects a sample according to the operation of the electric drill; thereby, a sampling device for a concrete chloride test has been registered, which can accurately diagnose the durability of a concrete structure by collecting samples at each depth from the surface of the concrete structure, and can also have the effect of calculating the remaining durability life of the concrete structure.

[0012] However, in the case of the conventional chloride sampling device as described above, since the sampling device is not tightly fixed to the sampling target, there is a problem that it rotates together with the drill bit when the electric drill is operated, so the operation must be performed while pressing the sampling device with one hand, or there is the inconvenience and inconvenience of having to work in a two-person team, with one person pressing the sampling device and the other person operating the electric drill.

[0013] In addition, when working at heights such as bridge piers, there is a risk that the work equipment or the drill may fall if the worker holds the drill with one hand and operates the electric drill with the other hand. At the same time, if the worker holds the relatively heavy drill with one hand and performs repeated work, not only will the worker's fatigue increase rapidly, but it will also be difficult to hold it firmly, making it difficult to work efficiently. In addition, when two or more people are working on a narrow aerial work platform, it is difficult to secure sufficient space for stability.

[0014] In particular, in the case of the sampling device mounted on an electric drill among the examples mentioned above, it has the advantage of being relatively safe for one person to operate, but the sampling device is very complex and heavy, making it unsuitable for repetitive work. In addition, since a large number of components are organically connected, the weight of the sampling device is added to the weight of the electric drill, which is a heavy body, making it difficult for one person to operate the device alone, or it is possible to collect samples from a limited location in a short period of time, making it nearly impossible to repeatedly collect chlorides from a large and wide area.

[0015] The present invention is an improvement over the aforementioned problems, and comprises a mounting fixing part that is made to be mountable on the main body head of an electric drill, a movable contact part that is in close contact with a chloride sample collection target so that a drill bit of the electric drill can be inserted through it, and a collection guide formed by an elastic curve connecting the mounting fixing part and the movable contact part, and a separately provided vinyl collection bag that can be easily separated from the collection guide is combined and formed to the collection guide, thereby forming

[0016] The present invention provides a device for collecting chloride samples and collecting individual samples from concrete bridge structures, which has the characteristics of being able to collect chloride very efficiently using an electric drill even by a single worker through a lightweight sampling guider, and having a simple configuration and relatively high productivity, and having an excellent economic benefit effect, and being able to effectively collect chloride powder, etc., from a drill bit without scattering by a vinyl collection bag, and being able to collect vinyl collection bags separated from the sampling guider individually according to the sampling location, thereby enabling more efficient work and classification.

[0017] In order to achieve the above-mentioned object, the present invention comprises a collection guide comprising a mounting fixing part coupled to a main body head of an electric drill equipped with a drill bit; a fluid contacting part that is in close contact with the surface of an object for collecting a chloride sample and has the end of the drill bit inserted into the center; and an outwardly curved radial elastic curved band integrally connecting the mounting fixing part and the fluid contacting part; and a transparent, separately provided vinyl collection bag is formed by combining it on the outside of the collection guide.

[0018] The above-mentioned mounting fixing part is formed with a transverse expansion cut-out, and mutually opposing fixing protrusions are formed on the outer surface of the mounting fixing part on the expansion cut-out, so that a fixing bolt penetrating these fixing protrusions is screw-fastened to a fixing nut recessed into one of the fixing protrusions, and a separately provided suction port is further formed on the outer surface of the above-mentioned fluid-fitting part.

[0019] The present invention provides a sampling guide that is injection-molded using synthetic resin, and is thus very lightweight, allowing for easy installation on an electric drill, and allowing a worker to collect chloride samples using one hand, thereby providing excellent work efficiency and convenience. In addition, since the interior of the sampling guide is visible through a transparent vinyl collection bag, the work process and the status of sampling can be intuitively confirmed, enabling faster and more effective work. In addition, the vinyl collection bag, which can be quickly attached to the sampling guide as well as easily detached, allows chloride samples to be collected separately by sampling location or by target, thereby preventing problems such as mixing or switching of collected chloride samples. In addition, the vinyl collection bag separated from the sampling guide can be quickly sealed by a tying string at both ends and collected individually, thereby further improving the convenience and speed of work.

[0020] Figure 1 is a perspective view of the entire sample collection and capturing device of the present invention.

[0021] Figure 2 is an exploded perspective view of the sample collection and capturing device of the present invention.

[0022] Figure 3 is a cross-sectional view of the combined sample collection and capturing device of the present invention.

[0023] Figure 4 is a cross-sectional view of the sample collection and capturing device of the present invention.

[0024] Figure 5 is an explanatory drawing showing the process of mounting a light drill to the sample collection and collection device of the present invention.

[0025] Figure 6 is an explanatory drawing showing the state of mounting of the electric drill to the sample collection and collection device of the present invention.

[0026] Figure 7 is an explanatory diagram showing a chloride sample collection process using the sample collection and collection device of the present invention.

[0027] Figure 8 is a diagram illustrating the collection process of individually separated chloride samples from the sample collection and collection device of the present invention.

[0028] Additional objects, features and advantages of the present invention can be more clearly understood from the following detailed description and accompanying drawings.

[0029] Before going into a detailed description of the present invention, it should be understood that the present invention can be modified in various ways and can have various embodiments, and that the examples described below and illustrated in the drawings are not intended to limit the present invention to specific embodiments, but include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

[0030] Additionally, when a component is referred to as being "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may be other components present in between. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components present in between.

[0031] Hereinafter, the terminology used in this specification is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, it should be understood that the terms "comprise" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0032] Additionally, terms such as “... part,” “... unit,” and “... module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software.

[0033] In addition, when describing with reference to the attached drawings, identical components will be assigned the same reference numerals regardless of the drawing numbers, and redundant descriptions thereof will be omitted. When describing the present invention, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of the present invention, such detailed description will be omitted.

[0034]

[0035] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0036] FIG. 1 is a full perspective view of a sample collection and collection device of the present invention, FIG. 2 is an exploded perspective view of a sample collection and collection device of the present invention, FIG. 3 is a combined cross-sectional view of a sample collection and collection device of the present invention, and FIG. 4 is an exploded cross-sectional view of a sample collection and collection device of the present invention.

[0037] The chloride sample collection and collecting device according to the present invention, such as a city, comprises a collection guide (200) comprising a mounting fixing part (210) coupled to a main body head (101) of an electric drill (100) equipped with a drill bit (110); a fluid contact part (220) that is in close contact with the surface of an object for collecting a chloride sample and has the end of the drill bit (110) inserted into the center; and an outwardly curved radial elastic curved member (230)(230') that integrally connects the mounting fixing part (210) and the fluid contact part (220). A transparent, separately provided vinyl collection bag (300) is formed by combining the outside of the collection guide (200).

[0038] Here, the mounting fixing part (210) of the above-described mining guide (200) is for firmly and simply fixing and mounting the mining guide (200) itself to the electric drill (100), and is made into a circular ring using a hard synthetic resin and is coupled to one end of the electric drill (100) where the chuck for mounting the drill bit (110) is located, that is, the main body head (101) of the electric drill (100). Since the chuck and the drill bit (110) are rotating bodies, while the main body head (101) is a non-rotating body, the above-described mining guide (200) fastened to the main body head (101) of the electric drill (100) using the mounting fixing part (210) is ultimately a non-rotating body, just like the main body head (101).

[0039] In particular, the mounting fixing part (210) is formed with a transverse expansion cut (211) and the mounting fixing part (210) on the expansion cut (211) has mutually opposing fixing protrusions (212) (212') formed on the outer surface of the mounting fixing part (210) so that the fixing bolt (213) penetrating the fixing protrusions (212) (212') is screw-fastened to the fixing nut (214) recessedly inserted into the fixing protrusion (212') on one side, so that the mounting fixing part (210) having an internally expanded shape due to the expansion cut (211) is fitted and connected to the main body head (101) of the electric drill (100), and then the fixing bolt (213) connected to the fixing protrusion (212) (212') of the mounting fixing part (210) is rotated to be screw-fastened with the fixing nut (214) on the other side, thereby connecting the mutually spaced expansion cuts (211) As the gap narrows, the above-mentioned mounting fixing member (210) can be fixed with strong adhesion to the main body head (101) of the electric drill (100).

[0040] In addition, the above-described fluid contact portion (220) is laterally spaced apart from the above-described mounting fixing portion (210), and the mounting fixing portion (210) and the fluid contact portion (220) are integrally connected by a curved elastic curve member (230)(230') having a center bent outward, and the above-described elastic curve members (230)(230') are radially arranged in the form of two to four units, and at the same time, the above-described mounting fixing portion (210), the fluid contact portion (220), and the elastic curve members (230)(230') can all be integrally formed.

[0041] In particular, a through hole (221) is formed in the center of the fluid contact portion (220) as described above for inserting a drill bit (110) mounted on an electric drill (100), and a radial inclined discharge groove (222) (222') formed along the periphery of the through hole (221) is formed on the inner surface of the fluid contact portion (220), so that the chloride sample scattered by the rotation of the drill bit (110) is guided to the inside of the fluid contact portion (220) through the through hole (221) and simultaneously discharged along the inclined discharge groove (222) (222'), and a fastening groove (223) is formed on the outer surface of the fluid contact portion (220) for pressurizing and fastening a fitting projection (241) protruding on one side of a separately provided suction port (240), and in the center of the suction port (240) It is configured so that an inlet hole (242) corresponding to the through hole (221) of the fluid contact part (220) is formed, and not only is dust generated during the chloride sampling process prevented from scattering in all directions due to the adsorption port (240) coupled to the outer surface of the fluid contact part (220), but also the surface of the sample collection target is prevented from being damaged, and noise generated during the chloride sampling process is also reduced due to the adsorption port (240).

[0042] Accordingly, the above-described sampling guide (200) is easily mounted on an electric drill (100), and is maintained in the mounted state and repeatedly used for a large number of sampling points on a sampling target such as a bridge pier, and the above-described vinyl collection bag (300) is separated from the sampling guide (200) for each chloride sample sampling point and is used for the purpose of individually storing samples.

[0043] In particular, the vinyl collection bag (300) as described above is made by forming a zigzag-shaped binding string (310)(310') made of elastic bands at both ends, and by forming a catch groove (215)(224) on the outer surface of the mounting fixing portion (210) and the outer surface of the fluid contact portion (220) of the aforementioned collection guide (200) for binding and fixing the binding string (310)(310') of the vinyl collection bag (300), when the vinyl collection bag (300) is covered on the outside of the collection guide (200) mounted on the electric drill (100) and the binding string (310)(310') at both ends is pulled, the vinyl collection bag (300) will be combined with the entire outside of the collection guide (200).

[0044] Next, a stopper ring (400) provided separately is formed by combining the drill bit (110) of the electric drill (100), and a through-hole (401) for inserting the drill bit (110) is formed in the stopper ring (400), and a fastening bolt (410) is formed on the outside of the stopper ring (400) by screwing it so that it penetrates the stopper ring (400) and is inserted and fixed in the spiral groove (111) of the drill bit (110), so that when the drill bit (110) advances for sampling, one end of the stopper ring (400) interferes with the inner surface of the fluid sealing portion (220), thereby enabling easy adjustment of the drilling depth of the object for sampling chloride.

[0045] Here, a more specific description will be given of the chloride sample collection process of bridge piers, etc., using the sampling guide (200) and vinyl collection bag (300) of the present invention having the above-described configuration. First, as shown in FIG. 5, the mounting fixing part (210) of the sampling guide (200) is fitted into the main body head (101) of the electric drill (100), and the mounting fixing part (210) is firmly fixed to the main body head (101) by rotating the fixing bolt (213), so that the end of the drill bit (110) of the electric drill (100) is positioned within the through hole (221) of the movable sealing part (220).

[0046] In this state, when a vinyl collection bag (300) is covered on the outside of the collection guide (200) and the tying strings (310) (310') provided at both ends of the vinyl collection bag (300) are positioned in the catching grooves (215) of the mounting fixing part (210) and the catching grooves (224) of the moving sealing part (220), respectively, and the tying strings (310) (310') are pulled so that the vinyl collection bag (300) is fixed to the outside of the collection guide (200), a state as shown in FIG. 6 is created.

[0047] At this time, the above vinyl collection bag (300) may be pre-attached to the collection guide (200) and the collection guide (200) may be mounted on the electric drill (100).

[0048] In this state, when the fluid contact part (220) is brought into contact with the target surface of the object from which a chloride sample is to be collected, the suction port (240) on the outside of the fluid contact part (220) is compressed, and when the electric drill (100) is operated so that the drill bit (110) rotates at high speed and the electric drill (100) is pressed toward the object to be collected, the drill bit (110) moves forward and digs into the surface and inside of the object to be collected, and debris and pieces due to crushing are discharged, and these collected samples are discharged to the rear of the fluid contact part (220) along the inlet hole (242) of the suction port (240) and the through hole (221) and the inclined discharge groove (222)(222') of the fluid contact part (220), so that they can be naturally collected in the vinyl collection bag (300).

[0049] In particular, in the process of pressing and advancing the electric drill (100) as described above, the radial elastic curve (230)(230') is expanded and bent outward by the pressing force and has a predetermined compressive force, and when the collection of the chloride sample is completed and the electric drill (100) is retreated, the compressed elastic curve (230)(230') returns to its original shape, and the drill bit (110) is separated from the sample collection target more quickly and easily, so that the convenience of work can be further improved, and in the process of the elastic curve (230)(230') being expanded outward by the pressing, it will also play a role of expanding the wrinkled vinyl collection bag (300).

[0050] Accordingly, when collecting chloride samples for individual collection points is completed, the tying strings (310)(310') at both ends of the vinyl collection bag (300) can be released from the collection guide (200) to separate only the vinyl collection bag (300) containing the chloride sample from the collection guide (200). The vinyl collection bag (300) separated from the collection guide (200) can be prevented from leaking by tying both ends of the strings by tightening the tying strings (310)(310') at both ends.

[0051] In addition, since a new vinyl collection bag (300) can be quickly and simply placed on the collection guide (200) from which the vinyl collection bag (300) has been removed to obtain a sample from a new collection point, chloride samples can be quickly and conveniently collected and collected individually for a large number of collection points by repeatedly combining and separating only the vinyl collection bag (300). Accordingly, as shown in FIG. 8, not only can a plurality of vinyl collection bags (300) containing only a single chloride sample be collected from a single collection point, but each vinyl collection bag (300) can be distinguished by attaching a label or name tag to each vinyl collection bag (300), so that problems such as chloride samples being mixed with each other due to a large number of collection points or samples corresponding to collection points being mistakenly switched can be solved at once.

[0052] Accordingly, the chloride sample collection and collecting device of the present invention is relatively lightweight and thus has excellent convenience in use, and can be easily operated by a single worker, thereby creating a safe working environment during high-altitude work such as on bridges and piers. In addition, by repeatedly replacing the vinyl collection bag and collecting the collected samples in a form in which they are each collected separately for a large number of collection points, there will be an advantage in that the chloride amount and chloride content of the measurement target can be measured more accurately.

[0053]

[0054] The embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them.

Claims

1. A collection guide (200) comprising a mounting fixing part (210) coupled to a main body head (101) of an electric drill (100) equipped with a drill bit (110); a fluid contact part (220) that is in close contact with the surface of an object for collecting a chloride sample and has the end of the drill bit (110) inserted into the center; and an outwardly curved radial elastic curved member (230) (230') that integrally connects the mounting fixing part (210) and the fluid contact part (220); and a transparent, separately provided vinyl collection bag (300) is formed by combining the outside of the collection guide (200). A chloride sampling and individual collection device for a bridge concrete structure, characterized in that a transverse expansion cut portion (211) is formed in the above-mentioned mounting fixing portion (210), and mutually opposing fixing protrusions (212)(212') are formed on the outer surface of the mounting fixing portion (210) on the expansion cut portion (211), and a fixing bolt (213) penetrating these fixing protrusions (212)(212') is screw-fastened to a fixing nut (214) sunken into one of the fixing protrusions (212'), and a separately provided adsorption port (240) is further formed and combined on the outer surface of the above-mentioned fluid-adhesive portion (220).

2. A collection guide (200) is provided, which is composed of a mounting fixing part (210) coupled to the main body head (101) of an electric drill (100) equipped with a drill bit (110); a fluid contact part (220) that is in close contact with the surface of an object for collecting a chloride sample and has the end of the drill bit (110) inserted into the center; and an outwardly curved radial elastic curved member (230) (230') that integrally connects the mounting fixing part (210) and the fluid contact part (220). A transparent, separately provided vinyl collection bag (300) is formed by combining the outside of the collection guide (200). A chloride sampling and individual collection device for a bridge concrete structure, characterized in that a transverse expansion cut portion (211) is formed in the above-mentioned mounting fixing portion (210), and mutually opposing fixing protrusions (212)(212') are formed on the outer surface of the mounting fixing portion (210) on the expansion cut portion (211), and a fixing bolt (213) penetrating these fixing protrusions (212)(212') is screw-fastened to a fixing nut (214) sunken into one of the fixing protrusions (212'), and a separately provided adsorption port (240) is further formed and combined on the outer surface of the above-mentioned fluid-adhesive portion (220).

3. In paragraph 1, A chloride sample collection and individual collection device for a concrete bridge structure, characterized in that a vinyl collection bag (300) is formed by forming a zigzag-shaped binding string (310)(310') made of elastic bands at both open ends, and a catch groove (215)(224) is formed on the outer surface of the mounting fixing part (210) of the collection guide (200) and the outer surface of the fluid contact part (220) for binding and fixing the binding string (310)(310') of the vinyl collection bag (300), respectively.

4. In paragraph 1, A chloride sampling and individual collection device for a concrete structure for a bridge, characterized in that a drill bit (110) of an electric drill (100) is formed by combining a separately provided stopper ring (400), and a penetrating insertion hole (401) for inserting a drill bit (110) is formed in the stopper ring (400), and a fastening bolt (410) is formed on the outside of the stopper ring (400) by screwing it so that it is inserted and fixed in a spiral groove (111) of the drill bit (110) by penetrating the stopper ring (400), so that when the drill bit (110) advances for sampling, one end of the stopper ring (400) interferes with the inner surface of the fluid sealing portion (220), thereby enabling adjustment of the drilling depth of an object for collecting a chloride sample.

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