Concrete carbonization depth tester

Abstract

The utility model relates to the technical field of concrete engineering detection instruments, in particular to a concrete carbonization depth tester which comprises a gun type shell, a cavity is arranged in the gun type shell, and a plurality of openings with different sizes are arranged at one end of the cavity. A cavity is formed in the gun type shell, a drilling device, a phenolphthalein liquid storage device and a depth detection device are arranged in the cavity and correspond to the openings, a leveling device is arranged at the front end of the gun type shell and comprises a wear-resisting cushion block, multiple adjusting support legs and a leveling plate, one ends of the multiple adjusting support legs are fixedly connected with the leveling plate, and the other ends of the multiple adjusting support legs are fixedly connected with the leveling plate. The other end is sleeved with a wear-resistant cushion block; a lifting air cylinder is arranged on the adjusting support leg, and the leveling plate is fixedly connected to the gun type shell. The concrete carbonization depth tester solves the problem of measurement deviation caused by uneven ground of an existing tester, the levelness of the tester can be quickly adjusted by arranging the leveling device, and the measurement accuracy is further improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete engineering testing instruments, and in particular to a concrete carbonation depth measuring instrument. Background Technology

[0002] The "Technical Specification for Evaluation of Compressive Strength of Concrete by Rebound Method" (JGJ23-2011) of the Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China stipulates that: "When measuring the carbonation depth, a suitable tool (electric drill) can be used to form a hole with a diameter of about 15 mm on the surface of the test area (its depth is slightly greater than the carbonation depth of the concrete). Then, remove the powder and debris from the hole (do not wash with liquid), and immediately sprinkle a 1% phenolphthalein alcohol solution on the edge of the inner wall of the hole. When the boundary between carbonized and uncarbonated concrete is clear, use a depth measuring tool to measure the vertical distance from the interface between carbonized and uncarbonated concrete to the concrete surface multiple times. The readings should be accurate to 0.5 mm, and the average value should be taken as the carbonation depth value of the test area."

[0003] For example, Chinese patent CN220137010U discloses a highway concrete carbonation depth measuring instrument, which mainly includes a housing. An electric cylinder is fixed at the right end of the housing, and a motor is connected to the power end of the electric cylinder. The motor is slidably connected to the housing, and a drill rod is connected to the power end of the motor. A liquid storage component is provided on the top of the housing, and a dustproof component is provided on the left end of the housing. A handle is fixed on the right side of the lower end of the housing, and a detection component is provided on the left side of the handle. This technical solution can conveniently and automatically drill holes in concrete through the drill rod by working the electric cylinder and the motor. At the same time, the liquid storage component stores phenolphthalein reagent, which is convenient for uniform spraying. The dustproof component on the housing effectively avoids the problem of dust flying during drilling.

[0004] However, during the actual measurement of depth, the unevenness of the road surface caused errors in the data of carbonization depth measured by the measuring instrument when it is close to the road surface. In addition, when the measurement is done by hand, it is also affected by the operator's hand posture, which leads to deviations in the measured carbonization depth value. Utility Model Content

[0005] In order to address the technical deficiencies mentioned in the background art, the purpose of this utility model is to provide a concrete carbonation depth measuring instrument, which aims to solve the problem of measurement deviation caused by uneven surface during measurement in existing measuring instruments. By setting an automatic leveling device, the measuring instrument can measure quickly and further improve the accuracy of the measurement data.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A concrete carbonation depth measuring instrument includes a gun-type housing with an internal cavity. One end of the cavity has multiple openings of different sizes, and a drilling device, a phenolphthalein reservoir, and a depth detection device are respectively installed at the corresponding opening positions within the cavity. The front end of the gun-type housing has a leveling device for automatic leveling. The leveling device includes wear-resistant pads, adjusting support legs, and a leveling plate. The adjusting support legs are freely telescopic, and multiple adjusting support legs are provided. One end of each adjusting support leg is fixedly connected to the leveling plate, and the other end is fitted with a wear-resistant pad. A lifting cylinder is installed on each adjusting support leg to drive its telescopic height. The leveling plate has perforations at the positions corresponding to the drilling device, the phenolphthalein reservoir, and the depth detection device, and the leveling plate is fixedly connected to the gun-type housing.

[0008] Preferably, the drilling device includes a drill bit, a rotating component, and a drive motor. The drill bit is detachably connected to the rotating component. One end of the rotating component has a slot for engaging the rotating head, and the other end of the rotating component is connected to the output end of the drive motor via a coupling.

[0009] Preferably, the phenolphthalein storage device includes a storage bladder, an infusion pump, and an infusion nozzle. The storage bladder is located inside the gun-type housing, and an infusion tube connects the storage bladder and the infusion nozzle. The infusion tube is a flexible telescopic tube, and a portion of the infusion tube extends out of the perforation of the plate. The infusion pump is installed at the connection between the infusion tube and the storage bladder. The infusion nozzle is located at the end of the infusion tube away from the infusion pump, and the infusion nozzle has multiple spray holes.

[0010] Preferably, the gun-type outer shell is provided with a liquid inlet for adding phenolphthalein reagent, and the liquid inlet is connected to the reservoir.

[0011] Preferably, the depth detection device includes a detection probe for testing carbonization depth, a fixing member fixed to one end of the detection probe, and a transmission assembly for moving the detection probe to extend or retract. The detection probe is engraved with scale lines, one end of the fixing member is fixedly connected to the detection probe, and the other end is movably connected to the transmission assembly.

[0012] Preferably, a control device is provided at the cavity end of the gun-type housing. The control device includes a switch button, a controller, and a battery. Multiple switches are provided, and the multiple switches control the opening and closing of the drilling device, the phenolphthalein reservoir, and the depth detection device, respectively. The controller is electrically connected to the drilling device, the phenolphthalein reservoir, and the depth detection device, respectively. The battery is used to provide power to the controller and the drive motor.

[0013] Preferably, a dust cover is provided at the opening of the gun-type outer shell. The dust cover is fitted onto the leveling plate, and the side of the dust cover facing the concrete increases outward in a trumpet shape.

[0014] Preferably, the gun-type housing is also provided with a miniature display, which is connected to the control device and is used to display the data measured by the detection probe.

[0015] In summary, the beneficial effects of this utility model are as follows:

[0016] This invention incorporates a leveling device on the carbonation depth measuring instrument, enabling it to automatically adjust its height according to the flatness of the concrete surface. This ensures that the depth measuring device remains perpendicular to the ground during carbonation depth measurement, thus solving the problem of measurement data deviation caused by uneven surfaces or operator hand posture during handheld measurements, which leads to errors in existing measuring instruments. When the leveling device is in contact with the concrete surface, a lifting cylinder automatically adjusts the height of the support legs, keeping the leveling plate always horizontal. This allows the depth measuring device to quickly locate and measure, further improving measurement accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the concrete carbonation depth measuring instrument of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the concrete carbonation depth measuring instrument of this utility model;

[0019] Figure 3 This is a schematic diagram of the leveling device in this utility model.

[0020] Explanation of the reference numerals in the figure:

[0021] 1. Gun-type outer shell; 11. Cavity; 2. Drilling device; 21. Drill bit; 22. Rotating component; 23. Drive motor; 3. Phenolphthalein storage device; 31. Storage bladder; 32. Infusion pump; 33. Infusion nozzle; 34. Infusion tubing; 4. Depth detection device; 41. Detection probe; 42. Fixing component; 43. Transmission assembly; 5. Leveling device; 51. Wear-resistant pad; 52. Adjustable support leg; 53. Leveling plate; 531. Perforation; 54. Lifting cylinder; 6. Liquid filling port; 7. Control device; 71. Switch button; 72. Controller; 73. Battery; 8. Dust cover; 9. Miniature display. Detailed Implementation

[0022] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0023] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, the above terms should not be construed as limitations on this utility model.

[0024] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0025] The following is in conjunction with the appendix Figure 1-3 The embodiments of the concrete carbonation depth measuring instrument of this utility model will be described in further detail.

[0026] A concrete carbonation depth measuring instrument, such as Figure 1 and Figure 3 As shown, the device includes a gun-shaped outer shell 1, which has an internal cavity 11. One end of the cavity 11 has multiple openings of different sizes, and a drilling device 2, a phenolphthalein reservoir 3, and a depth detection device 4 are respectively installed at the corresponding opening positions within the cavity 11. The front end of the gun-shaped outer shell 1 is provided with a leveling device 5 for automatic leveling. The leveling device 5 includes a wear-resistant pad 51, an adjusting support leg 52, and a leveling plate 53. The adjusting support leg 52 is a freely telescopic structure, and multiple adjusting support legs 52 are provided. One end of the multiple adjusting support legs 52 is fixedly connected to the leveling plate 53, and the other end is fitted with the wear-resistant pad 51. The adjusting support leg 52 is provided with a lifting cylinder 54 for driving its telescopic height. The leveling plate 53 has perforations 531 at the positions corresponding to the drilling device 2, the phenolphthalein reservoir 3, and the depth detection device 4, and the leveling plate 53 is fixedly connected to the gun-shaped outer shell 1.

[0027] Specifically, after drilling and adding phenolphthalein reagent to the concrete surface, the carbonation depth needs to be measured. To ensure the accuracy of the measurement results and to avoid errors caused by unevenness of the concrete surface, a leveling device 5 is installed at one end of the gun-shaped nozzle. This device automatically levels the surface, ensuring the depth measuring instrument remains perpendicular to the concrete surface, thus preventing errors. During leveling, multiple adjustable support legs 52 at the bottom rest against the concrete surface, and wear-resistant blocks are designed to prevent wear. To achieve the leveling effect, during adjustment, since each adjusting support leg 52 is located on a different level of concrete surface, a sensor is installed on each adjusting support leg 52 so that it can sense the height difference of the ground. The lifting cylinder 54 controls the extension and retraction of each adjusting support leg 52, so that the leveling plate 53 at the top is always kept on a horizontal plane. This ensures that the carbonation depth measuring instrument is perpendicular to the concrete ground, thus ensuring that the measurement results are accurate and preventing the problem of measurement deviation caused by the operator's hand posture when using handheld measurement.

[0028] In this embodiment, as Figure 2 As shown, the drilling device 2 includes a drill bit 21, a rotating part 22 and a drive motor 23. The drill bit 21 is detachably connected to the rotating part 22. One end of the rotating part 22 is provided with a slot for engaging the rotating head. The other end of the rotating part 22 is connected to the output end of the drive motor 23 via a coupling.

[0029] Specifically, when drilling into the concrete surface, the drill bit 21 is detachably connected, making it easy to change the specifications and types of the drill bit 21 to adapt to various scenarios. It can also be easily disassembled when not in use to prevent the exposed drill bit 21 from posing a certain danger, thereby ensuring the safety of the carbonation depth measuring instrument when it is carried. At the same time, when driving the drill bit 21 to rotate, the drive motor 23 drives the rotating component 22 to rotate, and the rotating component 22 drives the drill bit 21 to rotate. The speed of the drive motor 23 can be adjusted through the coupling.

[0030] In this embodiment, as Figure 1 As shown, the phenolphthalein storage device 3 includes a storage bladder 31, an infusion pump 32, and an infusion nozzle 33. The storage bladder 31 is located inside the gun-type housing 1, and an infusion tube 34 is connected between the storage bladder 31 and the infusion nozzle 33. The infusion tube 34 is a flexible telescopic tube, and part of the infusion tube 34 extends out of the perforation 531 of the plate 53. The infusion pump 32 is installed at the connection between the infusion tube 34 and the storage bladder 31. The infusion nozzle 33 is located at the end of the infusion tube 34 away from the infusion pump 32, and multiple spray holes are opened on the infusion nozzle 33.

[0031] Specifically, after drilling, phenolphthalein reagent needs to be added to the drilled hole to reveal the carbonation within the concrete. However, this is typically done manually, which is inefficient and prone to uneven application, leading to incomplete carbonation and errors in the final measurement results. To address this, this invention utilizes a phenolphthalein storage device 3 for automatic spraying. A pump 32 controls the output of phenolphthalein reagent from the storage bladder 31, which is then delivered to the nozzle 33 via a delivery pipe 34. The reagent is then evenly sprayed through the nozzle, ensuring uniform application within the drilled hole and reaction with the concrete. This facilitates observation of color changes. Phenolphthalein changes color upon contact with strong alkalis in the concrete, while the carbonized areas remain colorless. The operation is simple; the nozzle is pulled outwards. Since the delivery pipe 34 is flexible and telescopic, it can be moved to the desired position to complete the spraying without wasting reagent, thus improving the efficiency of phenolphthalein application.

[0032] It is worth mentioning that the gun-type outer casing 1 is provided with a filling port 6 for adding phenolphthalein reagent, which is connected to the reservoir 31. A cover plate is provided on the filling port 6 to seal it, so that the phenolphthalein reagent in the reservoir 31 can be quickly replenished after it is used up; thus solving the problem of the existing reservoir 31 being difficult to replace.

[0033] In this embodiment, the depth detection device 4 includes a detection probe 41 for testing carbonization depth, a fixing member 42 fixed to one end of the detection probe 41, and a transmission assembly 43 for moving the detection probe 41 to extend and retract. The detection probe 41 is engraved with scale lines. One end of the fixing member 42 is fixedly connected to the detection probe 41, and the other end is movably connected to the drive assembly. The transmission assembly 43 adopts a lead screw drive.

[0034] Specifically, after the phenolphthalein reagent is added, the carbonation depth of the concrete can be detected by the depth detection device 4. The detection probe 41 located in the inner cavity is driven by the transmission component 43 to extend into the drilled hole. The carbonation depth of the concrete can be quickly read through the scale lines on the detection probe 41. After the detection is completed, it automatically retracts into the inner cavity of the gun-type outer shell 1. In order to control the horizontal movement of the detection probe 41, a fixing member 42 is provided at one end of it and is connected to the transmission component 43. The transmission component 43 adopts a screw drive and is connected to the drive motor 23, so that the drive motor 23 can synchronously control the extension and retraction of the detection probe 41.

[0035] In this embodiment, a control device 7 is provided at the end of the cavity 11 of the gun-type housing 1. The control device 7 includes a switch button 71, a controller 72, and a battery 73. Multiple switch buttons 71 are provided, and the multiple switch buttons 71 control the opening and closing of the drilling device 2, the phenolphthalein reservoir 3, and the depth detection device 4, respectively. The controller 72 is electrically connected to the drilling device 2, the phenolphthalein reservoir 3, and the depth detection device 4, respectively. The battery 73 is used to provide power to the controller 72 and the drive motor 23.

[0036] Specifically, in order to control the working parameters of the automated control measuring instrument, a control device 7 is set inside the gun-type housing 1 to control the operation of the drilling device 2, the phenolphthalein storage device 3 and the depth detection device 4, so that the entire depth detection process is standardized and accurate. Furthermore, the controller 72 uses a smart chip, which can automatically adjust the rotation speed of the drilling device 2 according to the hardness of the concrete, and can also process the data detected by the depth detection device 4, thereby saving labor intensity for operation.

[0037] It is worth noting that a dust cover 8 is installed at the opening of the gun-type outer casing 1. The dust cover 8 is fitted onto the leveling plate 53, and the dust cover 8 widens outwards in a trumpet shape on the side facing the concrete. By covering the concrete drilling location with the dust cover 8, the dust generated during drilling is contained, preventing the dust from directly flying into the air. This effectively reduces the amount of dust entering the nasal cavity of workers, thus avoiding any impact on their health and ensuring the quality of the working environment.

[0038] To further facilitate reading, a miniature display 9 is also provided on the gun-type housing 1. The display is connected to the control device 7 and is used to display the data measured by the detection probe 41. Using electronic reading can avoid the problem of inaccurate readings caused by line-of-sight deviations when reading manually. At the same time, the miniature display 9 can also display the working status of the device and the remaining battery power, thus facilitating the operator to observe the instrument's usage status in real time.

[0039] The working principle of this utility model:

[0040] When determining the depth of concrete carbonation, the drilling device 2 of this invention is first activated by switch button 71. The drive motor 23 drives the drill rod to create a hole in the concrete surface. To prevent dust from flying during drilling, a dust cover 8 is installed at the front of the measuring instrument. After cleaning the powder and debris inside the hole, a 1% phenolphthalein alcohol solution is immediately sprayed onto the edge of the hole's inner wall through the phenolphthalein storage device 3 until the boundary between carbonized and uncarbonized concrete is clear. Then, the depth detection device 4 is activated to measure the vertical distance from the interface between carbonized and uncarbonized concrete to the concrete surface. During the measurement process, the leveling device 5 keeps the tip of the detection probe 41 perpendicular to the horizontal plane of the concrete, thus avoiding errors in the measurement results and affecting the final carbonation depth determination. After multiple measurements, the average value is calculated as the carbonation depth value for the test area.

[0041] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete carbonation depth measuring instrument, comprising a gun-type housing, wherein the gun-type housing has a cavity inside, one end of the cavity is provided with a plurality of openings of different sizes, and a drilling device, a phenolphthalein storage device and a depth detection device are respectively provided at the positions corresponding to the openings inside the cavity, characterized in that, The front end of the gun-type housing is equipped with a leveling device for automatic leveling. The leveling device includes a wear-resistant pad, an adjusting support leg, and a leveling plate. The adjusting support leg is a freely telescopic structure, and multiple adjusting support legs are provided. One end of each adjusting support leg is fixedly connected to the leveling plate, and the other end is fitted with a wear-resistant pad. The adjusting support leg is equipped with a lifting cylinder for driving its telescopic height. The leveling plate has perforations at the positions corresponding to the drilling device, phenolphthalein storage device, and depth detection device, and the leveling plate is fixedly connected to the gun-type housing.

2. The concrete carbonation depth measuring instrument according to claim 1, characterized in that, The drilling device includes a drill bit, a rotating component, and a drive motor. The drill bit is detachably connected to the rotating component. One end of the rotating component has a slot for engaging the rotating head, and the other end of the rotating component is connected to the output end of the drive motor via a coupling.

3. The concrete carbonation depth measuring instrument according to claim 2, characterized in that, The phenolphthalein storage device includes a storage bladder, an infusion pump, and an infusion nozzle. The storage bladder is located inside a gun-type housing, and an infusion tube connects the storage bladder and the infusion nozzle. The infusion tube is a flexible telescopic tube, and a portion of the infusion tube extends out of the perforation of the plate. The infusion pump is installed at the connection between the infusion tube and the storage bladder. The infusion nozzle is located at the end of the infusion tube away from the infusion pump, and multiple spray holes are provided on the infusion nozzle.

4. The concrete carbonation depth measuring instrument according to claim 3, characterized in that, The gun-shaped outer shell is provided with a liquid inlet for adding phenolphthalein reagent, and the liquid inlet is connected to the liquid reservoir.

5. The concrete carbonation depth measuring instrument according to claim 1, characterized in that, The depth detection device includes a detection probe for testing carbonization depth, a fixing member fixed to one end of the detection probe, and a transmission assembly for moving the detection probe to extend or retract. The detection probe is engraved with scale lines. One end of the fixing member is fixedly connected to the detection probe, and the other end is movably connected to the transmission assembly.

6. The concrete carbonation depth measuring instrument according to claim 1, characterized in that, A control device is provided at the end of the cavity of the gun-type housing. The control device includes a switch button, a controller, and a battery. Multiple switches are provided, and the multiple switches control the opening and closing of the drilling device, the phenolphthalein reservoir, and the depth detection device, respectively. The controller is electrically connected to the drilling device, the phenolphthalein reservoir, and the depth detection device, respectively. The battery is used to provide power to the controller and the drive motor.

7. The concrete carbonation depth measuring instrument according to claim 1, characterized in that, A dust cover is provided at the opening of the gun-type outer shell. The dust cover is fitted onto the leveling plate, and the side of the dust cover facing the concrete increases outward in a trumpet shape.

8. The concrete carbonation depth measuring instrument according to claim 6, characterized in that, The gun-shaped housing is also equipped with a miniature display, which is connected to the control device and is used to display the data measured by the detection probe.

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