Automatic concrete carbonization depth measuring device

Abstract

The utility model provides an automatic concrete carbonization depth measuring device, and relates to the field of building construction. The concrete carbonization depth automatic measuring device comprises a rack, a sliding mechanism, a drilling mechanism and a spraying mechanism. The sliding mechanism is installed on the rack, the drilling mechanism and the spraying mechanism are both installed on the sliding mechanism, and the sliding mechanism is used for driving the drilling mechanism and the spraying mechanism to be close to or away from a concrete sample; the drilling mechanism is used for drilling a concrete sample, and the spraying mechanism is used for spraying a phenolphthalein alcohol solution to a drilling position. The measuring device can improve the automatic measuring degree, and is low in labor intensity, high in efficiency and small in error.

Description

Technical Field

[0001] The utility model relates to the field of building construction, in particular to an automatic measuring device for concrete carbonization depth. Background Art

[0002] In the prior art, the measurement steps of the concrete carbonization depth value are as follows:

[0003] 1. Use tools to form holes with a diameter of about 15 mm on the surface of the measuring area, and the depth should be greater than the carbonation depth of the concrete;

[0004] 2. Powder and debris in the holes should be removed and should not be scrubbed with water;

[0005] 3. A 1% to 2% phenol alcohol solution should be dripped on the edge of the inner wall of the hole. When the boundary between carbonized and unsulfonated concrete is clear, a carbonization depth measuring instrument should be used to measure the vertical distance from the interface of carbonized and uncarbonized concrete to the concrete surface. The measurement should be made three times, and each reading should be accurate to 0.25mm.

[0006] 4. The average value of three measurements should be taken as the test result, and it should be accurate to 0.5mm.

[0007] The inventors have found that the existing concrete carbonization depth measurement has at least the following disadvantages:

[0008] Manual work has high labor intensity, low efficiency and large errors. Utility Model Content

[0009] The utility model aims to provide an automatic measuring device for the carbonation depth of concrete, which can improve the degree of automatic measurement, has low labor intensity, high efficiency and small error.

[0010] The embodiment of the utility model is achieved as follows:

[0011] In a first aspect, the utility model provides a device for automatically measuring the carbonation depth of concrete, comprising:

[0012] A frame, a sliding mechanism, a drilling mechanism and a spraying mechanism, wherein the sliding mechanism is installed on the frame, the drilling mechanism and the spraying mechanism are both installed on the sliding mechanism, and the sliding mechanism is used to drive the drilling mechanism and the spraying mechanism to approach or move away from a concrete sample; the drilling mechanism is used to drill holes in the concrete sample, and the spraying mechanism is used to spray a phenolphthalein alcohol solution onto the drilled holes.

[0013] In an optional embodiment, a brakeable traveling mechanism is installed at the bottom of the frame, and the traveling mechanism is used to drive the frame to move relative to the concrete sample, thereby driving the spraying mechanism to move to the drilling hole.

[0014] Based on the above scheme, when the drilling position needs to be adjusted, the traveling mechanism is in a non-braking state, and the traveling mechanism can drive the frame to move relative to the concrete surface, so that when it moves to the set position, it is adjusted to a braking state and then performs drilling and spraying operations, with a high degree of automation and high efficiency. The overall structure is stable during drilling and the drilling quality is high.

[0015] In an optional embodiment, the walking mechanism includes walking wheels, a telescope, a vacuum pump and a suction cup, the walking wheels are installed at the bottom of the frame, the telescope and the vacuum pump are both installed on the frame, the suction cup is connected to the telescopic end of the telescope, the telescope is used to drive the suction cup to rise and fall, and the vacuum pump is used to adjust the air pressure in the suction cup.

[0016] Based on the above scheme, when the position needs to be adjusted, the suction cup is separated from the concrete surface and is not adsorbed on the concrete surface. At this time, the running wheels are used to drive the frame to move, thereby adjusting the drilling position and the spraying position. When the frame moves to the set position, the telescopic device drives the suction cup to descend and contact the concrete surface, and the vacuum pump starts to absorb the gas in the suction cup, so that negative pressure is generated in the suction cup, and the suction cup can be firmly adsorbed on the concrete surface to achieve braking.

[0017] In an optional embodiment, the sliding mechanism includes a sliding plate, a motor, a lead screw and a sliding block, the sliding plate is slidably matched with the frame, the motor is fixed on the frame, the lead screw is connected to the output shaft of the motor, the sliding block is screwed outside the lead screw and is slidably matched with the frame, and the sliding block is fixedly connected to the sliding plate; the drilling mechanism and the spraying mechanism are both installed on the sliding plate.

[0018] Based on the above scheme, when the drilling depth needs to be adjusted, the motor starts at the same time as the drilling mechanism is started, driving the lead screw to rotate, thereby driving the sliding block and the sliding plate to descend. In this way, the drilling mechanism is lowered to perform drilling operations, and the operation is convenient and flexible.

[0019] In an optional embodiment, the drilling mechanism includes a driver, a connecting shaft, a sliding sleeve and a drill rod, the driver is mounted on the sliding plate, the connecting shaft is connected to the driver, the driver is used to drive the connecting shaft to rotate around a first axis, the drill rod and the connecting shaft are rotatably matched around a second axis perpendicular to the first axis, the sliding sleeve is slidably mounted on the connecting shaft, and the sliding sleeve can be simultaneously sleeved on the connecting shaft and the drill rod to limit the rotation of the drill rod relative to the connecting shaft.

[0020] Based on the above scheme, when drilling is required, the driver is started, driving the connecting shaft, the sleeve and the drill rod to rotate together, that is, the sleeve is in a position where it is simultaneously sleeved outside the connecting shaft and the drill rod, and the sleeve and the connecting shaft are relatively fixed in the axial direction of the connecting shaft. At this time, the drill rod will not rotate or fold relative to the connecting shaft, but rotate under the drive of the connecting shaft, thereby drilling a hole at the corresponding position of the concrete. After the drilling is completed, the drill rod is lifted, the drill rod leaves the drill hole, and the sleeve is slid to leave the drill rod and completely sleeved on the connecting shaft. The drill rod can rotate and fold relative to the connecting shaft, and the drill rod is not easy to contact the concrete surface, so it is not easy to affect the subsequent spraying mechanism to descend and spray liquid on the drill hole.

[0021] In an optional embodiment, the sliding sleeve is mounted on the sliding plate via an elastic member, and the elastic member is used to allow the sliding sleeve to have a movement tendency of being simultaneously sleeved on the outside of the connecting shaft and the drill rod.

[0022] Based on the above solution, the sliding sleeve is always kept in a position to limit the rotation of the drill rod and the connecting shaft, and drilling with the drill rod is more convenient.

[0023] In an optional embodiment, a limiting protrusion is provided on the connecting shaft, and the sliding sleeve is sleeved outside the connecting shaft and abuts against the limiting protrusion under the action of the elastic member.

[0024] Based on the above solution, excessive sliding of the sliding sleeve is avoided, thereby improving the firmness of the fit between the sliding sleeve, the connecting shaft and the drill rod.

[0025] In an optional embodiment, the spraying mechanism includes a liquid storage tank, a water pump and a nozzle, the liquid storage tank is installed on the sliding plate, the water pump is installed in the liquid storage tank, the nozzle is connected to the liquid outlet of the water pump, and the nozzle is used to transport phenolphthalein alcohol solution into the borehole.

[0026] Based on the above scheme, after the water pump is started, the phenolphthalein alcohol solution stored in the liquid storage tank can be pumped into the nozzle, and then sprayed out from the nozzle into the drill hole, which is easy to operate.

[0027] In an optional embodiment, the nozzle is configured as a hose.

[0028] Based on the above solution, the angle of the nozzle is easy to adjust and is not easy to interfere with the concrete when the drill rod is drilling.

[0029] In an optional embodiment, the automatic measurement device for carbonization depth of concrete further includes an image collector installed on the sliding mechanism, and the image collector is used to acquire an image of the inner wall surface of the borehole.

[0030] Based on the above scheme, after the phenolphthalein alcohol solution is sprayed into the borehole, the lower uncarbonized part of the inner wall of the borehole is purple-red, and the upper carbonized part is colorless. The image information of the inner wall of the borehole is obtained by the image collector, and the depth of the colorless part of the borehole is judged to obtain the carbonization depth.

[0031] It should be understood that the carbonization depth can also be measured manually using a carbonization depth measuring instrument.

[0032] The beneficial effects of the embodiments of the utility model are:

[0033] In summary, the automatic measuring device for the carbonization depth of concrete provided in this embodiment places the frame on the concrete surface, and aligns the position of the drilling mechanism with the position to be drilled, starts the drilling mechanism, and enables the sliding mechanism to drive the drilling mechanism to move close to the concrete, so that the drilling mechanism is used to drill a hole in the set position of the concrete, and after the drilling is completed, the spraying mechanism is adjusted to the top of the drill hole, and the phenolphthalein alcohol solution is added to the drill hole by the spraying mechanism. The uncarbonized part of the hole wall of the drill hole is purple-red, and the carbonized part is colorless. The size of the colorless part can be obtained by an image recognition module or a measuring instrument, that is, the carbonization depth of the concrete is obtained. Integrating multiple mechanisms together has diversified functions and can improve the degree of automation of measurement, saving time and effort, and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 This is a schematic diagram of the structure of the automatic measuring device for concrete carbonization depth according to an embodiment of the utility model;

[0036] Figure 2 It is a structural schematic diagram of the drilling mechanism of an embodiment of the utility model.

[0037] icon:

[0038] 100-frame; 200-sliding mechanism; 210-sliding plate; 220-motor; 230-screw; 240-sliding block; 300-drilling mechanism; 310-driver; 320-connecting shaft; 330-sleeve; 340-drill rod; 350-elastic member; 360-limiting protrusion; 400-spraying mechanism; 410-liquid storage tank; 420-water pump; 430-spraying pipe; 500-traveling mechanism; 510-traveling wheel; 520-retractor; 530-vacuum pump; 540-suction cup; DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] This embodiment provides an automatic measurement device for concrete carbonization depth, which has a high degree of automation, high efficiency, and high accuracy of measurement results with low errors.

[0046] Please combine Figure 1 and Figure 2 In this embodiment, the automatic measuring device for concrete carbonization depth includes a frame 100, a sliding mechanism 200, a drilling mechanism 300 and a spraying mechanism 400. The sliding mechanism 200 is mounted on the frame 100, the drilling mechanism 300 and the spraying mechanism 400 are both mounted on the sliding mechanism 200, and the sliding mechanism 200 is used to drive the drilling mechanism 300 and the spraying mechanism 400 to approach or move away from the concrete sample; the drilling mechanism 300 is used to drill a hole in the concrete sample, and the spraying mechanism 400 is used to spray the phenolphthalein alcohol solution to the drilled hole.

[0047] Based on the above, the working principle of the automatic measurement device for concrete carbonization depth provided in this embodiment is as follows:

[0048] The frame 100 is placed on the concrete surface, and the position of the drilling mechanism 300 is aligned with the position to be drilled, the drilling mechanism 300 is started, and the sliding mechanism 200 drives the drilling mechanism 300 to move close to the concrete, so that the drilling mechanism 300 is used to drill a hole in the set position of the concrete. After the drilling is completed, the spraying mechanism 400 is adjusted to the top of the drill hole, and the phenolphthalein alcohol solution is added to the drill hole by the spraying mechanism 400. The uncarbonized part of the hole wall of the drill hole is purple-red, and the carbonized part is colorless. The size of the colorless part can be obtained through an image recognition module or a measuring instrument, that is, the carbonization depth of the concrete is obtained. Integrating multiple mechanisms together has diversified functions and can improve the degree of automation of measurement, saving time and effort, and high efficiency.

[0049] The following embodiments illustrate the details of the automatic measurement device for carbonization depth of concrete of the present application by way of examples.

[0050] In this embodiment, optionally, a brakeable walking mechanism 500 is installed at the bottom of the frame 100, and the walking mechanism 500 is used to drive the frame 100 to move relative to the concrete sample, so as to drive the spraying mechanism 400 to move to the drilling position. When the drilling position needs to be adjusted, the walking mechanism 500 is in a non-braking state, and the walking mechanism 500 can drive the frame 100 to move relative to the concrete surface, so that when it moves to the set position, it is adjusted to a braking state and then performs operations such as drilling and spraying, with a high degree of automation and high efficiency. The overall structure is stable during drilling, and the drilling quality is high.

[0051] Furthermore, the walking mechanism 500 includes a walking wheel 510, a telescopic device 520, a vacuum pump 530 and a suction cup 540. The walking wheel 510 is installed at the bottom of the frame 100, the telescopic device 520 and the vacuum pump 530 are both installed on the frame 100, the suction cup 540 is connected to the telescopic end of the telescopic device 520, the telescopic device 520 is used to drive the suction cup 540 to rise and fall, and the vacuum pump 530 is used to adjust the air pressure in the suction cup 540. When the position needs to be adjusted, the suction cup 540 is in a state of being separated from the concrete surface, and the suction cup 540 is not adsorbed on the concrete surface. At this time, the walking wheel 510 is used to drive the frame 100 to move, so as to adjust the drilling position and the spraying position. When the frame 100 moves to the set position, the telescopic device 520 drives the suction cup 540 to descend and contact with the concrete surface, and the vacuum pump 530 starts to absorb the gas in the suction cup 540, so that negative pressure is generated in the suction cup 540, and the suction cup 540 can be firmly adsorbed on the concrete surface to achieve braking. It should be understood that when the brake needs to be released, the vacuum pump 530 or other blowing equipment can be used to blow air into the suction cup 540.

[0052] In addition, four running wheels 510 may be installed at the bottom of the frame 100 , and a suction cup 540 may be configured at each running wheel 510 .

[0053] In this embodiment, the sliding mechanism 200 optionally includes a sliding plate 210, a motor 220, a lead screw 230 and a sliding block 240, the sliding plate 210 is slidably matched with the frame 100, the motor 220 is fixed on the frame 100, the lead screw 230 is connected to the output shaft of the motor 220, the sliding block 240 is screwed outside the lead screw 230 and is slidably matched with the frame 100, and the sliding block 240 is fixedly connected to the sliding plate 210; the drilling mechanism 300 and the spraying mechanism 400 are both installed on the sliding plate 210. When it is necessary to adjust the drilling depth, when the drilling mechanism 300 is started, the motor 220 is started, driving the lead screw 230 to rotate, thereby driving the sliding block 240 and the sliding plate 210 to descend, so that the drilling mechanism 300 is lowered to perform the drilling operation, and the operation is convenient and flexible.

[0054] It should be understood that a guide rod may be provided on the frame 100 , and the sliding plate 210 may slidably cooperate with the guide rod, so that the sliding of the sliding plate 210 is more stable and will not rotate relative to the frame 100 .

[0055] In this embodiment, optionally, the drilling mechanism 300 includes a driver 310, a connecting shaft 320, a sleeve 330 and a drill rod 340. The driver 310 is installed on the sliding plate 210, and the connecting shaft 320 is connected to the driver 310. The driver 310 is used to drive the connecting shaft 320 to rotate around a first axis. The drill rod 340 and the connecting shaft 320 are rotatably matched around a second axis perpendicular to the first axis. The sleeve 330 is slidably installed on the connecting shaft 320, and the sleeve 330 can be simultaneously sleeved on the outside of the connecting shaft 320 and the drill rod 340 to limit the rotation of the drill rod 340 relative to the connecting shaft 320.

[0056] It should be understood that when drilling is required, the driver 310 is started, driving the connecting shaft 320, the sleeve 330 and the drill rod 340 to rotate together, that is, the sleeve 330 is in a position where it is simultaneously sleeved outside the connecting shaft 320 and the drill rod 340, and the sleeve 330 and the connecting shaft 320 are relatively fixed in the axial direction of the connecting shaft 320. At this time, the drill rod 340 will not rotate or fold relative to the connecting shaft 320, but rotate under the drive of the connecting shaft 320, thereby drilling a hole at a corresponding position of the concrete. After the drilling is completed, the drill rod 340 is lifted up, the drill rod 340 leaves the drill hole, and the sleeve 330 is slid to leave the drill rod 340 and completely sleeved on the connecting shaft 320. The drill rod 340 can rotate and fold relative to the connecting shaft 320, and the drill rod 340 is not easy to contact the concrete surface, so it is not easy to affect the subsequent operation of the spraying mechanism 400 descending to spray liquid on the drill hole.

[0057] It should be understood that the drive 310 may be an electric motor.

[0058] Optionally, the sliding sleeve 330 is mounted on the sliding plate 210 through an elastic member 350, and the elastic member 350 is used to make the sliding sleeve 330 have a movement tendency to be simultaneously sleeved outside the connecting shaft 320 and the drill rod 340. The elastic member 350 can be a spring. The sliding sleeve 330 is always kept in a position to limit the rotation of the drill rod 340 and the connecting shaft 320, and the drilling of the drill rod 340 is more convenient.

[0059] Furthermore, a limiting protrusion 360 is provided on the connecting shaft 320, and the sliding sleeve 330 is sleeved outside the connecting shaft 320 and abuts against the limiting protrusion 360 under the action of the elastic member 350. Excessive sliding of the sliding sleeve 330 is avoided, thereby improving the firmness of the matching of the sliding sleeve 330, the connecting shaft 320 and the drill rod 340.

[0060] In this embodiment, optionally, the spraying mechanism 400 includes a liquid storage tank 410, a water pump 420 and a nozzle 430. The liquid storage tank 410 is installed on the sliding plate 210, the water pump 420 is installed in the liquid storage tank 410, and the nozzle 430 is connected to the liquid outlet of the water pump 420. The nozzle 430 is used to transport the phenolphthalein alcohol solution into the borehole. After the water pump 420 is started, the phenolphthalein alcohol solution stored in the liquid storage tank 410 can be pumped into the nozzle 430, and then sprayed from the nozzle 430 into the borehole, which is easy to operate.

[0061] It should be understood that the nozzle 430 can be set as a hose. The angle of the nozzle 430 is easy to adjust, and when the drill rod 340 is drilling a hole, the nozzle 430 can be adjusted to a folded position, that is, the nozzle 430 is bent and attached to the sliding plate 210, and is not easy to contact the concrete and interfere with the concrete. In addition, a buckle can be set at the bottom of the sliding plate 210 to clamp the hose.

[0062] In this embodiment, the automatic measurement device for concrete carbonization depth may further include an image collector installed on the sliding mechanism 200, and the image collector is used to obtain an image of the inner wall surface of the borehole. After the phenolphthalein alcohol solution is sprayed into the borehole, the lower uncarbonized part of the inner wall surface of the borehole is purple-red, and the upper carbonized part is colorless. The image information of the inner wall surface of the borehole is obtained by the image collector, and the depth of the colorless part of the borehole is judged to obtain the carbonization depth.

[0063] It should be understood that the carbonization depth can also be measured manually using a carbonization depth measuring instrument.

[0064] In addition, the acquired data can be transmitted to the host storage via the local area network for subsequent printing and query.

[0065] The automatic measuring device for concrete carbonization depth provided in this embodiment has a high degree of automation, high efficiency and high accuracy of measurement results.

[0066] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic measuring device for concrete carbonization depth, characterized in that: include: A frame (100), a sliding mechanism (200), a drilling mechanism (300) and a spraying mechanism (400), wherein the sliding mechanism (200) is mounted on the frame (100), the drilling mechanism (300) and the spraying mechanism (400) are both mounted on the sliding mechanism (200), the sliding mechanism (200) is used to drive the drilling mechanism (300) and the spraying mechanism (400) to approach or move away from a concrete sample; the drilling mechanism (300) is used to drill a hole in the concrete sample, and the spraying mechanism (400) is used to spray a phenolphthalein alcohol solution onto the drilled hole.

2. The automatic measuring device for concrete carbonization depth according to claim 1 is characterized in that: A brakeable walking mechanism (500) is installed at the bottom of the frame (100), and the walking mechanism (500) is used to drive the frame (100) to move relative to the concrete sample, thereby driving the spraying mechanism (400) to move to the drilling location.

3. The automatic measuring device for concrete carbonization depth according to claim 2 is characterized in that: The walking mechanism (500) comprises a walking wheel (510), a telescopic device (520), a vacuum pump (530) and a suction cup (540); the walking wheel (510) is mounted on the bottom of the frame (100); the telescopic device (520) and the vacuum pump (530) are both mounted on the frame (100); the suction cup (540) is connected to the telescopic end of the telescopic device (520); the telescopic device (520) is used to drive the suction cup (540) to rise and fall; and the vacuum pump (530) is used to adjust the air pressure in the suction cup (540).

4. The automatic measuring device for concrete carbonization depth according to claim 1 is characterized in that: The sliding mechanism (200) comprises a sliding plate (210), a motor (220), a lead screw (230) and a sliding block (240); the sliding plate (210) is slidably matched with the frame (100); the motor (220) is fixed on the frame (100); the lead screw (230) is connected to the output shaft of the motor (220); the sliding block (240) is screwed outside the lead screw (230) and is slidably matched with the frame (100); the sliding block (240) is fixedly connected to the sliding plate (210); the drilling mechanism (300) and the spraying mechanism (400) are both installed on the sliding plate (210).

5. The automatic measuring device for concrete carbonization depth according to claim 4 is characterized in that: The drilling mechanism (300) comprises a driver (310), a connecting shaft (320), a sleeve (330) and a drill rod (340); the driver (310) is mounted on the sliding plate (210); the connecting shaft (320) is connected to the driver (310); the driver (310) is used to drive the connecting shaft (320) to rotate around a first axis; the drill rod (340) and the connecting shaft (320) are rotatably matched around a second axis perpendicular to the first axis; the sleeve (330) is slidably mounted on the connecting shaft (320); and the sleeve (330) can be simultaneously sleeved on the connecting shaft (320) and the drill rod (340) to limit the rotation of the drill rod (340) relative to the connecting shaft (320).

6. The automatic measuring device for carbonization depth of concrete according to claim 5, characterized in that: The sliding sleeve (330) is installed on the sliding plate (210) via an elastic member (350), and the elastic member (350) is used to enable the sliding sleeve (330) to have a movement tendency of being simultaneously sleeved outside the connecting shaft (320) and the drill rod (340).

7. The automatic measuring device for concrete carbonization depth according to claim 6, characterized in that: A limiting protrusion (360) is provided on the connecting shaft (320), and the sliding sleeve (330) is sleeved outside the connecting shaft (320) and abuts against the limiting protrusion (360) under the action of the elastic member (350).

8. The automatic measuring device for carbonization depth of concrete according to claim 4, characterized in that: The spraying mechanism (400) comprises a liquid storage tank (410), a water pump (420) and a nozzle (430); the liquid storage tank (410) is installed on the sliding plate (210); the water pump (420) is installed in the liquid storage tank (410); the nozzle (430) is connected to the liquid outlet of the water pump (420); and the nozzle (430) is used to transport the phenolphthalein alcohol solution into the borehole.

9. The automatic measuring device for concrete carbonization depth according to claim 8, characterized in that: The nozzle (430) is configured as a hose.

10. The automatic measuring device for concrete carbonization depth according to claim 1, characterized in that: The automatic concrete carbonization depth measuring device further comprises an image collector installed on the sliding mechanism (200), and the image collector is used to acquire an image of the inner wall surface of the borehole.

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