A device and method for measuring the carbonation depth of concrete

Abstract

This application relates to a device and method for measuring the carbonation depth of concrete, belonging to the technical field of concrete testing. It includes a measuring instrument body, a drilling assembly comprising a motor and a drill bit, a first through hole for the drill bit to extend from the side wall of the measuring instrument body, a mounting plate fixed to the bottom of the motor, the mounting plate being slidably connected to the bottom wall of a first receiving cavity, and a driving component for moving the motor toward the first through hole within the first receiving cavity; a fixing sleeve fixed to the outer wall of the measuring instrument body with the first through hole, the centerline of the fixing sleeve coinciding with the centerline of the first through hole, a dust cover made of rubber fixed to the end of the fixing sleeve away from the measuring instrument body, a collection box connected to the bottom of the measuring instrument body, a suction pipe connected between the collection box and the fixing sleeve, and a suction fan installed on the suction pipe. This application effectively reduces the dust generated by the drilling process of the concrete carbonation depth measuring instrument from scattering in all directions.

Description

Technical Field

[0001] This application relates to the field of concrete testing, and in particular to a device and method for measuring the carbonation depth of concrete. Background Technology

[0002] Carbonation of concrete is a form of chemical corrosion. Carbon dioxide gas from the air penetrates into the concrete and reacts chemically with its alkaline components to form carbonates and water, thus reducing the alkalinity of the concrete. This process is called concrete carbonation, also known as neutralization. Due to carbonation, the reduced alkalinity of the concrete destroys the dense oxide film formed on the surface of the reinforcing steel in a highly alkaline environment, leading to corrosion of the steel and affecting the structural strength of the concrete.

[0003] The carbonation depth of concrete is usually measured using a concrete carbonation depth measuring instrument. However, when existing concrete carbonation depth measuring instruments drill holes in the concrete, the dust generated is scattered everywhere, which can cause harm to workers if inhaled. Summary of the Invention

[0004] To reduce the possibility of dust generated by the drilling stone of the concrete carbonation depth measuring instrument scattering everywhere, this application provides a concrete carbonation depth measuring device and measuring method.

[0005] The concrete carbonation depth measuring device and method provided in this application adopts the following technical solution: On one hand, a concrete carbonation depth measuring device includes a measuring instrument body, a first receiving cavity on the measuring instrument body, a drilling assembly in the first receiving cavity, the drilling assembly including a motor and a drill bit, a coupling installed between the motor and the drill bit, a first through hole for the drill bit to extend through on the side wall of the measuring instrument body, a mounting plate fixed to the bottom of the motor, the mounting plate being slidably connected to the bottom wall of the first receiving cavity, and a driving component for driving the motor to move toward the first through hole in the first receiving cavity; A fixing sleeve is fixed on the outer wall of the measuring instrument body with a first through hole. The center line of the fixing sleeve coincides with the center line of the first through hole. A dust cover made of rubber is fixed to the end of the fixing sleeve away from the measuring instrument body. A collection box is connected to the bottom of the measuring instrument body. A dust suction pipe is connected between the collection box and the fixing sleeve. A dust suction fan is installed on the dust suction pipe.

[0006] By adopting the above technical solution, when drilling into concrete, the drive unit drives the motor and drill bit to move towards the first through hole. When the drill bit extends beyond the first through hole and reaches the appropriate position, the drive unit stops driving, the motor is started, and the motor drives the coupling and drill bit to rotate. Then, the dust cover is brought into contact with the concrete surface where the hole needs to be drilled, the drill bit is placed at the position to be drilled, and the drill bit is pushed in. At this time, the dust cover made of rubber will deform to a certain extent, and the dust cover will always be in close contact with the concrete wall. The dust extraction fan is started, and the dust generated by the drill during drilling will be sucked away by the dust extraction fan. The dust will enter the collection box through the dust extraction pipe, thereby reducing the possibility of workers inhaling dust.

[0007] Optionally, a rubber sleeve is fitted onto the outer side of the coupling, and the outer diameter of the rubber sleeve is equal to the diameter of the first through hole. When the drill bit drills, the rubber sleeve is located in the first through hole.

[0008] By adopting the above technical solution, when the drill bit is drilling, the rubber sleeve is located in the first through hole, thereby reducing the possibility of dust entering the first receiving cavity and facilitating the entry of dust from the dust removal pipe into the collection box.

[0009] Optionally, a base block is fixed to the bottom of the measuring instrument body near the side of the suction pipe, and a third slider arranged in a T-shape is fixed to the top of the collection box. A third sliding groove is provided on the base block for the third slider to slide into. A connecting pipe is fixed to the side of the collection box near the suction pipe, and a connecting component is provided between the connecting pipe and the suction pipe. The suction pipe and the connecting pipe are connected and fixed by the connecting component.

[0010] By adopting the above technical solution, the third slider and the third groove are slidably inserted into each other, and the suction pipe and the connecting pipe are connected and fixed by the connecting component, which facilitates the disassembly of the collection box.

[0011] Optionally, a first slider is fixed to the bottom of the mounting plate, and a first groove is provided on the bottom wall of the first receiving cavity for the first slider to slide.

[0012] By adopting the above technical solution, when the driving component drives the motor to slide towards the first through hole, the first slider slides along the first slide groove, thereby increasing the stability of the mounting plate and the motor when they move.

[0013] Optionally, the first chute penetrates the bottom wall of the first receiving cavity, the bottom of the first slider is connected to an installation block, both sides of the installation block are connected to positioning blocks, each positioning block is provided with a locking bolt, the bottom of the measuring instrument body is provided with a locking hole, when the rubber sleeve is inserted into the first through hole, the locking bolt penetrates the positioning block and is threadedly connected to the locking hole, and the installation block contacts the side of the collection box away from the suction pipe.

[0014] By adopting the above technical solution, before the drill bit drills, the mounting block moves to one side of the collection box and contacts the collection box, which increases the stability of the collection box and reduces the possibility of the collection box falling off the bottom block. The positioning block is fixed to the measuring instrument body by locking bolts, thereby fixing the mounting plate and motor, which increases the stability of the drill when drilling.

[0015] Optionally, a rotating block is fixed at one end of the mounting block near the first slider, an mounting groove is provided at the bottom of the first slider, a rotating shaft is fixed on both sides of the rotating block, the rotating shaft is rotatably connected to the groove wall of the mounting groove, and a holding groove is provided on both sides of the first sliding groove at the bottom of the measuring instrument body. A second slider is fixed on the side of the positioning block near the mounting block. A second slide groove is provided on the mounting block for the second slider to slide. When the drill bit is not drilling, the mounting block is set horizontally. The mounting block is located in the first slide groove, and the positioning block is located in the holding groove. A limiting block is installed at the bottom of the measuring instrument body to prevent the mounting block from falling out of the first slide groove.

[0016] By adopting the above technical solution, when drilling is required in concrete, the limiting block is moved first, so that the mounting block rotates out of the first slide groove and is set vertically. Then, the driving component drives the motor, mounting plate, slider and mounting block to move in the direction of the first through hole. When the drill bit is not used, the mounting block is set horizontally and placed in the first slide groove, which reduces the space occupied.

[0017] Optionally, a limiting groove is formed on the side wall of the mounting block, and a limiting rod and a spring are provided in the limiting groove. One end of the spring is fixed to a connecting block, and the other end of the spring is fixed to the groove wall of the limiting groove. The end of the connecting block away from the spring is fixed to the limiting rod. A first limiting hole is formed on the rotating block, and a second limiting hole is formed on the slider. When the mounting block is set vertically, under the action of the spring, the limiting rod passes through the first limiting hole and is inserted into the second limiting hole.

[0018] By adopting the above technical solution, when the mounting block is set vertically, the limiting rod passes through the first limiting hole and is inserted into the second limiting hole under the action of the spring, thereby increasing the stability between the mounting block and the slider.

[0019] Optionally, the measuring instrument body has a second receiving cavity, in which a solution tank, a liquid outlet pipe and a water pump are provided. One end of the liquid outlet pipe is inserted into the solution tank, and the other end of the liquid outlet pipe extends out of the outer wall of the measuring instrument body and is fixed with a nozzle. The water pump is installed on the liquid outlet pipe.

[0020] By adopting the above technical solution, when spraying solution into the borehole, the water pump is started, and the water pump sprays the solution in the solution tank into the borehole through the nozzle.

[0021] On the other hand, this application also provides a method for measuring the carbonation depth of concrete, comprising the following steps: S1. The electric push rod drives the motor and drill bit to move towards the first through hole. The drill bit extends out of the outer wall of the measuring instrument body. The drill bit is located inside the dust cover. The end of the dust cover is close to the concrete wall. The motor is started and the drill bit drills into the concrete wall. When drilling, the dust extraction fan is started and the dust extraction fan transports the dust generated during drilling to the collection box. S2. After drilling is completed, aim the nozzle at the borehole, start the water pump, and spray the phenolphthalein alcohol solution in the solution tank into the borehole.

[0022] S3. After the concrete in the borehole changes color, the carbonation is measured using the probe on the measuring instrument body.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The dust cover will remain in close contact with the concrete wall. When the dust extraction fan is turned on, the dust generated during drilling will be sucked away by the dust extraction fan and will enter the collection box through the dust extraction pipe, thereby reducing the possibility of workers inhaling dust. 2. When the drill bit is drilling, the rubber sleeve is located in the first through hole, thereby reducing the possibility of dust entering the first receiving cavity and facilitating the entry of dust from the dust removal pipe into the collection box; 3. Before the drill bit drills, the mounting block moves to one side of the collection box and contacts the collection box, which increases the stability of the collection box and reduces the possibility of the collection box falling off the bottom block. The positioning block is fixed to the measuring instrument body by locking bolts, thereby fixing the mounting plate and motor, which increases the stability of the drill when drilling. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the overall structure of this application.

[0025] Figure 2 This is a schematic diagram illustrating the punching component in this application.

[0026] Figure 3 This is a schematic diagram illustrating the liquid spraying assembly in this application.

[0027] Figure 4 This is a schematic diagram illustrating the collection box, connecting pipe, and dust removal pipe in this application.

[0028] Figure 5 This is a schematic diagram illustrating the bottom block and the third slider in this application.

[0029] Figure 6 This is a schematic diagram illustrating the mounting block and positioning block in this application.

[0030] Figure 7 This is a schematic diagram illustrating the connecting block, spring, and limit rod in this application.

[0031] Figure 8 This is a schematic diagram illustrating that the mounting block in this application is in a horizontal state.

[0032] Explanation of reference numerals in the attached drawings: 1. Measuring instrument body; 11. First receiving cavity; 111. First through hole; 112. First slide groove; 12. First cover plate; 13. Second receiving cavity; 14. Second cover plate; 15. Fixing sleeve; 151. Dust cover; 152. Dust suction pipe; 153. Dust suction fan; 16. Base block; 161. Third slide groove; 17. Holding tank; 18. Limiting block; 181. Rotating shaft; 2. Measuring component; 21. Probe; 22. Display screen; 23. First button; 3. Spraying component; 31. Solution tank; 32. Discharge pipe; 321. Nozzle; 33. Water pump; 4. Drilling component; 41. Motor; 411. Mounting plate; 412. First slider; 413. Mounting groove; 42. Drill bit; 43. Coupling; 431. Rubber sleeve; 44. Electric push rod; 5. Collection box; 51. Connecting pipe; 52. Third slider; 6. Connecting assembly; 61. First connecting plate; 62. Second connecting plate; 7. Mounting block; 71. Rotating block; 711. Rotating shaft; 72. Positioning block; 721. Second slider; 722. Locking bolt; 723. Locking hole; 73. Second slide groove; 74. Limiting groove; 741. Limiting rod; 742. Spring; 743. Connecting block; 75. First limiting hole; 76. Second limiting hole. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 This application will be described in further detail.

[0034] This application discloses a device for measuring the carbonation depth of concrete. (Refer to...) Figure 1 , Figure 2 and Figure 3 The concrete carbonation depth measuring device includes a measuring instrument body 1, and the measuring instrument body 1 is equipped with a measuring component 2, a spraying component 3 and a drilling component 4.

[0035] The measuring instrument body 1 is provided with a first receiving cavity 11, and the drilling assembly 4 is located in the first receiving cavity 11. The drilling assembly 4 includes a motor 41 and a drill bit 42. A coupling 43 is installed on the output shaft of the motor 41, and the end of the coupling 43 away from the output shaft of the motor 41 is connected to the drill bit 42.

[0036] A first through hole 111 is provided on the outer wall of the measuring instrument body 1, through which the drill bit 42 can extend. A mounting plate 411 is fixed to the bottom of the motor 41, and the mounting plate 411 is slidably connected to the bottom wall of the first receiving cavity 11. A driving component for moving the motor 41 is provided in the first receiving cavity 11. The driving component is an electric push rod 44, which is fixed to the bottom wall of the first receiving cavity 11. The electric push rod 44 can drive the motor 41 to move in the direction of the first through hole 111, thereby allowing the drill bit 42 to extend out of the first through hole 111.

[0037] The bottom of the mounting plate 411 is fixed with a first slider 412. The bottom wall of the first receiving cavity 11 is provided with a first sliding groove 112. The first slider 412 is slidably connected to the first sliding groove 112. When the electric push rod 44 drives the motor 41 and the mounting plate 411 to slide in the direction of the first through hole 111, the first slider 412 slides along the length direction of the first sliding groove 112.

[0038] A first cover plate 12 is provided at the opening of the first receiving cavity 11, and one end of the first cover plate 12 is rotatably connected to the outer wall of the measuring instrument body 1 via a hinge.

[0039] When measuring the carbonation depth of concrete, the first step is to drill a hole in the concrete using the drilling assembly 4. The electric push rod 44 pushes the motor 41 and the drill bit 42 to move towards the first through hole 111. The drill bit 42 extends out of the first through hole 111. Then, the motor 41 is started, and the motor 41 drives the drill bit 42 to rotate, and the drill bit 42 drills a hole in the concrete.

[0040] A rubber sleeve 431 is fitted onto the coupling 43. When the drill bit 42 drills a hole in the concrete, the rubber sleeve 431 is inserted into the first through hole 111. The center line of the rubber sleeve 431 coincides with the center line of the first through hole 111, and the rubber sleeve 431 blocks the first through hole 111.

[0041] The measuring instrument body 1 is provided with a second receiving cavity 13, the liquid spraying assembly 3 is located in the second receiving cavity 13, the second receiving cavity 13 is located above the first receiving cavity 11, and a second cover plate 14 is installed at the opening of the second receiving cavity 13.

[0042] The spray assembly 3 includes a solution tank 31, a discharge pipe 32, and a water pump 33. The solution tank 31 is fixed inside the second receiving cavity 13 and contains a phenolphthalein alcohol solution. One end of the discharge pipe 32 extends into the solution tank 31 and is fixed to the outer wall of the solution tank 31. The end of the discharge pipe 32 away from the solution tank 31 penetrates the outer wall of the measuring instrument body 1. The water pump 33 is installed on the discharge pipe 32, and a nozzle 321 is fixed to the end of the discharge pipe 32 away from the solution tank 31. The water pump 33 transports the solution in the solution tank 31 to the nozzle 321, and the solution is finally sprayed out from the nozzle 321.

[0043] The measuring component 2 includes a probe 21 and a display screen 22. The probe 21 extends from one end of the measuring instrument body 1 out of the outer wall of the measuring instrument body 1. The display screen 22 is mounted on the outer wall of the measuring instrument body 1, which has a first receiving cavity 11.

[0044] A row of first buttons 23 are fixed on the outer wall of the measuring instrument body 1. The first buttons 23 are used to control the entire measuring device. The probe 21 is used to detect the carbonization depth, which can be displayed on the display screen 22.

[0045] Reference Figure 4 and Figure 5 A fixing sleeve 15 is fixed on the outer wall of the measuring instrument body 1, which has a first through hole 111. The center line of the fixing sleeve 15 coincides with the center line of the first through hole 111. A dust cover 151 is fixed to the end of the fixing sleeve 15 away from the outer wall of the measuring instrument body 1. The dust cover 151 is made of rubber material.

[0046] The bottom of the first slider 412 is flush with the bottom of the measuring instrument body 1. A suction pipe 152 is fixed to the bottom of the fixing sleeve 15, and a suction fan 153 is installed on the suction pipe 152. The suction fan 153 is fixed to the outer wall of the measuring instrument body 1. A collection box 5 is installed at the bottom of the measuring instrument body 1. A connecting pipe 51 is fixed to one of the collection boxes 5 near the fixing sleeve 15. A connecting component 6 is provided between the connecting pipe 51 and the suction pipe 152, and the connecting pipe 51 and the suction pipe 152 are fixed by the connecting component 6.

[0047] A base block 16 is fixed to the bottom of the measuring instrument body 1 near the suction pipe 152. A third sliding groove 161 is provided on the base block 16. A third slider 52 is fixed to the top of the collection box 5. The third slider 52 is T-shaped and is slidably connected to the third sliding groove 161. After the third slider 52 slides into the third sliding groove 161, the third slider 52 supports the collection box 5.

[0048] The connecting assembly 6 includes a first connecting plate 61 and a second connecting plate 62. The first connecting plate 61 is fixed to the side of the suction pipe 152 near the connecting pipe 51, and the second connecting plate 62 is fixed to the end of the connecting pipe 51 near the suction pipe 152. The first connecting plate 61 and the second connecting plate 62 are fixed together by bolts and nuts.

[0049] Reference Figure 6 , Figure 7 and Figure 8 The bottom of the first slider 412 is provided with an installation block 7, and the top of the installation block 7 is fixed with a rotating block 71. The bottom of the first slider 412 is provided with an installation groove 413. The rotating block 71 is inserted into the installation groove 413. Both ends of the rotating block 71 are fixed with rotating shafts 711, and the rotating shafts 711 are rotatably connected to the groove wall of the installation groove 413.

[0050] Positioning blocks 72 are installed on both sides of the mounting block 7. A second slider 721 is fixed to the side of the positioning block 72 closest to the mounting block 7. The second slider 721 is a T-shaped slider. A second sliding groove 73 is provided on the mounting block 7, which is set along the length of the mounting block 7. The second slider 721 is slidably connected to the second sliding groove 73. Receiving slots 17 are provided on both sides of the first sliding groove 112 at the bottom of the measuring instrument body 1. When the measuring instrument body 1 is not in use, the mounting block 7 is placed horizontally, located in the first sliding groove 112, and the positioning blocks 72 are located in the receiving slots 17. Placing the mounting block 7 in the first sliding groove 112 and the positioning blocks 72 in the receiving slots 17 reduces the space occupied.

[0051] A limiting block 18 is provided at the bottom of the measuring instrument body 1, and a rotating shaft 181 is fixed at the bottom of the measuring instrument body 1. One end of the limiting block 18 is rotatably connected to the rotating shaft 181, and the limiting block 18 can prevent the mounting block 7 from coming out of the first slide groove 112. When it is necessary to move the mounting block 7, first rotate the limiting block 18 to make the mounting block 7 come out of the first slide groove 112 and make the mounting block 7 vertical, and then move the mounting block 7.

[0052] Each positioning block 72 is equipped with a locking bolt 722. Two locking holes 723 are formed at the bottom of the measuring instrument body 1. One locking bolt 722 passes through one positioning block 72 and is threaded into the locking hole 723. The other locking bolt 722 passes through the other positioning block 72 and is threaded into the other locking hole 723, thereby fixing the positioning block 72 and the mounting block 7. After the locking bolt 722 fixes the positioning block 72 to the measuring instrument body 1, the side of the mounting block 7 closest to the collection box 5 contacts the collection box 5, reducing the possibility of the third slider 52 above the collection box 5 dislodging from the third slide groove 161.

[0053] When using the measuring instrument body 1, the mounting block 7 is set vertically. The electric push rod 44 drives the motor 41 and the mounting plate 411 to move towards the first through hole 111. After moving to the appropriate position, the positioning block 72 is moved upward, so that the top of the positioning block 72 is pressed against the bottom of the measuring instrument body 1. The positioning block 72 is then fixed to the bottom of the measuring instrument body 1 by the locking bolt 722. This increases the stability of the first slider 412, the mounting plate 411, and the motor 41, thereby increasing the stability of the motor 41 when driving the drill rod to drill.

[0054] A limiting groove 74 is formed on the side wall of the mounting block 7. A limiting rod 741 and a spring 742 are installed in the limiting groove 74. A first limiting hole 75 is formed on the rotating block 71, and a second limiting hole 76 is formed in the first slider 412. One end of the spring 742 is fixed to a connecting block 743, and the other end of the spring 742 is fixed to the groove wall of the limiting groove 74. Under the action of the spring 742, the limiting rod 741 can pass through the first limiting hole 75 and be inserted into the second limiting hole 76, thereby increasing the stability of the mounting block 7.

[0055] This application also discloses a method for measuring the carbonation depth of concrete, including the following steps: S1. The electric push rod 44 drives the motor 41 and the drill bit 42 to move towards the first through hole 111. The drill bit 42 extends out of the outer wall of the measuring instrument body 1. The drill bit 42 is located inside the dust cover 151. The end of the dust cover 151 is close to the concrete wall. The motor 41 is started and the drill bit 42 drills a hole in the concrete wall. When drilling, the dust suction fan 153 is started and the dust suction fan 153 transports the dust generated during drilling to the collection box 5. S2. After drilling is completed, aim the nozzle 321 at the borehole and start the water pump 33 to spray the phenolphthalein alcohol solution in the solution tank 31 into the borehole.

[0056] S3. After the concrete in the borehole changes color, the carbonation is measured by the probe on the measuring instrument body 1.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for measuring the carbonation depth of concrete, characterized in that, The instrument includes a measuring instrument body (1), on which a first receiving cavity (11) is provided. A drilling assembly (4) is provided in the first receiving cavity (11). The drilling assembly (4) includes a motor (41) and a drill bit (42). A coupling (43) is installed between the motor (41) and the drill bit (42). A first through hole (111) for the drill bit (42) to extend is provided on the side wall of the measuring instrument body (1). A mounting plate (411) is fixed to the bottom of the motor (41). The mounting plate (411) is slidably connected to the bottom wall of the first receiving cavity (11). A driving component for driving the motor (41) to move toward the first through hole (111) is provided in the first receiving cavity (11). The measuring instrument body (1) has a first through hole (111) and a fixed sleeve (15) is fixed on its outer wall. The center line of the fixed sleeve (15) coincides with the center line of the first through hole (111). A dust cover (151) made of rubber is fixed to one end of the fixed sleeve (15) away from the measuring instrument body (1). A collection box (5) is connected to the bottom of the measuring instrument body (1). A suction pipe (152) is connected between the collection box (5) and the fixed sleeve (15). A suction fan (153) is installed on the suction pipe (152). A rubber sleeve (431) is fitted on the outside of the coupling (43). The outer diameter of the rubber sleeve (431) is equal to the diameter of the first through hole (111). When the drill bit (42) drills, the rubber sleeve (431) is located in the first through hole (111). The bottom of the measuring instrument body (1) is fixed with a base block (16) near the side of the suction pipe (152). The top of the collection box (5) is fixed with a third slider (52) arranged in a T shape. The base block (16) is provided with a third sliding groove (161) for the third slider (52) to slide into. The side of the collection box (5) near the suction pipe (152) is fixed with a connecting pipe (51). A connecting component (6) is provided between the connecting pipe (51) and the suction pipe (152). The suction pipe (152) and the connecting pipe (51) are connected and fixed by the connecting component (6). The bottom of the mounting plate (411) is fixed with a first slider (412), and the bottom wall of the first receiving cavity (11) is provided with a first groove (112) for the first slider (412) to slide. The first slide (112) penetrates the bottom wall of the first receiving cavity (11). The bottom of the first slider (412) is connected to the mounting block (7). Both sides of the mounting block (7) are connected to the positioning blocks (72). Each positioning block (72) is provided with a locking bolt (722). The bottom of the measuring instrument body (1) is provided with a locking hole (723). When the rubber sleeve (431) is inserted into the first through hole (111), the locking bolt (722) penetrates the positioning block (72) and is threadedly connected to the locking hole (723). The mounting block (7) contacts the side of the collection box (5) away from the suction pipe (152). The mounting block (7) has a rotating block (71) fixed at one end near the first slider (412). The bottom of the first slider (412) has an installation groove (413). The rotating block (71) has a rotating shaft (711) fixed on both sides. The rotating shaft (711) is rotatably connected to the groove wall of the installation groove (413). The bottom of the measuring instrument body (1) has a holding groove (17) on both sides of the first sliding groove (112). The positioning block (72) is fixed with a second slider (721) on the side near the mounting block (7). The mounting block (7) has a second groove (73) for the second slider (721) to slide. When the drill bit (42) is not drilling, the mounting block (7) is set horizontally. The mounting block (7) is located in the first groove (112). The positioning block (72) is located in the holding groove (17). The bottom of the measuring instrument body (1) is equipped with a limiting block (18) to prevent the mounting block (7) from coming out of the first groove (112). A limiting groove (74) is provided on the side wall of the mounting block (7). A limiting rod (741) and a spring (742) are provided in the limiting groove (74). A connecting block (743) is fixed to one end of the spring (742). The other end of the spring (742) is fixed to the groove wall of the limiting groove (74). The end of the connecting block (743) away from the spring (742) is fixed to the limiting rod (741). A first limiting hole (75) is provided on the rotating block (71). A second limiting hole (76) is provided on the first slider (412). When the mounting block (7) is set vertically, under the action of the spring (742), the limiting rod (741) passes through the first limiting hole (75) and is inserted into the second limiting hole (76).

2. The concrete carbonation depth measuring device according to claim 1, characterized in that, The measuring instrument body (1) is provided with a second receiving cavity (13), in which a solution tank (31), a liquid outlet pipe (32) and a water pump (33) are provided. One end of the liquid outlet pipe (32) is inserted into the solution tank (31), and the other end of the liquid outlet pipe (32) extends out of the outer wall of the measuring instrument body (1) and is fixed with a nozzle (321). The water pump (33) is installed on the liquid outlet pipe (32).

3. A method for measuring the carbonation depth of concrete, using the concrete carbonation depth measuring device as described in any one of claims 1-2, characterized in that, Includes the following steps: S1. The driving component is an electric push rod (44). The electric push rod (44) drives the motor (41) and the drill bit (42) to move towards the first through hole (111). The drill bit (42) extends out of the outer wall of the measuring instrument body (1). The drill bit (42) is located inside the dust cover (151). The end of the dust cover (151) is close to the concrete wall. The motor (41) is started, and the drill bit (42) drills a hole in the concrete wall. When drilling, the dust extraction fan (153) is started. The dust extraction fan (153) transports the dust generated during drilling to the collection box (5). S2. After drilling is completed, aim the nozzle (321) at the borehole and start the water pump (33) to spray the phenolphthalein alcohol solution in the solution tank (31) into the borehole. S3. After the concrete in the borehole changes color, the carbonation depth is measured by the probe on the measuring instrument body (1).

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