A wall grooving device for repairing building outer wall

Abstract

The application discloses a wall slotting device for building outer wall repairing, relates to the technical field of wall slotting, and comprises a slotting main part, two surface protection parts are installed on the slotting main part, and the surface protection parts are used for reducing the cutting seam edge collapse rate; two surface pressing parts are respectively installed on the two surface protection parts; the surface pressing parts are used for pressing the outer wall surface; two starting protection parts are installed on the slotting main part; two locking parts are respectively installed on the two surface pressing parts; the position of the surface protection part is detected by using an unlocking switch, the locking parts can be used for locking the belt pulley, the staff can ensure that the wheel frame is effectively inshrunk and the unlocking switch is pressed, the pressing spring has sufficient elastic force, and the belt is pressed and adhered to the wall slotting edge; so as to solve the problems that the current slotting cutting machine is inconvenient for preventing the cutting seam edge from collapsing and is inconvenient for prestarting protection of the motor.

Description

Technical Field

[0001] This invention relates to the field of wall grooving technology, specifically a wall grooving device for building exterior wall repair. Background Technology

[0002] In actual building exterior wall crack and seepage repair work, it is necessary to use an exterior wall crack cutting machine to cut a regular V-shaped groove along the crack, remove the powdery, hollow, and loose base layer and the wire mesh layer around the crack, and avoid manual chiseling to avoid creating secondary cracks. After applying a bonding agent to the groove, it is filled and repaired to achieve the purpose of deep repair. Current grooving cutting machines are widely used due to their advantages such as high efficiency in grooving. However, when actually grooving walls, the high-speed rotating grooving wheel is prone to causing chipping on both sides of the groove. It is not convenient to protect the cut edges from chipping without affecting the flexible movement of the grooving cutting machine. The chipped area will affect the quality of the repair. At the same time, traditional grooving cutting machines usually do not have a pre-start protection structure when used by hand. When grooving continuously and quickly, the worker may start the motor directly when the grooving wheel is close to the wall, which will also increase the risk of motor overload.

[0003] Therefore, we propose a wall grooving device for building exterior wall repair. Summary of the Invention

[0004] The purpose of this invention is to provide a wall grooving device for building exterior wall repair, so as to solve the problems mentioned in the background art that current grooving and cutting machines are not convenient for protecting the cut edges from chipping and are not convenient for pre-start protection of the motor.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wall grooving device for building exterior wall repair, comprising a grooving main body, two facing protection components installed on the grooving main body, the facing protection components being used to reduce the chipping rate of the cut; facing pressing components are respectively installed on the two facing protection components; the facing pressing components are used to press the exterior wall surface; two starting protection components are installed on the grooving main body; two locking components are respectively installed on the two facing pressing components; the locking components are used to ensure the cut depth and the pressing force between the facing pressing components and the wall surface; the grooving main body includes: a drive motor, a grooving wheel, and a protective cover, the grooving wheel being installed on the output shaft of the drive motor; the protective cover being fixedly installed at the end of the drive motor; the output shaft of the drive motor passing through the protective cover; the grooving wheel being located inside the protective cover; the protective cover having two through slots for wire harnesses to pass through.

[0006] Preferably, the slotted main body further includes: a baffle, a water inlet pipe, a handle, and a start switch. The baffle is fixedly installed at the bottom of the protective cover; both ends of the baffle are bent; the water inlet pipe is fixedly installed on the protective cover; the water inlet pipe is connected to an external water source; the handle is fixedly installed on the protective cover; the handle is equipped with a start switch; and the start switch is electrically connected to a drive motor.

[0007] Preferably, the slotted main body further includes: an unlocking switch, and two unlocking switches are fixedly installed inside the protective cover; the pressing end of the unlocking switch protrudes from the inner wall of the protective cover.

[0008] Preferably, the protective component includes: a wheel frame, lifting shafts, pressure springs, bearings, and pulleys. The wheel frame is slidably mounted inside the protective cover. Two lifting shafts are fixedly mounted on the wheel frame, and the lifting shafts are slidably inserted into the inner side of the protective cover. The wheel frame has an L-shaped cross-section. Pressure springs are respectively sleeved on the two lifting shafts. One end of each pressure spring is fixedly connected to the inner side of the protective cover, and the other end is fixedly connected to the wheel frame. Two bearings are provided, and the inner rings of the two bearings are respectively fixedly sleeved on the wheel frame. Pulleys are respectively fixedly sleeved on the outer rings of the two bearings. The wheel frame has positioning holes on its side.

[0009] Preferably, the surface protection component further includes: a limiting strip and a bonding belt, with a limiting strip fixedly installed on each of the two pulleys; the bonding belt is driven and sleeved on the two pulleys; the side of the bonding belt slides against the side of the slotted pulley; the inner side of the bonding belt has a groove; and the two limiting strips are located in the groove on the inner side of the bonding belt.

[0010] Preferably, the bonding pressing component includes: a pressing block, roller shafts, and drag-reducing wheels. The pressing block is fixedly installed on the inner side of the wheel frame by bolts. A row of roller shafts is fixedly installed on the bottom of the pressing block. Drag-reducing wheels are rotatably installed on each of the row of roller shafts, and the row of drag-reducing wheels is sleeved on the bottom of the pressing block. The bottom of the row of drag-reducing wheels rolls against the inner bottom surface of the pulley.

[0011] Preferably, the start protection component includes: a protection electromagnet and a positioning shaft, the start switch being electrically connected to the protection electromagnet; the protection electromagnet being fixedly mounted on the protective cover; the positioning shaft being slidably inserted into the protective cover; the positioning shaft being slidably inserted into a positioning hole on the side of the wheel frame; and the protection electromagnet being aligned with the positioning shaft.

[0012] Preferably, the starting protection component further includes: a positioning spring, which is sleeved inside the protective cover; one end of the positioning spring is connected to the back of the positioning shaft, and the other end of the positioning spring is fixedly connected to the protective electromagnet.

[0013] Preferably, the locking component includes: a locking electromagnet and a locking plug; two locking electromagnets are fixedly installed on the pressing block; two locking plugs are slidably inserted into the pressing block, and the ends of the two locking plugs are respectively inserted into the gaps of the limiting strips on both sides; the two locking electromagnets are respectively aligned with the two locking plugs; the two locking electromagnets are electrically connected to the unlocking switch on the same side.

[0014] Preferably, the locking component further includes: locking springs, and two locking springs are provided inside the pressing block; one end of the two locking springs is connected to the locking electromagnet, and the other end of the two locking springs is connected to the locking insert.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention employs two protective components, located on either side of the grooving wheel. These components press against the wall surface at the edges of the groove, reducing edge chipping. The elastic compression of the pressure spring pushes a drag-reducing wheel to roll and adhere to the inner side of the bonding belt, forming support and ensuring the bonding belt remains pressed against the wall surface. The use of a driveable bonding belt does not interfere with the normal movement of the grooving wheel for grooving operations, avoiding excessive friction when the bonding belt adheres to the wall surface and ensuring the flexibility of the structure. An unlocking switch detects the position of the protective components and, in conjunction with a locking mechanism, locks the belt pulley. This ensures that during hand-held cutting operations, the wheel frame effectively retracts to press the unlocking switch and effectively compresses the pressure spring, providing sufficient elasticity to press the bonding belt against the edge of the groove on the wall surface.

[0016] Using a pre-start protection device for the positioning wheel frame ensures that when starting the drive motor, the operator must first maintain a gap between the slotted wheel and the wall before starting. This pre-start protection prevents the operator from starting the drive motor while holding the handle and pressing the slotted wheel against the wall. This can cause the slotted wheel to rub against the wall and slip out of the operator's hand, and can also lead to overload of the drive motor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a wall grooving device for building exterior wall repair according to the present invention; Figure 2 This is a schematic diagram of the bottom structure of a wall grooving device for building exterior wall repair according to the present invention. Figure 3 This is a schematic diagram of the mounting position of the slotted wheel of the present invention; Figure 4 This is a schematic diagram showing the installation position of the protective veneer component of the present invention; Figure 5 This is a schematic diagram showing the installation position of the unlocking switch of the present invention; Figure 6 This is a schematic diagram of the protective coating structure of the present invention; Figure 7 This is a schematic diagram of the bonding pressing component structure of the present invention; Figure 8 This is a cross-sectional view of the internal structure of a wall grooving device for building exterior wall repair according to the present invention. Figure 9 For the present invention Figure 8 Enlarged view of the structure of region A in the middle; Figure 10 This is a cross-sectional view of the mounting position of the unlocking switch of the present invention.

[0018] In the diagram: 1. Grooving main component; 101. Drive motor; 1011. Grooving wheel; 102. Protective cover; 1021. Baffle; 1022. Water pipe; 103. Handle; 1031. Start switch; 104. Unlock switch; 2. Surface protection component; 201. Wheel frame; 202. Lifting slide shaft; 203. Pressure spring; 204. Bearing; 205. Pulley; 2051. Limiting strip; 206. Surface bonding belt; 3. Surface pressing component; 301. Pressing block; 302. Roller shaft; 303. Drag reducing wheel; 4. Start protection component; 401. Protective electromagnet; 402. Positioning shaft; 403. Positioning spring; 5. Locking component; 501. Locking electromagnet; 502. Locking insert; 503. Locking spring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1 to 10 As shown: This invention provides a technical solution: a wall grooving device for exterior wall repair, comprising a grooving main component 1, two facing protection components 2 installed on the grooving main component 1, the facing protection components 2 being used to reduce the chipping rate of the cut; facing pressing components 3 are respectively installed on the two facing protection components 2; the facing pressing components 3 are used to press the exterior wall surface; two starting protection components 4 are installed on the grooving main component 1; two locking components 5 are respectively installed on the two facing pressing components 3; the locking components 5 are used to ensure the cut... The groove depth and the pressing force of the bonding pressing part 3 and the wall surface; the grooving main body 1 includes: a drive motor 101, a grooving wheel 1011 and a protective cover 102. The grooving wheel 1011 is installed on the output shaft of the drive motor 101; the protective cover 102 is fixedly installed at the end of the drive motor 101; the output shaft of the drive motor 101 passes through the protective cover 102; the grooving wheel 1011 is located inside the protective cover 102; the protective cover 102 is provided with two through grooves for the wire harness to pass through.

[0021] The grooving main component 1 also includes: a baffle 1021, a water pipe 1022, a handle 103, and a start switch 1031. The baffle 1021 is fixedly installed at the bottom of the protective cover 102; both ends of the baffle 1021 are bent; the water pipe 1022 is fixedly installed on the protective cover 102; the water pipe 1022 is connected to an external water source; the handle 103 is fixedly installed on the protective cover 102; the handle 103 is equipped with a start switch 1031; the start switch 1031 is electrically connected to the drive motor 101; the surface protection component 2 includes: a wheel frame 201, a lifting slide shaft 202, a pressure spring 203, a bearing 204, and a pulley 205. The wheel frame 201 is slidably installed inside the protective cover 102; the grooving wheel 1011 is a grinding wheel; the wheel frame 201... Two lifting shafts 202 are fixedly installed on the wheel frame 201, and the lifting shafts 202 are slidably inserted into the inner side of the protective cover 102; the wheel frame 201 has an L-shaped cross-section; a pressure spring 203 is sleeved on each of the two lifting shafts 202; one end of each pressure spring 203 is fixedly connected to the inner side of the protective cover 102, and the other end of each pressure spring 203 is fixedly connected to the wheel frame 201; two bearings 204 are provided, and the inner rings of the two bearings 204 are fixedly sleeved on the wheel frame 201; pulleys 205 are fixedly sleeved on the outer rings of the two bearings 204; the wheel frame 201 has positioning holes on its side; the surface protection component 2 also includes: a limiting strip 2051 and a bonding belt 206, and pulleys 205 are fixedly installed on the two pulleys 205. A limiting strip 2051 is provided; a bonding belt 206 is driven and sleeved on two pulleys 205; the side of the bonding belt 206 slides against the side of the slotted wheel 1011; a groove is provided on the inner side of the bonding belt 206; two limiting strips 2051 are located in the groove on the inner side of the bonding belt 206; the bonding pressing component 3 includes: a pressing block 301, roller shafts 302 and drag-reducing wheels 303, the pressing block 301 is fixedly installed on the inner side of the wheel frame 201 by bolts; a row of roller shafts 302 is fixedly installed on the bottom of the pressing block 301; drag-reducing wheels 303 are rotatably installed on the row of roller shafts 302 respectively, and the row of drag-reducing wheels 303 is sleeved on the bottom of the pressing block 301; the bottom of the row of drag-reducing wheels 303 rolls against the inner bottom surface of the pulley 205; two Each protective element 2 is located on both sides of the grooving wheel 1011. It can be used to press and adhere to the wall surface at the edges of the groove, reducing the chipping rate. Through the elastic compression of the pressure spring 203, the friction-reducing wheel 303 is pushed to roll and adhere to the inner side of the adhesion belt 206 for support, ensuring that the adhesion belt 206 is in real time pressed against the wall surface. At the same time, the use of a driveable adhesion belt 206 does not affect the normal movement of the grooving wheel 1011 for grooving work, avoiding excessive frictional resistance when the adhesion belt 206 is in contact with the wall surface. This ensures the flexibility of the structure. The structure is simple to operate, saves more effort for workers, and can effectively improve the grooving quality, especially for exterior walls that may have hollow areas or wire mesh layers, improving the quality of subsequent joint repair.

[0022] The starting protection component 4 includes: a protection electromagnet 401 and a positioning shaft 402. A starting switch 1031 is electrically connected to the protection electromagnet 401. The protection electromagnet 401 is fixedly mounted on the protective cover 102. The positioning shaft 402 is slidably inserted into the protective cover 102. The positioning shaft 402 is slidably inserted into a positioning hole on the side of the wheel frame 201. The protection electromagnet 401 is aligned with the positioning shaft 402. The starting protection component 4 also includes: a positioning spring 403, which is sleeved inside the protective cover 102. One end of the positioning spring 403 is connected to the back of the positioning shaft 402, and the other end is fixedly connected to the protection electromagnet 401. The starting protection component 4 employs a starting protection mechanism. The protective component 4 can be used to position the wheel frame 201, ensuring that when the operator starts the drive motor 101, there is a gap between the slotted wheel 1011 and the wall before starting. This provides pre-start protection and prevents the operator from starting the drive motor 101 while holding the handle 103 and pressing the slotted wheel 1011 against the wall. This would prevent the slotted wheel 1011 from rubbing against the wall and causing a slip-off accident, as well as potential overload of the drive motor 101. In addition, this structure is simple to control, and the operation process is smooth when the operator follows the normal pre-start method for the drive motor 101, improving the standardization of the operator's cutting operation.

[0023] In Embodiment 2, based on Embodiment 1, the slotted main body 1 further includes: an unlocking switch 104, with two unlocking switches 104 fixedly installed inside the protective cover 102; the pressing end of the unlocking switch 104 protrudes from the inner wall of the protective cover 102; the locking component 5 includes: a locking electromagnet 501 and a locking block 502, with two locking electromagnets 501 fixedly installed on the pressing block 301; two locking blocks 502 are slidably inserted into the pressing block 301, and the ends of the two locking blocks 502 are respectively inserted into the limiting on both sides. At the interval of position bar 2051; two locking electromagnets 501 are respectively aligned with two locking blocks 502; the two locking electromagnets 501 are electrically connected to the unlocking switch 104 on the same side; the locking component 5 also includes: locking springs 503, two locking springs 503 are provided inside the pressing block 301; one end of the two locking springs 503 is connected to the locking electromagnet 501, and the other end of the two locking springs 503 is connected to the locking block 502; the unlocking switch 104 is used to detect the position of the surface protection component 2, and cooperate with the locking component. 5 can be used to lock the pulley 205, ensuring that when the operator is hand-operating the cutting, the wheel frame 201 can effectively retract and squeeze the unlock switch 104, and the pressure spring 203 can be effectively compressed. This ensures that the pressure spring 203 has sufficient elastic force to press the belt 206 against the edge of the wall groove. The structure is simple to control and can further ensure the cutting quality of the groove. It avoids the problem that the belt 206 cannot effectively adhere to the edge of the wall groove for anti-chipping protection due to insufficient pressure from the operator, thus reducing the secondary rework and trimming rate. When the wheel frame 201 is not effectively pressed, that is, when the adhesion pressure of the belt 206 against the wall is insufficient, the wheel frame 201 cannot press the unlock switch 104. At this time, the locking spring 503 is in a state of elastic compression of the locking block 502, which is inserted into the interval of the limit strip 2051 for locking. The bearing 204 cannot rotate, and the belt 206 cannot effectively transmit power. Its frictional resistance with the wall is extremely high, making it difficult for the operator to cut and move.

[0024] The working principle of this embodiment is as follows: First, water is supplied through the external water source connected to the water pipe 1022 for cutting, cooling, and dust removal. The worker holds the handle 103 and places the fitting belt 206 close to the wall. At this time, there is a gap between the grooving wheel 1011 and the wall. The positioning shaft 402 is positioned within the wheel frame 201 under the compression of the positioning spring 403. The worker cannot directly press down on the grooving wheel 1011; instead, the worker needs to press the start switch 1031 to start the drive motor 101, which then drives the grooving wheel. When wheel 1011 rotates at high speed for pre-start, the protective electromagnet 401 is activated, attracting the positioning shaft 402 and compressing the positioning spring 403. The positioning shaft 402 then moves backward, no longer positioning the wheel frame 201. Only then can the operator press down on handle 103, causing the protective cover 102 and the slotted wheel 1011 to move downward and cut into the wall. As handle 103 is pressed, the slotted wheel 1011 gradually penetrates deeper into the wall, conforming to the belt 206 and pressing against the wall. The wheel frame 201 can then move upward to compress the pressure spring. Spring 203 keeps the belt 206 in elastic contact with the wall until the spring 203 is fully compressed. At this time, the wheel frame 201 also moves upward to press the unlocking switch 104. Only then will the unlocking switch 104 control the locking electromagnet 501 to magnetically attract the locking block 502, compressing the locking spring 503. At this time, the locking block 502 is pulled out from the limit bar 2051, realizing the release of the locking state of the bearing 204. Only then can the operator move the slotted wheel 1011 normally, moving it along the path of the crack in the wall. During the moving groove cutting process, the drag-reducing wheel 303 rolls and adheres to the inner side of the bonding belt 206, keeping the bonding belt 206 flat and adhered to the wall. With the help of two bearings 204, the bonding belt 206 can be driven on the wall. The drag-reducing wheel 303 and bearings 204 can reduce the drag, reduce the resistance of the bonding belt 206 on the wall, and keep the bonding belt 206 effectively pressing against the edge of the wall cut while not affecting the flexible displacement of the drag-reducing wheel 303 to adjust the cutting angle.

[0025] After completing a grooving cut, once the grooving wheel 1011 is separated from the wall, if the cutting work is complete and the start switch 1031 is no longer pressed, the protective electromagnet 401 will also be de-energized. Under the pressure of the compression spring 203, the wheel frame 201 can automatically extend. When the positioning hole on the wheel frame 201 is aligned with the positioning shaft 402 again, under the pressure of the positioning spring 403, the positioning shaft 402 can be inserted into the positioning hole on the wheel frame 201 again for positioning.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wall grooving device for exterior wall repair, comprising a grooving main body (1), wherein two surface protection components (2) are installed on the grooving main body (1), characterized in that: The surface protection component (2) is used to reduce the chipping rate of the cut joint; a surface pressing component (3) is installed on each of the two surface protection components (2); the surface pressing component (3) is used to press the exterior wall surface; Two start-up protection components (4) are installed on the slotted main body (1); Two locking elements (5) are respectively installed on the two surface pressing parts (3); The slotted main component (1) includes: a drive motor (101), a slotting wheel (1011), and a protective cover (102). The slotting wheel (1011) is mounted on the output shaft of the drive motor (101); the protective cover (102) is fixedly mounted on the end of the drive motor (101); the output shaft of the drive motor (101) passes through the protective cover (102); and the slotting wheel (1011) is located inside the protective cover (102).

2. The wall grooving device for building exterior wall repair according to claim 1, characterized in that: The slotted main component (1) further includes: a baffle (1021), a water inlet pipe (1022), a handle (103), and a start switch (1031). The baffle (1021) is fixedly installed at the bottom of the protective cover (102); the water inlet pipe (1022) is fixedly installed on the protective cover (102); the handle (103) is fixedly installed on the protective cover (102); the handle (103) is provided with a start switch (1031); the start switch (1031) is electrically connected to the drive motor (101).

3. A wall grooving device for exterior wall repair according to claim 2, characterized in that: The slotted main body (1) also includes: unlocking switch (104), and two unlocking switches (104) are fixedly installed on the inner side of the protective cover (102).

4. A wall grooving device for building exterior wall repair according to claim 3, characterized in that: The protective component (2) includes: a wheel frame (201), a lifting slide shaft (202), a pressure spring (203), a bearing (204), and a pulley (205). The wheel frame (201) is slidably mounted inside the protective cover (102). Two lifting slide shafts (202) are fixedly mounted on the wheel frame (201), and the lifting slide shafts (202) are slidably inserted into the inner side of the protective cover (102). Each of the two lifting slide shafts (202) is fitted with a pulley. Compression springs (203); one end of each of the two compression springs (203) is fixedly connected to the inside of the protective cover (102), and the other end of each of the two compression springs (203) is fixedly connected to the wheel frame (201); two bearings (204) are provided, and the inner rings of the two bearings (204) are respectively fixedly sleeved on the wheel frame (201); the outer rings of the two bearings (204) are respectively fixedly sleeved with pulleys (205); the wheel frame (201) has positioning holes on its side.

5. A wall grooving device for exterior wall repair according to claim 4, characterized in that: The surface protection component (2) further includes: a limiting strip (2051) and a bonding belt (206). A limiting strip (2051) is fixedly installed on each of the two pulleys (205). The bonding belt (206) is driven and sleeved on the two pulleys (205). The side of the bonding belt (206) slides and fits against the side of the slotted wheel (1011). The inner side of the bonding belt (206) is provided with a groove. The two limiting strips (2051) are located in the groove on the inner side of the bonding belt (206).

6. A wall grooving device for exterior wall repair according to claim 5, characterized in that: The surface pressing component (3) includes: pressing block (301), roller shaft (302) and drag-reducing wheel (303). The pressing block (301) is fixedly installed on the inner side of the wheel frame (201) by bolts. A row of roller shafts (302) is fixedly installed on the bottom of the pressing block (301). A drag-reducing wheel (303) is rotatably installed on a row of roller shafts (302), and a row of drag-reducing wheels (303) is sleeved on the bottom of the pressing block (301). The bottom of a row of drag-reducing wheels (303) rolls against the inner bottom surface of the pulley (205).

7. A wall grooving device for exterior wall repair according to claim 4, characterized in that: The start-up protection component (4) includes a protection electromagnet (401) and a positioning shaft (402). The start-up switch (1031) is electrically connected to the protection electromagnet (401). The protection electromagnet (401) is fixedly installed on the protective cover (102). The positioning shaft (402) is slidably inserted into the protective cover (102). The positioning shaft (402) is slidably inserted into the positioning hole on the side of the wheel frame (201). The protection electromagnet (401) is aligned with the positioning shaft (402).

8. A wall grooving device for exterior wall repair according to claim 7, characterized in that: The starting protection component (4) further includes: a positioning spring (403), which is sleeved inside the protective cover (102); one end of the positioning spring (403) is connected to the back of the positioning shaft (402), and the other end of the positioning spring (403) is fixedly connected to the protective electromagnet (401).

9. A wall grooving device for building exterior wall repair according to claim 6, characterized in that: The locking component (5) includes a locking electromagnet (501) and a locking plug (502). Two locking electromagnets (501) are fixedly installed on the pressing block (301). Two locking plugs (502) are slidably inserted into the pressing block (301). The ends of the two locking plugs (502) are respectively inserted into the gaps between the limiting strips (2051) on both sides. The two locking electromagnets (501) are respectively aligned with the two locking plugs (502). The two locking electromagnets (501) are electrically connected to the unlocking switch (104) on the same side.

10. A wall grooving device for exterior wall repair according to claim 9, characterized in that: The locking component (5) further includes: a locking spring (503), and two locking springs (503) are provided on the inner side of the pressing block (301); one end of the two locking springs (503) is connected to the locking electromagnet (501), and the other end of the two locking springs (503) is connected to the locking insert (502).

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