A fine leveling treatment device for building wall surface

Abstract

The application discloses a building wall fine leveling treatment device, and belongs to the technical field of building engineering. In order to solve the problem that the wall surface is rough and has many uneven places, so that the building wall leveling device is difficult to move and polish along the wall surface, the polishing is not continuous, and the polishing quality and efficiency are reduced, a motor and a handle are fixedly installed on the outer walls on the two sides of the middle part of the motor, a clamping rotating shaft is fixedly installed on the output end of the front end of the motor, a polishing disc is clamped and installed at the front end of the clamping rotating shaft, an outer cover is sleeved on the outer periphery of the clamping rotating shaft, an anti-abrasion frame is embedded and installed in the inner cavity of the outer cover, and a collecting cover is fixedly installed on the bottom surface of the outer cover. The operation process and the pushing force when the wall leveling treatment device is used to polish the building wall by an operator are utilized, the collection and leakage prevention effect of the outer cover on the wall polishing dust is ensured, and the use adaptability of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, specifically to a device for fine leveling of building walls. Background Technology

[0002] Building wall surfaces refer to the exterior finish of a wall, and are divided into interior and exterior wall surfaces. Before applying putty to interior walls, to ensure a smooth surface, it is usually necessary to sand the raised areas back and forth to prevent unevenness after applying putty. Sanding typically involves using a motor-driven sanding disc to rapidly rotate across the wall surface, thus achieving a smooth and even finish.

[0003] Document CN218284855U discloses a dust-collecting type building wall leveling device, including a sander housing and a dust collection pipe. A connecting assembly head is located at the bottom of the sander housing, and connecting components are provided at both the front and rear ends of the connecting assembly head. The connecting components include an upper clamp, a fixing frame, a connecting pipe, and a main pipe. The dust collection pipe is threaded to the left side of the main pipe. This dust-collecting type building wall leveling device, through the use of a high-suction fan, allows the dust generated by the sander during wall leveling operations to be absorbed and drawn into the non-woven fabric filter layer inside the vacuum cleaner. This filter layer purifies the dust, significantly reducing the amount of dust released into the air and preventing operators from inhaling large amounts of dust while leveling walls, thus protecting the operator's health.

[0004] The aforementioned prior art wall leveling device collects sanding dust within an outer cover and a vacuum cleaner, preventing large amounts of dust from scattering in the air. However, during the wall leveling process, the wall surface is rough with many uneven areas. To prevent dust leakage, the inner side of the outer cover needs to be as close to the wall as possible. This makes it difficult for the wall leveling device to move and sand along the wall. Instead, it can only sand one area and then move to another to continue leveling and sanding. This method requires manual searching for uneven areas and sanding one by one, resulting in low efficiency. Furthermore, this piecemeal sanding method leads to inconsistent sanding, reduces sanding quality, and is inconvenient to use.

[0005] To address the above issues, a device for fine leveling of building walls is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a fine-grained wall surface leveling device. Using this device solves the problem mentioned above: due to the rough surface of the wall and numerous uneven areas, to prevent dust leakage, the inner side of the outer cover needs to be as close to the wall as possible. This makes it difficult for the wall surface leveling device to move and grind along the wall surface. Instead, it can only grind one area and then lift and move the device to another location to continue leveling and grinding. This leveling and grinding method not only requires manual searching for uneven areas on the wall surface and grinding each area individually, resulting in low grinding efficiency, but also leads to inconsistent grinding and reduced grinding quality.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fine leveling treatment device for building walls, comprising a motor and handles respectively fixedly installed on the outer walls of the two sides of the middle part of the motor. A snap-fit ​​shaft is fixedly installed on the output end of the front end of the motor, and a grinding disc is snap-fitted onto the front end of the snap-fit ​​shaft. An outer cover is sleeved around the outer periphery of the snap-fit ​​shaft, and an anti-wear frame is embedded in the inner cavity of the outer cover. A collection wide cover is fixedly installed on the bottom surface of the outer cover, and a long hose is fixedly installed at the middle of the bottom surface of the collection wide cover. The other end of the long hose is connected to a vacuum cleaner.

[0008] Furthermore, a T-shaped groove is provided on the middle outer wall of the front end of the motor, and an annular groove is provided on the outer peripheral wall of the front end of the motor. The annular groove and the T-shaped groove are connected by a pair of connecting sliding holes, and the snap-fit ​​rotating shaft is movably installed in the T-shaped groove.

[0009] Furthermore, the snap-fit ​​shaft includes a shaft body and a snap-fit ​​component installed in the inner cavity of the shaft body. An L-shaped groove is provided on the outer wall of the tail end of the outer periphery of the shaft body, and the inner end of the L-shaped groove is located at the front end of the shaft body. External sliding holes are provided on the outer walls of both ends of the outer periphery of the front end of the shaft body, and the external sliding holes are respectively connected to the front end of the L-shaped groove. Receiving grooves are provided on the outer walls of both ends of the outer periphery of the front end of the shaft body, and a semi-circular snap-fit ​​block is elastically slidably installed at the inner opening of the receiving groove through a connecting spring.

[0010] Furthermore, the snap-fit ​​component includes a transverse slide rod and a push protrusion fixedly installed on the outer peripheral wall of the tail end of the transverse slide rod. A ball bearing is installed on the outer wall of the front end of the push protrusion. The transverse slide rod is elastically slidably installed in the L-shaped slide groove by a first spring. Snap-fit ​​rods are slidably installed in the outer through-holes. Double through grooves are provided on the outer walls of both ends of the front end of the transverse slide rod. Inclined slide grooves are provided on the inner walls of both sides of the inner cavity of the double through grooves. Push sliding shafts are fixedly installed on the outer walls of both sides of the lower end of the snap-fit ​​rod, and the push sliding shafts are slidably installed in the inclined slide grooves.

[0011] Furthermore, the grinding disc includes a disc body and a grinding disc fixedly installed on the outer wall of the front end of the disc body. A circular slot is provided on the outer wall of the middle part of the back of the disc body. Semi-circular slots are provided on the inner walls of both ends of the inner cavity of the circular slot. Engaging inner grooves are provided on the top and bottom surfaces of the inner cavity of the circular slot.

[0012] Furthermore, a collection groove is provided on the middle outer wall of the front end of the outer cover, a through hole is provided in the middle of the outer cover, and the through hole and the collection groove are connected. Four L-shaped through holes are evenly provided on the inner wall of the through hole. Four T-slots are evenly provided on the outer peripheral wall of the front end of the outer cover, and the T-slots are respectively connected to the outer ends of the corresponding L-shaped through holes. Connecting mesh holes are provided at both ends of the bottom surface of the lower end of the outer cover, and the connecting mesh holes are respectively connected to the collection groove.

[0013] Furthermore, an embedded semi-circular groove is provided on the rear inner wall of the L-shaped through hole cavity.

[0014] Furthermore, the wear-resistant frame includes a connecting ring and four L-shaped push rods evenly fixed on the outer wall of the connecting ring. The outer ends of the L-shaped push rods are each equipped with casters. A connecting ring is fixedly installed on the middle outer wall of the rear side of the connecting ring. The tail end of the connecting ring is elastically slidably installed in the ring groove via a return spring. The L-shaped push rods are inserted through the rear side of the inner cavity of the L-shaped through hole. The connecting ring is elastically installed through the through hole via several return springs. Limiting sliders are fixedly installed on the outer walls of both ends of the tail end of the connecting ring. A pushing collar is provided in the inner cavity of the T-shaped rotating groove, and the tail ends of the limiting sliders are fixedly installed on the outer wall of the front end of the pushing collar. The limiting sliders are slidably installed in the connecting sliding hole.

[0015] Furthermore, the L-shaped push rod includes a horizontal straight rod and a protruding connecting block fixedly installed on the outer wall of the outer end of the horizontal straight rod. A semi-circular protrusion is fixedly installed on the rear outer wall of the middle part of the horizontal straight rod, and the semi-circular protrusion is embedded in the embedded semi-circular groove.

[0016] Furthermore, a dust collection trough is provided on the top surface of the collection hood, and a three-way compensation trough is provided at the front middle of the upper end of the collection hood. The dust collection trough is connected to the three-way compensation trough, and the connecting mesh is connected to the dust collection trough.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: When the outer cover, following the motor and the grinding disc, touches a protruding obstacle on the wall during movement, the operator continues to move the motor. The motor will then drive the entire anti-wear frame to move relative to the outer cover. The outer cover will then be unable to move further due to the obstruction of the protruding obstacle on the wall. During this process, the rebound spring will be partially stretched and partially compressed, giving the outer cover a restoring elastic force. The semi-circular protrusion will also move from the semi-circular groove into the L-shaped through hole. Under the push of the semi-circular protrusion, the outer cover will move rearward relative to the anti-wear frame. By extending the casters beyond the T-slots, the entire device can directly overcome protruding obstacles on the wall to continue the leveling and sanding operation. It cleverly utilizes the operator's operation process and the pushing force provided when using the wall leveling device to sand the building wall, making the operation seamless. This not only ensures the outer cover's effectiveness in collecting and preventing leakage of sanding dust, but also improves the device's adaptability. The operator can directly overcome protruding obstacles on the wall without lifting the device, resulting in a continuous leveling process and improved sanding efficiency and quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the connection between the motor, the snap-fit ​​shaft, the outer cover, and the wear-resistant frame of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram showing the connection between the motor, grinding disc, and outer cover of the present invention.

[0021] Figure 4 This is a schematic diagram showing the state of the locking components before and after the outer cover of the present invention is squeezed and pushed.

[0022] Figure 5 This is a schematic diagram showing the state of the outer cover of the present invention before and after encountering an obstacle;

[0023] Figure 6 This is a schematic diagram of the back planar structure of the outer cover and anti-wear frame of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the motor of the present invention;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the outer cover of the present invention;

[0026] Figure 9 This is a three-dimensional structural diagram of the back of the grinding disc of the present invention;

[0027] Figure 10 For the present invention Figure 4 Enlarged view of point A;

[0028] Figure 11 This is a three-dimensional structural diagram of the tail portion of the anti-wear frame of the present invention;

[0029] Figure 12 This is a three-dimensional structural diagram of the front end of the anti-wear frame of the present invention;

[0030] Figure 13 This is a schematic cross-sectional view of the rotating shaft body and the snap-fit ​​component of the present invention.

[0031] Figure 14 This is a schematic diagram of the three-dimensional structure of the collection hood of the present invention.

[0032] In the diagram: 1. Motor; 11. T-shaped groove; 12. Circular groove; 13. Connecting sliding hole; 2. Handle; 3. Snap-fit ​​shaft; 31. Shaft body; 311. L-shaped groove; 312. External sliding hole; 313. Receiving groove; 314. Semi-circular locking block; 315. Connecting spring; 32. Snap-fit ​​component; 321. Transverse sliding rod; 322. First spring; 323. Pushing protrusion; 324. Ball bearing; 325. Double-through groove; 326. Inclined groove; 327. Snap-fit ​​rod; 328. Pushing sliding shaft; 4. Grinding disc; 41. Disc body; 411. Circular slot; 412. Semi-circular slot; 413. Snap-fit ​​inner groove; 42. Grinding disc; 5. Outer cover; 51. Collection round groove; 52. Through-hole; 53. L-shaped through hole; 531. Embedded semi-circular groove; 54. T-shaped groove; 55. Connecting mesh; 6. Anti-wear frame; 61. Connecting ring; 62. L-shaped push rod; 621. Horizontal straight rod; 622. Protruding connecting block; 623. Semi-circular protrusion; 63. Universal wheel; 64. Insertion ring; 65. Rebound spring; 66. Restricting slider; 67. Push collar; 68. Return spring; 7. Collection wide cover; 71. Dust collection groove; 72. T-shaped compensation groove; 8. Long hose; 9. Vacuum cleaner. Detailed Implementation

[0033] 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.

[0034] To address the technical problem of rough, uneven wall surfaces, which makes it difficult for wall leveling devices to move and sand along the wall, resulting in inconsistent sanding and reduced sanding quality and efficiency, such as... Figures 1-12 and Figure 14 As shown, the following preferred technical solutions are provided:

[0035] A fine-leveling device for building walls includes a motor 1 and handles 2 fixedly installed on the outer walls of the two sides of the middle part of the motor 1. A snap-fit ​​shaft 3 is fixedly installed on the output end of the front end of the motor 1, and a grinding disc 4 is snap-fitted to the front end of the snap-fit ​​shaft 3. An outer cover 5 is sleeved on the outer periphery of the snap-fit ​​shaft 3, and an anti-wear frame 6 is embedded in the inner cavity of the outer cover 5. A collection wide cover 7 is fixedly installed on the bottom surface of the outer cover 5. A long hose 8 is fixedly installed at the middle of the bottom surface of the collection wide cover 7, and a vacuum cleaner 9 is connected to the other end of the long hose 8.

[0036] A T-shaped groove 11 is provided on the middle outer wall of the front end of the motor 1, and an annular groove 12 is provided on the outer peripheral wall of the front end of the motor 1. The annular groove 12 and the T-shaped groove 11 are connected by a pair of connecting sliding holes 13. The snap-fit ​​rotating shaft 3 is movably installed in the T-shaped groove 11.

[0037] The outer cover 5 is circular in shape. A collection groove 51 is provided on the outer wall of the middle part of the front end of the outer cover 5. A through hole 52 is provided in the middle of the outer cover 5, and the through hole 52 and the collection groove 51 are connected. Four L-shaped through holes 53 are evenly provided on the inner wall of the inner cavity of the through hole 52, and the outer ends of the L-shaped through holes 53 are respectively located in the outer periphery of the outer cover 5. Four three-way grooves 54 are evenly provided on the outer periphery of the front end of the outer cover 5, and the three-way grooves 54 are respectively connected to the outer ends of the L-shaped through holes 53. A connecting mesh hole 55 is provided at both ends of the bottom surface of the lower end of the outer cover 5, and the connecting mesh hole 55 is connected to the collection groove 51. A semi-circular groove 531 is provided on the rear inner wall of the inner cavity of the L-shaped through hole 53.

[0038] The anti-wear frame 6 includes a connecting ring 61 and four L-shaped push rods 62 evenly fixed on the outer wall of the connecting ring 61. A universal wheel 63 is mounted on the outer end of each L-shaped push rod 62, with the front end of the universal wheel 63 slightly protruding from the front surface of the outer cover 5. A plug-in ring 64 is fixedly mounted on the middle outer wall of the rear side of the connecting ring 61. The front end of the snap-fit ​​shaft 3 is respectively positioned to pass through the connecting ring 61 and the plug-in ring 64. The tail end of the plug-in ring 64 is elastically slidably mounted in the ring groove 12 via a return spring 68. The L-shaped push rods 62 are inserted through the rear side of the inner cavity of the L-shaped through hole 53. The plug-in ring 64 is elastically inserted through the through hole 52 via several springs 65, which are evenly distributed within the through hole 52. Limiting sliders 66 are fixedly mounted on the outer walls of both ends of the tail end of the plug-in ring 64, and the inner cavity of the T-shaped rotating groove 11... A push collar 67 is provided, and the tail end of the limiting slider 66 is fixedly installed on the outer wall of the front end of the push collar 67. The limiting slider 66 is slidably disposed in the connecting slide hole 13. The push collar 67 is sleeved on the outer circumference of the snap-fit ​​rotating shaft 3. The push protrusion 323 is disposed at the rear side of the push collar 67. When the outer cover 5 and the anti-wear frame 6 move rearward relative to the grinding disc 4, the push collar 67 can drive the push protrusion 323 to move rearward together, thereby realizing the snap-fit ​​fixing effect of the snap-fit ​​part 32 on the grinding disc 4. The L-shaped push rod 62 includes a horizontal straight rod 621 and a protruding connecting block 622 fixedly installed on the outer wall of the front end of the horizontal straight rod 621. A semi-circular protrusion 623 is fixedly installed on the rear outer wall of the middle part of the horizontal straight rod 621, and the semi-circular protrusion 623 is embedded in the embedded semi-circular groove 531. The universal wheels 63 are respectively installed on the protruding connecting block 622.

[0039] During the sanding process of the sanding disc 4 on the building wall, the operator can push the motor 1 and the sanding disc 4 along the building wall by holding the handle 2 to move and level the sanding. The front end of the universal wheel 63 is set with a slightly convex front surface of the outer cover 5, so that the universal wheel 63 can roll on the wall surface and the inner side of the outer cover 5 does not contact the wall surface. While ensuring that the gap between the outer cover 5 and the wall is small, the outer cover 5 can also move with the motor 1 and the sanding disc 4 on the rough wall surface without wear. This ensures the dust collection and leakage prevention effect, while also achieving the effect of moving and leveling the sanding disc 4 on the wall surface. The sanding efficiency is high, the leveling method is continuous, and the leveling and sanding quality of the wall surface is improved.

[0040] The diameter of the through hole 52 is set larger than the diameter of the insertion ring 64. When the outer cover 5, following the motor 1 and the grinding disc 4, touches a protruding obstacle on the wall during movement, the operator continues to move the motor 1. The motor 1 will then drive the anti-wear frame 6 to move relative to the outer cover 5. The outer cover 5 will then be unable to move further due to the obstruction of the protruding obstacle on the wall. During this process, the return spring 65 will be partially stretched and partially compressed, giving the outer cover 5 a restoring elastic force. The semi-circular protrusion 623 will also move from the semi-circular groove 531 into the L-shaped through hole 53. Under the push of the semi-circular protrusion 623, the outer cover 5 will... By moving the anti-wear frame 6 to the rear, the caster wheel 63 protrudes further out of the three-way groove 54, allowing the entire device to directly overcome protruding obstacles on the wall and continue the wall leveling and sanding operation. This cleverly utilizes the operator's operation process and the pushing force provided when using the wall leveling device to sand the building wall, making the operation seamless. It not only ensures the outer cover 5's effect of collecting and preventing leakage of sanding dust, but also improves the device's adaptability. The operator can directly overcome protruding obstacles on the wall without lifting the device, and the leveling method is continuous, improving sanding efficiency and quality.

[0041] The top surface of the wide collection hood 7 is provided with a dust collection trough 71, and the front middle of the upper end of the wide collection hood 7 is provided with a three-way compensation trough 72. The dust collection trough 71 and the three-way compensation trough 72 are connected. The connecting mesh 55 is connected to the dust collection trough 71. When the grinding disc 4 is grinding the building wall, the dust will be collected in the collection trough 51 by the outer cover 5. By starting the vacuum cleaner 9, the vacuum cleaner 9 will continuously suck the dust into the vacuum cleaner 9 through the long hose 8, the wide collection hood 7 and the connecting mesh 55, thereby realizing the collection of wall grinding dust and preventing the dust from being dispersed in the air and causing harm to the human body.

[0042] To address the technical issue of how to facilitate the operator's disassembly and assembly of the grinding disc 4, such as... Figures 1-4 , Figures 6-9 and Figures 11-13 As shown, the following preferred technical solutions are provided:

[0043] The snap-fit ​​shaft 3 includes a shaft body 31 and a snap-fit ​​component 32 installed in the inner cavity of the shaft body 31. An L-shaped groove 311 is provided on the outer wall of the tail end of the shaft body 31, with the inner end of the L-shaped groove 311 located at the front end of the shaft body 31. External sliding holes 312 are respectively provided on the outer walls of both ends of the outer periphery of the front end of the shaft body 31, and the external sliding holes 312 are respectively connected to the front end of the L-shaped groove 311. Receiving grooves 313 are respectively provided on the outer walls of both ends of the outer periphery of the front end of the shaft body 31, and a semi-circular locking block 314 is elastically slidably installed at the inner opening of the receiving groove 313 via a connecting spring 315. The snap-fit ​​component 32 includes a transverse slide rod 321 and a pushing protrusion 323 fixedly installed on the outer wall of the tail end of the transverse slide rod 321, and a push protrusion 323 is installed on the outer wall of the front end of the pushing protrusion 323. The device includes ball bearings 324, a transverse slide rod 321 that is elastically slidably mounted in an L-shaped slide groove 311 via a first spring 322, and snap-fit ​​rods 327 that are slidably mounted in external slide holes 312. Double-through grooves 325 are provided on the outer walls of both ends of the front end of the transverse slide rod 321, and inclined slide grooves 326 are provided on the inner walls of both sides of the inner cavity of the double-through grooves 325. Pushing shafts 328 are fixedly mounted on the outer walls of both sides of the lower end of the snap-fit ​​rods 327, and are slidably mounted in the inclined slide grooves 326. By incorporating ball bearings 324, when the snap-fit ​​rotating shaft 3 rotates rapidly relative to the anti-wear frame 6, the device can reduce friction and wear between the pushing protrusion 323 and the outer wall of the tail of the anti-wear frame 6, while ensuring that the anti-wear frame 6 exerts a pushing force on the pushing protrusion 323, thus extending the service life of the device.

[0044] The grinding disc 4 includes a disc body 41 and a grinding disc 42 fixedly mounted on the outer wall of the front end of the disc body 41. A circular slot 411 is provided on the outer wall of the middle part of the back of the disc body 41. Semicircular grooves 412 are respectively provided on the inner walls of both ends of the inner cavity of the circular slot 411. Engaging inner grooves 413 are respectively provided on the top and bottom surfaces of the inner cavity of the circular slot 411. By providing semicircular grooves 412, when the operator needs to install the grinding disc 4 on the front end of the engaging rotating shaft 3, it can be... After the semicircular locking blocks 314 are aligned with the positions of the semicircular locking slots 412, the front end of the locking shaft 3 is inserted into the circular slot 411. The semicircular locking blocks 314 will automatically lock into the semicircular locking slots 412 under the elastic force of the connecting spring 315, thereby pre-fixing the grinding disc 4 to the front end of the locking shaft 3. While ensuring that the locking rod 327 can be locked into the locking inner groove 413, it also makes it convenient for the operator to directly remove and install the grinding disc 4, making it convenient to use.

[0045] When the grinding disc 4, outer cover 5, and anti-abrasion frame 6 are not subjected to external force, the grinding disc 4 is embedded in the inner cavity of the outer cover 5. After the operator installs the grinding disc 4 at the front end of the locking shaft 3, when it is necessary to grind the wall surface, they can hold the handle 2 and then press the grinding disc 4 firmly onto the wall surface to be treated. During this process, the outer cover 5 and anti-abrasion frame 6 will move backward relative to the grinding disc 4. The tail end of the anti-abrasion frame 6 will push the pushing protrusion 323 to move backward together. The pushing protrusion 323 will then drive the transverse sliding rod 321 to move backward together. Under the constraint between the pushing sliding shaft 328 and the inclined sliding groove 326, the locking rod 327 can be driven to slide outward along the outer through sliding hole 312, so that the outer end of the locking rod 327... By inserting the clip into the inner groove 413, the grinding disc 4 can be automatically clipped and fixed at the front end of the clipping shaft 3, ensuring that the clipping shaft 3 can drive the grinding disc 4 to rotate quickly for grinding. After grinding, the operator removes the grinding disc 4 from the wall. Under the action of elasticity, the clip 32, the outer cover 5, and the anti-abrasion frame 6 will automatically reset, and the operator can directly remove, store, and replace the grinding disc 4. It cleverly utilizes the operator's operation process and the pushing force when using the wall leveling device to grind the building wall. Not only is the operation seamless, but it also eliminates the need for additional operation steps to complete the clipping and disengagement of the grinding disc 4. This facilitates the disassembly, assembly, and storage of the grinding disc 4, resulting in high efficiency and a good user experience.

[0046] 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.

[0047] 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 device for fine leveling of building walls, comprising a motor (1) and handles (2) respectively fixedly installed on the outer walls of both sides of the middle part of the motor (1), characterized in that: A snap-fit ​​shaft (3) is fixedly installed on the output end of the motor (1), and a grinding disc (4) is snap-fitted on the front end of the snap-fit ​​shaft (3). An outer cover (5) is sleeved on the outer periphery of the snap-fit ​​shaft (3), and an anti-wear frame (6) is embedded in the inner cavity of the outer cover (5). A collection wide cover (7) is fixedly installed on the bottom surface of the outer cover (5), and a long hose (8) is fixedly installed in the middle of the bottom surface of the collection wide cover (7). The other end of the long hose (8) is connected to a vacuum cleaner (9). A T-shaped groove (11) is provided on the middle outer wall of the front end of the motor (1), and an annular groove (12) is provided on the outer peripheral wall of the front end of the motor (1). The annular groove (12) and the T-shaped groove (11) are connected by a pair of connecting sliding holes (13). The snap-fit ​​rotating shaft (3) is installed in the T-shaped groove (11). The snap-fit ​​shaft (3) includes a shaft body (31) and a snap-fit ​​member (32) installed in the inner cavity of the shaft body (31); An L-shaped groove (311) is provided on the outer wall of the tail end of the rotating shaft body (31), and the inner end of the L-shaped groove (311) is located at the front end of the rotating shaft body (31). External sliding holes (312) are provided on the outer walls of the two ends of the outer periphery of the front end of the rotating shaft body (31), and the external sliding holes (312) are connected to the front end of the L-shaped groove (311). Receiving grooves (313) are provided on the outer walls of the two ends of the outer periphery of the front end of the rotating shaft body (31), and a semi-circular locking block (314) is elastically slidably installed at the inner cavity opening of the receiving groove (313) through a connecting spring (315). The snap-fit ​​component (32) includes a transverse slide rod (321) and a push protrusion (323) fixedly installed on the outer wall of the outer periphery of the tail end of the transverse slide rod (321). A ball bearing (324) is installed on the outer wall of the front end of the push protrusion (323). The transverse slide rod (321) is elastically slidably installed in the L-shaped slide groove (311) by a first spring (322). A snap-fit ​​rod (327) is slidably installed in the outer through hole (312). Double through grooves (325) are respectively provided on the outer walls of the two ends of the front end of the transverse slide rod (321). Inclined slide grooves (326) are respectively provided on the inner walls of the two sides of the inner cavity of the double through grooves (325). Push sliding shafts (328) are fixedly installed on the outer walls of the two sides of the lower end of the snap-fit ​​rod (327). The push sliding shafts (328) are slidably installed in the inclined slide grooves (326).

2. The device for fine leveling of building walls according to claim 1, characterized in that: The grinding disc (4) includes a disc body (41) and a grinding disc (42) fixedly installed on the outer wall of the front end of the disc body (41); A circular slot (411) is provided on the outer wall of the middle part of the back of the disc (41). Semicircular slots (412) are provided on the inner walls of both ends of the inner cavity of the circular slot (411). Engaging inner grooves (413) are provided on the top and bottom surfaces of the inner cavity of the circular slot (411).

3. The fine leveling device for building walls according to claim 2, characterized in that: A collection groove (51) is provided on the middle outer wall of the front end of the outer cover (5). A through hole (52) is provided in the middle of the outer cover (5), and the through hole (52) and the collection groove (51) are connected. Four L-shaped through holes (53) are evenly provided on the inner wall of the inner cavity of the through hole (52). Four three-way grooves (54) are evenly provided on the outer periphery of the front end of the outer cover (5), and the three-way grooves (54) are respectively connected to the outer ends of the L-shaped through holes (53). A connecting mesh hole (55) is provided at both ends of the bottom surface of the lower end of the outer cover (5), and the connecting mesh hole (55) is connected to the collection groove (51).

4. The fine leveling device for building walls according to claim 3, characterized in that: An embedded semi-circular groove (531) is provided on the rear inner wall of the L-shaped through hole (53).

5. The device for fine leveling of building walls according to claim 4, characterized in that: The wear-resistant frame (6) includes a connecting ring (61) and four L-shaped push rods (62) evenly fixed on the outer wall of the connecting ring (61). The outer ends of the L-shaped push rods (62) are each equipped with casters (63). A connecting ring (64) is fixedly installed on the middle outer wall of the rear side of the connecting ring (61). The tail end of the connecting ring (64) is elastically slidably installed in the ring groove (12) via a return spring (68). The L-shaped push rods (62) pass through the L-shaped through hole (53). At the rear side of the inner cavity, the insertion ring (64) is elastically installed in the through hole (52) through several spring springs (65). The two ends of the insertion ring (64) are respectively fixedly installed on the outer walls of the two ends. The inner cavity of the T-shaped groove (11) is provided with a push collar (67). The tail ends of the limit slider (66) are respectively fixedly installed on the outer wall of the front end of the push collar (67). The limit slider (66) is slidably installed in the connecting slide hole (13).

6. The device for fine leveling of building walls according to claim 5, characterized in that: The L-shaped push rod (62) includes a horizontal straight rod (621) and a protruding connecting block (622) fixedly installed on the outer wall of the outer end of the horizontal straight rod (621). A semi-circular protrusion (623) is fixedly installed on the rear outer wall of the middle part of the horizontal straight rod (621), and the semi-circular protrusion (623) is embedded in the embedded semi-circular groove (531).

7. The fine leveling device for building walls according to claim 6, characterized in that: The top surface of the collection hood (7) is provided with a dust collection trough (71), and a three-way compensation trough (72) is provided at the middle of the front end of the upper end of the collection hood (7). The dust collection trough (71) and the three-way compensation trough (72) are connected, and the connecting mesh (55) is connected to the dust collection trough (71) respectively.

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