A wall grinding device for building renovation

Abstract

The invention relates to the technical field of building decoration equipment, and specifically proposes a wall grinding device for building renovation; it comprises a frame, on which a plurality of grinding assemblies for wall grinding are installed in a horizontal and linear distribution; the grinding assembly comprises a cylindrical cover fixed on the frame in an axial and horizontal manner, and a grinding execution component is installed on the cylindrical cover; the grinding execution component comprises a sandpaper disc coaxially arranged and rotationally driven and installed on the cylindrical cover; the cylindrical cover is equipped with a disc surface cleaning mechanism for automatically cleaning the sandpaper fixing surface of the sandpaper disc; the cylindrical cover is also equipped with a dust collecting component for blocking and collecting dust; the device provided by the invention can automatically clean the disc surface of the sandpaper disc, and can cooperate to complete the rapid replacement of sandpaper, and at the same time can realize automatic cleaning of the dust removal structure in the device, which comprehensively improves the convenience of using the device, and indirectly improves the construction efficiency of grinding when grinding large-area wall surfaces.

Description

Technical Field

[0001] The invention relates to the technical field of building decoration equipment, and specifically proposes a wall grinding device for building renovation. Background Art

[0002] In the field of building decoration, during the process of building renovation, especially in the process of renovating old houses, it is often necessary to polish the walls, and wall polishing is a very important construction step. Wall polishing can remove old coatings, repair wall defects and make the wall smooth. It can enhance the wall adhesion during subsequent wall painting and improve the overall effect after painting.

[0003] In the existing construction process, in order to reduce labor intensity and improve grinding efficiency, workers generally use wall grinding machines to grind walls. The wall grinding machine has at least one wheel driven by a motor. The wheel is usually used to fix and paste sandpaper. Sandpaper is a consumable material, and rough sandpaper with a low mesh number is basically used for wall grinding. In the process of grinding construction for large-area walls, the sandpaper is consumed quickly, so it is inevitable to replace the sandpaper frequently, and it needs to be replaced manually. When the sandpaper is glued and attached to the wheel, on the one hand, it is inconvenient and laborious to tear off the sandpaper. On the other hand, after the sandpaper is torn off, glue will remain on the wheel, and a lot of dust will be generated during the grinding process. More dust particles are easily adhered to the wheel. When the sandpaper is replaced and pasted again, the adhesion of the sandpaper will be affected. The sandpaper is prone to dislocation and wrinkles during grinding, and at the same time, it will affect the flatness after the sandpaper is pasted, and then affect the flatness of the wall grinding; therefore, the surface of the wheel often needs to be cleaned regularly by hand.

[0004] In addition, in order to solve the dust removal problem during the grinding process, the existing wall grinding machine is installed with a brush ring for filtering dust, and is also used in conjunction with a vacuum cleaner. However, a large amount of dust generated during the grinding process will quickly adhere to the brush ring, causing the adhesion of the brush ring to reach saturation. Therefore, the brush ring also needs to be cleaned. In actual cleaning, it is generally cleaned manually. The brush ring has a relatively dense bristle layer structure, which makes manual cleaning difficult, and therefore cannot achieve quick and effective cleaning.

[0005] In summary, the existing wall grinding machines still need to be improved and enhanced in terms of ease of use and overall construction efficiency. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a wall grinding device for building renovation, which is used to solve the problems mentioned in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve it: a wall grinding device for building renovation, comprising a frame, on which a plurality of grinding assemblies for wall grinding are installed in a horizontal and linear distribution; the grinding assembly comprises a cylindrical cover fixed axially and horizontally on the frame, and a grinding execution component is mounted on the cylindrical cover.

[0008] The grinding execution component includes a sandpaper disc coaxially arranged and rotationally driven and installed on a cylindrical cover; the cylindrical cover is equipped with a disc surface cleaning mechanism for automatically cleaning the sandpaper fixing surface of the sandpaper disc; the disc surface cleaning mechanism includes a cleaning brush driven along the axial direction of the cylindrical cover, the cleaning brush includes a brush body seat and a brush body fixed on the brush body seat; an embedding groove for embedding and hiding the cleaning brush is provided on the sandpaper fixing surface of the sandpaper disc; when the cleaning brush moves and hides in the embedding groove, the end face of the brush body seat is flush with the sandpaper fixing surface of the sandpaper disc, and when the cleaning brush is moved out of the embedding groove, the brush body faces the sandpaper fixing surface of the sandpaper disc.

[0009] The cylindrical cover is also equipped with a dust collecting component for blocking and collecting dust. The dust collecting component includes a dust collecting retaining ring in a circular ring shape, and the sandpaper disc is surrounded by the dust collecting retaining ring.

[0010] Preferably, the disk cleaning mechanism further comprises a sliding frame axially slidably mounted on the cylindrical cover, the sliding frame comprises a rotating drum coaxially rotatable with the cylindrical cover, the brush body seat is fixed at the end of the rotating drum, and the rotating drum is located in the dust collecting retaining ring.

[0011] Preferably, the sliding frame also includes a disc located inside the cylindrical cover, and the rotating drum is rotatably mounted on the disc via a slewing bearing. A plurality of guide rods that slide in cooperation with the cylindrical cover are horizontally fixed on the surface of the disc that faces away from the cleaning brush, and the guide rods are arranged parallel to the central axis of the cylindrical cover.

[0012] Preferably, the dust collecting component also includes a sliding ring and a sliding disk which are installed on multiple guide rods in a sliding manner, a reset spring is connected between the sliding ring and the sliding disk, and the sliding ring is arranged at a farther distance from the sliding disk and the sandpaper disk; the dust collecting baffle is fixed on the sliding disk; a cam ring is coaxially fixed on the sliding disk, and a convex-concave surface with alternating undulations is provided on the annular surface of the cam ring facing away from the disk, and a radial axis is fixed on the rotating shaft of the sandpaper disk; when the dust collecting component moves toward the inner side of the depth of the cylindrical cover, the concave-convex surface of the cam ring will contact the radial axis.

[0013] Preferably, the embedding groove is a cross groove structure, and the center of the cross structure of the embedding groove coincides with the center of the sandpaper disk, and a positioning hole extending axially is provided on the sandpaper disk at the center of the embedding groove, and the positioning hole is a square structure; the brush body seat is a cross plate structure matching the contour of the embedding groove, and a self-adaptive pin that is plug-matched with the positioning hole is fixed at the cross center of the brush body seat, the self-adaptive pin is a square rod structure, and the insertion end of the self-adaptive pin is set with a conical chamfer.

[0014] Preferably, a spline cylinder is coaxially arranged on the circular disc; a keyway cylinder slidably sleeved on the spline cylinder is arranged on the sliding disc, and the cam ring is coaxially fixed to the end of the keyway cylinder.

[0015] Preferably, a plurality of dust suction holes are distributed on the circumference of the sliding disk, and the dust suction holes are distributed at least on the area of ​​the sliding disk covered by the dust collecting baffle ring.

[0016] Preferably, a dust exhaust port facing downward is provided on the side wall of the cylindrical cover; the frame is equipped with a dust collecting bin for collecting grinding dust from multiple grinding assemblies, and the dust collecting bin is provided with multiple docking ports corresponding one by one to the dust exhaust ports of the multiple grinding assemblies.

[0017] Preferably, a series ring is commonly fixed at one end of the plurality of guide rods, a No. 1 driving assembly is mounted on the frame, the No. 1 driving assembly comprises a No. 1 series plate driven and displaced along the axial direction of the cylindrical cover, and the series rings in the plurality of grinding assemblies are all fixed on the No. 1 series plate.

[0018] Preferably, a connecting rod arranged parallel to the axial direction thereof is fixed on the sliding ring, and the connecting rod passes through the cylindrical cover; a No. 2 driving assembly is mounted on the frame, and the No. 2 driving assembly includes a No. 2 serial plate driven and displaced along the axial direction of the cylindrical cover, and the connecting rods in the multiple grinding assemblies are all fixed on the No. 2 serial plate.

[0019] The above technical scheme has the following advantages or beneficial effects: the present invention provides a wall grinding device for building renovation, which can be assembled on the execution end of an existing mechanical arm, and can be synchronously cooperated with an existing vacuum cleaner for grinding and dust removal; a plurality of grinding assemblies are arranged in the device, that is, a plurality of grinding stations are arranged, which improves the grinding construction efficiency; a disk cleaning mechanism is arranged in the grinding assembly, and a No. 1 driving component for synchronously driving the plurality of disk cleaning mechanisms is arranged in a matching manner, which can realize the rapid tearing and separation of sandpaper when the sandpaper is replaced, thus solving the problem of inconvenience and laborious manual tearing of sandpaper, and at the same time, the sandpaper disc can be quickly cleaned as needed before the sandpaper is replaced, thus solving the problem of the need for manual The problem of manual cleaning is solved; in addition, a dust removal component that can be used for dust removal is provided in the grinding assembly, and a second drive component that synchronously drives multiple dust removal components to realize clutch switching inside the dust removal component is provided, which can automatically clean the dust removal structure in the dust removal component, and solves the problem of difficulty in cleaning and low cleaning efficiency during manual cleaning; in summary, the device provided by the present invention can automatically clean the surface of the sandpaper disk, and can cooperate to complete the rapid replacement of sandpaper, and at the same time can realize automatic cleaning of the dust removal structure in the device, which comprehensively improves the convenience of using the device, and indirectly improves the grinding construction efficiency when grinding large-area wall surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0021] Figure 1 The invention provides a schematic diagram of the three-dimensional structure of a wall grinding device for building renovation.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of a wall grinding device for building renovation provided by the present invention at another viewing angle.

[0023] Figure 3 The present invention is a front view of a wall grinding device for building renovation provided by the present invention.

[0024] Figure 4 yes Figure 3 Sectional view of AA.

[0025] Figure 5 It is a three-dimensional cross-sectional view of the grinding assembly.

[0026] Figure 6 It is a three-dimensional structural diagram of the assembly of the cylindrical cover and the grinding execution component.

[0027] Figure 7 yes Figure 6 A three-dimensional cross-sectional view of the assembly structure shown.

[0028] Figure 8 It is a three-dimensional structural diagram of the disk cleaning mechanism.

[0029] Fig. 9 It is a three-dimensional structural diagram of the disk cleaning mechanism from another perspective.

[0030] Fig.10 It is a three-dimensional structural diagram of the dust collecting component.

[0031] Fig.11 It is a three-dimensional structural diagram of the assembly of the sliding disk and the dust collecting retaining ring.

[0032] In the figure: 1, frame; 11, main frame; 111, vertical beam; 12, auxiliary frame; 13, dust collection bin; 131, docking port; 132, collection port; 2, grinding assembly; 3, cylinder cover; 31, dust exhaust port; 32, retaining ring; 4, grinding execution assembly; 41, driving motor; 42, sandpaper disc; 421, embedded groove; 422, positioning hole; 43, radial shaft; 431, rotating sleeve; 5, disc cleaning mechanism; 51, sliding frame; 511, disc; 5111, spline cylinder; 5112 , rotating drum; 512, guide rod; 513, serial ring; 52, cleaning brush; 521, brush body seat; 522, self-adaptive pin; 523, brush body; 6, dust collecting component; 61, sliding ring; 611, connecting rod; 62, sliding disk; 621, keyway cylinder; 622, cam ring; 623, dust suction hole; 63, return spring; 64, dust collecting retaining ring; 7, No. 1 driving assembly; 71, No. 1 push rod; 72, No. 1 serial plate; 8, No. 2 driving assembly; 81, No. 2 push rod; 82, No. 2 serial plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] like Figure 1 and Figure 2As shown, a wall grinding device for building renovation includes a frame 1, which is composed of a main frame 11 and a sub-frame 12 welded together. In order to realize mobile grinding along the wall, the sub-frame 12 can be docked and installed on the displacement end of the existing displacement frame, and the displacement frame is an existing electric guide rail frame with multi-directional linear displacement drive, and at least includes a horizontal track and a vertical track, and can be moved perpendicular to the wall; the sub-frame 12 can also be docked and installed on an existing robotic arm, so that the device provided by the present invention is driven by the robotic arm to move and grind along the wall; in this embodiment, the device provided by the present invention is preferably docked and installed on the robotic arm.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, three grinding assemblies 2 for wall grinding are evenly distributed and installed on the main frame 11 in a horizontal straight line; two vertical beams 111 are provided on the main frame 11, and the two vertical beams 111 and the three grinding assemblies 2 are distributed alternately, and the three grinding assemblies 2 are fixed in series in sequence through the two vertical beams 111.

[0037] like Figure 5 , Figure 6 and Figure 7 As shown, the grinding assembly 2 includes a cylindrical cover 3 axially and horizontally welded on the vertical beam 111, and the two ends of the cylindrical cover 3 are open and closed structures respectively; a grinding execution component 4 is mounted on the cylindrical cover 3; the grinding execution component 4 includes a driving motor 41 fixed to the outer wall of the closed end of the cylindrical cover 3 by bolts and a sandpaper disc 42 fixed to the output shaft of the driving motor 41, and the output shaft of the driving motor 41 is the rotating shaft of the sandpaper disc 42; the sandpaper disc 42 is located in the cylindrical cover 3, and the sandpaper fixing surface on the sandpaper disc 42 is exposed from the open end of the cylindrical cover 3. Under the prior art, sandpaper is often used for wall grinding, and the sandpaper is mostly adhesive sandpaper, and the adhesive sandpaper can be directly attached to the sandpaper disc 42.

[0038] like Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9As shown, the cylindrical cover 3 is equipped with a disk surface cleaning mechanism 5 for automatically cleaning the sandpaper fixing surface of the sandpaper disk 42; the disk surface cleaning mechanism 5 includes a sliding frame 51 mounted on the cylindrical cover 3 and a cleaning brush 52 mounted on the sliding frame 51; the sliding frame 51 includes four guide rods 512 mounted on the cylindrical cover 3 along the axial direction of the cylindrical cover 3 and slidingly matched, and the four guide rods 512 are evenly distributed around the central axis of the cylindrical cover 3; a disk 511 is welded between the ends of the four guide rods 512 located inside the cylindrical cover 3, and a series ring 513 is welded between the ends of the four guide rods 512 located outside the cylindrical cover 3, and the driving motor 41 passes through the series ring 513; a rotating cylinder 5112 is rotatably mounted on the disk 511 through a slewing bearing, and a spline cylinder 5111 is coaxially arranged on the disk 511; the output shaft of the driving motor 41 passes through the central axis of the spline cylinder 5111, and the sandpaper disk 42 is located in the rotating cylinder 5112 ; The cleaning brush 52 includes a brush body seat 521 in a cross-plate structure and a brush body 523 glued and fixed to four support plates on the brush body seat 521. The brush body seat 521 is fixed to the end of the rotating drum 5112 by screws. In the present embodiment, the brush body 523 is made of sponge material and can be replaced regularly; the sandpaper fixing surface of the sandpaper disc 42 is provided with an embedding groove 421 for the cleaning brush 52 to be embedded and hidden, the embedding groove 421 is in a cross-slot structure, and the cross structure center of the embedding groove 421 coincides with the center of the sandpaper disc 42; the contour of the embedding groove 421 cooperates with the contour of the brush body seat 521; a positioning hole 422 extending axially is provided at the center of the embedding groove 421 on the sandpaper disc 42, the positioning hole 422 is in a square structure, and a self-adaptive pin 522 that is plugged and matched with the positioning hole 422 is welded at the cross center of the brush body seat 521, the self-adaptive pin 522 is in a square rod structure, and the insertion end of the self-adaptive pin 522 is provided with a conical chamfer.

[0039] like Figure 2 , Figure 4 and Figure 5As shown, the sub-frame 12 is equipped with a No. 1 driving assembly 7, which includes a No. 1 push rod 71 horizontally fixed on the sub-frame 12 and a No. 1 series plate 72 fixed to the output end of the No. 1 push rod 71, and the series rings 513 in the three grinding assemblies 2 are all welded to the No. 1 series plate 72; the No. 1 push rod 71 is an electric push rod with a fixed stroke, and the No. 1 push rod 71 can drive the disk cleaning mechanisms 5 in the three grinding assemblies 2 to move synchronously along the axial direction of the cylindrical cover 3 through the No. 1 series plate 72. When the output rod of the No. 1 push rod 71 is fully retracted, the cleaning brush 52 moves and hides in the embedding groove 421, and the end face of the brush body seat 521 is flush with the sandpaper fixing surface of the sandpaper disc 42. At this time, the brush body seat 521 fills the embedding groove 421, and the end of the brush body seat 521 The surface and the sandpaper disc 42 together constitute a complete disc surface for sticking and fixing sandpaper, and the cleaning brush 52 can rotate synchronously with the sandpaper disc 42; when the output rod of the No. 1 push rod 71 is fully extended, the cleaning brush 52 is removed from the embedding groove 421. It should be noted that in order to ensure that the brush body 523 can form an effective cleaning contact with the sandpaper fixing surface of the sandpaper disc 42, when the cleaning brush 52 is moved out of the embedding groove 421, in fact, part of the brush body 523 is located in the embedding groove 421; at this time, the self-adaptive pin 522 is removed from the positioning hole 422, and the cleaning brush 52 does not rotate with the sandpaper disc 42. During the removal of the cleaning brush 52, the sandpaper can be automatically separated from the disc surface of the sandpaper disc 42, so that when replacing the sandpaper, the sandpaper and the sandpaper disc 42 can be quickly separated, which is convenient for the replacement operation.

[0040] After the cleaning brush 52 is removed and before replacing and pasting new sandpaper, the surface of the sandpaper disc 42 can be automatically cleaned. By starting the drive motor 41 to drive the sandpaper disc 42 to rotate, since the cleaning brush 52 does not rotate synchronously with the sandpaper disc 42 when it is removed, the brush body 523 can clean the entire surface of the sandpaper disc 42, thereby cleaning and removing the glue remaining from the sandpaper pasted on the sandpaper disc 42 and dust particles attached to the surface of the disc, so as to ensure the effective pasting of the new sandpaper and the overall flatness after the sandpaper is pasted, so as to better achieve The existing wall surface is polished. During the cleaning process, the corresponding organic solvent can be sprayed to soften and dissolve the residual glue. Through the setting of the disk cleaning mechanism 5, the three sandpaper disks 42 can be quickly cleaned synchronously instead of manually. It should be added that during the automatic cleaning process, the end face of the brush body seat 521 cannot be automatically cleaned, but the end face of the brush body seat 521 is relatively small compared to the overall disk surface of the sandpaper disk 42. Therefore, the cleaning of the brush body seat 521 can be ignored in two or three automatic cleaning processes, and secondly, it can be cleaned manually regularly.

[0041] In addition, it should be noted that after the automatic cleaning of the sandpaper disk 42 is completed, the embedding groove 421 is most likely in a misaligned state relative to the cleaning brush 52, and the maximum misalignment deviation angle is 45°. At this time, in the process of moving the cleaning brush 52 into the embedding groove 421 again, the self-adaptive pin 522 will be aligned with the insertion positioning hole 422 through the conical chamfered end, and as it is inserted, since the cleaning brush 52 itself is rotatable, the self-adaptive pin 522 will automatically adjust and complete the plug-in fit with the positioning hole 422, so that the cleaning brush 52 automatically deflects and forms an alignment fit with the embedding groove 421. Before the insertion self-adaptive adjustment is completed, the brush body seat 521 has not extended into the embedding groove 421, so it does not interfere with the self-deflection adjustment.

[0042] like Figure 1 , Figure 4 , Figure 5 , Fig.10 and Fig.11As shown, the cylindrical cover 3 is also equipped with a dust collecting component 6 for blocking and collecting dust. The dust collecting component 6 includes a sliding ring 61 and a sliding disk 62 which are slidably mounted on four guide rods 512. A reset spring 63 is sleeved on the four guide rods 512, and the two ends of the reset spring 63 are respectively welded to the sliding ring 61 and the sliding disk 62; the sliding ring 61 is arranged at a relatively far distance from the sliding disk 62 and the sandpaper disk 42; a circular dust collecting baffle 64 is fixed on the sliding disk 62, and the rotating drum 5112 is located in the dust collecting baffle 64. In this embodiment, the dust collecting baffle 64 is a brush ring; a plurality of dust suction holes 623 are evenly distributed on the circumference of the sliding disk 62, and the dust suction holes 623 are distributed on the sliding disk 62 in the area covered by the dust collecting baffle 64. A keyway cylinder 621 slidingly sleeved on the spline cylinder 5111 is welded on the end of the sliding disk 62 facing away from the brush ring, and a cam ring 622 is coaxially welded on the end of the keyway cylinder 621. The cam ring 622 is provided with a concave and convex surface with alternating undulations on the annular surface facing away from the disk 511. A radial shaft 43 is welded on the output shaft of the driving motor 41, and a rotating sleeve 431 is sleeved on the radial shaft 43. A connecting rod 611 arranged parallel to the axial direction thereof is welded on the sliding ring 61, and the connecting rod 611 slides through the cylindrical cover 3. A cylindrical cover 3 is provided on the side wall. There is a dust outlet 31 facing downward; the main frame 11 is equipped with a dust collecting bin 13 for collecting the grinding dust of the three grinding assemblies 2. The top of the dust collecting bin 13 is provided with three docking ports 131 corresponding to the dust outlets 31 of the three grinding assemblies 2. The docking ports 131 and the dust outlets 31 are both rectangular cylinder structures with square flanges; a collection port 132 is provided at the bottom center of the dust collecting bin 13; in this embodiment, the device provided by the present invention is also used in conjunction with an existing vacuum cleaner, and the air pipe of the vacuum cleaner is connected to the collection port 132. In addition, in order to improve the sealing and collecting effect, a retaining ring 32 is welded to the open end of the cylindrical cover 3, and a circular sponge can be fixed on the retaining ring 32. When the wall is polished, the circular sponge can be closely attached to the wall surface, so that the dust generated by the polishing basically enters the cylindrical cover 3.

[0043] When grinding the wall, a large amount of dust will be generated. The dust enters the cylindrical cover 3 and will be filtered in advance by the dust collecting ring 64. Larger particles of dust will adhere to the dust collecting ring 64, while finer dust will enter the dust collecting bin 13 through the dust discharge port 31 and be further absorbed by the vacuum cleaner. Through the pre-filtration effect, all dust, especially large particles of dust, are prevented from entering the vacuum cleaner, thereby ensuring the normal working efficiency of the vacuum cleaner during the grinding process and extending the service life of the vacuum cleaner.

[0044] like Figure 2 , Figure 4 and Figure 5As shown, the sub-frame 12 is equipped with a No. 2 driving assembly 8, which includes a No. 2 push rod 81 horizontally fixed to the sub-frame 12 by bolts and a No. 2 series plate 82 fixed to the output end of the No. 2 push rod 81. The No. 2 push rod 81 is an electric push rod, and the connecting rods 611 in the three grinding assemblies 2 are all welded to the No. 2 series plate 82. The No. 2 driving assembly 8 serves as a clutch mechanism between the radial shaft 43 and the cam ring 622. When the No. 2 push rod 81 is fully extended, the dust collecting ring 64 is close to the open end port of the cylindrical cover 3 and is closest to the sandpaper disk 42. During the grinding process, it can more effectively absorb and filter dust. When the No. 2 push rod 81 is fully retracted, the dust collecting component 6 as a whole moves toward the inner side of the depth of the cylindrical cover 3, and the rotating sleeve 431 is in contact with the concave and convex surface of the cam ring 622. At the same time, the dust collecting ring 64 moves to a position directly above the dust outlet 31, so that the dust can better fall downward into the dust outlet 31.

[0045] After the wall has been polished for a period of time, a large amount of dust will adhere to the dust collecting ring 64, gradually reaching a saturated state, and the adhesion and air permeability will gradually deteriorate. Therefore, the dust collecting ring 64 needs to be cleaned. When cleaning, the air pipe of the vacuum cleaner can be disconnected from the collection port 132, and then the radial shaft 43 is moved to a contact state with the cam ring 622 through the No. 2 drive component 8. Then, the drive motor 41 is started, and the drive motor 41 drives the radial shaft 43 to rotate, and the radial shaft 43 rotates and rolls along the concave and convex surface of the cam ring 622, so that with the cooperation of the reset spring 63, the dust collecting ring 64 and the sliding disk 62 perform high-frequency jitter in the axial direction of the cylindrical cover 3, thereby automatically detaching the dust attached to the dust collecting ring 64, completing the self-cleaning of the dust collecting ring 64, and the detached dust falls from the dust collecting bin 13.

[0046] During actual construction, the wall can be roughly polished first to remove the old coating layer with more defects on the wall. Then, based on the rough polishing of the wall, a level ruler can be used to measure and determine the minimum thickness required for polishing when the wall is polished to a flat state, and then the wall is finely polished. During polishing, the sandpaper disc 42 of the polishing assembly 2 is tightly attached to the more convex wall area to serve as the starting polishing point for vertical advancement relative to the wall. Then, the device provided by the present invention is driven by the mechanical arm to polish along the wall, and gradually advances in a direction perpendicular to the wall until it is polished to the required thickness. During the polishing process, under the driving cooperation of the No. 1 drive component 7, the sandpaper can be quickly replaced by the disk cleaning mechanism 5 in cooperation with manual labor, and the disk of the sandpaper disc 42 can be quickly and automatically cleaned as needed before replacement. In addition, in the grinding work gap, under the driving cooperation of the No. 2 drive component 8, the dust collecting ring 64 can be quickly cleaned by the dust collecting component 6.

[0047] The present invention provides a wall grinding device for building renovation, which can be assembled on the execution end of an existing mechanical arm and can be synchronously matched with an existing vacuum cleaner for grinding and dust removal; a plurality of grinding assemblies 2 are arranged in the device, that is, a plurality of grinding stations are provided, which improves the grinding construction efficiency; a disk cleaning mechanism 5 is arranged in the grinding assembly 2, and a No. 1 driving component 7 for synchronously driving the plurality of disk cleaning mechanisms 5 is also arranged in a matching manner, which can realize the rapid tearing and separation of sandpaper when the sandpaper is replaced, thereby solving the problem of inconvenience and laborious manual tearing of sandpaper, and at the same time, the sandpaper disc 42 can be quickly cleaned as needed before the sandpaper is replaced, thereby solving the problem of manual cleaning. ; In addition, a dust removal component that can be used for dust removal is provided in the polishing assembly 2, and a second drive component 8 is provided to synchronously drive multiple dust removal components to realize clutch switching inside the dust removal component, which can automatically clean the dust removal structure in the dust removal component, and solves the problem of difficulty and low cleaning efficiency during manual cleaning; in summary, the device provided by the present invention can automatically clean the surface of the sandpaper disk 42, and can cooperate to complete the rapid replacement of sandpaper, and at the same time can realize automatic cleaning of the dust removal structure in the device, which comprehensively improves the convenience of using the device, and indirectly improves the polishing construction efficiency when polishing large-area wall surfaces.

[0048] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0050] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A wall grinding device for building renovation, characterized in that: The invention comprises a frame (1), on which a plurality of grinding assemblies (2) for wall grinding are installed in a horizontally linear distribution; the grinding assembly (2) comprises a cylindrical cover (3) fixed axially and horizontally on the frame (1), and a grinding execution component (4) is mounted on the cylindrical cover (3); wherein: The grinding execution component (4) comprises a sandpaper disc (42) coaxially arranged and rotationally driven and mounted on a cylindrical cover (3); the cylindrical cover (3) is equipped with a disc surface cleaning mechanism (5) for automatically cleaning the sandpaper fixing surface of the sandpaper disc (42); the disc surface cleaning mechanism (5) comprises a cleaning brush (52) arranged along the axial direction of the cylindrical cover (3); the cleaning brush (52) comprises a brush body seat (521) and a brush body (521) fixed on the brush body seat (521). 523); an embedding groove (421) for embedding and hiding the cleaning brush (52) is provided on the sandpaper fixing surface of the sandpaper disk (42); when the cleaning brush (52) is moved and hidden in the embedding groove (421), the end surface of the brush body seat (521) is flush with the sandpaper fixing surface of the sandpaper disk (42); when the cleaning brush (52) is removed from the embedding groove (421), the brush body (523) faces the sandpaper fixing surface of the sandpaper disk (42); The cylindrical cover (3) is also equipped with a dust collecting component (6) for blocking and collecting dust. The dust collecting component (6) comprises a dust collecting retaining ring (64) in the form of an annular ring. The sandpaper disc (42) is enclosed in the dust collecting retaining ring (64).

2. A wall grinding device for building renovation according to claim 1, characterized in that: The disk cleaning mechanism (5) further comprises a sliding frame (51) mounted on the cylindrical cover (3) in an axially sliding manner, the sliding frame (51) comprising a rotating cylinder (5112) arranged to rotate coaxially with the cylindrical cover (3), the brush body seat (521) being fixed to the end of the rotating cylinder (5112), and the rotating cylinder (5112) being located in a dust collecting retaining ring (64).

3. A wall grinding device for building renovation according to claim 2, characterized in that: The sliding frame (51) further comprises a disc (511) located inside the cylindrical cover (3); the rotating cylinder (5112) is rotatably mounted on the disc (511) via a slewing bearing; a plurality of guide rods (512) that are slidably engaged with the cylindrical cover (3) are horizontally fixed on a surface of the disc (511) that faces away from the cleaning brush (52); the guide rods (512) are arranged parallel to the central axis of the cylindrical cover (3).

4. A wall grinding device for building renovation according to claim 3, characterized in that: The dust collecting component (6) further comprises a sliding ring (61) and a sliding disk (62) which are mounted on the plurality of guide rods (512) in a sliding manner, and a return spring (63) is connected between the sliding ring (61) and the sliding disk (62); the dust collecting retaining ring (64) is fixed on the sliding disk (62); a cam ring (622) is coaxially fixed on the sliding disk (62), and a concave-convex surface with alternating concave and convex undulations is provided on the annular surface of the cam ring (622) facing away from the disk (511); a radial shaft (43) is fixed on the rotating shaft of the sandpaper disk (42); when the dust collecting component (6) moves toward the inner side of the depth of the cylindrical cover (3), the concave-convex surface of the cam ring (622) will contact the radial shaft (43).

5. A wall grinding device for building renovation according to claim 1, characterized in that: The embedding groove (421) is in a cross groove structure, and the center of the cross structure of the embedding groove (421) coincides with the center of the sandpaper disc (42); a positioning hole (422) extending in the axial direction is provided on the sandpaper disc (42) at the center of the embedding groove (421); the positioning hole (422) is in a square structure; the brush body seat (521) is in a cross plate structure matching the contour of the embedding groove (421), and a self-adaptive pin (522) plug-fitting with the positioning hole (422) is fixed at the center of the cross of the brush body seat (521); the self-adaptive pin (522) is in a square rod structure, and the insertion end of the self-adaptive pin (522) is provided with a conical chamfer.

6. A wall grinding device for building renovation according to claim 4, characterized in that: A spline cylinder (5111) is coaxially arranged on the circular disc (511); a keyway cylinder (621) is slidably sleeved on the spline cylinder (5111) and is arranged on the sliding disc (62); and the cam ring (622) is coaxially fixed to the end of the keyway cylinder (621).

7. A wall grinding device for building renovation according to claim 4, characterized in that: A plurality of dust suction holes (623) are distributed on the circumference of the sliding disc (62), and the dust suction holes (623) are distributed at least on the sliding disc (62) in the area covered by the dust collecting retaining ring (64).

8. A wall grinding device for building renovation according to claim 1, characterized in that: The cylindrical cover (3) is provided with a dust outlet (31) facing downward on the side wall; the frame (1) is provided with a dust collecting bin (13) for collecting grinding dust from a plurality of grinding assemblies (2); the dust collecting bin (13) is provided with a plurality of docking ports (131) corresponding one-to-one with the dust outlets (31) of the plurality of grinding assemblies (2).

9. A wall grinding device for building renovation according to claim 3, characterized in that: A serial link (513) is commonly fixed at one end of the plurality of guide rods (512); a No. 1 drive assembly (7) is mounted on the frame (1); the No. 1 drive assembly (7) comprises a No. 1 serial link plate (72) that drives and displaces along the axial direction of the cylindrical cover (3); and the serial link rings (513) in the plurality of grinding assemblies (2) are all fixed on the No. 1 serial link plate (72).

10. A wall grinding device for building renovation according to claim 4, characterized in that: A connecting rod (611) arranged parallel to the axis of the sliding ring (61) is fixed on the sliding ring (61), and the connecting rod (611) passes through the cylindrical cover (3); a second driving assembly (8) is mounted on the frame (1), and the second driving assembly (8) includes a second serial plate (82) driven to move along the axis of the cylindrical cover (3), and the connecting rods (611) in the plurality of grinding assemblies (2) are all fixed on the second serial plate (82).

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