Scraping device for puttying

By designing a stabilizing frame and a threaded rod-driven extrusion block to extrude the flexible metal scraper, the problem of difficulty in scraping the curved walls and putty residues is solved, achieving efficient scraping, smoothing and convenient cleaning.

CN223048388UActive Publication Date: 2025-07-01FANNIE MAE BUILDING MATERIALS (TIANJIN) CO LTD
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Patent Information

Application Number
CN202421724439.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-19
Publication Date
2025-07-01
Estimated Expiration
2034-07-19

AI Technical Summary

Technical Problem

Most existing flat scrapers are planar metal scrapers, which are difficult to effectively flatten the curved walls. After flattening, putty remains on the outer wall of the scraper and it is difficult to quickly clean up, affecting subsequent construction.

Method used

A flat scraper is designed, including a stabilizing frame, a flexible metal scraper, a threaded rod and an extrusion block. The threaded rod drives the extrusion block to extrude the flexible metal scraper, and uses the initial limit of the arc-shaped rubber sheet to achieve scraping and flattening the curved wall; the cleaning mechanism cleans the outer wall of the scraper through the moving block and the cleaning plate.

Benefits of technology

It realizes efficient scraping and flattening of planes and curved surfaces, increases the applicability of the scraper, and facilitates the cleaning of putty residues, reducing the impact on construction after drying.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of puttying, in particular to a strickling device for puttying, which comprises a strickling device mechanism, the inner wall of the strickling device mechanism is fixedly connected with the bottom end of a stabilizing mechanism, one side of the strickling device mechanism is fixedly connected with one end of a fixing mechanism, and the inner wall of the strickling device mechanism is fixedly connected with the bottom end of the stabilizing mechanism through a threaded ring. When an arc-shaped surface needs to be scraped, the flexible metal scraping plate is bent, the flexible metal scraping plate is placed above a stabilizing frame, the flexible metal scraping plate is located between arc-shaped rubber sheets, and the flexible metal scraping plate is fixed to the arc-shaped rubber sheets through the arc-shaped rubber sheets, so that the arc-shaped surface is scraped. The flexible metal scraping plate is preliminarily limited by the arc-shaped rubber sheet, meanwhile, the flexible metal scraping plate moves on the arc-shaped surface of the arc-shaped block, and the rotating block is rotated to drive the threaded rod and the extrusion block to move, so that the extrusion block stably extrudes the outer wall of the flexible metal scraping plate, and the device can conveniently strike flat a plane and a curved surface.
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Description

Technical Field

[0001] The utility model relates to the technical field of putty scraping, in particular to a putty scraping leveler. Background Technique

[0002] Putty scraping is one of the methods for interior wall decoration. The putty is scraped on the wall to ensure the wall surface is flat. Generally, it is scraped three times and then polished flat with sandpaper after drying. This step is carried out before applying latex paint. When scraping putty, a leveler is needed for operation.

[0003] Most of the existing levelers have relatively simple structures, mostly composed of a metal scraping plate and a handle. Since most of the metal scraping plates are flat surfaces, it is difficult to effectively level a curved wall, reducing the applicability of the leveler. Secondly, since the putty will remain on the outer wall of the metal scraping plate after leveling, it is difficult to clean quickly, and the remaining putty will affect the subsequent construction after drying. Content of the Utility Model

[0004] The purpose of the utility model is to provide a putty scraping leveler to solve the problems put forward in the above background technique that most of the metal scraping plates are flat surfaces, it is difficult to effectively level a curved wall, reducing the applicability of the leveler. Secondly, since the putty will remain on the outer wall of the metal scraping plate after leveling, it is difficult to clean quickly, and the remaining putty will affect the subsequent construction after drying. To achieve the above purpose, the utility model provides the following technical solution: A putty scraping leveler, including a leveler mechanism, the inner wall of the leveler mechanism is fixedly connected to the bottom end of a stability mechanism, and one side of the leveler mechanism is fixedly connected to one end of a fixing mechanism.

[0005] The inner wall of the leveler mechanism is movably connected to the outer wall of a pin mechanism, the inner wall of the leveler mechanism is movably connected to the outer wall of a cleaning mechanism, and the inner wall of the stability mechanism is movably connected to the outer wall of the fixing mechanism.

[0006] Preferably, the leveler mechanism includes a stability frame, a handle and a flexible metal scraping plate. A hand-holding groove is formed inside the stability frame, one end of the handle is fixedly connected to the inner wall of the hand-holding groove, a stability opening is formed at the top of the stability frame, the bottom of the flexible metal scraping plate is movably connected to the inner wall of the stability opening, moving grooves are formed inside both sides of the stability frame, moving openings are formed above the moving grooves, an extending sliding groove is formed on one side of the moving groove, an extending sliding opening is formed on one side of the moving opening, an arc groove is formed on one side of the inner wall of the stability opening, an arc opening is formed on one side of the inner wall of the stability opening, a through opening is formed inside the stability frame, a pin opening is formed inside the stability frame, and limiting openings are formed at both ends of the pin opening. A socket is formed inside the flexible metal scraping plate, and a connecting groove is formed at the bottom of the stability opening.

[0007] Preferably, the stabilizing mechanism is composed of an arc-shaped block, a rubber block and an arc-shaped rubber sheet. The bottom end of the arc-shaped block is fixedly connected to the inner wall of the arc-shaped groove. Both sides of the inner wall of the stabilizing opening are fixedly connected to one side of the rubber block. The inner wall of the arc-shaped opening is fixedly connected to the outer wall of the arc-shaped rubber sheet. The outer wall of the flexible metal scraper is movably abutted against the outer walls of the rubber block and the arc-shaped rubber sheet. A hollow opening is formed inside the arc-shaped block.

[0008] Preferably, the fixing mechanism includes a threaded ring, a threaded rod, a rotating block and a pressing block. One side of the threaded ring is fixedly connected to one side of the stabilizing frame. A threaded groove is formed inside the threaded ring. The inner wall of the threaded groove is threadedly connected to the outer wall of the threaded rod. One end of the threaded rod is fixedly connected to one end of the rotating block. The end of the threaded rod away from the rotating block is fixedly connected to one end of the pressing block. The outer wall of the threaded rod is movably connected to the inner wall of the through-opening. The end of the pressing block away from the threaded rod is movably abutted against the outer wall of the flexible metal scraper.

[0009] Preferably, the pin mechanism is composed of a moving ring, a pin rod, a connecting spring and a pulling ring. The outer wall of the moving ring is movably connected to the inner wall of the pin opening. The inner wall of the moving ring is fixedly connected to the outer wall of the pin rod. The outer wall of the pin rod is movably connected to the inner wall of the limiting opening. One end of the moving ring is fixedly connected to one end of the connecting spring. The other end of the connecting spring is fixedly connected to the inner wall of the pin opening. One end of the pin rod is fixedly connected to the outer wall of the pulling ring. The outer wall of the pin rod is movably connected to the inner wall of the socket opening.

[0010] Preferably, the cleaning mechanism includes a stabilizing block, a damping block, a cleaning plate, an extension block and a moving block. The outer wall of the stabilizing block is movably connected to the inner walls of the moving groove and the extension sliding groove. The bottom end of the stabilizing block is fixedly connected to the top end of the damping block. The outer wall of the damping block is movably connected to the inner walls of the moving groove and the extension sliding groove. The top end of the stabilizing block is fixedly connected to the bottom end of the cleaning plate. The outer wall of the cleaning plate is movably connected to the inner wall of the connecting groove. One side of the stabilizing block is fixedly connected to one side of the extension block. The side of the extension block away from the stabilizing block is fixedly connected to one side of the moving block. The outer wall of the extension block is movably connected to the inner walls of the moving opening and the limiting sliding opening.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] In this utility model, when leveling a flat surface, the pull ring is pulled to drive the bolt rod to move. The movement of the bolt rod squeezes the connecting spring through the moving ring. The flexible metal scraper is placed on the top of the stabilizing frame, and then the rubber block preliminarily stabilizes the flexible metal scraper. The pull ring is released, and the moving ring is driven to move by the reset of the connecting spring, so that the bolt rod is inserted into the interior of the flexible metal scraper to stabilize the flexible metal scraper. The rotating block is rotated to drive the threaded rod to rotate. Through the setting of the threaded ring, the threaded rod drives the extrusion block to move towards the flexible metal scraper, and then the outer wall of the flexible metal scraper is extruded by the extrusion block. When it is necessary to level an arc surface, the flexible metal scraper is bent and placed above the stabilizing frame, so that the flexible metal scraper is located between the arc-shaped rubber sheets. The flexible metal scraper is preliminarily limited by the arc-shaped rubber sheets. At the same time, the flexible metal scraper moves on the arc surface of the arc-shaped block. The rotating block is rotated to drive the threaded rod and the extrusion block to move, so that the extrusion block extrudes and stabilizes the outer wall of the flexible metal scraper, facilitating the device to level flat and curved surfaces and increasing the applicability of the device.

[0013] In this utility model, when cleaning the outer wall of the flexible metal scraper, first move the moving block upward to drive the stabilizing block to move through the extension block. The movement of the stabilizing block drives the cleaning plate to move upward, so that the cleaning plate fits against the outer wall of the flexible metal scraper. Move the moving block to one side of the stabilizing frame, driving the cleaning plate to move along the outer wall of the flexible metal scraper, thereby cleaning the outer wall of the flexible metal scraper, facilitating the staff to clean the residual putty, and reducing the influence of the dried and caked putty on subsequent construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of this utility model;

[0015] Figure 2 is a sectional view of this utility model;

[0016] Figure 3 is an exploded view of this utility model;

[0017] Figure 4 is an exploded view of the cleaning mechanism in this utility model;

[0018] Figure 5 is an exploded view of the stabilizing mechanism in this utility model;

[0019] Figure 6 is an exploded view of the fixing mechanism in this utility model;

[0020] Figure 7 is an exploded view of the bolt mechanism in this utility model.

[0021] In the figure: 1. Screeding mechanism; 101. Stabilizer; 102. Handle; 103. Flexible metal scraper; 2. Stabilizing mechanism; 201. Arc-shaped block; 202. Rubber block; 203. Arc-shaped rubber sheet; 3. Fixing mechanism; 301. Threaded ring; 302. Threaded rod; 303. Rotating block; 304. Extrusion block; 4. Pin mechanism; 401. Moving ring; 402. Pin rod; 403. Connecting spring; 404. Pulling ring; 5. Cleaning mechanism; 501. Stabilizing block; 502. Damping block; 503. Cleaning plate; 504. Extension block; 505. Moving block. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 7 , the present invention provides a technical solution: a screeding tool for putty scraping, including a screeding mechanism 1, the inner wall of the screeding mechanism 1 is fixedly connected to the bottom end of the stabilizing mechanism 2, and one side of the screeding mechanism 1 is fixedly connected to one end of the fixing mechanism 3.

[0024] The inner wall of the screeding mechanism 1 is movably connected to the outer wall of the pin mechanism 4, the inner wall of the screeding mechanism 1 is movably connected to the outer wall of the cleaning mechanism 5, and the inner wall of the stabilizing mechanism 2 is movably connected to the outer wall of the fixing mechanism 3.

[0025] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the leveling mechanism 1 includes a stabilizing frame 101, a handle 102, and a flexible metal scraping plate 103. An inner holding groove is provided inside the stabilizing frame 101. The inner wall of the holding groove is fixedly connected to one end of the handle 102. A stabilizing opening is provided at the top of the stabilizing frame 101. The inner wall of the stabilizing opening is movably connected to the bottom of the flexible metal scraping plate 103. Moving grooves are provided inside both sides of the stabilizing frame 101. A moving opening is provided above the moving groove. An extending sliding groove is provided on one side of the moving groove. An extending sliding opening is provided on one side of the moving opening. An arc-shaped groove is provided on one side of the inner wall of the stabilizing opening. An arc-shaped opening is provided on one side of the inner wall of the stabilizing opening. A through opening is provided inside the stabilizing frame 101. A pin hole is provided inside the stabilizing frame 101. Limiting openings are provided at both ends of the pin hole. A socket is provided inside the flexible metal scraping plate 103. A connecting groove is provided at the bottom of the stabilizing opening.

[0026] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the stabilizing mechanism 2 is composed of an arc-shaped block 201, a rubber block 202, and an arc-shaped rubber sheet 203. The bottom end of the arc-shaped block 201 is fixedly connected to the inner wall of the arc-shaped groove. Both sides of the inner wall of the stabilizing opening are fixedly connected to one side of the rubber block 202. The outer wall of the arc-shaped opening is fixedly connected to the outer wall of the arc-shaped rubber sheet 203. The outer wall of the flexible metal scraping plate 103 is movably abutted against the outer walls of the rubber block 202 and the arc-shaped rubber sheet 203. A hollow opening is provided inside the arc-shaped block 201. The rubber block 202 initially stabilizes the flexible metal scraping plate 103, and the flexible metal scraping plate 103 is initially limited by the arc-shaped rubber sheet 203.

[0027] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown in the figure, the fixing mechanism 3 includes a threaded ring 301, a threaded rod 302, a rotating block 303 and a pressing block 304. One side of the threaded ring 301 is fixedly connected to one side of the stabilizing frame 101. A threaded groove is formed inside the threaded ring 301, and the inner wall of the threaded groove is threadedly connected to the outer wall of the threaded rod 302. One end of the threaded rod 302 is fixedly connected to one end of the rotating block 303, and the end of the threaded rod 302 away from the rotating block 303 is fixedly connected to one end of the pressing block 304. The outer wall of the threaded rod 302 is movably connected to the inner wall of the through hole, and the end of the pressing block 304 away from the threaded rod 302 is movably abutted against the outer wall of the flexible metal scraper 103. Rotating the rotating block 303 drives the threaded rod 302 to rotate. Through the setting of the threaded ring 301, the threaded rod 302 drives the pressing block 304 to move in the direction of the flexible metal scraper 103, and then the outer wall of the flexible metal scraper 103 is squeezed by the pressing block 304.

[0028] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown, the pin mechanism 4 is composed of a moving ring 401, a pin rod 402, a connecting spring 403 and a pull ring 404. The outer wall of the moving ring 401 is movably connected to the inner wall of the pin hole. The inner wall of the moving ring 401 is fixedly connected to the outer wall of the pin rod 402, and the outer wall of the pin rod 402 is movably connected to the inner wall of the limiting hole. One end of the moving ring 401 is fixedly connected to one end of the connecting spring 403, and the other end of the connecting spring 403 is fixedly connected to the inner wall of the pin hole. One end of the pin rod 402 is fixedly connected to the outer wall of the pull ring 404, and the outer wall of the pin rod 402 is movably connected to the inner wall of the socket. Pulling the pull ring 404 drives the pin rod 402 to move. The movement of the pin rod 402 squeezes the connecting spring 403 through the moving ring 401. Place the flexible metal scraper 103 on the top of the stabilizing frame 101, and then the rubber block 202 preliminarily stabilizes the flexible metal scraper 103. Releasing the pull ring 404 drives the moving ring 401 to move through the reset of the connecting spring 403, so that the pin rod 402 is inserted into the flexible metal scraper 103 to stabilize the flexible metal scraper 103.

[0029] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the cleaning mechanism 5 includes a stabilizing block 501, a damping block 502, a cleaning plate 503, an extension block 504, and a moving block 505. The outer wall of the stabilizing block 501 is movably connected to the inner walls of the moving groove and the extension sliding groove. The bottom end of the stabilizing block 501 is fixedly connected to the top end of the damping block 502, and the outer wall of the damping block 502 is movably connected to the inner walls of the moving groove and the extension sliding groove. The top end of the stabilizing block 501 is fixedly connected to the bottom end of the cleaning plate 503, and the outer wall of the cleaning plate 503 is movably connected to the inner wall of the connecting groove. One side of the stabilizing block 501 is fixedly connected to one side of the extension block 504, and the side of the extension block 504 away from the stabilizing block 501 is fixedly connected to one side of the moving block 505. The outer wall of the extension block 504 is movably connected to the inner walls of the moving port and the limiting sliding port. First, move the moving block 505 upward to drive the stabilizing block 501 to move through the extension block 504. The movement of the stabilizing block 501 drives the cleaning plate 503 to move upward, so that the cleaning plate 503 fits against the outer wall of the flexible metal scraping plate 103. Move the moving block 505 toward one side of the stabilizing frame 101, driving the cleaning plate 503 to move along the outer wall of the flexible metal scraping plate 103, thereby cleaning the outer wall of the flexible metal scraping plate 103.

[0030] The usage method and advantages of the present utility model: When this putty scraping and leveling tool is working, the working process is as follows:

[0031] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, when leveling the plane, pulling the pull ring 404 drives the bolt rod 402 to move. The movement of the bolt rod 402 squeezes the connecting spring 403 through the moving ring 401. Place the flexible metal scraper 103 on the top of the stabilizing frame 101, so that the rubber block 202 preliminarily stabilizes the flexible metal scraper 103. Release the pull ring 404, and the reset of the connecting spring 403 drives the moving ring 401 to move, so that the bolt rod 402 inserts into the inside of the flexible metal scraper 103 to stabilize the flexible metal scraper 103. Rotate the rotating block 303 to drive the threaded rod 302 to rotate. Through the setting of the threaded ring 301, the threaded rod 302 drives the pressing block 304 to move towards the flexible metal scraper 103, and then the outer wall of the flexible metal scraper 103 is squeezed by the pressing block 304. When it is necessary to level the arc surface, bend the flexible metal scraper 103 and place the flexible metal scraper 103 above the stabilizing frame 101, so that the flexible metal scraper 103 is located between the arc-shaped rubber sheets 203. The flexible metal scraper 103 is preliminarily limited by the arc-shaped rubber sheets 203. At the same time, the flexible metal scraper 103 moves on the arc surface of the arc-shaped block 201. Rotate the rotating block 303 to drive the threaded rod 302 and the pressing block 304 to move, so that the pressing block 304 squeezes and stabilizes the outer wall of the flexible metal scraper 103. When cleaning the outer wall of the flexible metal scraper 103, first move the moving block 505 upward to drive the stabilizing block 501 to move through the extension block 504. The movement of the stabilizing block 501 drives the cleaning plate 503 to move upward, so that the cleaning plate 503 fits against the outer wall of the flexible metal scraper 103. Move the moving block 505 to one side of the stabilizing frame 101, driving the cleaning plate 503 to move along the outer wall of the flexible metal scraper 103, thereby cleaning the outer wall of the flexible metal scraper 103.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A scraper for scraping putty, comprising a scraper mechanism (1), characterized in that: The inner wall of the scraper mechanism (1) is fixedly connected to the bottom end of the stabilizing mechanism (2), and one side of the scraper mechanism (1) is fixedly connected to one end of the fixing mechanism (3); The inner wall of the scraper mechanism (1) is movably connected to the outer wall of the latch mechanism (4), the inner wall of the scraper mechanism (1) is movably connected to the outer wall of the cleaning mechanism (5), and the inner wall of the stabilizing mechanism (2) is movably connected to the outer wall of the fixing mechanism (3).

2. A putty scraper according to claim 1, characterized in that: The scraper mechanism (1) comprises a stabilizing frame (101), a handle (102) and a flexible metal scraper (103), and a hand-holding groove is provided inside the stabilizing frame (101), the inner wall of the hand-holding groove is fixedly connected to one end of the handle (102), and a stabilizing opening is provided at the top of the stabilizing frame (101), and the inner wall of the stabilizing opening is movably connected to the bottom of the flexible metal scraper (103), and movable grooves are provided inside both sides of the stabilizing frame (101), a movable opening is provided above the movable groove, and an extension sliding groove is provided on one side of the movable groove, an extension sliding opening is provided on one side of the movable opening, and an arc groove is provided on one side of the inner wall of the stabilizing opening, and an arc opening is provided on one side of the inner wall of the stabilizing opening, and a through opening is provided inside the stabilizing frame (101), a latch opening is provided inside the stabilizing frame (101), and both ends of the latch opening are provided with limit openings, and a socket is provided inside the flexible metal scraper (103), and a connecting groove is provided at the bottom of the stabilizing opening.

3. A putty scraper according to claim 2, characterized in that: The stabilizing mechanism (2) is composed of an arc block (201), a rubber block (202) and an arc rubber sheet (203), and the bottom end of the arc block (201) is fixedly connected to the inner wall of the arc groove, the inner wall of the stabilizing opening is respectively fixedly connected to one side of the rubber block (202), and the inner wall of the arc opening is fixedly connected to the outer wall of the arc rubber sheet (203), and the outer wall of the flexible metal scraper (103) is respectively movably abutted against the outer walls of the rubber block (202) and the arc rubber sheet (203), and a hollow opening is opened inside the arc block (201).

4. A putty scraper according to claim 3, characterized in that: The fixing mechanism (3) comprises a threaded ring (301), a threaded rod (302), a rotating block (303) and an extrusion block (304), and one side of the threaded ring (301) is fixedly connected to one side of the stabilizing frame (101), a threaded groove is provided inside the threaded ring (301), and the inner wall of the threaded groove is threadedly connected to the outer wall of the threaded rod (302), one end of the threaded rod (302) is fixedly connected to one end of the rotating block (303), and the end of the threaded rod (302) away from the rotating block (303) is fixedly connected to one end of the extrusion block (304), the outer wall of the threaded rod (302) is movably connected to the inner wall of the through hole, and the end of the extrusion block (304) away from the threaded rod (302) is movably abutted against the outer wall of the flexible metal scraper (103).

5. The putty scraper according to claim 2, characterized in that: The latch mechanism (4) is composed of a moving ring (401), a latch rod (402), a connecting spring (403) and a pull ring (404), and the outer wall of the moving ring (401) is movably connected to the inner wall of the latch opening, the inner wall of the moving ring (401) is fixedly connected to the outer wall of the latch rod (402), and the outer wall of the latch rod (402) is movably connected to the inner wall of the limit opening, a section of the moving ring (401) is fixedly connected to one end of the connecting spring (403), and the other end of the connecting spring (403) is fixedly connected to the inner wall of the latch opening, one end of the latch rod (402) is fixedly connected to the outer wall of the pull ring (404), and the outer wall of the latch rod (402) is movably connected to the inner wall of the socket.

6. A putty scraper according to claim 2, characterized in that: The cleaning mechanism (5) comprises a stabilizing block (501), a damping block (502), a cleaning plate (503), an extension block (504) and a moving block (505), wherein the outer wall of the stabilizing block (501) is movably connected to the inner walls of the moving groove and the extension slide groove, the bottom end of the stabilizing block (501) is fixedly connected to the top end of the damping block (502), and the outer wall of the damping block (502) is movably connected to the inner walls of the moving groove and the extension slide groove, the top end of the stabilizing block (501) is fixedly connected to the bottom end of the cleaning plate (503), and the outer wall of the cleaning plate (503) is movably connected to the inner wall of the connecting groove, one side of the stabilizing block (501) is fixedly connected to one side of the extension block (504), and the side of the extension block (504) away from the stabilizing block (501) is fixedly connected to one side of the moving block (505), and the outer wall of the extension block (504) is movably connected to the inner walls of the moving opening and the limiting slide opening.