Epitaxial assembly type multi-degree-of-freedom cleaning and scraping device at window

Abstract

The utility model discloses an extension assembly type multi-degree-of-freedom cleaning and scraping device at a window. When a high-rise or multi-layer high-rise outer wall of a building is repaired, a large number of supporting components are arranged on the outer wall, and construction is tedious. A supporting track is arranged between two supporting lifting single bodies, the two ends of the supporting track are detachably connected with the two supporting lifting single bodies respectively, the supporting track is driven by the two supporting lifting single bodies to do lifting reciprocating motion, and a self-driving moving frame is arranged on the supporting track. The trimming part is arranged on the side, facing the building outer wall, of the self-driven moving frame in a penetrating mode, and the self-driven moving frame drives the trimming part to reciprocate in the length direction of the supporting rail; a power output shaft of the motor penetrates through the n-shaped frame body to be connected with the transmission wheel, the transmission wheel is rolled on the supporting rail, and the transmission wheel rotates to drive the n-shaped frame body to move in a reciprocating mode in the length direction of the supporting rail.

Description

Technical Field

[0001] The utility model specifically relates to an extended assembled multi-degree-of-freedom scraping device for windows, belonging to the technical field of building renovation tools. Background Art

[0002] As part of the building structure, building exterior walls play a vital role in protecting and decorating the building. However, due to long-term exposure to the elements, exterior walls are susceptible to damage and aging from various factors. Therefore, regular exterior wall maintenance is essential. First, before any repairs are performed, the exterior walls must be cleaned. Cleaning removes dirt and old paint, paving the way for subsequent repairs. After cleaning, minor repairs can be performed on the exterior walls, such as filling cracks, repairing leaks, and replacing broken bricks. When choosing exterior wall paint, consider the building's characteristics and needs. When applying exterior wall paint, pay attention to the thickness and uniformity of the paint to avoid color variations and cracking. Severely damaged exterior walls require repair and reinforcement. Reinforcement involves adding reinforcing materials such as rebar and steel plates to enhance the wall's load-bearing capacity and stability. Repair and reinforcement work should be performed by professionals to ensure quality and safety, and the associated costs constitute a significant portion of maintenance expenses.

[0003] During the repair of exterior walls, the removal of wall skin is an indispensable part of the building maintenance and repair process. However, when repairing the exterior walls of high-rise or multi-story buildings, many supporting components are arranged on the exterior walls and the construction is cumbersome. Construction workers have to rely on external suspension to hang on the exterior walls of high-rise buildings, which can easily cause safety hazards. Many lifting equipment are required, and the range of movement is limited. Once the lifting equipment is used for local treatment of the exterior wall, the cost is too high, resulting in the failure to promptly deal with local damage to the exterior wall. Utility Model Content

[0004] The purpose of the utility model is to provide a window extension assembled multi-degree-of-freedom scraping device for solving the above-mentioned problems.

[0005] A window extension-assembled multi-degree-of-freedom scraping device comprises a self-propelled moving frame, a trimming piece, a support rail, and two support lifting units. The two support lifting units are vertically arranged in parallel, the support rail is arranged between the two support lifting units, and the two ends of the support rail are detachably connected to the two support lifting units. The support rail performs a lifting and reciprocating motion driven by the two support lifting units. The self-propelled moving frame is arranged on the support rail, and the trimming piece is inserted on the side of the self-propelled moving frame facing the outer wall of the building. The self-propelled moving frame drives the trimming piece to reciprocate along the length direction of the support rail.

[0006] The self-driven moving frame includes a U-shaped frame body, a motor and a transmission wheel. The transmission wheel is arranged in the U-shaped frame body. The motor is fixedly connected to the outer side wall of the U-shaped frame body. The power output shaft of the motor passes through the U-shaped frame body and is connected to the transmission wheel. The transmission wheel rolls on the support rail. The rotation of the transmission wheel drives the U-shaped frame body to move back and forth along the length direction of the support rail.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] The utility model can repair the exterior wall of a high-rise or multi-story building through the cooperation between a self-propelled moving frame, a trimming piece, a support rail and two supporting lifting units. Construction workers use two windows 21 closest to the position of the wall to be repaired as basic support positions, and thus arrange the utility model on the exterior wall of the building through assembly. The trimming piece makes a reciprocating sliding motion along the length direction of the support rail under the drive of the self-propelled moving frame, thereby ensuring that the area where the exterior wall is to be cleaned can be scraped flat and evenly, providing safety protection for construction workers during the process of trimming the exterior wall of the building, and can also reduce maintenance costs, facilitate timely repairs, and curb the deterioration of wall cracks or warping. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] For ease of explanation, the present invention is described in detail with reference to the following specific embodiments and accompanying drawings.

[0010] Figure 1 This is a side structural diagram of the present utility model;

[0011] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 3 A schematic diagram of the three-dimensional structure of the connection relationship between the self-propelled moving frame, the trimming member and the support rail;

[0013] Figure 4 Schematic diagram of the three-dimensional structure of the trimming piece;

[0014] Figure 5 This is a three-dimensional structural diagram of the connection relationship between the upper track bar, lower guide bar and insert plate in the support track. The figure only shows one insert plate and part of the length of the upper track bar and lower guide bar;

[0015] Figure 6 It is a top view structural diagram of the connection relationship between the slider and the connecting plate in the linear slide;

[0016] Figure 7 A side structural diagram illustrating the connection relationship between the self-propelled moving frame, the trimming member, and the support rail;

[0017] Figure 8This is a usage state diagram of the present utility model on the exterior wall of a building;

[0018] Figure 9 is Figure 3 the enlarged structural schematic diagram of part A in

[0019] Figure 10 is Figure 7 the enlarged structural schematic diagram of part B in

[0020] Figure 11 is Figure 7 the enlarged structural schematic diagram of part C in

[0021] In the figure: 1 - self - driving moving frame; 1 - 1 - U - shaped frame body; 1 - 2 - motor; 1 - 3 - driving wheel; 2 - trimming part; 2 - 1 - supporting inserting plate; 2 - 2 - blade; 3 - supporting track; 3 - 1 - upper track bar; 3 - 2 - lower guiding bar; 3 - 3 - inserting plate; 3 - 4 - strip - shaped notch; 3 - 5 - rack; 4 - supporting lifting unit; 4 - 1 - linear slide; 4 - 1 - 1 - slider; 4 - 2 - rear supporting rod; 4 - 3 - support; 4 - 4 - connecting plate; 4 - 4 - 1 - slot; 4 - 4 - 2 - vertical notch; 5 - upper sliding groove; 6 - lower sliding groove; 7 - first convex rib; 8 - second convex rib; 9 - square jack; 10 - inserting seam; 11 - guard plate; 12 - counterweight; 20 - exterior wall of the building; 21 - window. Detailed implementation manners

[0022] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be described below through specific embodiments shown in the drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have technical substantial significance. Any modification of the structure, change in the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. In addition, in the following description, the descriptions of well - known structures and technologies are omitted to avoid unnecessarily confusing the concept of the present utility model.

[0023] Here, it should also be noted that in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, while other details less related to the present utility model are omitted.

[0024] Detailed implementation manner one: Combine with Figure 1 , Figure 2 , Figure 3 , Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 、 Figure 10 and Figure 11 Explain this embodiment. The multi-degree-of-freedom mobile device assembled outside the window in this embodiment is suitable for peeling off the shallow wall skin that is warped or has other minor problems on the exterior wall 20 of the building. The peeling effect is uniform and unified. It specifically includes a self-propelled moving frame 1, a trimming piece 2, a support rail 3 and two supporting lifting units 4. The two supporting lifting units 4 are vertically arranged in parallel, and the support rail 3 is arranged between the two supporting lifting units 4. The two ends of the support rail 3 are detachably connected to the two supporting lifting units 4 respectively. The support rail 3 makes a lifting and reciprocating motion under the drive of the two supporting lifting units 4. The self-propelled moving frame 1 is arranged on the support rail 3, and the trimming piece 2 is inserted on the side of the self-propelled moving frame 1 facing the exterior wall 20 of the building. The self-propelled moving frame 1 drives the trimming piece 2 to reciprocate along the length direction of the support rail 3;

[0025] In this embodiment, the self-driven moving frame 1 includes a U-shaped frame body 1-1, a motor 1-2 and a transmission wheel 1-3. The transmission wheel 1-3 is arranged in the U-shaped frame body 1-1. The transmission wheel 1-3 is a gear. The motor 1-2 is fixedly connected to the outer wall of the U-shaped frame body 1-1. The power output shaft of the motor 1-2 passes through the U-shaped frame body 1-1 and is connected to the transmission wheel 1-3. The transmission wheel 1-3 rolls on the support rail 3. The rotation of the transmission wheel 1-3 drives the U-shaped frame body 1-1 to move back and forth along the length direction of the support rail 3.

[0026] The working principle of the self-propelled moving frame 1 in this embodiment is that the motor 1-2 on the self-propelled moving frame 1 is started, the transmission wheel 1-3 rolls on the support rail 3, and the transmission wheel 1-3 rotates to drive the U-shaped frame body 1-1 to move back and forth along the length direction of the support rail 3.

[0027] Furthermore, a trimming piece 2 is provided on the self-propelled moving frame 1, and the self-propelled moving frame 1 is set on the support rail 3. During the period when the two supporting lifting units 4 are sliding up or down, the self-propelled moving frame 1 drives the trimming piece 2 to slide back and forth along the length direction of the support rail 3 through the motor 1-2, thereby ensuring that when repairing the wall, the wall is cleaned and flattened by the trimming piece 2, and it slides back and forth during the cleaning process, and the cleaning area is comprehensive and tidy.

[0028] Specific embodiment 2: This embodiment is a further limitation of specific embodiment 1. The support rail 3 is a dual-position support rail structure. The support rail 3 includes an upper rail bar 3-1, a lower guide bar 3-2 and two plug-ins 3-3. The plug-ins 3-3 are arranged in a one-to-one correspondence with the support lifting units 4. Each plug-in plate 3-3 is detachably connected to its corresponding support lifting unit 4. The two plug-ins 3-3 are arranged vertically in parallel. The upper rail bar 3-1 and the lower guide bar 3-2 are horizontally arranged between the two plug-ins 3-3 from top to bottom. The upper rail bar 3-1 is processed with a strip notch 3-4 along its length direction, and a rack 3-5 is arranged in the strip notch 3-4. The length direction of the rack 3-5 is in the same direction as the length direction of the strip notch 3-4, and the rack 3-5 is engaged with the transmission wheel 1-3.

[0029] Furthermore, the construction workers place the two supporting lifting units 4 on the building's outer wall 20 through the two windows 21, and then respectively set the upper track bar 3-1 and the lower guide bar 3-2 on the supporting lifting units 4 through the two plug-in plates 3-3, so that when cleaning the wall skin, the motor 1-2 on the self-propelled moving frame 1 can drive the trimming piece 2 to slide on the upper track bar 3-1 and the lower guide bar 3-2, ensuring the flatness of the wall during the cleaning process, avoiding the construction workers from using external suspension for cleaning, and improving the safety performance during use.

[0030] Specific embodiment three: This embodiment is a further limitation of specific embodiment two. Each supporting lifting unit 4 includes a linear slide 4-1, a rear support rod 4-2, a support 4-3 and a connecting plate 4-4. The linear slide 4-1 is vertically arranged, and the side of the linear slide 4-1 facing the room is connected to the support 4-3 through the rear support rod 4-2. A connecting plate 4-4 is provided on the slider 4-1-1 of the linear slide 4-1, and a slot 4-4-1 for matching the plug plate 3-3 is processed on the side of the connecting plate 4-4 facing the slider 4-1-1.

[0031] The main structure of linear slide 4-1 in this embodiment is identical to that of existing linear slides, and its operating principle is the same. The difference is that linear slide 4-1 is also equipped with side panels, which form an L-shaped support structure with the bottom plate of the linear slide. When linear slide 4-1 is vertically installed, the side panels increase the contact area with rear support rod 4-2, improving the connection strength. The top side of the side panels is lower than the position of slider 4-1-1 and does not affect the movement of slider 4-1-1.

[0032] In this embodiment, the rear support rod 4-2 is an L-shaped rod body, and a support 4-3 is provided at its vertical end. The support 4-3 is grounded indoors or fixed to other fixed objects indoors.

[0033] Furthermore, the horizontal end of the rear support rod 4-2 may also be provided with another support 4-3 to enhance the positioning strength of the linear slide 4-1 itself.

[0034] Furthermore, the side of the linear slide 4-1 facing the room is connected to the support 4-3 through the rear support rod 4-2, ensuring that construction workers can place the linear slide 4-1 outside the window through the window 21 in the room. A connecting plate 4-4 is provided on the slider 4-1-1, and the upper track bar 3-1 and the lower guide bar 3-2 are connected to the linear slide 4-1 through two plug-in plates 3-3 and slots 4-4-1. The two linear slides 4-1 can be spliced ​​together through the connecting plate 4-4 and the support rail 3, and can also be easily disassembled.

[0035] Specific embodiment four: This embodiment is a further limitation of specific embodiment three. A vertical notch 4-4-2 connected to the slot 4-4-1 is processed on the outer wall of the connecting plate 4-4. When the plug-in plate 3-3 is plugged into its corresponding slot 4-4-1, the lower guide bar 3-2 and the upper track bar 3-1 are sequentially inserted into the vertical notch 4-4-2.

[0036] Furthermore, the lower guide bar 3-2 and the upper track bar 3-1 are connected to each supporting lifting unit 4 through two plug-in plates 3-3 plugged into the connecting plate 4-4, and the plug-in plates 3-3 are plugged into and matched with their corresponding slots 4-4-1, ensuring that the supporting rail 3 can be easily installed with the supporting lifting unit 4 and easy to disassemble, and has stability during use, ensuring that the wall surface of the building exterior wall 20 can be cleaned thoroughly.

[0037] Specific embodiment five: This embodiment is a further limitation of specific embodiments two, three or four. Two upper slide grooves 5 and two lower slide grooves 6 are respectively processed on the inner walls on both sides of the U-shaped frame body 1-1. A lower slide groove 6 is correspondingly arranged under each upper slide groove 5. A first ridge 7 is respectively processed on both sides of the upper track bar 3-1, and the first ridge 7 slides in conjunction with the upper slide groove 5 adjacent to it; a second ridge 8 is respectively processed on both sides of the lower guide bar 3-2, and the second ridge 8 slides in conjunction with the lower slide groove 6 adjacent to it.

[0038] Furthermore, the upper track bar 3-1 is set on the U-shaped frame body 1-1 through the first ridge 7 and two upper sliding grooves 5 to ensure smooth and stable sliding; similarly, the lower guide bar 3-2 is set on the U-shaped frame body 1-1 through the second ridge 8 and two lower sliding grooves 6 to avoid offset during sliding.

[0039] Specific embodiment six: This embodiment further defines specific embodiment two. When the trimming member 2 is a T-shaped scraper, the trimming member 2 includes a support plate 2-1 and a blade 2-2. The support plate 2-1 is vertically arranged. The blade 2-2 is provided on the outer wall of the support plate 2-1 facing the building exterior wall 20. The length direction of the blade 2-2 is the same as the length direction of the support plate 2-1. A square socket 9 for mating with the trimming member 2 is machined on the side wall of the U-shaped frame body 1-1 facing the building exterior wall 20. A slot 10 is machined on the side wall of the square socket 9 facing the building exterior wall 20. The slot 10 is connected to the square socket 9. When the trimming member 2 is connected to the U-shaped frame body 1-1, the trimming member 2 is inserted between the slot 10 and the square socket 9. The slot 10 cooperates with the square socket 9 to provide a plugging position for the trimming member 2, facilitating the rapid replacement of the trimming member 2 if it is damaged.

[0040] Furthermore, a blade 2-2 is provided on one side of the supporting plug plate 2-1, and the supporting plug plate 2-1 and the blade 2-2 are arranged on the U-shaped frame body 1-1 through the insertion slot 10 and the square insertion hole 9, ensuring that when the blade 2-2 is close to the wall surface of the building exterior wall 20, it can drive the trimming piece 2 to slide back and forth on the support rail 3 by starting the motor 1-2 on the U-shaped frame body 1-1, thereby facilitating the cleaning of the flatness of the wall skin. Its working principle is similar to that of similar tools for scraping walls.

[0041] Specific embodiment seven: This embodiment is a further limitation of specific embodiment six. Two guard plates 11 are respectively provided on both sides of the insertion slot 10. One side of each guard plate 11 is fixedly connected to the outer wall of the U-shaped frame body 1-1.

[0042] Furthermore, the two guard plates 11 are clamped on both sides of the blade 2-2 to ensure that when the blade 2-2 comes into contact with the wall during use of the device, the blade 2-2 and the supporting plate 2-1 are prevented from breaking, thereby enhancing the contact area between the blade 2-2 and the supporting plate 2-1, improving the connection strength, and facilitating the long-term cleaning of the wall surface of the building exterior wall 20.

[0043] Specific embodiment eight: This embodiment is a further limitation of specific embodiments one, two, three, four, five, six or seven. A counterweight block 12 that cooperates with the motor 1-2 is provided on the outer wall of the U-shaped frame body 1-1, and the counterweight block 12 is provided below the motor 1-2.

[0044] Furthermore, a motor 1-2 and a counterweight 12 are respectively provided on the outer wall of the U-shaped frame body 1-1 to ensure that the U-shaped frame body 1-1 is in a balanced state. When the self-propelled moving frame 1 drives the trimming piece 2 to slide back and forth along the length direction of the support track 3, the trimming piece 2 can be attached to the surface of the building's exterior wall 20 for cleaning and peeling.

[0045] In this embodiment, there are two connection modes between the self-propelled moving frame 1 and the support rail 3 . One is a fixed installation connection relationship, that is, the self-propelled moving frame 1 is fixedly sleeved on the support rail 3 .

[0046] The other is a plug-in connection method, that is, the self-propelled moving frame 1 uses the notch at its bottom as a socket and is inserted into the support rail 3, thereby facilitating the conversion process of the disassembly and displacement of the utility model.

[0047] The trimming piece 2 in the present invention can also be replaced with other existing detectors or smearing devices to achieve other wall-adhering usage processes.

[0048] The working process of this utility model:

[0049] According to the area of ​​the building exterior wall 20 that needs to be processed, two nearby horizontal windows 21 are selected to arrange the support lifting units 4. The fixed position of each support lifting unit 4 is indoors, that is, the linear slide 4-1 is supported by the rear support rod 4-2 and the support 4-3 in the room so that it is vertically stable outside the window 21. The support rail 3 with the trimming piece 2 and the self-propelled moving frame 1 is connected to the two support lifting units 4 respectively. The trimming piece 2 is driven by the self-propelled moving frame 1 and moves along the length direction of the support rail 3 from the first support lifting unit 4 to the second support lifting unit 4, thereby completing The cleaning process of a horizontal area in the building exterior wall 20 is completed, and then the sliders 4-1-1 in the two supporting lifting units 4 move downward, driving the supporting track 3 with the trimming piece 2 and the self-propelled moving frame 1 to move downward synchronously, and then the self-propelled moving frame 1 is started, and the self-propelled moving frame 1 drives the trimming piece 2 to move along the length direction of the support track 3 from the second supporting lifting unit 4 to the first supporting lifting unit 4, thereby completing the cleaning process of a horizontal area in the building exterior wall 20, and so on, completing the serpentine trailing motion trajectory, thereby completing the cleaning process of an area of ​​the building exterior wall 20 from top to bottom.

[0050] When it comes to cleaning the wall skin at the location of the inclined and warped wall seam, the two sliders 4-1-1 supporting the lifting unit 4 and the self-driven moving frame 1 are started at the same time. The two cooperate to achieve movement at different speeds in the horizontal and vertical directions, and cooperate with the trimming piece 2 to form a cleaning trajectory of an adaptive shape. Specifically, the operation process of the two can be controlled by the existing electronic control program, and the control process is existing technology.

[0051] The above process can also be adapted to the cleaning of wall skin areas with corresponding shapes at irregular cracks.

Claims

1. A window extension assembled multi-degree-of-freedom scraping device, characterized by: It includes a self-driven moving frame (1), a trimming member (2), a support track (3) and two support lifting units (4). The two support lifting units (4) are arranged vertically in parallel. The support track (3) is arranged between the two support lifting units (4). The two ends of the support track (3) are detachably connected to the two support lifting units (4) respectively. The support track (3) makes a reciprocating lifting movement under the drive of the two support lifting units (4). The self-driven moving frame (1) is arranged on the support track (3). The trimming member (2) is arranged on the side of the self-driven moving frame (1) facing the building exterior wall (20). The self-driven moving frame (1) drives the trimming member (2) to reciprocate along the length direction of the support track (3). The self-driven moving frame (1) includes a U-shaped frame body (1-1), a motor (1-2) and a transmission wheel (1-3). The transmission wheel (1-3) is arranged inside the U-shaped frame body (1-1). The motor (1-2) is fixedly connected to the outer side wall of the U-shaped frame body (1-1). The power output shaft of the motor (1-2) passes through the U-shaped frame body (1-1) and is connected to the transmission wheel (1-3). The transmission wheel (1-3) rolls on the support track (3). The rotation of the transmission wheel (1-3) drives the U-shaped frame body (1-1) to reciprocate along the length direction of the support track (3).

2. The window extension assembled multi-degree-of-freedom scraping device according to claim 1, characterized in that: The support track (3) includes an upper track bar (3-1), a lower guide bar (3-2) and two insertion plates (3-3). The insertion plates (3-3) are arranged corresponding to the support lifting units (4) one by one. Each insertion plate (3-3) is detachably connected to its corresponding support lifting unit (4). The two insertion plates (3-3) are arranged vertically in parallel. The upper track bar (3-1) and the lower guide bar (3-2) are horizontally arranged between the two insertion plates (3-3) from top to bottom in sequence. A strip-shaped notch (3-4) is machined along the length direction of the upper track bar (3-1). A rack (3-5) is arranged in the strip-shaped notch (3-4). The length direction of the rack (3-5) is the same as the length direction of the strip-shaped notch (3-4). The rack (3-5) is meshed and cooperated with the transmission wheel (1-3).

3. The window extension assembled multi-degree-of-freedom scraping device according to claim 2, characterized in that: Each support lifting unit (4) includes a linear slide (4-1), a rear support rod (4-2), a support (4-3) and a connecting plate (4-4). The linear slide (4-1) is arranged vertically. The side of the linear slide (4-1) facing the interior is connected to the support (4-3) through the rear support rod (4-2). A connecting plate (4-4) is arranged on the slider (4-1-1) of the linear slide (4-1). A slot (4-4-1) for cooperating with the insertion plate (3-3) is machined on the side of the connecting plate (4-4) facing the slider (4-1-1).

4. The window extension assembled multi-degree-of-freedom scraping device according to claim 3, characterized in that: A vertical notch (4-4-2) communicating with the slot (4-4-1) is machined on the outer wall of the connecting plate (4-4). When the insertion plate (3-3) is inserted and cooperated with its corresponding slot (4-4-1), the lower guide bar (3-2) and the upper track bar (3-1) are sequentially arranged through the vertical notch (4-4-2).

5. The window extension assembled multi-degree-of-freedom scraping device according to claim 2, 3 or 4, characterized in that: On the inner walls of both sides of the U-shaped frame body (1-1), two upper sliding grooves (5) and two lower sliding grooves (6) are respectively machined. One lower sliding groove (6) is correspondingly arranged below each upper sliding groove (5). On both sides of the upper track bar (3-1), a first convex rib (7) is respectively machined, and the first convex rib (7) is in sliding fit with the adjacent upper sliding groove (5); on both sides of the lower guiding bar (3-2), a second convex rib (8) is respectively machined, and the second convex rib (8) is in sliding fit with the adjacent lower sliding groove (6).

6. The window extension assembled multi-degree-of-freedom scraping device according to claim 2, characterized in that: When the trimming part (2) is a T-shaped scraper, the trimming part (2) includes a support insertion plate (2-1) and a blade (2-2). The support insertion plate (2-1) is arranged vertically, and a blade (2-2) is arranged on the outer wall of the support insertion plate (2-1) facing the building exterior wall (20). The length direction of the blade (2-2) is the same as that of the support insertion plate (2-1). On one side wall of the U-shaped frame body (1-1) facing the building exterior wall (20), a square jack (9) for fitting the trimming part (2) is machined. On one side hole wall of the square jack (9) facing the building exterior wall (20), a slot (10) is machined, and the slot (10) is arranged in communication with the square jack (9). When the trimming part (2) is connected to the U-shaped frame body (1-1), the trimming part (2) is inserted between the slot (10) and the square jack (9).

7. The window extension assembled multi-degree-of-freedom scraping device according to claim 6, characterized in that:

8. The window extension-assembled multi-degree-of-freedom scraping device according to claim 1, characterized in that: Two guard plates (11) are respectively arranged in a matching manner on both sides of the slot (10), and one side of each guard plate (11) is fixedly connected to the outer wall of the U-shaped frame body (1-1). On the outer wall of the U-shaped frame body (1-1), a counterweight (12) for matching with the motor (1-2) is arranged, and the counterweight (12) is arranged below the motor (1-2).

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