Ash scraping tool for wall surface negative right angle construction

Abstract

The utility model discloses an ash scraping tool for wall surface internal right angle construction, which comprises an internal corner plastering scraper blade, an internal corner plastering scraper blade, an internal corner plastering scraper blade, an external corner plastering scraper blade and an external corner plastering scraper blade, wherein the working end face of the internal corner plastering scraper blade is matched with a wall surface internal right angle to complete ash scraping work; the internal corner prestress reinforcing frame is connected to the non-working end face of the internal corner plastering scraper; one end of the ash scraping tool handle body is connected to the middle of the internal corner prestress reinforcing frame; and the portable handheld piece is connected to the other end of the ash scraping tool handle body and located between the openings of the internal corner plastering scraping plate. The internal corner plastering scraper solves the problem that mortar is prone to cracking in the hardening process, the internal corner plastering scraper adopting the design of the two scraper bodies can ensure that the thickness of a plaster layer is even, and therefore cracks are reduced; meanwhile, by arranging the internal corner prestress reinforcing frame, the shape of the internal corner plastering scraper can be more stable even if the internal corner plastering scraper is used for multiple times of construction, and the plastering process is more uniform and smooth due to the stability of the structure of the internal corner plastering scraper.

Description

Technical Field

[0001] This utility model relates to a plastering tool, specifically a plastering tool for constructing right-angled surfaces on walls. It is mainly used for constructing right-angled surfaces on walls and belongs to the field of building construction tool technology. Background Technology

[0002] Currently, right angles are very difficult to handle during plastering and puttying in buildings. They need to be repaired with iron plates or scrapers, but the corners still cannot achieve a right angle or a straight line. Therefore, the research objective of this patent is to develop a new type of tool that is economical, easy to operate, and acceptable to a wide range of operators. This patent is a plastering tool developed for right angles on walls.

[0003] Traditional wall corner construction involves using a trowel to create and press the corner into shape. This method has the following drawbacks: the mortar is not dense, the depth is inconsistent, the corner is not a right angle, and the corner lines are not straight, which affects the visual effect and requires a high level of skill from the construction workers.

[0004] Because at the inner corner (concave corner) of the wall, where two walls meet, unevenness is easily produced, and unevenness or bumps are likely to occur during plastering.

[0005] While specialized tools for plastering inside corners are available on the market, existing traditional tools for plastering inside right angles are either too simple in design, making them prone to deformation, especially under high-intensity application, which affects their efficiency and quality. This deformation problem is particularly pronounced in large construction sites or during extended use. More importantly, they lack durability; traditional simple tools are easily worn and deformed under high-intensity or repeated use, resulting in a short tool lifespan. Frequent tool replacements increase construction costs and, more importantly, affect the accuracy of plastering, sometimes even leading to substandard work requiring rework.

[0006] Meanwhile, most existing plastering tools lack a dedicated hanging design for right-angle plastering. On construction sites, many workers simply pile their tools on the ground. When not in use for extended periods or during rainy seasons, these tools are prone to dampness, rust, or damage due to improper storage. Furthermore, during storage, tools are easily scattered or lost on the work site, increasing maintenance and replenishment costs—in short, it's often very inconvenient.

[0007] Therefore, the key to solving the above-mentioned technical problems lies in developing a simple and long-lasting plastering tool for right-angle wall construction. Summary of the Invention

[0008] To address the numerous defects and shortcomings in the aforementioned background technology, this utility model has made improvements and innovations. The aim is to provide a simple, novel, and reasonable corner plastering scraper that solves the problem of mortar cracking during hardening, especially in cases of uneven plastering or inconsistent thickness. This scraper, employing a two-blade design, ensures uniform plaster layer thickness, thereby reducing crack formation. Furthermore, by incorporating a prestressed reinforcing frame at the corner, the shape of the corner plastering scraper becomes more stable even after multiple uses. This structural stability makes the plastering process more uniform and smooth. During corner plastering, the scraper can more precisely apply plaster along the wall corner, improving work accuracy and preventing uneven plaster layer caused by scraper deformation. By enhancing the structural strength of the scraper, damage caused by frequent use or high-intensity construction can be effectively reduced, extending the service life of the corner plastering scraper.

[0009] To solve the above problems and achieve the above-mentioned invention objectives, this utility model provides a plastering tool for right-angle wall construction, which is achieved by adopting the following design structure and the following technical solution:

[0010] As an improvement of the plastering tool for right-angle wall construction according to this utility model, it includes:

[0011] The working end face of the corner plastering scraper (1) is used to contact the right angle of the wall (5) to complete the plastering work.

[0012] The corner prestressing reinforcement frame (2) is connected to the non-working end face of the corner plastering scraper (1) to improve the strength and durability of the plastering tool;

[0013] The scraper tool handle (3) has one end connected to the middle of the internal corner prestressed reinforcement frame (2);

[0014] Portable handle (4) is connected to the other end of the scraper handle (3) and is located between the openings of the corner scraper (1) for the operator to hold and complete the scraping work.

[0015] As an improvement of the present invention, the corner plastering scraper (1) includes:

[0016] The first internal corner scraper (11) and the second internal corner scraper (12) are fixedly connected as a whole, and the working end face is adapted to the wall internal right angle (5);

[0017] The second internal corner scraper (12) and the first internal corner scraper (11) are arranged in a symmetrical structure and are connected to each other. The non-working end faces of the second internal corner scraper (12) and the first internal corner scraper (11) form an opening.

[0018] As a further improvement of the present invention, the first internal corner scraper (11) and the second internal corner scraper (12) have the same shape and structure, both being plate-shaped components with a right-angled trapezoidal structure, and the first internal corner scraper (11) and the second internal corner scraper (12) are connected to each other to form an included angle α, which is 90°.

[0019] As a further improvement of the present invention, the prestressed reinforcement frame (2) at the inside corner is a diamond-shaped hollow support frame formed by connecting and assembling several rod-shaped components arranged horizontally and vertically to each other.

[0020] As a further improvement of the present invention, the rod-shaped component is a steel bar of varying lengths.

[0021] As a further improvement of the present invention, the scraper handle (3) is a component that is bent from a rod-shaped component and is in the shape of an "L" or a "sickle".

[0022] As a further improvement of the present invention, the handle (3) of the scraping tool is a fixed rod or a telescopic rod; the rod-shaped component is a steel bar.

[0023] As a further improvement of the present invention, the portable handle (4) is a columnar component, and the scraper handle (3) is inlaid or sleeved on the portable handle (4).

[0024] A hanging plate (42) is provided at the free end of the portable handle (4), and a hanging hole (421) is provided on the front and back sides of the hanging plate (42) for easy storage and hanging.

[0025] As a further improvement of the present utility model, a protective sleeve (41) is provided on the outer surface of the portable holding piece (4). The protective sleeve (41) is a rubber sleeve, and several rubber protective protrusions with an integral structure are provided on the outer surface of the rubber sleeve.

[0026] The suspension plate (42) is a flat plate-shaped component. The fixed end of the flat plate-shaped component is vertically connected to the middle of the free end of the portable hand-held component (4). The end of the flat plate-shaped component is set as an arc segment.

[0027] The suspension hole (421) is elliptical, triangular, circular or square in shape, and the suspension hole (421) is opened on both sides of the free end edge of the suspension plate (42).

[0028] As a further improvement to the present invention, the outer surfaces of the corner plastering scraper (1), the corner prestressed reinforcement frame (2), the scraper tool handle (3), and the portable handle (4) are sequentially provided with an injection molding layer, an anti-rust layer, a waterproof layer, and a warning layer from the inside to the outside, and the warning layer is coated with fluorescent powder.

[0029] The working principle is as follows: Before using the above-mentioned plastering tool for right-angle wall construction, the construction personnel only need to manually or with appropriate handling equipment move the tool to the designated location for use.

[0030] When using it, it should be used in conjunction with the right angle (5) of the wall surface that needs to be constructed. During construction, the construction personnel should first clean up the garbage or dirt at the right angle (5) of the wall surface and wet it with water; then, the right angle (5) of the wall surface should be filled with mortar or fine stone concrete that needs to be smoothed. Place the mortar or fine stone concrete at the right angle (5) of the wall. Before the mortar or fine stone concrete sets, the operator holds the portable handle (4) and places the plastering tool body (1) at the right angle, so that the plastering scraper (1) is aligned with the mortar or fine stone concrete at the right angle (5) of the wall. Then, pull the portable handle (4) and apply a little force in one direction to scrape the mortar or fine stone concrete at the right angle (5) of the wall into shape, forming a smooth mortar joint with rounded joints and tight mortar. After the construction of the right angle (5) of the wall is completed, inspect and accept it. After passing the inspection, proceed to the next process. Continue to construct the next right angle (5) of the wall according to the above construction method.

[0031] Finally, as time goes by, once all the construction work is completed, the construction workers only need to clean and repair the utility model, and then transport it to the designated tool storage warehouse for storage using appropriate handling equipment or manually, so that it can be reused next time.

[0032] In the above construction process, if the mortar or fine stone concrete at the right angle (5) of the wall cannot be formed in one go, the construction personnel can continue to repeatedly trowel and press the mortar or fine stone concrete at the right angle (5) of the wall to form the shape.

[0033] The beneficial effects of this utility model compared with the prior art are:

[0034] 1. This utility model has a simple design structure and is easy to operate. It is a widely accepted tool that can effectively improve the construction quality of right angles, speed up the construction progress, and save resources and costs.

[0035] 2. This utility model solves the problem that unevenness is easily generated at the inner corner (concave corner) of the wall due to the intersection of two walls. By using the inner corner plastering scraper with the design structure of this utility model, the plastering layer at the corner can be effectively ensured to be flat, avoiding unevenness or bumps.

[0036] 3. This utility model designs the inside corner plastering scraper as two pieces composed of a first inside corner scraper and a second inside corner scraper. By using the inside corner plastering scraper composed of two scrapers, it helps to achieve precise angles and thicknesses when plastering. This solves the problem that the inside corners of the wall are easily affected by impacts and wear. This design can enhance the durability and impact resistance of the wall corners and extend the service life of the inside right angles of the wall surface.

[0037] 4. This utility model solves the problem of cracks easily generated in mortar during the hardening process by using a plastering scraper composed of two scrapers, especially when the plastering is uneven or the thickness is inconsistent. The design of the two scrapers can ensure that the plaster layer thickness is uniform, thereby reducing the occurrence of cracks.

[0038] 5. Because the first and second internal corner scrapers of this utility model are set at a 90° angle, it is easier to accurately process internal corners. In this way, construction workers can more easily control the scraper angle during construction, which helps them control the smoothness and flatness of the plaster layer, avoid common construction defects, and improve construction efficiency and accuracy;

[0039] 6. This utility model, due to the inclusion of a prestressed reinforcement frame for the internal corners, effectively improves the overall strength and stability of the internal corner plastering scraper by applying prestress. This prevents the internal corner plastering scraper from deforming or bending due to external forces during use, ensuring that the scraper maintains a stable shape and angle during plastering and guaranteeing construction quality.

[0040] 7. Under high pressure or long-term use, the corner plastering scraper may deform due to long-term load or high temperature environment. This utility model can enhance the deformation resistance of the corner plastering scraper by setting the corner prestressing reinforcement frame, ensuring its accuracy and reliability during use; and the corner prestressing reinforcement frame provides additional support and stability, which makes the corner plastering scraper easier to operate, reducing the strength and operation difficulty required by construction workers in the plastering process, thereby improving work efficiency and reducing labor intensity.

[0041] 8. By setting up a prestressed reinforcement frame for the inside corner, the shape of the inside corner plastering scraper will be more stable even after multiple constructions. The stability of the inside corner plastering scraper structure makes the plastering process more uniform and smooth. In this way, when plastering inside corners, the inside corner plastering scraper can more accurately plaster along the corner of the wall, thereby improving the work accuracy and avoiding uneven plastering layer caused by deformation of the inside corner plastering scraper. By enhancing the structural strength of the inside corner plastering scraper, damage caused by frequent use or high-intensity construction can be effectively reduced, and the service life of the inside corner plastering scraper can be extended.

[0042] 9. Because the handheld part of the portable handle is covered with a protective sleeve, this utility model can protect the operator's hands from wear and tear during long-term work, thus ensuring construction safety.

[0043] 10. This utility model facilitates hanging, storage, and safekeeping of tools. Tools can be hung on the wall or tool rack through the hanging holes, saving storage space and avoiding damage caused by tools being placed haphazardly. This allows tools to be conveniently hung in the required position, enabling construction workers to quickly retrieve and adjust tools, reducing unnecessary time waste and improving construction efficiency.

[0044] 11. The exterior of this utility model is coated with anti-rust paint and a waterproof layer, which can prevent rusting and extend the service life of the entire device. It is environmentally friendly and saves resources. At the same time, the exterior of the device is coated with a self-luminous fluorescent material, which can clearly mark the location of the laying device at night or in dark indoor or underground construction environments. It can effectively play a safety warning role, improve visibility, make it easy for people to identify, and increase safety in construction and life. Attached Figure Description

[0045] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0046] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0047] Figure 2 This is one of the overall structural schematic diagrams of this utility model;

[0048] Figure 3 This is the second schematic diagram of the overall structure of this utility model;

[0049] Figure 4 This is the third schematic diagram of the overall structure of this utility model;

[0050] Figure 5 This is the fourth schematic diagram of the overall structure of this utility model;

[0051] Figure 6This is the fifth schematic diagram of the overall structure of this utility model;

[0052] Figure 7 This is the sixth schematic diagram of the overall structure of this utility model;

[0053] Figure 8 This is a schematic diagram of the overall structure of another design of this utility model;

[0054] In the figure, the numbers are: 1—corner plastering scraper, 11—first corner scraper, 12—second corner scraper;

[0055] 2—Corner prestressed reinforcement frame;

[0056] 3—Handle of the scraper tool;

[0057] 4—Portable handle, 41—Protective cover, 42—Hanging plate, 421—Hanging hole;

[0058] 5—Cornered right angle on the wall. Detailed Implementation

[0059] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0060] Example 1

[0061] As per the instruction manual Figure 1 To the instruction manual Figure 7 As shown, a plastering tool for applying plaster to right angles on a wall includes:

[0062] The working end face of the internal corner plastering scraper 1 is used to contact the internal right angle 5 of the wall surface and work together to complete the plastering work.

[0063] The prestressed reinforcement frame 2 for inside corners is connected to the non-working end face of the plastering scraper 1 for inside corners, and is used to improve the strength and durability of the plastering tool.

[0064] The handle 3 of the scraper tool is connected at one end to the middle of the prestressed reinforcing frame 2 at the inside corner;

[0065] Portable handle 4 is connected to the other end of the scraper tool handle 3 and is located between the openings of the corner scraper 1, for the operator to hold and complete the scraping work.

[0066] Furthermore, such as Figure 2 and Figure 3as well as Figure 6 As shown, the corner plastering scraper 1 includes:

[0067] The first internal corner scraper 11 and the second internal corner scraper 12 are fixedly connected as a whole, and the working end face is adapted to the wall internal right angle 5.

[0068] The second internal corner scraper 12 is arranged in a symmetrical structure with the first internal corner scraper 11 connected to each other, and the non-working end faces of the second internal corner scraper 12 and the first internal corner scraper 11 form an opening.

[0069] Specifically, such as Figure 7 As shown, the first corner scraper 11 and the second corner scraper 12 have the same shape and structure. They are both plate-shaped components with a right-angled trapezoidal structure, and the first corner scraper 11 and the second corner scraper 12 are connected to each other to form an included angle α, which is 90°.

[0070] Furthermore, such as Figure 2 and Figure 3 as well as Figure 6 As shown, the prestressed reinforcement frame 2 at the inside corner is a diamond-shaped hollow support frame assembled from several rod-shaped components arranged horizontally and vertically to each other.

[0071] Specifically, the rod-shaped component is a steel bar of varying lengths.

[0072] Furthermore, such as Figures 3 to 5 As shown, the scraper handle 3 is an L-shaped or sickle-shaped component formed by bending a rod-shaped component.

[0073] Specifically, the handle 3 of the scraping tool is a fixed rod or a telescopic rod; the rod-shaped component is a steel bar.

[0074] Furthermore, such as Figure 2 and Figure 4 as well as Figure 7 As shown, the portable handle 4 is a columnar component, and the scraper handle 3 is embedded or sleeved on the portable handle 4.

[0075] During construction, the 5 inside right angles of the wall should be filled with mortar or fine stone concrete that needs to be smoothed beforehand, that is, the mortar or fine stone concrete should be placed at the 5 inside right angles of the wall.

[0076] During construction, such as Figure 1As shown, before the mortar or fine aggregate concrete initially sets, the operator holds the portable handle 4 and places the plastering tool body 1 at the inside right angle, aligning the inside corner plastering scraper 1 with the mortar or fine aggregate concrete at the inside right angle 5 of the wall. Then, the operator pulls the portable handle 4 with a little force in one direction to scrape the mortar or fine aggregate concrete at the inside right angle 5 of the wall into a smooth, consistent mortar joint, with the joint rounded and the mortar tight.

[0077] Example 2

[0078] This embodiment 2 is the same as embodiment 1, except that, as Figure 5 and Figure 6 As shown, a protective sleeve 41 is fitted on the outer surface of the portable grip 4. The protective sleeve 41 is a rubber sleeve, and several integrated rubber protective protrusions are provided on the outer surface of the rubber sleeve.

[0079] Specifically, the protective sleeve 41 is a rubber sleeve, and several integrated rubber protective protrusions are provided on the outer surface of the rubber sleeve. These rubber protective protrusions are granular or annular protrusions.

[0080] In this embodiment 2, since a protective cover is provided on the handheld part of the portable handle 4, it can protect the operator's hands from wear and tear during long-term work, thus ensuring construction safety.

[0081] Other uses are the same as in Example 1, and will not be repeated here.

[0082] Example 3

[0083] This embodiment 3 is the same as embodiment 1 and embodiment 2, except that, as Figure 8 As shown, a hanging plate 42 extends from the free end of the portable handle 4, and a hanging hole 421 is provided on the front and back of the hanging plate 42 for easy storage and hanging.

[0084] Specifically, the suspension plate 42 is a flat plate-shaped component, the fixed end of which is vertically connected to the middle of the free end of the portable handle 4, and the end of the flat plate-shaped component is set as an arc segment.

[0085] The suspension hole 421 is elliptical, triangular, circular or square in shape, and the suspension hole 421 is opened on both sides of the free end edge of the suspension plate 42.

[0086] When using this embodiment 3, tools can be hung on the wall or tool rack through the hanging holes 421 on the hanging plate 42 when storing them. This allows construction workers to quickly retrieve and adjust the tools, reducing unnecessary time waste and improving construction efficiency.

[0087] Example 4

[0088] This embodiment 4 is the same as that of embodiments 1, 2 and 3, except that an injection molding layer, an anti-rust layer, a waterproof layer and a warning layer are sequentially provided from the inside to the outside on the outer surfaces of the corner plastering scraper 1, the corner prestressed reinforcement frame 2, the plastering tool handle 3 and the portable handle 4, and the warning layer is coated with fluorescent powder.

[0089] Specifically, a wear-resistant polymer material is injection molded onto the injection-molded layer; the anti-rust layer includes an epoxy zinc-rich primer and a chlorinated rubber topcoat, as well as an epoxy micaceous iron oxide intermediate coat located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the waterproof layer is a polyurethane waterproof coating; and the warning layer is a reflective warning tape, reflective film, or reflective paint of a single color or a mixture of multiple colors.

[0090] In this embodiment 4, because the exterior of the device is coated with anti-rust paint and a waterproof layer, rust can be prevented during implementation, thus extending the service life of the entire device. This achieves environmental protection and saves resources. At the same time, the exterior of the device is coated with a self-illuminating fluorescent material, which can clearly mark the location of the laying device at night, in dark indoor environments, or in underground construction environments. This effectively serves as a safety reminder, increases visibility, makes it easy for people to identify, and increases safety in construction and daily life.

[0091] Other uses are the same as in Examples 1, 2 and 3, and will not be repeated here.

[0092] Meanwhile, in this utility model, all connections referred to are fixed connections, movable connections, or detachable connections. Among them, fixed connections are welded connections or directly processed into an integral structure; movable connections, detachable connections, or split structures are hinged connections, internal and external threaded connections, bayonet connections, plug-in sleeves, bolt assembly connections, or screw connections.

[0093] In summary, a more specific embodiment of this utility model is as follows:

[0094] Before using the above-mentioned plastering tool for right-angle wall construction, the construction personnel only need to manually or with appropriate handling equipment move the tool to the designated location for use.

[0095] When using it, it should be applied to the wall surface at a right angle of 5.

[0096] The specific construction steps are as follows:

[0097] Step 1: During construction, the workers first clean up any trash or dirt at the five right angles of the wall and then wet the area with water.

[0098] Step 2: Fill the 5-degree angle of the wall with mortar or fine aggregate concrete that needs to be smoothed. That is, place the mortar or fine aggregate concrete at the 5-degree angle of the wall.

[0099] Step 3, as follows Figure 1 As shown, before the mortar or fine stone concrete initially sets, the operator holds the portable handle 4 and places the plastering tool body 1 at the inside right angle, so that the inside corner plastering scraper 1 is aligned with the mortar or fine stone concrete at the inside right angle 5 of the wall. Then, the operator pulls the portable handle 4 with a little force in one direction to scrape the mortar or fine stone concrete at the inside right angle 5 of the wall into shape, forming a smooth and consistent inside corner with rounded joints and tight mortar.

[0100] Step 4: After the construction of the right angle 5 on the wall is completed, conduct an inspection and acceptance. If it passes the inspection, proceed to the next process. Continue to construct the next right angle 5 on the wall according to the above construction method.

[0101] Step 5. Finally, as time goes by, once all the construction work is completed, the construction workers only need to clean and repair the utility model, and then transport it to the designated tool storage warehouse for storage using appropriate handling equipment or manually, so that it can be reused next time.

[0102] During the aforementioned construction process, if the mortar or fine aggregate concrete at the right angle 5 on the wall cannot be formed in one application, the construction worker can continue to repeatedly trowel and press the mortar or fine aggregate concrete at the right angle 5 on the wall until it is formed. In repeated use, due to the prestressed reinforcement frame for the inside corner, this utility model enhances the deformation resistance of the inside corner plastering scraper, ensuring its accuracy and reliability during use. Furthermore, the prestressed reinforcement frame provides additional support and stability, making the inside corner plastering scraper easier to operate and reducing the time and effort required by the construction worker during the plastering process. On the one hand, by reducing the force and difficulty of operation, the work efficiency is improved and the labor intensity is reduced; on the other hand, by setting up a prestressed reinforcement frame for the inside corner, the shape of the inside corner plastering scraper will be more stable even after multiple constructions. The stability of the inside corner plastering scraper structure makes the plastering process more uniform and smooth. In this way, when plastering inside corners, the inside corner plastering scraper can be plastered more accurately along the corner, thereby improving the work accuracy and avoiding uneven plastering layer caused by deformation of the inside corner plastering scraper. By enhancing the structural strength of the inside corner plastering scraper, damage caused by frequent use or high-intensity construction can be effectively reduced, and the service life of the inside corner plastering scraper can be extended.

[0103] Finally, it should be noted that the specific embodiments of this utility model have been described in detail above with reference to the accompanying drawings. However, this utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made to it.

Claims

1. A plastering tool for applying plaster to right angles on walls, characterized in that, The utility model relates to a wall corner plastering tool, which comprises: a wall corner plastering scraper (1), the working end face of the wall corner plastering scraper (1) is used for contacting and matching the wall corner (5) to complete the plastering work; a wall corner prestressed reinforcing frame (2), the wall corner prestressed reinforcing frame (2) is connected to the non-working end face of the wall corner plastering scraper (1), and is used for improving the strength and durability of the plastering tool; a plastering tool handle body (3), one end of the plastering tool handle body (3) is connected to the middle part of the wall corner prestressed reinforcing frame (2); a portable hand-held piece (4), the portable hand-held piece (4) is connected to the other end of the plastering tool handle body (3) and is located between the openings of the wall corner plastering scraper (1), and is used for the operator to complete the plastering work by hand.

2. The trowel according to claim 1, wherein The wall corner plastering scraper (1) comprises: a first wall corner scraper (11), the first wall corner scraper (11) is fixedly connected with a second wall corner scraper (12) to form an integral whole, and the working end face is matched with the wall corner (5); the second wall corner scraper (12) is arranged in opposite connection with the first wall corner scraper (11) to form a symmetrical structure, and the non-working end face of the second wall corner scraper (12) and the first wall corner scraper (11) forms an opening.

3. A trowel for use in the construction of internal and external corners of a wall, according to claim 2, wherein: The first wall corner scraper (11) and the second wall corner scraper (12) have the same shape structure and are both plate-shaped body members in the shape of a right-angled trapezoid, and the first wall corner scraper (11) and the second wall corner scraper (12) are connected to form an included angle alpha, and the included angle alpha is 90 degrees.

4. The trowel for a corner construction of a wall according to claim 1, wherein The wall corner prestressed reinforcing frame (2) is a rhombic hollow support formed by a plurality of rod-shaped body members arranged in the horizontal and vertical directions.

5. A trowel for use in the construction of internal and external corners of a wall, according to claim 4, wherein: The rod-shaped body members are steel bars of different lengths.

6. The trowel for interior corner finishing according to claim 1, wherein The plastering tool handle body (3) is a component in the shape of an "L" or a "sickle" formed by bending a rod-shaped body member.

7. A trowel for use in the construction of internal and external corners of a wall, according to claim 6, wherein: The plastering tool handle body (3) is a fixed rod or a telescopic rod, and the rod-shaped body member is a steel bar.

8. The trowel for interior corner finishing according to claim 1, wherein The portable hand-held piece (4) is a columnar body member, and the plastering tool handle body (3) is embedded in or sleeved on the portable hand-held piece (4). A hanging plate (42) is arranged at the free end of the portable hand-held piece (4), and a hanging hole (421) is formed through the front and back surfaces of the hanging plate (42) for conveniently hanging.

9. The trowel tool for use in the construction of inside and outside corners of a wall surface according to claim 8, wherein A protective sleeve (41) is sleeved on the outer surface of the portable hand-held piece (4), and the protective sleeve (41) is a rubber sleeve, and a plurality of rubber protective protrusions in a connected structure are arranged on the outer surface of the rubber sleeve. The hanging plate (42) is a flat plate-shaped body member, the fixed end of the flat plate-shaped body member is perpendicularly connected to the middle part of the free end of the portable hand-held piece (4), and the end part of the flat plate-shaped body member is provided in the shape of a circular segment. The hanging hole (421) is in the shape of an ellipse, a triangle, a circle or a square, and the hanging hole (421) is formed through the front and back surfaces of the edge of the free end of the hanging plate (42).

10. The trowel tool for use in the construction of inside and outside corners of a wall surface according to claim 1, wherein The outer surfaces of the wall corner plastering scraper (1), the wall corner prestressed reinforcing frame (2), the plastering tool handle body (3) and the portable hand-held piece (4) are sequentially provided with an injection molding layer, an anti-rust layer, a waterproof layer and a warning layer, and the warning layer is coated with fluorescent powder.

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