A plastering device suitable for different angle internal corners

Abstract

This invention provides a plastering device adaptable to inside corners of different angles. In use, the worker operates the device by holding the handle, with the left and right sides of the left and right plastering panels tightly pressed against the two sides of the inside corner for plastering. When the inside corner angle is smaller than the V-shaped angle of this invention, the two sides of the inside corner will press against the left and right plastering panels, causing them to move closer together, compressing the V-shaped angle and reducing its angle. During this process, the arc-shaped elastic telescopic rod is also compressed, and the elasticity of the rod ensures that the left and right plastering panels are tightly pressed against the two sides of the inside corner. The handle is a vertical rod located before the middle of the arc-shaped elastic telescopic rod, always occupying only a small space. This invention can adapt to inside corners of different angles for plastering construction while ensuring construction quality.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to the field of plastering device technology, specifically a plastering device adapted to inside corners of different angles. Background Technology

[0002] Construction refers to the production activities during the implementation phase of an engineering project. It is the process of building various types of structures, or the process of turning the lines on design drawings into a physical object at a designated location. It includes foundation construction, main structure construction, roofing construction, and decoration construction. The site where construction work takes place is called the "construction site" or "building site."

[0003] With the continuous improvement of construction quality, the requirements for the on-site physical quality of civil buildings are becoming increasingly strict. With the changes in architectural aesthetics, the styling characteristics of the structure itself are becoming increasingly prominent. As a prerequisite for surface layer construction, plastering construction has always occupied a relatively important position.

[0004] However, currently, in the field of internal corner plastering, only right-angle or large-angle internal corners can be plastered. Small-angle internal corners cannot be accessed due to the large size of existing construction equipment, which often results in construction dead corners and makes it impossible to guarantee construction quality.

[0005] Therefore, it is desirable to provide a plastering device that can adapt to different angles of inside corners for plastering construction, while ensuring construction quality. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, one objective of this utility model is to provide a plastering device that can adapt to different angles of inside corners, which can be used for plastering construction at different angles, while ensuring construction quality and is suitable for large-scale promotion and application.

[0007] Another objective of this invention is to provide a plastering device that is adaptable to different angles of inside corners. It is ingeniously designed, has a simple structure, is easy to manufacture, has low manufacturing cost, and is suitable for large-scale promotion and application.

[0008] To achieve the above objectives, this utility model provides a plastering device adapted to inside corners of different angles, including a plastering board. The device is characterized in that it further includes an arc-shaped elastic telescopic rod, a left connecting rod, a right connecting rod, and a handle.

[0009] The plastering board includes a left plastering board and a right plastering board. The left plastering board is vertically arranged and inclined to the right rear in a direction from left to right. The right plastering board is vertically arranged and inclined to the left rear in a direction from right to left. The right side of the left plastering board is connected to the left side of the right plastering board, thereby forming a V-shaped angle between the left plastering board and the right plastering board. The V-shaped angle is a V-shaped elastic angle.

[0010] The arc-shaped elastic telescopic rod is horizontally arranged along the left-right direction and located between the left plaster board and the right plaster board. The left and right ends of the arc-shaped elastic telescopic rod are respectively connected to the left plaster board and the right plaster board. The middle part of the arc-shaped elastic telescopic rod protrudes forward in an arc shape, and the center of the circle in which the arc-shaped elastic telescopic rod is located at the tip of the V-shaped angle.

[0011] The left connecting rod, the right connecting rod, and the handle are all located between the left plastering panel and the right plastering panel and in front of the arc-shaped elastic telescopic rod. The left connecting rod and the right connecting rod are spaced apart from each other. The left connecting rod is horizontally positioned and tilted to the right front in a direction from left to right. The right connecting rod is horizontally positioned and tilted to the left front in a direction from right to left. The left end of the left connecting rod and the right end of the right connecting rod are horizontally rotatably connected to the left plastering panel and the right plastering panel, respectively. The handle is a vertical rod located between the right end of the left connecting rod and the left end of the right connecting rod. The right end of the left connecting rod and the left end of the right connecting rod are both horizontally rotatably connected to the vertical rod.

[0012] Preferably, the plastering board is a plastering steel plate.

[0013] Preferably, the thickness of the plasterboard is 2 mm.

[0014] Preferably, the plastering device adaptable to different angled inside corners further includes an upper left fixing block, a lower left fixing block, a left fixing shaft, an upper right fixing block, a lower right fixing block, and a right fixing shaft. The upper left fixing block and the lower left fixing block are both horizontally arranged and spaced apart vertically. Both the upper left fixing block and the lower left fixing block are located between the left plastering panel and the right plastering panel and are connected to the left plastering panel. The left fixing shaft is vertically arranged and located between the upper left fixing block and the lower left fixing block. The upper and lower ends of the left fixing shaft are respectively connected to the upper left fixing block and the lower left fixing block. The left end of the left connecting rod is located between the upper left fixing block and the lower left fixing block and abuts against the upper left fixing block. The upper right fixed block and the lower right fixed block are horizontally rotatably sleeved on the middle of the left fixed shaft; the upper right fixed block and the lower right fixed block are both horizontally arranged and spaced apart vertically, the upper right fixed block and the lower right fixed block are both located between the left plaster board and the right plaster board and are both connected to the right plaster board; the right fixed shaft is vertically arranged and located between the upper right fixed block and the lower right fixed block, the upper end and the lower end of the right fixed shaft are respectively connected to the upper right fixed block and the lower right fixed block; the right end of the right connecting rod is located between the upper right fixed block and the lower right fixed block and abuts against the upper right fixed block and the lower right fixed block respectively, and is horizontally rotatably sleeved on the middle of the right fixed shaft.

[0015] Preferably, the arc-shaped elastic telescopic rod includes a left arc-shaped rod, a right arc-shaped rod, and an arc-shaped elastic element. The left arc-shaped rod, the right arc-shaped rod, and the arc-shaped elastic element are all arranged along the arc direction of the arc-shaped elastic telescopic rod. The left end of the left arc-shaped rod is connected to the left plastering board, and the right end of the right arc-shaped rod is connected to the right plastering board. The right end of the left arc-shaped rod is provided with a groove along the arc direction of the arc-shaped elastic telescopic rod. The left end of the right arc-shaped rod is movably inserted into the groove along the arc direction of the arc-shaped elastic telescopic rod. The arc-shaped elastic element is located in the groove and between the bottom of the groove and the left end of the right arc-shaped rod, and abuts against the bottom of the groove and the left end of the right arc-shaped rod, respectively.

[0016] More preferably, the arc-shaped elastic element is a spring.

[0017] Preferably, there are multiple arc-shaped elastic telescopic rods, which are arranged vertically at intervals. The number of left connecting rods and right connecting rods are the same as the number of arc-shaped elastic telescopic rods, and the left connecting rods, right connecting rods and arc-shaped elastic telescopic rods are arranged in a one-to-one correspondence.

[0018] More preferably, the number of the arc-shaped elastic telescopic rods is two.

[0019] Furthermore, the plastering device adaptable to different angled inside corners also includes an upper fixing block and a lower fixing block. The upper fixing block and the lower fixing block are both horizontally arranged and spaced apart vertically. The bottom of the upper fixing block and the top of the lower fixing block are respectively provided with an upper groove and a lower groove. The upper fixing block is located between the right end of the upper left connecting rod and the left end of the upper right connecting rod. The right end of the upper left connecting rod and the left end of the upper right connecting rod are both horizontally rotatably connected to the upper fixing block. The lower fixing block is located between the right end of the lower left connecting rod and the left end of the lower right connecting rod. The right end of the lower left connecting rod and the left end of the lower right connecting rod are both horizontally rotatably connected to the lower fixing block. The upper end and the lower end of the vertical rod are respectively vertically inserted into the upper groove and the lower groove and are respectively horizontally rotatable relative to the upper groove and the lower groove.

[0020] More preferably, the plastering device adapted to different angles of inside corners also includes a gripping sleeve, which is vertically arranged and vertically sleeved on the outside of the middle part of the vertical rod.

[0021] The main beneficial effects of this utility model are as follows:

[0022] 1. When using the plastering device adapted to different angles of internal corners, the construction worker operates the device by holding the handle. The left side of the left plastering board and the right side of the right plastering board are tightly attached to the two sides of the internal corner for plastering. When the angle of the internal corner is smaller than the angle of the V-shaped angle of the device, the two sides of the internal corner will press against the left and right plastering boards of the device, causing the left and right plastering boards to move closer together, compressing the V-shaped angle and reducing its angle. During this process, the curved elastic telescopic rod is compressed. The elasticity of the curved elastic telescopic rod allows the left and right plastering panels to fit tightly against the two sides of the inside corner, improving plastering quality while adapting to different angles. The handle is a vertical rod located in front of the middle position of the curved elastic telescopic rod, always occupying only a small space. This perfectly solves the problem that traditional plastering tools cannot work on some inside corners that are too small. Therefore, it can adapt to inside corners of different angles for plastering construction, while ensuring construction quality, making it suitable for large-scale promotion and application.

[0023] 2. When using the plastering device adapted to different angles of the inside corner, the construction worker holds the handle to operate the device. The left side of the left plastering board and the right side of the right plastering board are tightly fitted to the two sides of the inside corner for plastering. When the angle of the inside corner is less than the angle of the V-shaped angle of the device, the two sides of the inside corner will respectively press against the left and right plastering boards of the device, causing the left and right plastering boards to move closer together, compressing the V-shaped angle and making the V-shaped angle... As the angle decreases, the curved elastic telescopic rod is compressed during the process. The elasticity of the curved elastic telescopic rod allows the left and right plastering panels to fit tightly against the two sides of the inside corner, improving plastering quality while adapting to different angles. The handle is a vertical rod located in front of the middle position of the curved elastic telescopic rod, always occupying only a small space. It perfectly solves the problem that traditional plastering tools cannot be used for some inside corners with too small an angle. Therefore, its design is ingenious, its structure is simple, its manufacturing is convenient, and its manufacturing cost is low, making it suitable for large-scale promotion and application.

[0024] These and other objects, features and advantages of this utility model will be fully apparent from the following detailed description and drawings, and can be achieved by the means, devices and combinations thereof specifically pointed out in the description of the utility model. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a specific embodiment of the plastering device adapted to inside corners of different angles according to this utility model.

[0026] Figure 2 yes Figure 1 The diagram shows a front view of a specific embodiment.

[0027] Figure 3 yes Figure 1 The diagram shows a top view of a specific embodiment.

[0028] Figure 4 yes Figure 1 The diagram shows a right-side sectional view of a specific embodiment.

[0029] (Explanation of reference numerals in the attached diagram)

[0030] 1. Plasterboard; 101. Left plasterboard component; 102. Right plasterboard component;

[0031] 2. Arc-shaped elastic telescopic rod; 201. Left arc-shaped rod; 202. Right arc-shaped rod; 203. Arc-shaped elastic element; 204. Slide groove;

[0032] 3 Left connecting rod; 4 Right connecting rod; 5 Handle; 6 Upper left fixing block; 7 Lower left fixing block; 8 Left fixing shaft; 9 Upper right fixing block; 10 Lower right fixing block; 11 Right fixing shaft; 12 Upper fixing block; 13 Lower fixing block; 14 Upper groove; 15 Lower groove; 16 Grip sleeve. Detailed Implementation

[0033] In order to better understand the technical content of this utility model, the following embodiments are provided for detailed description.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Please see Figures 1-4 As shown, in a specific embodiment of this utility model, the plastering device adapted to different angles of inside corners includes a plastering board 1, an arc-shaped elastic telescopic rod 2, a left connecting rod 3, a right connecting rod 4, and a handle 5, wherein:

[0036] The plastering board 1 includes a left plastering board 101 and a right plastering board 102. The left plastering board 101 is vertically arranged and inclined to the right rear in a direction from left to right. The right plastering board 102 is vertically arranged and inclined to the left rear in a direction from right to left. The right side of the left plastering board 101 is connected to the left side of the right plastering board 102, thereby forming a V-shaped angle between the left plastering board 101 and the right plastering board 102. The V-shaped angle is a V-shaped elastic angle.

[0037] The arc-shaped elastic telescopic rod 2 is horizontally arranged along the left-right direction and located between the left plastering board 101 and the right plastering board 102. The left and right ends of the arc-shaped elastic telescopic rod 2 are respectively connected to the left plastering board 101 and the right plastering board 102. The middle part of the arc-shaped elastic telescopic rod 2 protrudes forward in an arc shape, and the center of the circle in which the arc-shaped elastic telescopic rod 2 is located at the tip of the V-shaped angle.

[0038] The left connecting rod 3, the right connecting rod 4, and the handle 5 are all located between the left plastering panel 101 and the right plastering panel 102 and in front of the arc-shaped elastic telescopic rod 2. The left connecting rod 3 and the right connecting rod 4 are spaced apart from each other. The left connecting rod 3 is horizontally positioned and tilted to the right front in a direction from left to right. The right connecting rod 4 is horizontally positioned and tilted to the left front in a direction from right to left. The left end of the left connecting rod 3 and the right end of the right connecting rod 4 are horizontally rotatably connected to the left plastering panel 101 and the right plastering panel 102, respectively. The handle 5 is a vertical rod located between the right end of the left connecting rod 3 and the left end of the right connecting rod 4. The right end of the left connecting rod 3 and the left end of the right connecting rod 4 are both horizontally rotatably connected to the vertical rod.

[0039] The so-called "V-shaped elastic angle" refers to the fact that when force is applied to the left plastering board 101 and the right plastering board 102 to bring them closer together, the angle of the V-shaped angle will decrease and the V-shaped angle will be compressed. When the external force is removed, the V-shaped angle will elastically expand and return to its original position, thereby increasing the angle of the V-shaped angle back to its original position.

[0040] The plastering board 1 can be any suitable material. In a specific embodiment of this utility model, the plastering board 1 is a plastering steel plate, such as an alloy steel plate, which utilizes the elasticity of the bent steel plate to form a V-shaped elastic angle.

[0041] The thickness of the plastering board 1 can be determined as needed. In a specific embodiment of this utility model, the thickness of the plastering board 1 is 2mm.

[0042] The left end of the left connecting rod 3 and the right end of the right connecting rod 4 are horizontally rotatably connected to the left plastering panel 101 and the right plastering panel 102, respectively. Any suitable structure can be used; please refer to [link / reference]. Figures 1-4As shown, in a specific embodiment of this utility model, the plastering device adapted to different angles of internal corners further includes an upper left fixing block 6, a lower left fixing block 7, a left fixing shaft 8, an upper right fixing block 9, a lower right fixing block 10, and a right fixing shaft 11. The upper left fixing block 6 and the lower left fixing block 7 are both horizontally arranged and spaced apart vertically. The upper left fixing block 6 and the lower left fixing block 7 are both located between the left plastering plate 101 and the right plastering plate 102 and are both connected (e.g., welded) to the left plastering plate 101. The left fixing shaft 8 is vertically arranged and located between the upper left fixing block 6 and the lower left fixing block 7. The upper end and the lower end of the left fixing shaft 8 are respectively connected (e.g., welded) to the upper left fixing block 6 and the lower left fixing block 7. The left end of the left connecting rod 3 is located between the upper left fixing block 6 and the lower left fixing block 7 and abuts against the upper left fixing block 6 and the lower left fixing block 7, respectively. The upper fixing block 6 and the lower left fixing block 7 are horizontally rotatably sleeved on the middle part of the left fixing shaft 8; the upper right fixing block 9 and the lower right fixing block 10 are both horizontally arranged and spaced apart vertically. The upper right fixing block 9 and the lower right fixing block 10 are both located between the left plastering board 101 and the right plastering board 102 and are both connected (e.g., welded) to the right plastering board 102. The right fixing shaft 11 is vertically arranged and located between the upper right fixing block 9 and the lower right fixing block 10. The upper end and the lower end of the right fixing shaft 11 are respectively connected (e.g., welded) to the upper right fixing block 9 and the lower right fixing block 10. The right end of the right connecting rod 4 is located between the upper right fixing block 9 and the lower right fixing block 10 and abuts against the upper right fixing block 9 and the lower right fixing block 10 respectively, and is horizontally rotatably sleeved on the middle part of the right fixing shaft 11.

[0043] The arc-shaped elastic telescopic rod 2 can have any suitable configuration; please refer to [link / reference]. Figures 1-4As shown, in a specific embodiment of this utility model, the arc-shaped elastic telescopic rod 2 includes a left arc-shaped rod 201, a right arc-shaped rod 202, and an arc-shaped elastic element 203. The left arc-shaped rod 201, the right arc-shaped rod 202, and the arc-shaped elastic element 203 are all arranged along the arc direction of the arc-shaped elastic telescopic rod 2. The left end of the left arc-shaped rod 201 is connected (e.g., welded) to the left plastering board 101, and the right end of the right arc-shaped rod 202 is connected (e.g., welded) to the right plastering board 101. 02. The right end of the left arc-shaped rod 201 is provided with a groove 204 along the arc direction of the arc-shaped elastic telescopic rod 2. The left end of the right arc-shaped rod 202 is movably inserted into the groove 204 along the arc direction of the arc-shaped elastic telescopic rod 2. The arc-shaped elastic element 203 is located in the groove 204 and between the bottom of the groove 204 and the left end of the right arc-shaped rod 202, and abuts against the bottom of the groove 204 and the left end of the right arc-shaped rod 202 respectively. With the above configuration, when the arc-shaped elastic telescopic rod 2 is compressed, the left end of the right arc-shaped rod 202 is further inserted into the slide groove 204 along the arc direction of the arc-shaped elastic telescopic rod 2, thereby compressing the arc-shaped elastic element 203; when the arc-shaped elastic telescopic rod 2 is extended, the arc-shaped elastic element 203 extends, causing the left end of the right arc-shaped rod 202 to partially exit from the slide groove 204 along the arc direction of the arc-shaped elastic telescopic rod 2.

[0044] The arc-shaped elastic element 203 can be any suitable arc-shaped elastic element. In a specific embodiment of this utility model, the arc-shaped elastic element 203 is a spring.

[0045] The number of the arc-shaped elastic telescopic rods 2 can be determined as needed. Preferably, there are multiple arc-shaped elastic telescopic rods 2, which are arranged vertically at intervals. The number of left connecting rods 3 and right connecting rods 4 are the same as the number of arc-shaped elastic telescopic rods 2, and the left connecting rods 3, right connecting rods 4, and arc-shaped elastic telescopic rods 2 are arranged in a one-to-one correspondence. The term "multiple rods" refers to two or more rods. Please refer to [link to relevant documentation]. Figures 1-2 As shown, in a specific embodiment of this utility model, the number of arc-shaped elastic telescopic rods 2 is 2.

[0046] When there are two left connecting rods 3 and two right connecting rods 4, their connection to the vertical rod can adopt any suitable structure. Please refer to [link to relevant documentation]. Figures 1-4As shown, in a specific embodiment of this utility model, the plastering device adapted to different angles of inside corners further includes an upper fixing block 12 and a lower fixing block 13. The upper fixing block 12 and the lower fixing block 13 are both horizontally arranged and spaced apart vertically. The bottom of the upper fixing block 12 and the top of the lower fixing block 13 are respectively provided with an upper groove 14 and a lower groove 15 vertically. The upper fixing block 12 is located between the right end of the upper left connecting rod 3 and the left end of the upper right connecting rod 4. The upper fixing block 12 is horizontally rotatably connected to the left end of the upper right connecting rod 4. The lower fixing block 13 is located between the right end of the lower left connecting rod 3 and the left end of the lower right connecting rod 4. The lower fixing block 13 is horizontally rotatably connected to the right end of the lower left connecting rod 3 and the left end of the lower right connecting rod 4. The upper and lower ends of the vertical rod are vertically inserted into the upper groove 14 and the lower groove 15, respectively, and are horizontally rotatably arranged relative to the upper groove 14 and the lower groove 15.

[0047] The plastering device adapted to different angles of inside corners may also include any other suitable components; please refer to [link / reference]. Figures 1-4 As shown, in a specific embodiment of this utility model, the plastering device adapted to different angles of inside corners further includes a gripping sleeve 16, which is vertically arranged and vertically sleeved on the outside of the middle part of the vertical rod.

[0048] The left plastering board 101 and the right plastering board 102 can be a single component, integrally formed, or they can be two components connected together. In a specific embodiment of this utility model, the left plastering board 101 and the right plastering board 102 are integrally formed, for example, by bending a single board.

[0049] In use, the construction worker holds handle 5 to operate this utility model. The outer side (left side) of the left plastering board 101 and the outer side (right side) of the right plastering board 102 are tightly fitted against the two sides of the inside corner, and plastering is performed on these two sides. When the angle of the inside corner is less than the angle of the V-shaped angle of this utility model, the two sides of the inside corner will respectively press against the left plastering board 101 and the right plastering board 102, causing the left plastering board 101 and the right plastering board 102 to move closer together and compress the V-shaped clamp. The angle is reduced by the angle adjustment, and the arc-shaped elastic telescopic rod 2 is compressed in the process. The elasticity of the arc-shaped elastic telescopic rod 2 allows the left plastering board 101 and the right plastering board 102 to fit tightly against the two sides of the inside corner, thus improving the plastering quality while adapting to different angles. The handle 5 is a vertical rod located in front of the middle position of the arc-shaped elastic telescopic rod 2. Before and after the angle adjustment of the V-shaped corner, the handle 5 always occupies only a small space, perfectly solving the problem that some inside corners are too small for traditional plastering tools to work on.

[0050] Therefore, by adopting this utility model, the left and right plastering boards form a V-shaped elastic angle, giving the plastering device the advantage of adjustable angle. An arc-shaped elastic telescopic rod is set in the V-shaped elastic angle. During the compression process of the V-shaped elastic angle, the elasticity of the arc-shaped elastic telescopic rod can make the plastering board fit tightly against the plastering construction area. At the same time, the handle is a vertical rod, which occupies less space and perfectly solves the disadvantage that some internal corners are too small for traditional plastering tools to enter for construction.

[0051] This utility model can adapt to plastering construction of inside corners at different angles, while ensuring reliable construction quality, meeting the diverse needs of inside corners, saving time and effort, reducing costs, and being highly practical. It improves construction quality while accelerating construction progress.

[0052] In summary, the plastering device of this utility model, which adapts to inside corners of different angles, can be used for plastering construction at inside corners of different angles while ensuring construction quality. It is ingeniously designed, has a simple structure, is easy to manufacture, and has low manufacturing cost, making it suitable for large-scale promotion and application.

[0053] Therefore, it is evident that the objective of this utility model has been fully and effectively achieved. The function and structural principles of this utility model have been demonstrated and explained in the embodiments. Without departing from the stated principles, any modifications can be made to the implementation methods. Therefore, this utility model includes all modified embodiments based on the spirit and scope of the claims.

Claims

1. A plastering device adaptable to inside corners of different angles, comprising a plastering board, characterized in that, The plastering device adapted to different angles of inside corners also includes an arc-shaped elastic telescopic rod, a left connecting rod, a right connecting rod, and a handle, wherein: The plastering board includes a left plastering board and a right plastering board. The left plastering board is vertically arranged and inclined to the right rear in a direction from left to right. The right plastering board is vertically arranged and inclined to the left rear in a direction from right to left. The right side of the left plastering board is connected to the left side of the right plastering board, thereby forming a V-shaped angle between the left plastering board and the right plastering board. The V-shaped angle is a V-shaped elastic angle. The arc-shaped elastic telescopic rod is horizontally arranged along the left-right direction and located between the left plaster board and the right plaster board. The left and right ends of the arc-shaped elastic telescopic rod are respectively connected to the left plaster board and the right plaster board. The middle part of the arc-shaped elastic telescopic rod protrudes forward in an arc shape, and the center of the circle in which the arc-shaped elastic telescopic rod is located at the tip of the V-shaped angle. The left connecting rod, the right connecting rod, and the handle are all located between the left plastering panel and the right plastering panel and in front of the arc-shaped elastic telescopic rod. The left connecting rod and the right connecting rod are spaced apart from each other. The left connecting rod is horizontally positioned and tilted to the right front in a direction from left to right. The right connecting rod is horizontally positioned and tilted to the left front in a direction from right to left. The left end of the left connecting rod and the right end of the right connecting rod are horizontally rotatably connected to the left plastering panel and the right plastering panel, respectively. The handle is a vertical rod located between the right end of the left connecting rod and the left end of the right connecting rod. The right end of the left connecting rod and the left end of the right connecting rod are both horizontally rotatably connected to the vertical rod.

2. The plastering device adaptable to different angles of inside corners as described in claim 1, characterized in that, The plastering board is a plastering steel plate.

3. The plastering device adaptable to different angles of inside corners as described in claim 1, characterized in that, The thickness of the plasterboard is 2mm.

4. The plastering device adaptable to different angles of inside corners as described in claim 1, characterized in that, The plastering device adapted to different angles of internal corners further includes an upper left fixing block, a lower left fixing block, a left fixing shaft, an upper right fixing block, a lower right fixing block, and a right fixing shaft. The upper left fixing block and the lower left fixing block are both horizontally arranged and spaced apart vertically. Both the upper left fixing block and the lower left fixing block are located between the left plastering panel and the right plastering panel and are connected to the left plastering panel. The left fixing shaft is vertically arranged and located between the upper left fixing block and the lower left fixing block. The upper and lower ends of the left fixing shaft are respectively connected to the upper left fixing block and the lower left fixing block. The left end of the left connecting rod is located between the upper left fixing block and the lower left fixing block and abuts against the upper left fixing block and the lower left fixing block, respectively. The lower left fixing block is horizontally rotatably sleeved on the middle of the left fixing shaft; the upper right fixing block and the lower right fixing block are both horizontally arranged and spaced apart vertically, and are located between the left plaster board and the right plaster board and are connected to the right plaster board. The right fixing shaft is vertically arranged and located between the upper right fixing block and the lower right fixing block, and its upper and lower ends are respectively connected to the upper right fixing block and the lower right fixing block. The right end of the right connecting rod is located between the upper right fixing block and the lower right fixing block and abuts against the upper right fixing block and the lower right fixing block, and is horizontally rotatably sleeved on the middle of the right fixing shaft.

5. The plastering device adaptable to different angles of inside corners as described in claim 1, characterized in that, The arc-shaped elastic telescopic rod includes a left arc-shaped rod, a right arc-shaped rod, and an arc-shaped elastic element. The left arc-shaped rod, the right arc-shaped rod, and the arc-shaped elastic element are all arranged along the arc direction of the arc-shaped elastic telescopic rod. The left end of the left arc-shaped rod is connected to the left plaster board, and the right end of the right arc-shaped rod is connected to the right plaster board. The right end of the left arc-shaped rod is provided with a groove along the arc direction of the arc-shaped elastic telescopic rod. The left end of the right arc-shaped rod is movably inserted into the groove along the arc direction of the arc-shaped elastic telescopic rod. The arc-shaped elastic element is located in the groove and between the bottom of the groove and the left end of the right arc-shaped rod, and abuts against the bottom of the groove and the left end of the right arc-shaped rod, respectively.

6. The plastering device adaptable to different angles of inside corners as described in claim 5, characterized in that, The arc-shaped elastic element is a spring.

7. The plastering device adaptable to different angles of inside corners as described in claim 1, characterized in that, The number of the arc-shaped elastic telescopic rods is multiple, and the multiple arc-shaped elastic telescopic rods are arranged vertically at intervals. The number of the left connecting rods and the number of the right connecting rods are the same as the number of the arc-shaped elastic telescopic rods. The left connecting rods, the right connecting rods and the arc-shaped elastic telescopic rods are arranged in a one-to-one correspondence.

8. The plastering device for adapting to different angles of inside corners as described in claim 7, characterized in that, The number of the aforementioned arc-shaped elastic telescopic rods is two.

9. The plastering device adaptable to different angles of inside corners as described in claim 8, characterized in that, The plastering device adapted to different angles of internal corners further includes an upper fixing block and a lower fixing block. The upper fixing block and the lower fixing block are both horizontally arranged and spaced apart vertically. The bottom of the upper fixing block and the top of the lower fixing block are respectively provided with an upper groove and a lower groove. The upper fixing block is located between the right end of the upper left connecting rod and the left end of the upper right connecting rod. The right end of the upper left connecting rod and the left end of the upper right connecting rod are both horizontally rotatably connected to the upper fixing block. The lower fixing block is located between the right end of the lower left connecting rod and the left end of the lower right connecting rod. The right end of the lower left connecting rod and the left end of the lower right connecting rod are both horizontally rotatably connected to the lower fixing block. The upper end and the lower end of the vertical rod are respectively vertically inserted into the upper groove and the lower groove and are respectively horizontally rotatable relative to the upper groove and the lower groove.

10. The plastering device adaptable to different angles of inside corners as described in claim 9, characterized in that, The plastering device adapted to different angles of inside corners also includes a gripping sleeve, which is vertically arranged and vertically sleeved on the outside of the middle part of the vertical rod.

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