CN212027012U

CN212027012U - Reentrant corner circular arc plastering tool

Info

Publication number: CN212027012U
Application number: CN202020304844.6U
Authority: CN
Inventors: 杨澎坡; 刘浩; 杨坤; 董宏松; 朱棣
Original assignee: China Construction Seventh Engineering Division Corp Ltd
Current assignee: China Construction Seventh Engineering Division Corp Ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-11-27
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a reentrant corner arc plastering tool, which comprises an arc plastering plate and a handle, the handle is including the horizontal pole that is located the horizontal direction, the first body of rod and the second body of rod, the bottom of the first body of rod is through the upper surface connection of first buckle mechanism with the board of plastering, the bottom of the second body of rod is through the upper surface connection of second buckle mechanism with the board of plastering, first buckle mechanism include with the first buckle body of going up of the bottom fixed connection of the first body of rod, with the first buckle body of the last fixed surface connection of the board of plastering, second buckle mechanism include with the bottom fixed connection's of the second body of rod second go up the buckle body, with the second buckle body of the last fixed surface connection of the board of plastering, the utility model discloses the setting of first buckle mechanism and second buckle mechanism is convenient for with quick installation and the dismantlement of handle and board of plastering, easy operation, with low costs, and be convenient for change the board of different radians.

Description

Reentrant corner circular arc plastering tool

Technical Field

The utility model relates to a construction technical field, concretely relates to reentrant corner circular arc plastering tool.

Background

In the construction process of the building engineering foundation, wall plastering is a means for beautifying the building wall, the wall can be shaped by increasing the plastering thickness, in the building engineering, the outer corner at the turning part of the wall is called as an external corner, the inner corner is called as an internal corner, the conditions that the internal corner and the external corner adopt circular arc treatment during plastering are many, for example, in the flat vertical surface cross-joint coiled material upturning waterproof construction, in order to ensure that the coiled material and the base layer as well as the coiled material and the additional layer are firmly pasted, the specification of the internal corner and the external corner needs to be made into circular arcs or 45 circular arcs⁰The size of the slope toe is determined according to the variety of the coiled materials, the base surface of the waterproof layer is solid, flat and clean, then most of the existing wall corner arc treatment methods are manually carried out by workers, the smeared angle is not uniform, the shape is not good, and no related professional arc plastering tool exists in the market; the self-made circular arc plastering tool is adopted in part building site, and the handle of the self-made circular arc plastering tool and the plastering plate generally adopt fixed connection to place, and when the plastering plate is stored or different radians are to be changed, the plastering plate and the handle cannot be separated, and the storing and the changing of the plastering plate are inconvenient.

Therefore, it is a considerable problem to provide a reentrant circular arc trowel which facilitates quick installation and removal of the handle and trowel plate.

Disclosure of Invention

The utility model aims at providing a reentrant corner circular arc utensil convenient to install handle and plastering plate fast and dismantle to the not enough of above-mentioned prior art.

The purpose of the utility model is realized like this:

the utility model provides a reentrant corner circular arc plastering tool, can dismantle the handle of being connected including being circular-arc plastering plate, with the upper surface of plastering plate, the handle is including the horizontal pole that is located the horizontal direction, with the left end fixed connection of horizontal pole and be in the first body of rod of vertical direction, with the right-hand member fixed connection of horizontal pole and be in the second body of rod of vertical direction, the bottom of the first body of rod is through the upper surface connection of first buckle mechanism with the plastering plate, the bottom of the second body of rod is through the upper surface connection of second buckle mechanism with the plastering plate, first buckle mechanism include with the first last buckle body of the bottom fixed connection of the first body of rod, with the first buckle body of the upper surface fixed connection of plastering plate, second buckle body on the second buckle mechanism include with the bottom fixed connection's of the second body of rod, with the upper surface fixed connection's of plastering plate buckle body under the second.

The first upper buckle body comprises a first insert fixedly connected with the lower surface of a first rod body, a first groove located on the upper surface of the first insert and provided with an upward opening, a second groove located on the lower surface of the first rod body and provided with a downward opening, and a first clamping mechanism located in the first groove and the second groove, wherein the first groove is communicated with the second groove, a first through hole enabling the first groove to be communicated with the outside is formed in the left side surface of the first groove, and a second through hole enabling the second groove to be communicated with the outside is formed in the left side surface of the second groove.

The first clamping mechanism comprises a first connecting plate, a first clamping block, a first T-shaped column, a first spring and a second spring, wherein two ends of the first connecting plate are respectively located in the first groove and the second groove, one end of the first clamping block penetrates through the first connecting plate and is fixedly connected with the first connecting plate, one end of the first T-shaped column is sleeved at the right end of the first clamping block, one end of the first T-shaped column is fixedly connected with the right side face of the first connecting plate, the first spring is sleeved at the right end of the first clamping block, one end of the second T-shaped column is fixedly connected with the right side face of the first T-shaped column, the left end of the.

The first lower clamping body comprises a first socket and spigot seat fixedly connected with the upper surface of the plastering plate, a first socket and spigot hole which is positioned on the upper surface of the first socket and has an upward opening, and a first clamping hole which is positioned on the left side surface of the first socket and enables the first socket and spigot hole to be communicated with the outside.

The first lower clamping body comprises a first socket and spigot seat fixedly connected with the upper surface of the plastering plate, a first socket and spigot hole which is positioned on the upper surface of the first socket and has an upward opening, and a first clamping groove which is positioned on the left side surface of the first socket and has a rightward opening.

The second upper buckle body comprises a second insert block fixedly connected with the lower surface of the second rod body, a third groove located on the upper surface of the second insert block and provided with an upward opening, a fourth groove located on the lower surface of the second rod body and provided with a downward opening, and a second clamping mechanism located in the third groove and the fourth groove, wherein a third through hole enabling the third groove to be communicated with the outside is formed in the right side surface of the third groove, and a fourth through hole enabling the fourth groove to be communicated with the outside is formed in the right side surface of the fourth groove.

The second clamping mechanism comprises a first connecting plate, a second clamping block, a second T-shaped column, a third spring and a fourth spring, wherein the two ends of the first connecting plate are respectively located in the first groove and the second groove, one end of the second clamping block penetrates through the first connecting plate and is fixedly connected with the first connecting plate, one end of the second T-shaped column penetrates through the second connecting plate and is fixedly connected with the second connecting plate, the third spring is sleeved at the left end of the second clamping block and is fixedly connected with the left side face of the second connecting plate, the fourth spring is sleeved at the left end of the second T-shaped column and is fixedly connected with one end of the second T-shaped column, the right end of the second clamping block penetrates through the third through hole and moves in the third through hole, and the right end of the second.

The second lower buckle mechanism comprises a second socket fixedly connected with the upper surface of the plastering plate, a second socket hole which is positioned on the upper surface of the second socket and has an upward opening, and a second clamping hole which is positioned on the right side surface of the second socket hole and enables the second socket hole to be communicated with the outside.

The second lower buckle mechanism comprises a second socket fixedly connected with the upper surface of the plastering plate, a second socket hole which is positioned on the upper surface of the second socket and has an upward opening, and a second clamping groove which is positioned on the right side surface of the second socket hole and has a leftward opening.

Has the positive and beneficial effects that: the utility model discloses the setting of first buckle mechanism and second buckle mechanism is convenient for with the quick installation of handle and plastering plate and dismantlement, easy operation, and is with low costs, and is convenient for change the plastering plate of different radians.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of FIG. 1;

3 FIG. 33 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 the 3 line 3 A 3- 3 A 3; 3

FIG. 4 is an enlarged schematic view of part B;

FIG. 5 is an enlarged view of the portion C;

fig. 6 is a schematic structural view of a first lower fastening body in embodiment 1 of the present invention;

fig. 7 is a schematic structural view of a second lower fastening body in embodiment 1 of the present invention;

fig. 8 is a schematic structural view of a first lower fastening body according to embodiment 2 of the present invention;

fig. 9 is a schematic structural view of a second lower fastening body in embodiment 2 of the present invention;

in the figure, the following steps are carried out: the plastering plate comprises a plastering plate 1, a handle 2, a cross bar 3, a first rod body 4, a second rod body 5, a first upper clamping body 6, a first lower clamping body 7, a second upper clamping body 8, a second lower clamping body 9, a first insert block 10, a first groove 11, a first through hole 12, a second groove 13, a second through hole 14, a first clamping block 15, a first connecting plate 16, a first spring 17, a first T-shaped column 18, a second spring 19, a second insert block 20, a third groove 21, a third through hole 22, a fourth groove 23, a fourth through hole 24, a second clamping block 25, a second connecting plate 26, a third spring 27, a second T-shaped column 28, a fourth spring 29, a first socket seat 30, a first socket hole 31, a first clamping hole 32, a second socket seat 33, a second socket hole 34, a second clamping hole 35, a first clamping groove 36 and a second clamping groove 37.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1

As shown in fig. 1 and fig. 2, a reentrant corner arc plastering tool comprises a plastering plate 1 in an arc shape and a handle 2 detachably connected with the upper surface of the plastering plate 1, the handle 2 comprises a horizontal rod 3 located in the horizontal direction, a first rod body 5 fixedly connected with the left end of the horizontal rod 3 and located in the vertical direction, a second rod body 6 fixedly connected with the right end of the horizontal rod 3 and located in the vertical direction, the bottom of the first rod body 4 is connected with the upper surface of the plastering plate 1 through a first buckle mechanism, the bottom of the second rod body 5 is connected with the upper surface of the plastering plate 1 through a second buckle mechanism, the first buckle mechanism comprises a first upper buckle body 6 fixedly connected with the bottom of the first rod body 4 and a first lower buckle body 7 fixedly connected with the upper surface of the plastering plate 1, and the second buckle mechanism comprises a second upper buckle body 8 fixedly connected with the bottom of the second rod body 5 and a second lower buckle body 9 fixedly connected with the upper surface of the plastering plate 1.

As shown in fig. 3 and 4, the first upper fastening body 6 includes a first insert 10 fixedly connected to the lower surface of the first rod 4, a first groove 11 located on the upper surface of the first insert 10 and having an upward opening, a second groove 13 located on the lower surface of the first rod 4 and having a downward opening, and a first fastening mechanism located in the first groove 11 and the second groove 13, wherein the lower surface of the first rod 14 is fixedly connected to the upper surface of the first insert 10 through an adhesive, the first groove 11 is communicated with the second groove 13, a first through hole 12 is formed in the left side surface of the first groove 11 to communicate the first groove 11 with the outside, a second through hole 14 is formed in the left side surface of the second groove 13 to communicate the second groove 13 with the outside, the first fastening mechanism includes a first connecting plate 16 having two ends respectively located in the first groove 11 and the second groove 13, a first fastening block 15 having one end passing through the first connecting plate 16 and fixedly connected to the first connecting plate 16, A first T-shaped column 18 with one end passing through the first connecting plate 16 and fixedly connected with the first connecting plate 16, a first spring 17 sleeved on the right end of the first clamping block 15 and one end fixedly connected with the right side surface of the first connecting plate 16, a second spring 19 sleeved on the right end of the first T-shaped column 18 and one end fixedly connected with the right side surface of the first connecting plate 16, wherein the left end of the first clamping block 15 passes through the first through hole 12 and moves in the first through hole 12, the left end of the first T-shaped column 18 passes through the second through hole 14, the left side surface of the first clamping block 15 is an inclined surface convenient for entering the first lower clamping mechanism 7, the right end of the first spring 17 is fixedly connected with the right side surface of the first groove 11, the right side surface of the second spring 19 is fixedly connected with the right side surface of the second groove 13, the right end of the first T-shaped column 18 is positioned in the second groove 13, the right end of the first clamping block 15 is positioned in the first groove 13, and the first T-shaped column, the first T-shaped pillar 18 moves to the right while driving the first connecting plate 16 to move to the right, the first connecting plate 16 drives the first locking block 15 to move to the right, the left end of the first locking block 15 is located in the first through hole 12, and if the first T-shaped pillar 18 is not pressed with force, the left end of the first locking block 15 is located at the left side of the first through hole 12 due to the action of the first spring 17 and the second spring 19.

As shown in fig. 6, the first lower fastening body 7 includes a first socket 30 fixedly connected to the upper surface of the plastering plate 1, a first inserting hole 31 located on the upper surface of the first socket 30 and having an upward opening, and a first fastening hole 32 located on the left side surface of the first inserting hole 31 and communicating the first inserting hole with the outside, the size of the first fastening hole 32 is larger than that of the first fastening block 15, the first fastening block 15 is fastened and matched with the first fastening hole 32, the bottom of the first socket 30 is fixed to the upper surface of the plastering plate 1 by an adhesive, the size of the first inserting hole 31 is larger than that of the first inserting block 10, so that the first inserting block 10 can be conveniently inserted into the first inserting hole 31.

When the first rod 4 and the plastering plate 1 need to be fixed, the first inserting block 10 is firstly put into the first socket hole 31, because the left side surface of the first clamping block 15 is an inclined surface, the first clamping block 15 can conveniently enter the first socket hole 31, when the first clamping block 15 moves downwards to the first socket hole 31, the first spring 17 pushes the first clamping block 15 to pass through the first through hole 12 and enter the first clamping hole 32 under the action of the first spring 17, the first clamping block 15 is in buckling fit with the first clamping hole 32, the first rod 4 is fixedly connected with the upper surface of the plastering plate 1, when the first rod 4 needs to be separated from the plastering plate 1, the first T-shaped column 18 is pressed rightwards by hand, the first T-shaped column 18 moves rightwards and drives the first connecting plate 16 to move rightwards, the first connecting plate 16 drives the first clamping block 15 to move rightwards and separate from the first clamping hole 32, and simultaneously the first rod 4 is pulled upwards, the first rod 4 is separated from the plastering plate 1.

As shown in fig. 3 and 5, the second upper fastening body 8 includes a second insert block 20 fixedly connected to the lower surface of the second rod body 5, a third groove 21 located on the upper surface of the second insert block 20 and having an upward opening, a fourth groove 23 located on the lower surface of the second rod body 5 and having a downward opening, and a second fastening mechanism located in the third groove 21 and the fourth groove 23, the lower surface of the second rod body 5 is fixed to the upper surface of the second insert block 20 by an adhesive, a third through hole 22 for communicating the third groove 21 with the outside is disposed on the right side surface of the third groove 21, and a fourth through hole 24 for communicating the fourth groove 23 with the outside is disposed on the right side surface of the fourth groove 23. The second clamping mechanism comprises a first connection 26, a second clamping block 25, a second T-shaped column 28, a third spring 27 and a fourth spring 28, wherein two ends of the first connection 26 are respectively positioned in the first groove 21 and the second groove 23, one end of the second clamping block passes through the first connecting plate 26 and is fixedly connected with the first connecting plate 26, one end of the second T-shaped column 28 passes through the second connecting plate 26 and is fixedly connected with the second connecting plate 26, one end of the third spring 27 is sleeved at the left end of the second clamping block 25 and is fixedly connected with the left side surface of the second connecting plate 26, the left end of the second clamping block 25 passes through the third through hole 22 and moves in the third through hole 22, the right end of the second T-shaped column 28 passes through the fourth through hole 24, the right side surface of the second clamping block 25 is an inclined surface, so that the second clamping block 25 can be conveniently inserted into the second lower clamping mechanism 9, and the left end of the third spring 27 is fixedly connected with the left side surface of the third groove 21, the left end of the fourth spring 29 is fixedly connected with the left side surface of the fourth groove 23, the seat end of the second T-shaped column 28 is located in the third groove 23, the left end of the second fixture block 25 is located in the third groove 13, the second T-shaped column 28 is pressed leftward, the second T-shaped column 28 moves leftward and simultaneously drives the second connecting plate 26 to move leftward and rightward, the second fixture block 25 is driven by the first connecting plate 26 to move leftward, the right end of the second fixture block 25 is located in the second through hole 22, and if the second T-shaped column 28 is not pressed forcibly, the right end of the second fixture block 25 is located on the right side of the second through hole 22 under the action of the third spring 27 and the fourth spring 29.

As shown in fig. 7, the second lower fastening mechanism 9 includes a second socket 33 fixedly connected to the upper surface of the plastering plate 1, a second socket hole 34 located on the upper surface of the second socket 33 and having an upward opening, and a second fastening hole 35 located on the right side of the second socket hole 34 and communicating the second socket hole 34 with the outside, the lower surface of the second socket 33 and the upper surface of the plastering plate 1 are fixed by an adhesive, the size of the second socket hole 34 is larger than that of the second insert block 20, so that the second insert block 20 can enter the second socket hole 34, and the size of the second fastening hole 35 is larger than that of the second fastening hole 25, so that the second fastening hole 25 can pass through the second fastening hole 35.

When the second rod 5 needs to be fixed with the plastering plate 1, the second insert block 20 is firstly inserted into the second insertion hole 34, the second latch 25 moves downward along with the second insert 20, and when the second latch 25 moves to the second latch hole 35, due to the action of the first spring 27, the first spring 27 pushes the second latch 25 to move rightwards, the right end of the second latch 25 passes through the second latch hole 35 and is positioned at the right side of the second latch hole 35, the second block 25 is engaged with the second hole 35, the second rod 5 is fixed to the plastering plate 1, when the plastering plate needs to be separated from the second rod body, the second T-shaped column 28 is pressed leftwards by hand, the second T-shaped column 28 moves leftwards and simultaneously drives the second connecting plate 26 to move leftwards, the second connecting plate 26 drives the second clamping block 25 to move leftwards, the second block 25 is separated from the second block hole 35, and the second rod 5 is pulled out upward, so that the second rod 5 is separated from the plastering plate.

Example 2

As shown in fig. 8, the first lower fastening body 7 includes a first socket 30 fixedly connected to the upper surface of the plasterboard 1, a first socket hole 31 located on the upper surface of the first socket 30 and having an upward opening, and a first engaging groove 36 located on the left side surface of the first socket hole 31 and having a rightward opening, where the size of the first engaging groove 36 is larger than that of the first engaging block 15, so that the first engaging block 15 is conveniently in snap-fit with the first engaging groove 36, the bottom of the first socket 30 is fixed to the upper surface of the plasterboard 1 by using an adhesive, and the size of the first socket hole 31 is larger than that of the first insert 10, so that the first insert 10 is conveniently inserted into the first socket hole 31.

When the first rod 4 needs to be fixed with the plastering plate 1, the first inserting block 10 is firstly put into the first socket hole 31, because the left side surface of the first clamping block 15 is an inclined surface, the first clamping block 15 can conveniently enter the first socket hole 31, when the first clamping block 15 moves downwards to the first socket hole 31, under the action of the first spring 17, the first spring 17 pushes the first clamping block 15 to pass through the first through hole 12 and enter the first clamping groove 36, the first clamping block 15 is buckled and matched with the first clamping groove 36, the first rod 4 is fixedly connected with the upper surface of the plastering plate 1, when the first rod 4 needs to be separated from the plastering plate 1, the first T-shaped column 18 is pressed rightwards by hand, the first T-shaped column 18 moves rightwards and simultaneously drives the first connecting plate 16 to move rightwards, the first connecting plate 16 drives the first clamping block 15 to move rightwards and separate from the first clamping groove 36, and simultaneously pulls the first rod 4 upwards, the first rod 4 is separated from the plastering plate 1.

As shown in fig. 9, the second lower fastening mechanism 9 includes a second socket 33 fixedly connected to the upper surface of the plastering plate 1, a second socket hole 34 located on the upper surface of the second socket 33 and having an upward opening, and a second locking groove 37 located on the right side surface of the second socket hole 34 and having a leftward opening, the lower surface of the second socket 33 is fixed to the upper surface of the plastering plate 1 by an adhesive, the second socket hole 34 is placed with a size larger than that of the second insert block 20 to facilitate the second insert block 20 to enter the second socket hole 34, and the second locking groove 37 is larger than that of the second locking block 25 to facilitate the second locking block 25 to be matched with the second locking groove 37.

When the second rod 5 needs to be fixed with the plastering plate 1, the second insert block 20 is firstly inserted into the second insertion hole 34, the second latch 25 moves downward along with the second insert 20, and when the second latch 25 moves to the second latch hole 35, due to the action of the first spring 27, the first spring 27 pushes the second latch 25 to move rightwards, the right end of the second block 25 is located in the second slot 37, so that the second block 25 is snap-fitted with the second slot 37, the second rod 5 is fixed to the plastering plate 1, when the plastering plate needs to be separated from the second rod, the second T-shaped pillar 28 is pressed leftwards by hand, the second T-shaped pillar 28 moves leftwards and drives the second connecting plate 26 to move leftwards, the second connecting plate 26 drives the second clamping block 25 to move leftwards, the second block 25 is separated from the second engaging groove 37, and the second rod 5 is pulled out upward, so that the second rod 5 is separated from the plastering plate.

The utility model discloses the setting of first buckle mechanism and second buckle mechanism is convenient for with the quick installation of handle and plastering plate and dismantlement, easy operation, and is with low costs, and is convenient for change the plastering plate of different radians.

Claims

1. The utility model provides an reentrant corner circular arc plastering tool, can dismantle the handle of being connected, its characterized in that including the upper surface that is circular-arc plastering plate, with plastering plate: the handle comprises a horizontal rod located in the horizontal direction, a first rod body which is fixedly connected with the left end of the horizontal rod and located in the vertical direction, and a second rod body which is fixedly connected with the right end of the horizontal rod and located in the vertical direction, the bottom of the first rod body is connected with the upper surface of the plastering plate through a first buckle mechanism, the bottom of the second rod body is connected with the upper surface of the plastering plate through a second buckle mechanism, the first buckle mechanism comprises a first upper buckle body fixedly connected with the bottom of the first rod body and a first lower buckle body fixedly connected with the upper surface of the plastering plate, and the second buckle mechanism comprises a second upper buckle body fixedly connected with the bottom of the second rod body and a second lower buckle body fixedly connected with the upper surface of the plastering plate.

2. The reentrant angular arc trowel of claim 1, wherein: the first upper buckle body comprises a first insert fixedly connected with the lower surface of a first rod body, a first groove located on the upper surface of the first insert and provided with an upward opening, a second groove located on the lower surface of the first rod body and provided with a downward opening, and a first clamping mechanism located in the first groove and the second groove, wherein the first groove is communicated with the second groove, a first through hole enabling the first groove to be communicated with the outside is formed in the left side surface of the first groove, and a second through hole enabling the second groove to be communicated with the outside is formed in the left side surface of the second groove.

3. The reentrant angular arc trowel of claim 2, wherein: the first clamping mechanism comprises a first connecting plate, a first clamping block, a first T-shaped column, a first spring and a second spring, wherein two ends of the first connecting plate are respectively located in the first groove and the second groove, one end of the first clamping block penetrates through the first connecting plate and is fixedly connected with the first connecting plate, one end of the first T-shaped column is sleeved at the right end of the first clamping block, one end of the first T-shaped column is fixedly connected with the right side face of the first connecting plate, the first spring is sleeved at the right end of the first clamping block, one end of the second T-shaped column is fixedly connected with the right side face of the first T-shaped column, the left end of the.

4. The reentrant angular arc trowel of claim 3, wherein: the first lower clamping body comprises a first socket and spigot seat fixedly connected with the upper surface of the plastering plate, a first socket and spigot hole which is positioned on the upper surface of the first socket and has an upward opening, and a first clamping hole which is positioned on the left side surface of the first socket and enables the first socket and spigot hole to be communicated with the outside.

5. The reentrant angular arc trowel of claim 3, wherein: the first lower clamping body comprises a first socket and spigot seat fixedly connected with the upper surface of the plastering plate, a first socket and spigot hole which is positioned on the upper surface of the first socket and has an upward opening, and a first clamping groove which is positioned on the left side surface of the first socket and has a rightward opening.

6. The reentrant angular arc trowel of claim 1, wherein: the second upper buckle body comprises a second insert block fixedly connected with the lower surface of the second rod body, a third groove located on the upper surface of the second insert block and provided with an upward opening, a fourth groove located on the lower surface of the second rod body and provided with a downward opening, and a second clamping mechanism located in the third groove and the fourth groove, wherein a third through hole enabling the third groove to be communicated with the outside is formed in the right side surface of the third groove, and a fourth through hole enabling the fourth groove to be communicated with the outside is formed in the right side surface of the fourth groove.

7. The reentrant angular arc trowel of claim 6, wherein: the second clamping mechanism comprises a first connecting plate, a second clamping block, a second T-shaped column, a third spring and a fourth spring, wherein the two ends of the first connecting plate are respectively located in the first groove and the second groove, one end of the second clamping block penetrates through the first connecting plate and is fixedly connected with the first connecting plate, one end of the second T-shaped column penetrates through the second connecting plate and is fixedly connected with the second connecting plate, the third spring is sleeved at the left end of the second clamping block and is fixedly connected with the left side face of the second connecting plate, the fourth spring is sleeved at the left end of the second T-shaped column and is fixedly connected with one end of the second T-shaped column, the right end of the second clamping block penetrates through the third through hole and moves in the third through hole, and the right end of the second.

8. The reentrant angular arc trowel of claim 1, wherein: the second lower buckle body comprises a second socket and spigot seat fixedly connected with the upper surface of the plastering plate, a second socket and spigot hole which is positioned on the upper surface of the second socket and has an upward opening, and a second clamping hole which is positioned on the right side surface of the second socket and enables the second socket and spigot hole to be communicated with the outside.

9. The reentrant angular arc trowel of claim 1, wherein: the second lower buckle body comprises a second socket and socket seat fixedly connected with the upper surface of the plastering plate, a second socket and jack with an upward opening and positioned on the upper surface of the second socket and socket seat, and a second clamping groove with a leftward opening and positioned on the right side surface of the second socket and jack.