Concave surface structure self-guniting all-dimensional plastering construction device and method

Abstract

The invention discloses a self-guniting all-dimensional plastering construction device and method for a concave surface structure, and relates to the field of wall plastering. The self-guniting all-dimensional plastering construction device for the concave surface structure comprises a supporting frame, two supporting plates connected to the two ends of the supporting frame, two swing plates which can be rotationally connected to the front ends of the two supporting plates around the vertical axis correspondingly, nozzles connected to the front ends of the two swing plates correspondingly, a swing mechanism, an arc-shaped first plastering plate and two second plastering plates. The swing mechanism drives the two swing plates to rotate; the two second plastering plates are connected to the two ends of the first plastering plate in the mode of being capable of rotating around the vertical axis. The first driving mechanism drives the first plastering plate to ascend and descend to plaster the concave surface on the wall surface; and the second driving mechanism drives the two second plastering plates to horizontally move left and right to plaster the wall surface. According to the self-guniting all-dimensional plastering construction device and method for the concave surface structure, mortar spraying and trowelling can be conducted on the concave surface of the wall surface, and the beneficial effects of being high in construction efficiency, good in trowelling quality and good in adaptability are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wall painting, in particular to a concave structure self-spraying all-around plastering construction device and method. BACKGROUND

[0002] Traditional wall plastering construction is mostly completed by manual work, which is not only costly, but also difficult to unify the construction quality. In order to solve the above problems, various auxiliary plastering devices have been developed at present. Compared with traditional manual plastering work, the auxiliary plastering device shows higher work efficiency and better construction quality, and the applicability is getting wider and wider.

[0003] However, the existing auxiliary plastering device cannot solve the technical problem of concave structure plastering, and the operation is complex, which is difficult to meet the construction demand. SUMMARY

[0004] The purpose of the present application is to provide a concave structure self-spraying all-around plastering construction device and method, which can quickly and efficiently perform mortar spraying and troweling work on the concave surface of the wall, and has the advantages of high construction efficiency, good troweling quality and good adaptability.

[0005] The present application is implemented as follows: The present application provides a concave structure self-spraying all-around plastering construction device, which comprises: a support frame; two support plates connected to the two ends of the support frame; two swing plates rotatably connected to the front ends of the two support plates around vertical axes; two nozzles connected to the front ends of the two swing plates; a swing mechanism for driving the two swing plates to rotate around the corresponding vertical axes; an arc-shaped first plastering plate arranged between the two nozzles; two second plastering plates rotatably connected to the two ends of the first plastering plate around vertical axes; a first driving mechanism for driving the first plastering plate to move up and down to plaster the concave surface on the wall; a second driving mechanism for driving the two second plastering plates to synchronously translate left and right to plaster the wall.

[0006] In some optional embodiments, the swing mechanism comprises a swing motor connected to the support frame, a driving turntable connected to the output shaft of the swing motor, and two swing rods hinged to the driving turntable at one end, and the other ends of the two swing rods are respectively hinged to the two swing plates.

[0007] In some optional embodiments, the driving turntable is connected with a fixed block, and the two ends of the fixed block are respectively hinged to the two swing rods.

[0008] In some alternative embodiments, the first driving mechanism comprises a first driving motor, an L-shaped swing support rod connected to an output shaft of the first driving motor, a second driving motor connected to the first driving motor, a swing arm connected to an output shaft of the second driving motor, and a sliding block connected to a distal end of the swing arm away from the second driving motor, the first trowel plate is provided with a sliding groove extending along the length direction on a side away from the concave surface, the sliding block is slidably arranged in the sliding groove, a distal end of the swing support rod away from the first driving motor is hingedly connected to the top of the first trowel plate, the output shaft of the first driving motor is perpendicular to the output shaft of the second driving motor, and the output shaft of the first driving motor rotates to drive the swing support rod to rotate along a vertical plane.

[0009] In some alternative embodiments, the first trowel plate is provided with a ball groove, and a ball head rotatably arranged in the ball groove is connected to the distal end of the swing support rod away from the first driving motor.

[0010] In some alternative embodiments, the second driving mechanism comprises a main transmission shaft, a secondary transmission shaft, a first connecting rod, two second connecting rods, two movable rotating shafts, two fixed rotating shafts, two third connecting rods, and two fourth connecting rods, the main transmission shaft is in transmission connection with the output shaft of the swing motor, one end of the first connecting rod is fixedly sleeved on the main transmission shaft, the other end is rotatably sleeved on the secondary transmission shaft, one end of each of the two second connecting rods is rotatably sleeved on the secondary transmission shaft, and the other end is rotatably sleeved on each of the two movable rotating shafts, the main transmission shaft and the two fixed rotating shafts are rotatably connected to the support frame, one end of each of the two third connecting rods is rotatably sleeved on each of the two movable rotating shafts, and the other end is fixedly sleeved on each of the two fixed rotating shafts, one end of each of the two fourth connecting rods is fixedly sleeved on each of the two fixed rotating shafts, and the other end is hingedly connected to each of the two second trowel plates.

[0011] In some alternative embodiments, each of the second trowel plates is hingedly connected to at least one fifth connecting rod, and the other end of each of the fifth connecting rods is hingedly connected to the support frame.

[0012] In some alternative embodiments, the support frame is connected to a driving seat, the main transmission shaft and the two fixed rotating shafts are rotatably connected to the driving seat, and the other end of each of the fifth connecting rods is hingedly connected to the driving seat.

[0013] In some alternative embodiments, each of the second trowel plates is an arc-shaped plate.

[0014] The application also provides a concave structure self-spraying all-around troweling construction method, which is performed by using the concave structure self-spraying all-around troweling construction device. The concave structure self-spraying all-around troweling construction device is arranged on a side of a wall surface to be troweled, and two nozzles are aligned with the wall surface to be troweled. The mortar is sprayed on the wall to be plastered by using a pressurized pump to transport the mortar through a hose to two nozzles, and simultaneously controlling the swing mechanism to drive the two swing plates to rotate around the corresponding vertical axes to drive the two nozzles to rotate, so that the two nozzles uniformly spray the mortar on the wall, and then the pressurized pump is turned off; The concave structure self-spraying all-around plastering construction device is pushed to move close to the wall to be plastered, so that the first plastering plate and the second plastering plate are attached to the wall to be plastered; The first driving mechanism is controlled to drive the first plastering plate to move up and down to plaster the concave surface on the wall after the mortar is sprayed; The second driving mechanism drives the two second plastering plates to move left and right synchronously to plaster the wall after the mortar is sprayed; The above steps are repeated.

[0015] The concave structure self-spraying all-around plastering construction device provided by the application comprises a support frame, two support plates connected to two ends of the support frame, two swing plates, two nozzles connected to front ends of the two swing plates, a swing mechanism, an arc-shaped first plastering plate arranged between the two nozzles, two second plastering plates, a first driving mechanism, and a second driving mechanism. The two swing plates are rotatably connected to front ends of the two support plates around vertical axes respectively. The swing mechanism is used to drive the two swing plates to rotate around the corresponding vertical axes respectively. The two second plastering plates are rotatably connected to two ends of the first plastering plate around vertical axes respectively. The first driving mechanism is used to drive the first plastering plate to move up and down to plaster the concave surface on the wall. The second driving mechanism is used to drive the two second plastering plates to move left and right synchronously to plaster the wall. The concave structure self-spraying all-around plastering construction device and method provided by the application can quickly and efficiently perform mortar spraying and plastering work on the concave surface on the wall, and have the advantages of high construction efficiency, good plastering quality, and good adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 The first perspective view of the concave structure self-spraying all-around plastering construction device provided by the embodiments of the application is shown in the structural schematic view. Figure 2 The second perspective view of the concave structure self-spraying all-around plastering construction device provided by the embodiments of the application is shown in the structural schematic view. Figure 3The structure schematic view of the first driving mechanism and the first troweling plate of the concave structure self-spraying all-around troweling construction device provided by the embodiment of the application.

[0018] In the figure: 100, support frame; 110, support plate; 120, swing plate; 130, nozzle; 140, swing motor; 150, driving turntable; 160, swing rod; 170, fixed block; 180, driving seat; 190, transmission belt; 200, first troweling plate; 210, second troweling plate; 211, first rotating shaft; 310, first driving motor; 320, swing support rod; 330, second driving motor; 340, swing arm; 350, sliding block; 360, sliding groove; 370, ball groove; 380, ball head; 410, main transmission shaft; 420, secondary transmission shaft; 430, first connecting rod; 440, second connecting rod; 450, movable rotating shaft; 460, fixed rotating shaft; 470, third connecting rod; 480, fourth connecting rod; 481, first pin shaft; 490, fifth connecting rod; 491, second pin shaft. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme of the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, rather than all the embodiments. The components of the embodiments of the application described and shown in the drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the application.

[0021] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0022] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the application is used, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0025] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0026] The features and performance of the concave structure self-spraying all-around plastering construction device and method of the application are further described in detail below in conjunction with the embodiments.

[0027] As Figure 1 , Figure 2 and Figure 3As shown, the embodiment of the present application provides a concave structure self-spraying all-around plastering construction device, which comprises a support frame 100, two support plates 110 connected to two ends of the support frame 100 respectively, two swing plates 120, two nozzles 130 connected to top ends of the two swing plates 120 respectively, a swing mechanism, an arc-shaped first plastering plate 200 arranged between the two nozzles 130, two arc-shaped second plastering plates 210, a first driving mechanism and a second driving mechanism, the convex side of the first plastering plate 200 and the second plastering plate 210 is arranged towards the direction of the nozzle 130, the two swing plates 120 are rotatably connected to front ends of the two support plates 110 respectively, the swing mechanism is used for driving the two swing plates 120 to rotate around the vertical axis respectively, the two second plastering plates 210 are rotatably connected to two ends of the first plastering plate 200 through first rotating shafts 211 respectively, and the top of the support frame 100 is connected with a driving seat 180; the first driving mechanism is used for driving the first plastering plate 200 to move up and down to plaster the concave surface on the wall surface, and the second driving mechanism is used for driving the two second plastering plates 210 to move left and right synchronously to plaster the wall surface.

[0028] The swing mechanism comprises a swing motor 140 connected to the support frame 100, a driving turntable 150 connected with an output shaft of the swing motor 140, a fixed block 170 connected to the driving turntable 150 and two swing rods 160, one end of the two swing rods 160 is hingedly connected to two ends of the fixed block 170 respectively, and the other end of the two swing rods 160 is hingedly connected to the two swing plates 120 respectively.

[0029] The first driving mechanism comprises a first driving motor 310, an L-shaped swing support rod 320 connected to one end of an output shaft of the first driving motor 310, a second driving motor 330 connected to the first driving motor 310, a swing arm 340 connected to one end of an outer wall of an output shaft of the second driving motor 330, and a sliding block 350 connected to one end of the swing arm 340 away from the second driving motor 330, one side of the first plastering plate 200 away from the nozzle 130 is provided with a sliding groove 360 extending along the length direction, the sliding block 350 is slidingly arranged in the sliding groove 360, the top of the first plastering plate 200 is provided with a ball groove 370, one end of the swing support rod 320 away from the first driving motor 310 is connected with a ball head 380 rotatingly arranged in the ball groove 370, the output shaft of the first driving motor 310 is perpendicular to the output shaft of the second driving motor 330, and the output shaft of the first driving motor 310 rotates to drive the swing support rod 320 to rotate along the vertical plane.

[0030] The second driving mechanism comprises a main transmission shaft 410 rotatably connected to the driving base 180, a secondary transmission shaft 420, a first connecting rod 430, two second connecting rods 440, two movable rotating shafts 450, two fixed rotating shafts 460 rotatably connected to the driving base 180, two third connecting rods 470, and two fourth connecting rods 480. The main transmission shaft 410 is in driving connection with the output shaft of the swing motor 140 through the transmission belt 190. One end of the first connecting rod 430 is fixedly sleeved on the main transmission shaft 410, and the other end is rotatably sleeved on the secondary transmission shaft 420. One end of each of the two second connecting rods 440 is rotatably sleeved on the secondary transmission shaft 420, and the other end is rotatably sleeved on the two movable rotating shafts 450, respectively. One end of each of the two third connecting rods 470 is rotatably sleeved on the two movable rotating shafts 450, respectively, and the other end is fixedly sleeved on the two fixed rotating shafts 460, respectively. One end of each of the two fourth connecting rods 480 is fixedly sleeved on the two fixed rotating shafts 460, respectively, and the other end is hingedly connected to the two second plastering plates 210 through the first pin shaft 481, respectively. Each of the two second plastering plates 210 is hingedly connected to a fifth connecting rod 490 through the second pin shaft 491, and the other end of the fifth connecting rod 490 is hingedly connected to the two ends of the driving base 180 through the second pin shaft 491, respectively.

[0031] The embodiment of the present application also provides a concave structure self-spraying all-around plastering construction method, which is performed by using the concave structure self-spraying all-around plastering construction device, and comprises the following steps. Step one, arranging the concave structure self-spraying all-around plastering construction device on one side of a wall surface to be plastered, so that the two nozzles 130 of the concave structure self-spraying all-around plastering construction device are aligned with the two ends of one side of a wall surface region to be plastered, and the first plastering plate 200 and the two second plastering plates 210 are located on one side of the wall surface region to be plastered. Step two, connecting the mortar storage tank filled with mortar to the pressure pump through a hose, connecting the pressure pump to the two nozzles 130 through hoses, respectively, starting the pressure pump to convey the mortar to the two nozzles 130 through the hoses, and then spraying the mortar on the wall surface to be plastered, and simultaneously controlling the swing mechanism to drive the two swing plates 120 to rotate around the corresponding vertical axes to drive the two nozzles 130 to rotate, so that the two nozzles 130 uniformly spray the mortar on the wall surface. Specifically, the swing motor 140 is controlled to be started to drive the driving turntable 150 to rotate, the driving turntable 150 rotates to drive the fixed block 170 to rotate and the two swing rods 160 to move synchronously, so that the two swing plates 120 are driven to rotate around the vertical axes relative to the two support plates 110 through the two swing rods 160 rotating with the fixed block 170, to realize left and right swinging, so that the two nozzles 130 uniformly spray the mortar on the wall surface by swinging left and right, and then the pressure pump is turned off. Step three, push the concave structure self-spraying all-directional plastering construction device to move close to the wall surface to be plastered, so that the first plastering plate 200 and the second plastering plate 210 are attached to the wall surface to be plastered; Step four, control the first driving mechanism to drive the first plastering plate 200 to move up and down to plaster the concave surface on the wall surface after spraying mortar; control the first driving motor 310 or the second driving motor 330 of the first driving mechanism to start driving the first plastering plate 200 to move up and down to plaster the concave surface on the wall surface after spraying mortar; when the first driving motor 310 starts, the L-shaped swing support rod 320 rotates 10-30 degrees along the vertical plane, so that the swing support rod 320 drives the first plastering plate 200 to move up and down to plaster the concave surface on the wall surface through the ball head 380 connected in the ball groove 370, and the first plastering plate 200 moves up and down to push the sliding block 350 to move left and right through the sliding groove 360; when the second driving motor 330 starts, the swing arm 340 rotates to drive the sliding block 350 to push the sliding groove 360 to move, thereby driving the first plastering plate 200 to move up and down to plaster the concave surface on the wall surface.

[0032] Step five, control the second driving mechanism to drive the two second plastering plates 210 to move left and right synchronously to plaster the wall surface after spraying mortar; control the swing motor 140 to drive the main transmission shaft 410 to rotate through the starting transmission belt 190, and the main transmission shaft 410 rotates to drive the secondary transmission shaft 420 to rotate around the main transmission shaft 410 through the connected first connecting rod 430, so that the rotating secondary transmission shaft 420 drives the two movable shafts 450 to swing left and right through the connected two second connecting rods 440, the two movable shafts 450 swing left and right to drive the two fixed shafts 460 to rotate reciprocatingly through the connected two third connecting rods 470, and the two fixed shafts 460 rotate reciprocatingly to drive the two second plastering plates 210 connected through the two fourth connecting rods 480 to swing left and right, thereby making the two second plastering plates 210 swing left and right to plaster the concave surface on the wall surface.

[0033] Step six, repeat the above steps one to five to spray mortar and plaster different concave areas on the wall surface.

[0034] The concave structure self-spraying all-around plastering construction device and method provided by the embodiment of the application is characterized in that: the two ends of the support frame 100 are connected with the support plates 110 respectively, and the two swing plates 120 are rotatably connected to the two support plates 110 respectively, the nozzles 130 for spraying mortar are connected to the front ends of the two swing plates 120 respectively, then the swing mechanism is arranged on the support frame 100 to drive the two swing plates 120 to rotate left and right relative to the two support plates 110, so that the two swing plates 120 drive the connected nozzles 130 to quickly and uniformly spray mortar on the concave surface of the side wall surface, then the second driving mechanism connected with the support frame 100 drives the two second plastering plates 210 and the first plastering plate 200 connected between the two second plastering plates 210 to move left and right along the horizontal direction, and the first driving mechanism connected with the first plastering plate 200 drives the first plastering plate 200 and the two second plastering plates 210 to move up and down along the height direction, so that the arc-shaped first plastering plate 200 and the second plastering plates 210 comprehensively and uniformly smooth the mortar on the concave surface of the side wall surface, and the device has the advantages of high plastering efficiency and beautiful forming quality.

[0035] The two arc-shaped second plastering plates 210 are rotatably connected to the two ends of the arc-shaped first plastering plate 200 through the first shafts 211, and can drive the first plastering plate 200 and the second plastering plates 210 to move adaptively under the conditions that the first driving mechanism and the second driving mechanism drive the first plastering plate 200 and the second plastering plates 210 to lift and swing left and right, so that the arc-shaped first plastering plate 200 and the second plastering plates 210 adapt to the plastering work of different sizes of concave structures of the wall surface, and the device has the advantages of wide application range and simple operation.

[0036] The first driving mechanism drives the L-shaped swing support rod 320 and the swing arm 340 and the sliding block 350 connected to the swing arm 340 to drive the first plastering plate 200 to move up and down through the first driving motor 310 and the second driving motor 330, so that the first plastering plate 200 realizes different amplitude of up and down movement to adapt to the plastering work of different sizes of concave structures, and the application range of the arc-shaped first plastering plate 200 to different concave plastering work is improved.

[0037] In the embodiment of the application, the two swing plates 120 are rotatably connected to the front ends of the two support plates 110 through the connecting shafts, but the connecting shafts are blocked and not shown in the drawings.

[0038] The above-described embodiments are part of the embodiments of the application, rather than all the embodiments. The detailed description of the embodiments of the application is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the application.

Claims

1. A concave structure self-spraying omnidirectional plastering construction device, characterized in that, It includes: Support frame; Two support plates are respectively connected to both ends of the support frame; Two swing plates are rotatably connected to the front ends of the two support plates, respectively, around a vertical axis; Two nozzles are respectively connected to the front ends of the two swing plates; A swing mechanism is used to drive the two swing plates to rotate about the corresponding vertical axis; An arc-shaped first plastering board is positioned between the two nozzles; Two second plastering boards are rotatably connected to both ends of the first plastering board about a vertical axis; The first driving mechanism is used to drive the first plaster board to move up and down to plaster the concave surface of the wall. The second drive mechanism is used to drive the two second plastering boards to move synchronously left and right to plaster the wall surface.

2. The concave structure self-spraying omnidirectional plastering construction device according to claim 1, characterized in that, The swing mechanism includes a swing motor connected to the support frame, a drive turntable connected to the output shaft of the swing motor, and two swing rods with one end hinged to the drive turntable, and the other ends of the two swing rods are respectively hinged to the two swing plates.

3. The concave structure self-spraying omnidirectional plastering construction device according to claim 2, characterized in that, The drive turntable is connected to a fixed block, and the two ends of the fixed block are respectively hinged to the two swing rods.

4. The concave structure self-spraying omnidirectional plastering construction device according to claim 1, characterized in that, The first driving mechanism includes a first driving motor, an L-shaped swing rod with one end connected to the output shaft of the first driving motor, a second driving motor connected to the first driving motor, a swing arm with one end connected to the output shaft of the second driving motor, and a slider connected to the end of the swing arm away from the second driving motor. The first plaster board has a groove extending along its length on the side away from the concave surface. The slider is slidably disposed in the groove. The end of the swing rod away from the first driving motor is hinged to the top of the first plaster board. The output shaft of the first driving motor is perpendicular to the output shaft of the second driving motor. When the output shaft of the first driving motor rotates, it drives the swing rod to rotate along the vertical plane.

5. The concave structure self-spraying omnidirectional plastering construction device according to claim 4, characterized in that, The top of the first plasterboard is provided with a ball groove, and the end of the swing support rod away from the first drive motor is connected to a ball head that is rotatably disposed in the ball groove.

6. The concave structure self-spraying omnidirectional plastering construction device according to claim 2, characterized in that, The second drive mechanism includes a main drive shaft, a secondary drive shaft, a first connecting rod, two second connecting rods, two movable rotating shafts, two fixed rotating shafts, two third connecting rods, and two fourth connecting rods. The main drive shaft is connected to the output shaft of the swing motor. One end of the first connecting rod is fixedly sleeved on the main drive shaft, and the other end is rotatably sleeved on the secondary drive shaft. One end of each of the two second connecting rods is rotatably sleeved on the secondary drive shaft, and the other end is rotatably sleeved on the two movable rotating shafts respectively. The main drive shaft and the two fixed rotating shafts are rotatably connected to the support frame. One end of each of the two third connecting rods is rotatably sleeved on the two movable rotating shafts, and the other end is fixedly sleeved on the two fixed rotating shafts respectively. One end of each of the two fourth connecting rods is fixedly sleeved on the two fixed rotating shafts, and the other end is hinged to the two second plastering boards respectively.

7. The concave structure self-spraying omnidirectional plastering construction device according to claim 6, characterized in that, Each of the second plasterboards is hinged to at least one fifth link, and the other end of the fifth link is hinged to the support frame.

8. The concave structure self-spraying omnidirectional plastering construction device according to claim 7, characterized in that, The support frame is connected to a drive seat, the main drive shaft and the two fixed rotating shafts are rotatably connected to the drive seat, and the other end of the fifth link is hinged to the drive seat.

9. The concave structure self-spraying omnidirectional plastering construction device according to claim 1, characterized in that, The second plastering board is an arc-shaped board.

10. A method for constructing a concave structure with self-spraying grout for all-around plastering, characterized in that, It is carried out using the concave structure self-spraying all-around plastering construction device as described in any one of claims 1 to 9, and includes the following steps: The concave structure self-spraying omnidirectional plastering construction device is arranged on the side of the wall to be plastered, so that the two nozzles are aimed at the wall to be plastered. The mortar is delivered to the two nozzles through a pressure pump and then sprayed onto the wall to be plastered. At the same time, the swing mechanism is controlled to drive the two swing plates to rotate around the corresponding vertical axis, thereby rotating the two nozzles and making the two nozzles spray the mortar evenly onto the wall. Then the pressure pump is turned off. Push the concave structure self-spraying omnidirectional plastering construction device toward the wall to be plastered, so that the first plaster board and the second plaster board are in contact with the wall to be plastered. The first drive mechanism is controlled to drive the first plastering board to move up and down to plaster the concave surface of the wall after spraying mortar. The second drive mechanism drives two second plastering boards to move synchronously left and right to plaster the wall surface after spraying mortar. Repeat the steps above.

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