Automatic plastering mechanism

Abstract

The invention discloses an automatic plastering mechanism, and mainly relates to the technical field of house building construction equipment. Comprising a plastering frame, a plastering assembly arranged on the front side of the plastering frame and a connecting rod mechanism used for installing the plastering assembly on the plastering frame, the plastering assembly comprises a lower plastering plate, an upper plastering plate and a spray head plate which are sequentially arranged from bottom to top, and a mortar spray head and a translation mechanism used for driving the mortar spray head to move left and right are arranged on the spray head plate. The lower patter is hinged to the upper patter; according to the mortar feeding device, excessive concentration of mortar can be effectively avoided, and the problem that feeding on a high wall surface is difficult to complete during manual feeding can also be solved; the functions that the plastering mechanism conducts plastering on the wall face when moving upwards and conducts troweling and flattening on the plastered face when moving downwards are achieved, so that the severe working environment of a construction site is dealt with, the reliability of the mechanism is improved, in addition, a vibration compaction mechanism is further arranged, it can be guaranteed that mortar and the wall face are tightly combined, and the compactness and uniformity of plastering are improved.

Description

Technical Field

[0001] This invention relates to the field of building construction equipment technology, specifically an automatic plastering mechanism. Background Technology

[0002] Among the many construction processes in the building construction industry, the plastering process on the wall surface has always been an extremely important process. Traditional plastering work is basically done by workers manually. Due to the huge workload and high labor intensity, the construction efficiency is generally low. At the same time, it is difficult to guarantee the flatness and adhesion of the plaster applied to the wall surface, making it difficult to meet the requirements of high-quality plastering.

[0003] With the urgent need to improve efficiency and reduce labor intensity, various auxiliary construction equipment has appeared on the market. However, most of them are semi-automatic plastering equipment. The material feeding method of this equipment is mostly to manually pour mortar directly onto the plastering board with a hand-held shovel or other material feeding device. This results in uneven distribution of mortar on the plastering board, with some areas being too concentrated. During plastering, there is serious leakage, resulting in uneven mortar thickness and poor plastering quality. Manual material feeding is also difficult for high places.

[0004] On the other hand, the harsh working environment at the construction site also imposes high limitations on the use of complex and sophisticated electrical equipment. How to enable the mechanism to automatically complete complex plastering work while maintaining high stability and durability is also an engineering problem that urgently needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art and provide an automatic plastering mechanism that can effectively avoid excessive concentration of mortar and solve the problem of difficult material loading on higher walls when manually loaded. The plastering mechanism can plaster the wall surface when moving upwards and smooth and flatten the plastered surface when moving downwards, thereby improving the reliability of the mechanism in the face of harsh working environments at construction sites. In addition, it is equipped with a vibration compaction mechanism to ensure that the mortar is tightly bonded to the wall surface, improving the density and uniformity of the plastering.

[0006] To achieve the above objectives, the present invention employs the following technical solution: An automatic plastering mechanism includes a plastering frame, a plastering assembly disposed on the front side of the plastering frame, and a linkage mechanism for mounting the plastering assembly on the plastering frame. The plastering assembly includes a lower plastering plate, an upper plastering plate, and a nozzle plate arranged sequentially from bottom to top. The nozzle plate is equipped with a mortar nozzle and a translation mechanism for moving the mortar nozzle left and right. The lower plastering plate is hinged to the upper plastering plate. The linkage mechanism adjusts the inclination angles of the lower and upper plastering plates. During upward plastering, the upper plastering plate extends obliquely upward away from the wall, while the lower plastering plate remains vertical. During downward plastering, the lower plastering plate extends obliquely downward away from the wall, while the upper plastering plate remains vertical.

[0007] Preferably, mudguards are provided on both sides of the upper plastering plate, and sealing plates are provided on both sides of the plastering frame.

[0008] Preferably, the upper rear end of the plastering frame is welded with an angle iron, the lower rear end is welded with a plastering frame cross brace, the plastering frame cross brace is provided with frame lifting wheels, and the side plates of the plastering frame are equipped with frame traveling wheels.

[0009] Preferably, the linkage mechanism includes a lower trowel linkage mechanism, which includes a lower trowel linkage hinged to the rear side of the top of the lower trowel, a lower trowel shaft rotatably mounted on the plastering frame, and a second lower trowel gas spring hinged to the rear side of the bottom of the lower trowel. The rear end of the lower trowel linkage is provided with a first lower trowel gas spring, and the rear end of the first lower trowel gas spring is connected to the plastering frame by bolts. The lower trowel shaft is symmetrically provided with shaft connecting plates, which are fixed inside the plastering frame. The front end of the lower trowel shaft is connected to the second lower trowel gas spring. The upper shaft hole of the lower trowel is connected to the rod end of the first lower trowel gas spring and the shaft hole of the lower trowel linkage. The rear section of the lower trowel linkage is embedded in its track bearing, and the track bearing is mounted on the plastering frame.

[0010] Preferably, the linkage mechanism includes an upper trowel linkage mechanism, which includes an upper trowel gas spring hinged to the upper part of the rear side of the upper trowel, an upper trowel connecting rod disposed on the plastering frame, a hook disposed at the rear end of the upper trowel connecting rod, a torsion spring disposed between the hook and the upper trowel connecting rod, a tension spring disposed between the upper trowel connecting rod and the plastering frame, and a plastering upper stop limit switch disposed on the plastering frame. The rear end of the upper trowel gas spring is connected to the upper trowel connecting rod, and the tension spring is assembled at the lower end of the upper trowel connecting rod.

[0011] Preferably, the linkage mechanism includes a nozzle plate linkage mechanism, which includes a nozzle plate bracket, a nozzle plate, a vertical linkage, a nozzle plate connecting rod, a connecting rod stop frame, and a second torsion spring. The upper end of the vertical linkage is connected to the nozzle plate, and the lower end is connected to the lower plastering plate pivot. The rear end of the nozzle plate is connected to the nozzle plate connecting rod. The lower section of the nozzle plate connecting rod has a slot, and a rolling bearing is fitted near the slot. Under the action of the second torsion spring, the nozzle plate connecting rod is driven to engage with the horizontal brace on the plastering frame.

[0012] Preferably, a vibration motor is provided on the rear side of the upper trowel.

[0013] Preferably, the automatic plastering mechanism is installed on the main frame and the telescopic frame mechanism, and a mortar pumping limit switch adapted to the nozzle plate connecting rod and an upper plastering plate connecting rod contact plate adapted to the upper plastering plate connecting rod are provided on the top of the main frame and the telescopic frame mechanism.

[0014] Preferably, the bottom of the main frame and telescopic frame mechanism is provided with a reset contact plate adapted to the nozzle plate connecting rod, a lower stop limit switch trigger linkage plate adapted to the plastering frame, and a plastering lower stop limit switch adapted to the plastering frame.

[0015] Preferably, the bottom of the main frame and telescopic frame mechanism is provided with an electric push rod, and the electric push rod is connected to an unlocking torsion shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a cleverly designed, labor-saving, and reliable automatic plastering mechanism. The mechanism employs a mortar pump feeding method, with the mortar nozzle at the front end moving left and right under the drive of a reciprocating screw. Mortar is supplied layer by layer evenly, effectively preventing excessive concentration and solving the problem of feeding mortar onto higher walls, which is difficult to achieve manually. The upper and lower plastering plates and nozzle plates in the plastering mechanism achieve mechanical linkage between multiple links through their matching linkage mechanism, causing corresponding changes in the inclination angle of the plastering plates. This allows the plastering mechanism to plaster the wall surface when moving upwards and to smooth and level the plastered surface when moving downwards. This improves the reliability of the mechanism and can withstand harsh working environments at construction sites. In addition, a vibration compaction mechanism is included to ensure a tight bond between the mortar and the wall surface, improving the density and uniformity of the plaster, thus increasing construction efficiency and quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the plastering mechanism.

[0018] Figure 2 This is a schematic diagram of the lower trowel's rotating shaft.

[0019] Figure 3 This is a partial sectional view of the lower trowel.

[0020] Figure 4 This is a partial view of the plastering mechanism.

[0021] Figure 5 yes Figure 4 Enlarged view of part A.

[0022] Figure 6 This is a schematic diagram of the plastering mechanism in its downward state.

[0023] Figure 7This is a schematic diagram of the plastering mechanism's layout within the entire machine.

[0024] Figure 8 This is a schematic diagram of the main frame and telescopic frame mechanism.

[0025] Figure 9 This is a top view of the main frame and telescopic frame mechanism.

[0026] Figure 10 This is a bottom schematic diagram of the main frame and telescopic frame mechanism.

[0027] In the attached diagram, the following numbers are referenced: 101. Longitudinal column of the main frame; 102. Circular tube column of the main frame; 103. Sliding sleeve; 104. Longitudinal column of the telescopic mechanism; 105. Nested circular tube of the telescopic mechanism; 106. Plastering winch; 107. Telescopic frame winch; 108. Plastering lower stop limit switch; 109. Lower stop limit switch trigger linkage plate; 110. Sprayer plate reset contact plate; 111. Electric push rod; 11 2. Unlocking torsion shaft; 113. Pressure sensor; 114. Mortar pump limit switch; 115. Upper plastering board connecting rod contact plate; 116. Horizontal guide rail; 117. Leveling electric cylinder; 118. Attitude sensor; 119. AGV wheel; 120. V-wheel; 121. Wheel; 500. Plastering mechanism; 501. Plastering frame; 502. Plastering frame cross brace; 503. Plastering frame connecting block; 504. Frame traveling wheel; 5 5. Plastering frame protrusion; 506. Lifting wheel; 507. Lower plastering plate; 508. Lower plastering plate connecting rod; 509. Lower plastering plate gas spring one; 510. Lower plastering plate pivot; 511. Lower plastering plate gas spring two; 512. Upper plastering plate; 513. Upper plastering plate gas spring; 514. Upper plastering plate connecting rod; 515. Hook; 516. Torsion spring one; 517. Tension spring; 518. Plastering upper stop limit switch; 519. Vibration motor 520. Sprayer plate bracket; 521. Screw assembly; 522. Sprayer plate; 523. Sprayer head; 524. Feed pipe; 525. Vertical connecting rod; 526. Lower trowel shaft connecting plate; 527. Sprayer plate connecting rod; 528. Torsion spring II; 529. Mud guard plate; 530. Sealing plate; 531. Trowel hinge; 532. Sprayer plate connecting rod retaining frame; 533. Rolling bearing; 534. Lower trowel connecting rod track bearing. Detailed Implementation

[0028] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0029] Example: As attached Figure 1-10As shown, the present invention describes an automatic plastering mechanism. The automatic plastering mechanism 500 mainly consists of a plastering frame 501, a lower plastering plate 507, an upper plastering plate 512, a spray nozzle plate 522, and its supporting linkage mechanism, mortar supply mechanism, and vibration compaction mechanism. Driven by its wire hoisting mechanism, the wire rope drives the lifting wheel 506, causing the plastering mechanism to move up and down along the longitudinal column 101 of the main frame and its telescopic frame mechanism to complete the specific plastering work. To avoid the mortar overflowing from both sides during the plastering process and causing waste, mudguards 529 are installed on both sides of the mechanism. In addition, a sealing plate 530 is also installed to keep the mechanism clean.

[0030] The main frame and telescopic frame mechanism provide guide rail support for the automatic plastering mechanism 500 in the up and down directions. To facilitate understanding of the working state of the automatic plastering mechanism 500 during up and down movement, the main frame and telescopic frame mechanism are briefly introduced as follows: Figure 8-10 As shown, the longitudinal columns 101 of the main frame are symmetrically arranged carbon steel rectangular tubes, providing telescopic guidance for the telescopic frame above. The telescopic frame mechanism mainly consists of a sleeve mechanism and an upper telescopic lifting assembly. The lifting assembly also consists of longitudinal columns 104, a transverse rectangular tube frame at the top, rubber blocks, etc. The longitudinal columns 104 in the lifting assembly are embedded in the inner wall of the longitudinal columns 101 of the main frame. On the other hand, the main component of the sleeve mechanism is the sliding sleeve 103, which is a section of carbon steel rectangular tube. Its specifications and cross-sectional dimensions are the same as those of the longitudinal columns 101 of the main frame, and they are arranged symmetrically from left to right. The main purpose of the sleeve mechanism is to compensate for the cross-sectional difference between the longitudinal columns 101 of the main frame below and the longitudinal columns 104 of the lifting assembly above. Hooks and return springs are provided on the sleeve mechanism to better connect the plastering assembly for smooth operation between the main frame and the telescopic lifting frame. To enhance the stability of the plastering mechanism during vertical movement, a longitudinal circular pipe 102 was added between the two longitudinal columns on the left and right sides of the main frame. Correspondingly, a nested circular pipe 105 was also installed in the telescopic frame. In this way, the plastering device moves vertically under the drive of the wire winch mechanism during plastering, thereby fulfilling the plastering requirements of walls at different heights.

[0031] like Figure 1 As shown, the plastering frame 501 is the main frame of the plastering mechanism. Its two side plates are symmetrically arranged. The front end is connected to components such as the upper plastering plate 512, the lower plastering plate 507, and the spray nozzle plate 522. An angle iron is welded to the upper part of the rear end, and a plastering frame cross brace 502 is welded to the lower part of the rear end. The frame lifting wheel 506 is arranged on the plastering frame cross brace, and the frame traveling wheel 504 is installed on the side plate. In this way, the lifting wheel 506 can drive the plastering frame 501 to move up and down under the drive of the wire rope.

[0032] like Figure 1 , Figure 2 , Figure 3As shown, the lower trowel linkage mechanism in the plastering mechanism 500 mainly consists of a lower trowel 507, a lower trowel linkage 508, a lower trowel gas spring 509, a lower trowel shaft 510, a shaft connecting plate 526, and a lower trowel gas spring 511. The lower trowel shaft connecting plate 526 is symmetrically arranged on the left and right sides and is fixed to the inside of the plastering frame 501 by bolts. Figure 2 As shown, the lower trowel shaft 510 is a welded component, with a main body being a smooth shaft, a connecting plate in the middle, and ear plates on both sides. It can rotate around the shaft hole below the shaft connecting plate 526 under the action of the nozzle plate vertical connecting rod 525. The front end of the lower trowel shaft 510 is connected to a second gas spring 511. The rod end of the second gas spring 511 is connected to the lower trowel 507. The upper shaft hole of the lower trowel 507 is connected to the rod end of the first gas spring 509 and the shaft hole of the trowel connecting rod 508. The rear section of the lower trowel connecting rod 508 is embedded in its track bearing 534, which is a bolt bearing assembled on the plastering frame 501. The end of the first gas spring 509 is connected to the plastering frame 501 by bolts. The connecting hole is an oblong hole, allowing for adjustment of the spacing during assembly. Once the position is appropriate, the bolts are tightened. At this point, the lower trowel connecting rod mechanism is assembled. Its initial state, i.e., the upward plastering state of the plastering mechanism, is shown in the view below. Figure 4 The state shown.

[0033] like Figure 1 As shown, the upper trowel linkage mechanism is mainly composed of upper trowel 512, upper trowel gas spring 513, upper trowel linkage 514, hook 515, torsion spring 516, tension spring 517, and plastering upper stop limit switch 518. The upper trowel 512 and the lower trowel 507 are connected by trowel hinge 531.

[0034] The lower end of the upper trowel connecting rod 514 is equipped with a tension spring 517, and the front end is connected to an upper trowel gas spring 513. The rod end of the gas spring 513 is connected to the upper trowel 512. In the initial state, that is, in the upward troweling state of the troweling mechanism, its view is as follows. Figure 4 As shown, under the action of the tension spring 517, the upper trowel 512 rotates backward around the trowel hinge 531 at a certain angle via the linkage mechanism, so that a certain amount of mortar can be stored during plastering; a hook 515 and a torsion spring 516 are connected to the rear end of the upper trowel connecting rod 514.

[0035] like Figure 1 As shown, the nozzle plate linkage mechanism mainly consists of nozzle plate bracket 520, nozzle plate 522, vertical connecting rod 525, nozzle plate connecting rod 527, connecting rod stop frame 532, and torsion spring 528.

[0036] like Figure 4 , Figure 5 , Figure 6As shown, the upper end of the vertical connecting rod 525 is connected to the nozzle plate 522, and the lower end is connected to the lower plastering plate rotating shaft 510. The rear end of the nozzle plate 522 is connected to the nozzle plate connecting rod 527. The lower section of the nozzle plate connecting rod 527 is provided with a slot, and a rolling bearing 533 is installed near the slot. Under the action of the torsion spring 528, the nozzle plate connecting rod 527 is driven to engage with the horizontal support 502 on the plastering frame. In the initial state, i.e., during upward plastering, it is... Figure 4 In the indicated state, the horizontal brace 502 on the plastering frame is engaged in the slot of the nozzle plate connecting rod 527. At this time, the nozzle plate 522 tilts upward to facilitate the supply of mortar to the mortar nozzles 523 located on the nozzle plate. When plastering is completed, the nozzle plate connecting rod 527 will touch the mortar pump limit switch 114, stopping the supply of mortar. At the same time, the nozzle plate connecting rod 527 will be subjected to a downward reverse force, causing the slot below to disengage from the horizontal brace 502 on the plastering frame. The connecting rod stop frame 532 can effectively limit the excessive disengagement of the nozzle plate connecting rod 527. In this way, the nozzle plate 522 rotates downward along the pivot of its nozzle plate bracket 520, so that the mortar nozzles 523 located on the nozzle plate 522 change from the original downward tilted state to the upward tilted state, which can effectively prevent mortar leakage.

[0037] The mortar supply mechanism mainly includes components such as a reciprocating screw assembly 521, a mortar nozzle 523, and a feed pipe 524. The mortar nozzle 523 is connected to the screw, and the motor drives the screw to move left and right. In this way, the mortar is supplied layer by layer evenly during wall plastering, which can effectively avoid the mortar from being too concentrated. On the other hand, it also solves the problem of difficult material feeding when plastering high places by manual feeding.

[0038] The main components of the vibration compaction mechanism are the vibration motor 519 and its mounting plate, which are installed behind the upper plastering board. The vibration motor 519 is responsible for providing high-frequency vibration to the plastering board. During the plastering operation, the excitation force of the vibration motor can ensure that the mortar is tightly bonded to the wall surface, thereby improving the density and uniformity of the plastering.

[0039] The upper plastering board 512, the lower plastering board 507, the spray nozzle plate 522, and their corresponding linkage mechanisms, through multi-link mechanical linkage, cause the angle of the plastering board to change accordingly during the up and down process of plastering, so as to achieve the optimal plastering action.

[0040] Before plastering, the moving wheels 121 bring the plastering machine closer to the transverse guide rail 116, and the V-wheels 120 on both sides of the frame are engaged with the transverse guide rail 116. The attitude sensor 118 in the automatic leveling transverse mechanism can detect whether the vehicle body is level. If the level is not high enough, the control system can gradually level the vehicle body through the leveling cylinder 117. Then, the telescopic lifting assembly is gradually lifted to the roof through its wire winch mechanism. The lifting force is set by the pressure sensor 113. Anti-slip rubber pads are installed on the top of the lifting assembly to increase the stability support during plastering.

[0041] During plastering, the plastering mechanism moves vertically along the frame using its matching wire hoisting mechanism, and in conjunction with the sleeve assembly, it can meet the plastering needs of walls at different heights.

[0042] During upward plastering, the initial states of the upper plastering plate 512 and the lower plastering plate 507 are as follows: Figure 4 As shown, the upper trowel 512 is tilted at a certain angle, while the lower trowel 507 is in a vertical position. The upper trowel 512 is tilted at a certain angle to ensure smooth upward movement and prevent scraping, while also storing a certain amount of mortar. The lower trowel 507 is in a vertical position to better smooth the mortar.

[0043] The plastering program is started via the control panel. Mortar is sprayed from the nozzle 523 through the feed pipe 524. Driven by the reciprocating screw assembly 521, the mortar moves left and right to be evenly sprayed onto the wall surface layer by layer. At the same time, the upper plastering board 512 and the lower plastering board 507 are gradually raised under the drag of their hoisting mechanism. During the plastering process, the vibration motor 519 is started to provide high-frequency vibration to the plastering board. The excitation force of the vibration motor 519 can ensure that the mortar is tightly bonded to the wall surface, improving the density and uniformity of the plastering.

[0044] As the plastering mechanism 500 gradually rises, when it approaches the top of the plastering area, the nozzle plate connecting rod 527 first touches the mortar pumping limit switch 114 on the lifting frame, and the pump stops supplying mortar. At this time, the plastering mechanism 500 has not yet stopped, and the mechanism will continue to rise.

[0045] On the one hand, the nozzle plate connecting rod 527 will be subjected to a downward reverse force, causing the lower slot to detach from the horizontal support 502 on the plastering frame. The connecting rod stop frame 532 can effectively limit the excessive detachment of the nozzle plate connecting rod 527. In this way, the nozzle plate 522 rotates downward along the rotation axis of its nozzle plate bracket 520, so that the mortar nozzle 523 located on the nozzle plate 522 changes from the original downward angle to the upward angle, which can effectively prevent mortar leakage.

[0046] On the other hand, as the plastering mechanism continues to rise, the top of the upper plastering plate connecting rod 514 will slowly approach the upper plastering plate connecting rod contact plate 115 on the lifting frame. The upper plastering plate connecting rod 514 will then slowly press down, and the hook 515 at the rear end will hang the connecting rod 514 on the plastering frame 501. At this time, the upper plastering plate 512 will change from its original inclined state to a vertical state, as shown in the view below. Figure 6 As shown. The mortar in the inclined angle is also pressed firmly onto the wall surface by the trowel. At the same time, the upper trowel connecting rod 514 will also trigger the upper stop limit switch 518, which can control the trowel hoist motor 106 to stop rotating. Thus, the upward troweling process is completed.

[0047] Simultaneously, under the control of the plastering process, the plastering hoisting mechanism drives the plastering device downwards. Due to the downward pressure of the nozzle plate vertical connecting rod 525, the lower plastering plate 507 rotates its shaft 510, and under the drive of its linkage mechanism, it changes from its original vertical plastering state to a plastering state with a certain angle. Combined with this, the upper plastering plate 512 changes from its original angled state to a vertical state. The states of the upper and lower plastering plates are as follows: Figure 6 As shown, the downward process does not involve spraying mortar; it is essentially a process of compacting and smoothing the plastered surface from the upward process.

[0048] As the plastering mechanism 500 approaches the bottom of the frame, the nozzle plate connecting rod 527 gradually approaches the reset contact plate 110 in the main frame. The horizontal support 502 on the plastering frame will gradually be inserted into the slot below the nozzle plate connecting rod 527, so that the nozzle plate 522 drives the nozzle assembly to complete the reset.

[0049] At the same time, the vertical connecting rod 525 connected to the nozzle plate 522 drives the lower squeegee shaft 510 to rotate in the opposite direction. Driven by its connecting rod mechanism, the lower squeegee 507 rotates from the tilted state when it is descending to the initial vertical state, thus completing the reset of the component.

[0050] As the plastering mechanism 500 continues to descend, when it is about to reach the bottom of the frame, the lower end face of the plastering frame 501 in the plastering mechanism 500 will gradually approach and touch the lower stop limit switch trigger linkage plate 109 in the main frame, thereby triggering the plastering lower stop limit switch 108. Under the action of this limit switch, the plastering hoist motor 106 stops, and the descent of the plastering is completed.

[0051] Finally, under the control of the plastering process, the electric push rod 111 pulls the unlocking torsion shaft 112, causing it to move the hook 515 on the upper plastering plate connecting rod 514 and disengage it from the plastering frame 501. The upper plastering plate connecting rod 514 springs upward under the pull of the tension spring 517. Thus, driven by the upper plastering plate connecting rod mechanism, the upper plastering plate 512 changes from its current vertical state to its initial state with a certain angle, completing the reset of the upper plastering plate assembly. This completes the plastering work on one wall.

Claims

1. An automatic plastering mechanism, characterized in that: The system includes a plastering frame (501), a plastering assembly disposed on the front side of the plastering frame (501), and a linkage mechanism for mounting the plastering assembly on the plastering frame (501). The plastering assembly includes a lower plastering plate (507), an upper plastering plate (512), and a nozzle plate (522) arranged sequentially from bottom to top. The nozzle plate (522) is provided with a mortar nozzle (523) and a translation mechanism for driving the mortar nozzle (523) to move left and right. The lower plastering plate (507) is hinged to the upper plastering plate (512). The linkage mechanism adjusts the inclination angle of the lower plastering plate (507) and the upper plastering plate (512). When plastering upwards, the upper plastering plate (512) extends obliquely upwards in a direction away from the wall, and the lower plastering plate (507) is in a vertical state. When plastering downwards, the lower plastering plate (507) extends obliquely downwards in a direction away from the wall, and the upper plastering plate (512) is in a vertical state.

2. The automatic plastering mechanism according to claim 1, characterized in that: The upper trowel (512) is provided with mudguards (529) on both sides, and the plastering frame (501) is provided with sealing plates (530) on both sides.

3. The automatic plastering mechanism according to claim 1, characterized in that: An angle iron is welded to the upper rear end of the plastering frame (501), and a plastering frame cross brace (502) is welded to the lower rear end. A frame lifting wheel (506) is arranged on the plastering frame cross brace (502), and a frame traveling wheel (504) is installed on the side plate of the plastering frame (501).

4. The automatic plastering mechanism according to claim 1, characterized in that: The linkage mechanism includes a lower trowel linkage mechanism, which includes a lower trowel linkage (508) hinged to the rear side of the top of the lower trowel (507), a lower trowel pivot (510) rotatably mounted on the plastering frame (501), and a second lower trowel gas spring (511) hinged to the rear side of the bottom of the lower trowel (507). A first lower trowel gas spring (509) is provided at the rear end of the lower trowel linkage (508), and the rear end of the first lower trowel gas spring (509) is connected to the plastering frame (501) by bolts. Next, a shaft connecting plate (526) is symmetrically provided on the lower trowel shaft (510). The shaft connecting plate (526) is fixed inside the plastering frame (501). The front end of the lower trowel shaft (510) is connected to the second lower trowel gas spring (511). The upper shaft hole of the lower trowel (507) is connected to the rod end of the first lower trowel gas spring (509) and the shaft hole of the lower trowel connecting rod (508). The rear section of the lower trowel connecting rod (508) is embedded in its track bearing (534). The track bearing (534) is assembled on the plastering frame (501).

5. An automatic plastering mechanism according to claim 1, characterized in that: The linkage mechanism includes an upper trowel linkage mechanism, which includes an upper trowel gas spring (513) hinged to the upper part of the rear side of the upper trowel (512), an upper trowel connecting rod (514) set on the plastering frame (501), a hook (515) set at the rear end of the upper trowel connecting rod (514), a torsion spring (516) set between the hook (515) and the upper trowel connecting rod (514), a tension spring (517) set between the upper trowel connecting rod (514) and the plastering frame (501), and a plastering upper stop limit switch (518) set on the plastering frame (501). The rear end of the upper trowel gas spring (513) is connected to the upper trowel connecting rod (514), and the tension spring (517) is assembled at the lower end of the upper trowel connecting rod (514).

6. An automatic plastering mechanism according to claim 1, characterized in that: The linkage mechanism includes a nozzle plate linkage mechanism, which includes a nozzle plate bracket (520), a nozzle plate (522), a vertical connecting rod (525), a nozzle plate connecting rod (527), a connecting rod stop frame (532), and a second torsion spring (528). The upper end of the vertical connecting rod (525) is connected to the nozzle plate (522), and the lower end is connected to the lower trowel shaft (510). The rear end of the nozzle plate (522) is connected to the nozzle plate connecting rod (527). The lower section of the nozzle plate connecting rod (527) is provided with a slot, and a rolling bearing (533) is installed near the slot. Under the action of the second torsion spring (528), the nozzle plate connecting rod (527) is driven to engage with the horizontal support (502) on the plastering frame.

7. An automatic plastering mechanism according to claim 1, characterized in that: A vibration motor is provided on the rear side of the upper trowel (512).

8. An automatic plastering mechanism according to claim 6, characterized in that: The automatic plastering mechanism is installed on the main frame and the telescopic frame mechanism. At the top of the main frame and the telescopic frame mechanism, there is a mortar pumping limit switch (114) adapted to the nozzle plate connecting rod (527) and an upper plastering plate connecting rod contact plate (115) adapted to the upper plastering plate connecting rod (514).

9. An automatic plastering mechanism according to claim 8, characterized in that: The bottom of the main frame and telescopic frame mechanism is provided with a reset contact plate (110) adapted to the nozzle plate connecting rod (527), a lower stop limit switch trigger linkage plate (109) adapted to the plastering frame (501), and a plastering lower stop limit switch (108) adapted to the plastering frame (501).

10. An automatic plastering mechanism according to claim 9, characterized in that: The bottom of the main frame and telescopic frame mechanism is provided with an electric push rod (111), and the electric push rod (111) is connected to an unlocking torsion shaft (112).

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