A device for synchronous construction of external corner protection and plastering

Abstract

The application discloses a device for synchronous construction of external corner protection and plastering, which comprises a lower supporting plate, an upper supporting plate and a plurality of external corner protection plates, a limiting baffle is fixed on the lower supporting plate and the upper supporting plate near the wall surface, a limiting supporting column and two lifting guide supporting columns are arranged between the lower supporting plate and the upper supporting plate, and an automatic plastering mechanism is installed between the two lifting guide supporting columns in a lifting mode. The device adopts an oil-controlled clutch mechanism in a pure hydraulic linkage mode, and only when the spatula moves and is scraped, the resistance received by the spatula overcomes the pulling force of the second elastic telescopic rod to generate floating, drives the hydraulic cylinder piston rod to extend to form negative pressure, sucks oil to make the hydraulic piston go down to trigger the clutch to be combined, power transmission is realized to the screw rod to start feeding; when the spatula stops moving, the second elastic telescopic rod is reset to pull the spatula to reset, the oil pressure is restored, the clutch is separated, and the feeding is stopped instantaneously. The device realizes accurate synchronous control of feeding when moving and stopping feeding.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to an integrated device for simultaneous corner protection and plastering. Background Technology

[0002] During the construction of building walls, the external corners of the walls are weak points in the structure and are prone to damage and chipping when subjected to external impacts. Therefore, corner protection boards are usually installed at the external corners to improve the structural strength and impact resistance of the external corners. At the same time, plastering and leveling work is required at the external corners to ensure that the wall surface is dimensionally regular and has a smooth appearance.

[0003] Currently, corner protection and plastering are mostly carried out in a step-by-step manner: first, the corner protection panels are manually positioned and fixed to the corners of the wall section by section; after the panels are anchored, construction workers then set up a scaffold to carry out manual plastering. This construction method has many drawbacks: 1. The two processes of fixing the protective board and plastering are independent of each other, requiring repeated erection of the construction frame, which makes the construction process cumbersome, the construction period long, and the work efficiency low. 2. Manual positioning of protective panels relies heavily on the experience of construction workers, which can easily lead to problems such as verticality deviation and misalignment of splicing sections. In addition, uneven force during manual tightening can easily cause the protective panels to twist and deform, directly affecting the quality of the external corner forming and the protective effect. 3. Manual plastering at external corners is difficult, and the thickness and smoothness of the plaster depend entirely on the worker's skill. It is easy to have quality defects such as uneven plastering on both sides of the external corner, poor surface smoothness, and local hollow areas and missing plaster. In addition, plastering at heights poses certain safety hazards.

[0004] Therefore, there is an urgent need in this field to develop an integrated device for simultaneous construction of external corner protection and plastering, in order to solve the technical problems of cumbersome construction procedures, low positioning accuracy, unstable plastering quality, and poor equipment environmental adaptability in the existing technology. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides an integrated device for simultaneous corner protection and plastering.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An integrated device for simultaneous construction of external corner protection and plastering includes a lower support plate, an upper support plate, and multiple external corner protection plates. Limiting baffles are fixed on the lower support plate and the upper support plate near the wall. A limiting support column and two lifting guide support columns are provided between the lower support plate and the upper support plate. An automatic plastering mechanism is installed between the outer sides of the two lifting guide support columns. The corner protection plate is clipped onto the corner of the wall and embedded in the cement slurry layer of the corner. Multiple protection plate compression limiting mechanisms are installed at equal intervals on the limiting support column, and each of the multiple protection plate compression limiting mechanisms corresponds to one of the multiple corner protection plates. The protective plate compression limiting mechanism includes a hexagonal column, which horizontally moves through a hexagonal guide sleeve on the limiting support column. An adjusting bolt is rotatably installed on one side of the limiting support column via a first bracket. A threaded hole is opened at one end of the hexagonal column, and the adjusting bolt extends into the threaded hole. A compression positioning component is installed at the end of the hexagonal column away from the adjusting bolt, and the compression positioning component matches the shape of the external corner protective plate. A winch is installed at the top of the upper support plate, and the winch's rope is connected to the automatic plastering mechanism.

[0007] Preferably, the corner protection plates are connected in sequence, one end of the corner protection plate is provided with a snap-fit ​​protrusion, and the other end is provided with a snap-fit ​​recess. The contours of the snap-fit ​​protrusion and the snap-fit ​​recess match each other, and the snap-fit ​​protrusion of the upper corner protection plate can be embedded in the snap-fit ​​recess of the lower corner protection plate to form a limiting fastening.

[0008] Preferably, the hexagonal prism is provided with a scale, and the extrusion positioning component includes a first elastic telescopic rod. The fixed part of the first elastic telescopic rod is fixed to the hexagonal prism, and a curved top plate is fixed to the telescopic end of the first elastic telescopic rod. Wing plates are hinged to both sides of the curved top plate. First push rods are fixed to both sides of the first elastic telescopic rod. A connecting ear is provided on the side of the wing plate near the first elastic telescopic rod. An oval hole is opened on the connecting ear. A hanging post is fixed to the end of the first push rod near the wing plate. The hanging post passes through the connecting ear through the oval hole.

[0009] Preferably, the automatic plastering mechanism includes a lifting bracket, which is slidably mounted on a lifting guide support column. A mud storage tank is fixed on the lifting bracket via a second bracket, and a plastering trowel assembly is mounted on the lifting bracket via a third bracket. The main body of the plastering trowel assembly is a right-angled folded plate, with the lower edge of the right-angled folded plate extending downward and equipped with a trowel. A mortar receiving cavity is formed inside the right-angled folded plate. A mortar supply pipe is connected to the mud storage tank, and one end of the mortar supply pipe extends into the mortar receiving cavity and is connected to a mortar distributor.

[0010] Preferably, the spatula is raised and floated at the bottom of the right-angle folding plate, and the inside of the right-angle folding plate is provided with a mudguard, and the outside of the movable connection between the right-angle folding plate and the spatula is covered with a corrugated protective sleeve.

[0011] Preferably, multiple second elastic telescopic rods are fixed to the back of the right-angle folding plate, the fixed part of the second elastic telescopic rod is fixedly connected to the right-angle folding plate, and the telescopic part of the second elastic telescopic rod is fixedly connected to the spatula.

[0012] Preferably, a hydraulic cylinder is fixed to the back of the right-angled folding plate. The piston rod of the hydraulic cylinder is fixed to the trowel. The hydraulic cylinder is provided with a first oil guide port. The bottom end of the mud storage tank is provided with a slurry discharge port. The end of the mortar supply pipe away from the mortar distributor is connected to the slurry discharge port. A screw is rotatably installed inside the slurry discharge port. The mud storage tank is provided with a stirring main shaft. An oil control clutch is provided between the bottom end of the stirring main shaft and the top end of the screw. The oil control clutch is connected to the first oil guide port through an oil guide pipe.

[0013] Preferably, the screw is hollow inside, and the bottom end of the screw extends to the outside of the discharge port and is connected to a rotary joint. A second oil guide port is connected to the rotary joint, and the second oil guide port is connected to the first oil guide port through an oil guide pipe. A hydraulic piston is installed inside the screw, and the top end of the screw rotates and extends into the interior of the oil-controlled clutch. The oil-controlled clutch is a claw clutch, and the outer shell of the oil-controlled clutch is fixed to the bottom end of the stirring shaft. A second push rod is fixed to the top end of the hydraulic piston. The second push rod is in vertical and horizontal cooperation with the inner wall of the screw. An annular driven clutch disc is fixed on the inner wall of the oil-controlled clutch. The top end of the second push rod passes through the annular driven clutch disc and is fixed to the driving clutch disc. The driving clutch disc has a meshing claw on its end face facing the annular driven clutch disc, and the annular driven clutch disc is correspondingly provided with a matching meshing groove.

[0014] Preferably, a rotary motor is fixed to the top of the mud storage tank, and the output shaft of the rotary motor is fixed to the top of the stirring main shaft.

[0015] Preferably, the top of the mud storage tank is provided with a cleaning port on one side of the rotary motor, and stirring blades are installed on the outside of the stirring main shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves precise and consistent clamping of the corner protection panel along the length of the corner using a quantifiable and adjustable compression limiting mechanism. A scale on the hexagonal post, in conjunction with adjusting bolts, allows the operator to accurately read and quantify the compression depth and pressure, ensuring consistent compression of the protection panel by each compression positioning component. Compared to traditional manual pressing and positioning methods, this invention improves positioning accuracy and significantly enhances the fit between the protection panel and the wall.

[0017] 2. The linkage structure between the curved top plate and the wing plate enables precise, step-by-step clamping by first positioning the corner and then pressing the wing plate, ensuring uniform stress and accurate positioning across all parts of the protective plate and improving installation precision. The step-by-step separation method, where the wing plate rotates first to detach and the curved top plate then moves horizontally to detach during retraction, effectively reduces adhesion to the solidified mortar layer and avoids disturbance to the already anchored protective plate.

[0018] 3. Employing a purely hydraulic linkage oil-controlled clutch mechanism, the trowel only floats when the resistance it experiences overcomes the tension of the second elastic telescopic rod during its movement and scraping motion. This causes the hydraulic cylinder piston rod to extend, creating negative pressure that draws in oil, causing the hydraulic piston to descend and triggering the clutch to engage. Power is then transmitted to the screw to begin feeding. When the trowel stops moving, the second elastic telescopic rod immediately resets, pulling the trowel back to its original position. The oil pressure recovers, the clutch disengages, and feeding stops instantly. This achieves precise synchronous control, where feeding occurs as soon as the trowel moves and stopping occurs as soon as it stops. 4. The second elastic telescopic rod simultaneously serves two functions: maintaining clutch disengagement under normal conditions and automatically resetting after operation. Its elastic force acts as a trigger threshold; floating material feeding is only triggered when the resistance encountered by the trowel during movement exceeds this threshold, avoiding erroneous feeding caused by slight contact or equipment vibration. When movement stops, the elastic force automatically pulls the trowel back to its original position and cuts off the material supply, requiring no manual intervention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a first-view perspective perspective view of the present invention; Figure 2 This is a second-view perspective perspective view of the present invention; Figure 3 This is a schematic diagram of the external corner protection plate structure of the present invention; Figure 4 This is a schematic diagram of the protective plate extrusion limiting mechanism of the present invention; Figure 5 for Figure 4 Enlarged detail image of position A in the middle; Figure 6 This is a first-view structural diagram of the extrusion positioning component of the present invention; Figure 7 This is a second-view structural diagram of the extrusion positioning component of the present invention; Figure 8 This is a schematic diagram of the automatic plastering mechanism of the present invention; Figure 9 This is a first-view perspective perspective view of the plastering knife assembly of the present invention; Figure 10 This is a second-view perspective perspective view of the plastering knife assembly of the present invention; Figure 11 This is a cross-sectional view of the mud storage tank of the present invention; Figure 12 for Figure 11Enlarged detail image of position B in the middle; Figure 13 for Figure 11 Enlarged detail image of the C position; In the diagram: 1. Lower support plate; 101. Upper support plate; 2. External corner protection plate; 102. Lifting guide support column; 103. Limiting support column; 104. Limiting baffle; 3. Automatic plastering mechanism; 4. Winch; 201. Snap-fit ​​protrusion; 202. Snap-fit ​​recess; 1031. Hexagonal column; 1032. First bracket; 1033. Adjusting bolt; 1034. First elastic telescopic rod; 1035. Curved top plate; 1036. Wing plate; 1037. Connecting lug; 1038. First push rod; 1039. Hanging column; 301. Lifting bracket; 302. Third bracket; 303. Mud storage tank 5. Right-angle folding plate; 501. Trowel; 502. Mudguard; 503. Mortar distributor; 504. Mortar supply pipe; 505. Corrugated protective sleeve; 506. Hydraulic cylinder; 5061. First oil guide port; 507. Second elastic telescopic rod; 6. Oil-controlled clutch; 601. Annular driven clutch disc; 7. Screw; 701. Hydraulic piston; 702. Second push rod; 703. Rotary joint; 704. Second oil guide port; 705. Active clutch disc; 3031. Addition and cleaning port; 3032. Slurry discharge port; 3033. Mixing main shaft; 3034. Mixing blades; 3035. Rotary motor. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1 Reference Figure 1-13 An integrated device for simultaneous construction of external corner protection and plastering includes a lower support plate 1, an upper support plate 101, and multiple external corner protection plates 2. Limiting baffles 104 are fixed on the lower support plate 1 and the upper support plate 101 near the wall. A limiting support column 103 and two lifting guide support columns 102 are provided between the lower support plate 1 and the upper support plate 101. An automatic plastering mechanism 3 is installed between the outer sides of the two lifting guide support columns 102. The corner protection plate 2 is clipped onto the corner of the wall and embedded in the cement slurry layer of the corner. Multiple protection plate compression limiting mechanisms are installed at equal intervals on the limiting support column 103, and the multiple protection plate compression limiting mechanisms correspond one-to-one with the multiple corner protection plates 2. The protective plate compression limiting mechanism includes a hexagonal column 1031, which horizontally moves through a hexagonal guide sleeve on the limiting support column 103. An adjusting bolt 1033 is rotatably installed on one side of the limiting support column 103 via a first bracket 1032. A threaded hole is opened at one end of the hexagonal column 1031, and the adjusting bolt 1033 extends into the threaded hole. A compression positioning component is installed at the end of the hexagonal column 1031 away from the adjusting bolt 1033. The compression positioning component matches the shape of the external corner protective plate 2. A hexagonal column 1031 penetrates a hexagonal guide sleeve. The hexagonal structure prevents the column from rotating during axial movement, ensuring that the orientation of the extrusion positioning element is always aligned with the protective plate. An adjusting bolt 1033 engages with a threaded hole at the end of the hexagonal column 1031; rotating the adjusting bolt 1033 drives the hexagonal column 1031 to move axially forward and backward. A scale on the hexagonal column 1031 allows the operator to visually read the extrusion depth, ensuring that the extrusion positioning elements exert consistent pressure on the protective plate.

[0023] A winch 4 is installed at the top of the upper support plate 101, and the rope of the winch 4 is connected to the automatic plastering mechanism 3. The lower support plate 1 and the upper support plate 101 form a rigid frame, and the limiting baffle 104 conforms to the wall surface to achieve the overall positioning reference of the device. The limiting support column 103 provides a unified installation axis for multiple protective plate extrusion limiting mechanisms, ensuring that each extrusion positioning component works in coordination. The lifting guide support column 102 provides a precise lifting guide rail for the automatic plastering mechanism 3. The winch 4 pulls the automatic plastering mechanism 3 up and down at a uniform speed along the lifting guide support column 102 via ropes. Among them, the corner protection plates 2 are connected to each other in sequence. One end of the corner protection plate 2 is provided with a snap-fit ​​protrusion 201 and the other end is provided with a snap-fit ​​recess 202. The contours of the snap-fit ​​protrusion 201 and the snap-fit ​​recess 202 match each other. The snap-fit ​​protrusion 201 of the upper corner protection plate 2 can be embedded in the snap-fit ​​recess 202 of the lower corner protection plate 2 to form a limiting fastening. The corner protection panel 2 adopts a segmented design. Adjacent protection panels are locked together by the engagement of the locking protrusion 201 and the locking recess 202. This locking structure restricts the relative displacement of adjacent protection panels in the direction perpendicular to the wall, as well as the relative sliding in the length direction of the corner. After the locking protrusion 201 of the upper protection panel is inserted into the locking recess 202 of the lower protection panel, a mechanical locking structure similar to a mortise and tenon joint is formed.

[0024] The hexagonal column 1031 is equipped with a scale. The extrusion positioning component includes a first elastic telescopic rod 1034. The fixed part of the first elastic telescopic rod 1034 is fixed to the hexagonal column 1031. A curved top plate 1035 is fixed to the telescopic end of the first elastic telescopic rod 1034. Wing plates 1036 are hinged to both sides of the curved top plate 1035. A first push rod 1038 is fixed to both sides of the first elastic telescopic rod 1034. A connecting ear 1037 is provided on the side of the wing plate 1036 near the first elastic telescopic rod 1034. An oval hole is opened on the connecting ear 1037. A hanging post 1039 is fixed to the end of the first push rod 1038 near the wing plate 1036. The hanging post 1039 passes through the connecting ear 1037 through the oval hole. The curved top plate 1035 is fixed to the telescopic end of the first elastic telescopic rod 1034, and its shape matches the corner profile of the corner protection plate 2, used to directly press the central corner area of ​​the protection plate. The two side wing plates 1036 are hinged to the two side edges of the curved top plate 1035 and can rotate around the hinge axis.

[0025] In its natural state (without compression): The first elastic telescopic rod 1034 is in a freely extended state, and the curved top plate 1035 is located at the foremost position. Under the action of spring force, the two side wing plates 1036 naturally rotate and tilt towards the side of the first elastic telescopic rod 1034 (i.e., backward).

[0026] During the compression process: After the curved top plate 1035 first contacts the corner surface of the external corner protection plate 2, the adjusting bolt 1033 continues to rotate, and the hexagonal column 1031 continues to move towards the external corner. Since the curved top plate 1035 is blocked by the external corner protection plate and cannot continue to move forward, the fixed part of the first elastic telescopic rod 1034 continues to move forward with the hexagonal column, while the telescopic end stops on the surface of the protection plate, and the first elastic telescopic rod 1034 is compressed. The first push rod 1038 moves forward with the fixed part, and the hanging column 1039 at the end of the first push rod 1038 slides forward in the oval hole of the wing plate connecting ear 1037. The hanging column 1039 pushes the connecting ear 1037 forward through the oval hole, pushing the wing plate 1036 to unfold and rotate outward around the hinge axis. The maximum rotation angle of the wing plate 1036 is such that it is flush with the two right-angled sides of the curved top plate 1035, meaning that the corresponding right-angled sides of the wing plate 1036 and the curved top plate 1035 are on the same plane. At this point, the wing plate 1036 is completely in contact with the surfaces of the two wing pieces of the corner protection plate 2, applying a uniform clamping force to the two wing pieces of the protection plate. This achieves precise clamping in stages, first positioning and then clamping the wing pieces. This staged clamping ensures that the corner parts and the two wing pieces of the protection plate are subjected to uniform clamping force, preventing the protection plate from twisting or shifting during the clamping process, and significantly improving the installation positioning accuracy and fit of the corner protection plate.

[0027] During the retraction process (after the mortar has hardened): the adjusting bolt 1033 is rotated in the opposite direction, driving the hexagonal column 1031 to move away from the corner. The first elastic telescopic rod 1034 first begins to extend and reset, the curved top plate 1035 remains in contact with the corner protection plate 2, but the fixed part of the first elastic telescopic rod 1034 moves away from the wall, and the first push rod 1038 moves accordingly. During this process, the two side wing plates 1036 begin to rotate and separate before the curved top plate 1035—that is, the wing plates 1036 first rotate backward around the hinge axis, changing from an extended state flush with the curved top plate 1035 to a retracted state tilted towards the first elastic telescopic rod 1034, and first disengaging from the surface of the corner protection plate 2. After the wing plates 1036 are fully retracted, the curved top plate 1035 disengages from the corner surface of the corner protection plate 2 as the telescopic end of the first elastic telescopic rod 1034 resets. This design achieves a step-by-step separation process, first rotating and then translating. This step-by-step design has significant advantages: the rotational retraction direction of the wing plate 1036 forms an angle with the direction of the adhesive force, enabling the removal of the adhesive layer formed by the drying mortar with less force. This avoids disturbing the anchored protective plate due to direct translational pulling. When the curved top plate 1035 detaches last, because the wing plate has already separated, its contact area with the corner of the protective plate is small, and the adhesive force is limited. Even with translational detachment, excessive pulling force will not be generated. This allows for displacement or deformation of the protective plate. After the curved top plate 1035 retracts, the gap between the curved top plate 1035 and the external corner protective plate 2 ensures that the plastering trowel assembly of the automatic plastering mechanism 3 can pass through.

[0028] Example 2 Reference Figure 1-13 The difference between this embodiment and embodiment 1 is that the automatic plastering mechanism 3 includes a lifting bracket 301, which is slidably mounted on the lifting guide support column 102. A mud storage tank 303 is fixed on the lifting bracket 301 by a second bracket. A plastering knife assembly is installed on the lifting bracket 301 by a third bracket 302. The main body of the plastering knife assembly is a right-angled folded plate 5. The lower edge of the right-angled folded plate 5 extends downward and is equipped with a trowel 501. A mortar receiving cavity is formed inside the right-angled folded plate 5. A mortar supply pipe 504 is connected to the mud storage tank 303. One end of the mortar supply pipe 504 extends into the mortar receiving cavity and is connected to a mortar distributor 503. The lifting bracket 301 is slidably mounted on two lifting guide support columns 102. The guide support columns restrict all degrees of freedom of the lifting bracket in the horizontal direction, retaining only the vertical lifting motion. The winch 4 pulls the lifting bracket 301 through a rope to achieve uniform lifting drive. The slurry storage tank 303 is fixed on the lifting bracket 301 and rises and falls synchronously with the lifting bracket 301 to continuously supply mortar to the plastering trowel assembly. The right-angled folding plate 5 has a right-angled shape that matches the 90° angle of the wall's external corner. Its hollow interior forms a mortar receiving cavity. The mortar enters the mortar receiving cavity through the mortar supply pipe 504, and is then evenly distributed throughout the mortar receiving cavity by the mortar distributor 503, and finally applied to the wall surface by the trowel 501.

[0029] The spatula 501 is mounted on the bottom of the right-angle folding plate 5, and the inside of the right-angle folding plate 5 is provided with a mudguard 502. The outside of the right-angle folding plate 5 and the spatula 501 is covered with a corrugated protective sleeve 505.

[0030] Among them, multiple second elastic telescopic rods 507 are fixed on the back of the right-angle folding plate 5. The fixed part of the second elastic telescopic rod 507 is fixedly connected to the right-angle folding plate 5, and the telescopic part of the second elastic telescopic rod 507 is fixedly connected to the spatula 501. The elastic force of the second elastic telescopic rod 507 is used to pull the spatula 501 upward and ensure that the oil control clutch 6 is disengaged, and the power transmission is cut off. Only when the spatula 501 is subjected to greater force during scraping, and the second elastic telescopic rod 507 is stretched, will the clutch be triggered to engage and power transmission begin; when scraping stops, the second elastic telescopic rod 507 will return to its original position and pull the spatula 501 back to its original position.

[0031] Under normal conditions (when the trowel is not in contact with the wall or under no pressure): The second elastic telescopic rod 507 is in a naturally contracted state or a slightly pre-stretched state, and its elastic tension pulls the trowel 501 to its highest initial position. At this time, the piston rod of the hydraulic cylinder 506, which is fixedly connected to the trowel 501, is in the extended state. The volume of oil in the hydraulic cylinder 506 is small, the hydraulic chamber of the oil control clutch 6 is kept at constant pressure, the oil control clutch 6 is in the disengaged state, the screw 7 does not rotate, and no material is fed.

[0032] In the plastering process (when the trowel contacts the wall and moves to scrape): After the trowel 501 contacts the wall, it experiences a reaction force from the wall. When this reaction force exceeds the elastic tension of the second elastic telescopic rod 507, the trowel 501 is pulled downwards from its initial position, and the second elastic telescopic rod 507 is extended. The displacement of the trowel 501 is transmitted to the piston rod of the hydraulic cylinder 506 through the connector, causing the piston rod to extend outwards. The internal volume of the hydraulic cylinder 506 increases, creating a negative pressure. Hydraulic oil from the hydraulic chamber of the hydraulic clutch 6 is drawn into the hydraulic cylinder 506 through the first oil guide port 5061. The pressure inside the hydraulic chamber of the hydraulic clutch 6 decreases, thereby triggering the engagement of the hydraulic clutch 6. The power of the mixing spindle 3033 is transmitted to the screw 7, which rotates and extrudes mortar, thus achieving material feeding. That is, only when the trowel 501 is subjected to a greater force during scraping, and the second elastic telescopic rod 507 is extended, will the clutch be triggered, and power transmission begin.

[0033] In the stopped working state (when the trowel is removed from the wall or pressure is stopped): When the trowel 501 is removed from the wall or pressure is stopped, the wall reaction force disappears. The elastic tension of the second elastic telescopic rod 507 causes the trowel 501 to return to its initial position, pushing the piston rod of the hydraulic cylinder 506 back into the cylinder. The volume of the cylinder decreases, and the oil is forced from the hydraulic cylinder 506 back into the hydraulic chamber of the hydraulic clutch 6. The pressure in the hydraulic chamber of the hydraulic clutch 6 is restored, the hydraulic clutch 6 disengages, the screw 7 stops rotating, and the material supply automatically stops. When scraping stops, the second elastic telescopic rod 507 will return to its original position and pull the trowel 501 back to its original position.

[0034] A mudguard 502 is positioned below the mortar receiving cavity inside the right-angle folded plate 5, guiding the mortar within the cavity to the working surface of the trowel 501 while preventing mortar from entering the floating gap between the trowel 501 and the right-angle folded plate 5. A corrugated protective sleeve 505 is fitted over the outside of the movable connection between the right-angle folded plate 5 and the trowel 501, extending and retracting with the movement of the trowel to isolate the gap at the movable connection from the external environment.

[0035] Among them, a hydraulic cylinder 506 is fixed on the back of the right-angle folding plate 5. The piston rod of the hydraulic cylinder 506 is fixed to the trowel 501. The hydraulic cylinder 506 is provided with a first oil guide port 5061. The bottom end of the mud storage tank 303 is provided with a slurry discharge port 3032. The end of the mortar supply pipe 504 away from the mortar distributor 503 is connected to the slurry discharge port 3032. A screw 7 is rotatably installed inside the slurry discharge port 3032. The mud storage tank 303 is provided with a stirring main shaft 3033. An oil control clutch 6 is provided between the bottom end of the stirring main shaft 3033 and the top end of the screw 7. The oil control clutch is connected to the first oil guide port 5061 through an oil guide pipe. The cylinder body of hydraulic cylinder 506 is fixed to the back of right-angled folding plate 5, and the piston rod is fixedly connected to trowel 501. Hydraulic cylinder 506 is a single-acting spring-return type hydraulic cylinder, which is filled with hydraulic oil and connected to the hydraulic chamber of oil control clutch 6 through the first oil guide port 5061 and the oil guide pipeline to form a closed hydraulic circuit.

[0036] Under normal conditions (when the trowel is not in contact with the wall or under no pressure): The elastic force of the second elastic telescopic rod 507 pulls the trowel 501 upward to its highest initial position. At this time, the piston rod of the hydraulic cylinder 506 is in the extended state, the volume of oil in the cylinder is small, there is no pressure in the hydraulic chamber of the hydraulic clutch 6, and the hydraulic clutch 6 is in the disengaged state.

[0037] In the plastering process (when the trowel contacts the wall and moves to scrape): The trowel 501 experiences a reaction force from the wall. When this reaction force exceeds the elastic tension of the second elastic telescopic rod 507, the trowel 501 is pulled downwards, and the second elastic telescopic rod 507 is extended. Since the trowel 501 is fixedly connected to the piston rod of the hydraulic cylinder 506, when the trowel moves downwards, it causes the piston rod to extend outwards, increasing the internal volume of the hydraulic cylinder 506 and creating a negative pressure. This negative pressure draws hydraulic oil from the hydraulic chamber of the hydraulic clutch 6 into the hydraulic cylinder 506 through the first oil guide port 5061. This action reduces the oil pressure in the hydraulic chamber of the hydraulic clutch 6, thereby triggering the engagement of the hydraulic clutch 6.

[0038] The screw 7 is hollow inside, and its bottom end extends to the outside of the discharge port 3032 and is connected to a rotary joint 703. A second oil guide port 704 is connected to the rotary joint 703, and the second oil guide port 704 is connected to the first oil guide port 5061 via an oil guide pipe. A hydraulic piston 701 is installed inside the screw 7, and the top end of the screw 7 extends rotatably into the interior of the hydraulic clutch 6. The hydraulic clutch 6 is a claw clutch, and its outer shell is connected to the bottom of the stirring shaft 3033. The hydraulic piston 701 is fixed at one end, and a second push rod 702 is fixed at the top end. The second push rod 702 is in a moving and lifting cooperation with the inner wall of the screw 7. An annular driven clutch disc 601 is fixed on the inner wall of the oil control clutch 6. The top end of the second push rod 702 passes through the annular driven clutch disc 601 and is fixed with an active clutch disc 705. The active clutch disc 705 is provided with a meshing claw on the end face facing the annular driven clutch disc 601. The annular driven clutch disc 601 is provided with a corresponding meshing groove. The hydraulic chamber of the hydraulic clutch 6 is connected to the first oil guide port 5061 of the hydraulic cylinder 506 through the second oil guide port 704 and the oil guide pipe, forming a closed hydraulic circuit. The lower end face of the hydraulic piston 701 bears the oil pressure, and the upper end face bears the return spring force (and / or atmospheric pressure). When the oil pressure in the hydraulic chamber changes, the hydraulic piston 701 moves axially along the screw 7 under the combined action of the pressure difference and the spring force. Under normal conditions (when the trowel is not in contact with the wall or under no pressure): The second elastic telescopic rod 507 pulls the trowel 501 to its initial position, the piston rod of the hydraulic cylinder 506 is extended, and the hydraulic chamber of the hydraulic clutch 6 is filled with hydraulic oil and maintained at constant pressure. The constant pressure oil acts on the lower end face of the hydraulic piston 701 through the internal channel of the screw 7, pushing the hydraulic piston 701 upward, so that it is in a high position, i.e., away from the direction of the annular driven clutch disc 601. At this time, the active clutch disc 705 and the annular driven clutch disc 601 remain disengaged, and the hydraulic clutch 6 is in a disengaged state.

[0039] During plastering (the trowel floats downwards due to wall resistance): The trowel 501 floats downwards due to wall resistance, causing the piston rod of the hydraulic cylinder 506 to extend outwards. The increased volume of the cylinder creates negative pressure, drawing oil from the hydraulic chamber of the hydraulic clutch 6 into the hydraulic cylinder 506 through the first oil guide port 5061, thus reducing the oil pressure in the hydraulic chamber of the hydraulic clutch 6. The reduced oil pressure at the lower end of the hydraulic piston 701 causes it to lose oil pressure support and move downwards under the action of the return spring. The hydraulic piston 701, through the second push rod 702, drives the active clutch disc 705 downwards, approaching the annular driven clutch disc 601. The engaging claws of the active clutch disc 705 mesh with the engaging grooves of the annular driven clutch disc 601, engaging the hydraulic clutch 6. The power of the mixing spindle 3033 is transmitted to the screw 7, driving the screw to rotate and extrude mortar.

[0040] When work stops (the trowel leaves the wall or pressure ceases): The trowel 501 leaves the wall, and the elastic tension of the second elastic telescopic rod 507 returns the trowel 501 to its initial position. The piston rod of the hydraulic cylinder 506 is pushed back into the cylinder, reducing its volume. Oil is then forced back into the hydraulic chamber of the hydraulic clutch 6 via the oil guide pipe. The pressure in the hydraulic chamber of the hydraulic clutch 6 returns to normal pressure, and the normal pressure oil pushes the hydraulic piston 701 back to its high position. The second push rod 702 drives the active clutch disc 705 to move upward, disengaging the engagement claw from the engagement groove. The hydraulic clutch 6 disengages, and the feeding automatically stops.

[0041] The top of the mud storage tank 303 is fixed with a rotary motor 3035. The output shaft of the rotary motor 3035 is fixed with the top of the stirring main shaft 3033. The top of the mud storage tank 303 is provided with a cleaning port 3031 on one side of the rotary motor 3035. The stirring blades 3034 are installed on the outside of the stirring main shaft 3033. After use, the slurry needs to be drained and the residual slurry inside the mud storage tank 303 and the pipes needs to be washed away with a flushing liquid.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An integrated device for simultaneous construction of external corner protection and plastering, comprising a lower support plate (1), an upper support plate (101), and multiple external corner protection plates (2), wherein limit baffles (104) are fixed on the lower support plate (1) and the upper support plate (101) near the wall surface, characterized in that: A limiting support column (103) and two lifting guide support columns (102) are provided between the lower support plate (1) and the upper support plate (101). An automatic plastering mechanism (3) is installed between the outer sides of the two lifting guide support columns (102). The corner protection plate (2) is stuck on the corner of the wall and embedded in the cement slurry layer of the corner of the wall. Multiple protection plate squeezing and limiting mechanisms are installed at equal intervals on the limiting support column (103), and the multiple protection plate squeezing and limiting mechanisms correspond one-to-one with the multiple corner protection plates (2). The protective plate compression limiting mechanism includes a hexagonal column (1031), which horizontally moves through the hexagonal guide sleeve on the limiting support column (103). An adjusting bolt (1033) is rotatably installed on one side of the limiting support column (103) via a first bracket (1032). A threaded hole is opened at one end of the hexagonal column (1031), and the adjusting bolt (1033) extends into the threaded hole. A compression positioning component is installed at the end of the hexagonal column (1031) away from the adjusting bolt (1033), and the compression positioning component matches the shape of the external corner protective plate (2). A winch (4) is installed at the top of the upper support plate (101), and the rope of the winch (4) is connected to the automatic plastering mechanism (3).

2. The integrated device for simultaneous construction of external corner protection and plastering according to claim 1, characterized in that: The corner protection plates (2) are connected to each other in sequence. One end of the corner protection plate (2) is provided with a snap-fit ​​protrusion (201) and the other end is provided with a snap-fit ​​recess (202). The outlines of the snap-fit ​​protrusion (201) and the snap-fit ​​recess (202) match each other. The snap-fit ​​protrusion (201) of the upper corner protection plate (2) can be embedded in the snap-fit ​​recess (202) of the lower corner protection plate (2) to form a limiting fastening.

3. The integrated device for simultaneous construction of external corner protection and plastering according to claim 1, characterized in that: The hexagonal column (1031) is provided with a scale. The extrusion positioning component includes a first elastic telescopic rod (1034). The fixed part of the first elastic telescopic rod (1034) is fixed to the hexagonal column (1031). A curved top plate (1035) is fixed to the telescopic end of the first elastic telescopic rod (1034). Wing plates (1036) are hinged to both sides of the curved top plate (1035). A first push rod (1038) is fixed to both sides of the first elastic telescopic rod (1034). A connecting ear (1037) is provided on the side of the wing plate (1036) near the first elastic telescopic rod (1034). An oval hole is opened on the connecting ear (1037). A hanging column (1039) is fixed to the end of the first push rod (1038) near the wing plate (1036). The hanging column (1039) passes through the connecting ear (1037) through the oval hole.

4. The integrated device for simultaneous construction of external corner protection and plastering according to claim 1, characterized in that: The automatic plastering mechanism (3) includes a lifting bracket (301), which is slidably mounted on the lifting guide support column (102). A mud storage tank (303) is fixed on the lifting bracket (301) by a second bracket. A plastering knife assembly is installed on the lifting bracket (301) by a third bracket (302). The main body of the plastering knife assembly is a right-angled folded plate (5). The lower edge of the right-angled folded plate (5) extends downward and is equipped with a trowel (501). A mortar receiving cavity is formed inside the right-angled folded plate (5). A mortar supply pipe (504) is connected to the mud storage tank (303). One end of the mortar supply pipe (504) extends into the mortar receiving cavity and is connected to a mortar distributor (503).

5. The integrated device for simultaneous construction of external corner protection and plastering according to claim 4, characterized in that: The spatula (501) is lifted and floated at the bottom of the right-angle folding plate (5), and the inside of the right-angle folding plate (5) is provided with a mudguard (502), and the outside of the right-angle folding plate (5) and the spatula (501) is covered with a corrugated protective sleeve (505).

6. The integrated device for simultaneous construction of external corner protection and plastering according to claim 4, characterized in that: Multiple second elastic telescopic rods (507) are fixed to the back of the right-angle folding plate (5). The fixed part of the second elastic telescopic rod (507) is fixedly connected to the right-angle folding plate (5), and the telescopic part of the second elastic telescopic rod (507) is fixedly connected to the spatula (501).

7. The integrated device for simultaneous construction of external corner protection and plastering according to claim 6, characterized in that: A hydraulic cylinder (506) is fixed on the back of the right-angle folding plate (5). The piston rod of the hydraulic cylinder (506) is fixed to the trowel (501). The hydraulic cylinder (506) is provided with a first oil guide port (5061). The bottom end of the mud storage tank (303) is provided with a slurry discharge port (3032). The end of the mortar supply pipe (504) away from the mortar distributor (503) is connected to the slurry discharge port (3032). A screw (7) is rotatably installed inside the slurry discharge port (3032). The mud storage tank (303) is provided with a stirring spindle (3033). An oil control clutch (6) is provided between the bottom end of the stirring spindle (3033) and the top end of the screw (7). The oil control clutch is connected to the first oil guide port (5061) through an oil guide pipe.

8. The integrated device for simultaneous construction of external corner protection and plastering according to claim 7, characterized in that: The screw (7) is hollow inside. The bottom end of the screw (7) extends to the outside of the discharge port (3032) and is connected to a rotary joint (703). A second oil guide port (704) is connected to the rotary joint (703). The second oil guide port (704) and the first oil guide port (5061) are connected through an oil guide pipe. A hydraulic piston (701) is installed inside the screw (7). The top end of the screw (7) extends rotatably into the interior of the oil control clutch (6). The oil control clutch (6) is a claw clutch. The outer shell of the oil control clutch (6) is connected to the bottom of the stirring main shaft (3033). The hydraulic piston (701) is fixed at one end, and a second push rod (702) is fixed at the top end of the hydraulic piston (701). The second push rod (702) is in a moving and lifting cooperation with the inner wall of the screw (7). An annular driven clutch disc (601) is fixed on the inner wall of the oil control clutch (6). The top end of the second push rod (702) passes through the annular driven clutch disc (601) and is fixed with an active clutch disc (705). The active clutch disc (705) is provided with a meshing claw on the end face facing the annular driven clutch disc (601). The annular driven clutch disc (601) is provided with a corresponding meshing groove.

9. The integrated device for simultaneous construction of external corner protection and plastering according to claim 7, characterized in that: A rotary motor (3035) is fixed to the top of the mud storage tank (303), and the output shaft of the rotary motor (3035) is fixed to the top of the stirring main shaft (3033).

10. The integrated device for simultaneous construction of external corner protection and plastering according to claim 7, characterized in that: The top of the mud storage tank (303) is provided with a cleaning port (3031) on one side of the rotary motor (3035), and stirring blades (3034) are installed on the outside of the stirring main shaft (3033).

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