A wall plastering machine

Abstract

The utility model discloses a wall plastering machine, including sand mortar bin and extrusion mechanism, sand mortar bin is used to accommodate mortar ash, and this sand mortar bin front end surface is equipped with the mortar joint and scraper subassembly, the mortar joint extends along the length direction of sand mortar bin, the scraper subassembly is located below the mortar joint and extends along the length direction of mortar joint, the extrusion mechanism includes power component and swingable pressing plate, and the pressing plate is movably arranged in the internal cavity of sand mortar bin, and the power output of power component is connected with the driving of pressing plate, and the power component drives the pressing plate to exert extrusion pressure to the mortar ash in sand mortar bin, and makes the mortar ash extrude to the wall surface of waiting operation through the mortar joint, the wall plastering machine of the utility model replaces the traditional pumping system through the mechanical type pressure grouting structure of extrusion mechanism, can solve the problem of pipe blockage, mortar output fluctuation and high equipment complexity in prior art due to the slag pump delivery.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a wall plastering machine. Background Technology

[0002] Wall plastering is a crucial step in building construction, especially in the treatment of interior and exterior walls. A well-designed plaster layer can effectively improve the wall's moisture resistance, weathering resistance, and thermal insulation performance. Although the large-formwork concrete walls commonly used in current buildings have the advantage of a smooth and flat surface, localized plastering is still necessary at the intersections of longitudinal and transverse walls, stairwell transition areas, door and window openings, and interior spaces to achieve leveling and precision correction.

[0003] Most existing plastering equipment uses a slurry pump-driven mortar conveying operation mode. The slurry pump delivers the mortar from the mortar bin to the plastering frame cavity, and then the motor drives the plastering frame to move back and forth along the wall to complete the plastering. As shown in the patent announcement number CN220504430U, entitled "A Plastering Machine for Construction Engineering", its plastering frame has a slurry outlet on the side wall. The mortar is passively squeezed out by pump pressure and spread by the movement of the frame.

[0004] However, this technical approach has the following core defects: 1. The pipeline is frequently blocked when pumping mortar containing aggregate; fluctuations in pumping pressure lead to unstable slurry output; the open design of the plastering frame makes it difficult to accurately control the thickness, which easily results in uneven thickness; the pump body and pipeline system increase the complexity of the equipment. Utility Model Content

[0005] In view of this, the present invention provides a wall plastering machine that replaces the traditional pumping system with a mechanical grouting structure of an extrusion mechanism, thereby avoiding the problems of pipeline blockage, grout volume fluctuation and high equipment complexity caused by slurry pump transportation in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wall plastering machine includes: a mortar bin and an extrusion mechanism; the mortar bin is used to hold mortar, and the front end of the mortar bin is provided with a mortar outlet and a scraper assembly, the mortar outlet extending along the length of the mortar bin, and the scraper assembly located below the mortar outlet and extending along the length of the mortar outlet; the extrusion mechanism includes a power component and a swingable pressure plate, the pressure plate being movably disposed in the internal cavity of the mortar bin, the power output end of the power component being driven and connected to the pressure plate, the power component driving the pressure plate to apply extrusion pressure to the mortar in the mortar bin, so that the mortar is extruded through the mortar outlet to the wall surface to be plastered.

[0008] To better achieve the above technical solution, optionally, the scraper assembly includes an upper thickness scraper and a lower leveling scraper. The upper thickness scraper and the lower leveling scraper are installed vertically at intervals on the front face of the sand and ash hopper. The vertical distance from the front face of the upper thickness scraper to the front face of the sand and ash hopper is less than the vertical distance from the front face of the lower leveling scraper to the front face of the sand and ash hopper, so that the thickness of the mortar layer to be applied between the upper thickness scraper and the wall surface to be worked is greater than the thickness of the mortar layer to be applied between the lower leveling scraper and the wall surface to be worked.

[0009] Optionally, the upper limit thickness scraper is connected to the front end face of the sand and ash hopper via an adjustable pitch screw.

[0010] Optionally, the front end face of the sand and lime hopper is provided with at least two sets of supporting pulleys at intervals, and the rotation axis of each supporting pulley is parallel to the length direction of the sand and lime hopper; the supporting pulley is located above the grout outlet joint, and its outer circumferential surface protrudes from the front end face of the sand and lime hopper, so as to roll in contact with the wall surface to be worked during operation and maintain the predetermined gap between the grout outlet joint and the wall surface.

[0011] Optionally, the pressure plate includes a spun plate body and a rotating shaft. The rotating shaft is rotatably disposed on the upper front side of the sand and ash bin. The front end of the spun plate body is fixedly connected to the rotating shaft. The spun plate body rotates around the rotating shaft and swings relative to the sand and ash bin, thereby squeezing the mortar ash out from the mortar outlet joint.

[0012] Optionally, the shape of the internal cavity of the sand and ash bin is configured to match the trajectory of the spinning plate body rotating around the rotation axis.

[0013] Optionally, the power assembly includes a stepper motor, a driving pulley, a driven pulley, and a transmission belt; the driving pulley is connected and fixed to the output shaft of the stepper motor, the driven pulley is coaxially fixed to the end of the rotating shaft, and the transmission belt is tensioned and sleeved between the driving pulley and the driven pulley, forming a closed-loop transmission system.

[0014] Optionally, it also includes a gate, which is embedded in the front end face of the sand and lime silo in a vertically sliding manner. The lower edge of the gate forms an adjustable sealing structure for the slurry outlet joint, and the opening and closing state and opening size of the slurry outlet joint are controlled by the lifting and lowering movement.

[0015] Optionally, the gate is provided with a guide hole that slides up and down with the mounting seat of the supporting pulley.

[0016] Optionally, the upper part of the sand and ash silo is provided with at least one feeding port, which is used to replenish mortar ash into the sand and ash silo.

[0017] The beneficial effects of this utility model are:

[0018] The wall plastering machine of this utility model replaces the traditional pumping system with a mechanical grouting structure of the extrusion mechanism, which can avoid the risk of pump blockage and reduce the complexity of the equipment. The extrusion mechanism generates a laminar flow slurry curtain through the oscillation of the pressure plate, which can realize the continuous and uniform delivery of mortar.

[0019] This utility model of a wall plastering machine features a stepped structure for the upper thickness scraper and the lower leveling scraper. During the mortar plastering process, the upper thickness scraper first limits the initial thickness of the mortar output from the mortar bin, while the lower leveling scraper levels and compacts the initially applied mortar layer, controlling the final thickness and flatness of the mortar layer. The combined use of the upper thickness scraper and the lower leveling scraper can reduce the problem of mortar accumulation or uneven thickness, thus improving the quality and efficiency of wall plastering. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a wall plastering machine from one angle according to an embodiment of this utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of a wall plastering machine from another angle according to an embodiment of this utility model;

[0022] Figure 3 yes Figure 2 Side view

[0023] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 yes Figure 2 Exploded view;

[0025] Figure label:

[0026] Sand and lime bin 10, grout outlet 101, support pulley 102, material filling port 103, slot 104, upper limit thickness scraper 21, lower leveling scraper 22, adjusting screw 23, mounting strip 24, stepper motor 31, driving pulley 32, driven pulley 33, transmission belt 34, spinning plate 35, rotating shaft 36, gate 40, guide hole 401. Detailed Implementation

[0027] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. Identical components are indicated by the same reference numerals.

[0028] Please see Figures 1 to 5 The present invention discloses a wall plastering machine, including a sand and ash bin 10 and an extrusion mechanism.

[0029] The mortar bin 10 is used to hold mortar ash. The front end of the mortar bin 10 is provided with a mortar outlet 101 and a scraper assembly. The mortar outlet 101 extends along the length of the mortar bin 10, and the scraper assembly is located below the mortar outlet 101 and extends along the length of the mortar outlet 101. The extrusion mechanism includes a power component and a swingable pressure plate. The pressure plate is movably disposed in the internal cavity of the mortar bin 10. The power output end of the power component is connected to the pressure plate drive. The power component drives the pressure plate to apply extrusion pressure to the mortar ash, so that the mortar ash is extruded through the mortar outlet 101 to the wall surface to be worked on.

[0030] The wall plastering machine of this utility model embodiment needs to be installed on a three-axis mover. During operation: adjust the three-axis mover to lower the plastering machine to the bottom of the wall to be worked on. At this time, a working gap of 0.5-2mm is formed between the front end of the scraper assembly and the wall. The three-axis mover drives the plastering machine to move vertically upward at a uniform speed. The power component drives the pressure plate to apply the extrusion torque, which extrudes the mortar in the mortar bin 10 and squeezes it out through the mortar outlet 101 to form an initial mortar layer in the working gap. The scraper assembly scrapes the initial mortar layer to form a preset thickness layer.

[0031] The wall plastering machine of this utility model replaces the traditional pumping system with a mechanical grouting structure of the extrusion mechanism, which can avoid the risk of pumping blockage and reduce the complexity of the equipment. The extrusion mechanism generates a laminar flow slurry curtain through the oscillation of the pressure plate, which can realize the continuous and uniform delivery of mortar.

[0032] In the embodiments of this utility model, it should be noted that the finished mortar or putty is placed in a flexible package, for example, filled into a plastic bag and placed in the mortar hopper 10 in a cylindrical shape, and then cut open with a knife at the mortar outlet 101 so that the mortar or putty in the flexible package can be output through the mortar outlet 101.

[0033] like Figure 4 As shown, the scraper assembly includes an upper thickness scraper 21 and a lower leveling scraper 22, which are arranged vertically at intervals on the front face of the mortar bin 10. The vertical distance between the front face of the upper thickness scraper 21 and the front face of the mortar bin 10 is less than the corresponding distance of the lower leveling scraper 22, thus forming a stepped structural layout. This allows an initial mortar layer to be applied between the upper thickness scraper 21 and the wall surface, with a thickness greater than the final mortar layer formed between the lower leveling scraper 22 and the wall surface. Through this stepped scraper structure, during the mortar plastering process, the upper thickness scraper 21 initially limits the thickness of the mortar output from the mortar bin 10, while the lower leveling scraper 22 levels and compacts the initially applied mortar layer, controlling the final thickness and smoothness of the mortar layer. The use of the upper thickness scraper 21 and the lower leveling scraper 22 together can effectively reduce the problem of mortar accumulation or uneven thickness, and improve the quality and efficiency of wall plastering construction.

[0034] In this embodiment of the invention, the upper thickness scraper 21 and the lower flat scraper 22 are arranged in parallel, and the upper thickness scraper 21 and the lower flat scraper 22 form obtuse angles with the front end face of the mortar hopper 10. The obtuse angle is preferably between 135° and 160°. When the mortar hopper 10 delivers mortar to the wall surface, the mortar's own weight and the component force generated by the inclined surface of the scraper can be used to apply a continuous and stable squeezing action, thereby effectively eliminating air bubbles in the mortar and improving the bonding strength between the mortar layer and the wall surface. Simultaneously, compared to vertical or acute angle arrangements, the obtuse angle of 135° to 160° can reduce the frictional resistance between the upper thickness scraper 21 and the lower flat scraper 22 and the wall surface while ensuring mortar application efficiency, reducing scraper wear, and contributing to a more uniform and smooth mortar application effect.

[0035] In an embodiment of this utility model, the upper limit thickness scraper 21 is connected to the front end face of the mortar bin 10 via an adjusting screw 23. Specifically, an installation strip 24 is fixedly provided on the front end face of the mortar bin 10. The inclination angle of the installation strip 24 is consistent with the inclination angle of the upper limit thickness scraper 21 and the lower flat scraper 22. A connecting plate 211 is extended from the lower end face of the upper limit thickness scraper 21. The connecting plate 211 is installed on the front end face of the installation strip 24 via multiple spaced adjusting screws 23. By turning the adjusting screws 23, the distance between the connecting plate 211 and the front end face of the installation strip 24 can be adjusted, thereby realizing the adjustable distance between the upper limit thickness scraper 21 and the wall surface to be worked on, thereby controlling the initial thickness of the mortar layer to be applied.

[0036] During construction, the upper thickness scraper 21 can flexibly set the plaster thickness according to different construction needs, while the lower leveling scraper 22 smooths the surface of the mortar layer initially formed by the upper thickness scraper 21, eliminating surface unevenness and improving flatness. The two work together to form a systematic plastering process of "first determining the thickness, then leveling," which not only effectively avoids quality problems such as hollowing and cracking caused by uneven mortar thickness, but also improves the automation and construction efficiency of plastering operations, while reducing the waste of mortar materials. It achieves a dual improvement in economic benefits and construction efficiency while ensuring construction quality.

[0037] In this embodiment, it should be noted that the adjusting screw 23 includes an adjusting screw and a locking nut. The end cap of the adjusting screw and the locking nut are respectively clamped on both sides of the connecting plate 211 to realize the position adjustment of the upper limit thickness scraper 21.

[0038] In this embodiment of the invention, at least two sets of supporting pulleys 102 are spaced apart on the front end face of the mortar bin 10. Each set of supporting pulleys 102 includes two supporting pulleys 102 spaced apart vertically, and the rotation axis of each supporting pulley 102 is parallel to the length direction of the mortar bin 10. The installation position of the supporting pulleys 102 is higher than the mortar outlet joint 101, and their outer circumferential surface protrudes from the front end face of the mortar bin 10. During the wall plastering operation, the supporting pulleys 102 form rolling contact with the wall surface to be plastered, which can maintain the predetermined gap between the mortar outlet joint 101 and the wall surface, thereby ensuring that the thickness of the mortar squeezed out from the mortar outlet joint 101 is uniform and consistent, avoiding local over-thickness or under-thickness.

[0039] Specifically, the support pulley blocks 102 are configured in four groups, arranged in a rectangular shape on the front end of the mortar bin 10. This symmetrical and uniform layout provides more stable support for the wall plastering machine, ensuring that the plastering machine remains balanced during movement and preventing problems such as inconsistent plaster thickness or equipment shaking caused by uneven force.

[0040] In this embodiment of the invention, the pressure plate includes a spun plate body 35 and a rotating shaft 36. The rotating shaft 36 is rotatably disposed on the upper front side of the mortar bin 10. The front end of the spun plate body 35 is fixedly connected to the rotating shaft 36. The spun plate body 35 rotates around the rotating shaft 36 and swings relative to the mortar bin 10, thereby pressing mortar onto the wall surface. The rotation trajectory of the spun plate body 35 is arc-shaped. To ensure that all the mortar in the cavity of the mortar bin 10 can be pressed out, the shape of the internal cavity of the mortar bin 10 is adapted to the rotation trajectory of the spun plate body 35 around the rotating shaft 36. This allows the spun plate body 35 to fit the inner wall of the mortar bin 10 to the maximum extent during the swinging process, reducing mortar residue and improving material utilization. Simultaneously, because the movement trajectory of the spun plate body 35 matches the shape of the internal cavity of the mortar bin 10, the mortar is subjected to uniform pressure during the extrusion process, thereby ensuring the flatness and density of the plaster layer and improving the plastering quality.

[0041] like Figure 1 and Figure 2 As shown, the power assembly includes a stepper motor 31, a driving pulley 32, a driven pulley 33, and a transmission belt 34; the driving pulley 32 is connected and fixed to the output shaft of the stepper motor 31; the driven pulley 33 is coaxially fixed to the end of the rotating shaft 36; the transmission belt 34 is tensioned and sleeved between the driving pulley 32 and the driven pulley 33, forming a closed-loop transmission system.

[0042] In an embodiment of this utility model, a gate plate 40 is also included. The gate plate 40 is embedded in the front end face of the sand and ash bin 10 in a vertically sliding manner. The lower edge of the gate plate 40 forms an adjustable sealing structure for the slurry outlet joint 101. The opening and closing state and opening size of the slurry outlet joint 101 are controlled by the lifting and lowering movement.

[0043] Specifically, slots 104 are provided on both sides of the front end face of the sand and ash silo 10. The gate plate 40 is inserted into the slots 104 on the opposite sides, so that the gate plate 40 can only move along the length of the slots 104. The gate plate 40 is provided with guide holes 401 for the seat of the support pulley 102 to slide up and down. There are two guide holes 401, which slide with the upper and lower sets of support pulleys 102 respectively. The guide holes 401 not only play a guiding role, but also avoid the support pulleys 102, so as to avoid interference between the gate plate 40 and the support pulleys 102 and ensure the normal operation of the entire device.

[0044] In an embodiment of this utility model, the upper part of the sand and ash silo 10 is provided with at least one feeding port 103 for replenishing mortar ash into the sand and ash silo 10. The feeding port 103 can be an opening at the upper end of the sand and ash silo 10 or it can be opened on the side wall of the sand and ash silo 10.

[0045] The technical solution of this utility model has been described in detail above with reference to specific embodiments. The specific embodiments described are used to help understand the concept of this utility model. Derivations and modifications made by those skilled in the art based on the specific embodiments of this utility model also fall within the protection scope of this utility model.

Claims

1. A wall plastering machine, characterized in that, Includes a sand and ash silo (10) and an extrusion mechanism; The sand and ash bin (10) is used to contain mortar ash. The front end face of the sand and ash bin (10) is provided with a mortar outlet (101) and a scraper assembly. The mortar outlet (101) extends along the length direction of the sand and ash bin (10), and the scraper assembly is located below the mortar outlet (101) and extends along the length direction of the mortar outlet (101). The extrusion mechanism includes a power component and a swingable pressure plate. The pressure plate is movably disposed in the internal cavity of the sand and mortar bin (10). The power output end of the power component is driven and connected to the pressure plate. The power component drives the pressure plate to apply extrusion pressure to the mortar in the sand and mortar bin (10), so that the mortar is extruded through the grout outlet (101) to the wall surface to be worked.

2. The wall plastering machine according to claim 1, characterized in that: The scraper assembly includes an upper thickness scraper (21) and a lower flat scraper (22). The upper thickness scraper (21) and the lower flat scraper (22) are installed vertically at intervals on the front end face of the sand and ash bin (10). The vertical distance from the front end face of the upper thickness scraper (21) to the front end face of the sand and ash bin (10) is less than the vertical distance from the front end face of the lower flat scraper (22) to the front end face of the sand and ash bin (10), so that the thickness of the mortar layer to be applied between the upper thickness scraper (21) and the wall surface to be worked is greater than the thickness of the mortar layer to be applied between the lower flat scraper (22) and the wall surface to be worked.

3. A wall plastering machine according to claim 2, characterized in that, The upper limit thickness scraper (21) is connected to the front end face of the sand and ash bin (10) via the pitch screw (23).

4. A wall plastering machine according to claim 3, characterized in that, At least two sets of support pulleys (102) are provided at intervals on the front end face of the sand and lime silo (10). The rotation axis of each support pulley (102) is parallel to the length direction of the sand and lime silo (10). The support pulley (102) is located above the grout outlet joint (101), and its outer circumferential surface protrudes from the front end face of the sand and lime silo (10). It is used to roll and contact the wall surface to be worked during operation to maintain the predetermined gap between the grout outlet joint (101) and the wall surface.

5. A wall plastering machine according to claim 4, characterized in that, The pressure plate includes a spun plate body (35) and a rotating shaft (36). The rotating shaft (36) is rotatably disposed on the upper front side of the sand and ash hopper (10). The front end of the spun plate body (35) is fixedly connected to the rotating shaft (36). The spun plate body (35) rotates around the rotating shaft (36) and swings relative to the sand and ash hopper (10), thereby squeezing the mortar ash out from the mortar outlet joint (101).

6. A wall plastering machine according to claim 5, characterized in that, The shape of the internal cavity of the sand and ash bin (10) is designed to match the trajectory of the spinning plate (35) rotating around the rotation axis (36).

7. A wall plastering machine according to claim 6, characterized in that, The power assembly includes a stepper motor (31), a driving pulley (32), a driven pulley (33), and a transmission belt (34). The driving pulley (32) is connected and fixed to the output shaft of the stepper motor (31), the driven pulley (33) is coaxially fixed to the end of the rotating shaft (36), and the transmission belt (34) is tensioned and sleeved between the driving pulley (32) and the driven pulley (33), forming a closed-loop transmission system.

8. A wall plastering machine according to claim 4, characterized in that, It also includes a gate (40), which is embedded in the front end face of the sand and ash bin (10) in a vertically sliding manner. The lower edge of the gate (40) forms an adjustable sealing structure for the slurry outlet joint (101), and the opening and closing state and opening size of the slurry outlet joint (101) are controlled by the lifting and lowering movement.

9. A wall plastering machine according to claim 8, characterized in that, The gate (40) has a guide hole (401) that slides up and down with the mounting base of the support pulley (102).

10. A wall plastering machine according to claim 1, characterized in that, The upper part of the sand and ash silo (10) is provided with at least one feeding port (103), which is used to replenish mortar ash into the sand and ash silo (10).

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