Plastering device for building wall surface construction

By combining an L-shaped folding frame with a cement pump, the problem of complex structure and increased weight of existing plastering equipment is solved, achieving a smooth plaster surface and convenient movement, thus improving construction efficiency.

CN224244369UActive Publication Date: 2026-05-15THE FIRST CONSTR ENG COMPANY LTD OF CHINA CONSTR SECOND ENG BUREAU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE FIRST CONSTR ENG COMPANY LTD OF CHINA CONSTR SECOND ENG BUREAU
Filing Date
2025-06-10
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The existing building wall plastering equipment has a complex structure, resulting in an uneven plaster surface, and the counterweight increases the weight of the equipment, affecting its mobility.

Method used

The device adopts an L-shaped folding frame structure, uses a cement pump as a counterweight, amplifies the torque through the cross frame to provide stable support, simplifies the structural design, and combines self-locking casters and a lifting platform to achieve stability and convenient movement of the device.

Benefits of technology

This improved the flatness of the ash surface and made the device easier to move, reducing the extra weight burden and increasing construction efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a building wall surface construction plastering device, and relates to the technical field of building construction equipment, the building wall surface construction plastering device comprises an L-shaped folding frame, the folding frame comprises a vertical frame and a transverse frame, the transverse frame is hinged to the vertical frame, a bracket is slidably connected to the transverse frame, a spring pin is arranged on the bracket and is in pin joint with the transverse frame, and the spring pin is in pin joint with the transverse frame. A cement pump is arranged on the bracket, a lifting table is arranged on the vertical frame, and a dust hopper is arranged on the lifting table. According to the folding frame, the transverse frame can be unfolded to form an L shape, the cement pump is moved backwards to serve as a counter weight, additional weight increase is avoided, torque is amplified through the transverse frame, and the folding frame can be stably supported in the working process; the cement pump is used for supplying materials into the ash hopper, so that the structure is simplified.
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Description

Technical Field

[0001] This application relates to the field of building construction equipment technology, and more specifically, to a plastering device for building walls. Background Technology

[0002] Wall plastering is a fundamental step in building decoration, referring to the even application of cement mortar to the wall surface to form a smooth and durable finishing layer. Traditional manual plastering requires repeated scraping with a trowel, which is both time-consuming and labor-intensive. In modern construction, plastering not only protects the wall structure but also provides an ideal base for subsequent paint, tiles, and other decorative finishes. Its thickness and smoothness directly affect the quality of the decoration and the durability of the building. A plastering machine is a mechanized construction device that uses a motor-driven pusher plate or roller to automatically deliver and evenly apply pre-mixed mortar to the wall surface. Compared to manual labor, it allows for continuous operation, significantly improving efficiency while ensuring a consistent plaster layer thickness.

[0003] In response, Chinese patent application number CN202322879958.X discloses a wall plastering device for building construction. This solution mainly uses a collection component to collect and store fallen concrete materials for easy collection and reuse. In addition, multiple counterweights are set to maintain the stability of the device.

[0004] However, in the process of implementing the technical solutions in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems:

[0005] 1. The storage box and guide block are divided into upper and lower parts, both of which come into contact with the gray surface, resulting in a complex structure and affecting the flatness of the gray surface;

[0006] 2. The counterweight increases the overall weight, affecting the movement of the device. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this application provides a building wall plastering device that can solve the problems mentioned in the background art.

[0008] The technical solution adopted by this application embodiment to solve its technical problem is: a building wall construction plastering device, including an L-shaped folding frame, the folding frame including an upright frame and a horizontal frame, the horizontal frame being hinged to the upright frame, a bracket being slidably connected to the horizontal frame, a spring pin being provided on the bracket and pinned to the horizontal frame, a cement pump being provided on the bracket, a lifting platform being provided on the upright frame, and a mortar hopper being provided on the lifting platform.

[0009] In one specific implementation, the uprights and the crossbeams are equipped with self-locking casters, and the lower end of the uprights is provided with a pull ring.

[0010] In one specific implementation, the folding frame further includes a support rod, the lower end of which is hinged to the crossbar, and a slide rod is fixedly connected to the upper end of the support rod. A sliding groove adapted to the slide rod is provided on the upright frame, and a screw is screwed onto the slide rod, the screw being screwed to the upright frame.

[0011] In one specific implementation, the lifting platform includes a frame, a gear, and a rack. The frame is slidably connected to the upright, the rack is fixedly connected to the upright, the gear is rotatably connected to the frame, and the gear meshes with the rack.

[0012] In one specific implementation, a worm gear is fixedly connected to the gear, a worm meshes with the worm gear, a motor is installed inside the frame, and the output end of the motor is connected to the worm shaft.

[0013] In one specific implementation, a bracket is fixedly connected to the platform, and the discharge pipe of the cement pump is inserted into the bracket.

[0014] In one specific implementation, the ash hopper includes a pusher plate and an electric cylinder, the front end of the pusher plate is hinged to the frame, and both ends of the electric cylinder are hinged to the pusher plate and the frame, respectively.

[0015] In one specific implementation, the ash hopper further includes a baffle, with a baffle provided at each end of the push plate, and the baffle is fixedly connected to the platform.

[0016] The advantages of the embodiments of this application are:

[0017] The crossbeam can be unfolded into an L-shape, and the cement pump can be moved backward to act as a counterweight to avoid adding extra weight. The crossbeam amplifies the torque, so that the folding frame can be stably supported during operation. The cement pump is used to feed material into the ash hopper, thereby simplifying the structure. Attached Figure Description

[0018] Figure 1 A first-view structural schematic diagram of the building wall plastering device in its unfolded state, provided for the embodiments of this application;

[0019] Figure 2 A second-view structural schematic diagram of the building wall plastering device in its unfolded state, provided for the embodiments of this application;

[0020] Figure 3 A schematic diagram of the folded structure of the building wall plastering device provided for the embodiments of this application;

[0021] Figure 4 This is a schematic diagram of the connection structure between the lifting platform and the upright frame provided in the embodiments of this application.

[0022] In the diagram: 10-Folding frame; 11-Upright frame; 12-Horizontal frame; 13-Bracket; 14-Wheel caster; 15-Pull ring; 16-Support rod; 17-Slide rod; 18-Screw; 19-Spring pin; 20-Cement pump; 30-Lifting platform; 31-Frame; 32-Gear; 33-Rack rack; 34-Worm gear; 35-Worm; 36-Motor; 37-Bracket; 40-Ash hopper; 41-Push plate; 42-Electric cylinder; 43-Baffle. Detailed Implementation

[0023] The technical solution in this application embodiment is to solve the problems mentioned in the background art above, and the overall idea is as follows:

[0024] Please see Figures 1-4 A plastering device for building walls includes an L-shaped folding frame 10. The folding frame 10 includes an upright frame 11 and a horizontal frame 12. The horizontal frame 12 is hinged to the upright frame 11. A bracket 13 is slidably connected to the horizontal frame 12. A spring pin 19 is provided on the bracket 13 and pinned to the horizontal frame 12. A cement pump 20 is provided on the bracket 13. A lifting platform 30 is provided on the upright frame 11, and a mortar hopper 40 is provided on the lifting platform 30. The horizontal frame 12 can be unfolded to form an L-shape, and the cement pump 20 can be moved backward to act as a counterweight to avoid adding extra weight. The horizontal frame 12 amplifies the torque, so that the folding frame 10 can obtain stable support during operation. The cement pump 20 supplies material into the mortar hopper 40, thereby simplifying the structure.

[0025] Please see Figures 1-4 The upright frame 11 and the horizontal frame 12 are equipped with self-locking casters 14, and the lower end of the upright frame 11 is equipped with a pull ring 15. Here, when the folding frame 10 is unfolded, the four casters 14 support the ground, making it easy to move and also locking in position. When the folding frame 10 is folded up, it can be stood upright for storage. At this time, the bracket 13 and the cement pump 20 can be moved downward to lower the center of gravity, or it can be laid down. In this way, the casters 14 on the horizontal frame 12 support the ground, and the pull ring 15 is used to drag the device to move it. The cement pump 20 and the lifting platform 30 both move backward, shifting the center of gravity backward, thereby reducing the force required to hold them.

[0026] Please see Figures 1-4 The folding frame 10 also includes a support rod 16, the lower end of which is hinged to the cross frame 12, and a slide rod 17 is fixedly connected to the upper end of the support rod 16. A groove adapted to the slide rod 17 is provided on the upright frame 11, and a screw 18 is screwed onto the slide rod 17, which is screwed to the upright frame 11. When unfolded, the support rod 16, the upright frame 11, and the cross frame 12 form a stable triangular structure, which is then locked in place by the screw 18. When folded, the slide rod 17 at the upper end of the support rod 16 slides upward within the groove until the cross frame 12 and the upright frame 11 are close together, at which point the support rod 16 is embedded into the cross frame 12. Then, the screw 18 is screwed onto the upper end of the upright frame 11 and into the top of the cross frame 12, thus locking the frame in place.

[0027] Please see Figures 1-4 The lifting platform 30 includes a frame 31, a gear 32, and a rack 33. The frame 31 is slidably connected to the upright 11, the rack 33 is fixedly connected to the upright 11, and the gear 32 is rotatably connected to the frame 31, meshing with the rack 33. Here, when the gear 32 rotates, it can roll along the rack 33, thereby driving the frame 31 to rise and fall along the upright 11.

[0028] Please see Figures 1-4 A worm gear 34 is fixedly connected to the gear 32, and a worm 35 meshes with the worm gear 34. A motor 36 is installed inside the frame 31, and the output end of the motor 36 is connected to the shaft of the worm 35. Here, the motor 36 drives the worm 35 to rotate, which in turn drives the worm gear 34 and the gear 32 to rotate, achieving a large reduction ratio and increasing torque.

[0029] Please see Figures 1-4 A bracket 37 is fixedly connected to the platform 31, and the discharge pipe of the cement pump 20 is inserted into the bracket 37. Here, the discharge pipe of the cement pump 20 is inserted into the bracket 37, so that the discharge port is aligned with the ash hopper 40 to realize material feeding. When the device is folded and stored, the discharge pipe can be straightened or removed and stored separately.

[0030] Please see Figures 1-4 The ash hopper 40 includes a push plate 41 and an electric cylinder 42. The front end of the push plate 41 is hinged to the frame 31, and the two ends of the electric cylinder 42 are hinged to the push plate 41 and the frame 31, respectively. Here, the cement slurry is pushed towards the wall inside the push plate 41. The electric cylinder 42 can adjust the tilt angle of the push plate 41, thereby adjusting the pressure on the wall.

[0031] Please see Figures 1-4 The ash hopper 40 also includes a baffle 43. A baffle 43 is provided at each end of the push plate 41, and the baffle 43 is fixedly connected to the frame 31. Here, the baffle 43, the push plate 41 and the wall form a hopper shape, and the baffle 43 is used to prevent cement slurry from overflowing from both sides as much as possible.

[0032] When this application is in use: When the folding frame 10 is unfolded, the four casters 14 support the ground, making it easy to move and also locking the position. The slide moves backward and is then locked in place by the spring pin 19. The motor 36 drives the worm gear 35 to rotate, which in turn drives the worm wheel 34 and the gear 32 to rotate. The gear 32 rolls along the rack 33 and moves upward. The cement pump 20 feeds material into the ash hopper 40. The push plate 41 pushes the cement slurry onto the wall. The baffle 43 is used to prevent the cement slurry from overflowing from both sides as much as possible. When folding, the slide bar 17 at the upper end of the support rod 16 slides upward in the slide groove. After the horizontal frame 12 and the vertical frame 11 come together, the support rod 16 is embedded in the horizontal frame 12. Then the screw 18 is screwed to the upper end of the vertical frame 11 and screwed into the top of the horizontal frame 12 to achieve locking. At this time, the device can be pushed by the pull ring 15 and the two rear casters 14.

[0033] In summary, the crossbeam 12 can be unfolded to form an L-shape, and the cement pump 20 is moved backward to act as a counterweight to avoid adding extra weight. The crossbeam 12 amplifies the torque, so that the folding frame 10 can obtain stable support during operation. The cement pump 20 is used to supply material into the ash hopper 40, thereby simplifying the structure.

[0034] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A plastering device for building walls, characterized in that, The folding frame includes an L-shaped frame, which comprises an upright frame and a horizontal frame. The horizontal frame is hinged to the upright frame. A bracket is slidably connected to the horizontal frame. A spring pin is provided on the bracket and pinned to the horizontal frame. A cement pump is provided on the bracket. A lifting platform is provided on the upright frame. An ash hopper is provided on the lifting platform.

2. The building wall plastering device as described in claim 1, characterized in that, The uprights and crossbeams are equipped with self-locking casters, and the lower end of the uprights is equipped with a pull ring.

3. The building wall plastering device as described in claim 2, characterized in that, The folding frame also includes a support rod, the lower end of which is hinged to the crossbar, and a slide rod is fixedly connected to the upper end of the support rod. A slide groove adapted to the slide rod is provided on the upright frame, and a screw is screwed onto the slide rod and screwed onto the upright frame.

4. The building wall plastering device as described in claim 3, characterized in that, The lifting platform includes a frame, a gear, and a rack. The frame is slidably connected to the upright, the rack is fixedly connected to the upright, the gear is rotatably connected to the frame, and the gear meshes with the rack.

5. The building wall plastering device as described in claim 4, characterized in that, A worm gear is fixedly connected to the gear, and a worm is meshed on the worm gear. A motor is installed inside the frame, and the output end of the motor is connected to the worm shaft.

6. The building wall plastering device as described in claim 5, characterized in that, A support is fixedly connected to the platform, and the discharge pipe of the cement pump is inserted into the support.

7. The building wall plastering device as described in claim 6, characterized in that, The ash hopper includes a pusher plate and an electric cylinder. The front end of the pusher plate is hinged to the frame, and the two ends of the electric cylinder are respectively hinged to the pusher plate and the frame.

8. The building wall plastering device as described in claim 7, characterized in that, The ash hopper also includes baffles, with one baffle at each end of the push plate, and the baffles are fixedly connected to the frame.