A device for quickly creating screed strips in wall plastering
By using a lever plate and slider cutter device to quickly form flat screed strips, the problem of cumbersome and inaccurate existing construction processes is solved, and efficient and high-quality wall plastering construction is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING SECOND URBAN CONSTR ENG CO
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-03
AI Technical Summary
The existing wall screed construction process is cumbersome and lacks precision, which affects the construction quality.
A combination device consisting of a lever, a slider, and a cutter is used. The lever presses the mortar of the screed together, while the slider slides and drives the cutter to cut off the excess mortar, forming a smooth screed strip.
It improves construction efficiency and accuracy, ensures that the surface of the screed strips is flat and vertical, and enhances construction quality.
Smart Images

Figure CN224452167U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction, and in particular to a device for quickly constructing screed strips in wall plastering. Background Technology
[0002] Plastering is a common plastering technique used in building decoration to ensure the flatness and verticality of the wall surface. It involves creating screed strips through plastering, which serve as a standard reference for the plaster thickness, making the entire wall surface smoother after plastering and laying a good foundation for subsequent painting and tiling processes.
[0003] Currently, the construction process for screed strips typically uses infrared measuring instruments as a reference. Mortar is then poured onto the wall, and the thickness of the screed strips is adjusted using a trowel based on the measuring instrument's rays to complete the installation. However, this construction process is cumbersome and lacks precision, affecting the construction quality and requiring improvement. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a device for quickly constructing screed strips in wall plastering, which can improve construction efficiency and construction quality.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a device for quickly constructing screed strips in wall plastering, comprising:
[0006] The screed is installed upright and vertically on the wall surface, and the mortar is pressed firmly against it.
[0007] The slider has a U-shaped cross-section and is connected to the lever plate for both clamping and vertical sliding.
[0008] The cutter, in an L-shape, is located at both ends of the slider and is used to cut the mortar.
[0009] In a preferred embodiment, the present invention can be further configured such that: a steel wire is laterally arranged on the slider to abut against the inner side of the lever plate.
[0010] In a preferred embodiment, the present invention can be further configured such that a rope is provided on the back side of the slider.
[0011] In a preferred embodiment, the present invention can be further configured such that: guide grooves are vertically provided on both sides and the outer side of the lever plate, and guide blocks are provided on the slider and embedded in the guide grooves.
[0012] In a preferred embodiment, the present invention can be further configured such that: the cutter includes an inner slice, an outer slice, and a blade; the inner slice is connected to the slider; the outer slice is disposed outside the inner slice and is laterally slidably connected to the inner slice; and the blade is vertically disposed on the outer slice and is used to abut against the wall.
[0013] In a preferred embodiment, the present invention can be further configured such that: a screw is threaded onto the inner slice, a horizontally arranged strip hole is provided on the outer slice for the screw to pass through, a folded edge is provided at the tail end of the inner slice, and a spring is horizontally arranged between the outer slice and the folded edge.
[0014] In a preferred embodiment, the present invention can be further configured such that a reinforcing plate is provided between the outer slice and the blade.
[0015] In summary, this utility model has the following beneficial effects:
[0016] 1. By setting up a support plate against the mortar and a vertically sliding slider on the support plate, the cutters on both sides of the slider can automatically cut off the excess mortar and automatically form mortar strips on the wall. This makes the forming process of the mortar strips faster and more convenient, improving construction efficiency. At the same time, the surface and sides of the mortar strips are flat and perpendicular to each other, thereby improving the accuracy of the mortar strips and improving construction quality.
[0017] 2. By setting steel wires on the slider, it is possible to quickly separate and smoothly cut the formed punching ribs from the lever plate, making the removal and unloading of the lever plate more convenient, while ensuring the flatness of the punching rib surface.
[0018] 3. By setting a telescopic cutter, it can be adapted to uneven wall surfaces, thereby achieving stable cutting of rib strips. Attached Figure Description
[0019] Figure 1 This is a structural schematic diagram of an embodiment;
[0020] Figure 2 This is a schematic diagram of the connection relationship in the embodiment;
[0021] Figure 3 This is a schematic diagram of the cutter structure in an embodiment.
[0022] Reference numerals: 1. Bar plate; 11. Guide groove; 2. Slider; 21. Guide block; 22. Rope; 3. Cutter; 31. Inner slice; 32. Outer slice; 33. Blade; 34. Screw; 35. Strip hole; 36. Reinforcing plate; 37. Folded edge; 38. Spring; 4. Steel wire. Detailed Implementation
[0023] The present invention will be further described in detail below with reference to the accompanying drawings.
[0024] like Figure 1 , Figure 2 As shown, a device for quickly constructing spur strips in wall plastering includes a lever plate 1, a slider 2, and a cutter 3.
[0025] like Figure 1 , Figure 2 As shown, the lever 1 is erected vertically on the wall surface and presses against the mortar. The slider 2 has a U-shaped cross-section and is clamped and vertically slidably connected to the lever 1. A steel wire 4 is horizontally arranged on the slider 2 to abut against the inner side of the lever 1, so as to achieve cutting and separation between the lever 1 and the mortar.
[0026] like Figure 1 , Figure 2 As shown, guide grooves 11 are vertically arranged on both sides and the outer side of the lever plate 1. A guide block 21 embedded in the guide groove 11 is provided on the slider 2 to achieve stable sliding control of the slider 2. A rope 22 is provided on the back side of the slider 2 to facilitate pulling the slider 2 to slide vertically.
[0027] like Figure 2 , Figure 3 As shown, the cutter 3 is L-shaped and is located at both ends of the slider 2. The cutter 3 includes an inner slice 31, an outer slice 32, and a blade 33.
[0028] like Figure 2 , Figure 3 As shown, the inner slice 31 is horizontally connected to the slider 2, and the outer slice 32 is disposed on the outside of the inner slice 31. The inner slice 31 is threaded with a screw 34, and the outer slice 32 is horizontally provided with a strip hole 35 for the screw 34 to pass through, so that the outer slice 32 is laterally slidably connected to the inner slice 31.
[0029] like Figure 2 , Figure 3 As shown, the blade 33 is vertically positioned on the outer slice 32 and is used to abut against the wall. A reinforcing plate 36 is provided between the outer slice 32 and the blade 33 to increase the structural strength of the blade 33 and prevent it from bending. A folded edge 37 is provided at the tail end of the inner slice 31, and a spring 38 is horizontally provided between the outer slice 32 and the folded edge 37.
[0030] When it is necessary to install screed strips on the wall, first place an infrared measuring instrument on the ground and calculate the thickness of the screed strips based on the on-site measurement results. Then apply mortar to the wall and scrape the mortar all over the inside of the screed strip 1.
[0031] Then, lean the bar 1 vertically against the wall and, referring to the laser line emitted by the infrared measuring instrument, start pressing and tapping the bar 1 to make the bar 1 parallel to the laser line, so that the bar 1 is perpendicular to the rib strip.
[0032] Then, the rope 22 is pulled to drive the slider 2 to slide slowly from top to bottom. Under the action of the guide block 21 on the slider 2 and the guide groove 11 on the lever plate 1, the slider 2 slides down steadily. At the same time, the slider 2 drives the cutter 3 and the steel wire 4 to slide down synchronously.
[0033] At the same time, the steel wire 4 is attached to the inner side of the slat plate 1. The steel wire 4 can be used to achieve quick separation and flat cutting between the formed punching rib strip and the slat plate 1, making the removal and unloading process of the slat plate 1 more convenient, while ensuring the flatness of the punching rib strip surface.
[0034] Furthermore, during the sliding process of the cutter 3, the inner slice 31 and the outer slice 32 are used to cut excess mortar on both sides, while the blade 33 is used to cut the mortar on the wall surface. When the cutter 3 is in operation, the unevenness of the wall surface will cause the outer slice 32 to slide laterally. At this time, under the action of the spring 38, the outer slice 32 automatically slides, thus achieving stable cutting of the reinforcing ribs using the telescopic cutter 3.
[0035] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.
Claims
1. A device for rapidly constructing screed strips in wall plastering, characterized in that: include: The bar plate (1) is set upright and vertically on the wall surface and pressed with mortar. The slider (2) has a U-shaped cross-section and is clamped and vertically slidably connected to the lever plate (1); The cutter (3) is L-shaped and located at both ends of the slider (2), and is used to cut the mortar.
2. A device for quickly constructing a bar in wall plastering according to claim 1, characterized in that: The slider (2) is provided with a steel wire (4) that abuts against the inside of the lever plate (1).
3. A device for quickly constructing a bar in wall plastering according to claim 1, characterized in that: A rope (22) is provided on the back side of the slider (2).
4. The device for rapidly constructing screed strips in wall plastering according to claim 3, characterized in that: The lever plate (1) has guide grooves (11) vertically arranged on both sides and the outer side, and the slider (2) has guide blocks (21) embedded in the guide grooves (11).
5. A device for quickly constructing a bar in wall plaster according to claim 1, characterized in that: The cutter (3) includes an inner slice (31), an outer slice (32), and a blade (33). The inner slice (31) is connected to the slider (2). The outer slice (32) is disposed outside the inner slice (31) and is laterally slidably connected to the inner slice (31). The blade (33) is vertically disposed on the outer slice (32) and is used to abut against the wall.
6. A device for quickly constructing a bar in wall plaster according to claim 5, characterized in that: The inner slice (31) is threaded with a screw (34), the outer slice (32) is horizontally provided with a strip hole (35) for the screw (34) to pass through, the tail end of the inner slice (31) is provided with a folded edge (37), and a spring (38) is horizontally provided between the outer slice (32) and the folded edge (37).
7. A device for quickly constructing a bar in wall plaster according to claim 6, characterized in that: A reinforcing plate (36) is provided between the outer slice (32) and the blade (33).