Vertical wall corner trowelling tool
By designing a vertical corner smoothing tool that includes telescopic legs, a leveling plate, and a telescopic rod, the problem of the lack of verticality adjustment in existing devices is solved, achieving vertical smoothing of corners. It is easy to operate and inexpensive.
Patent Information
- Application Number
- CN202423125718.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The existing wall smoothing device lacks a verticality adjustment device, which makes the operation cumbersome and makes it difficult to ensure the verticality of the wall corners.
Design a vertical corner smoothing tool that includes telescopic legs, a leveling plate, a support rod, a sleeve, and a trowel. The length of the telescopic legs and the telescopic rod can be adjusted by the leveling plate and the horizontal bubble to ensure that the trowel remains vertical, thus achieving vertical smoothing of the corner.
It simplifies the corner smoothing process, ensures the verticality of the corner, has a simple structure, is easy to use and has a low cost, making it suitable for widespread promotion.
Smart Images

Figure CN223621206U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a wall smoothing device used in building construction, specifically a smoothing device that ensures the verticality of wall corners. Background Technology
[0002] Wall plastering is a post-construction task. Scientific plastering provides moisture protection, weathering resistance, and heat insulation, preventing erosion from wind, rain, and snow. While concrete walls constructed with large formwork are smooth and flat, areas such as the intersections of longitudinal and transverse walls, stairwell junctions, and door / window openings require plastering for straightening. For the external corners of walls, columns, and doorways, a 1:2 cement mortar base coat should be applied and leveled with plaster spots. After the mortar has slightly dried, the corners should be smoothed into smaller sections. The width on each side should not exceed 5 cm. All corner guards must be square and straight. Doorway dimensions should be uniformly reduced by 15 mm on each side. In the construction industry, gypsum plaster is widely used for wall plastering. However, when constructing wall corners, it is difficult to ensure that the edges are completely straight and smooth, and that the corner lines are perpendicular.
[0003] Chinese patent document CN11323588A discloses a Reuleaux triangle automatic trowel, which uses a Reuleaux triangle trowel assembly to smooth cement flat surfaces, including right-angle corners, and can smooth large cement surfaces using a moving table assembly.
[0004] The aforementioned patented technology lacks a verticality adjustment device. In order to ensure the verticality of the corner, an auxiliary vertical tool is required to adjust the position of the mechanism before the smoothing work can be carried out, which is quite cumbersome.
[0005] In view of the above, this utility model is hereby proposed. Utility Model Content
[0006] This utility model provides a tool for smoothing vertical wall corners, which solves the problem that existing wall smoothing devices do not have a verticality adjustment device and require the use of auxiliary vertical tools to adjust the position of the mechanism before smoothing can be carried out, making the operation cumbersome.
[0007] To solve the above problems, this utility model provides a tool for smoothing vertical wall corners, including telescopic legs 1, a level 2, a support rod 3, a sleeve 4, a telescopic rod 5, and a trowel 6; at least three telescopic legs 1 are fixed below the level 2; a horizontal bubble 21 is installed on the level 2; the support rod 3 is perpendicular to the level 2, and its lower end is fixed to the center of the level 2; the sleeve 4 is fitted onto the support rod 3, and the sleeve 4 and the support rod 3 are in sliding fit; one end of the horizontally arranged telescopic rod 5 is fixed to the sleeve 4, and the other end is equipped with a trowel 6.
[0008] Furthermore, the tool for smoothing vertical corners according to this utility model also has the following features: three telescopic legs 1 are evenly distributed at an angle and are set to support the level plate 2.
[0009] Furthermore, the present invention provides a tool for smoothing vertical corners, which has the following features: each telescopic leg 1 consists of two interlocking tubes forming a telescopic structure. One tube is supported on the ground and the other is connected to a level. An adjusting screw 11 is provided on the outer sleeve. The inner end of the adjusting screw 11 presses against the inner sleeve, thereby fixing the inner and outer sleeves together.
[0010] Furthermore, the tool for smoothing vertical corners according to this utility model also has the following features: a handle 41 is installed on the sleeve.
[0011] Furthermore, the tool for smoothing vertical corners according to this utility model also has the following characteristics: the horizontal cross-section of the trowel 6 is a right-angled structure.
[0012] Furthermore, the present invention provides a tool for smoothing vertical corners, which has the following features: the telescopic rod 5 is composed of two interlocking tubes forming a telescopic structure, and a telescopic adjustment screw 51 is provided on the outer sleeve. The inner end of the telescopic adjustment screw 51 presses against the inner sleeve, thereby fixing the inner and outer sleeves together.
[0013] Technical effects of this utility model:
[0014] When using the device, adjust the height of the telescopic outriggers according to the actual situation to ensure that the entire device structure is stable and the level bubble on the level plate is centered and the level plate is horizontal. Then, adjust the appropriate length of the telescopic rod by adjusting the bolts. Adjust the telescopic rod up and down by using the handle to drive the right-angle trowel to perform vertical corner troweling work, thereby ensuring that the trowel plate moves up and down in a vertical position.
[0015] It allows for easy adjustment of the vertical angle, ensuring the verticality of the smoothed corner.
[0016] The overall structure is simple and easy to operate.
[0017] It is reasonably designed, easy to use, and inexpensive, making it suitable for widespread adoption. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the telescopic outrigger of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the telescopic rod of this utility model;
[0021] Figure 4 This is a cross-sectional view of the trowel of this utility model.
[0022] Symbols in the diagram: 1. Telescopic outrigger, 11. Outrigger adjusting screw, 2. Leveling plate, 21. Horizontal bubble, 3. Support rod, 4. Sleeve, 4. Handle, 5. Telescopic rod, 51. Telescopic adjusting screw, 6. Pulverizer. Detailed Implementation
[0023] The present invention will now be described in detail using the preferred embodiments.
[0024] like Figure 1-4 As shown, a tool for smoothing vertical corners includes telescopic legs 1, a level 2, a support rod 3, a sleeve 4, a telescopic rod 5, and a trowel 6. At least three telescopic legs 1 are fixed below the level 2, evenly distributed at an angle and supported beneath it. Each telescopic leg 1 consists of two interlocking tubes forming a telescopic structure; one tube supports the ground, and the other connects to the level 2. An adjusting screw 11 is installed on the outer sleeve, with its inner end pressing against the inner sleeve to secure the inner and outer sleeves together. A level bubble 21 is installed on the level 2. By adjusting the telescopic legs 1 and observing the level bubble 21, the level 2 is ensured to be level. The principle of the level bubble is based on the property that the bubble remains at its highest position inside the glass tube. When the main body is tilted, the bubble moves towards the higher end, indicating the direction and angle of tilt. This property keeps the level 2 with the level bubble installed horizontal. The support rod 3 is perpendicular to the leveling plate 2, and its lower end is fixed to the center of the leveling plate 2. A sleeve 4 is fitted onto the support rod 3, and the sleeve 4 and support rod 3 are in sliding contact. A handle 41 is installed on the sleeve. A horizontally positioned telescopic rod 5 is fixed at one end to the sleeve 4, and a trowel 6 is installed at the other end. The trowel 6 has a right-angled horizontal cross-section, which facilitates smoothing inner right-angled corners. The telescopic rod 5 consists of two interlocking tubes forming a telescopic structure. An adjustment screw 51 is installed on the outer sleeve, and the inner end of the adjustment screw 51 presses against the inner sleeve, thus fixing the inner and outer sleeves together. In use, the telescopic rod 5 is adjusted to extend as needed so that the trowel 6 adheres to the wall surface. Moving the sleeve 4 up and down using the handle causes the trowel 5 to move vertically up and down, thus smoothing the corner.
[0025] This utility model relates to a tool for smoothing vertical wall corners. The support rod is vertically connected to the leveling plate, the telescopic rod is telescopic, and the sleeve can slide up and down along the support rod. One end of the telescopic rod is vertically connected to the sleeve, and the other end is vertically connected to the right-angle trowel. The length of the telescopic rod can be adjusted by adjusting bolts, and a leveling bubble is set on the leveling plate.
Claims
1. A tool for smoothing vertical wall corners, characterized in that, It includes telescopic support legs (1), a level plate (2), a support rod (3), a sleeve (4), a telescopic rod (5), and a trowel (6); at least three telescopic support legs (1) are fixed under the level plate (2); a horizontal bubble (21) is installed on the level plate (2); the support rod (3) is perpendicular to the level plate, and the lower end of the support rod (3) is fixed at the center of the level plate (2); the sleeve (4) is fitted onto the support rod (3), and the sleeve (4) and the support rod (3) are in sliding fit; one end of the horizontally arranged telescopic rod (5) is fixed to the sleeve (4), and the other end is equipped with a trowel (6).
2. The tool for smoothing vertical corners as described in claim 1, characterized in that, Three telescopic outriggers (1) are evenly distributed at an angle and are set to support the level plate (2) below.
3. A tool for smoothing vertical corners as described in claim 1 or 2, characterized in that, Each telescopic outrigger (1) consists of two interlocking tubes forming a telescopic structure. One tube is supported on the ground and the other is connected to a leveling plate. An outrigger adjusting screw (11) is installed on the outer sleeve. The inner end of the outrigger adjusting screw (11) presses against the inner sleeve, thereby fixing the inner and outer sleeves together.
4. The tool for smoothing vertical corners as described in claim 1, characterized in that, A handle (41) is installed on the sleeve.
5. The tool for smoothing vertical corners as described in claim 1, characterized in that, The horizontal cross-section of the trowel (6) is a right-angled structure.
6. The tool for smoothing vertical corners as described in claim 1, characterized in that, The telescopic rod (5) consists of two interlocking tubes forming a telescopic structure. An adjustment screw (51) is provided on the outer sleeve. The inner end of the adjustment screw (51) presses against the inner sleeve, thereby fixing the inner and outer sleeves together.