A plastering device
By designing detachable left and right scraper components, the problem that existing plastering devices are not suitable for corner or irregularly shaped walls is solved, achieving effective plastering and uniform mortar distribution for different walls.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 中建五局第四建设有限公司
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-26
AI Technical Summary
Existing plastering equipment is not suitable for plastering corners or irregularly shaped walls, and the mortar does not adhere well to the wall.
A plastering device was designed, including a base, a column, a detachable left telescopic arm and a right telescopic arm. The left and right scrapers are connected by a detachable connector. The left and right scrapers can be formed into straight strips or vertical shapes as needed to adapt to different wall structures. The design of the inclined plate and mortar groove ensures that the mortar is evenly smoothed.
It enables effective plastering of corners and irregularly shaped walls, enhances the adhesion between mortar and the wall, and is suitable for plastering walls of different sizes and shapes.
Smart Images

Figure CN224281883U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building construction equipment technology, specifically relating to a plastering device. Background Technology
[0002] In building construction, plastering can be done in various ways, such as manual application, fully automatic plastering, and mortar spraying followed by smoothing. Fully automatic plastering equipment places mortar in a hopper, gradually raises the hopper, and applies the mortar to the wall. A problem with this method is that the mortar's adhesion to the wall is not strong. Mortar spraying followed by smoothing involves using a mortar spraying device to first spray mortar onto the wall, and then using a plastering device to smooth it. Currently, most plastering devices are linear and not suitable for plastering corners or irregularly shaped walls. Utility Model Content
[0003] The purpose of this invention is to provide a technical solution to the problem that existing plastering devices are not suitable for plastering corner or irregularly shaped walls.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A plastering device includes a base and a column. A mounting seat that moves up and down along the column is installed on the column. A left telescopic arm and a right telescopic arm are respectively installed on the left and right sides of the mounting seat. A left scraper is connected to the left telescopic arm, and a right scraper is connected to the right telescopic arm. The left and right scrapers are connected by a detachable connector. Both the left and right scrapers are straight strips, and each scraper has a mortar groove for receiving mortar. Multiple connecting seats are provided on the walls of the mortar grooves for connecting the left and right scrapers, the left scraper and the connector, and the connector and the right scraper. The connector includes a base plate and side plates on adjacent sides, as well as an open structure on adjacent sides that communicates with the mortar grooves of the left and right scrapers respectively. When the connector is removed, the left and right scrapers are connected in a straight strip shape; when the connector is installed, the left and right scrapers are perpendicular, and the mortar groove also forms a vertical shape.
[0006] Furthermore, the open surfaces of the connector are perpendicular to the end faces of the left and right scrapers, respectively. The bottom plate of the connector is provided with a first connecting ear that is positioned and connected to the left scraper. The left and right scrapers are provided with a second connecting ear corresponding to the first connecting ear. The first and second connecting ears are threaded and connected by a screw.
[0007] Furthermore, the left scraper connecting seat on the left scraper is located inside the left scraper. The left connecting seat on the connector that cooperates with the left scraper extends out of the connector and is located above the left scraper. The left scraper connecting seat is provided with a left scraper pin hole, and the left connecting seat is provided with a left connecting pin hole. The central axis of the left scraper pin hole and the left pin hole extends vertically and is used to insert a left pin.
[0008] Furthermore, the right scraper connecting seat on the right scraper extends to the outside of the right scraper, and the right connecting seat on the connector that mates with the right scraper is located inside the connector and below the right scraper. The right scraper connecting seat is provided with a right scraper pin hole, and the right connecting seat is provided with a right connecting pin hole. The central axis of the right scraper pin hole and the right pin hole extends vertically and is used to insert a right pin.
[0009] Furthermore, the front groove plates of the left scraper and the right scraper are inclined plates with the same inclination angle, so that the mortar gradually moves into the mortar groove along the inclined plates; the two side plates of the connector are also inclined plates with the same inclination angle as the left scraper and the right scraper, so as to form a plane when the mortar is applied to the wall.
[0010] Furthermore, the mounting base is provided with a right-angle block, and the left telescopic arm and the right telescopic arm are respectively installed on the two right-angle sides of the right-angle block; the ends of the left telescopic arm and the right telescopic arm are respectively hinged to the left scraper and the right scraper, and the hinge shafts of the hinges extend in the vertical direction so that the left telescopic arm pulls the left scraper to rotate and the right telescopic arm pulls the right scraper to rotate.
[0011] Furthermore, the left telescopic arm is perpendicular to the left right-angle side, and the right telescopic arm is perpendicular to the right right-angle side.
[0012] Furthermore, the mounting base is an isosceles right-angled triangular block, with a channel for securing the column on the mounting base, and a track for the mounting base to slide on the column.
[0013] Furthermore, a left mortar baffle is provided on the left side of the left scraper, the left mortar baffle is fixed on the left scraper, and a left groove that cooperates with the left mortar baffle is provided on the inner wall of the left scraper; a right mortar baffle is provided on the left side of the right scraper, the left mortar baffle is fixed on the right scraper, and a right groove that cooperates with the right mortar baffle is provided on the inner wall of the right scraper.
[0014] The beneficial effects of this utility model are:
[0015] The plastering device of this utility model, when the connector is removed, the left scraper and the right scraper are connected into a straight strip, which is suitable for plastering large areas of straight walls. When the connector is installed, the left scraper and the right scraper are perpendicular, and the mortar groove also forms a vertical shape, which is suitable for plastering corner positions.
[0016] The plastering device of this utility model has a mortar trough that can collect mortar and can also be used to install and connect multiple connecting seats for left scraper and right scraper, left scraper and connector, and connector and right scraper. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the plastering device structure in Example 1 (the left scraper and the right scraper are perpendicular);
[0018] Figure 2 for Figure 1 Schematic diagram of a local structure in the middle;
[0019] Figure 3 This is a schematic diagram of the plastering device structure in Example 1 (the left scraper and the right scraper are connected in a straight strip);
[0020] Figure 4 This is a schematic diagram of the connecting parts of the plastering device in Example 1.
[0021] In the diagram: 100, base; 200, column; 300, mounting base; 310, left telescopic arm; 320, right telescopic arm; 400, left scraper; 410, second connecting ear; 420, left scraper connecting seat; 430, left mortar baffle; 500, right scraper; 520, right scraper connecting seat; 530, left mortar baffle; 600, connector; 610, base plate; 611, first connecting ear; 620, side plate; 630, left connecting seat; 631, left pin; 640, right connecting seat; 641, right pin; 700, mortar trough. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0023] The implementation of the plastering device in this utility model is as follows: Figure 1-4 As shown.
[0024] Example 1
[0025] The plastering device of this embodiment includes a base 100 and a column 200. A mounting seat 300 that moves up and down along the column is installed on the column. A left telescopic arm 310 and a right telescopic arm 320 are respectively installed on the left and right sides of the mounting seat 300. A left scraper 400 is connected to the left telescopic arm 310, and a right scraper 500 is connected to the right telescopic arm 320. The left scraper 400 and the right scraper 500 are connected by a detachable connector 600. Both the left scraper 400 and the right scraper 500 are straight strips, and both have openings for receiving mortar. The mortar tank 700 has multiple connecting seats on its walls for connecting the left scraper 400 and the right scraper 500, the left scraper 400 and the connecting member 600, and the connecting member 600 and the right scraper 500. The connecting member 600 includes a base plate 610 and side plates 620 on both adjacent sides. Additionally, the adjacent sides have open structures that communicate with the mortar tank 700 of the left scraper 400 and the right scraper 500 respectively. When the connecting member 600 is removed, the left scraper 400 and the right scraper 500 are connected in a straight strip. When the connecting member is installed, the left scraper 400 and the right scraper 500 are perpendicular. The mortar tank 700 also forms a vertical shape.
[0026] The open surfaces of the connector 600 are perpendicular to the end faces of the left scraper 400 and the right scraper 500, respectively. The base plate 610 of the connector 600 is provided with a first connecting ear 611 that is positioned and connected to the left scraper 400. The left scraper 400 and the right scraper 500 are provided with a second connecting ear 410 corresponding to the first connecting ear 611. The first connecting ear 611 and the second connecting ear 410 are threaded and connected by a screw.
[0027] The left scraper connector 420 on the left scraper 400 is located inside the left scraper 400. The left connector 630 on the connector 600, which mates with the left scraper 400, extends out of the connector 600 and is located above the left scraper 400. The left scraper connector 420 is provided with a left scraper pin hole, and the left connector 630 is provided with a left connector pin hole. The central axis of the left scraper pin hole and the left pin hole extends vertically and a left pin 631 is inserted therein. The right scraper connector 520 on the right scraper 500 extends to the outside of the right scraper 500. The right connector 640 on the connector 600, which mates with the right scraper 500, is located inside the connector 600 and below the right scraper 500. The right scraper connector 520 has a right scraper pin hole, and the right connector 640 has a right connector pin hole. The central axis of the right scraper pin hole and the right pin hole extends vertically and a right pin 641 is inserted therein.
[0028] The front groove plates of the left scraper 400 and the right scraper 500 are inclined plates with the same inclination angle, so that the mortar gradually moves into the mortar groove along the inclined plates; the two side plates 620 of the connector 600 are also inclined plates with the same inclination angle as the front groove plates of the left scraper 500 and the right scraper 600, so as to form a plane when the mortar is applied to the wall.
[0029] The mounting base 300 is equipped with a right-angle block. A left telescopic arm 310 and a right telescopic arm 320 are respectively mounted on the two right-angled sides of the right-angle block. The ends of the left telescopic arm 310 and the right telescopic arm 320 are hinged to the left scraper 400 and the right scraper 300, respectively. The hinge axes extend vertically, allowing the left telescopic arm 310 to pull the left scraper 400 to rotate, and the right telescopic arm 320 to pull the right scraper 500 to rotate. The left telescopic arm 310 is perpendicular to the left right-angled side, and the right telescopic arm 320 is perpendicular to the right right-angled side. The mounting base 300 is an isosceles right-angled triangular block. A channel for securing the column 200 is provided on the mounting base 300, and a track for the mounting base to slide on is provided on the column 200.
[0030] A left mortar baffle 430 is provided on the left side of the left scraper 400. The left mortar baffle 430 is fixed on the left scraper. A left groove that mates with the left mortar baffle 430 is provided on the inner wall of the left scraper 400. A right mortar baffle 530 is provided on the left side of the right scraper 500. The left mortar baffle 530 is fixed on the right scraper. A right groove that mates with the right mortar baffle is provided on the inner wall of the right scraper.
[0031] Example 2
[0032] The plastering device described in this embodiment has the same general structure as that in Embodiment 1, but it differs from Embodiment 1 in that the mounting base is a square structure, with one right angle facing the left scraper and the right scraper.
[0033] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.
[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
Claims
1. A plastering device comprising a base, a column; characterized in that: The column is equipped with a mounting base that moves up and down along the column. A left telescopic arm and a right telescopic arm are respectively installed on the left and right sides of the mounting base. A left scraper is connected to the left telescopic arm, and a right scraper is connected to the right telescopic arm. The left and right scrapers are connected by a detachable connector. Both the left and right scrapers are straight strip structures, and both have mortar grooves for receiving mortar. The walls of the mortar grooves are provided with multiple connecting seats for connecting the left and right scrapers, the left scraper and the connector, and the connector and the right scraper. The connector includes a base plate and side plates on both adjacent sides, as well as an open structure on both adjacent sides that communicate with the mortar grooves of the left and right scrapers respectively. When the connector is removed, the left and right scrapers are connected in a straight strip shape. When the connector is installed, the left and right scrapers are perpendicular, and the mortar grooves also form a vertical shape.
2. A trowelling device according to claim 1, characterised in that: The open surfaces of the connectors are perpendicular to the end faces of the left and right scrapers, respectively. The bottom plate of the connectors is provided with a first connecting ear that is positioned and connected to the left scraper. The left and right scrapers are provided with a second connecting ear corresponding to the first connecting ear. The first and second connecting ears are threaded and connected by a screw.
3. A trowelling device according to claim 1, characterised in that: The left scraper connecting seat on the left scraper is located inside the left scraper. The left connecting seat on the connector that cooperates with the left scraper extends out of the connector and is located above the left scraper. The left scraper connecting seat is provided with a left scraper pin hole and the left connecting seat is provided with a left connecting pin hole. The central axis of the left scraper pin hole and the left pin hole extends vertically and is used to insert a left pin.
4. A trowelling device according to claim 1, characterised in that: The right scraper connecting seat on the left scraper extends to the outside of the right scraper. The right connecting seat on the connector that mates with the right scraper is located inside the connector and below the right scraper. The right scraper connecting seat has a right scraper pin hole and the right connecting seat has a right connecting pin hole. The central axis of the right scraper pin hole and the right pin hole extends vertically and is insulated with a right pin.
5. The plastering device according to claim 1, characterized in that: The front groove of the right scraper and the right scraper plate is an inclined plate with the same inclination angle, so that the mortar gradually moves into the mortar groove along the inclined plate; the two side plates of the connector are also inclined plates with the same inclination angle as the left scraper and the right scraper plate, so as to form a plane when the mortar is applied to the wall.
6. The plastering device according to claim 1, characterized in that: The mounting base is provided with a right-angle block, and the left telescopic arm and the right telescopic arm are respectively installed on the two right-angle sides of the right-angle block; the ends of the left telescopic arm and the right telescopic arm are respectively hinged to the left scraper and the right scraper, and the hinge shafts of the hinges extend in the vertical direction so that the left telescopic arm pulls the left scraper to rotate and the right telescopic arm pulls the right scraper to rotate.
7. The plastering device according to claim 6, characterized in that: The left telescopic arm is perpendicular to the left right-angle side, and the right telescopic arm is perpendicular to the right right-angle side.
8. The plastering device according to claim 6, characterized in that: The mounting base is an isosceles right-angled triangular block, with a channel for securing the column on the mounting base, and a track for the mounting base to slide on the column.
9. The plastering device according to claim 1, characterized in that: A left mortar baffle is provided on the left side of the left scraper, and the left mortar baffle is fixed on the left scraper. A left groove that cooperates with the left mortar baffle is provided on the inner wall of the left scraper. A right mortar baffle is provided on the left side of the right scraper, and the left mortar baffle is fixed on the right scraper. A right groove that cooperates with the right mortar baffle is provided on the inner wall of the right scraper.