Wall surface trowelling device

Abstract

The utility model discloses a wall surface trowelling device, and particularly relates to the technical field of building construction, the wall surface trowelling device comprises a bottom plate, one side of the top of the bottom plate is provided with a track parallel to the bottom plate, the track is provided with two sliding blocks in a linear sliding mode, and the top of each sliding block is fixedly connected with a connecting seat; the two connecting seats are jointly connected with a crossed telescopic arm, the two connecting seats are rotationally connected with two crossed rods at the bottom of the crossed telescopic arm correspondingly, a lifting rod is fixedly connected to a hidden rotating shaft at the lowermost portion of the crossed telescopic arm, the lifting rod is fixedly connected with an electric telescopic rod which is vertically arranged, and the bottom of the electric telescopic rod is fixedly connected with the bottom plate; according to the wall surface trowelling device, the moving speed of the scraping plate is uniform and stable, large-range trowelling of the building wall surface is rapidly achieved, the construction speed is high, and the construction quality is stable.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and specifically relates to a wall smoothing device. Background Technology

[0002] Wall smoothing is an important step in building decoration, affecting not only the aesthetics of the wall but also the quality of subsequent decorative materials such as paint and wallpaper. In building decoration, wall smoothing is often achieved by applying putty.

[0003] Applying putty is a crucial step in smoothing walls during renovation. First, the wall surface is cleaned to ensure it is dust-free. A bonding agent is then applied to enhance adhesion, depending on the wall's condition. Next, the putty paste is mixed and applied evenly to the wall, usually requiring multiple thin coats. After each coat dries completely, it is sanded smooth to remove unevenness and seams. This process may be repeated several times to achieve the desired effect. Finally, the wall is cleaned and its smoothness is checked, preparing for subsequent painting or wallpapering. However, after the initial application of putty paste, workers often use hand tools to smooth the surface. Due to the lack of reference points for the tools and the varying skill levels of the workers, hand-smoothing results in inconsistent smoothness and low efficiency. Therefore, a new type of wall smoothing device is needed. Utility Model Content

[0004] To solve the above problems, this utility model discloses a wall smoothing device.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A wall smoothing device includes a base plate. A track parallel to the base plate is mounted on one side of its top. Two sliders are linearly slidably mounted on the track, and a connecting seat is fixedly connected to the top of each slider. The two connecting seats are connected to a cross telescopic arm, and the two connecting seats are rotatably connected to two cross rods at the bottom of the cross telescopic arm. A lifting rod is fixedly connected to a concealed pivot at the bottom of the cross telescopic arm. The lifting rod is fixedly connected to a vertically arranged electric telescopic rod whose bottom is fixedly connected to the base plate. An angle-adjustable smoothing mechanism is connected to the top of the cross telescopic arm via a connecting mechanism. The connecting mechanism includes a connecting box connected to the angle-adjustable smoothing mechanism on one side, a gear rotatably connected to the middle of the connecting box, and a T-shaped rack horizontally slidably mounted in the inner cavity of the connecting box at the upper and lower parts of the gear. A connecting shaft is connected to the bent end of each T-shaped rack, and the two connecting shafts are rotatably connected to two cross rods at the top of the cross telescopic arm.

[0007] As a preferred embodiment of this utility model, the angle adjustment and smoothing mechanism includes: a rotating seat fixedly connected to the side wall of the connecting box; a scraper rotatably connected to the rotating seat; an adjusting rod coaxially inserted into the rotating shaft of the scraper; the adjusting rod slidingly connected to the rotating seat horizontally, and the adjusting rod and the rotating seat cannot rotate relative to each other; the adjusting rod is provided with a coaxial angle chuck; and the rotating shaft of the scraper is provided with a locking tooth adapted to the angle chuck; and the adjusting rod is sleeved with a spring disposed between the angle chuck and the connecting box.

[0008] As a preferred technical solution of this utility model, the angle chuck of the adjusting rod is provided with a number of evenly distributed ring teeth.

[0009] As a preferred embodiment of this utility model, the end of the adjusting rod away from the rotating seat is provided with an annular protrusion.

[0010] As a preferred embodiment of this utility model, the upper surface of the base plate is connected to two control switches that control the raising and lowering of the electric telescopic rod.

[0011] As a preferred embodiment of this utility model, a number of counterweights are installed on the other side of the top of the base plate, and at least three casters are installed on the bottom of the base plate.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This wall smoothing device, when applying putty, involves placing one side of the angle-adjustable smoothing mechanism on the base plate against the wall, then pressing one of the control switches to extend or retract the electric telescopic rod. The electric telescopic rod, through the lifting rod, drives the cross telescopic arm to extend and retract, causing the scraper of the angle-adjustable smoothing mechanism at the top of the cross telescopic arm to move and smooth the putty on the wall. The scraper moves at a uniform and stable speed, quickly achieving large-area smoothing of the building wall, with fast construction speed and stable construction quality.

[0014] Second, the wall smoothing device is equipped with an angle-adjustable smoothing mechanism, which allows the scraper to tilt downwards when it moves up and tilt upwards when it moves down, achieving bidirectional smoothing and improving ease of use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure from another angle of an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the slider, connecting seat, cross telescopic arm, and lifting rod in an embodiment of the present utility model;

[0018] Figure 4 This is an exploded view of the crossbar and concealed pivot of an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the cross telescopic arm, angle adjustment smoothing mechanism, and connecting mechanism in an embodiment of this utility model;

[0020] Figure 6 This is a structural schematic diagram of the cross telescopic arm and part of the connecting mechanism in an embodiment of this utility model;

[0021] Figure 7 An exploded view of the angle adjustment and smoothing mechanism according to an embodiment of this utility model.

[0022] Figure 8 This is an embodiment of the present utility model. Figure 7 Enlarged view of point A in the middle.

[0023] List of identifiers in attached diagrams:

[0024] 1. Base plate; 2. Track; 3. Slider; 4. Connecting seat;

[0025] 5. Cross telescopic boom; 501. Cross bar; 502. Concealed pivot;

[0026] 6. Lifting pole; 7. Electric telescopic pole;

[0027] 8. Angle adjustment and smoothing mechanism; 801. Rotary seat; 802. Scraper; 803. Adjusting rod; 804. Spring;

[0028] 9. Connecting mechanism; 901. Connecting box; 902. Gear; 903. T-shaped rack; 904. Connecting shaft;

[0029] 10. Control switch; 11. Counterweight; 12. Casters. Detailed Implementation

[0030] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0031] Please see Figure 1-8A wall smoothing device includes a base plate 1, with a track 2 parallel to the top of one side of the base plate 1. The base plate 1 is equipped with a leveling mechanism (not shown in the attached embodiment) to detect whether the placed surface is level. Two sliders 3 are linearly slidably mounted on the track 2, and a connecting seat 4 is fixedly connected to the top of each slider 3. A row of rollers is provided on both sides of each slider 3, making rolling contact with the track 2. The two connecting seats 4 are connected to a cross telescopic arm 5, and the two connecting seats 4 are rotatably connected to two cross rods 501 at the bottom of the cross telescopic arm 5. The cross telescopic arm 5 consists of several cross rods 501, several ordinary rotating shafts, and several hidden rotating shafts 502. The middle intersection of two cross rods 501 is rotatably connected by a hidden rotating shaft 502, and the end intersection of two cross rods 501 is rotatably connected by an ordinary rotating shaft. A lifting rod 6 is fixedly connected to the hidden rotating shaft 502 at the bottom of the cross telescopic arm 5, and the horizontal plate portion of the lifting rod 6 extends downwards and connects to the hidden rotating shaft 502. The lifting rod 6 is fixedly connected to a vertically installed electric telescopic rod 7, the bottom of which is fixedly connected to the base plate 1. The top of the cross telescopic arm 5 is connected to an angle adjustment and smoothing mechanism 8 via a connecting mechanism 9.

[0032] The connecting mechanism 9 includes a connecting box 901 on one side that connects to the angle adjustment and smoothing mechanism 8. A gear 902 is rotatably connected to the middle of the connecting box 901. The upper and lower parts of the gear 902 respectively mesh with a T-shaped rack 903 horizontally slidably installed inside the connecting box 901. Each bent end of the T-shaped rack 903 is connected to a connecting shaft 904, and the two connecting shafts 904 are rotatably connected to two cross rods 501 at the top of the cross telescopic arm 5. When the cross telescopic arm 5 extends or retracts, the included angle between the two cross rods 501 connected to the connecting mechanism 9 changes. Since these two cross rods 501 are respectively connected to a T-shaped rack 903 via the connecting shaft 904, and the two T-shaped racks 903 mesh with the same gear 902, the two cross rods 501 rotate synchronously at the same angle, so that the connecting mechanism 9 only moves vertically up and down when driven by the cross telescopic arm 5.

[0033] The angle-adjusting smoothing mechanism 8 includes: a rotating seat 801 fixedly connected to the side wall of the connecting box 901, and a scraper 802 rotatably connected to the rotating seat 801. An adjusting rod 803 is coaxially inserted into the rotating shaft of the scraper 802. The adjusting rod 803 is horizontally slidably connected to the rotating seat 801, and the adjusting rod 803 and the rotating seat 801 cannot rotate relative to each other. In the embodiment shown in the attached drawing, the cross-section of the part where the adjusting rod 803 and the rotating seat 801 are horizontally slidably connected is hexagonal. The adjusting rod 803 is provided with a coaxial angle chuck, and the rotating shaft of the scraper 802 is provided with teeth adapted to the angle chuck. A spring 804 is sleeved on the adjusting rod 803 and disposed between the angle chuck and the connecting box 901, wherein the spring 804 presses the adjusting rod 803 against the scraper 802.

[0034] The chuck of the adjusting rod 803 has several evenly distributed annular teeth. An annular protrusion is located at the end of the adjusting rod 803 furthest from the rotating seat 801. Pulling the annular protrusion of the adjusting rod 803 separates the teeth of the adjusting rod 803 from the teeth of the scraper 802, allowing the scraper 802 to rotate and adjust its angle. When the teeth of the adjusting rod 803 and the scraper 802 are engaged, the angle of the scraper 802 is fixed.

[0035] Two control switches 10, each controlling the raising and lowering of the electric telescopic rod 7, are connected to the upper surface of the base plate 1. Several counterweights 11 are installed on the other side of the top of the base plate 1, and at least three casters 12 are installed on the bottom of the base plate 1. The counterweights 11 contain the power battery and the control device for the electric telescopic rod 7. In the embodiment shown in the attached drawing, a caster 12 is provided at each of the four corners of the base plate 1.

[0036] Working principle:

[0037] When in use, place one side of the angle-adjustable smoothing mechanism 8 on the base plate 1 against the wall, then step on one of the control switches 10 to control the electric telescopic rod 7 to extend or shorten. The electric telescopic rod 7 drives the cross telescopic arm 5 to extend and retract through the lifting rod 6, so that the scraper 802 of the angle-adjustable smoothing mechanism 8 at the top of the cross telescopic arm 5 moves to smooth the putty on the wall. The part of the wall that cannot be reached by the scraper 802 at the bottom of the wall is smoothed manually.

[0038] Before the scraper 802 smooths the wall surface, pulling the annular protrusion of the adjusting rod 803 can separate the locking teeth of the adjusting rod 803 from the locking teeth of the scraper 802. Then, rotate the scraper 802 so that its edge fits against the wall surface. Then, release the adjusting rod 803. Under the pressure of the spring 804, the locking teeth of the adjusting rod 803 and the locking teeth of the scraper 802 are engaged together. The scraper 802 moves at a fixed angle to smooth the wall surface. When the scraper 802 moves upward, it tilts downward, and when the scraper 802 moves downward, it tilts upward.

[0039] It should be noted that the above content merely illustrates the technical concept of this utility model and cannot be used to limit the scope of protection of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and all such improvements and modifications fall within the scope of protection of the claims of this utility model.

Claims

1. A wall smoothing device, comprising a base plate (1), characterized in that, A parallel track (2) is installed on one side of the top of the base plate (1). Two sliders (3) are linearly slidably mounted on the track (2), and a connecting seat (4) is fixedly connected to the top of each slider (3). The two connecting seats (4) are connected to a cross telescopic arm (5), and the two connecting seats (4) are rotatably connected to two cross rods (501) at the bottom of the cross telescopic arm (5). A lifting rod (6) is fixedly connected to the hidden pivot (502) at the bottom of the cross telescopic arm (5). The lifting rod (6) is fixedly connected to a vertically set electric telescopic rod (7) whose bottom is fixedly connected to the base plate (1). The top of the arm (5) is connected to an angle-adjusting smoothing mechanism (8) via a connecting mechanism (9); the connecting mechanism (9) includes: a connecting box (901) on one side connected to the angle-adjusting smoothing mechanism (8), a gear (902) rotatably connected to the middle of the connecting box (901), and a T-shaped rack (903) horizontally slidably installed in the inner cavity of the connecting box (901) meshing with the upper and lower parts of the gear (902), and a connecting shaft (904) connected to the bent end of each T-shaped rack (903), and the two connecting shafts (904) are rotatably connected to the two cross rods (501) at the top of the cross telescopic arm (5).

2. The wall smoothing device according to claim 1, characterized in that, The angle adjustment and smoothing mechanism (8) includes: a rotating seat (801) fixedly connected to the side wall of the connecting box (901), a scraper (802) rotatably connected to the rotating seat (801), an adjusting rod (803) coaxially rotatably inserted into the rotating shaft of the scraper (802), the adjusting rod (803) being horizontally slidably connected to the rotating seat (801), and the adjusting rod (803) and the rotating seat (801) not being able to rotate relative to each other, the adjusting rod (803) being provided with a coaxial angle chuck, and the rotating shaft of the scraper (802) being provided with a cleaving tooth adapted to the angle chuck, and the adjusting rod (803) being sleeved with a spring (804) provided between the angle chuck and the connecting box (901).

3. A wall smoothing device according to claim 2, characterized in that, The angle chuck of the adjusting rod (803) is provided with a number of evenly distributed ring teeth.

4. A wall smoothing device according to claim 2, characterized in that, The end of the adjusting rod (803) away from the rotating seat (801) is provided with an annular protrusion.

5. A wall smoothing device according to claim 1, characterized in that, The upper surface of the base plate (1) is connected to two control switches (10) that control the raising and lowering of the electric telescopic rod (7).

6. A wall smoothing device according to claim 1, characterized in that, Several counterweights (11) are installed on the other side of the top of the base plate (1), and at least three casters (12) are installed on the bottom of the base plate (1).

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