Portable wall flatness detection device

Abstract

The utility model discloses a portable wall flatness detection device, which relates to the technical field of constructional engineering and comprises a bearing shell, the outer surface of the bearing shell is fixedly connected with a group of U-shaped frames, the outer surface of each U-shaped frame is fixedly connected with a handle, and the outer surface of each handle is sleeved with a handle sleeve. And a group of displacement assemblies are arranged on one side, far away from the U-shaped frame, of the bearing shell. By arranging the displacement assembly, the whole device can conveniently move on a wall, by arranging the detection assembly and a scale plate, the flatness of the wall can be conveniently detected, meanwhile, the wall and the detection assembly can be protected, and by means of mutual cooperative use of the displacement assembly, the detection assembly and the scale plate, the flatness of the wall can be conveniently detected. The friction force between the device and the wall surface can be effectively reduced, the detection process is smoother, meanwhile, the problem of abrasion caused by direct contact between a detection assembly in a traditional device and the wall surface is avoided, and therefore the detection accuracy and the detection efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically a portable wall flatness testing device. Background Technology

[0002] After the house is built, the flatness of the walls needs to be tested. The purpose of the flatness test after construction is to check whether the flatness of the walls is up to standard. The flatness test mainly checks whether there are any depressions or protrusions on the walls. Then, the walls are sanded flat. Uneven walls cannot be tiled, and the effect after applying putty will not be good.

[0003] According to patent announcement CN207717022U, a portable wall flatness testing device for building engineering includes a box body. The box body includes an upper wall and a lower wall. The upper wall has a plurality of holes A arranged in two rows. The lower wall has a plurality of holes B arranged in two rows. Holes A and B correspond one-to-one. A vertical rod A is slidably connected to each hole B. A horizontal plate A is fixed to the upper end of the vertical rod A. The horizontal plate A is located inside the box body. A spring is provided between the horizontal plate A and the lower wall, which is sleeved on the vertical rod A. A vertical rod B is fixed to the upper end of the horizontal plate A and is slidably connected to the hole A. Two vertical plates A are fixed to the upper end of the upper wall.

[0004] The above-mentioned solution uses a ball bearing rolling on the wall to reduce friction, making the device easier to operate and carry. The flatness of the wall is judged by comparing the rod to a standard plate, providing great convenience for users. However, during device movement, the vertical rod B4 remains in contact with the wall, generating friction that causes wear on the contact surface. This wear affects the accuracy of the measurement and can even damage the wall, hindering continuous flatness testing. Therefore, we provide a portable wall flatness testing device to address these issues. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a portable wall flatness detection device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a portable wall flatness testing device, comprising a bearing housing, a set of U-shaped frames fixedly connected to the outer surface of the bearing housing, a handle fixedly connected to the outer surface of the U-shaped frames, a handle sleeve fitted on the outer surface of the handle, a set of displacement components provided on the side of the bearing housing away from the U-shaped frames, a testing component provided inside the bearing housing, and a scale plate fixedly connected to the outer surface of the bearing housing.

[0007] Preferably, the displacement assembly includes a frame fixedly connected to the outer surface of the bearing housing, a limit shaft fixedly connected to the inner wall of the frame, and a roller rotatably connected to the outer surface of the limit shaft.

[0008] Preferably, the detection component includes a guide rod slidably connected to the inner wall of the bearing housing, and the guide rod extends from the inside of the bearing housing to the front and rear sides of the bearing housing.

[0009] Preferably, one end of the guide rod is embedded with a ball bearing, and the outer surface of the ball bearing rotates relative to the inner wall of the guide rod.

[0010] Preferably, a limiting piece is fixedly connected to the outer surface of the guide rod, and the limiting piece is located inside the bearing housing. An indicator plate is fixedly connected to the end of the guide rod away from the ball.

[0011] Preferably, an elastic element is sleeved on the outer surface of the guide rod, one end of the elastic element is fixedly connected to the outer surface of the limiting piece, and the other end of the elastic element is fixedly connected to the inner wall of the bearing housing.

[0012] Preferably, the scale plate is parallel to the guide rod.

[0013] Beneficial effects:

[0014] Compared with existing technologies, this portable wall flatness testing device has the following advantages:

[0015] This invention, by incorporating a displacement component, facilitates the movement of the entire device on a wall. The inclusion of a detection component and a scale plate facilitates the detection of wall flatness while protecting both the wall and the detection component. The coordinated use of the displacement component, detection component, and scale plate effectively reduces friction between the device and the wall, resulting in a smoother detection process. It also avoids the wear and tear caused by direct contact between the detection component and the wall in traditional devices, thereby improving detection accuracy and efficiency. As the roller rolls on the wall, the guide rod maintains stable linear motion. The ball bearings, rolling on the guide rod, move the indicator plate when encountering uneven surfaces. The positional changes of the indicator plate on the scale plate visually reflect the wall flatness, enhancing the intuitiveness of the detection. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0018] Figure 3This is a schematic diagram of the internal structure of the bearing shell of this utility model;

[0019] Figure 4 This is a schematic diagram of the detection component of this utility model.

[0020] In the diagram: 1. Support housing; 2. U-shaped frame; 3. Handle; 4. Handle grip; 5. Displacement assembly; 501. Frame body; 502. Limiting shaft; 503. Roller; 6. Detection assembly; 601. Guide rod; 602. Ball bearing; 603. Limiting plate; 604. Indicator sign; 605. Elastic element; 7. Scale plate. Detailed Implementation

[0021] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0022] See Figures 1-4 A portable wall flatness testing device includes a support housing 1. The support housing 1 is made of high-quality aerospace aluminum alloy and is precision CNC machined. It has a regular rectangular shape with rounded edges and corners, which effectively reduces the overall weight for portability. It provides tight protection for the internal components and is covered with a special anti-corrosion and wear-resistant coating to ensure long-term stability. It can evenly distribute the force and prevent local deformation from affecting the testing accuracy, thus laying a solid foundation for the stable operation of the core components of the device.

[0023] A set of U-shaped frames 2 are fixedly connected to the outer surface of the bearing housing 1. The U-shaped frames 2 are forged from chromium-molybdenum alloy steel and formed by hot working and CNC precision milling. The U-shaped arc is precisely adapted to human ergonomics, which stabilizes the handle 3 and evenly transmits the operating force to the bearing housing 1. This prevents the device from tilting and shaking due to uneven external force, stabilizes the overall structure, and improves the operating feel and control accuracy.

[0024] A handle 3 is fixedly connected to the outer surface of the U-shaped frame 2. A handle cover 4 is fitted onto the outer surface of the handle 3. The handle 3 is integrally molded using carbon fiber reinforced composite material, which is lightweight and has excellent mechanical properties. The handle cover 4 is covered with thermoplastic elastomer to improve comfort.

[0025] A set of displacement components 5 is provided on the side of the bearing housing 1 away from the U-shaped frame 2. The displacement component 5 includes a frame 501 fixedly connected to the outer surface of the bearing housing 1, a limiting shaft 502 fixedly connected to the inner wall of the frame 501, and a roller 503 rotatably connected to the outer surface of the limiting shaft 502. The frame 501 is made of high-strength magnesium alloy die casting, is an isosceles trapezoid, and has a wide bottom to enhance stability and wall adaptability. The inner wall is provided with a mounting position for the limiting shaft. The roller 503 is made of high-elasticity natural rubber and wear-resistant fiber composite, and is covered with a polytetrafluoroethylene self-lubricating coating. It rotates flexibly around the limiting shaft 502. This structure allows the device to slide smoothly on the wall with low rolling friction, reducing energy consumption and wear, improving detection efficiency, protecting the wall and components, ensuring stable and accurate displacement, and laying the foundation for accurate implementation of subsequent detection.

[0026] The housing 1 houses a detection assembly 6. The detection assembly 6 includes a guide rod 601 slidably connected to the inner wall of the housing 1, and a scale plate 7 fixedly connected to the outer surface of the housing 1, parallel to the guide rod 601. The guide rod 601 extends from the interior of the housing 1 to both the front and rear sides. One end of the guide rod 601 is fitted with a ball bearing 602, and the outer surface of the ball bearing 602 rotates relative to the inner wall of the guide rod 601. The guide rod 601 is sintered and precision ground from a microcrystalline glass-ceramic matrix composite material, and both ends are fitted with high-precision ground ball bearings 602. The ball bearings 602 are made of high-purity zirconia ceramic, exhibiting high hardness, wear resistance, and chemical stability, and roll smoothly with the guide rod 601.

[0027] A limiting piece 603 is fixedly connected to the outer surface of the guide rod 601, and the limiting piece 603 is located inside the bearing housing 1. The limiting piece 603 is formed by stamping a thin titanium alloy sheet and is locked to the guide rod 601 with screws to limit the stroke and prevent derailment. An indicator plate 604 is fixedly connected to the end of the guide rod 601 away from the ball 602. The indicator plate 604 is injection molded from high-transparency polycarbonate. An elastic element 605 is sleeved on the outer surface of the guide rod 601. One end of the elastic element 605 is fixedly connected to the outer surface of the limiting piece 603, and the other end of the elastic element 605 is fixedly connected to the inner wall of the bearing housing 1. The elastic element 605 is a nickel-titanium shape memory alloy spring, which adapts to the deformation of the wall surface to provide stable elastic force, so that the ball 602 is in close contact with the wall. When the guide rod 601 moves, it drives the indicator plate 604 to accurately indicate the deviation value on the scale plate 7, realizing high-precision, real-time wall flatness detection.

[0028] Working Principle: When using this invention, the user holds the handle 3 and places the device on a wall. The roller 503 contacts the wall, pushing the device to move. Its rolling motion significantly reduces friction, making the movement smooth. Simultaneously, under the elastic force of the elastic element 605, the ball bearing 602, along with the limiting plate 603 and guide rod 601, will contact the wall. The ball bearing 602 rotates at the end of the guide rod 601, contacts the wall, and rolls with the unevenness of the wall. It is pushed back when encountering a protrusion and rolls forward when encountering a depression, causing the guide rod 601 to shift. The elastic element 605 is subjected to force and provides a restoring force. The indicator 604 moves with the guide rod 601, and the position change of the scale plate 7 is compared to visually display the wall flatness deviation value, achieving efficient, accurate, and non-destructive testing.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable wall flatness testing device, comprising a supporting housing (1), characterized in that: A set of U-shaped frames (2) are fixedly connected to the outer surface of the bearing housing (1), and a handle (3) is fixedly connected to the outer surface of the U-shaped frames (2). A set of displacement components (5) is provided on the side of the bearing housing (1) away from the U-shaped frames (2). A detection component (6) is provided inside the bearing housing (1). A scale plate (7) is fixedly connected to the outer surface of the bearing housing (1).

2. The portable wall flatness testing device according to claim 1, characterized in that: The displacement assembly (5) includes a frame (501) fixedly connected to the outer surface of the bearing housing (1), a limiting shaft (502) fixedly connected to the inner wall of the frame (501), and a roller (503) rotatably connected to the outer surface of the limiting shaft (502).

3. The portable wall flatness testing device according to claim 1, characterized in that: The detection component (6) includes a guide rod (601) slidably connected to the inner wall of the bearing housing (1), and the guide rod (601) extends from the inside of the bearing housing (1) to the front and rear sides of the bearing housing (1).

4. The portable wall flatness testing device according to claim 3, characterized in that: One end of the guide rod (601) is fitted with a ball (602), and the outer surface of the ball (602) rotates with the inner wall of the guide rod (601).

5. A portable wall flatness testing device according to claim 4, characterized in that: The guide rod (601) has a limiting piece (603) fixedly connected to its outer surface, and the limiting piece (603) is located inside the bearing housing (1). An indicator plate (604) is fixedly connected to one end of the guide rod (601) away from the ball (602).

6. A portable wall flatness testing device according to claim 5, characterized in that: An elastic element (605) is sleeved on the outer surface of the guide rod (601). One end of the elastic element (605) is fixedly connected to the outer surface of the limiting piece (603), and the other end of the elastic element (605) is fixedly connected to the inner wall of the bearing housing (1).

7. A portable wall flatness testing device according to claim 1, characterized in that: The outer surface of the handle (3) is fitted with a handle sleeve (4).

8. A portable wall flatness testing device according to claim 3, characterized in that: The scale plate (7) is parallel to the guide rod (601).

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