Flatness detection device

By designing an automated flatness detection device, combined with a guide rail, threaded column, and motor-driven measurement system, the problems of large errors and high costs of existing devices have been solved, achieving high-precision and convenient wall flatness detection.

CN224136554UActive Publication Date: 2026-04-17SHANXI BLUE STAR ZHONGJIN CONSTRUCTION ENGINEERING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANXI BLUE STAR ZHONGJIN CONSTRUCTION ENGINEERING CO LTD
Filing Date
2025-06-17
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing wall flatness testing devices have large errors, rely on manual adjustment, and are costly, making them unsuitable for strong light environments or humid conditions.

Method used

A measuring device consisting of a base, guide rail, threaded column, and motor drive was designed. Combined with walking wheels and distance sensors, it automatically records wall undulation data and adjusts the base level using a level to adapt to different ground conditions.

Benefits of technology

It achieves high-precision and convenient flatness detection, adapts to various application scenarios, reduces human error, and lowers costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of construction detection devices, and particularly relates to a flatness detection device which comprises a base. First guide rails are fixedly arranged on the upper side of the base. A first threaded column is rotationally arranged in the first guide rail; a sliding block in threaded connection with the first threaded column is arranged on the first guide rail in a sliding mode. A mounting block which is in threaded connection with the second threaded column is arranged on the second guide rail in a sliding manner; a measuring rod is slidably arranged on the mounting block; a walking wheel is rotationally arranged on one side of the measuring rod; a spring is arranged between the measuring rod and the mounting block; a graduated scale is arranged on the measuring rod; an advancing distance sensor is arranged on one side of the mounting block and outside the measuring rod. According to the utility model, the motor drives the mounting block to move and simultaneously drives the walking wheel to move in a manner of being attached to the wall, the walking wheel and the measuring rod are driven to move through the fluctuation of the wall, the moving distance sensor is used for detecting the movement data, the wall flatness is detected, the operation is convenient, and the measuring accuracy is high.
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Description

Technical Field

[0001] This utility model belongs to the field of construction testing devices, and in particular relates to a flatness testing device. Background Technology

[0002] During indoor construction, after the wall surface is completed, it is necessary to test its flatness to identify and repair any uneven areas in the structural wall. This prevents the plaster layer from becoming hollow or cracked, which would affect the quality and lifespan of subsequent materials. Currently, commonly used indoor wall flatness testing devices include straightedges and laser levels. However, in actual use, straightedges and their matching feeler gauges require manual adjustment by staff, followed by visual judgment of flatness and measurement values. This method has a large margin of error and is highly dependent on work experience. Laser levels are expensive and difficult to use in environments with strong light or damp walls, and require a certain learning curve to operate. Utility Model Content

[0003] The purpose of this utility model is to provide a flatness testing device to solve the technical problems of commonly used indoor wall flatness testing devices, including straightedges and laser levels. In actual use, straightedges and the matching feeler gauges require manual adjustment by the staff, and the flatness and measurement values ​​are judged by the naked eye. The error is large and it is highly dependent on work experience. Laser levels are expensive and difficult to use in strong light environments or damp walls. They also require a certain learning cost.

[0004] To achieve the above objectives, the specific technical solution of the flatness detection device of this utility model is as follows:

[0005] A flatness detection device includes a base; a first guide rail is fixedly mounted on the upper side of the base; a first threaded post is rotatably mounted inside the first guide rail; a slider connected to the first threaded post by a thread is slidably mounted on the first guide rail; a rocker wheel is mounted on one side of the first threaded post extending from the first guide rail; a second guide rail is vertically mounted on the slider; a second threaded post is rotatably mounted inside the second guide rail; a motor is mounted at the lower part of the second guide rail to drive the second threaded post to rotate; a mounting block connected to the second threaded post by a thread is slidably mounted on the second guide rail; a measuring rod is slidably mounted on the mounting block; a traveling wheel is rotatably mounted on one side of the measuring rod; a spring is mounted between the measuring rod and the mounting block; a scale is mounted on the measuring rod; and a travel distance sensor is mounted on one side of the mounting block outside the measuring rod.

[0006] Furthermore, spherical levels are arranged on both sides of the base.

[0007] Furthermore, multiple support legs are slidably provided on the lower side of the base; an adjustment wheel is rotatably provided inside the base on the outside of the support legs; the adjustment wheel and the support legs are connected by a thread.

[0008] This utility model provides a flatness detection device with the following advantages: A second track is installed on the first track slider on the base. Rotating the rocker wheel drives the slider to slide on the first track via the rotating first threaded column. Adjustment is made so that the traveling wheel is in contact with the wall to be tested, and the travel distance sensor detects that it is at the starting position of the measuring rod's scale. At this point, the motor is started, driving the second threaded column to slide the mounting block on the second guide rail. This causes the traveling wheel to move along the wall surface. The unevenness of the wall surface causes the traveling wheel to undulate, simultaneously causing the measuring rod to slide on the mounting block. The travel distance sensor detects the changes in the scale and records the movement data of the measuring rod, accurately recording the position and height of the wall surface undulations. The device is easy to operate and... The device offers accurate dimensional detection. After multiple vertical measurements at equal intervals on a wall, it can output accurate coordinates showing the wall's unevenness, facilitating high-standard subsequent rectification and accelerating the overall project progress. A spherical level is mounted on the upper side of the base. With the threaded connection between the adjusting wheels and the legs, when the level indicates the base is not level, rotating the adjusting wheels drives the legs to slide up and down within the base, adjusting their height. This changes the height at which the legs support the base, allowing the base to be leveled by observing the level. The device is easy to operate and significantly increases its adaptability to various ground conditions, making it widely applicable. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0010] Figure 2 This utility model Figure 1 Enlarged view of region A in the middle;

[0011] Figure 3 This utility model Figure 1 Enlarged view of region B in the middle;

[0012] The markings in the diagram are as follows: 1. Base; 2. First guide rail; 3. First threaded post; 4. Slider; 5. Rocker wheel; 6. Second guide rail; 7. Second threaded post; 8. Motor; 9. Mounting block; 10. Measuring rod; 11. Traveling wheel; 12. Spring; 13. Scale; 14. Travel distance sensor; 15. Level; 16. Support leg; 17. Adjusting wheel. Detailed Implementation

[0013] To better understand the purpose, structure, and function of this utility model, a flatness detection device of this utility model will be described in further detail below with reference to the accompanying drawings.

[0014] like Figure 1-3As shown, this utility model discloses a flatness detection device, including a base 1; a first guide rail 2 is fixedly mounted on the upper side of the base 1; a first threaded post 3 is rotatably mounted inside the first guide rail 2; a slider 4 is slidably mounted on the first guide rail 2 and threadedly connected to the first threaded post 3; a rocker wheel 5 is mounted on one side of the first guide rail 2 extending from the first threaded post 3; a second guide rail 6 is vertically mounted on the slider 4; a second threaded post 7 is rotatably mounted inside the second guide rail 6; a motor 8 is mounted at the lower part of the second guide rail 6 to drive the second threaded post 7 to rotate; a mounting block 9 is slidably mounted on the second guide rail 6 and threadedly connected to the second threaded post 7; a measuring rod 10 is slidably mounted on the mounting block 9; a traveling wheel 11 is rotatably mounted on one side of the measuring rod 10; a spring 12 is mounted between the measuring rod 10 and the mounting block 9; a scale 13 is mounted on the measuring rod 10; and a travel distance sensor 14 is mounted on one side of the mounting block 9 outside the measuring rod 10.

[0015] Combination Figure 1-3 As shown, in use, the base 1 of this device is placed next to the wall to be tested for flatness. The rocker wheel 5 is rotated, causing the first threaded column 3 to drive the slider 4 to slide on the first track. Adjustment is made so that the upper traveling wheel 11 is in contact with the wall to be tested. Further adjustment of the rocker wheel 5 causes the wall to push the traveling wheel 11, causing the measuring rod 10 to slide on the mounting block 9. This allows the travel distance sensor 14 to detect that the measuring rod 10 is at the starting position of the scale 13. At this time, the motor 8 is started. The motor 8 drives the second threaded column 7 to drive the mounting block 9 to slide on the second guide rail 6. Simultaneously, the mounting block 9 moves... The walking wheel 11 moves along the wall surface. The unevenness of the wall surface causes the walking wheel 11 to undulate, while simultaneously causing the measuring rod 10 to slide on the mounting block 9. The change in the position of the scale 13 when the measuring rod 10 moves is detected by the travel distance sensor 14, and the movement data of the measuring rod 10 is recorded. The position of the wall undulation and its height on the wall are clearly recorded. The operation is convenient and the size detection is accurate. After multiple vertical measurements at equal distances on a wall, the wall undulation can be output as accurate coordinates, which facilitates subsequent high-standard rectification and increases the progress of the overall project.

[0016] A spherical level 15 is arranged on both sides of the base 1, and multiple support legs 16 are slidably arranged on the lower side of the base 1. An adjusting wheel 17 is rotatably arranged inside the base 1 outside the support legs 16. The adjusting wheel 17 is threadedly connected to the support legs 16. With the spherical level 15 arranged on the upper side of the base 1, and in conjunction with the threaded connection between the adjusting wheel 17 and the support legs 16, when the level 15 detects that the base 1 is not level, the multiple adjusting wheels 17 are rotated. Through the threaded connection between the adjusting wheel 17 and the support legs 16, the support legs 16 are driven to slide up and down inside the base 1 to adjust their height, thereby changing the height at which the support legs 16 support the base 1. By observing the level 15, the base 1 is adjusted to a level position. The operation is convenient and can significantly increase the adaptability of this device to the ground conditions of the application scenario, and has a wide range of applications.

[0017] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A flatness detection device characterized by comprising: The system includes a base (1); a first guide rail (2) is fixedly mounted on the upper side of the base (1); a first threaded post (3) is rotatably mounted inside the first guide rail (2); a slider (4) is slidably mounted on the first guide rail (2) and threadedly connected to the first threaded post (3); a rocker wheel (5) is mounted on one side of the first threaded post (3); a second guide rail (6) is vertically mounted on the slider (4); a second threaded post (7) is rotatably mounted inside the second guide rail (6); and a motor (8) is mounted at the lower part of the second guide rail (6). The second threaded column (7) is driven to rotate; a mounting block (9) is slidably provided on the second guide rail (6) and is threadedly connected to the second threaded column (7); a measuring rod (10) is slidably provided on the mounting block (9); a traveling wheel (11) is rotatably provided on one side of the measuring rod (10); a spring (12) is provided between the measuring rod (10) and the mounting block (9); a scale (13) is provided on the measuring rod (10); a travel distance sensor (14) is provided on one side of the mounting block (9) outside the measuring rod (10).

2. The flatness detection device according to claim 1, wherein Spherical levels (15) are arranged on both sides of the base (1).

3. The flatness detection device of claim 1, wherein Multiple support legs (16) are slidably provided on the lower side of the base (1); an adjusting wheel (17) is rotatably provided inside the base (1) on the outside of the support legs (16); the adjusting wheel (17) and the support legs (16) are connected by a thread.