A wall flatness measuring instrument for building construction

Abstract

The present application relates to the technical field of building construction, and especially relates to a wall flatness measuring instrument for building construction. The technical problem of the present application is to provide a wall flatness measuring instrument for building construction which can facilitate measurement. The technical scheme is that the wall flatness measuring instrument for building construction comprises a detection plate, a first fixing rod, a direct-viewing mechanism and a covering mechanism, the left front part of the detection plate is connected with the first fixing rod, the direct-viewing mechanism is arranged on the detection plate, and the covering mechanism is arranged on the detection plate. By rotating the first threaded rod, the roller rolls downward on the wall surface, and when the wall surface is uneven, the pen draws a zigzag line on the paper, and when the wall surface is flat, the pen draws a straight line. By observing the change of the line, the flatness of the wall surface can be measured conveniently.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a wall flatness measuring instrument for building construction. Background Technology

[0002] During the construction process, it is necessary to measure the flatness of the wall surface. Currently, a relatively simple measuring instrument is generally used. It is attached to the wall surface, and then the flatness is judged by checking whether there is a gap between the measuring instrument and the wall surface.

[0003] Patent publication number CN218765077U discloses a wall flatness measuring ruler, including: a main measuring ruler and a secondary measuring ruler, the main measuring ruler and the secondary measuring ruler are connected to each other through a sliding guide structure, a rectangular recess is provided on the outer wall of one side of the main measuring ruler to fit into the secondary measuring ruler; a threaded locking member is installed at both ends of the surface of the secondary measuring ruler, the threaded locking member is used to lock the main measuring ruler and the secondary measuring ruler.

[0004] The measuring ruler is placed close to the measurement point on the wall. After the protruding part is attached to the wall, it will move backward. People can judge the flatness of the wall by observing the mapping point of the protruding part on the scale line. Although the above measuring ruler can quickly read the scale value, it requires people to observe with their naked eyes, which not only causes visual fatigue, but also makes the measurement inconvenient. Now, a wall flatness measuring instrument for building construction that can be easily measured is being developed. Summary of the Invention

[0005] In order to overcome the inconvenience of existing measuring rulers, the technical problem of the present invention is to provide a wall flatness measuring instrument for building construction that can be conveniently used for measurement.

[0006] The technical solution is: a wall flatness measuring instrument for building construction, including a detection plate, a first fixed rod, a visual sensing mechanism and a covering mechanism. The first fixed rod is connected to the front left part of the detection plate, the visual sensing mechanism is provided on the detection plate, and the covering mechanism is provided on the detection plate.

[0007] Furthermore, the intuitive mechanism includes a moving component, a second fixed rod, a drawing board, a first slide rail, a second slider, a first connecting rod, a paintbrush, a roller, and a tension spring. The second fixed rod is connected to the middle of the front right side of the detection board, the drawing board is connected to the right side of the second fixed rod, the first slide rail is connected to the right side of the detection board, the first slide rail is located on the right side of the drawing board, the moving component is mounted on the first slide rail, the second slider is connected to the moving component, the first connecting rod is slidably connected to the second slider, a tension spring is connected between the front of the first connecting rod and the second slider, a roller is rotatably connected to the rear of the first guide rod, and a paintbrush is engaged at the front of the first connecting rod.

[0008] Furthermore, the moving component includes a first slider, a first threaded rod, and a first guide rod. The first threaded rod is rotatably connected to the left side of the first slide rail, and the first guide rod is fixedly connected to the right side of the first slide rail. The first slider is slidably connected between the first guide rod and the first slide rail, and the first slider and the second slider are slidably connected.

[0009] Furthermore, the covering mechanism includes drawing paper, a first rotating rod, a transmission assembly, a first rotating shaft, a motor, a second rotating rod, and a third fixed rod. The first rotating rod is rotatably connected to the lower right front part of the detection plate, and the second rotating rod is rotatably connected to the upper right front part of the detection plate. Drawing paper is wound between the first rotating rod and the second rotating rod, and the drawing paper passes over the right side of the drawing plate. The third fixed rod is welded to the bottom of the first fixed rod, and the motor is connected to the third fixed rod by screws. The first rotating shaft is connected to the rear part of the motor's output shaft, and a transmission assembly is connected between the first rotating shaft and the rear part of the first rotating rod.

[0010] Furthermore, it also includes a removal mechanism, which comprises a first conical tooth, a second rotating shaft, a first fixed block, a second conical tooth, a third rotating shaft, a first fixing member, a full gear, a missing gear, a second threaded rod, a second fixed block, a first torsion spring, and a second fixing member. A first fixed block is welded to the upper right front part of the detection plate. A second rotating shaft is rotatably connected to the first fixed block. The rear part of the second rotating rod and the lower part of the second rotating shaft are both connected to the first conical tooth, which meshes with each other. A first fixing member is welded to the top center of the first slide rail. A third rotating shaft is rotatably connected to the first fixing member. The left part of the third rotating shaft and the upper part of the second rotating shaft are both connected to… It has a second conical tooth, and two second conical teeth mesh with each other. A full gear is connected to the right side of the third rotating shaft. A second fixing member is connected to the upper part of the first slider. The second fixing member and the second slider are slidably connected. A second threaded rod is rotatably connected to the lower part of the first slider. The second threaded rod and the second slider are threadedly connected. The right side of the second threaded rod extends out of the first slide rail. A second fixing block is connected to the right side of the first slider. The second fixing block and the first slide rail are slidably connected. The second fixing block and the second threaded rod are rotatably connected. A missing gear is connected to the right side of the second threaded rod. The missing gear meshes with the full gear. A first torsion spring is connected between the left side of the missing gear and the right side of the second fixing block.

[0011] Furthermore, it also includes a moving mechanism, which includes a third slider, a second slide rail, a third fixing member, a second connecting rod, a fourth slider, a bidirectional threaded rod, and a support base. The fourth slider is slidably connected to both sides of the support base, and the bidirectional threaded rod is rotatably connected inside the support base. The bidirectional threaded rod and the fourth slider are threadedly connected. The third fixing member is connected to both sides of the upper part of the first fixing rod. The third fixing member on the right and the fourth slider on the right are rotatably connected to the second connecting rod. The third fixing member on the left and the fourth slider on the left are also rotatably connected to the second connecting rod. The second slide rail is welded to the middle of the top of the support base. The third slider is slidably connected to the rear of the second slide rail, and the rear of the third slider is connected to the lower front part of the first fixing rod.

[0012] Furthermore, it also includes a stabilizing mechanism, which includes a fourth fixing member, a stabilizing member, a second torsion spring, a fourth rotating shaft, and a fifth fixing member. The right side of the third fixing rod is connected to the fourth fixing member, and the upper right side of the first fixing rod is connected to the fifth fixing member. The fourth fixing member and the fifth fixing member are both rotatably connected to the fourth rotating shaft, and the fourth rotating shaft is connected to the stabilizing member. The upper and lower sides of the stabilizing member are connected to the fifth fixing member with the second torsion spring, and the upper and lower sides of the stabilizing member are connected to the fourth fixing member with the second torsion spring.

[0013] Furthermore, it also includes an anti-slip mechanism, which includes a fourth threaded rod, an anti-slip rod, and a second guide rod. The second guide rod is welded to the right side of the second fixed rod, and the anti-slip rod is slidably connected to the second guide rod. The fourth threaded rod is threadedly connected to the second fixed rod, and the fourth threaded rod and the anti-slip rod are rotatably connected.

[0014] The beneficial effects are as follows: 1. By rotating the first threaded rod, the roller rolls downward on the wall. If the wall is uneven, the paintbrush will draw zigzag lines on the drawing paper. If the wall is flat, the paintbrush will draw straight lines. By observing the changes in the lines, it is convenient to measure the flatness of the wall.

[0015] 2. This invention controls the motor so that the first rotating rod can rewind the drawing paper, thus automatically updating the drawing paper and facilitating subsequent measurements.

[0016] 3. In this invention, when the drawing paper is being updated, the first rotating rod and the second rotating rod work together with the first conical tooth and the second conical tooth to make the brush automatically move to the right and separate from the drawing paper. This makes it easier to update the drawing paper.

[0017] 4. This invention uses a rotating bidirectional threaded rod in conjunction with a second connecting rod to move the detection plate up and down, adjusting the height of the detection plate for better measurement of the flatness of the wall surface.

[0018] 5. The present invention can block the front of the drawing paper with the stabilizing component, which can prevent the drawing paper from falling forward and affecting the measurement. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the intuitive mechanism of the present invention.

[0021] Figure 3 This is a cross-sectional three-dimensional structural diagram of the intuitive mechanism of the present invention.

[0022] Figure 4 This is a partial three-dimensional structural diagram of the intuitive mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the first three-dimensional structure of the covering mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of a second three-dimensional structure of the covering mechanism of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the removing mechanism of the present invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the first part of the removal mechanism of the present invention.

[0027] Figure 9 This is a three-dimensional structural diagram of the second part of the removal mechanism of the present invention.

[0028] Figure 10 This is a schematic diagram of the first three-dimensional structure of the moving mechanism of the present invention.

[0029] Figure 11 This is a schematic diagram of a second three-dimensional structure of the moving mechanism of the present invention.

[0030] Figure 12 This is a three-dimensional structural diagram of the stabilizing mechanism of the present invention.

[0031] Figure 13 This is a three-dimensional structural diagram of the anti-slip mechanism of the present invention.

[0032] Figure 14 This is a partial three-dimensional structural diagram of the anti-slip mechanism of the present invention.

[0033] Explanation of reference numerals in the attached drawings: 1. Detection plate; 2. First fixed rod; 3. Visual sensing mechanism; 31. Second fixed rod; 32. Drawing board; 33. First slide rail; 34. First slider; 35. Second slider; 36. First connecting rod; 37. Pen; 38. First threaded rod; 39. Roller; 310. Tension spring; 311. First guide rod; 4. Covering mechanism; 41. Drawing paper; 42. First rotating rod; 43. Transmission assembly; 44. First rotating shaft; 45. Motor; 46. Second rotating rod; 47. Third fixed rod; 5. Removal mechanism; 51. First conical tooth; 52. Second rotating shaft; 53. First fixed block; 54. Second conical tooth. 55. Third rotating shaft, 56. First fixing member, 57. Full gear, 58. Missing gear, 59. Second threaded rod, 510. Second fixing block, 511. First torsion spring, 512. Second fixing member, 6. Moving mechanism, 61. Third slider, 62. Second slide rail, 63. Third fixing member, 64. Second connecting rod, 65. Fourth slider, 66. Bidirectional threaded rod, 67. Support seat, 7. Stabilizing mechanism, 71. Fourth fixing member, 72. Stabilizing member, 73. Second torsion spring, 74. Fourth rotating shaft, 75. Fifth fixing member, 8. Anti-slip mechanism, 81. Fourth threaded rod, 82. Anti-slip rod, 83. Second guide rod. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0035] A wall flatness measuring instrument for building construction, such as Figure 1 As shown, it includes a detection plate 1, a first fixing rod 2, a visual mechanism 3, and a covering mechanism 4. The first fixing rod 2 is connected to the front left part of the detection plate 1. The visual mechanism 3 and the covering mechanism 4 are provided on the detection plate 1. By attaching the visual mechanism 3 to the wall, the visual mechanism 3 can engrave the flat lines of the wall on the covering mechanism 4, thereby measuring the flatness of the wall.

[0036] like Figures 1-4As shown, the intuitive mechanism 3 includes a moving component, a second fixed rod 31, a drawing board 32, a first slide rail 33, a second slider 35, a first connecting rod 36, a pen 37, a roller 39, and a tension spring 310. The second fixed rod 31 is connected to the middle of the front right side of the detection plate 1. The drawing board 32 is connected to the right side of the second fixed rod 31. The first slide rail 33 is connected to the right side of the detection plate 1 and is located on the right side of the drawing board 32. A moving component is mounted on the first slide rail 33, and a second slider 35 is connected to the moving component. The first connecting rod 36 is slidably connected to the second slider 35. A tension spring 310 is connected between the front of the first connecting rod 36 and the second slider 35. A roller 39 is rotatably connected to the rear of the first guide rod 311. A pen 37 is attached to the front of the first connecting rod 36, and the roller 39 is attached to the wall. The roller 39 is moved down by the moving component. When the roller 39 rolls on the wall, the first connecting rod 36 and the pen 37 move back and forth. The pen 37 moves up and down and back and forth to draw lines on the drawing board 32. The moving component includes a first slider 34, a first threaded rod 38 and a first guide rod 311. The first threaded rod 38 is rotatably connected to the left side of the first slide rail 33. The first guide rod 311 is fixedly connected to the right side of the first slide rail 33. The first slider 34 is slidably connected between the first guide rod 311 and the first slide rail 33. The first slider 34 and the second slider 35 are slidably connected. The first slider 34 can be moved down by rotating the first threaded rod 38.

[0037] like Figure 1 , Figure 5 and Figure 6 As shown, the covering mechanism 4 includes drawing paper 41, a first rotating rod 42, a transmission assembly 43, a first rotating shaft 44, a motor 45, a second rotating rod 46, and a third fixed rod 47. The first rotating rod 42 is rotatably connected to the lower right front part of the detection plate 1, and the second rotating rod 46 is rotatably connected to the upper right front part of the detection plate 1. Drawing paper 41 is wound between the first rotating rod 42 and the second rotating rod 46, and the drawing paper 41 passes over the right side of the drawing plate 32. The third fixed rod 47 is welded to the bottom of the first fixed rod 2. The motor 45 is connected to the third fixed rod 47 by screws. The first rotating shaft 44 is connected to the rear part of the output shaft of the motor 45. The transmission assembly 43 is connected between the first rotating shaft 44 and the rear part of the first rotating rod 42. The output shaft of the motor 45 drives the first rotating shaft 44 to rotate, thereby causing the first rotating rod 42 to rotate and roll up the drawing paper 41, thus updating the drawing paper 41.

[0038] When it is necessary to measure the flatness of a wall surface, this wall flatness measuring instrument for construction can be used. Hold the first fixed rod 2, then position the rear of the detection plate 1 towards the wall surface, ensuring the roller 39 is in contact with the wall. Moving the roller 39 forward will cause the first connecting rod 36 and the pen 37 to move forward, while the tension spring 310 remains stretched. Then, the first threaded rod 38 can be rotated. Rotation of the first threaded rod 38 causes the first slider 34 to move downwards. The downward movement of the first slider 34 causes the second slider 35, the first guide rod 311, the roller 39, and the pen 37 to move downwards. Moving the pen 37 downwards will draw a line downwards on the right side of the drawing paper 41. When the roller 39 rolls downwards on the wall, if the wall protrudes forward, the roller 39 will cause the first guide rod 311 and the pen 37 to move forward, stretching the tension spring 310. If the wall is concave backwards, the tension spring 310 will cause the first guide rod 311, the pen 37, and the roller 39 to move backwards and reset. In this way, the pen 37 will draw front and back lines on the drawing paper 41. Thus, by drawing lines on the drawing paper 41 with the pen 37, if the lines are vertical straight lines, then the wall... The flatness is relatively high. If the lines are vertically curved, the flatness of the wall surface will be relatively low. The flatness of the wall surface can be measured by observing the lines. When the pen 37 moves down to the bottom, the second slider 35 can be moved to the right. The second slider 35 drives the first guide rod 311, the roller 39, and the pen 37 to move to the right, thus separating the pen 37 from the drawing paper 41. Then, the first threaded rod 38 can be reversed, causing the first slider 34, the second slider 35, the first guide rod 311, the roller 39, and the pen 37 to move upward and reset. Then the drawing paper 41 can be updated. Start the motor 45. The output shaft of the motor 45 rotates, which drives the first rotating shaft 44 to rotate. The rotation of the first rotating shaft 44 drives the first rotating rod 42 to rotate clockwise through the transmission component 43. The clockwise rotation of the first rotating rod 42 will roll up the drawing paper 41. In this way, the drawing paper 41 will be rolled up. The upper second rotating rod 46 will release the drawing paper 41 clockwise. After the drawing paper 41 is replaced, the motor 45 can be turned off. Then, the second slider 35, the first guide rod 311, the roller 39 and the pen 37 are moved to the left to reset. This makes it convenient to measure the flatness of the wall surface next time. Example 2

[0039] Based on Example 1, such as Figure 1 , Figure 7 , Figure 8 and Figure 9As shown, it also includes a retraction mechanism 5 that can automatically move the brush 37 to the right when updating the drawing paper 41. The retraction mechanism 5 includes a first conical tooth 51, a second rotating shaft 52, a first fixing block 53, a second conical tooth 54, a third rotating shaft 55, a first fixing member 56, a full gear 57, a missing gear 58, a second threaded rod 59, a second fixing block 510, a first torsion spring 511, and a second fixing member 512. The first fixing block 53 is welded to the upper right front part of the detection plate 1. A second rotating shaft 52 is rotatably connected to the first fixed block 53. First conical teeth 51 are connected to the rear of the second rotating rod 46 and the lower part of the second rotating shaft 52, and the two first conical teeth 51 mesh with each other. A first fixing member 56 is welded to the top center of the first slide rail 33. A third rotating shaft 55 is rotatably connected to the first fixing member 56. Second conical teeth 54 are connected to the left part of the third rotating shaft 55 and the upper part of the second rotating shaft 52, and the two second conical teeth 54 mesh with each other. A full gear 57 is connected to the right side. A second fixing member 512 is connected to the upper part of the first slider 34. The second fixing member 512 and the second slider 35 are slidably connected. A second threaded rod 59 is rotatably connected to the lower part of the first slider 34. The second threaded rod 59 and the second slider 35 are threadedly connected. The right part of the second threaded rod 59 extends out of the first slide rail 33. A second fixing block 510 is connected to the right side of the first slider 34. The second fixing block 510 and the first slide rail 33 are slidably connected. The second fixing block 510 and the second threaded rod 59 are rotatably connected. A missing gear 58 is connected to the right side of the second threaded rod 59. The missing gear 58 meshes with the full gear 57. A first torsion spring 511 is connected between the left part of the missing gear 58 and the right side of the second fixing block 510. The rotation of the second rotating rod 46, through the engagement of the first conical tooth 51, the second conical tooth 54, etc., causes the full gear 57 to drive the missing gear 58 to rotate, causing the second threaded rod 59 to drive the second slider 35 and the pen 37 to move to the right.

[0040] When the first rotating rod 42 rotates clockwise to roll up the drawing paper 41, and the second rotating rod 46 rotates clockwise to loosen the drawing paper 41, the second rotating rod 46 drives the second rotating shaft 52 to rotate via the first conical tooth 51. The second rotating shaft 52 drives the third rotating shaft 55 to rotate via the second conical tooth 54. The third rotating shaft 55 drives the full gear 57 to rotate. The rotation of the full gear 57 drives the missing gear 58 to rotate. The rotation of the missing gear 58 drives the second threaded rod 59 to rotate, and the first torsion spring 511 is twisted. In this way, the second threaded rod 59 drives the second slider 35 to move to the right, thereby causing the paintbrush to move. The pen 37 automatically separates from the drawing paper 41. In this way, while updating the drawing paper 41, the pen 37 can automatically move to the right and away from the drawing paper 41. This eliminates the need for manual adjustment of the pen 37 to the right, making it easier to update the drawing paper 41. When the missing gear 58 and the full gear 57 are not meshing, the second threaded rod 59 is reversed and reset under the action of the first torsion spring 511. This causes the second slider 35 to move the pen 37 to the left and reset to fit with the drawing paper 41. At this time, the first rotating rod 42 and the second rotating rod 46 also stop rotating, and the drawing paper 41 has been updated.

[0041] like Figure 1 , Figure 10 and Figure 11 As shown, it also includes a moving mechanism 6 for adjusting the height of the detection plate 1. The moving mechanism 6 includes a third slider 61, a second slide rail 62, a third fixing member 63, a second connecting rod 64, a fourth slider 65, a bidirectional threaded rod 66, and a support base 67. The fourth slider 65 is slidably connected to both sides of the support base 67. The bidirectional threaded rod 66 is rotatably connected inside the support base 67. The bidirectional threaded rod 66 and the fourth slider 65 are threadedly connected. The third fixing member 63 is connected to both sides of the upper part of the first fixing rod 2. The third fixing member 63 is connected to the right side of the first fixing rod 2. A second connecting rod 64 is rotatably connected between the third fixing member 63 on the left and the fourth slider 65 on the right. A second connecting rod 64 is also rotatably connected between the third fixing member 63 on the left and the fourth slider 65 on the left. A second slide rail 62 is welded to the middle of the top of the support base 67. A third slider 61 is slidably connected to the rear of the second slide rail 62. The rear of the third slider 61 is connected to the lower front of the first fixing rod 2. By rotating the bidirectional threaded rod 66, the fourth slider 65 moves, which, in conjunction with the second connecting rod 64, drives the first fixing rod 2 and the detection plate 1 to move up and down to adjust the height.

[0042] According to the measurement requirements, the height of the detection plate 1 can be adjusted. By rotating the bidirectional threaded rod 66, the fourth slider 65 slides on the support base 67, thereby causing the second connecting rod 64 to drive the first fixed rod 2 and the detection plate 1 to move up and down. This can automatically adjust the height of the detection plate 1, making it more convenient to measure the flatness of the wall.

[0043] like Figure 1 and Figure 12As shown, it also includes a stabilizing mechanism 7 that can stabilize the drawing paper 41. The stabilizing mechanism 7 includes a fourth fixing member 71, a stabilizing member 72, a second torsion spring 73, a fourth rotating shaft 74, and a fifth fixing member 75. The right side of the third fixing rod 47 is connected to the fourth fixing member 71, and the upper right side of the first fixing rod 2 is connected to the fifth fixing member 75. The fourth fixing member 71 and the fifth fixing member 75 are both rotatably connected to the fourth rotating shaft 74. The fourth rotating shaft 74 is connected to the stabilizing member 72 for stabilizing the front of the drawing paper 41. The upper and lower sides of the stabilizing member 72 are connected to the fifth fixing member 75, and the lower and lower sides of the stabilizing member 72 are connected to the fourth fixing member 71.

[0044] Under the action of the second torsion spring 73, the stabilizing member 72 can block the front of the drawing paper 41. In this way, during the replacement of the drawing paper 41, the stabilizing member 72 can prevent the drawing paper 41 from moving forward and falling off, thereby affecting the measurement results. When the drawing paper 41 needs to be replaced, the stabilizing member 72 can be swung forward to separate from the drawing paper 41, the second torsion spring 73 is twisted, and then it is convenient to replace the drawing paper 41. After replacement, the stabilizing member 72 is released, and under the action of the second torsion spring 73, the stabilizing member 72 is driven to swing backward to reset and stabilize the drawing paper 41.

[0045] like Figure 1 , Figure 13 and Figure 14 As shown, it also includes an anti-slip mechanism 8 for preventing the drawing paper 41 from slipping. The anti-slip mechanism 8 includes a fourth threaded rod 81, an anti-slip rod 82, and a second guide rod 83. The second guide rod 83 is welded to the right side of the second fixed rod 31. The anti-slip rod 82, which can limit the drawing paper 41, is slidably connected to the second guide rod 83. The fourth threaded rod 81 is threadedly connected to the second fixed rod 31. The fourth threaded rod 81 and the anti-slip rod 82 are rotatably connected.

[0046] After the drawing paper 41 is replaced, the fourth threaded rod 81 can be rotated to move the anti-slip rod 82 to the left to limit the right side of the drawing paper 41. This way, when the pen 37 draws lines on the drawing paper 41, the drawing paper 41 can be prevented from wrinkling, which would affect the detection. If the drawing paper 41 needs to be replaced again, the fourth threaded rod 81 can be reversed to move the anti-slip rod 82 to the right to release the drawing paper 41.

[0047] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A wall flatness measuring instrument for construction, comprising a detection plate (1) and a first fixed rod (2), the left front part of the detection plate (1) is connected with the first fixed rod (2), characterized in that, It also includes an intuitive mechanism (3) and a covering mechanism (4). The intuitive mechanism (3) is provided on the detection plate (1), and the covering mechanism (4) is provided on the detection plate (1). The intuitive mechanism (3) includes a moving component, a second fixed rod (31), a drawing board (32), a first slide rail (33), a second slider (35), a first connecting rod (36), a pen (37), a roller (39), and a tension spring (310). The second fixed rod (31) is connected to the middle of the front right side of the detection plate (1). The drawing board (32) is connected to the right side of the second fixed rod (31). The first slide rail (33) is connected to the right side of the detection plate (1). The first slide rail (33) is located on the right side of the drawing board (32). The moving component is provided on the first slide rail (33). The second slider (35) is connected to the moving component. The first connecting rod (36) is slidably connected to the second slider (35). The tension spring (310) is connected between the front of the first connecting rod (36) and the second slider (35). The roller (39) is rotatably connected to the rear of the first guide rod (311). The pen (37) is snapped into the front of the first connecting rod (36). The moving component includes a first slider (34), a first threaded rod (38), and a first guide rod (311). The first threaded rod (38) is rotatably connected to the left side of the first slide rail (33), and the first guide rod (311) is fixedly connected to the right side of the first slide rail (33). The first slider (34) is slidably connected between the first guide rod (311) and the first slide rail (33), and the first slider (34) and the second slider (35) are slidably connected. The covering mechanism (4) includes drawing paper (41), a first rotating rod (42), a transmission assembly (43), a first rotating shaft (44), a motor (45), a second rotating rod (46), and a third fixed rod (47). The first rotating rod (42) is rotatably connected to the lower right front part of the detection plate (1), and the second rotating rod (46) is rotatably connected to the upper right front part of the detection plate (1). The drawing paper (41) is wound between the first rotating rod (42) and the second rotating rod (46). The drawing paper (41) passes over the right side of the drawing plate (32). The third fixed rod (47) is welded to the bottom of the first fixed rod (2). The motor (45) is connected to the third fixed rod (47) by screws. The first rotating shaft (44) is connected to the rear of the output shaft of the motor (45). The transmission assembly (43) is connected between the rear of the first rotating shaft (44) and the first rotating rod (42). It also includes a removal mechanism (5), which includes a first conical tooth (51), a second rotating shaft (52), a first fixing block (53), a second conical tooth (54), a third rotating shaft (55), a first fixing member (56), a full gear (57), a missing gear (58), a second threaded rod (59), a second fixing block (510), a first torsion spring (511), and a second fixing member (512). The upper right front part of the detection plate (1) is welded with a first fixing block (53), and the second rotating shaft (52) is rotatably connected to the first fixing block (53). The rear part of the second rotating rod (46) and the lower part of the second rotating shaft (52) are both connected with the first conical tooth (51), and the two first conical teeth (51) mesh with each other. The top middle of the first slide rail (33) is welded with a first fixing member (56), and the third rotating shaft (55) is rotatably connected to the first fixing member (56). The left part of the third rotating shaft (55) and the upper part of the second rotating shaft (52) are both connected with the second conical tooth. Two conical teeth (54) mesh with each other. A full gear (57) is connected to the right side of the third rotating shaft (55). A second fixing member (512) is connected to the upper part of the first slider (34). The second fixing member (512) and the second slider (35) are slidably connected. A second threaded rod (59) is rotatably connected to the lower part of the first slider (34). The second threaded rod (59) and the second slider (35) are threadedly connected. The right side of the second threaded rod (59) passes through the first... A slide rail (33) is connected to a second fixed block (510) on the right side of a first slider (34). The second fixed block (510) and the first slide rail (33) are slidably connected. The second fixed block (510) and the second threaded rod (59) are rotatably connected. The right side of the second threaded rod (59) is connected to a missing gear (58). The missing gear (58) and the full gear (57) mesh. The left side of the missing gear (58) and the right side of the second fixed block (510) are connected to a first torsion spring (511).

2. The wall flatness measuring instrument for construction according to claim 1, wherein It also includes a moving mechanism (6), which includes a third slider (61), a second slide rail (62), a third fixing member (63), a second connecting rod (64), a fourth slider (65), a bidirectional threaded rod (66), and a support base (67). The fourth slider (65) is slidably connected to both sides of the support base (67), and the bidirectional threaded rod (66) is rotatably connected inside the support base (67). The bidirectional threaded rod (66) and the fourth slider (65) are threadedly connected. The upper left of the first fixing rod (2) Both sides of the right side are connected to a third fixing member (63). The third fixing member (63) on the right side and the fourth slider (65) on the right side are rotatably connected to a second connecting rod (64). The third fixing member (63) on the left side and the fourth slider (65) on the left side are also rotatably connected to a second connecting rod (64). The top center of the support base (67) is welded with a second slide rail (62). The rear of the second slide rail (62) is slidably connected to a third slider (61). The rear of the third slider (61) is connected to the lower front of the first fixing rod (2).

3. The wall flatness measuring instrument for building construction according to claim 2, characterized in that, It also includes a stabilizing mechanism (7), which includes a fourth fixing member (71), a stabilizing member (72), a second torsion spring (73), a fourth rotating shaft (74), and a fifth fixing member (75). The third fixing rod (47) is connected to the fourth fixing member (71) on the right side, and the first fixing rod (2) is connected to the fifth fixing member (75) on the upper right side. The fourth fixing member (71) and the fifth fixing member (75) are both rotatably connected to the fourth rotating shaft (74), and the fourth rotating shaft (74) is connected to the stabilizing member (72). The upper stabilizing member (72) and the fifth fixing member (75) are both connected to the second torsion spring (73), and the lower stabilizing member (72) and the fourth fixing member (71) are both connected to the second torsion spring (73).

4. A wall surface flatness measuring instrument for building construction according to claim 3, characterized in that, It also includes an anti-slip mechanism (8), which includes a fourth threaded rod (81), an anti-slip rod (82), and a second guide rod (83). The second guide rod (83) is welded to the right side of the second fixed rod (31). The anti-slip rod (82) is slidably connected to the second guide rod (83). The fourth threaded rod (81) is threadedly connected to the second fixed rod (31). The fourth threaded rod (81) and the anti-slip rod (82) are rotatably connected.

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