Detection and labeling device for wall flatness

Abstract

The invention discloses a wall flatness detecting and marking device which comprises a moving vehicle horizontally arranged on the ground, and universal wheels are arranged at the four corners of the lower end face of the moving vehicle; the stand column is vertically arranged on the moving vehicle; the supporting frame is horizontally arranged on the stand column; the supporting plate is vertically arranged at the front end of the supporting frame; the detection mechanism is horizontally arranged on the supporting plate and used for abutting against the wall surface; and the labeling mechanism comprises a concave labeling device and a convex labeling device, and the concave labeling device and the convex labeling device are both arranged on the detection mechanism and are used for labeling on the wall surface. According to the device, the moving trolley capable of moving on the ground is arranged, in the moving process of the moving trolley, the telescopic detection mechanism detects the concave position and the convex position of the wall surface, and meanwhile, the marking mechanism is used for spraying marks of different colors on the concave position and the convex position in real time; the flatness information of the wall body can be conveniently and visually known and observed in the later period, and the later construction can be effectively guided on site.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and in particular to a device for detecting and marking the flatness of a wall. Background Art

[0002] Wall testing is a crucial step in construction project quality control, ensuring the safety, stability, and durability of wall structures while meeting design requirements and relevant standards. Wall flatness testing is a crucial component of structural quality acceptance and serves as a crucial basis for developing plastering plans and calculating plastering quantities.

[0003] Currently, conventional flatness testing involves using a ruler combined with the naked eye or a feeler gauge to measure the surface, with the results recorded in a quality information box. Some companies use 3D scanners or measurement robots to collect data, analyze it, and provide reports.

[0004] However, although the above method can obtain flatness information, there is no clear flatness information mark on the physical wall, which makes it difficult to intuitively display the wall flatness information to other people and difficult to provide effective guidance for on-site construction, and needs to be improved. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a wall flatness detection and marking device that can intuitively mark the concave and convex positions on the wall and achieve the effect of visualizing the flatness.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A device for detecting and marking the flatness of a wall, comprising: The mobile vehicle is horizontally arranged on the ground, and universal wheels are provided at the four corners of the lower end surface. A reference pointer is vertically provided at the lower end surface of the front end of the mobile vehicle, and the pointer indicates a reference line on the ground; A column, vertically arranged on the mobile vehicle; A support frame is horizontally arranged on the column; A support plate is vertically arranged at the front end of the support frame, and a laser plumb bob is provided on the mobile vehicle, and the upper and lower lasers of the laser plumb bob respectively illuminate the middle position of the support plate and the reference pointer; A detection mechanism is horizontally arranged on the support plate and is used to contact the wall; The marking mechanism comprises a recessed marker and a raised marker. Both the recessed marker and the raised marker are arranged on the detection mechanism and are used for marking on the wall.

[0007] In a preferred example, the present invention can be further configured as follows: the detection mechanism includes a detection tube, a detection plate, a reset mechanism, a detection head and a detection rod, the detection tube is horizontally arranged on the support plate, the detection plate is vertically arranged in the detection tube, and is horizontally slidably connected to the detection tube, the reset mechanism is used to control the horizontal sliding of the detection plate, the detection head is arranged at the front end of the detection tube, the detection rod is horizontally arranged on the detection plate, and passes through the detection head, and is used to resist the wall.

[0008] In a preferred example, the present invention can be further configured as follows: the reset mechanism includes a telescopic rod, a retaining ring and a spring, the telescopic rod is horizontally arranged on the back side of the detection plate and passes through the detection tube and the support plate, the retaining ring is arranged inside the detection tube, and the spring is sleeved on the outside of the telescopic rod and is located between the detection plate and the retaining ring.

[0009] In a preferred example, the present invention can be further configured as follows: a locking rod is vertically slidably connected to the support plate, and a locking hole for inserting the locking rod is provided on the telescopic rod.

[0010] In a preferred example, the present invention can be further configured as follows: the retaining ring is threadedly connected to the detection tube, a calibration pointer is provided on the telescopic rod, and a calibration mark for the calibration pointer to indicate is provided on the detection tube.

[0011] In a preferred example, the present invention can be further configured as follows: the depression marker includes a storage bag, a liquid spray tube, a feeding box and a liquid replenishing tube; the storage bag is arranged in the detection tube and is located between the detection head and the detection plate, and is provided for the detection plate to resist and squeeze; the liquid spray tube is connected to the storage bag and passes through the detection head; the liquid replenishing box is arranged on the detection tube; a one-way valve is provided on the liquid replenishing box; and the liquid replenishing tube connects the liquid replenishing box and the storage bag.

[0012] In a preferred example, the present invention can be further configured as follows: the raised marker includes a fixed frame, a storage box, a piston plate, a paint spray tube and a driving mechanism, the fixed frame is L-shaped and arranged on the lower end surface of the detection tube, the storage box is horizontally slidably connected to the detection tube, and the horizontal section of the fixed frame passes through the front end of the storage box, the piston plate is vertically arranged in the storage box and connected to the fixed frame, the paint spray tube is connected to the rear end of the storage box and passes through the detection head, and the driving mechanism is used to control the unidirectional horizontal sliding of the storage box.

[0013] In a preferred example, the present invention can be further configured as follows: the driving mechanism includes a rack, a gear, a one-way ratchet guide wheel, a pulley, a transmission belt, a fixed pulley and a pull rope, the rack is horizontally arranged at the front end of the storage box, the gear is rotatably arranged below the rack and meshes with the rack, the one-way ratchet guide wheel is arranged on the outer wall of the gear, and the outer ring is fixed to the gear, the pulley is rotatably arranged in front of the gear, the transmission belt is wrapped around the one-way ratchet guide wheel and the outer wall of the pulley, the fixed pulley is rotatably arranged in front of the pulley, one end of the pull rope is fixed to the outer edge position of the pulley, and the other end is fixed to the detection plate after crossing the fixed pulley.

[0014] In a preferred example, the present invention can be further configured as follows: the support frame is rotatably connected to the column, the upper end of the column is rotatably connected to a winch, an adjustment rope is wound around the winch, the end of the adjustment rope is fixed to the support frame, and the lower end surface of the support plate is provided with a spirit level and a leveling mark, and the leveling mark is illuminated by the laser plumb bob.

[0015] In a preferred example, the present invention can be further configured as follows: the column includes a bottom rod and a top rod, the top rod is vertically slidably connected to the bottom rod, a locking pin is horizontally passed through the upper end of the bottom rod, and a row of pin holes for the locking pin to be inserted is provided on the top rod.

[0016] In summary, the present invention has the following beneficial effects: 1. A mobile vehicle that can move on the ground is set up to make the detection mechanism contact the wall. During the movement of the mobile vehicle, the telescopic detection mechanism detects the concave and convex positions of the wall. During the detection process, the marking mechanism is used to spray different colors on the concave and convex positions, which facilitates the intuitive understanding and observation of the flatness information of the wall in the later stage, and facilitates effective guidance of the later construction on site; 2. By setting up a support frame with adjustable inclination, it can adapt to the ground with different slopes and meet the use of different construction sites; 3. By setting up telescopic columns, the flatness of the entire wall can be detected during the reciprocating motion of the mobile vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an embodiment; Figure 2 Schematic diagram of the connection relationship of the embodiment; Figure 3 1 is a schematic structural diagram of a detection mechanism of an embodiment; Figure 4 is a schematic structural diagram of a recessed mark in an embodiment; Figure 52 is a schematic structural diagram of a convex marker according to an embodiment of the present invention.

[0018] Reference numerals: 1, mobile vehicle; 11, universal wheel; 12, reference pointer; 13, laser plumb bob; 2, column; 21, winch; 22, adjustment rope; 23, bottom rod; 24, top rod; 25, locking pin; 26, pin hole; 3, support frame; 4, support plate; 41, spirit level; 42, leveling mark; 5, detection mechanism; 51, detection tube; 52, detection plate; 53, reset mechanism; 531, telescopic rod; 532, retaining ring; 533, spring; 534, locking rod; 535, lock hole; 536 6. Calibration pointer; 537. Calibration mark; 54. Detection head; 55. Detection rod; 6. Marking mechanism; 7. Concave marker; 71. Storage bag; 72. Spray tube; 73. Feed box; 74. Feed tube; 75. One-way valve; 8. Raised marker; 81. Fixed bracket; 82. Storage box; 83. Piston plate; 84. Paint spray tube; 9. Driving mechanism; 91. Rack; 92. Gear; 93. One-way ratchet guide wheel; 94. Pulley; 95. Transmission belt; 96. Fixed pulley; 97. Pull rope. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 、 Figure 2 As shown, a device for detecting and marking the flatness of a wall includes a mobile vehicle 1, a column 2, a support frame 3, a support plate 4, a detection mechanism 5 and a marking mechanism 6.

[0021] like Figure 1 、 Figure 2 As shown, the mobile vehicle 1 is horizontally arranged on the ground, and universal wheels 11 are provided at the four corners of the lower end surface. The universal wheels 11 are self-locking and can be fixed during the position adjustment of the mobile vehicle 1 to meet the precise adjustment of the initial position of the mobile vehicle 1.

[0022] like Figure 1 、 Figure 2 As shown, a reference pointer 12 is vertically provided at the lower end surface of the front end of the mobile vehicle 1. The pointer indicates the reference line on the ground, where the reference line on the ground is 50 cm away from the wall and will be marked in advance during construction. The position of the mobile vehicle 1 is just based on the reference line on the ground.

[0023] like Figure 1 、 Figure 2 As shown, the column 2 is vertically mounted on the mobile vehicle 1, the support frame 3 is horizontally mounted on the column 2, and the support plate 4 is vertically mounted at the front end of the support frame 3. A laser plumb bob 13 is mounted on the mobile vehicle 1, and the upper and lower laser beams of the laser plumb bob 13 illuminate the middle of the support plate 4 and the reference pointer 12, respectively.

[0024] like Figure 2 、 Figure 3 As shown, the detection mechanism 5 is horizontally arranged on the support plate 4 and is used to abut the wall. The marking mechanism 6 includes a recessed marker 7 and a raised marker 8, both of which are arranged on the detection mechanism 5 and are used to mark on the wall.

[0025] When the flatness of the wall needs to be tested, the mobile vehicle 1 is moved near the wall, and then the laser plumb bob 13 is turned on, so that the laser plumb bob 13 irradiates infrared rays on the ground, and the reference pointer 12 on the mobile vehicle 1 is aligned with the reference line on the ground to complete the fixing of the position of the mobile vehicle 1.

[0026] Then the mobile vehicle 1 is controlled to move horizontally on the ground, and the reference pointer 12 is always aligned with the reference line on the ground. At the same time, the flatness of the wall is detected by the detection mechanism 5. When a concave or convex position is detected, the concave marker 7 and the convex marker 8 on the marking mechanism 6 work and mark different colors on the wall.

[0027] By setting up a mobile vehicle 1 that can move on the ground, the detection mechanism 5 is made to contact the wall, and during the movement of the mobile vehicle 1, the detection mechanism 5 is used to detect the concave and convex positions of the wall. During the detection process, the marking mechanism 6 is immediately used to spray different colored marks on the concave and convex positions, which is convenient for intuitively understanding and observing the flatness information of the wall in the later stage, and is convenient for effective guidance of the later construction on site.

[0028] like Figure 2 、 Figure 3 As shown, the detection mechanism 5 includes a detection tube 51 , a detection plate 52 , a reset mechanism 53 , a detection head 54 and a detection rod 55 .

[0029] like Figure 2 、 Figure 3 As shown, the detection tube 51 is horizontally arranged on the support plate 4, and the detection plate 52 is vertically arranged in the detection tube 51 and horizontally slidably connected to the detection tube 51. The reset mechanism 53 is used to control the horizontal sliding of the detection plate 52.

[0030] like Figure 2 、 Figure 3 As shown, the reset mechanism 53 includes a telescopic rod 531, a retaining ring 532, and a spring 533. The telescopic rod 531 is horizontally arranged on the back side of the detection plate 52 and passes through the detection tube 51 and the support plate 4. A locking rod 534 is vertically slidably connected to the support plate 4, and the telescopic rod 531 is provided with a lock hole 535 for the locking rod 534 to be inserted.

[0031] like Figure 2 、 Figure 3As shown, a retaining ring 532 is disposed inside the detection tube 51, and a spring 533 is sleeved outside the telescopic rod 531 and located between the detection plate 52 and the retaining ring 532. The retaining ring 532 is threadedly connected to the detection tube 51. The telescopic rod 531 is provided with a calibration pointer 536, and the detection tube 51 is provided with a calibration mark 537 for the calibration pointer 536 to indicate.

[0032] like Figure 2 、 Figure 3 As shown, the detection head 54 is arranged at the front end of the detection tube 51, and the detection rod 55 is horizontally arranged on the detection plate 52, passes through the detection head 54, and is used to resist the wall.

[0033] When the detection mechanism 5 is working, first pull out the locking rod 534, then observe the calibration pointer 536 and the calibration mark 537, and adjust the tightness of the spring 533 by rotating the retaining ring 532, so as to realize the sliding control of the telescopic rod 531, and ensure that the calibration pointer 536 is aligned with the center of the calibration mark 537, so that the detection rod 55 can be fitted in front of the 50 cm distance from the ground, ensuring the accurate calibration of the detection mechanism 5.

[0034] When the wall is flat, the detection rod 55 always contacts the wall, and the detection rod 55 and detection plate 52 are in their initial positions. When the wall has a concave position, the spring 533 drives the detection plate 52 to slide forward, and the detection plate 52 drives the detection rod 55 forward synchronously. When the wall has a convex position, the wall presses the detection rod 55 backward, and the detection rod 55 drives the detection plate 52 to move synchronously, and presses the spring 533 to retract.

[0035] like Figure 3 、 Figure 4 As shown, the depression marker 7 includes a storage bag 71, a liquid spraying tube 72, a feeding box 73 and a liquid feeding tube 74.

[0036] like Figure 3 、 Figure 4 As shown, a storage bladder 71 is disposed within the detection tube 51, between the detection head 54 and the detection plate 52, and is provided for contact and compression by the detection plate 52. A liquid injection tube 72 connects to the storage bladder 71 and passes through the detection head 54. A liquid refilling tank is disposed on the detection tube 51 and is equipped with a one-way valve 75. A liquid refilling tube 74 connects the liquid refilling tank and the storage bladder 71.

[0037] When there is a depression on the wall, the detection plate 52 slides forward and presses the storage capsule 71, causing the liquid in the storage capsule 71 to be sprayed onto the wall along the paint spray tube 84, thus marking the wall. When the detection plate 52 returns to its original position, the pressure on the storage capsule 71 is released, and the storage capsule 71 automatically returns to its original position. The one-way valve 75 on the feeding box 73 allows air to enter the discharge box, and the liquid in the discharge box is replenished into the storage capsule 71 through the liquid replenishing tube 74, completing the automatic replenishment of the liquid and thus completing the marking operation.

[0038] like Figure 3 、 Figure 5 As shown, the protrusion marker 8 includes a fixing frame 81 , a storage box 82 , a piston plate 83 , a paint spraying tube 84 and a driving mechanism 9 .

[0039] like Figure 3 、 Figure 5 As shown, a mounting bracket 81 is L-shaped and mounted on the lower end of the detection tube 51. A storage box 82 is horizontally slidably connected to the detection tube 51, and the horizontal section of the mounting bracket 81 extends through the front end of the storage box 82. A piston plate 83 is vertically mounted within the storage box 82 and connected to the mounting bracket 81. A paint spray hose 84 is connected to the rear end of the storage box 82 and extends through the detection head 54.

[0040] like Figure 3 、 Figure 5 As shown, the driving mechanism 9 is used to control the unidirectional horizontal sliding of the storage box 82. The driving mechanism 9 includes a rack 91, a gear 92, a one-way ratchet guide wheel 93, a pulley 94, a transmission belt 95, a fixed pulley 96 and a pull rope 97.

[0041] like Figure 3 、 Figure 5 As shown, the rack 91 is horizontally arranged at the front end of the storage box 82, and the gear 92 is rotatably arranged below the rack 91 and meshed with the rack 91. The one-way ratchet guide wheel 93 is arranged on the outer wall of the gear 92, and the outer ring is fixed to the gear 92.

[0042] like Figure 3 、 Figure 5 As shown, a pulley 94 is rotatably disposed in front of the gear 92, and a transmission belt 95 is wound around a one-way ratchet guide wheel 93 and the outer wall of the pulley 94. A fixed pulley 96 is rotatably disposed in front of the pulley 94, and one end of a pull rope 97 is fixed to the outer edge of the pulley 94, and the other end passes over the fixed pulley 96 and is fixed to the detection plate 52.

[0043] When there is a raised position on the wall, the detection plate 52 slides backward and pulls the pull rope 97 to move synchronously. At this time, the pull rope 97 pulls the pulley 94 to rotate counterclockwise, and under the cooperation of the transmission belt 95, controls the one-way ratchet guide wheel 93 to rotate counterclockwise. At this time, the one-way ratchet guide wheel 93 can drive the gear 92 to rotate.

[0044] Then the gear 92 drives the rack 91 to slide forward, and the rack 91 pulls the storage box 82 to slide forward synchronously. At this time, the storage box 82 slides relative to the piston plate 83, and squeezes out the liquid in the storage box 82, and then sprays it onto the wall along the paint spray tube 84 to achieve marking.

[0045] When the detection plate 52 is reset, it slides forward. At this time, the pulley 94 rotates in the opposite direction under the action of the torsion spring on the pulley 94, and the pull rope 97 is automatically tightened. At the same time, the pulley 94 drives the transmission belt 95 to move synchronously. Since the one-way ratchet guide wheel 93 rotates in one direction, the transmission belt 95 will drive the one-way ratchet guide wheel 93 to rotate idly, which will not affect the movement of the storage box 82, so that the storage box 82 can continue to slide forward next time to squeeze out the liquid inside.

[0046] like Figure 1 、 Figure 2 As shown, the support frame 3 is rotatably connected to the column 2 , and the upper end of the column 2 is rotatably connected to a winch 21 , an adjusting rope 22 is wound around the winch 21 , and the end of the adjusting rope 22 is fixed to the support frame 3 .

[0047] like Figure 1 、 Figure 2 As shown, a level 41 and a leveling mark 42 are provided on the lower end surface of the support plate 4 , and the leveling mark 42 is illuminated by the laser plumb bob 13 .

[0048] When the ground is tilted, the laser plumb bob 13 can be first leveled so that it emits the laser vertically. The capstan 21 can then be controlled to rotate forward or backward, utilizing the gravity of the support frame 3 to automatically flip it. The level 41 and the point of illumination of the laser plumb bob 13 on the leveling mark 42 can be observed to determine the horizontality of the support frame 3, ensuring accurate and precise measurement of the wall surface.

[0049] like Figure 1 、 Figure 2 As shown, the column 2 includes a bottom rod 23 and a top rod 24. The top rod 24 is vertically slidably connected to the bottom rod 23. A locking pin 25 is horizontally passed through the upper end of the bottom rod 23. The top rod 24 is provided with a row of pin holes 26 for the locking pin 25 to be inserted.

[0050] Therefore, after the flatness test of each layer of the wall is completed, the entire column 2 can be controlled to extend and retract, and the flatness of the entire wall can be tested during the reciprocating motion of the mobile vehicle 1, meeting the requirements of full detection and marking of the entire wall.

[0051] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A device for detecting and marking the flatness of a wall, characterized by: include: The mobile vehicle (1) is horizontally arranged on the ground, and universal wheels (11) are arranged at the four corners of the lower end surface. A reference pointer (12) is vertically arranged at the lower end surface of the front end of the mobile vehicle (1), and the pointer indicates a reference line on the ground; A column (2) is vertically arranged on the mobile vehicle (1); A support frame (3) is horizontally arranged on the column (2); A support plate (4) is vertically arranged at the front end of the support frame (3); a laser plumb bob (13) is provided on the mobile vehicle (1); upper and lower lasers of the laser plumb bob (13) respectively illuminate the middle position of the support plate (4) and the reference pointer (12); A detection mechanism (5) is horizontally arranged on the support plate (4) and is used to contact the wall; The marking mechanism (6) comprises a recessed marker (7) and a raised marker (8), wherein the recessed marker (7) and the raised marker (8) are both arranged on the detection mechanism (5) and used for marking on the wall surface.

2. A wall surface flatness detection and marking device according to claim 1, characterized in that: The detection mechanism (5) comprises a detection tube (51), a detection plate (52), a reset mechanism (53), a detection head (54) and a detection rod (55); the detection tube (51) is horizontally arranged on the support plate (4); the detection plate (52) is vertically arranged in the detection tube (51) and horizontally slidably connected to the detection tube (51); the reset mechanism (53) is used to control the horizontal sliding of the detection plate (52); the detection head (54) is arranged at the front end of the detection tube (51); the detection rod (55) is horizontally arranged on the detection plate (52), passes through the detection head (54), and is used to contact the wall.

3. The wall surface flatness detection and marking device according to claim 2, characterized in that: The reset mechanism (53) comprises a telescopic rod (531), a retaining ring (532) and a spring (533); the telescopic rod (531) is horizontally arranged on the back side of the detection plate (52) and passes through the detection tube (51) and the support plate (4); the retaining ring (532) is arranged inside the detection tube (51); and the spring (533) is sleeved on the outside of the telescopic rod (531) and located between the detection plate (52) and the retaining ring (532).

4. The wall surface flatness detection and marking device according to claim 3, characterized in that: A locking rod (534) is vertically slidably connected to the support plate (4), and a locking hole (535) for inserting the locking rod (534) is provided on the telescopic rod (531).

5. The device for detecting and marking the flatness of a wall according to claim 4, characterized in that: The retaining ring (532) is threadedly connected to the detection tube (51); a calibration pointer (536) is provided on the telescopic rod (531); and a calibration mark (537) for the calibration pointer (536) to indicate is provided on the detection tube (51).

6. The device for detecting and marking the flatness of a wall according to claim 1, characterized in that: The depression marker (7) includes a storage bag (71), a liquid spraying tube (72), a feeding box (73) and a liquid replenishing tube (74). The storage bag (71) is arranged in the detection tube (51) and is located between the detection head (54) and the detection plate (52), and is provided for the detection plate (52) to resist and squeeze. The liquid spraying tube (72) is connected to the storage bag (71) and passes through the detection head (54). The liquid replenishing box is arranged on the detection tube (51). A one-way valve (75) is provided on the liquid replenishing box. The liquid replenishing tube (74) connects the liquid replenishing box and the storage bag (71).

7. The device for detecting and marking the flatness of a wall according to claim 1, characterized in that: The raised marker (8) comprises a fixed frame (81), a storage box (82), a piston plate (83), a paint spraying tube (84) and a driving mechanism (9), wherein the fixed frame (81) is arranged in an L-shape on the lower end surface of the detection tube (51), the storage box (82) is horizontally slidably connected to the detection tube (51), and the horizontal section of the fixed frame (81) passes through the front end of the storage box (82), the piston plate (83) is vertically arranged in the storage box (82) and connected to the fixed frame (81), the paint spraying tube (84) is connected to the rear end of the storage box (82) and passes through the detection head (54), and the driving mechanism (9) is used to control the unidirectional horizontal sliding of the storage box (82).

8. The device for detecting and marking the flatness of a wall according to claim 7, characterized in that: The driving mechanism (9) includes a rack (91), a gear (92), a one-way ratchet guide wheel (93), a pulley (94), a transmission belt (95), a fixed pulley (96) and a pull rope (97), wherein the rack (91) is horizontally arranged at the front end of the storage box (82), the gear (92) is rotatably arranged below the rack (91) and meshed with the rack (91), and the one-way ratchet guide wheel (93) is arranged on the outer wall of the gear (92), and The outer ring is fixed to the gear (92), the pulley (94) is rotatably arranged in front of the gear (92), the transmission belt (95) is wound around the one-way ratchet guide wheel (93) and the outer wall of the pulley (94), the fixed pulley (96) is rotatably arranged in front of the pulley (94), one end of the pull rope (97) is fixed to the outer edge position of the pulley (94), and the other end is fixed to the detection plate (52) after crossing the fixed pulley (96).

9. The device for detecting and marking the flatness of a wall according to claim 1, characterized in that: The support frame (3) is rotatably connected to the column (2); the upper end of the column (2) is rotatably connected to a winch (21); an adjustment rope (22) is wound around the winch (21); the end of the adjustment rope (22) is fixed to the support frame (3); a level (41) and a leveling mark (42) are provided on the lower end surface of the support plate (4); the leveling mark (42) is illuminated by the laser plumb bob (13).

10. The device for detecting and marking the flatness of a wall according to claim 1, characterized in that: The column (2) comprises a bottom rod (23) and a top rod (24), wherein the top rod (24) is vertically slidably connected to the bottom rod (23), a locking pin (25) is horizontally passed through the upper end of the bottom rod (23), and a row of pin holes (26) for the locking pin (25) to be inserted are provided on the top rod (24).

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