A high-precision flatness testing device for building engineering

Abstract

The invention provides a high-precision flatness detection device for construction engineering, which relates to the technical field of flatness detection, and comprises a main frame; the main frame is composed of a base frame and a vertical plate, the top surface of the base frame is equipped with a fixed slideway part and a motor, and the bottom surface of the base frame is equipped with a detection member; the top end of the driving shaft of the motor is fixedly connected with a fixed seat; the internal sliding connection of the fixed seat is connected to a rotating rod, and when the motor is started and rotated by a control module, the rotating rod is driven to rotate by the driving shaft of the motor, and then the sliding member is driven to slide on the slide rail, and the motor is reversed after touching a switch, and the sliding member slides in the opposite direction and touches the switch on the other side, so that the motor is reversed again, and the sliding member is reciprocated in this way, so as to realize the reciprocating sliding of the sliding member, thereby realizing multiple measurements, improving the accuracy of the flatness detection result, and solving the problem that it is difficult for traditional detection equipment to measure a specific error value of the detected plane, and that manual measurement contains errors during measurement, and it is difficult to ensure the detection accuracy.

Description

Technical Field

[0001] This invention relates to the field of flatness testing technology, and in particular to a high-precision flatness testing device for building engineering. Background Technology

[0002] During the construction of a building, it is necessary to ensure the verticality and flatness of the building, to ensure the construction standards of the building, and to prevent collapse. When testing the flatness of surfaces such as walls or floors, it is necessary to use testing equipment such as straightedges.

[0003] However, current traditional flatness testing equipment uses a traditional straightedge for inspection. However, straightedge inspection is difficult to measure the specific error value of the inspected plane, and the measurement relies on manual measurement, which is subject to error and makes it difficult to guarantee the accuracy of the inspection. Traditional flatness testing equipment is not suitable for repeated measurement of the same plane or inspection position to reduce error and improve accuracy. It is also difficult to inspect right angles of the wall at the same time to improve work efficiency. There is also the problem that it is difficult to inspect the ground and the wall at the same time to improve work efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a high-precision flatness testing device for building engineering, which has a testing component and can detect the flatness error value of the same plane, thereby achieving high-precision testing requirements.

[0005] This invention provides a high-precision flatness testing device for building engineering, specifically comprising a main frame and a sliding component. The main frame consists of a base frame and an upright plate, which are perpendicularly connected to each other. The rear end face of the upright plate is equipped with casters. A fixed slide rail and a motor are mounted on the top surface of the base frame, and a testing component is mounted on the bottom surface of the base frame. A fixed base is fixedly connected to the top of the motor's drive shaft. A rotating rod is slidably connected inside the fixed base. The end of the rotating rod is fixedly connected to the top surface of the sliding component. A connecting part is mounted on the top surface of the sliding component. Testing devices are respectively mounted on the left end face and the top surface of the connecting part. The connecting part is electrically coupled to the motor, the fixed slide rail, the testing device, and the testing component.

[0006] Optionally, the fixed slide section includes a slide rail, which is fixedly connected to the top surface of the base frame. The slide rail is provided with a protrusion, a retaining strip, and a slide groove. The protrusion is fixedly welded to the right side of the slide rail, the retaining strip is fixedly welded to the right side of the slide rail and above the protrusion, and the slide groove is located inside the left side of the slide rail.

[0007] Optionally, the fixed slide section further includes side plates, which are fixedly installed at the front and rear ends of the slide rail, and a switch is installed at one end of the opposite face of the two sets of side plates, with the switch circuit connected to the motor.

[0008] The sliding component is equipped with a top slider, a side locking block, a rotating shaft, and a connecting plate. The top slider is slidably engaged with the top surface of the slide rail, and the right end of the top slider is engaged with the left side of the locking strip. The side locking block is slidably engaged with the outside of the protrusion, and the top surface of the side locking block is engaged with the bottom surface of the locking strip. The rotating shaft is fixedly connected to the top surface of the sliding component, and a ring is provided at the bottom of the outer periphery of the rotating shaft. The connecting plate is engaged inside the ring, and the connecting plate has an annular groove inside.

[0009] Optionally, the rotating assembly includes a rotating rod and a fixed seat. A retaining ring is provided at the front of the rotating rod, which is movably engaged between the connecting disc and the bottom ring of the rotating shaft. The rotating rod is slidably engaged inside the fixed seat.

[0010] Optionally, the connecting part includes a connecting base plate, a control module, and a pressure plate. The control module is snapped onto the top surface of the connecting base plate. The control module contains a PLC controller and a CPU chip, and the control module is wirelessly connected to an external remote controller. The pressure plate is snapped onto the top surface of the control module. A rod is provided at the bottom of the pressure plate, and a connecting block is provided at the bottom end of the rod. The connecting block is fixedly connected to the top surface of the connecting base plate by a bolt assembly. The detection device is fixedly connected to the top surface and the left side of the control module, respectively.

[0011] Optionally, the detection device includes a base, a connecting plate, a pressure detection head, a spring detection head, and a fixed detection head. The base is fixedly connected to the top and left side of the control module. The connecting plate is fixedly connected to the end of the base. Four sets of pressure detection heads, two sets of spring detection heads, and one set of fixed detection heads are fixedly installed on the connecting plate. The pressure detection head is equipped with a built-in spring and the detection head has a hemispherical structure. The spring detection head has a spring on the bottom periphery. The fixed detection head, spring detection head, and pressure detection head are respectively connected to the control module.

[0012] Optionally, the detection component consists of a sliding frame, a fixed frame, a fixed clamping plate, and a detection box. The sliding frame is equipped with a sliding plate, a sliding clamping plate, and sliding rods. The sliding plate is slidably engaged with the inside of the fixed clamping plate, the fixed clamping plate is fixedly connected to the bottom surface of the base frame, and the sliding clamping plate is slidably engaged with the inside of the fixed frame. There are two sets of sliding rods. The front set of sliding rods is fixedly connected to the inside of the sliding frame and slidably engaged with the bottom surface of the base frame, and the rear set of sliding rods is slidably engaged with the inside of the sliding frame and fixedly connected to the bottom surface of the base frame. The detection box is installed on the bottom surfaces of the sliding frame and the fixed frame, and the detection probe of the detection box is connected to the control module.

[0013] Beneficial effects

[0014] According to various embodiments of the present invention, compared with conventional detection devices, when the spring detection head contacts the detection plane and undergoes displacement, and when the detection heads of the pressing detection head, the spring detection head, and the fixed detection head are simultaneously located on the same plane, and the displacement changes of the spring detection head and the pressing detection head are inconsistent, the CPU chip calculates the displacement and displays it on the remote control screen through the control module, thereby determining whether the flatness of the detection plane meets the requirements. At the same time, the maximum error value at different positions can be calculated to achieve high-precision flatness detection requirements. Furthermore, the two sets of detection devices can simultaneously detect the wall and the ceiling, improving detection efficiency.

[0015] Once the motor is started and rotated by the control module, the drive shaft of the motor drives the rotating rod to rotate, which in turn drives the slider to slide on the slide rail. When it touches the switch, the motor reverses. The slider slides in the opposite direction and touches the switch on the other side, causing the motor to reverse again. This process is repeated to achieve the reciprocating sliding of the slider, thereby enabling multiple measurements and improving the accuracy of the flatness detection results.

[0016] After rotating the main frame 90 degrees so that the upright plate faces the ground, the flatness of the wall can be detected using the detection box. Two sets of detection devices can be used to simultaneously detect the flatness of two sets of walls at the right angle, improving detection efficiency. When the upright plate faces the ground, the casters are in contact with the ground, making it easy to move the equipment.

[0017] When the detection box detects the flatness of the ground, the displacement distance of the detection probe of the detection box is calculated by the CPU chip of the control module and finally displayed on the display screen of the external remote control. This improves the accuracy of the ground flatness error and detection value. In addition, the detection box, together with the detection device, can simultaneously detect the flatness of the ground and the wall, improving detection efficiency. The sliding frame can be used to increase the flatness detection length of the ground or wall, improving detection accuracy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram:

[0021] Figure 1 A schematic diagram of the upper structure of the overall structure according to the present invention is shown;

[0022] Figure 2 A schematic diagram of the overall structure according to the present invention is shown below;

[0023] Figure 3A schematic diagram of the detection device according to the present invention is shown;

[0024] Figure 4 A schematic diagram of the connection portion according to the present invention is shown;

[0025] Figure 5 A schematic diagram of the rotating assembly according to the present invention is shown;

[0026] Figure 6 A schematic diagram of the slider according to the present invention is shown;

[0027] Figure 7 A schematic diagram of the structure of the detection element according to the present invention is shown;

[0028] Figure 8 A schematic diagram of the fixed slide section according to the present invention is shown;

[0029] Figure 9 The present invention is shown Figure 5 Enlarged structural diagram at point A;

[0030] Figure 10 A structural schematic diagram of a second usage method according to the present invention is shown.

[0031] List of reference numerals

[0032] 1. Main frame; 11. Base frame; 12. Vertical plate; 2. Fixed slide rail; 21. Slide rail; 2101. Raised bar; 2102. Locking bar; 2103. Slide groove; 22. Side plate; 2201. Switch; 3. Sliding component; 301. Top slider; 302. Side locking block; 303. Rotating shaft; 304. Connecting plate; 4. Rotating assembly; 41. Rotating rod; 4101. Snap ring; 42. Fixed base; 5. Connecting part 51. Connecting base plate; 52. Control module; 53. Pressure plate; 5301. Connecting block; 6. Detection device; 61. Base; 62. Connecting plate; 63. Pressing detection head; 64. Spring detection head; 65. Fixed detection head; 7. Detection component; 71. Sliding frame; 7101. Slide plate; 7102. Sliding plate; 7103. Slide rod; 72. Fixed frame; 73. Fixed plate; 74. Detection box. Detailed Implementation

[0033] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0034] Example 1: Please refer to Figures 1 to 9 :

[0035] This invention proposes a high-precision flatness testing device for building engineering, comprising a main frame 1 and a sliding component 3; the main frame 1 is composed of a base frame 11 and a vertical plate 12, the base frame 11 and the vertical plate 12 are perpendicularly connected to each other, and the rear end face of the vertical plate 12 is provided with casters; a fixed slide rail 2 and a motor are installed on the top surface of the base frame 11, and a testing component 7 is installed on the bottom surface of the base frame 11; a fixed seat 42 is fixedly connected to the top end of the drive shaft of the motor; a rotating rod 41 is slidably connected inside the fixed seat 42; the end of the rotating rod 41 is fixedly connected to the top surface of the sliding component 3; a connecting part 5 is installed on the top surface of the sliding component 3; a testing device 6 is installed on the left end face and the top surface of the connecting part 5 respectively; the connecting part 5 is electrically coupled to the motor, the fixed slide rail 2, the testing device 6 and the testing component 7 respectively.

[0036] Furthermore, according to embodiments of the present invention, as shown in the appendix Figure 8 As shown, the fixed slide section 2 also includes side plates 22, which are fixedly installed at the front and rear ends of the slide rail 21. A switch 2201 is installed on one end of the opposite side of the two sets of side plates 22. The switch 2201 is connected to the motor. When the motor is started and rotated by the control module 52, the drive shaft of the motor drives the rotating rod 41 to rotate, which in turn drives the sliding member 3 to slide on the slide rail 21. When it touches the switch 2201, the motor reverses. When the sliding member 3 slides in the opposite direction and touches the switch 2201 on the other side, the motor reverses again. This process is repeated to realize the reciprocating sliding of the sliding member 3, thereby realizing multiple measurements and improving the accuracy of the flatness detection results.

[0037] Furthermore, according to embodiments of the present invention, as shown in the appendix Figure 3 As shown, the detection device 6 includes a base 61, a connecting plate 62, a pressure detection head 63, a spring detection head 64, and a fixed detection head 65. The base 61 is fixedly connected to the top and left side of the control module 52. The connecting plate 62 is fixedly connected to the end of the base 61. Four sets of pressure detection heads 63, two sets of spring detection heads 64, and one set of fixed detection heads 65 are fixedly installed on the connecting plate 62. The pressure detection head 63 has a built-in spring and the detection head has a hemispherical structure. The spring detection head 64 has a spring on the bottom periphery. The fixed detection head 65, the spring detection head 64, and the pressure detection head 63 are respectively connected to the control module 52. When the spring detection head 64 contacts the detection plane, it undergoes displacement. When the detection heads of the pressing detection head 63, the spring detection head 64, and the fixed detection head 65 are simultaneously located on the same plane, and the displacement changes of the spring detection head 64 and the pressing detection head 63 are inconsistent, the CPU chip calculates the displacement and displays it on the remote control screen through the control module 52, thereby determining whether the flatness of the detection plane meets the requirements. At the same time, the maximum error value at different positions can be calculated to achieve high-precision flatness detection requirements. Simultaneously, the two sets of detection devices 6 can perform synchronous detection on the wall and ceiling, improving detection efficiency.

[0038] Furthermore, according to embodiments of the present invention, as shown in the appendix Figure 5 As shown, the connecting part 5 includes a connecting base plate 51, a control module 52, and a pressure plate 53. The top surface of the connecting base plate 51 is snapped with the control module 52. The control module 52 is equipped with a PLC controller and a CPU chip. The control module 52 is wirelessly connected to an external remote controller. The top surface of the control module 52 is snapped with the pressure plate 53. The bottom of the pressure plate 53 is provided with a rod. The bottom end of the rod is provided with a connecting block 5301. The connecting block 5301 is fixedly connected to the top surface of the connecting base plate 51 by a bolt assembly. The top surface and left side of the control module 52 are respectively fixedly connected to the detection device 6. The control module 52 enables the external remote controller to control the start and stop of the equipment. The pressure plate 53 and the connecting base plate 51 cooperate with each other to fix the detection device 6 in place.

[0039] Furthermore, according to embodiments of the present invention, as shown in the appendix Figure 6 As shown, the slider 3 is provided with a top slider 301, a side locking block 302, a rotating shaft 303, and a connecting plate 304. The top slider 301 is slidably locked onto the top surface of the slide rail 21, and the right end face of the top slider 301 is locked onto the left side of the locking strip 2102. The side locking block 302 is slidably locked onto the outside of the protrusion 2101, and the top surface of the side locking block 302 is locked onto the bottom surface of the locking strip 2102. The rotating shaft 303 is fixedly connected to the top surface of the slider 3, and a ring is provided at the bottom of the outer periphery of the rotating shaft 303. The connecting plate 304 is locked inside the ring. The connecting plate 304 is provided with an annular groove inside. When the rotating rod 41 rotates, it drives the connecting plate 304 and the slider 3 to slide on the slide rail 21. The top slider 301 slides on the top surface of the slide rail 21, and the side locking block 302 slides on the outside of the protrusion 2101. The front and rear sides of the slider 3 touch the switch 2201, so that the slider 3 can achieve reciprocating sliding.

[0040] Furthermore, according to embodiments of the present invention, as shown in the appendix Figure 5 and attached Figure 9 As shown, the rotating assembly 4 includes a rotating rod 41 and a fixed base 42. A retaining ring 4101 is provided in front of the rotating rod 41. The retaining ring 4101 is movably engaged between the connecting plate 304 and the bottom ring of the rotating shaft 303. The rotating rod 41 is slidably engaged inside the fixed base 42. During the process of the rotating rod 41 rotating into linear sliding, the rotating rod 41 slides inside the fixed base 42, so that the length of the rotating rod 41 can be adjusted. The retaining ring 4101 rotates inside the annular groove on the bottom surface of the connecting plate 304, so that the rotating rod 41 can drive the connecting part 5 to slide and can prevent the connecting part 5 from rotating when sliding, maintaining linear movement.

[0041] Furthermore, according to embodiments of the present invention, as shown in the appendix Figure 7As shown, the test piece 7 consists of a sliding frame 71, a fixed frame 72, a fixed clamping plate 73, and a test box 74. The sliding frame 71 is equipped with a sliding plate 7101, a sliding clamping plate 7102, and a sliding rod 7103. The sliding plate 7101 is slidably engaged with the inside of the fixed clamping plate 73, and the fixed clamping plate 73 is fixedly connected to the bottom surface of the base frame 11. The sliding clamping plate 7102 is slidably engaged with the inside of the fixed frame 72. There are two sets of sliding rods 7103. The front set of sliding rods 7103 is fixedly connected to the inside of the sliding frame 71 and slidably engaged with the bottom surface of the base frame 11. The rear set of sliding rods 7103 is slidably engaged with the sliding frame 7101. The frame 71 is fixedly connected to the bottom surface of the base frame 11. The detection box 74 is installed on the bottom surface of the sliding frame 71 and the fixed frame 72 respectively. The detection probe of the detection box 74 is connected to the control module 52. When the detection box 74 detects the flatness of the ground, the displacement distance of the detection probe of the detection box 74 is calculated by the CPU chip of the control module 52 and finally displayed on the display screen of the external remote control. This improves the accuracy of the error and detection value of the flatness of the ground. In addition, the detection box 74, together with the detection device 6, can simultaneously detect the flatness of the ground and the wall, improving the detection efficiency.

[0042] According to embodiments of the present invention, as shown in the appendix Figure 8 As shown, the fixed slide section 2 includes a slide rail 21, which is fixedly connected to the top surface of the base frame 11. The slide rail 21 is provided with a protrusion 2101, a retaining strip 2102, and a slide groove 2103. The protrusion 2101 is fixedly welded to the right side of the slide rail 21, and the retaining strip 2102 is fixedly welded to the right side of the slide rail 21, above the protrusion 2101. The slide groove 2103 is located inside the left side of the slide rail 21. The protrusion 2101 provides a sliding base for the sliding member 3 on the right side of the slide rail 21, while the retaining strip 2102 provides a limit for the sliding member 3 to prevent it from rotating to the right and falling off. At the same time, the slide groove 2103 provides a base for the side plate 22 to engage with the slide rail 21.

[0043] Example 2: Please refer to Figure 10 :

[0044] After rotating the main frame 1 ninety degrees so that the upright plate 12 faces the ground, the flatness of the wall can be detected by the detection box 74. The flatness of the two walls at the right angle can be detected simultaneously by the two sets of detection devices 6, which improves the detection efficiency. When the upright plate 12 faces the ground, the casters are attached to the ground, which makes it easy to move the equipment.

[0045] The specific usage and function of this embodiment: In this invention, when the motor is started and rotated by the control module 52, the drive shaft of the motor drives the rotating rod 41 to rotate. During the process of the rotating rod 41 rotating into linear sliding, the rotating rod 41 slides inside the fixed seat 42 so that the length of the rotating rod 41 can be adjusted. The retaining ring 4101 rotates inside the annular groove on the bottom surface of the connecting plate 304, so that the rotating rod 41 can drive the connecting part 5 to slide and can prevent the connecting part 5 from rotating when sliding, maintaining linear movement. At the same time, it drives the sliding member 3 to slide on the slide rail 21. After touching the switch 2201, the motor reverses. The sliding member 3 slides in the opposite direction and touches the switch 2201 on the other side, causing the motor to reverse again. This process is repeated to realize the reciprocating sliding of the sliding member 3.

[0046] When the detection heads of the pressure detection head 63, spring detection head 64 and fixed detection head 65 are simultaneously located on the same plane, and the displacement changes of the spring detection head 64 and the pressure detection head 63 are inconsistent, the CPU chip calculates the discrepancy and displays it on the remote control screen through the control module 52, thereby determining whether the flatness of the detection plane meets the requirements.

[0047] When the detection box 74 detects the flatness of the ground, the displacement distance of the detection probe of the detection box 74 is calculated by the CPU chip of the control module 52 and finally displayed on the display screen of the external remote control. This improves the accuracy of the ground flatness error and detection value. In addition, the detection box 74, together with the detection device 6, can simultaneously detect the flatness of the ground and the wall, thus improving the detection efficiency.

[0048] Finally, it should be noted that when describing the position of each component and the mating relationship between them, the present invention usually uses one or a pair of components as examples. However, those skilled in the art should understand that such positions, mating relationships, etc., are also applicable to other components or other pairs of components.

[0049] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A high-precision flatness detection device for construction engineering, characterized in that: The invention comprises a main frame (1), a sliding member (3) and a rotating assembly (4); the main frame (1) is composed of a base frame (11) and a vertical plate (12); the base frame (11) and the vertical plate (12) are vertically connected to each other, and a universal wheel is provided on the rear end surface of the vertical plate (12); a fixed slideway (2) and a motor are installed on the top surface of the base frame (11); and a detection member (7) is installed on the bottom surface of the base frame (11); The rotating assembly (4) comprises a rotating rod (41) and a fixing seat (42); The top end of the driving shaft of the motor is fixedly connected to a fixing seat (42); the fixing seat (42) is internally slidably connected to a rotating rod (41); the end of the rotating rod (41) is fixedly connected to the top surface of the sliding member (3); a connecting portion (5) is installed on the top surface of the sliding member (3); a detection device (6) is installed on the left end surface and the top surface of the connecting portion (5); the connecting portion (5) is respectively coupled to the motor, the fixed slide portion (2), the detection device (6) and the detection member (7) by circuits; The fixed slideway portion (2) comprises a slide rail (21), and the slide rail (21) is fixedly connected to the top surface of the base frame (11); The fixed slideway portion (2) further comprises side panels (22), the side panels (22) being fixedly mounted on the front and rear ends of the slide rail (21), and switches (2201) being mounted on one end of the opposite surfaces of the two sets of side panels (22), the circuit of the switch (2201) being connected to the motor; The sliding member (3) is provided with a top sliding block (301); the top sliding block (301) is slidably engaged with the top surface of the sliding rail (21).

2. A high-precision flatness detection device for construction engineering as claimed in claim 1, characterized in that: The slide rail (21) is provided with a convex strip (2101), a clamping strip (2102) and a slide groove (2103); the convex strip (2101) is fixedly welded to the right side of the slide rail (21); the clamping strip (2102) is fixedly welded to the right side of the slide rail (21) and above the convex strip (2101); and the slide groove (2103) is arranged inside the left side of the slide rail (21).

3. A high-precision flatness detection device for construction engineering as claimed in claim 1, characterized in that: The sliding member (3) is further provided with a side clamping block (302), a rotating shaft (303) and a connecting disk (304), and the right end surface of the top sliding block (301) is clamped on the left side of the clamping strip (2102), the side clamping block (302) is slidably clamped on the outside of the convex strip (2101), and the top surface of the side clamping block (302) is clamped on the bottom surface of the clamping strip (2102), the rotating shaft (303) is fixedly connected to the top surface of the sliding member (3), and a circular ring is provided at the bottom of the outer periphery of the rotating shaft (303), the connecting disk (304) is clamped inside the circular ring, and an annular clamping groove is provided inside the connecting disk (304).

4. A high-precision flatness detection device for construction engineering as claimed in claim 3, characterized in that: A snap ring (4101) is provided in front of the rotating rod (41), and the snap ring (4101) is movably clamped between the connecting plate (304) and the bottom ring of the rotating shaft (303), and the rotating rod (41) is slidably clamped inside the fixing seat (42).

5. A high-precision flatness detection device for construction engineering as claimed in claim 4, characterized in that: The connecting portion (5) comprises a connecting bottom plate (51), a control module (52) and a pressing plate (53); the top surface of the connecting bottom plate (51) is clamped with the control module (52); a PLC controller and a CPU chip are provided inside the control module (52); the control module (52) is connected to an external remote controller via wireless; the top surface of the control module (52) is clamped with the pressing plate (53); a rod is provided at the bottom of the pressing plate (53); a connecting block (5301) is provided at the bottom end of the rod; the connecting block (5301) is fixedly connected to the top surface of the connecting bottom plate (51) via a bolt assembly; and the top surface and the left side surface of the control module (52) are respectively fixedly connected to the detection device (6).

6. A high-precision flatness detection device for construction engineering as claimed in claim 5, characterized in that: The detection device (6) comprises a base (61), a connecting plate (62), a pressure detection head (63), a spring detection head (64) and a fixed detection head (65); the base (61) is fixedly connected to the top surface and the left side surface of the control module (52); the end of the base (61) is fixedly connected to the connecting plate (62); four groups of pressure detection heads (63), two groups of spring detection heads (64) and one group of fixed detection heads (65) are fixedly mounted on the connecting plate (62); the pressure detection head (63) is provided with a built-in spring and the detection head has a hemispherical structure; the bottom periphery of the spring detection head (64) is provided with a spring; the fixed detection head (65), the spring detection head (64) and the pressure detection head (63) are respectively connected to the control module (52).

7. A high-precision flatness detection device for construction engineering as claimed in claim 6, characterized in that: The detection member (7) is composed of a sliding frame (71), a fixed frame (72), a fixed card plate (73) and a detection box (74); the sliding frame (71) is provided with a sliding plate (7101), a sliding card plate (7102) and a sliding rod (7103); the sliding plate (7101) is slidably clamped on the inner side of the fixed card plate (73); the fixed card plate (73) is fixedly connected to the bottom surface of the bottom frame (11); the sliding card plate (7102) is slidably clamped on the inner side of the fixed frame (72); There are two groups of sliding bars (7103), one group of sliding bars (7103) on the front side is fixedly connected to the inside of the sliding frame (71) and slidably connected to the bottom surface of the bottom frame (11), and the other group of sliding bars (7103) on the rear side is slidably connected to the inside of the sliding frame (71) and fixedly connected to the bottom surface of the bottom frame (11). The detection box (74) is respectively mounted on the bottom surfaces of the sliding frame (71) and the fixed frame (72), and the detection probe of the detection box (74) is connected to the control module (52).

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