A building wall flatness detection device based on laser operation

Abstract

The present invention discloses a building wall flatness detection device based on laser operation, including a support frame, a servo motor, a height adjustment mechanism, an intermittent drive mechanism and an intermittent adjustment mechanism, wherein the support frame is connected to a support plate through the height adjustment mechanism, and casters are installed at the lower end of the support frame, a strip-shaped through groove penetrating the front and rear sides of the support plate is provided, and a screw rod is installed on the bearing of the support plate, a laser measuring instrument is threadedly connected to the screw rod, and the position of the laser measuring instrument corresponds to the strip-shaped through groove, an intermittent drive mechanism is installed on the screw rod, and an intermittent adjustment mechanism is provided on the intermittent drive mechanism. The invention can automatically detect and can evenly detect multiple points, thereby facilitating the improvement of detection accuracy, and can also detect walls of different heights, thereby facilitating use.

Description

Technical Field

[0001] The invention relates to the technical field of wall flatness measurement, in particular to a building wall flatness detection device based on laser operation. Background Art

[0002] The building wall flatness detection device is a device used to detect the flatness of the wall. After the wall is built, its surface is not flat and needs to be processed by painting and other processes. Whether the processed wall is flat directly affects the appearance and subsequent layout. In order to ensure that the processed wall is flat, it is often necessary to detect its flatness during the processing process so as to adjust the processing plan according to the situation;

[0003] There are two common building wall flatness detection devices. One is to judge whether the wall at the detection position is flat based on the position of the level bubble. The other is to detect by laser, and judge whether the wall surface is flat by emitting and receiving laser.

[0004] The existing laser-based building wall flatness detection device still has the following technical problems when in use, such as:

[0005] 1. The existing building wall flatness detection device needs to be manually controlled when in use, which is not convenient for automatically completing the detection process, and thus not only is it not convenient to evenly detect the flatness of the wall, but also cannot reduce the labor intensity of the staff;

[0006] 2. The existing building wall flatness detection device cannot adjust the detection height range when in use. Since the height of the wall is generally related to the floor height, and the general floor height is about 2.8 meters, the existing building wall flatness detection device is not convenient for detecting high walls;

[0007] Therefore, a building wall flatness detection device based on laser operation is needed to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide a building wall flatness detection device based on laser operation to solve the problem mentioned in the above background technology that the existing building wall flatness detection device is not convenient for automatically and evenly detecting the wall flatness and is not convenient for detecting high walls.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A building wall flatness detection device based on laser operation includes a support frame, a servo motor, a height adjustment mechanism, an intermittent drive mechanism and an intermittent adjustment mechanism, wherein the support frame is connected to a support plate through the height adjustment mechanism, and a caster is installed at the lower end of the support frame, a strip-shaped through groove running through the front and rear sides of the support plate is provided, and a lead screw is installed on a bearing on the support plate, a laser measuring instrument is threadedly connected to the lead screw, and the position of the laser measuring instrument corresponds to the strip-shaped through groove, an intermittent drive mechanism is installed on the lead screw, and an intermittent adjustment mechanism is provided on the intermittent drive mechanism.

[0011] Furthermore, the height adjustment mechanism includes a thread groove, a screw rod, a shaft rod, a worm gear mechanism and a rocker, and two thread grooves are provided on the lower surface of the support plate, and the two screw rods are respectively threadedly connected in the two thread grooves, and the lower ends of the two screw rods are bearing-connected to the inner top surface of the support frame, and the lower parts of the two screw rods are connected to the shaft rod through the worm gear mechanism, and the shaft rod bearing is connected in the support frame, and one end of the shaft rod passes through the outside of the support frame, and a rocker is installed on the end of the shaft rod passing through the outside of the support frame.

[0012] By adopting the above technical solution, the shaft rod can be driven to rotate by hand-cranking the joystick, and then the screw rod can be driven to rotate through the worm gear mechanism, so that the support plate provided with the thread groove can be moved in the vertical direction. By adjusting the height of the support plate, the detection height range can be changed, so that the staff can more easily measure the flatness of the high wall.

[0013] Furthermore, the intermittent drive mechanism is provided with two groups on the screw rod, and the two groups of intermittent drive mechanisms are respectively arranged at the upper and lower ends of the screw rod, and the two groups of intermittent drive mechanisms are connected through a drive rod, the upper end bearing of the drive rod is connected to the inner top end of the support plate, and the lower end of the drive rod is coaxially fixedly connected to the shaft end of the servo motor, and the servo motor is installed at the inner bottom end of the support plate.

[0014] By adopting the above technical solution, two sets of intermittent driving mechanisms can be used to make the screw rod rotate back and forth with a gap, thereby realizing the intermittent up and down reciprocating movement of the laser measuring instrument, so as to automatically detect the flatness of the wall.

[0015] Furthermore, the intermittent drive mechanism includes a connecting strip, a partition, a transmission twist tube, a cam tube, a driving twist tube, a support frame, an extrusion block, a first ratchet mechanism, a second ratchet mechanism, a limit strip groove, a limit rod, a pressure rod, a threaded tube and a spring. The two ends of the connecting strip are fixedly connected to the support plate. Two partitions are provided on each connecting strip, and the partitions and the connecting strips connected to them are perpendicular to each other, and the partitions are also connected to the support plate. The transmission twist tube bearing is connected to the connecting strip, and the inner side of the transmission twist tube is connected to the screw rod through the first ratchet mechanism. The inner side of the driving twist tube is connected to the outer side of the transmission twist tube by a threaded connection, and two limit strip grooves are symmetrically provided on the outer side of the driving twist tube, and the corresponding limit rods are slidably connected in the limit strip grooves. One end, and the other end of the limit rod is fixedly connected to the corresponding partition, the support frame is arranged on the outside of the driving twist tube, and the two ends of the support frame are respectively movably connected to the two partitions of the same height, the two extrusion blocks are symmetrically connected to the lower surface of the support frame, and the two extrusion blocks are arranged one by one corresponding to the two pressure-bearing rods, the lower end of the pressure-bearing rod is threadedly connected to the inner side of the upper end of the threaded tube, and the lower end bearing of the threaded tube is connected to the upper surface of the lower end of the driving twist tube, the spring sleeve is arranged on the outside of the screw rod, and the two ends of the screw rod are respectively connected to the lower surface of the driving twist tube and the inner side of the support plate, one end of the support frame is slidably connected to the cam tube, and the cam tube is movably penetrated by the driving rod, and the cam tube is connected to the driving rod through a second ratchet mechanism, and the upper end bearing of the cam tube is connected to the lower surface of the corresponding connecting strip.

[0016] By adopting the above technical scheme, the servo motor can be operated to make the cam tube continuously reciprocate and squeeze the support frame, so that the extrusion block connected to the support frame continuously squeezes the pressure rod, and cooperates with the spring to drive the twist tube to continuously reciprocate up and down. By driving the twist tube to continuously reciprocate, the transmission twist tube can be rotated forward and reversely, and the first ratchet mechanism is used to make the lead screw rotate unidirectionally, so that the laser measuring instrument connected to it can be intermittently moved in the vertical direction. During the intervals of the movement of the laser measuring instrument, it will detect the flatness of the wall, thereby realizing automatic detection. Due to its intermittent movement, it can automatically detect multiple points, which can facilitate uniform detection of the wall.

[0017] Furthermore, the directions of the two second ratchet mechanisms are opposite, and the reverse directions of the two first ratchet mechanisms are also opposite.

[0018] By adopting the above technical solution, the forward and reverse intermittent rotation of the lead screw can be realized through the forward and reverse rotation of the servo motor, so that the laser measuring instrument can be conveniently detected from top to bottom and from bottom to bottom.

[0019] Furthermore, the outer side of the transmission twisted tube and the inner side of the driving twisted tube are provided with mutually matching twisted threads, and the threads on the two transmission twisted tubes and the two driving twisted tubes have opposite rotation directions.

[0020] By adopting the above technical scheme, the transmission twisted tube can be driven to rotate by the movement of the driving twisted tube, thereby achieving the purpose of the transmission twisted tube driving the screw to rotate through the first ratchet mechanism. By having the threads on the two transmission twisted tubes and the two driving twisted tubes have opposite rotation directions, the servo motor can drive the screw to rotate intermittently in the forward and reverse directions respectively by forward and reverse rotation.

[0021] Furthermore, the intermittent adjustment mechanism includes an adjusting gear ring, a positioning strip groove, a positioning rod and a transmission gear. The two positioning strip grooves are arranged at equal angles on the driving twist tube, and each positioning strip groove is slidably connected with one end of a corresponding positioning rod. The other end of the positioning rod is fixedly connected to the corresponding pressure-bearing rod. The transmission gear key is connected to the outer side of the lower end of the corresponding threaded tube, and the transmission gear is meshed with the adjusting gear ring, and the adjusting gear ring bearing is connected to the upper surface of the lower end of the driving twist tube.

[0022] By adopting the above technical solution, the gear ring can be rotated and adjusted according to needs, and the threaded tube can be driven to rotate through the transmission gear, so that the pressure-bearing rod moves in the vertical direction under the action of the positioning strip groove and the positioning rod, thereby adjusting the amplitude of the up and down reciprocating movement of the twisted tube, so as to adjust the intermittent movement distance of the laser measuring instrument.

[0023] Furthermore, the upper surface of the adjusting toothed ring is provided with protruding structures at equal angles, and the adjusting toothed ring is coaxially arranged with the driving twisted tube.

[0024] By adopting the above technical solution, the rotation of the gear ring can be adjusted conveniently by turning the raised structure.

[0025] Furthermore, a hole for the driving rod to pass through is reserved on one side of the connecting strip, and the connecting strip is coaxially arranged with the screw rod.

[0026] The adoption of the above technical solution can facilitate the installation of the driving rod penetrating the connecting strip, and can facilitate the improvement of the symmetry of the structure, thereby improving the stability of the structure.

[0027] Furthermore, the other end of the support frame is electrically inductively connected to a laser measuring instrument, so that after the support frame moves in a single direction once, the laser measuring instrument measures once, so that the measurement frequency of the laser measuring instrument is consistent with the frequency of the support frame moving in a single direction.

[0028] By adopting the above technical solution, the purpose of the laser measuring instrument measuring once every time the support frame moves in one direction can be achieved, and the laser measuring instrument can measure once in the interval of each movement, thereby achieving the purpose of automatic measurement.

[0029] Compared with the prior art, the invention has the following beneficial effects: the building wall flatness detection device based on laser operation can automatically detect and can evenly detect multiple points, thereby facilitating the improvement of detection accuracy, and can detect walls of different heights, thereby facilitating the use of:

[0030] 1. The intermittent movement of the laser measuring instrument can be achieved through the forward and reverse rotation of the servo motor. During the movement intervals, the laser measuring instrument can perform measurements. During the entire detection process, the servo motor continues to run without intermittent stops, thereby avoiding reducing the service life of the servo motor. In addition, the intermittent movement amplitude of the laser measuring instrument can be adjusted by rotating the transmission gear, thereby facilitating multi-point uniform detection and improving the accuracy of detection;

[0031] 2. By turning the rocker, the screw can be driven to rotate, and the height of the support plate can be adjusted. By adjusting the height of the support plate, the height range of the laser measuring instrument can be adjusted, and the wall at a higher position can be detected, which is helpful for the staff to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0033] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the support frame and screw rod connection structure of the present invention;

[0035] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a support plate of the present invention;

[0036] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of point A;

[0037] Figure 6 It is a schematic diagram of the partial explosion structure of the present invention;

[0038] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of point B in the middle;

[0039] Figure 8 It is a schematic diagram of the connection structure between the driving rod and the cam tube of the present invention;

[0040] Fig. 9 It is a schematic diagram of the cross-sectional structure of the connection between the support frame and the cam tube of the present invention;

[0041] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at point C in the middle.

[0042] In the figure: 1. support frame; 2. caster; 3. support plate; 4. strip groove; 5. lead screw; 6. laser measuring instrument; 7. connecting strip plate; 8. threaded groove; 9. screw; 10. shaft rod; 11. worm gear mechanism; 12. rocker; 13. partition; 14. transmission twist pipe; 15. driving rod; 16. cam tube; 17. servo motor; 18. driving twist pipe; 19. support frame; 20. extrusion block; 21. first ratchet mechanism; 22. second ratchet mechanism; 23. limit strip groove; 24. limit rod; 25. adjustment gear ring; 26. positioning strip groove; 27. positioning rod; 28. pressure rod; 29. ​​threaded tube; 30. transmission gear; 31. spring. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figure 1-10 , the present invention provides a technical solution:

[0045] Embodiment 1: In order to solve the problem that the conventional building wall flatness detection device is not convenient for detecting the flatness of the high wall surface, the following technical solution is provided. Specifically,

[0046] A building wall flatness detection device based on laser operation, comprising a support frame 1, a servo motor 17, a height adjustment mechanism, an intermittent driving mechanism and an intermittent adjustment mechanism, characterized in that: the support frame 1 is connected to a support plate 3 through a height adjustment mechanism, and a caster 2 is installed at the lower end of the support frame 1, a strip-shaped through groove 4 penetrating the front and rear sides thereof is arranged on the support plate 3, and a screw rod 5 is installed on a bearing on the support plate 3, a laser measuring instrument 6 is threadedly connected to the screw rod 5, and the position of the laser measuring instrument 6 corresponds to the strip-shaped through groove 4, and the height adjustment mechanism comprises a screw rod 5; Grooves 8, screw rods 9, shaft rods 10, worm gear mechanisms 11 and rocker arms 12. Two thread grooves 8 are provided on the lower surface of the support plate 3. Two screw rods 9 are respectively threadedly connected in the two thread grooves 8, and the lower ends of the two screw rods 9 are bearing-connected to the inner top surface of the support frame 1. The lower parts of the two screw rods 9 are connected to the shaft rod 10 through the worm gear mechanism 11, and the shaft rod 10 is bearing-connected in the support frame 1, and one end of the shaft rod 10 passes through the outside of the support frame 1, and a rocker arm 12 is installed on the end of the shaft rod 10 passing through the outside of the support frame 1.

[0047] When in use, the rocker 12 is turned to drive the shaft 10 to rotate, and the screw 9 is rotated through the worm gear mechanism 11. The threaded connection between the screw 9 and the thread groove 8 allows the support plate 3 to move in the vertical direction, thereby achieving the purpose of adjusting the measuring range of the laser measuring instrument 6.

[0048] Embodiment 2: To solve the problem that the conventional building wall flatness detection device cannot automatically detect the wall flatness and cannot evenly detect multiple points, specifically,

[0049] An intermittent driving mechanism is installed on the screw rod 5, and an intermittent adjusting mechanism is arranged on the intermittent driving mechanism.

[0050] Two groups of intermittent drive mechanisms are arranged on the screw rod 5, and the two groups of intermittent drive mechanisms are respectively arranged at the upper and lower ends of the screw rod 5, and the two groups of intermittent drive mechanisms are connected by a drive rod 15, the upper end bearing of the drive rod 15 is connected to the inner top end of the support plate 3, and the lower end of the drive rod 15 is coaxially fixedly connected to the shaft end of the servo motor 17, and the servo motor 17 is installed at the inner bottom end of the support plate 3. The intermittent drive mechanism includes a connecting strip plate 7, a partition plate 13, a transmission twist tube 14, a cam tube 16, a driving twist tube 18, a support frame 19, an extrusion block 20, a first ratchet mechanism 21, a second ratchet mechanism 22, a limiting strip groove 23, a limiting rod 24, a pressure rod 28, a threaded tube 29 and a spring 31, and the two ends of the connecting strip plate 7 are fixedly connected to the support plate 3 On the top, two partitions 13 are provided on each connecting strip plate 7, and the partitions 13 and the connecting strip plates 7 connected thereto are perpendicular to each other, and the partitions 13 are also connected to the support plate 3, the transmission twist tube 14 bearing is connected to the connecting strip plate 7, and the inner side of the transmission twist tube 14 is connected to the screw rod 5 through the first ratchet mechanism 21, the inner side of the driving twist tube 18 is connected to the outer side of the transmission twist tube 14 by a threaded connection, and the outer side of the driving twist tube 18 is symmetrically provided with two limiting strip grooves 23, and the limiting strip grooves 23 are slidably connected with one end of the corresponding limiting rod 24, and the other end of the limiting rod 24 is fixedly connected to the corresponding partition 13, and the support frame 19 is arranged on the outer side of the driving twist tube 18, and the two ends of the support frame 19 are respectively movably penetrated Two partitions 13 of the same height, two extrusion blocks 20 are symmetrically connected to the lower surface of the support frame 19, and the two extrusion blocks 20 are arranged one by one with the two pressure rods 28, the lower end of the pressure rod 28 is threadedly connected to the inner side of the upper end of the threaded tube 29, and the lower end bearing of the threaded tube 29 is connected to the upper surface of the lower end of the driving twist tube 18, the spring 31 is sleeved on the outer side of the screw rod 5, and the two ends of the screw rod 5 are respectively connected to the lower surface of the driving twist tube 18 and the inner side of the support plate 3, one end of the support frame 19 is slidably connected to the cam tube 16, and the cam tube 16 is movably penetrated by the driving rod 15, and the cam tube 16 is connected to the driving rod 15 through the second ratchet mechanism 22, the upper end bearing of the cam tube 16 is connected to the lower surface of the corresponding connecting strip 7, and the two second The directions of the ratchet mechanism 22 are opposite, and the reverse directions of the two first ratchet mechanisms 21 are also opposite. The outer side of the transmission twist tube 14 and the inner side of the driving twist tube 18 are provided with mutually matching twist threads, and the threads on the two transmission twist tubes 14 and the two driving twist tubes 18 are in opposite directions. The intermittent adjustment mechanism includes an adjustment tooth ring 25, a positioning strip groove 26, a positioning rod 27 and a transmission gear 30. The two positioning strip grooves 26 are arranged at equal angles on the driving twist tube 18, and each positioning strip groove 26 is slidably connected with one end of the corresponding positioning rod 27, and the other end of the positioning rod 27 is fixedly connected to the corresponding pressure-bearing rod 28. The transmission gear 30 is key-connected to the outer side of the lower end of the corresponding threaded tube 29, and the transmission gear 30 is meshed with the adjustment tooth ring 25.The bearing of the adjusting tooth ring 25 is connected to the upper surface of the lower end of the driving twist tube 18. The upper surface of the adjusting tooth ring 25 is provided with a convex structure at equal angles, and the adjusting tooth ring 25 is coaxially arranged with the driving twist tube 18. A hole for the driving rod 15 to pass through is reserved on one side of the connecting strip 7, and the connecting strip 7 is coaxially arranged with the screw rod 5. The other end of the support frame 19 is electrically inductively connected to the laser measuring instrument 6, so that after the support frame 19 moves in a single direction once, the laser measuring instrument 6 measures once, so that the measurement frequency of the laser measuring instrument 6 is consistent with the frequency of the single-direction movement of the support frame 19.

[0051] When in use, the servo motor 17 runs to rotate the driving rod 15, and then the cam tube 16 is driven to rotate through the second ratchet mechanism 22. The rotation of the cam tube 16 squeezes the support frame 19, so that the squeezing block 20 on the support frame 19 squeezes the pressure rod 28, thereby moving the driving twist tube 18. In the process of moving the driving twist tube 18, the transmission twist tube 14 can be rotated through the twist thread connection with the transmission twist tube 14, and then the lead screw 5 is driven to rotate through the first ratchet mechanism 21. In the above process, the driving twist tube 18 is reset by the spring 31, so that under the action of the cam tube 16 and the spring 31, the support frame 19 can reciprocate horizontally, and the driving twist tube 18 can reciprocate vertically, cooperating with the first ratchet mechanism 21 to make the lead screw 5 rotate. The rod 5 rotates intermittently. Through the intermittent driving mechanism at the upper and lower ends of the screw rod 5, the screw rod 5 can be made to rotate intermittently in the forward direction when the servo motor 17 rotates forward, and the screw rod 5 can be made to rotate intermittently in the reverse direction when the servo motor 17 rotates reversely, so that the laser measuring instrument 6 can be intermittently moved in the vertical direction. The other end of the support frame 19 is electrically inductively connected to the laser measuring instrument 6, so that the laser measuring instrument 6 can perform measurements in the intervals of movement, thereby realizing automatic measurement of multiple points uniformly. In addition, in the above process, the gear ring 25 can be rotated to drive the transmission gear 30 to rotate, so that the pressure rod 28 is threadedly connected to the threaded tube 29, and moves in the vertical direction under the limiting action of the positioning strip groove 26 and the positioning rod 27, so that the amplitude of the intermittent movement of the laser measuring instrument 6 can be adjusted.

[0052] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A building wall flatness detection device based on laser operation, comprising a support frame (1), a servo motor (17), a height adjustment mechanism, an intermittent driving mechanism and an intermittent adjustment mechanism, characterized in that: The support frame (1) is connected to the support plate (3) through a height adjustment mechanism, and a caster (2) is installed at the lower end of the support frame (1). The support plate (3) is provided with a strip-shaped through groove (4) penetrating the front and rear sides thereof, and a screw rod (5) is installed on the support plate (3) in a bearing, a laser measuring instrument (6) is threadedly connected to the screw rod (5), and the position of the laser measuring instrument (6) corresponds to the strip-shaped through groove (4), and an intermittent driving mechanism is installed on the screw rod (5), and the intermittent driving mechanism is provided with two groups on the screw rod (5), and the two groups of intermittent driving mechanisms are respectively arranged at the upper and lower ends of the screw rod (5), and the two groups of intermittent driving mechanisms are connected through a driving rod (15), and the upper end bearing of the driving rod (15) is connected to the support plate (3). The inner top end is fixedly connected to the shaft end of the servo motor (17) coaxially, and the servo motor (17) is installed on the inner bottom end of the support plate (3). The intermittent drive mechanism comprises a connecting strip plate (7), a partition plate (13), a transmission twist tube (14), a cam tube (16), a driving twist tube (18), a support frame (19), an extrusion block (20), a first ratchet mechanism (21), a second ratchet mechanism (22), a limiting strip groove (23), a limiting rod (24), a pressure rod (28), a threaded tube (29) and a spring (31). Both ends of the connecting strip plate (7) are fixedly connected to the support plate (3). Two partition plates (13) are provided on each connecting strip plate (7), and the partition plates (13) are connected to the supporting plate (3). The connected connecting strips (7) are perpendicular to each other, and the partition (13) is also connected to the support plate (3). The transmission twisted tube (14) bearing is connected to the connecting strip (7), and the inner side of the transmission twisted tube (14) is connected to the screw rod (5) through a first ratchet mechanism (21). The inner side of the driving twisted tube (18) is connected to the outer side of the transmission twisted tube (14) by a threaded connection, and the outer side of the driving twisted tube (18) is symmetrically provided with two limiting strip grooves (23), and one end of a corresponding limiting rod (24) is slidably connected in the limiting strip groove (23), and the other end of the limiting rod (24) is fixedly connected to the corresponding partition (13). The support frame (19) is arranged on the outer side of the driving twisted tube (18), and the support frame (19) is arranged on the outer side of the driving twisted tube (18). The two ends of the support frame (19) are respectively movably connected to two partitions (13) of the same height, the two extrusion blocks (20) are symmetrically connected to the lower surface of the support frame (19), and the two extrusion blocks (20) are arranged one by one with the two pressure-bearing rods (28), the lower end of the pressure-bearing rod (28) is threadedly connected to the inner side of the upper end of the threaded tube (29), and the lower end bearing of the threaded tube (29) is connected to the upper surface of the lower end of the driving twist tube (18), the spring (31) is sleeved on the outer side of the screw rod (5), and the two ends of the screw rod (5) are respectively connected to the lower surface of the driving twist tube (18) and the inner side of the support plate (3), one end of the support frame (19) is slidably connected to the cam tube (16), and the cam tube (16) is movably penetrated by the driving rod (15),The cam tube (16) is connected to the driving rod (15) through a second ratchet mechanism (22). The upper end bearing of the cam tube (16) is connected to the lower surface of the corresponding connecting strip plate (7). The intermittent driving mechanism is provided with an intermittent adjustment mechanism, which includes an adjustment tooth ring (25), a positioning strip groove (26), a positioning rod (27) and a transmission gear (30). Two positioning strip grooves (26) are arranged at equal angles on the driving twist tube (18), and one end of a corresponding positioning rod (27) is slidably connected in each positioning strip groove (26). The other end of the positioning rod (27) is fixedly connected to the corresponding pressure bearing rod (28). The transmission gear (30) is key-connected to the outer side of the lower end of the corresponding threaded tube (29), and the transmission gear (30) is meshedly connected to the adjustment tooth ring (25). The adjustment tooth ring (25) is bearing-connected to the upper surface of the lower end of the driving twist tube (18).

2. The laser-based building wall flatness detection device according to claim 1, characterized in that: The height adjustment mechanism comprises a thread groove (8), a screw rod (9), a shaft rod (10), a worm gear mechanism (11) and a rocker (12); two thread grooves (8) are provided on the lower surface of the support plate (3); the two screw rods (9) are respectively threadedly connected in the two thread grooves (8); the lower ends of the two screw rods (9) are both bearing-connected to the inner top surface of the support frame (1); the lower parts of the two screw rods (9) are both connected to the shaft rod (10) through the worm gear mechanism (11); the shaft rod (10) is bearing-connected in the support frame (1); one end of the shaft rod (10) passes through the outside of the support frame (1); and the rocker (12) is mounted on the end of the shaft rod (10) that passes through the outside of the support frame (1).

3. The laser-based building wall flatness detection device according to claim 2, characterized in that: The directions of the two second ratchet mechanisms (22) are opposite, and the reverse directions of the two first ratchet mechanisms (21) are also opposite.

4. The laser-based building wall flatness detection device according to claim 3, characterized in that: The outer side of the transmission twisted tube (14) and the inner side of the driving twisted tube (18) are provided with mutually matching twisted threads, and the threads on the two transmission twisted tubes (14) and the two driving twisted tubes (18) have opposite rotation directions.

5. The laser-based building wall flatness detection device according to claim 4, characterized in that: The upper surface of the adjusting toothed ring (25) is provided with protruding structures at equal angles, and the adjusting toothed ring (25) is coaxially arranged with the driving twisted tube (18).

6. The laser-based building wall flatness detection device according to claim 5, characterized in that: A hole is reserved on one side of the connecting strip (7) for the driving rod (15) to pass through, and the connecting strip (7) and the screw rod (5) are coaxially arranged.

7. The laser-based building wall flatness detection device according to claim 6, characterized in that: The other end of the support frame (19) is electrically inductively connected to the laser measuring instrument (6), so that after the support frame (19) moves once in a single direction, the laser measuring instrument (6) measures once, thereby making the measurement frequency of the laser measuring instrument (6) consistent with the frequency of the single-direction movement of the support frame (19).

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