A construction engineering verticality detection device and detection method

Abstract

The present application provides a construction engineering verticality detection device and detection method, belonging to the field of construction verticality detection technology, the detection device comprises: a support plate, a connection seat is provided at the bottom, an arc groove is provided at the bottom of the connection seat, and a ball is rotatably connected in the arc groove; a first fixed plate, a plurality of push rods are provided on the upper surface thereof for radial sliding, and the top surface of the first fixed plate is connected to the bottom of the ball; a second fixed plate is provided below the first fixed plate, a first through hole is provided on the second fixed plate, a suspension line is passed through the first through hole, a plumb bob is hung at the bottom of the suspension line, and the top of the suspension line is connected to a traction mechanism; a laser rangefinder is provided below the second fixed plate, the laser rangefinder is used to measure the distance between it and the cylindrical structure, the laser rangefinder is hinged to the telescopic end of a linear mechanism, and the telescopic direction of the telescopic end of the linear mechanism is parallel to the axial direction of the second fixed plate. The device can realize the automatic detection of the verticality of the pile foundation hole.

Description

Technical Field

[0001] The invention belongs to the technical field of building verticality detection, relates to pile foundation hole verticality detection, and in particular to a building engineering verticality detection device and detection method. Background Art

[0002] At present, the construction of high-rise buildings requires the ground to be compacted first, and then the pile foundation holes are opened. During the process of opening the pile foundation holes, the concrete is gradually poured downward using a circular mold. Because the drilling equipment has been used for a long time, the accuracy is reduced, and the drilling may be tilted, which affects the verticality of the pile foundation hole. The verticality of the pile foundation hole is an important indicator in pile foundation construction, which will affect the bearing capacity and structural safety of the pile foundation. The existing method for detecting the verticality of the pile foundation hole is to hang a plumb bob on the top of the pile foundation hole. After the plumb bob is stable and no longer shakes, the surveyor measures the distance between the two positions of the plumb bob's hanging line at different heights and the side of the pile foundation hole in the pile foundation hole, and then calculates the verticality by combining the distance between the two positions at different heights of the hanging line. The problem with this method is that manual measurement is prone to errors, the inner wall of the pile foundation hole may have pits, which will affect the measured value, and usually the surveyor measures in the direction of the pile foundation hole tilt to measure a more accurate verticality, and the naked eye cannot judge the tilt direction of the pile foundation hole, and the surveyor needs to measure in multiple directions, which is inefficient and labor-intensive. Therefore, it is necessary to make improvements. Summary of the invention

[0003] In order to solve the above-mentioned defects of the prior art, the present application provides a construction engineering verticality detection device and detection method to realize automatic detection of the verticality of pile foundation holes.

[0004] In order to achieve the above object, the present invention adopts the following technologies:

[0005] A construction engineering verticality detection device, comprising:

[0006] The support plate has a connecting seat at the bottom, an arc groove is formed at the bottom of the connecting seat, and a ball is rotatably connected in the arc groove;

[0007] A first fixed plate, on which a plurality of push rods are radially slidably arranged, and the plurality of push rods are arranged to move synchronously along the radial direction of the first fixed plate, the top surface of the first fixed plate is connected to the bottom of the ball, the center of the ball is in the axial direction of the first fixed plate, and a vertical plate is arranged at one end of the push rods facing outwards;

[0008] The second fixed plate is coaxially arranged below the first fixed plate, the second fixed plate is coaxially provided with a first through hole, a suspension wire is passed through the first through hole, a plumb bob is hung at the bottom of the suspension wire, the top of the plumb bob is a cylindrical structure, and the top of the suspension wire is connected to a traction mechanism;

[0009] A laser rangefinder is arranged below the second fixed plate. The laser rangefinder is used to measure the distance between the laser rangefinder and the cylindrical structure. The laser rangefinder is hinged to the telescopic end of a linear mechanism. The axial direction of the hinge is parallel to the tangent direction of the circumferential side of the second fixed plate. The laser rangefinder is used to ensure that the direction of the light emitted by the laser rangefinder in a stationary state is always perpendicular to the telescopic direction of the telescopic end of the plumb linear mechanism in a stationary state and is parallel to the axial direction of the second fixed plate.

[0010] Furthermore, a gear ring is coaxially rotated on the second fixed disk, the gear ring is meshed with a driving gear, the driving gear is connected to an output shaft of a first motor, and the linear mechanism is fixed on the gear ring.

[0011] Furthermore, an annular groove is provided on the second fixed disk, the gear ring is an internal gear ring, the gear ring is rotatably arranged in the annular groove, the driving gear is meshedly connected in the gear ring, and a plurality of limit gears are meshedly connected in the gear ring, and the limit gears are rotatably connected to the second fixed disk.

[0012] Furthermore, a circular cavity is coaxially opened in the first fixed disk, and a plurality of second through holes are opened in a circular array on the circumferential side of the first fixed disk, the second through holes extend into the circular cavity, and a plurality of push rods are respectively slidably arranged in the plurality of second through holes, and the inward ends of the push rods extend into the circular cavity, a push ring is coaxially arranged in the circular cavity, and a plurality of arc-shaped push blocks are arranged in a circular array on the circumferential side of the push ring, the push ring is connected to the output shaft of a second motor, and the second motor is fixed under the first push ring, and when the push ring rotates by a preset angle, the plurality of arc-shaped push blocks respectively abut against the plurality of push rods and push the push rods out a preset distance.

[0013] Furthermore, a limit ring is provided on the push rod, and the limit ring is located outside the first fixed disk. A spring is sleeved on the push rod, one end of the spring is connected to the limit ring, and the other end of the spring is connected to the outer peripheral side of the first fixed disk. When the push rod is pushed out by the arc-shaped push block, the spring is in a stretched state.

[0014] Furthermore, a connecting disk is provided between the first fixed disk and the second fixed disk, the second motor is provided between the first fixed disk and the connecting disk, and the bottom of the connecting disk is connected to the second fixed disk via a vertical rod.

[0015] Furthermore, the traction mechanism includes a fixed shaft, a third motor, the fixed shaft is rotatably connected to a support seat, the support seat is fixed to the top of the support plate, the top of the suspension wire is connected to the fixed shaft, a third through hole is vertically opened on the support plate, the suspension wire is passed through the third through hole, and the output shaft of the third motor is connected to the fixed shaft.

[0016] Furthermore, a first guide column is transversely arranged on the circumference of the first fixed plate, a second guide column is transversely arranged on the connecting plate, the first guide column is parallel to the second guide column, and the suspension line passes around the first guide column and the second guide column and is connected to the plumb bob.

[0017] A method for detecting verticality of a construction project is implemented by using the above-mentioned device for detecting verticality of a construction project, and the specific steps include:

[0018] S1, fix the detection device to the top of the pile foundation hole to be detected by the support plate, control the push rod to push out, make the vertical plate abut against the inner wall of the pile foundation hole, and push the first fixed plate until the axial direction is the same as the axial direction of the pile foundation hole;

[0019] S2, control the laser rangefinder to measure the distance X1 between it and the cylindrical structure at the top of the plumb bob, then control the first motor to drive the gear ring to rotate the preset angle multiple times until it is reset, and control the laser rangefinder to measure the distances X2 and X3 between it and the cylindrical structure at the top of the plumb bob each time the gear ring rotates the preset angle. 3…… X N ;

[0020] S3, control the linear mechanism to drive the laser rangefinder to descend, and then control the traction mechanism to lower the plumb bob until the cylindrical structure is aligned with the light emitting end of the laser rangefinder, and repeat step S2 to obtain the distances Y1, Y2, Y3, and Y4 between the laser rangefinder and the cylindrical structure at the top of the plumb bob after multiple measurements. 3…… Y N ;

[0021] S4, calculate X1-Y1, X2-Y2, X3-Y respectively 3…… X N -Y N The verticality of the pile foundation hole is calculated by dividing the maximum value obtained by the distance L of the plumb bob, where X N -Y N It represents the difference between the distance between the laser rangefinder 7 and the cylindrical structure 501 at the top of the plumb bob 5 measured at two different heights.

[0022] Furthermore, after the ring gear rotates by a preset angle in step S2, after a preset time, when the plumb bob and the laser rangefinder are stable, the laser rangefinder is controlled to measure the distance between the laser rangefinder and the cylindrical structure at the top of the plumb bob.

[0023] The beneficial effects of the present invention are:

[0024] 1. The detection device and the detection method can automatically complete the verticality detection of the pile foundation hole, and there is no need to measure the distance between the plumb bob or hanging line and the side wall of the pile foundation hole during the detection process, which can avoid the pits on the side wall of the pile foundation hole affecting the measurement results.

[0025] 2. By driving the linear mechanism and the laser rangefinder to rotate through the first motor, the distance between the laser rangefinder and the plumb bob can be automatically measured in multiple orientations. The maximum calculated difference is divided by the distance the plumb bob is lowered, so that the verticality of the pile foundation hole can be calculated more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the overall structure of the device according to an embodiment of the present application.

[0027] Figure 2 This is an exploded view of the support plate and the balls in the device according to the embodiment of the present application.

[0028] Figure 3 It is a structural stereogram of part of the device according to an embodiment of the present application.

[0029] Figure 4 It is a side view of the device according to an embodiment of the present application.

[0030] Figure 5 for Figure 4 Enlarged view of part A in the middle.

[0031] Figure 6 It is a three-dimensional diagram of the connection structure between the first fixed plate and the push rod in the device of an embodiment of the present application.

[0032] Figure 7 It is a three-dimensional diagram of the internal structure of the first fixed disk in the device of an embodiment of the present application.

[0033] Reference numerals: support plate 1, first fixed plate 2, push rod 3, second fixed plate 4, plumb bob 5, traction mechanism 6, laser rangefinder 7, gear ring 8, connecting plate 9, connecting seat 101, arc groove 1011, ball 102, third through hole 103, circular cavity 201, second through hole 202, push ring 203, arc push block 204, second motor 205, first guide Guide column 206, vertical plate 301, limit ring 302, spring 303, first through hole 401, annular groove 402, cylindrical structure 501, suspension line 502, fixed shaft 601, third motor 602, support seat 603, linear mechanism 701, driving gear 801, first motor 802, limit gear 803, vertical rod 901, second guide column 902. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Example 1

[0036] This embodiment provides a construction engineering verticality detection device, such as Figure 1-Figure 7 As shown, it includes a support plate 1, a first fixed plate 2, a laser rangefinder 7, etc.

[0037] Specifically, a connecting seat 101 is provided at the bottom of the support plate 1, and an arc groove 1011 is opened at the bottom of the connecting seat 101, and a ball 102 is rotatably connected in the arc groove 1011; a plurality of push rods 3 are radially slidably provided on the first fixed plate 2, and the plurality of push rods 3 are synchronously moved along the radial direction of the first fixed plate 2, and the top surface of the first fixed plate 2 is connected to the bottom of the ball 102, and the center of the ball 102 is located in the axial direction of the first fixed plate 2, and a vertical plate 301 is provided at the outward end of the push rod 3; the second fixed plate 4 is coaxially arranged below the first fixed plate 2, and a first through hole 401 is coaxially opened on the second fixed plate 4, and a There is a suspension line 502, a plumb bob 5 is suspended at the bottom of the suspension line 502, the top of the plumb bob 5 is a cylindrical structure 501, and the top of the suspension line 502 is connected to a traction mechanism 6; a laser rangefinder 7 is arranged below the second fixed disk 4, and the laser rangefinder 7 is used to measure the distance between it and the cylindrical structure 501. The laser rangefinder 7 is hinged to the telescopic end of a linear mechanism 701, and the axial direction of the hinge is parallel to the tangential direction of the circumferential side of the second fixed disk 4, so that the direction of the light emitted by the laser rangefinder 7 when it is stationary is always perpendicular to the plumb bob 5 in the stationary state, and the telescopic direction of the telescopic end of the linear mechanism 701 is parallel to the axial direction of the second fixed disk 4.

[0038] In actual use, the detection device is fixed to the top of the pile foundation hole to be detected by the support plate 1, and the push rod 3 is controlled to be pushed out so that the vertical plate 301 abuts against the inner wall of the pile foundation hole. The vertical plate 301 will push the first fixed plate 2 to rotate until the axial direction is the same as the axial direction of the pile foundation hole. The ball 102 will rotate with the first fixed plate 2 and will not separate from the arc groove 1011. Then the laser rangefinder 7 is controlled to measure the distance between it and the cylindrical structure 501 at the top of the plumb bob 5, and the linear mechanism 701 is controlled to drive the laser rangefinder 7 to descend, and then the traction mechanism is controlled 6. Lower the plumb bob 5 to the cylindrical structure 501 and align it with the light emitting end of the laser rangefinder 7. Measure the distance between the laser rangefinder 7 and the cylindrical structure 501 at the top of the plumb bob 5 again, calculate the difference between the two measured distances, and then divide it by the distance L of the plumb bob 5 to get the verticality of the pile foundation hole. During the measurement process, if the pile foundation hole is tilted, the linear mechanism will also be in a tilted state. The laser rangefinder 7 will always remain in a vertical state due to its own gravity when it is stationary, so that the emitted light is horizontally directed to the plumb bob, realizing automatic distance measurement. When it is necessary to measure in multiple directions, it can be achieved by rotating the second fixed disk 4 to change the position of the laser rangefinder 7. By measuring the pile foundation hole in this way, there is no need to measure the distance between the plumb bob 5 or the hanging line 502 and the inner wall of the pile foundation hole, which can avoid the pits on the inner wall of the pile foundation hole from affecting the accuracy of the measurement data.

[0039] Preferably, see Figure 3 , Figure 4The second fixed disk 4 is provided with a coaxially rotating ring gear 8, the ring gear 8 is meshed with a driving gear 801, the driving gear 801 is connected to an output shaft of a first motor 802, and the linear mechanism 701 is fixed on the ring gear 8. When it is necessary to measure in multiple directions, the first motor 802 is controlled to drive the driving gear 801 to rotate, so that the linear mechanism 701 and the laser rangefinder 7 can be driven to rotate through the ring gear 8, and the second fixed disk 4 does not need to be rotated manually.

[0040] For details, see Figure 3 An annular groove 402 is provided on the second fixed disk 4, the ring gear 8 is an inner ring gear, the ring gear 8 is rotatably arranged in the annular groove 402, the driving gear 801 is meshedly connected in the ring gear 8, and a plurality of limiting gears 803 are meshedly connected in the ring gear 8, the limiting gear 803 is rotatably connected to the second fixed disk 4, and the ring gear 8 is fixed between the limiting gear 803 and the wall of the annular groove 402, which can improve the stability of the ring gear 8 during rotation.

[0041] For details, see Figure 6 , Figure 7 A circular cavity 201 is coaxially opened in the first fixed disk 2, and a plurality of second through holes 202 are opened in a circular array on the circumferential side of the first fixed disk 2, and the second through holes 202 extend into the circular cavity 201. A plurality of push rods 3 are respectively slidably arranged in the plurality of second through holes 202, and the inward ends of the push rods 3 extend into the circular cavity 201. A push ring 203 is coaxially arranged in the circular cavity 201, and a plurality of arc-shaped push blocks 204 are arranged in a circular array on the circumferential side of the push ring 203. The push ring 203 is connected to the output shaft of a second motor 205, and the second motor 205 is fixed below the first push ring 203. When the push ring 203 rotates by a preset angle, the plurality of arc-shaped push blocks 204 respectively abut against the plurality of push rods 3, and push the push rods 3 out a preset distance, so as to realize the synchronous pushing out of the plurality of push rods 3. Specifically, a connecting disk 9 is provided between the first fixed disk 2 and the second fixed disk 4, and the second motor 205 is provided between the first fixed disk 2 and the connecting disk 9. More specifically, the bottom of the connecting disk 9 is connected to the second fixed disk 4 through a vertical rod 901, which is used to support the second fixed disk 4 so that the suspension wire 502 can pass through the first through hole 401, thereby facilitating the retraction and extension of the suspension wire 502.

[0042] Preferably, see Figure 6 , a limit ring 302 is provided on the push rod 3, and the limit ring 302 is located on the outside of the first fixed disk 2. A spring 303 is sleeved on the push rod 3, one end of the spring 303 is connected to the limit ring 302, and the other end of the spring 303 is connected to the outer peripheral side of the first fixed disk 2. When the push rod 3 is pushed out by the arc-shaped push block 204, the spring 303 is in a stretched state. When the push ring 203 rotates to reset, the spring 303 will drive the push rod 3 to move inward to the reset state.

[0043] For details, see Figure 4The traction mechanism 6 includes a fixed shaft 601 and a third motor 602. The fixed shaft 601 is rotatably connected to a support seat 603. The support seat 603 is fixed to the top of the support plate 1. The top of the suspension wire 502 is connected to the fixed shaft 601. The support plate 1 is vertically provided with a third through hole 103. The suspension wire 502 is passed through the third through hole 103. The output shaft of the third motor 602 is connected to the fixed shaft 601. By controlling the third motor 602 to drive the fixed shaft 601 to rotate, the suspension wire 502 can be retracted and released, thereby controlling the lowering distance of the plumb bob 5. For more details, refer to Figure 5 , Figure 6 A first guide column 206 is laterally provided on the side of the first fixed plate 2, and a second guide column 902 is laterally provided on the connecting plate 9. The first guide column 206 is parallel to the second guide column 902. The suspension line 502 bypasses the first guide column 206 and the second guide column 902 and is connected to the plumb bob 5. In this way, the suspension line 502 can be prevented from being deflected during the process of being lowered or pulled up, thereby improving the stability of the suspension line 502 during the process of being pulled up or lowered.

[0044] Example 2

[0045] This embodiment provides a method for detecting verticality of a construction project, which is implemented by using a device for detecting verticality of a construction project in Embodiment 1. The specific steps include:

[0046] S1, fix the detection device to the top of the pile foundation hole to be detected by the support plate 1, control the push rod 3 to push out, make the vertical plate 301 abut against the inner wall of the pile foundation hole, and push the first fixed plate 2 until the axial direction is the same as the axial direction of the pile foundation hole;

[0047] S2, control the laser rangefinder 7 to measure the distance X1 between it and the cylindrical structure 501 at the top of the plumb bob 5, then control the first motor 802 to drive the gear ring 8 to rotate the preset angle multiple times until it is reset, and control the laser rangefinder 7 to measure the distances X2, X3, and X4 between the gear ring 8 and the cylindrical structure 501 at the top of the plumb bob 5 each time the gear ring 8 rotates the preset angle. 3…… X N ;

[0048] S3, control the linear mechanism 701 to drive the laser rangefinder 7 to descend, and then control the traction mechanism 6 to lower the plumb bob 5 until the cylindrical structure 501 is aligned with the light emitting end of the laser rangefinder 7, and repeat step S2 to obtain the distances Y1, Y2, Y3, and Y4 between the laser rangefinder 7 and the cylindrical structure 501 at the top of the plumb bob 5 after multiple measurements. 3…… Y N ;

[0049] S4, calculate X1-Y1, X2-Y2, X3-Y respectively 3…… X N -Y NThe verticality of the pile foundation hole is calculated by dividing the maximum value obtained by the distance L of the plumb bob 5, where X N -Y N It represents the difference between the distance between the laser rangefinder 7 and the cylindrical structure 501 at the top of the plumb bob 5 measured at two different heights.

[0050] Specifically, in the above step S2, after the ring gear 8 rotates a preset angle and a preset time passes, when the plumb bob 5 and the laser rangefinder 7 are stable, the laser rangefinder 7 is controlled to measure the distance between it and the cylindrical structure 501 on the top of the plumb bob 5, so as to avoid measurement when the plumb bob 5 swings due to vibration generated during the transmission process of the ring gear 8, thereby improving the accuracy of the measured data.

[0051] The above description is only a preferred embodiment of the present invention, and is not intended to be the only one or to limit the present invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A construction engineering verticality detection device, characterized in that: include: A support plate (1) is provided with a connecting seat (101) at the bottom thereof, an arc-shaped groove (1011) is provided at the bottom of the connecting seat (101), and a ball (102) is rotatably connected in the arc-shaped groove (1011); A first fixed disk (2) is provided with a plurality of push rods (3) which are radially slidable thereon. The plurality of push rods (3) are arranged to move synchronously along the radial direction of the first fixed disk (2). The top surface of the first fixed disk (2) is connected to the bottom of the ball (102). The center of the ball (102) is located in the axial direction of the first fixed disk (2). A vertical plate (301) is provided at one end of the push rods (3) facing outwards. The second fixing plate (4) is coaxially arranged below the first fixing plate (2); a first through hole (401) is coaxially opened on the second fixing plate (4); a suspension wire (502) is passed through the first through hole (401); a plumb bob (5) is suspended at the bottom of the suspension wire (502); the top of the plumb bob (5) is a cylindrical structure (501); the top of the suspension wire (502) is connected to a traction mechanism (6); A laser rangefinder (7) is disposed below the second fixed disk (4). The laser rangefinder (7) is used to measure the distance between the laser rangefinder (7) and the cylindrical structure (501). The laser rangefinder (7) is hinged to the telescopic end of a linear mechanism (701). The axis of the hinge is parallel to the tangent direction of the circumference of the second fixed disk (4). The laser rangefinder (7) is used to ensure that the direction of the light emitted by the laser rangefinder (7) in a stationary state is always perpendicular to the plumb bob (5) in a stationary state. The telescopic direction of the telescopic end of the linear mechanism (701) is parallel to the axis of the second fixed disk (4). A gear ring (8) is coaxially rotatably provided on the second fixed disk (4), the gear ring (8) is meshingly connected with a driving gear (801), the driving gear (801) is connected to an output shaft of a first motor (802), and the linear mechanism (701) is fixed on the gear ring (8); A circular cavity (201) is coaxially provided in the first fixed disk (2), a plurality of second through holes (202) are provided in a circumferential array on the circumferential side of the first fixed disk (2), the second through holes (202) extend into the circular cavity (201), a plurality of push rods (3) are respectively slidably provided in the plurality of second through holes (202), the inward ends of the push rods (3) all extend into the circular cavity (201), a push ring (203) is coaxially provided in the circular cavity (201), a plurality of arc-shaped push blocks (204) are provided in a circumferential array on the circumferential side of the push ring (203), and the push ring (203) is connected to a second motor (205). The output shaft is connected, the second motor (205) is fixed below the first push ring (203), when the push ring (203) rotates at a preset angle, the plurality of arc-shaped push blocks (204) respectively contact the plurality of push rods (3), and push the push rods (3) out a preset distance; the second fixed disk (4) is provided with an annular groove (402), the gear ring (8) is an internal gear ring, the gear ring (8) is rotatably arranged in the annular groove (402), the driving gear (801) is meshedly connected in the gear ring (8), and the gear ring (8) is meshedly connected with a plurality of limit gears (803), the limit gears (803) are rotatably connected to the second fixed disk (4).

2. A construction engineering verticality detection device according to claim 1, characterized in that: A limiting ring (302) is provided on each push rod (3), the limiting ring (302) being located outside the first fixed disk (2), a spring (303) is sleeved on the push rod (3), one end of the spring (303) is connected to the limiting ring (302), and the other end of the spring (303) is connected to the outer peripheral side of the first fixed disk (2), and when the push rod (3) is pushed out by the arc-shaped push block (204), the spring (303) is in a stretched state.

3. A construction engineering verticality detection device according to claim 1, characterized in that: A connecting disk (9) is provided between the first fixing disk (2) and the second fixing disk (4), the second motor (205) is provided between the first fixing disk (2) and the connecting disk (9), and the bottom of the connecting disk (9) is connected to the second fixing disk (4) via a vertical rod (901).

4. A construction engineering verticality detection device according to claim 3, characterized in that: The traction mechanism (6) comprises a fixed shaft (601) and a third motor (602); the fixed shaft (601) is rotatably connected to a support seat (603); the support seat (603) is fixed to the top of the support plate (1); the top of the suspension wire (502) is connected to the fixed shaft (601); a third through hole (103) is vertically opened on the support plate (1); the suspension wire (502) is passed through the third through hole (103); and the output shaft of the third motor (602) is connected to the fixed shaft (601).

5. A construction engineering verticality detection device according to claim 4, characterized in that: A first guide column (206) is transversely arranged on the circumference of the first fixed disk (2), a second guide column (902) is transversely arranged on the connecting disk (9), the first guide column (206) is parallel to the second guide column (902), and the suspension line (502) passes around the first guide column (206) and the second guide column (902) and is connected to the plumb bob (5).

6. A method for detecting verticality of a construction project, characterized in that: The method is implemented by using a construction engineering verticality detection device as described in any one of claims 2 to 5, and the specific steps include: S1, fixing the detection device to the top of the pile foundation hole to be detected by means of a support plate (1), controlling the push rod (3) to be pushed out, so that the vertical plate (301) abuts against the inner wall of the pile foundation hole, and pushing the first fixing plate (2) until the axial direction is the same as the axial direction of the pile foundation hole; S2, controlling the laser rangefinder (7) to measure the distance X1 between it and the cylindrical structure (501) at the top of the plumb bob (5), then controlling the first motor (802) to drive the gear ring (8) to rotate a preset angle multiple times until it is reset, and controlling the laser rangefinder (7) to measure the distances X2 and X3 between the gear ring (8) and the cylindrical structure (501) at the top of the plumb bob (5) each time the gear ring (8) rotates the preset angle. 3…… X N ; S3, control the linear mechanism (701) to drive the laser rangefinder (7) to descend, then control the traction mechanism (6) to lower the plumb bob (5) to the cylindrical structure (501) to align with the light emitting end of the laser rangefinder (7), repeat step S2, and obtain the distances Y1, Y2, Y3, and Y4 between the laser rangefinder (7) and the cylindrical structure (501) at the top of the plumb bob (5) after multiple measurements. 3…… Y N ; S4, calculate X1-Y1, X2-Y2, X3-Y respectively 3…… X N -Y N The verticality of the pile foundation hole is calculated by dividing the maximum value obtained by the distance L of the plumb bob (5) lowered, where X N -Y N It represents the difference between the distance between the laser rangefinder (7) and the cylindrical structure (501) at the top of the plumb bob (5) measured at two different heights.

7. A construction engineering verticality detection method according to claim 6, characterized in that: In step S2, after the ring gear (8) rotates by a preset angle and a preset time has passed, after the plumb bob (5) and the laser rangefinder (7) are stabilized, the laser rangefinder (7) is controlled to measure the distance between it and the cylindrical structure (501) at the top of the plumb bob (5).

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