Multifunctional BIM building surveying pole

Abstract

The application relates to the field of measurement, in particular to a multifunctional BIM building surveying staff, which comprises a staff main body, a pointed end arranged at the bottom of the staff main body, three containing grooves arranged on the staff main body, and bevels arranged in the containing grooves; a supporting mechanism, which comprises rotating plates arranged in the containing grooves and used for supporting the staff main body; a locking mechanism arranged on the side wall of the staff main body and used for preventing the rotating plates from rotating automatically; a leveling mechanism arranged at one end of the rotating plate and used for leveling the staff main body; and a stabilizing mechanism arranged on the side wall of the rotating plate and used for reinforcing two adjacent rotating plates to keep the whole stable, the application has the functions of forming a tripod, inserting the staff into the ground and placing the staff on the ground, strengthening the stability of the formed tripod and the like, so that the staff is more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of measurement, and in particular to a multifunctional BIM building measurement benchmark. Background Technology

[0002] BIM, or Building Information Modeling, requires the measurement of various building data during its construction. In addition to using various measuring instruments, a benchmark is also needed for assistance. Typically, one person holds the benchmark for positioning while another person observes and measures using a measuring instrument.

[0003] During use, since the marker poles generally cannot be erected independently, two workers are needed to assist in measurement, which undoubtedly increases labor costs. Although a few people use external tripods for assistance, they first place the tripod stably and then use clamps to hold the marker pole in place, saving manpower by using the tripod. However, this method has a small support point for the tripod and is supported on the side of the marker pole, resulting in poor support. In addition, the tripod and marker pole need to be carried each time, which is inconvenient. Therefore, a multi-functional BIM building measurement marker pole is needed to solve the above problems. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a marker body, a pointed end at the bottom of the marker body, three receiving grooves on the marker body, and an inclined side within the receiving grooves; a support mechanism, including a rotating plate within the receiving grooves, the rotating plate rotating to support the marker body; a locking mechanism on the side wall of the marker body to prevent the rotating plate from rotating automatically; a leveling mechanism at one end of the rotating plate for leveling the marker body; and a stabilizing mechanism on the side wall of the rotating plate to reinforce adjacent rotating plates to maintain overall stability.

[0005] As a preferred embodiment of the multifunctional BIM building surveying benchmark of the present invention, the support mechanism further includes a rotating shaft rotatably connected in the receiving groove, the rotating shaft being fixedly connected to the rotating plate, and a torsion spring being provided on the rotating shaft.

[0006] As a preferred embodiment of the multifunctional BIM building surveying benchmark of the present invention, the locking mechanism includes a threaded sleeve fixedly connected to the main body of the benchmark, a ring is provided on the outer side of the rotating plate, a threaded ring that mates with the threaded sleeve is fixedly connected to the ring, and a protrusion that mates with the ring is provided at the lower end of the benchmark.

[0007] As a preferred embodiment of the multifunctional BIM building surveying benchmark of the present invention, the leveling mechanism includes an installation port provided on a rotating plate, an installation shaft rotatably connected in the installation port, an installation block fixedly connected to the installation shaft, a threaded rod threadedly connected to the installation block, a turntable fixedly connected to the threaded rod, an expansion groove that mates with the turntable provided in the receiving groove, and an anti-slip rubber pad rotatably connected to the end of the threaded rod through the installation block.

[0008] As a preferred embodiment of the multifunctional BIM building surveying benchmark of the present invention, the mounting block is provided with a guide to prevent the anti-slip rubber pad from rotating; the guide includes two square grooves set on the mounting block, and a square strip that cooperates with the square grooves is fixedly connected to the anti-slip rubber pad.

[0009] As a preferred embodiment of the multifunctional BIM building surveying benchmark of the present invention, the rotating plate is provided with a transmission component that provides power for the rotation of the mounting block; the transmission component includes a T-shaped groove disposed on the rotating plate, one end of the T-shaped groove penetrating the rotating plate, a sliding plate slidably connected in the T-shaped groove, a through opening communicating with the T-shaped groove, a first toothed plate fixed to the sliding plate slidably connected in the through opening, a first gear meshing with the first toothed plate fixedly connected to the mounting shaft, the sliding plate being elastically connected to the inner wall of the T-shaped groove by a first spring, a transmission plate fixed to the sliding plate being slidably connected in the T-shaped groove, the transmission plate having an arc edge, and an arc-shaped groove cooperating with the transmission plate being provided in the receiving groove.

[0010] As a preferred embodiment of the multifunctional BIM building surveying benchmark of the present invention, the distance of the arc-shaped groove from the rotating axis decreases sequentially in a counterclockwise direction along the rotating axis.

[0011] As a preferred embodiment of the multifunctional BIM building surveying benchmark of the present invention, the stabilizing mechanism includes two bearing grooves disposed on two side walls of the rotating plate, each bearing groove being rotatably connected to a bearing shaft, an extension block being fixedly connected to the bearing shaft, a support shaft being rotatably connected to the extension block, and an arc-shaped plate being fixedly connected to the support shaft. The arc-shaped plates on two adjacent rotating plates cooperate with each other, and a sliding sleeve for limiting the movement between the two arc-shaped plates is slidably connected to the arc-shaped plate.

[0012] As a preferred embodiment of the multifunctional BIM building surveying benchmark of the present invention, the bearing groove is provided with a gear component that provides power for the rotation of the bearing shaft; the gear component includes a second gear fixedly connected to the bearing shaft; the T-shaped groove is connected to an L-shaped groove that communicates with the bearing groove; an L-shaped plate fixed to the transmission plate is slidably connected in the L-shaped groove; and a second gear plate that cooperates with the second gear is fixedly connected on the L-shaped plate.

[0013] As a preferred embodiment of the multifunctional BIM building surveying benchmark of the present invention, the bearing groove is provided with a pusher to provide power for the rotation of the support shaft; the pusher includes a strip-shaped opening through the rotating plate in the L-shaped groove, the support shaft is provided with an arc-shaped guide groove, an L-shaped push block is slidably connected in the strip-shaped opening, a lever is fixedly connected to the push block, a slit edge is provided on the push block, a top block that cooperates with the slit edge is fixedly connected to the L-shaped plate, the push block is elastically connected to the inner wall of the L-shaped groove through a second spring, and a support plate for supporting the push block is provided in the L-shaped groove.

[0014] The beneficial effects of the multifunctional BIM building surveying benchmark of the present invention:

[0015] 1. By setting up a support mechanism, three rotating plates are provided on the side wall of the main body of the marker, which can rotate to form a tripod. No external tripod is needed, making it easy to carry. Moreover, the center of the tripod is collinear with the center of the main body of the marker, resulting in better stability.

[0016] 2. By setting a locking mechanism, when the rotating plate does not need to be unfolded to form a tripod, the rotating plate can be limited by the engagement of the threaded ring and the threaded sleeve, so that the main body of the marker can be inserted into the ground for use, thus expanding the application scenarios.

[0017] 3. By setting up a leveling mechanism, after the rotating plate is unfolded, the anti-slip rubber pad can be automatically rotated, so that the bottom of the anti-slip rubber pad contacts the ground, increasing the contact area and providing better support. Furthermore, by rotating the threaded rod, the entire system can be leveled, enhancing the accuracy of the measurement.

[0018] By setting up a stabilizing mechanism, after the rotating plate unfolds, two arc-shaped plates can also unfold between two adjacent rotating plates. The two arc-shaped plates are locked by a sliding sleeve, which is equivalent to forming a reinforcing rib between the two arc-shaped plates, further enhancing the stability of the tripod formed by the rotating plate.

[0019] In summary, this device has multiple functions, including tripod formation, dual-purpose function of insertion into the ground and placement on the ground, and enhancing the stability of the formed tripod. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the external structure of a multifunctional BIM building surveying benchmark.

[0022] Figure 2 An exploded view of the threaded ring of a multi-functional BIM building surveying benchmark.

[0023] Figure 3 This is a schematic diagram of the main sectional structure of a multifunctional BIM building surveying benchmark.

[0024] Figure 4 This is a schematic diagram of the unfolded structure of a rotating plate for a multifunctional BIM building surveying benchmark.

[0025] Figure 5 A schematic diagram of the exploded structure of the anti-slip rubber pad for a multi-functional BIM building surveying benchmark.

[0026] Figure 6 A schematic diagram showing the incomplete unfolding of the curved plate of a multifunctional BIM building surveying benchmark.

[0027] Figure 7 for Figure 6 An enlarged schematic diagram of the structure at point A.

[0028] Figure 8 This is a schematic diagram of the sectional structure of a rotating plate for a multifunctional BIM building surveying benchmark.

[0029] Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point B.

[0030] Figure 10 This is a schematic diagram of the external structure of the gear teeth of a multifunctional BIM building surveying benchmark.

[0031] In the diagram: 10. Main body of the marker; 11. Tip; 12. Receiving groove; 13. Bevel; 21. Rotating plate; 22. Rotating shaft; 23. Torsion spring; 31. Threaded sleeve; 32. Ring; 33. Threaded ring; 34. Protrusion; 41. Mounting port; 42. Mounting shaft; 43. Mounting block; 44. Threaded rod; 45. Expansion groove; 46. Anti-slip rubber pad; 47. Guide component; 471. Square groove; 472. Square strip; 48. Transmission component; 481. T-slot; 482. Slide plate; 483. First toothed plate; 484. 485. First gear; 486. First spring; 487. Transmission plate; 488. Arc edge; 489. Arc groove; 51. Bearing groove; 52. Bearing shaft; 53. Extension block; 54. Support shaft; 55. Arc plate; 56. Sliding sleeve; 57. Gear tooth; 571. Second gear; 572. L-shaped groove; 573. L-shaped plate; 574. Second gear plate; 58. Pushing component; 581. Strip opening; 582. Lever; 583. Guide groove; 584. Push block; 585. Top block; 586. Second spring; 587. Support plate. Detailed Implementation

[0032] To make the above-mentioned objectives, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Reference Figures 1-10 This invention provides a multifunctional BIM building surveying benchmark that can achieve multiple placement methods for the benchmark body 10. It includes the benchmark body 10, a pointed tip 11 at the bottom of the benchmark body 10, three receiving slots 12 on the benchmark body 10, and inclined sides 13 within the receiving slots 12; a support mechanism including a rotating plate 21 within the receiving slots 12, which rotates to support the benchmark body 10; and a locking mechanism on the side wall of the benchmark body 10 to prevent the rotating plate 21 from automatically locking. The system includes a rotation mechanism, a leveling mechanism located at one end of the rotating plate 21 for leveling the main body 10 of the marker, and a stabilizing mechanism located on the side wall of the rotating plate 21 to reinforce adjacent rotating plates 21 to maintain overall stability. The tip 11 of the main body 10 is made of metal to prevent damage when inserted into the ground. The rotating plate 21, in conjunction with the inclined side 13, can be positioned at its final downward position. The side wall of the main body 10 is also equipped with graduations to assist in measurement.

[0034] Furthermore, the support mechanism also includes a rotating shaft 22 rotatably connected in the receiving groove 12, the rotating shaft 22 being fixedly connected to the rotating plate 21, and a torsion spring 23 being provided on the rotating shaft 22; the locking mechanism includes a threaded sleeve 31 fixedly connected to the main body 10 of the marker, a ring 32 being provided on the outer side of the rotating plate 21, a threaded ring 33 that cooperates with the threaded sleeve 31 being fixedly connected on the ring 32, and a protrusion 34 that cooperates with the ring 32 being provided at the lower end of the marker.

[0035] It should be noted that when the rotating plate 21 is in the receiving groove 12, the torsion spring 23 is in a compressed state. When the ring 32 is downward, the three rotating plates 21 automatically unfold under the action of the torsion spring 23 without manual operation. The protrusion 34 can limit the ring 32 and prevent the ring 32 from separating from the main body 10 of the marker.

[0036] In use, in the initial state, the torsion spring 23 is compressed, the rotating plate 21 is in the receiving groove 12, the ring 32 abuts against the outer wall of the rotating plate 21 to prevent the rotating plate 21 from unfolding, and the threaded ring 33 cooperates with the threaded sleeve 31 to limit the ring 32. At this time, the marker body 10 is easy to move or insert into the ground for use. When the marker body 10 needs to be placed on the ground for use, simply rotate the ring 32 to separate the threaded ring 33 from the threaded sleeve 31. At this time, the ring 32 falls under the action of gravity until it abuts against the protrusion 34. It is worth noting that the protrusion 34 is located on the lower side of the receiving groove 12, so that when the ring 32 moves to the lowest position, it will not block the opening of the rotating plate 21.

[0037] As the ring 32 moves down, the rotating shaft 22 rotates under the action of the torsion spring 23, causing the rotating plate 21 to rotate, thus unfolding the three rotating plates 21. When the rotating plate 21 abuts against the inclined side 13 inside the receiving groove 12, the three rotating plates 21 form a tripod to support the pole. At this time, the stability of the pole body 10 can be maintained without a person holding it.

[0038] Reference Figures 1 to 8 This invention provides a multi-functional leveling mechanism for BIM building surveying poles, solving the problems of how to increase the support surface and how to level the pole body 10 after it is supported by three rotating plates 21. It includes an installation port 41 on the rotating plate 21, a mounting shaft 42 rotatably connected within the installation port 41, an installation block 43 fixedly connected to the mounting shaft 42, a threaded rod 44 threadedly connected to the installation block 43, a turntable fixedly connected to the threaded rod 44, an expansion groove 45 that mates with the turntable in the receiving groove 12, and an anti-slip rubber pad 46 rotatably connected to the end of the threaded rod 44 through the installation block 43. A guide 47 is provided on the installation block 43 to prevent the anti-slip rubber pad 46 from rotating; the guide 47 includes two square grooves 471 on the installation block 43, and a square strip 472 that mates with the square grooves 471 is fixedly connected to the anti-slip rubber pad 46; a transmission component 48 is provided within the rotating plate 21 to provide power for the rotation of the installation block 43.

[0039] The transmission component 48 includes a T-shaped groove 481 disposed on the rotating plate 21. One end of the T-shaped groove 481 passes through the rotating plate 21. A sliding plate 482 is slidably connected inside the T-shaped groove 481. A through-hole is provided on the T-shaped groove 481. A first toothed plate 483 fixed to the sliding plate 482 is slidably connected inside the through-hole. A first gear 484 meshing with the first toothed plate 483 is fixedly connected to the mounting shaft 42. The sliding plate 482 is elastically connected to the inner wall of the T-shaped groove 481 by a first spring 485. A transmission plate 486 fixed to the sliding plate 482 is slidably connected inside the T-shaped groove 481. The transmission plate 486 is provided with an arc edge 487. An arc groove 488 that mates with the transmission plate 486 is provided in the receiving groove 12. The distance between the arc groove 488 and the rotating shaft 22 decreases sequentially in the counterclockwise direction along the rotating shaft 22.

[0040] Specifically, the anti-slip rubber pad 46 increases the support surface, making the support more stable. The square strip 472 and square groove 471 prevent the anti-slip rubber pad 46 from rotating together when the threaded rod 44 rotates, ensuring that the anti-slip rubber pad 46 can only slide. The moving length of the first toothed plate 483 is limited to prevent the first toothed plate 483 from hitting the ground and becoming unable to move. The arc edge 487 prevents the transmission plate 486 from getting stuck when it deflects.

[0041] During use, as the rotating plate 21 rotates, it drives the transmission plate 486 to rotate around the rotating shaft 22. During this process, the transmission plate 486 continuously engages with the arc-shaped groove 488. Since the distance between the arc-shaped groove 488 and the rotating shaft 22 decreases counterclockwise along the shaft, the rotation of the rotating plate 21 causes the transmission plate 486 to move towards the mounting block 43, which in turn causes the sliding plate 482 to move towards the mounting block 43. This, in turn, moves the first toothed plate 483 towards the mounting block 43, pushing the first gear 484 to rotate. This causes the mounting shaft 42 to rotate, which in turn causes the mounting block 43 to rotate. When the rotating plate 21 abuts against the inclined side 13, the anti-slip rubber pad 46 just... To ensure the target is parallel to the ground, place the target body 10 on the ground, supported by three anti-slip rubber pads 46. If unevenness is found, simply rotate the turntable to rotate the threaded rod 44, adjusting the distance between the anti-slip rubber pads 46 and the mounting block 43, thereby raising one side to achieve leveling. It is worth noting that previously, only the edge of the tilted rotating plate 21 was in contact with the ground, resulting in a small contact area. Now, the entire anti-slip rubber pad 46 is in contact with the ground, increasing the contact area and improving stability. It is also worth noting that after the rotating plate 21 is unfolded, the centers of the three rotating plates 21 are collinear with the center of the target body 10, unlike the case where the tripod is on the side. This method provides better support.

[0042] Reference Figures 1-10 This invention provides a stabilizing mechanism for multifunctional BIM building surveying benchmarks, solving the problem of how to enhance support stability. It includes two bearing grooves 51 on the two side walls of a rotating plate 21, each bearing groove 51 rotatably connected to a bearing shaft 52. An extension block 53 is fixedly connected to the bearing shaft 52, and a support shaft 54 ​​is rotatably connected to the extension block 53. An arc-shaped plate 55 is fixedly connected to the support shaft 54. The arc-shaped plates 55 on adjacent rotating plates 21 cooperate with each other, and a sliding sleeve 56 for limiting the movement between the two arc-shaped plates 55 is slidably connected to the arc-shaped plates 55. Gear teeth 57 are provided within the bearing grooves 51 to provide power for the rotation of the bearing shafts 52.

[0043] The gear component 57 includes a second gear 571 fixedly connected to the bearing shaft 52. An L-shaped groove 572 communicating with the bearing groove 51 is provided on the T-shaped groove 481. An L-shaped plate 573 fixed to the transmission plate 486 is slidably connected in the L-shaped groove 572. A second gear plate 574 cooperating with the second gear 571 is fixedly connected on the L-shaped plate 573. A pusher 58 providing power for the rotation of the support shaft 54 ​​is provided in the bearing groove 51.

[0044] The pusher 58 includes a strip-shaped opening 581 that passes through the rotating plate 21 and is disposed in the L-shaped groove 572. The support shaft 54 ​​is provided with an arc-shaped guide groove 583. An L-shaped push block 584 is slidably connected in the strip-shaped opening 581. A lever 582 is fixedly connected to the push block 584. The push block 584 is provided with a cut edge. A top block 585 that cooperates with the cut edge is fixedly connected to the L-shaped plate 573. The push block 584 is elastically connected to the inner wall of the L-shaped groove 572 through a second spring 586. A support plate 587 that supports the push block 584 is provided in the L-shaped groove 572.

[0045] Specifically, in the initial state, the arc-shaped plate 55 is located in the bearing groove 51. When the bearing groove 51 is completely misaligned with the receiving groove 12, the second toothed plate 574 will mesh with the gear, thereby preventing the arc-shaped plate 55 from jamming against the inner wall of the receiving groove 12. Here, the end of the second toothed plate 574 near the rotating shaft 22 is not provided with meshing teeth, so when the bearing shaft 52 rotates to the required position, there are no meshing teeth on the second toothed plate 574 in contact with the second gear 571, thereby avoiding the phenomenon of the lever 582 separating from the guide groove 583 when the support shaft 54 ​​is rotated.

[0046] During use, when the transmission plate 486 moves, it also drives the L-shaped plate 573 to move, causing the second toothed plate 574 to move. When the rotating plate 21 rotates, causing the receiving groove 12 and the bearing groove 51 to misalign, the second toothed plate 574 meshes with the second gear 571. At this time, the top block 585 does not abut against the push block 584. As the transmission plate 486 moves, the second toothed plate 574 drives the second gear 571 to rotate, thereby rotating the bearing shaft 52, causing the extension block 53 to rotate around the bearing shaft 52, and the support shaft 54 ​​to rotate around the bearing shaft 52, causing the arc-shaped plate 55 to move to the outside of the bearing groove 51. When the arc-shaped plate 55 moves to the required position, there are no meshing teeth on the second toothed plate 574 that mesh with the second gear 571. At this time, the top block 585 abuts against the tangential edge of the push block 584. Then the transmission plate 486 continues to move. Since there are no meshing teeth that mesh with the second gear 571 (at this time, the state of the arc-shaped plate 55 is as follows...), Figure 6 As shown), the bearing shaft 52 does not rotate. At this time, the top block 585 pushes the push block 584 to move, which drives the lever 582 to move. The lever 582 cooperates with the guide groove 583 to drive the support shaft 54 ​​to rotate, so that the arc plate 55 deflects until the arc plates 55 on the two adjacent rotating plates 21 are close together. Here, in order to prevent the arc plates 55 on the two adjacent rotating plates 21 from jamming each other during the movement, their length will be shortened. Then, the sliding sleeve 56 on the arc plate 55 is moved to limit the arc plates 55 on the two adjacent rotating plates 21, which is equivalent to adding a reinforcing rib between the three rotating plates 21 to further maintain the overall stability.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multifunctional BIM building surveying benchmark, characterized in that: include, The marker body (10) has a pointed tip (11) at the bottom of the marker body (10), three receiving grooves (12) on the marker body (10), and a bevel (13) in the receiving grooves (12). The support mechanism includes a rotating plate (21) disposed in a receiving groove (12), the rotating plate (21) rotating to support the main body (10) of the marker; A locking mechanism is provided on the side wall of the main body (10) of the marker, which prevents the rotating plate (21) from rotating automatically; A leveling mechanism is provided at one end of the rotating plate (21) for leveling the main body (10) of the pole. The leveling mechanism includes an installation port (41) on the rotating plate (21), an installation shaft (42) is rotatably connected in the installation port (41), an installation block (43) is fixedly connected on the installation shaft (42), a threaded rod (44) is threadedly connected on the installation block (43), a turntable is fixedly connected on the threaded rod (44), an expansion groove (45) that cooperates with the turntable is provided in the receiving groove (12), and the end of the threaded rod (44) passes through the installation block (43) and is rotatably connected to an anti-slip rubber pad (46). A stabilizing mechanism is provided on the side wall of the rotating plate (21) to reinforce the two adjacent rotating plates (21) to maintain overall stability.

2. The multifunctional BIM building surveying benchmark as described in claim 1, characterized in that: The support mechanism also includes a rotating shaft (22) rotatably connected in the receiving groove (12), the rotating shaft (22) being fixedly connected to the rotating plate (21), and a torsion spring (23) being provided on the rotating shaft (22).

3. The multifunctional BIM building surveying benchmark as described in claim 2, characterized in that: The locking mechanism includes a threaded sleeve (31) fixedly connected to the main body (10) of the pole, a ring (32) is provided on the outer side of the rotating plate (21), a threaded ring (33) that cooperates with the threaded sleeve (31) is fixedly connected on the ring (32), and a protrusion (34) that cooperates with the ring (32) is provided at the lower end of the pole.

4. The multifunctional BIM building surveying benchmark as described in claim 1, characterized in that: The mounting block (43) is provided with a guide (47) to prevent the anti-slip rubber pad (46) from rotating. The guide (47) includes two square grooves (471) provided on the mounting block (43), and a square strip (472) that cooperates with the square grooves (471) is fixedly connected to the anti-slip rubber pad (46).

5. The multifunctional BIM building surveying benchmark as described in claim 1, characterized in that: The rotating plate (21) is provided with a transmission component (48) that provides power for the rotation of the mounting block (43); The transmission component (48) includes a T-shaped groove (481) disposed on a rotating plate (21), one end of the T-shaped groove (481) penetrating the rotating plate (21), a sliding plate (482) slidably connected inside the T-shaped groove (481), a through opening communicating with the T-shaped groove (481), a first toothed plate (483) fixed to the sliding plate (482) slidably connected inside the through opening, a first gear (484) meshing with the first toothed plate (483) fixedly connected to the mounting shaft (42), the sliding plate (482) being elastically connected to the inner wall of the T-shaped groove (481) by a first spring (485), a transmission plate (486) fixed to the sliding plate (482) slidably connected inside the T-shaped groove (481), an arc edge (487) provided on the transmission plate (486), and an arc groove (488) cooperating with the transmission plate (486) provided in the receiving groove (12).

6. The multifunctional BIM building surveying benchmark as described in claim 5, characterized in that: The distance between the arc groove (488) and the rotating shaft (22) decreases sequentially in a counterclockwise direction along the rotating shaft (22).

7. The multifunctional BIM building surveying benchmark as described in claim 5 or 6, characterized in that: The stabilizing mechanism includes two bearing grooves (51) disposed on two side walls of the rotating plate (21). Each bearing groove (51) is rotatably connected to a bearing shaft (52). An extension block (53) is fixedly connected to the bearing shaft (52). A support shaft (54) is rotatably connected to the extension block (53). An arc plate (55) is fixedly connected to the support shaft (54). The arc plates (55) on two adjacent rotating plates (21) cooperate with each other. A sliding sleeve (56) for limiting the movement between the two arc plates (55) is slidably connected to the arc plate (55).

8. The multifunctional BIM building surveying benchmark as described in claim 7, characterized in that: The bearing groove (51) is provided with a gear (57) that provides power for the rotation of the bearing shaft (52); The gear component (57) includes a second gear (571) fixedly connected to the bearing shaft (52). The T-shaped groove (481) is connected to an L-shaped groove (572) that communicates with the bearing groove (51). An L-shaped plate (573) fixed to the transmission plate (486) is slidably connected in the L-shaped groove (572). A second gear plate (574) that cooperates with the second gear (571) is fixedly connected on the L-shaped plate (573).

9. The multifunctional BIM building surveying benchmark as described in claim 8, characterized in that: The bearing groove (51) is provided with a pusher (58) that provides power for the rotation of the support shaft (54); The pusher (58) includes a strip-shaped opening (581) through the rotating plate (21) in the L-shaped groove (572), an arc-shaped guide groove (583) on the support shaft (54), an L-shaped push block (584) slidably connected in the strip-shaped opening (581), a lever (582) fixedly connected to the push block (584), a cut edge on the push block (584), a top block (585) that cooperates with the cut edge fixedly connected to the L-shaped plate (573), the push block (584) being elastically connected to the inner wall of the L-shaped groove (572) by a second spring (586), and a support plate (587) for supporting the push block (584) in the L-shaped groove (572).

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