A BIM-based assembly prefabricated structure positioning processing device and method

Abstract

The application discloses a kind of based on BIM's assembly prefabricated structure positioning processing device and method, it is related to the field of fabricated building construction technology.In the application: including counterweight chassis, positioning support component, low-position support piece, lifting rotating piece, mark positioning piece, positioning disc and the like structural assembly.The application is initialized and is inserted and positioned by positioning disc first in the column that position has been fixed immovably hoist base protruding steel bar, then hoist rotating piece, positioning disc are lifted, and " high position " insertion is cooperated with the fabricated column above hoist, simultaneously using mark positioning piece and fabricated column hoist are positioned and cooperated, and column hoist alignment mark is marked, in the process that fabricated column hoist is approached column hoist base and goes down, secondary rotation separates out positioning disc, and using mark positioning piece that is adjusted in advance and fabricated column hoist side column hoist alignment mark are in real time dynamic cooperation, to safely and accurately complete the assembly of fabricated column hoist and column hoist base.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building construction technology, and in particular to a BIM-based prefabricated structure positioning and processing device and method. Background Technology

[0002] Prefabricated buildings are a widely used building structure in modern construction. With the widespread application of BIM technology in various stages of building projects, prefabricated buildings have achieved faster and higher-quality development in all aspects from design and production to construction.

[0003] In prefabricated building structures, when assembling precast concrete column cranes with column crane bases pre-completed on the foundation, the precast steel reinforcement structure of the column crane base needs to be aligned and inserted into the pre-reserved insertion holes on the bottom side of the prefabricated column crane. However, the protruding length of the precast steel reinforcement structure of the column crane base is limited, and when encountering some large prefabricated column cranes, there are many steel reinforcements and insertion holes that need to be aligned at the same time, making it difficult for the prefabricated column crane to descend and align with the column crane base.

[0004] To address the aforementioned issues, the existing methods generally involve workers lying on the ground near the column base to observe the connection and fit between the precast steel reinforcement of the column base and the insertion holes on the bottom side of the prefabricated column, or using a conventional reflector to observe the connection and fit between the precast steel reinforcement of the column base and the insertion holes on the bottom side of the prefabricated column.

[0005] However, the above-mentioned observation and alignment method is too close to the construction position between the unstable prefabricated column crane and the column crane base, which may pose a safety hazard (the prefabricated column crane is suspended above by a basket and generally has no other safety protection. If there is a problem with the hoisting structure, the extremely heavy prefabricated column crane will be a great source of danger). Moreover, it is very inconvenient to align by observing at an angle. Several collisions during alignment may cause the precast steel bars of the column crane base to bend or the opening of the insertion hole on the bottom side of the prefabricated column crane to break.

[0006] The challenges of construction safety and precise alignment during the assembly of prefabricated column cranes and their bases have become difficult to address. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a BIM-based prefabricated assembly structure positioning processing device and method, so as to safely and accurately complete the assembly of prefabricated column cranes and column crane bases.

[0008] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention provides a BIM-based prefabricated assembly positioning and processing device, specifically comprising the following structure: Positioning support assembly: includes a lateral sliding plate, a fixed rod fixedly connected above the lateral sliding plate, and a rotating square rod rotatably mounted above the lateral sliding plate. An angle adjuster for adjusting the rotation angle of the rotating square rod is connected to the upper end of the fixed rod and the rotating square rod. A counterweight chassis is disposed below the lateral sliding plate, and the lateral sliding plate slides in conjunction with the counterweight chassis. A first fastener is disposed on the lateral sliding plate to fix its position on the counterweight chassis.

[0009] Low-position support component: includes a support frame and a support sliding groove formed in the periphery of the support frame. The support frame is slidably mounted on the rotating square rod through the support sliding groove. A second fastener is installed on one side of the support frame to fix the position of the support frame on the rotating square rod.

[0010] The lifting and rotating component includes an inner ring body, a square through groove formed in the inner ring body, and an outer ring body rotatably mounted on the outer ring body. A third fastener is installed on the side of the outer ring body to fix its position on the rotating square rod. The lifting and rotating component is located above the low-position support component.

[0011] Positioning plate: includes a positioning plate fixedly connected to the outer ring body on one side, multiple lower alignment holes evenly opened on the bottom side of the positioning plate, and multiple upper alignment protrusions evenly distributed on the upper side of the positioning plate. Among them, the lower alignment holes are aligned with the protruding steel bars of the column hanger base, and the upper alignment protrusions are aligned with the assembly and installation grooves of the prefabricated column hanger. Each lower alignment hole has an independent upper alignment protrusion directly above it, and the upper alignment protrusion has a vertical groove in the tube body that is vertically connected to the lower alignment hole.

[0012] The marking and positioning component includes a positioning sliding frame, a positioning sliding groove formed in the inner circumference of the positioning sliding frame, a fixing screw tube installed on the ring side of the positioning sliding frame, and a transverse marking screw rod screwed onto the fixing screw tube. A fourth fastener for fixing the position of the positioning sliding frame on the rotating square rod is also installed on the ring side of the positioning sliding frame. The marking and positioning component is located above the lifting and rotating component.

[0013] As a preferred technical solution of the device of the present invention: a rotating shaft is installed on the upper side of the transverse sliding plate, and the lower end of the rotating square rod is connected to the rotating shaft.

[0014] As a preferred embodiment of the device of the present invention: the angle adjuster includes a threaded sleeve, a lower screw threaded to one side of the threaded sleeve, and an upper screw threaded to the other side of the threaded sleeve. The lower screw is movably connected to the upper end of the fixed rod, and the upper screw is movably connected to the upper end of the rotating square rod.

[0015] As a preferred technical solution of the device of the present invention: the inner wall of the threaded sleeve is provided with a continuous thread structure, and the thread direction of the lower screw is opposite to that of the upper screw.

[0016] As a preferred technical solution of the device of the present invention: a fixed connecting plate with reinforcing ribs is fixedly connected to the outer ring body, and the positioning plate is fixedly connected to the fixed connecting plate.

[0017] As a preferred technical solution of the device of the present invention: the outer ring side of the upper alignment convex tube is provided with an alignment ring surface that matches the size of the assembly and installation groove of the prefabricated column hanger, and an insertion inclined surface located above the alignment ring surface.

[0018] As a preferred technical solution of the device of the present invention: the supporting sliding groove and the positioning sliding groove are both vertical square grooves, and the transverse marking screw is equipped with a hand-rotating structure.

[0019] This invention provides a BIM-based prefabricated assembly positioning processing device and method, comprising the following steps: S1. Place and fix the counterweight base plate next to the open space of the column crane base.

[0020] S2. Raise the lifting and rotating component along the rotating square bar until the positioning plate is higher than the highest point of the protruding steel bar of the column base.

[0021] S3. Rotate the outer ring of the lifting and rotating component to rotate the positioning plate to the top of the protruding steel bar of the column base, and use the low-position support component to support the lifting and rotating component at the current height position.

[0022] S4. Adjust the lateral position of the transverse sliding plate and adjust the tilt angle of the rotating square rod through the angle adjuster. At the same time, adjust the lower alignment hole of the positioning plate with the protruding steel bar directly below by rotating the outer ring of the lifting rotating component. Release the support of the lower support component on the lifting rotating component, insert the upper end of the protruding steel bar into the lower alignment hole of the positioning plate, and tighten the relative position of the outer ring and the inner ring through the third fastener.

[0023] S5. The prefabricated column crane is moved by a crane to a certain distance above the column crane base.

[0024] S6. Continue to raise the lifting and rotating parts and the positioning plate until the upper alignment protrusion of the positioning plate contacts the bottom surface of the prefabricated column crane.

[0025] S7. Adjust the position of the prefabricated column hanger until the upper alignment protrusion of the positioning plate is aligned with the assembly and installation groove on the bottom side of the prefabricated column hanger. Continue to raise the lifting and rotating parts and the positioning plate, insert the upper alignment protrusion of the positioning plate into the assembly and installation groove on the bottom side of the prefabricated column hanger, and use the low-position support to support the lifting and rotating parts.

[0026] S8. Adjust the position of the positioning sliding frame of the marking positioning component on the rotating square rod, and rotate the transverse marking screw until the front end of the transverse marking screw contacts the appropriate position on the side of the assembled column crane. Use a marker to draw the column crane alignment mark around the contact position.

[0027] S9. Release the support of the lower support component on the lifting and rotating component. The prefabricated column crane is slowly lowered from the frame. At the same time, the lifting and rotating component and the positioning plate are lowered simultaneously. When the distance between the bottom side of the prefabricated column crane and the upper end of the protruding steel bar of the column crane base is not greater than 3H, release the third fastener that fixes the position of the outer ring body. Separate the positioning plate from the bottom side of the prefabricated column crane. Rotate the outer ring body to pull the positioning plate out from between the bottom side of the prefabricated column crane and the upper end of the protruding steel bar of the column crane base. H is the thickness dimension of the positioning plate in the vertical direction.

[0028] S10. The prefabricated column crane continues to descend slowly, and the real-time position of the positioning mark is adjusted. The front end of the transverse mark screw is dynamically aligned with the column crane alignment mark on the side of the prefabricated column crane until the protruding steel bar of the column crane base is inserted into the assembly and installation groove of the prefabricated column crane.

[0029] Compared with existing technologies, the beneficial effects of this invention are: This invention utilizes a combination structure of a counterweight chassis and a positioning support assembly. A lifting and rotating component is designed on the rotating square rod of the positioning support assembly. A positioning disc is fixedly installed on the outer ring of the lifting and rotating component. The positioning disc is initially inserted and positioned before the protruding steel bars of the column base, whose position is already fixed. Then, the lifting and rotating component and the positioning disc are raised to perform a "high-level" insertion and engagement with the prefabricated column crane above. Simultaneously, a marking positioning component is used to position and engage with the prefabricated column crane, marking the column crane alignment. As the prefabricated column crane descends and approaches the column base, it rotates a second time to separate the positioning disc. The pre-adjusted marking positioning component then dynamically engages with the column crane alignment mark on the side of the prefabricated column crane in real time, thus safely and accurately completing the fitting assembly of the prefabricated column crane and the column base. Attached Figure Description

[0030] Figure 1 This is an overall schematic diagram of the assembly of the prefabricated column crane and the column crane base in this invention.

[0031] Figure 2 This is a schematic diagram showing the cooperation between the transverse sliding plate and the counterweight chassis in this invention.

[0032] Figure 3 This is a vertical cross-sectional view of the positioning disk in this invention.

[0033] Figure 4 This is a top view schematic diagram of the lifting and rotating component and the positioning plate in this invention.

[0034] Figure 5 This is a schematic diagram of the initial positioning of the positioning disc and the protruding steel bar of the column base in this invention.

[0035] Figure 6 This is a schematic diagram showing the initial positioning of the positioning plate and the assembly mounting slot of the prefabricated column crane in this invention.

[0036] Figure 7 for Figure 6 A magnified schematic diagram of a portion of point A in the middle.

[0037] Figure 8 This is a schematic diagram showing the positioning plate descending synchronously with the prefabricated column crane during the descent of the prefabricated column crane in this invention.

[0038] Figure 9 This is a schematic diagram showing the positioning plate separating from the prefabricated column crane and the column crane base during the descent of the prefabricated column crane in this invention.

[0039] Figure 10 for Figure 9 A magnified schematic diagram of a portion of point B in the middle.

[0040] Wherein: 1-Column crane base, 101-Protruding steel bar; 2-Assembled column crane, 201-Assembly installation groove; 3-Counterweight chassis; 4-Positioning support assembly, 401-Transverse sliding plate, 402-First fastener, 403-Fixed rod, 404-Rotating shaft, 405-Rotating square rod, 406-Angle adjuster, 4061-Lower screw, 4062-Threaded sleeve, 4063-Upper screw; 5-Low-position support component, 501-Support frame, 502-Support sliding groove, 503-Second fastener; 6-Lifting and rotating component, 6 01-Inner ring body, 6011-Square through groove, 602-Outer ring body, 603-Fixing connecting plate, 604-Third fastener; 7-Marking positioning component, 701-Positioning sliding frame, 702-Positioning sliding groove, 703-Fourth fastener, 704-Fixing screw tube, 705-Horizontal movement marking screw, 706-Hand-turning structure; 8-Positioning disc, 801-Positioning plate, 8011-Lower alignment hole, 802-Upper alignment protrusion, 8021-Pipe body vertical groove, 8022-Insertion inclined surface, 8023-Alignment ring surface; 9-Column hanger alignment mark. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] Example 1: This invention designs a BIM-based prefabricated assembly positioning device, mainly including a counterweight chassis 3, a positioning support component 4, a low-position support component 5, a lifting and rotating component 6, a marking and positioning component 7, a positioning disk 8, and other structural components. The specific structural contents are as follows: Please see Figure 1 In the existing method: the column base 1 is prefabricated with multiple protruding steel bars 101, and the bottom of the prefabricated column hanger 2 is provided with multiple assembly and installation slots 201. During assembly, each assembly and installation slot 201 of the prefabricated column hanger 2 should be aligned with the protruding steel bars 101 one by one, and then fully aligned and inserted together to complete the assembly and alignment installation operation.

[0043] Please see Figure 5 The positioning support assembly 4 includes a transverse sliding plate 401, a fixed rod 403, and a rotating square rod 405. The fixed rod 403 is fixedly connected above the transverse sliding plate 401. A rotating shaft 404 is installed on the upper side of the transverse sliding plate 401. The lower end of the rotating square rod 405 is connected to the rotating shaft 404. The rotating square rod 405 is rotatably mounted above the transverse sliding plate 401 through the rotating shaft 404.

[0044] The transverse sliding plate 401 is slidably mounted on the counterweight chassis 3. A first fastener 402 is mounted on the transverse sliding plate 401, which secures the transverse sliding plate 401 to its position on the counterweight chassis 3. Figure 2 As shown, the transverse sliding plate 401 and the counterweight chassis 3 are viewed from the side. The transverse sliding plate 401 and the counterweight chassis 3 are limited by a locking structure and can slide freely. The transverse sliding plate 401 and the counterweight chassis 3 can be fastened together by the first fastener 402, such as a fastening bolt.

[0045] The angle adjuster 406 includes a lower screw 4061, a threaded sleeve 4062, and an upper screw 4063. The lower screw 4061 is screwed to one side of the threaded sleeve 4062, and the upper screw 4063 is screwed to the other side of the threaded sleeve 4062. The lower screw 4061 is movably connected to the upper end of the fixed rod 403, and the upper screw 4063 is movably connected to the upper end of the rotating square rod 405. The inner wall of the threaded sleeve 4062 is provided with a continuous thread structure. The thread directions of the lower screw 4061 and the upper screw 4063 are opposite. When the threaded sleeve 4062 rotates, it can drive the lower screw 4061 and the upper screw 4063 to move closer or further away at the same time.

[0046] Please see Figure 6 , Figure 7The low-position support 5 includes a support frame 501 and a support sliding groove 502. The support frame 501 has a support sliding groove 502, which is a vertical square groove. The support frame 501 is slidably mounted on the rotating square rod 405 through the support sliding groove 502. A second fastener 503 is installed on one side of the support frame 501. The second fastener 503 is used to fix the position of the support frame 501 on the rotating square rod 405. The fastening method of the second fastener 503 can be a fastening bolt.

[0047] Please see Figure 4 , Figure 5 The lifting and rotating component 6 is located above the low-position support component 5. The lifting and rotating component 6 includes an inner ring body 601 and an outer ring body 602. The inner ring body 601 has a square through groove 6011. The outer ring body 602 is rotatably installed on the periphery of the inner ring body 601. A third fastener 604 is installed on the side of the outer ring body 602. The third fastener 604 is used to fix the position of the outer ring body 602 on the rotating square rod 405. The second fastener 503 can be fastened by a bolt.

[0048] Please see Figure 1 , Figure 3 , Figure 4 The positioning plate 8 includes a positioning plate 801, multiple lower alignment holes 8011, and multiple upper alignment protrusions 802. The lower alignment holes 8011 correspond to the dimensions and spacing of the protruding steel bars 101 of the column hanger base 1. The multiple lower alignment holes 8011 are evenly distributed on the bottom side of the positioning plate 801, and the multiple upper alignment protrusions 802 are evenly distributed on the upper side of the positioning plate 801. The upper alignment protrusions 802 correspond to the dimensions and spacing of the assembly and installation grooves 201 of the prefabricated column hanger 2. Each lower alignment hole 8011 is independently provided with an upper alignment protrusion 802 directly above it. The upper alignment protrusion 802 has a vertical groove 8021, which is vertically connected to the lower alignment hole 8011. The positioning plate 801 is fixedly connected to the fixing plate 603 on the circumferential side of the outer ring body 602. The fixing plate 603 is provided with reinforcing ribs.

[0049] Combination Figure 7 The upper alignment protrusion 802 has an insertion inclined surface 8022 and an alignment ring surface 8023 on its outer ring side. The alignment ring surface 8023 matches the size of the assembly and installation groove 201 of the prefabricated column hanger 2. The insertion inclined surface 8022 is located on the upper side of the alignment ring surface 8023. The insertion inclined surface 8022 is actually a conical ring surface. This facilitates quick and convenient insertion and matching when aligned with the assembly and installation groove 201. Then the alignment ring surface 8023 can be fully inserted into the assembly and installation groove 201.

[0050] Please see Figure 6 , Figure 7 , Figure 10The marking and positioning component 7 is located above the lifting and rotating component 6. The marking and positioning component 7 includes a positioning sliding frame 701, a fourth fastener 703, a fixing screw tube 704, and a transverse marking screw 705. The positioning sliding frame 701 has a positioning sliding groove 702, which is a vertical square groove. The fourth fastener 703 is used to fix the position of the positioning sliding frame 701 on the rotating square rod 405. The fourth fastener 703 can be fastened by a bolt. The fixing screw tube 704 is installed on the ring side of the positioning sliding frame 701. The transverse marking screw 705 is screwed onto the fixing screw tube 704. The transverse marking screw 705 is equipped with a hand-turning structure 706.

[0051] Example 2: This invention designs a BIM-based method for positioning prefabricated assembly structures. The main process is as follows: First, place and fix the counterweight base plate 3 next to the open space of the column base 1, and raise the lifting and rotating component 6 along the rotating square rod 405 until the positioning plate 8 is higher than the highest point of the protruding steel bar 101 of the column base 1.

[0052] The second step is to rotate the outer ring 602 of the lifting rotating component 6 to rotate the positioning plate 8 to directly above the protruding steel bar 101 of the column base 1, and use the low-position support component 5 to support the lifting rotating component 6 at the current height position.

[0053] The third step is to adjust the lateral position of the transverse sliding plate 401, and adjust the tilt angle of the rotating square rod 405 using the angle adjuster 406. Simultaneously, by rotating the outer ring 602 of the lifting rotating component 6, the lower alignment hole 8011 of the positioning plate 801 is aligned with the protruding steel bar 101 directly below. Figure 5 Release the support of the lower support member 5 on the lifting and rotating member 6, insert the upper end of the protruding steel bar 101 into the lower alignment hole 8011 of the positioning plate 801, and fasten the relative position of the outer ring 602 and the inner ring 601 with the third fastener 604.

[0054] The fourth step involves moving the prefabricated column crane 2 to a certain distance above the column crane base 1 using a crane. The lifting and rotating parts 6 and the positioning plate 8 are then raised until the upper alignment protrusion 802 of the positioning plate 801 contacts the bottom surface of the prefabricated column crane 2.

[0055] Step 5, Conclusion Figure 6 Adjust the position of the prefabricated column hanger 2 until the upper alignment protrusion 802 of the positioning plate 801 is aligned with the assembly and installation groove 201 on the bottom side of the prefabricated column hanger 2. Continue to raise the lifting and rotating component 6 and the positioning plate 8. Insert the upper alignment protrusion 802 of the positioning plate 801 into the assembly and installation groove 201 on the bottom side of the prefabricated column hanger 2, and use the low support component 5 to support the lifting and rotating component 6.

[0056] Combination Figure 7 Adjust the position of the positioning sliding frame 701 of the positioning mark 7 on the rotating square rod 405, and rotate the transverse mark screw 705 until the front end of the transverse mark screw 705 contacts the appropriate position on the side of the assembled column hanger 2. Use a marker to draw the column hanger alignment mark 9 around the contact position. For example, you can draw a circle on the side of the assembled column hanger 2 along the outer perimeter of the transverse mark screw 705.

[0057] Step 6: Release the support of the lower support component 5 on the lifting and rotating component 6. The prefabricated column crane 2 is slowly lowered, and the lifting and rotating component 6 and the positioning plate 8 are lowered simultaneously. When the distance between the bottom side of the prefabricated column crane 2 and the upper end of the protruding steel bar 101 of the column crane base 1 is not greater than 3H, where H is the thickness dimension of the positioning plate 8 in the vertical direction. Combined with... Figure 9 , Figure 10 Release the third fastener 604 from fixing the position of the outer ring 602, separate the positioning plate 8 from the bottom side of the assembled column crane 2, rotate the outer ring 602, and pull the positioning plate 8 out from between the bottom side of the assembled column crane 2 and the upper end of the protruding steel bar 101 of the column crane base 1.

[0058] Finally, the prefabricated column crane 2 continues to descend slowly, the real-time position of the marking positioning component 7 is adjusted, and the front end of the transverse marking screw 705 is dynamically aligned with the column crane alignment mark 9 on the side of the prefabricated column crane 2 in real time, until the protruding steel bar 101 of the column crane base 1 is inserted into the assembly and installation groove 201 of the prefabricated column crane 2.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A BIM-based prefabricated assembly positioning device, characterized in that, include: Positioning support assembly (4): includes a transverse sliding plate (401), a fixed rod (403) fixedly connected above the transverse sliding plate (401), and a rotating square rod (405) rotatably installed above the transverse sliding plate (401). The upper ends of the fixed rod (403) and the rotating square rod (405) are connected to angle adjusters (406) for adjusting the rotation angle of the rotating square rod (405). The transverse sliding plate (401) is provided with a counterweight chassis (3) below it. The transverse sliding plate (401) slides in cooperation with the counterweight chassis (3) and the transverse sliding plate (401) is provided with a first fastener (402) for fixing the position of the transverse sliding plate (401) on the counterweight chassis (3). Low-position support component (5): includes a support frame (501) and a support sliding groove (502) formed in the inner perimeter of the support frame (501). The support frame (501) is slidably mounted on the rotating square rod (405) through the support sliding groove (502). A second fastener (503) for fixing the position of the support frame (501) on the rotating square rod (405) is installed on one side of the support frame (501). Lifting and rotating component (6): includes an inner ring body (601), a square through groove (6011) opened in the inner ring body (601), and an outer ring body (602) rotatably installed on the outer ring body (601). The outer ring body (602) is provided with a third fastener (604) for fixing the position of the outer ring body (602) on the rotating square rod (405). The lifting and rotating component (6) is located above the low-position support component (5); Positioning plate (8): includes a positioning plate (801) fixedly connected to the outer ring body (602) on one side, a plurality of lower alignment holes (8011) evenly opened on the bottom side of the positioning plate (801), and a plurality of upper alignment protrusions (802) evenly distributed on the upper side of the positioning plate (801). The lower alignment hole (8011) is aligned with the protruding steel bar of the column crane base, and the upper alignment protrusion (802) is aligned with the assembly and installation groove of the prefabricated column crane. Each lower alignment hole (8011) is independently provided with an upper alignment protrusion (802) directly above it. The upper alignment protrusion (802) is provided with a vertical groove (8021) that is vertically connected to the lower alignment hole (8011). The marking and positioning component (7) includes a positioning sliding frame (701), a positioning sliding groove (702) formed in the inner circumference of the positioning sliding frame (701), a fixing screw tube (704) installed on the ring side of the positioning sliding frame (701), and a transverse marking screw (705) screwed onto the fixing screw tube (704). The ring side of the positioning sliding frame (701) is also equipped with a fourth fastener (703) for fixing the position of the positioning sliding frame (701) on the rotating square rod (405). The marking and positioning component (7) is located above the lifting and rotating component (6).

2. The BIM-based prefabricated assembly positioning device according to claim 1, characterized in that: A rotating shaft (404) is installed on the upper side of the transverse sliding plate (401), and the lower end of the rotating square rod (405) is connected to the rotating shaft (404).

3. The BIM-based prefabricated assembly positioning device according to claim 1, characterized in that: The angle adjuster (406) includes a threaded sleeve (4062), a lower screw (4061) screwed to one side of the threaded sleeve (4062), and an upper screw (4063) screwed to the other side of the threaded sleeve (4062). The lower screw (4061) is movably connected to the upper end of the fixed rod (403), and the upper screw (4063) is movably connected to the upper end of the rotating square rod (405).

4. The BIM-based prefabricated assembly positioning device according to claim 3, characterized in that: The inner wall of the threaded sleeve (4062) is provided with a continuous thread structure, and the thread direction of the lower screw (4061) is opposite to that of the upper screw (4063).

5. The BIM-based prefabricated assembly positioning device according to claim 1, characterized in that: The outer ring body (602) is fixedly connected to a fixed connecting plate (603) with reinforcing ribs on its ring side, and the positioning plate (801) is fixedly connected to the fixed connecting plate (603).

6. The BIM-based prefabricated assembly positioning device according to claim 1, characterized in that: The outer ring side of the upper alignment protrusion (802) is provided with an alignment ring surface (8023) that matches the size of the assembly and installation groove of the prefabricated column hanger, and an insertion inclined surface (8022) located on the upper side of the alignment ring surface (8023).

7. The BIM-based prefabricated assembly positioning device according to claim 1, characterized in that: The support sliding groove (502) and the positioning sliding groove (702) are both vertical square grooves, and the transverse marking screw (705) is equipped with a hand-rotating structure (706).

8. A BIM-based prefabricated assembly positioning processing device and method, characterized in that, The BIM-based prefabricated assembly positioning processing device according to any one of claims 1 to 7 includes the following steps: S1. Place and fix the counterweight base plate (3) on the side of the open space of the column crane base. S2. Raise the lifting and rotating component (6) along the rotating square bar (405) until the positioning plate (8) is higher than the highest point of the protruding steel bar of the column base; S3. Rotate the outer ring (602) of the lifting rotating component (6), rotate the positioning plate (8) to the top of the protruding steel bar of the column base, and use the low support component (5) to support the lifting rotating component (6) at the current height position; S4. Adjust the lateral position of the transverse sliding plate (401), and adjust the tilt angle of the rotating square rod (405) by the angle adjuster (406). At the same time, adjust the rotation of the outer ring (602) of the lifting rotating component (6) to align the lower alignment hole (8011) of the positioning plate (801) with the protruding steel bar directly below. Release the support of the low support component (5) on the lifting rotating component (6), insert the upper end of the protruding steel bar into the lower alignment hole (8011) of the positioning plate (801), and fasten the relative position of the outer ring (602) and the inner ring (601) by the third fastener (604). S5. The prefabricated column crane is moved to a certain distance above the column crane base by a crane; S6. Continue to raise the lifting and rotating parts (6) and the positioning plate (8) until the upper alignment protrusion (802) of the positioning plate (801) contacts the bottom surface of the prefabricated column crane; S7. Adjust the position of the prefabricated column hanger until the upper alignment protrusion (802) of the positioning plate (801) is aligned with the assembly and installation groove on the bottom side of the prefabricated column hanger, and continue to raise the lifting and rotating parts (6) and the positioning plate (8) upwards. Insert the upper alignment protrusion (802) of the positioning plate (801) into the assembly and installation groove on the bottom side of the prefabricated column hanger, and use the low support (5) to support the lifting and rotating parts (6). S8. Adjust the position of the positioning sliding frame (701) of the positioning mark (7) on the rotating square rod (405), and rotate the transverse mark screw (705) until the front end of the transverse mark screw (705) contacts the appropriate position on the side of the assembled column crane. Use a marker to draw the column crane alignment mark (9) around the contact position. S9. Release the support of the low-position support (5) on the lifting and rotating part (6), and the prefabricated column crane slowly descends. At the same time, the lifting and rotating part (6) and the positioning plate (8) descend synchronously. When the distance between the bottom side of the prefabricated column crane and the upper end of the protruding steel bar of the column crane base is not greater than 3H, release the third fastener (604) from fixing the position of the outer ring body (602), separate the positioning plate (8) from the bottom side of the prefabricated column crane, rotate the outer ring body (602), and pull the positioning plate (8) out from between the bottom side of the prefabricated column crane and the upper end of the protruding steel bar of the column crane base. Wherein, H is the thickness dimension of the positioning disk (8) in the vertical direction; S10. The prefabricated column crane continues to descend slowly. Adjust the real-time position of the marking positioning piece (7) and use the front end of the transverse marking screw (705) to perform real-time dynamic alignment with the column crane alignment mark (9) on the side of the prefabricated column crane until the protruding steel bar of the column crane base is inserted into the assembly and installation groove of the prefabricated column crane.

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