CN204570934U - The flat oblique locating connector of cylindrical steel structure based on BIM - Google Patents

Abstract

The utility model discloses a BIM-based horizontal and oblique positioning connection device for a cylindrical steel structure, which comprises an arc-shaped bottom plate and a rotating plate hinged together, and a telescopic support; the bottom surface of the arc-shaped bottom plate is provided with an inner cavity, and The electromagnet A is installed in the middle, and the rotating plate is provided with an inner cavity, and the electromagnet B is installed in the inner cavity, and a switch, a power supply and a circuit for controlling the on-off of the electromagnet are provided; a BIM positioning sheet is pasted on the positioning connecting plate, and the BIM positioning sheet Carries position, hole position and angle information. Use the appropriate angle formed by the arc-shaped bottom plate and the flap to determine that the positioning connecting plate is at a suitable angle, and ensure that the contact point between the positioning connecting plate and the structural main body is a welding point. Thereby determine the fixed distance and angle of the inclined beam. Ensure construction accuracy, improve construction efficiency, reduce construction difficulty and worker workload, save construction cost, and also provide a foundation for the rapid development and application of BIM technology in construction enterprises.

Description

BIM-based horizontal and oblique positioning connection device for cylindrical steel structure

technical field

The utility model relates to the technical field of connection and positioning of steel structures, in particular to a BIM-based horizontal and oblique positioning connection device for cylindrical steel structures.

Background technique

When connecting steel structure buildings or bridges, such as connecting the secondary girder with the main girder, due to the large mass of the two girders, direct welding is difficult and the precision is not high. Weld and fix the positioning connecting plate, then attach the web of the secondary beam to the surface of the positioning connecting plate, and then fix the end of the web and the positioning connecting plate through bolt connection. The distance between the surface of the positioning connecting plate and the center line of the web of the secondary beam is determined, and the positioning connecting plate is parallel to the web of the secondary beam, which ensures that the secondary beam is in an appropriate position, and in theory can achieve the purpose of high-precision connection. But in fact, problems such as poor positioning accuracy, excessive deflection angle, or misalignment often occur. The main reason is that there is a large error in the pre-welding of the positioning connecting plate and the main beam. At present, the method of welding the positioning connection plate to the main beam is to rely on the workers to use the T-square as a reference, or use the angle meter to design the angle, and then use the hand-held positioning connection plate to weld. This welding method has a large error. Problems such as inconsistency of inclination angle and front-to-back misalignment often occur. Measure after welding. If the accuracy is found to be insufficient, the way to correct it is to use a sledgehammer. This cumbersome processing method can only slightly correct the angular deviation problem. For misalignment The problem cannot be solved at the root, and rework may cause the problem of poor bearing performance of the main beam. In order to achieve the standard connection accuracy, the workload is huge and the efficiency is low, which affects the construction progress of the entire project.

Due to the above technical problems, it is currently difficult to extend the application of Building Information Modeling (BIM) from the design stage to the construction stage, resulting in attenuation in the process of information transmission, which hinders the application of BIM technology in the construction process of large and complex projects.

Utility model content

The purpose of this utility model is to solve the problems and deficiencies in the existing technology, and provide a diagonal positioning connection technology suitable for the design phase and construction phase of the building information model (BIM), improve the construction accuracy, and reduce the error in the process of information transmission. Attenuation; It is suitable for the application of BIM technology in the construction process of large and complex projects, and realizes effective visual management of construction projects.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a BIM-based cylindrical steel structure horizontal and oblique positioning connection device, including an arc-shaped bottom plate that is positioned on the surface of the main body of the cylindrical structure, and connected to the The rotating plate at one end of the arc-shaped bottom plate, and a telescopic bracket is set between the rotating plate and the arc-shaped bottom plate; the intersection of the extension line of the outer surface of the rotating plate and the main body of the structure is the welding point R of the top corner of the positioning connecting plate; on the main body of the structure Positioning markings matching the arc-shaped bottom plate are pre-set; the bottom surface of the arc-shaped bottom plate is provided with an inner cavity, and an electromagnet armor is installed in the inner cavity, and a switch, a power supply and a circuit for controlling the on-off of the electromagnet are provided; The rotating plate is provided with a positioning hole corresponding to the mounting hole of the positioning connecting plate, and the distance between the center of the positioning hole and the center line of the pre-installed inclined beam web is a fixed length n. The rotating plate is provided with an inner cavity, and an electromagnet B is installed in the inner cavity, and a switch, a power supply and a circuit for controlling the on-off of the electromagnet are provided. The power supply of the electromagnet can be drawn out through the power line and connected with the transformed direct current, or a battery for powering the magnet is also arranged in the base. A BIM positioning sheet is pasted on the positioning connection plate, and the BIM positioning sheet carries position, hole position and angle information; the BIM positioning sheet is a two-dimensional code or a three-dimensional code. Use the laser scanner to scan the position of the welding point R, and use the BIM information scanner to scan the BIM positioning sheet, and then use the mechanical welding arm to automatically weld the welding point according to the scanning positioning information. The positioning connecting plate is parallel to or oblique to the axis of the cylindrical steel structure. The arc-shaped bottom plate is used as the positioning motherboard, and the arc is determined according to different pipe diameters, but the arc length of the base is a fixed number, which is convenient for calculating the positioning point.

A BIM-based horizontal and oblique positioning connection device for cylindrical steel structures, including an arc-shaped bottom plate that is positioned on the surface of the main body of the cylindrical structure, and a rotating plate connected to one end of the arc-shaped bottom plate through a rotating shaft. A telescopic bracket is set between the arc-shaped bottom plates; the intersection of the extension line of the outer surface of the rotating plate and the main body of the structure is the corner welding point R of the positioning connecting plate; at least two positioning holes are preset on the main body of the structure. The bottom surface of the arc-shaped bottom plate is provided with at least two positioning clips, the positioning clips are matched with the corresponding positioning clip holes, and the distance between the center of the positioning clips and the welding point R is a fixed length m; There is a positioning hole corresponding to the mounting hole of the positioning connecting plate, and the distance between the center of the positioning hole and the center line of the pre-installed inclined beam web is a fixed length n; the rotating plate is provided with an inner cavity, and an electromagnet is installed in the inner cavity B, and be provided with the switch and the power supply and circuit of controlling electromagnet on-off. The positioning connecting plate is parallel to or oblique to the axis of the cylindrical steel structure. The arc-shaped bottom plate is used as the positioning motherboard, and the arc is determined according to different pipe diameters, but the arc length of the base is a fixed number, which is convenient for calculating the positioning point.

A BIM-based oblique positioning connection device for steel structures, including a bottom plate that is positioned on the main body of the structure, and a rotating plate connected to one end of the bottom plate through a rotating shaft, and a telescopic bracket is arranged between the rotating plate and the bottom plate; the outer surface of the rotating plate The intersection of the extension line and the structural main body is the top angle welding point R of the positioning connecting plate; the positioning marking line matching the bottom plate is preset on the structural main body; the bottom plate is composed of a magnetic isolation material shell and a magnet armor, The rotating plate is composed of a magnetic isolation material shell and a magnet B; the rotating plate is provided with a positioning hole corresponding to the mounting hole of the positioning connecting plate, and the distance between the center of the positioning hole and the center line of the pre-installed oblique beam web The distance is a fixed length n; said magnet A and magnet B are rubidium magnets or common magnets.

A BIM positioning sheet is pasted on the positioning connection plate, and the BIM positioning sheet carries position and angle information; the BIM positioning sheet is a two-dimensional code or a three-dimensional code. Use the laser scanner to scan the position of the welding point R, and use the BIM information scanner to scan the BIM positioning sheet, and then use the mechanical welding arm to automatically weld the welding point according to the scanning positioning information. The so-called BIM positioning board is for each welding workpiece, the position and angle of the positioning board are determined by the information carried on the BIM digital graphic sheet on the positioning connection board; the position of the connection board and the hole position are guaranteed to be correct. After the welding point R is scanned by a laser scanner, the welding point is automatically welded by a mechanical welding arm. If necessary, the BIM positioning sheet can be equipped with a nano-microelectronic sheet to measure the bidirectional angular displacement of the component in real time (MEMS).

A straight plate is arranged on the upper side of the arc-shaped base plate along a tangent line, and one end of the telescopic bracket is connected to the rotating plate, and the other end is connected to the cylindrical base plate or the straight plate.

The telescopic support includes an outer sleeve and an inner sleeve rod, both of which are matched and fitted and fixed by a screw. The ends of the outer sleeve and the inner sleeve rod are respectively connected between the arc-shaped base plate and the rotating plate through pin shafts, or connected to the Between the straight plate and the rotating plate; a scale is arranged on the inner sleeve rod, and a positioning marking line is arranged on the nozzle of the outer casing, and the positioning marking line and the scale scale cooperate to determine the opening and closing angle of the arc-shaped bottom plate and the rotating plate.

The telescopic support includes a double-ended nut sleeve, and the two ends of the double-ended nut sleeve are respectively threaded with upper and lower screw rods, and the ends of the upper and lower screw rods are respectively connected between the arc-shaped bottom plate and the rotating plate through pin shafts, or connected between the straight plate and the rotating plate. Between the rotating plates; a scale is set on one side of the double-ended nut sleeve, and a positioning marking is set at the end of the upper screw or the lower screw. The positioning marking cooperates with the scale to determine the opening and closing of the arc-shaped bottom plate and the rotating plate angle.

The telescopic support includes two push-pull rods respectively hinged on the arc-shaped bottom plate and the rotating plate, or two push-pull rods respectively hinged on the straight plate and the rotating plate, and the ends of the two push-pull rods are hinged on the same pin, and the pin The shaft is provided with a radial center screw hole, and an inner strut is set inside and connected with threads. One end of the inner strut is provided with a handle, and the other end is matched with the rotating sleeve arranged on the rotating shaft.

The telescopic support includes connecting rods respectively connected to the arc-shaped bottom plate and the rotating plate, or connecting rods respectively connected to the straight plate and the brick plate. The two connecting rods meet together, and slide bars are respectively arranged at the intersection of the two connecting rods. holes and lock bolts.

The telescopic bracket includes a slide bar hinged on the rotating plate and a chute arranged on the straight plate. A nut slider is matched in the chute, and a screw is also set in the chute. The screw is matched with the nut slider. A restraining baffle is provided to prevent axial movement, and a knob is provided at the end of the screw.

The beneficial effect of the utility model is: the utility model utilizes the positioning relationship between the arc-shaped bottom plate and the structural main body to determine the distance relationship between the positioning point and the welding point. Use the appropriate angle formed by the arc-shaped bottom plate and the rotating plate to determine that the positioning connecting plate is at a suitable angle, and ensure that the contact point between the positioning connecting plate and the structural main body is a welding point. Thereby determine the fixed distance and angle of the inclined beam.

The utility model adopts a variety of telescopic support structures, which can respectively achieve the effect of fixing the arc-shaped bottom plate and the rotating plate to generate a suitable angle. If necessary, the BIM positioning sheet can be equipped with a nano-microelectronic sheet to measure the bidirectional angular displacement of the component in real time (MEMS).

The utility model provides a reliable positioning basis for actual construction, ensures construction accuracy, improves construction efficiency, reduces construction difficulty and worker workload, saves construction costs, and also provides a basis for the rapid development and application of BIM technology in construction enterprises.

Description of drawings

Fig. 1 is a schematic diagram of the connection state of a cylindrical column and a positioning connecting plate and an oblique beam;

Fig. 2 is one of the structural diagrams for positioning the positioning connecting plate;

Fig. 3 is a top view schematic diagram of Fig. 2;

Fig. 4 is one of structural representations of telescopic support;

Fig. 5 is the second structural representation of telescopic support;

Fig. 6 is the third structural representation of the telescopic support;

Fig. 7 is the fourth structural representation of telescopic support;

Fig. 8 is the fifth structural diagram of the telescopic bracket;

Fig. 9 is a schematic front view of the positioning connecting plate;

Fig. 10 is a schematic diagram of another oblique positioning connection device;

FIG. 11 is a schematic diagram of the C-C sectional structure in FIG. 10 .

In the figure, the number 1 is an arc-shaped bottom plate, 2 is a rotating plate, 21 is a positioning hole, 3 is a rotating shaft, 4 is a telescopic bracket, 401 is an outer casing, 402 is an inner sleeve rod, 403 is an upper pin, 404 is a lower Pin shaft, 405 is a screw, 406 is a scale, 407 is a positioning mark, 408 is a stud nut, 409 is an upper screw, 410 is a lower screw, 411 is an inner support rod, 412 is an upper push-pull rod, 413 is Push down the pull rod, 414 is the nut sleeve, 415 is the thread section, 416 is the rotary sleeve, 417 is the moving dial, 418 is the handle, 419 is the upper link, 420 is the lower link, 421 is the slide hole, 422 is the lock Bolt, 423 is a fixed dial, 424 is a slide rod, 425 is a nut slider, 426 is a chute, 427 is a screw rod, 428 is a restraining block, 429 is a knob, 5 is a positioning connecting plate, 51 is a mounting hole, 52 For installing bolts, 6 is the positioning clip, 7 is the positioning hole, 8 is the straight plate, 10 is the centerline of the inclined beam web, 11 is the cylindrical member, 12 is the end plate, 13 is the inclined beam web, 14 is the oblique Beam wing plate, 15 is the positioning point (or marking line), 16 is the iron core, 17 is the coil, 18 is the electromagnet switch, 19 is the BIM positioning piece, 20 is the rubidium magnet, and 21 is the shell of magnetic isolation material.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Embodiment 1: A BIM-based horizontal and oblique positioning connection device for cylindrical steel structures, see Fig. 1, Fig. 2 and Fig. 3, including an arc-shaped bottom plate 1 positioned on the web of the main girder, and through the rotating shaft Connected to the rotating plate 2 at one end of the arc-shaped bottom plate 1, a telescopic support is set between the rotating plate 2 and the arc-shaped bottom plate 1; Corner welding point R; on the main girder web, the positioning marking line matched with the arc-shaped base plate 1 is preset; the bottom surface of the arc-shaped base plate 1 is provided with an inner cavity, and an electromagnet armor is installed in the inner cavity, and There is a switch, a power supply and a circuit for controlling the on-off of the electromagnet; the positioning hole corresponding to the mounting hole of the positioning connecting plate is arranged on the said rotating plate 2, and the distance between the center of the positioning hole and the center line of the pre-installed inclined beam web is Fixed length n. The power supply of the electromagnet can be drawn out through the power line and connected with the transformed direct current, or a battery for powering the magnet is also arranged in the base. The arc-shaped bottom plate 1 is used as a positioning motherboard, and the arc is determined according to different pipe diameters, but the arc length of the base is a fixed number, which is convenient for calculating the positioning point 15.

Referring to FIG. 11 , in this embodiment, the positioning connecting plate is parallel to the axis of the cylindrical steel structure. A BIM positioning sheet 19 is pasted on the positioning connecting plate, and the BIM positioning sheet 19 carries position and angle information; the BIM positioning sheet is a two-dimensional code or a three-dimensional code. Use the laser scanner to scan the position of the welding point R, and use the BIM information scanner to scan the BIM positioning sheet, and then use the mechanical welding arm to automatically weld the welding point according to the scanning positioning information.

The so-called BIM positioning board is for each welding workpiece, the position and angle of the positioning board are determined by the information carried on the BIM digital graphic sheet on the positioning connection board; the position of the connection board and the hole position are guaranteed to be correct. After the welding point R is scanned by a laser scanner, the welding point is automatically welded by a mechanical welding arm. The welding positioning instrument shown in Figure 2 has high precision, fast positioning speed and good effect. Robots can be used for automatic welding. Scan the QR code information and then perform positioning welding based on the main beam target. Or the robot scans the positioning marking line 15 on the main beam as a reference for welding. Or firstly use a laser scanner to scan the welding point R, and then the robot uses a mechanical welding arm to automatically weld the welding point. The beam connection is thereby automated. If necessary, the BIM positioning sheet can be equipped with a nano-microelectronic sheet (MEMS) to measure the bidirectional angular displacement of the component in real time.

Embodiment 2: Referring to Fig. 1, Fig. 2 and Fig. 3, on the basis of embodiment 1, not only an inner cavity is provided on the arc-shaped bottom plate 1, but also an electromagnet armor is installed in the inner cavity, and a switch for controlling the on-off of the electromagnet is provided and power and wiring. And also rotating plate 2 is provided with inner cavity, and electromagnet second is installed in the inner cavity, and is provided with switch and power supply and the circuit of control electromagnet on-off.

The arc-shaped base plate 1 and the rotating plate 2 have magnetic adsorption capacity respectively, one side is adsorbed to the components, and the other is adsorbed to position the connection plate to ensure that the positions of the plates and the holes are correct.

Embodiment 3: Referring to FIG. 1 , in the process of docking and fixing the inclined beam and the main beam, a positioning connecting plate 5 needs to be set in advance to determine the connection position and angle of the inclined beam. Referring to FIG. 9 , the welding of the positioning connecting plate 5 adopts a positioning instrument with a suitable angle to determine the welding position and inclination angle of the positioning connecting plate 5 .

The arc-shaped bottom plate 1 is attached to the cylindrical member 11, the rotating plate 2 and the arc-shaped bottom plate 1 are hinged together through the rotating shaft 3, and the telescopic support 4 is arranged between the rotating plate 2 and the arc-shaped bottom plate 1. Turning plate 2 is provided with inner cavity, and electromagnet B is installed in the inner cavity, and is provided with the switch of controlling electromagnet on-off, power supply and circuit.

In FIG. 9 , the intersection of the extension line of the outer surface of the rotating plate 2 and the cylindrical member 11 is the corner welding point R of the positioning connecting plate 5 . At least two positioning holes 7 are preset on the cylindrical member 11, and at least two positioning chucks 6 are provided on the bottom surface of the arc-shaped bottom plate 1. The positioning chucks 6 are matched with the corresponding positioning holes 7, and the positioning The distance between the center of the chuck 6 and the welding point R is a fixed length m. Referring to Fig. 9, the rotating plate 2 is provided with a positioning hole 21 corresponding to the installation hole of the positioning connecting plate 5, and the distance between the center of the positioning hole 21 and the pre-installed oblique beam web centerline 10 is a fixed length n, Usually 3 inches.

The welding positioning instrument has high precision, fast positioning speed and good effect. Robots can be used for automatic welding. For example, after scanning the welding point R with a laser scanner, the welding point is automatically welded with a mechanical welding arm, so that Beam connections are automated. The welded positioning connecting plate 5 can be directly connected with the inclined beam without any error problem.

Referring to Fig. 4, the telescopic bracket 4 includes an outer sleeve 401 and an inner sleeve rod 402, which are fixed by a screw 405 after matching and fitting, and the ends of the outer sleeve 401 and the inner sleeve rod 402 pass through a lower pin 404 and an upper pin 403 respectively It is connected between the arc-shaped base plate 1 and the rotating plate 2. A scale 406 is provided on the inner sleeve rod 402, and a positioning marking line 407 is provided at the nozzle of the outer sleeve 401. The positioning marking line 407 cooperates with the scale scale 406 to determine the opening and closing angle of the arc-shaped base plate 1 and the rotating plate 2 .

Embodiment 4: The content is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is: referring to FIG. The upper screw 409 and the lower screw 410 , the ends of the upper screw 409 and the lower screw 410 are connected to the rotating plate 2 and the arc-shaped bottom plate 1 through the upper pin 403 and the lower pin 404 respectively. A scale 406 is provided on one side of the double-ended nut 408, and a positioning marking 407 is provided at the end of the upper screw 409. The positioning marking 407 cooperates with the scale 406 to determine the opening and closing of the arc-shaped bottom plate 1 and the rotating plate 2. angle.

Embodiment 5: The content is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is: referring to FIG. The pull rod 412 and the lower push-pull rod 413, the ends of the two push-pull rods are hinged on the same pin shaft, the pin shaft is provided with a radial center screw hole, and a nut sleeve 414 is extended, the nut sleeve 414 is sleeved with an inner strut 411, and Threaded connection, one end of the inner support rod 411 is provided with a handle, and the other end is matched with the rotary sleeve provided on the rotating shaft 3 .

Embodiment 6: The content is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is: referring to FIG. On the upper connecting rod and the lower connecting rod of the rotating plate 2 and the straight plate 8, the two connecting rods meet together, and sliding holes are respectively arranged at the intersection of the two connecting rods, and locking bolts are installed.

Embodiment 7: The content is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is: referring to FIG. The slide bar on the rotating plate 2 and the chute arranged on the straight plate 8 are matched with a nut slider in the chute, and a screw rod is also set in the chute, and the screw rod is matched with the nut slider. The movable restraining block is provided with a knob at the end of the screw rod.

Embodiment 7: The content is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is: see FIG. 10 , in this embodiment, the positioning connecting plate is oblique to the axis of the cylindrical steel structure.

Embodiment 8: A BIM-based horizontal and oblique positioning connection device for a cylindrical steel structure. The attached figure is a picture, and you can refer to FIG. Connected to the rotating plate 2 at one end of the arc-shaped base plate 1, a telescopic support is set between the rotating plate 2 and the arc-shaped base plate 1; the intersection of the extension line of the outer surface of the rotating plate 2 and the structural main body is used for positioning the top corner welding of the connecting plate Point R; at least two positioning holes are pre-set on the structure main body, and at least two positioning heads are arranged on the bottom surface of the arc-shaped bottom plate 1, and the positioning heads are matched with the corresponding positioning holes, and the center of the positioning head The distance between the welding point R and the welding point R is a fixed length m; the rotating plate 2 is provided with a positioning hole corresponding to the mounting hole of the positioning connecting plate, and the center line of the positioning hole and the center line of the pre-installed oblique beam web The distance is a fixed length n; the rotating plate 2 is provided with an inner cavity, and an electromagnet B is installed in the inner cavity, and a switch, a power supply and a circuit for controlling the on-off of the electromagnet are provided.

Embodiment 9: Referring to Figure 10 and Figure 11, a BIM-based oblique positioning connection device for steel structures, including a bottom plate that is positioned on the main body of the structure, and a rotating plate connected to one end of the bottom plate through a rotating shaft, the rotating plate and the bottom plate Telescopic brackets are arranged between them; the intersection of the extension line of the outer surface of the rotating plate and the structural main body is the corner welding point R of the positioning connecting plate; the positioning marking line matching the bottom plate is preset on the structural main body; the bottom plate It is composed of a magnetic isolation material shell and a rubidium magnet A, and the turn plate is composed of a magnetic isolation material shell and a rubidium magnet B; the turn plate is provided with a positioning hole corresponding to the mounting hole of the positioning connection plate, and the center of the positioning hole The distance from the center line of the pre-installed inclined beam web is a fixed length n.

Embodiment 10: Referring to Figure 10 and Figure 11, a BIM-based oblique positioning connection device for steel structures, including a bottom plate that is positioned on the main body of the structure, and a rotating plate connected to one end of the bottom plate through a rotating shaft, the rotating plate and the bottom plate Telescopic brackets are arranged between them; the intersection of the extension line of the outer surface of the rotating plate and the structural main body is the corner welding point R of the positioning connecting plate; the positioning marking line matching the bottom plate is preset on the structural main body; the bottom plate It is composed of a magnetic isolation material shell and an ordinary magnet A, and the rotating plate is composed of a magnetic isolation material shell and an ordinary magnet B; the rotating plate is provided with a positioning hole corresponding to the mounting hole of the positioning connecting plate, and the center of the positioning hole The distance from the center line of the pre-installed inclined beam web is a fixed length n.

Claims (10)

1. A BIM-based horizontal and oblique positioning connection device for cylindrical steel structures, which is characterized in that: it includes an arc-shaped bottom plate that is positioned on the surface of the main body of the cylindrical structure, and a rotating shaft that is connected to one end of the arc-shaped bottom plate through a rotating shaft. Plate, telescopic support is set between the rotating plate and the arc-shaped bottom plate; the intersection of the extension line of the outer surface of the rotating plate and the structural main body is the corner welding point R of the positioning connecting plate; the structural main body is pre-set with the circle The positioning markings matched by the arc-shaped bottom plate; the bottom surface of the arc-shaped bottom plate is provided with an inner cavity, and an electromagnet armor is installed in the inner cavity, and a switch, a power supply and a circuit for controlling the on-off of the electromagnet are provided; the rotating plate is provided with an inner cavity , the electromagnet B is installed in the inner cavity, and a switch, a power supply and a circuit for controlling the on-off of the electromagnet are provided; the positioning hole corresponding to the mounting hole of the positioning connection plate is provided on the rotating plate, and the center of the positioning hole is in line with the pre-installed oblique The distance between the centerlines of the beam webs is a fixed length n. 2. The horizontal and oblique positioning connection device for cylindrical steel structures based on BIM according to claim 1, characterized in that: a BIM positioning sheet is pasted on the positioning connection plate, and the BIM positioning sheet carries position, hole position and angle Information; the BIM positioning sheet is a two-dimensional code or a three-dimensional code. 3. The horizontal and oblique positioning connection device for cylindrical steel structures based on BIM according to claim 1, characterized in that: the upper side of the arc-shaped bottom plate is provided with a straight plate along the tangent line, and one end of the telescopic support is connected to the The other end is connected to a cylindrical bottom plate or a straight plate. 4. The BIM-based horizontal and oblique positioning connection device for cylindrical steel structures according to claim 3, characterized in that: the telescopic support includes an outer sleeve and an inner sleeve rod, and the two are matched and fitted and fixed by tightening parts. The ends of the outer sleeve and the inner sleeve rod are respectively connected between the arc-shaped bottom plate and the rotating plate through pin shafts, or between the straight plate and the rotating plate; The mouth is provided with a positioning marking line, and the positioning marking line cooperates with the scale to determine the opening and closing angle of the arc-shaped bottom plate and the rotating plate. 5. The horizontal and oblique positioning connection device for cylindrical steel structures based on BIM according to claim 4, characterized in that: the telescopic support includes double-ended nut sleeves, and the two ends of the double-ended nut sleeves are respectively threaded with upper and lower Screw, the ends of the upper and lower screws are respectively connected between the arc-shaped bottom plate and the rotating plate through pin shafts, or between the straight plate and the rotating plate; a scale is arranged on one side of the double-ended nut sleeve, and the upper screw or the lower The end of the screw rod is provided with a positioning marking line, and the positioning marking line cooperates with the scale to determine the opening and closing angle of the arc-shaped bottom plate and the rotating plate. 6. The BIM-based horizontal and oblique positioning connection device for cylindrical steel structures according to claim 4, characterized in that: the telescopic support includes two push-pull rods respectively hinged on the arc-shaped bottom plate and the rotating plate, or Two push-pull rods are respectively hinged on the straight plate and the rotary plate. The ends of the two push-pull rods are hinged on the same pin shaft. One end of the rod is provided with a handle, and the other end is matched with the rotary sleeve provided on the rotating shaft. 7. The BIM-based horizontal and oblique positioning connection device for cylindrical steel structures according to claim 4, characterized in that: the telescopic support includes connecting rods connected to the arc-shaped bottom plate and the rotating plate respectively, or respectively connected to On the connecting rods on the straight plate and the brick plate, the two connecting rods meet together, slide holes are respectively arranged at the intersections of the two connecting rods, and locking bolts are installed. 8. The horizontal and oblique positioning connection device for cylindrical steel structures based on BIM according to claim 4, characterized in that: the telescopic support includes a sliding bar hinged on the rotating plate and a chute arranged on the straight plate, the sliding A nut slider is matched in the slot, and a screw is also set in the chute, and the screw is matched with the nut slider. The screw is provided with a restraining block to prevent axial movement, and a knob is provided at the end of the screw. 9. A BIM-based horizontal and oblique positioning connection device for cylindrical steel structures, which is characterized in that it includes an arc-shaped bottom plate that is positioned on the surface of the main body of the cylindrical structure, and a rotating shaft that is connected to one end of the arc-shaped bottom plate through a rotating shaft. A telescopic bracket is set between the rotating plate and the arc-shaped bottom plate; the intersection of the extension line of the outer surface of the rotating plate and the main body of the structure is the welding point R of the top corner of the positioning connecting plate; at least two positioning cards are pre-set on the main body of the structure Holes, at least two positioning clips are provided on the bottom surface of the arc-shaped bottom plate, the positioning clips are matched with the corresponding positioning clip holes, and the distance between the center of the positioning clips and the welding point R is a fixed length m; The rotating plate is provided with a positioning hole corresponding to the mounting hole of the positioning connecting plate, and the distance between the center of the positioning hole and the pre-installed inclined beam web centerline is a fixed length n; the rotating plate is provided with an inner cavity, An electromagnet B is installed in the inner cavity, and a switch, a power supply and a circuit for controlling the on-off of the electromagnet are provided. 10. A BIM-based horizontal and oblique positioning connection device for cylindrical steel structures, which is characterized in that it includes an arc-shaped bottom plate that fits and is positioned on the surface of the main body of the cylindrical structure, and a rotary shaft that is connected to one end of the arc-shaped bottom plate through a rotating shaft. Plate, telescopic support is set between the rotating plate and the arc-shaped bottom plate; the intersection of the extension line of the outer surface of the rotating plate and the structural main body is the corner welding point R of the positioning connecting plate; the structural main body is pre-set with the circle The positioning markings matched by the arc-shaped bottom plate; the bottom plate is composed of a magnetic isolation material shell and a magnet A, and the rotating plate is composed of a magnetic isolation material shell and a magnet B; the rotating plate is provided with a positioning connecting plate. The positioning hole corresponding to the hole, the distance between the center of the positioning hole and the center line of the pre-installed inclined beam web is a fixed length n; the magnet A and magnet B are rubidium magnets or ordinary magnets.