A wind pipe positioning device for fabricated building and a method of using the same

Abstract

The application discloses a kind of wind pipe positioning device for fabricated building and its using method, it is related to wind pipe positioning device technical field, to solve the rough unevenness of the inner face joint of wind pipe and fan shell, tear sound can be caused, and due to successive wind pipe can produce resonance, long-term vibration can cause the bolt of wind pipe positioning device to loosen, cause the problem of wind pipe drop.The outside of the fixed screw rod is fixedly installed with upper fixed channel steel by nut, the lower part of the upper fixed channel steel is provided with lower fixed channel steel, the upper fixed channel steel is fixedly installed with spiral air pipe clamp above, the upper fixed channel steel and lower fixed channel steel are provided with rectangular air pipe between, the both sides of the lower fixed channel steel are symmetrically provided with balance weight block sliding rod, the lower part of the balance weight block sliding rod is provided with balance weight block, the upper end of the balance weight block is provided with balance weight block connecting seat, the front end of the lower fixed channel steel is respectively provided with horizontal sensor and PLC module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air pipe positioning device, and particularly to an air pipe positioning device for fabricated building and a use method thereof. BACKGROUND

[0002] Fabricated building is a mode of factory prefabricated production and on-site assembly, and is characterized by standardized design, factory production, assembly construction, integrated decoration and information management, and integrates various business fields such as research and development design, production and manufacturing, and on-site assembly. The air pipe for fabricated building refers to an air pipe that is standardized prefabricated in a factory and assembled in a modular manner on site. The air pipe positioning device, as the name implies, is a support for positioning and supporting the air pipe. The air pipe support is a structural member for supporting overhead pipe laying on the ground. As the positioning and supporting structure of the air pipe, the air pipe support is installed at the design installation point according to the operating performance and layout requirements of the air pipe. The air pipe and the air pipe support cannot be displaced relative to each other and have sufficient rigidity.

[0003] A kind of air pipe support, belong to building equipment field, is disclosed in Chinese patent publication No. CN206682422U, authorized on November 28, 2017. The technical solution is as follows: the air pipe support is arranged between the air pipe and the cross arm, and includes a horizontally arranged shell. The upper part of the shell is provided with an air pipe clamping part, and the lower part is provided with a cross arm clamping part. The air pipe clamping part includes air pipe clamping plates arranged on both sides of the air pipe. The cross arm clamping part includes cross arm clamping plates arranged on both sides of the cross arm. The lower part of the air pipe clamping plate is slidably connected to the upper part of the shell, and the upper part of the cross arm clamping plate is slidably connected to the lower part of the shell. The utility model has the advantages of reasonable design and simple structure. The device is arranged between the air pipe and the cross arm, and the upper and lower clamping plates clamp the air pipe and the cross arm respectively, ensuring that the two do not separate and have stability.

[0004] The existing technical solutions in the above have the following defects: if the inner surface joint between the air pipe and the fan shell is rough and uneven, it will cause tearing sound. Since the connected air pipes will resonate, long-term vibration will cause the bolts of the air pipe positioning device to loosen, causing the air pipe to fall. Therefore, the present application provides an air pipe positioning device for fabricated building and a use method thereof to solve the above problems. SUMMARY

[0005] The present application aims to provide an air pipe positioning device for fabricated building and a use method thereof to solve the problem of rough and uneven inner surface joint between the air pipe and the fan shell, which will cause tearing sound. Since the connected air pipes will resonate, long-term vibration will cause the bolts of the air pipe positioning device to loosen, causing the air pipe to fall.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air duct positioning device for assembled buildings, comprising an upper fixed channel steel and a fixed screw rod, the outer side of the fixed screw rod is fixedly installed with the upper fixed channel steel by a nut, a lower fixed channel steel is arranged below the upper fixed channel steel, a spiral air duct clamp is fixedly installed on the upper end face of the upper fixed channel steel, a rectangular air duct is arranged between the upper fixed channel steel and the lower fixed channel steel, balancing sinker sliding rods are symmetrically arranged on both sides of the lower fixed channel steel, a balancing sinker is arranged below the balancing sinker sliding rod, a balancing sinker connecting seat is arranged on the upper end of the balancing sinker, and the balancing sinker connecting seat is connected to the balancing sinker. The sinker sliding rod is slidably connected, and the front end of the lower fixed channel steel is respectively provided with a horizontal sensor and a PLC module, and an anti-seismic nut locking mechanism is provided at the connection between the fixed screw rod and the lower fixed channel steel, and a nut locking limit sleeve is provided at the outer end of the anti-seismic nut locking mechanism, and a fixed screw rod installation groove is provided on one side of the nut locking limit sleeve, and a fixed screw rod sleeve is provided for internal movement of the nut locking limit sleeve, and a spring is provided on the outside of the lower end of the fixed screw rod sleeve, and a locking nut is provided below the spring, and a spring groove is provided inside the nut locking limit sleeve, and the upper end of the spring is in contact with the spring groove, and the lower end of the spring is in contact with the locking nut.

[0007] Preferably, the external fixing sleeve of the fixed screw rod is provided with a stiffening mechanism, and the stiffening mechanism is provided with a seismic connecting frame on the side and rear side away from the spiral duct clamp, and the lower end of the seismic connecting frame is fixedly connected to the upper fixed channel steel through a seismic connecting seat.

[0008] Preferably, worm grooves are symmetrically arranged inside both sides of the lower fixed channel steel, a balancing weight block driving rod is arranged above the balancing weight block sliding rod, one end of the balancing weight block driving rod is integrally connected with a worm, and the worm is located inside the worm groove, and the end of the balancing weight block driving rod away from the worm is fixedly connected to the balancing weight block connecting seat.

[0009] Preferably, a turbine is provided at the front end of the worm, and the turbine is meshingly connected to the worm, a balancing weight drive motor is fixedly provided below the lower fixed channel steel, and the output end of the balancing weight drive motor is transmission-connected to the turbine, and the balancing weight drive rod is slidingly connected to the worm groove, the balancing weight drive motor is electrically connected to the PLC module, and the level sensor is electrically connected to the PLC module.

[0010] The lock hole that is fixed on the nut locking limit sleeve is provided with four nut locking limit sleeve sliding blocks, and the two ends of the lower fixing channel steel have nut locking limit sleeve sliding grooves, and the nut locking limit sleeve sliding grooves are slidably connected to the nut locking limit sleeve sliding block, and the upper end of the fixing screw rod sleeve is provided with a fixing screw rod cap, and the fixing screw rod sleeve cap is symmetrically provided with a fixing screw rod sleeve plate, and the fixing screw rod sleeve plate is an arc plate. The front end of the fixing screw rod sleeve plate is symmetrically provided with two fixing screw rod sleeve limiting blocks, and the distance between the two fixing screw rod limiting blocks is less than the width of the fixing screw rod installation slot, the width of the fixing screw rod installation slot is greater than the width of the fixing screw rod, the width between the center positions of the outer end faces of the two fixing screw rod sleeve plates and the outer diameter of the spring, and the width between the center positions of the inner end faces of the two fixing screw rod sleeve plates is greater than the diameter of the fixing screw rod.

[0011] Preferably, a fixed screw sleeve limit block groove is opened at the center position of the upper end of the nut locking limit sleeve, and the fixed screw sleeve limit block groove is slidingly connected to the fixed screw sleeve limit block, and the width of the fixed screw sleeve plate is greater than the width of the fixed screw installation groove.

[0012] Preferably, rubber pads are provided between the upper end of the rectangular air duct and the upper fixed channel steel and between the lower end of the rectangular air duct and the lower fixed channel steel, and the two sides of the lower end of the rectangular air duct are fixedly connected to the lower fixed channel steel through a right-angle limiting mechanism.

[0013] Preferably, a right-angle limit block is provided on the right-angle limit mechanism, and the right-angle limit block is a right-angle block. An airbag is provided between one end of the right-angle limit block close to the rectangular air duct and the rectangular air duct, and the lower end of the right-angle limit block is fixedly connected to the lower fixed channel steel by bolts.

[0014] A method for using an air duct positioning device for an assembled building, comprising the following steps:

[0015] Step 1: Drill holes symmetrically on the wall according to the designed centerline of the air duct, install expansion screws in the holes, install fixed screw joints at the lower ends of the expansion screws, securely connect the upper fixed channel steel and the fixed screw with bolts, and securely install the seismic connection seats on one side and the rear side above the upper fixed channel steel;

[0016] Step 2: Place the spiral duct clamp on top of the upper fixed channel steel, fix the spiral duct to the upper fixed channel steel with bolts through the spiral duct clamp, place the rectangular duct in the middle position below the upper fixed channel steel, and install the lower fixed channel steel below the rectangular duct. Before installing the lower fixed channel steel, first put the fixed screw sleeve, spring and locking nut of the seismic nut locking mechanism above the lower fixed channel steel to the outside of the fixed screw, then install the lower fixed channel steel into the fixed screw, and install the fixed screw sleeve, spring and locking nut of the lower seismic nut locking mechanism below the lower fixed channel steel. At this time, align the nut locking limit sleeve sliding block of the nut locking limit sleeve with the nut locking limit sleeve sliding groove and slide it in, so that the fixed screw rod and the fixed screw rod sleeve plate enter the inside of the fixed screw rod installation groove, so that the center of the fixed screw rod coincides with the center of the nut locking limit sleeve. At this time, rotate the fixed screw rod sleeve to allow the fixed screw rod sleeve limit block to be placed inside the fixed screw rod sleeve limit block groove. At the same time, the fixed screw rod sleeve plate is placed on the left and right sides of the fixed screw rod, and the spring is placed between the inner wall of the spring groove and the locking nut. Install the anti-seismic nut locking mechanism below through the above steps;

[0017] Step 3: Drill mounting holes for the seismic connection frame on the wall according to the position of the seismic connection seat, install expansion screws in the holes, and install the channel steel of the seismic connection frame with bolts;

[0018] Step 4: Install the stiffening mechanism by bolting;

[0019] Step 5: Install the right-angle limit mechanism on both sides of the rectangular air duct, place the right-angle limit blocks on both sides of the rectangular air duct and make one side of the air bag fit tightly with the side end face of the rectangular air duct, fix the right-angle limit blocks with bolts, and fix the spiral air duct clamp with bolts;

[0020] Step 6: Measure the horizontal angle of the lower fixed channel steel through the horizontal sensor. When the weight of the installed spiral duct is different, the duct positioning device will be unevenly stressed, causing a slight tilt. When the horizontal sensor detects the tilt, it will be sent to the PLC module. The PLC module controls the balancing weight drive motor in the tilt direction to drive the turbine to rotate. The turbine drives the worm to slide. The worm drives the balancing weight drive rod and the balancing weight connecting seat to the balancing weight to slide inward until the measured angle monitored by the horizontal sensor returns to the horizontal.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention fastens and installs the locking nut by arranging an anti-seismic nut locking mechanism. First, the nut locking limit sleeve is slidably connected to the nut locking limit sleeve sliding block and the nut locking limit sleeve sliding groove to limit the vertical position of the nut locking limit sleeve, and the upper limit is limited from above the spring. The spring can flexibly press the locking nut to prevent the locking nut from loosening. The horizontal rotation is achieved by fixing the screw sleeve limit block groove and the fixed screw sleeve limit block, so that the fixed screw sleeve plate is placed on both sides of the fixed screw, thereby preventing the fixed screw from being loosened. The fixed screw is loosened from the fixed screw mounting slot, which ensures the stability of the anti-seismic nut locking mechanism. At the same time, the setting of the rubber pad can buffer the vibration of the air duct and the noise generated by the vibration. At the same time, the setting of the airbag allows the right-angle limit block to flexibly press the rectangular air duct, while protecting the rectangular air duct and reducing the transmission of the air duct vibration to the right-angle limit block. It solves the problem that the rough and uneven joints between the air duct and the inner surface of the fan casing will cause tearing sounds, and since the connected air ducts will resonate, long-term vibration will cause the bolts of the air duct positioning device to loosen, causing the air duct to fall.

[0023] 2. The present invention measures the horizontal angle of the lower fixed channel steel through a horizontal sensor. When the weight of the installed spiral air duct is different, the air duct positioning device will be unevenly stressed, causing a slight tilt. When the horizontal sensor detects the tilt, it is sent to the PLC module. The PLC module controls the balancing weight drive motor in the tilt direction to drive the turbine to rotate, and the turbine drives the worm to slide. The worm drives the balancing weight drive rod and the balancing weight connecting seat to slide inward, or causes the balancing weight on the non-tilted side to move outward until the angle monitored by the horizontal sensor returns to a horizontal state. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a partial structural diagram of the lower fixed channel steel in the present invention;

[0026] Figure 3 For the present invention Figure 1 A partial enlarged view of area A;

[0027] Figure 4 This is a three-dimensional exploded view of the fixed screw sleeve and the spring groove in the present invention;

[0028] Figure 5 For the present invention Figure 1 A partial enlarged view of area B;

[0029] Figure 6 It is a bottom view of the nut locking limit sleeve in the present invention.

[0030] Figure: 1. Upper fixed channel steel; 2. Lower fixed channel steel; 3. Rectangular air duct; 4. Spiral air duct clamp; 5. Seismic connecting frame; 6. Seismic connecting seat; 7. Stiffening mechanism; 8. Fixed screw; 9. Right-angle limit mechanism; 10. Balancing weight sliding rod; 11. Balancing weight; 12. Level sensor; 13. Seismic nut locking mechanism; 14. Balancing weight drive rod; 15. Worm; 16. Turbine; 17. Balancing weight drive motor; 18. Worm slot; 19. Balancing weight connection Seat; 20. Nut locking limit sleeve; 21. Fixed screw sleeve; 22. Spring slot; 23. Nut locking limit sleeve sliding block; 24. Nut locking limit sleeve sliding slot; 25. Spring; 26. Locking nut; 27. Fixed screw sleeve cap; 28. Fixed screw sleeve plate slide slot; 29. ​​Fixed screw sleeve plate; 30. Fixed screw mounting slot; 31. Right-angle limit block; 32. Rubber pad; 33. Airbag; 34. PLC module; 35. Fixed screw sleeve limit block slot; 36. Fixed screw sleeve limit block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] See also Figure 1-6 , an embodiment provided by the present invention: an air duct positioning device for assembled buildings, comprising an upper fixed channel steel 1 and a fixed screw rod 8, the outer portion of the fixed screw rod 8 is fixedly installed with the upper fixed channel steel 1 by a nut, a lower fixed channel steel 2 is provided below the upper fixed channel steel 1, a spiral air duct clamp 4 is fixedly installed on the upper end surface of the upper fixed channel steel 1, a rectangular air duct 3 is provided between the upper fixed channel steel 1 and the lower fixed channel steel 2, balancing and sinking block sliding rods 10 are symmetrically provided on both sides of the lower fixed channel steel 2, a balancing and sinking block sliding rod 10 is provided below the balancing and sinking block sliding rod 10, a balancing and sinking block connecting seat 19 is provided on the upper end of the balancing and sinking block 11, and the balancing and sinking block connecting seat 19 is slidably connected to the balancing and sinking block sliding rod 10 The front ends of the lower fixed channel steel 2 are respectively provided with a level sensor 12 and a PLC module 34, and an anti-seismic nut locking mechanism 13 is provided at the connection between the fixed screw rod 8 and the lower fixed channel steel 2. The outer end of the anti-seismic nut locking mechanism 13 is provided with a nut locking limit sleeve 20, and one side of the nut locking limit sleeve 20 is provided with a fixed screw rod mounting groove 30. The internal movement of the nut locking limit sleeve 20 is provided with a fixed screw rod sleeve 21, and the outside of the lower end of the fixed screw rod sleeve 21 is provided with a spring 25, and a locking nut 26 is provided below the spring 25. The inside of the nut locking limit sleeve 20 is provided with a spring groove 22, and the upper end of the spring 25 is in contact with the spring groove 22, and the lower end of the spring 25 is in contact with the locking nut 26.

[0033] See also Figure 1The external fixing sleeve of the fixed screw rod 8 is provided with a stiffening mechanism 7, and the stiffening mechanism 7 is provided with a seismic connecting frame 5 on the side and rear side away from the spiral duct clamp. The lower end of the seismic connecting frame 5 is fixedly connected to the upper fixed channel steel 1 through a seismic connecting seat 6, and the fixed connection of the two ends of the seismic connecting frame 5 can be achieved through the seismic connecting seat 6.

[0034] See also Figure 1 and Figure 2 Worm grooves 18 are symmetrically arranged on both sides of the lower fixed channel steel 2, and a balancing weight driving rod 14 is arranged above the balancing weight sliding rod 10. One end of the balancing weight driving rod 14 is integrally connected with a worm 15, and the worm 15 is located inside the worm groove 18. The end of the balancing weight driving rod 14 away from the worm 15 is fixedly connected to the balancing weight connecting seat 19, and the meshing connection between the worm 15 and the turbine 16 causes the balancing weight 11 to slide on the balancing weight sliding rod 10, so that the center of gravity of the device can be adjusted.

[0035] See also Figure 1 and Figure 2 A turbine 16 is provided at the front end of the worm 15, and the turbine 16 is meshed with the worm 15. A balancing weight driving motor 17 is fixedly provided below the lower fixed channel steel 2, and the output end of the balancing weight driving motor 17 is transmission-connected to the turbine 16, and the balancing weight driving rod 14 is slidingly connected to the worm groove 18. The balancing weight driving motor 17 is electrically connected to the PLC module 34, and the horizontal sensor 12 is electrically connected to the PLC module 34. The horizontal sensor 12 detects the horizontal state of the device, and drives the balancing weight driving motor 17 through the PLC module 34 to cause the balancing weight 11 to slide, so that the horizontal sensor 12 detects the device to maintain a horizontal state under force.

[0036] See also Figure 1 、 Figure 3-4 and Figure 6The lower end of the nut locking limit sleeve 20 is annularly fixed with four nut locking limit sleeve sliding blocks 23, and both ends of the lower fixed channel steel 2 are provided with nut locking limit sleeve sliding grooves 24, and the nut locking limit sleeve sliding grooves 24 are slidably connected with the nut locking limit sleeve sliding blocks 23, and the upper end of the fixed screw rod sleeve 21 is provided with a fixed screw rod sleeve cap 27, and the lower end of the fixed screw rod sleeve cap 27 is symmetrically provided with a fixed screw rod sleeve plate 29, and the fixed screw rod sleeve plate 29 is an arc-shaped plate, and the front end of the fixed screw rod sleeve plate 29 is symmetrically provided with two fixed screw rods. The rod sleeve limit block 36, and the distance between the two fixed screw sleeve limit blocks 36 is smaller than the width of the fixed screw mounting groove 30, the width of the fixed screw mounting groove 30 is greater than the fixed screw 8, the width between the center positions of the outer end faces of the two fixed screw sleeve plates 29 and the outer diameter of the spring 25, and the width between the center positions of the inner end faces of the two fixed screw sleeve plates 29 is greater than the diameter of the fixed screw 8, and a fixed screw sleeve plate slide groove 28 is provided on the outside of the fixed screw sleeve 21, and the diameter of the fixed screw sleeve 21 is greater than the diameter of the fixed screw 8.

[0037] See also Figure 3 and Figure 4 A fixed screw sleeve limit block groove 35 is opened at the center position of the upper end of the nut locking limit sleeve 20, and the fixed screw sleeve limit block groove 35 is slidingly connected to the fixed screw sleeve limit block 36, and the width of the fixed screw sleeve plate 29 is greater than the width of the fixed screw mounting groove 30.

[0038] See also Figure 1 and Figure 5 A rubber pad 32 is arranged between the upper end of the rectangular air duct 3 and the upper fixed channel steel 1, and between the lower end of the rectangular air duct 3 and the lower fixed channel steel 2. The setting of the rubber pad 32 can buffer the vibration of the air duct and the noise generated by the vibration. The two sides of the lower end of the rectangular air duct 3 and the lower fixed channel steel 2 are fixedly connected by a right-angle limit mechanism 9.

[0039] See also Figure 1 and Figure 5 A right-angle limit block 31 is provided on the right-angle limit mechanism 9, and the right-angle limit block 31 is a right-angle block. An air bag 33 is provided between the end of the right-angle limit block 31 close to the rectangular air duct 3 and the rectangular air duct 3. The setting of the air bag 33 improves the flexible fixation between the right-angle limit block 31 and the rectangular air duct 3, and the lower end of the right-angle limit block 31 is fixed to the lower fixed channel steel 2 by bolts.

[0040] A method for using an air duct positioning device for an assembled building, comprising the following steps:

[0041] Step one: according to the design of the wind pipe center line on the wall symmetry hole, install expansion screw in the hole, install fixed screw 8 joint at the lower end of the expansion screw, connect the upper fixed channel steel 1 and the fixed screw 8 through bolt, install the anti-seismic connecting seat 6 on the upper fixed channel steel 1;

[0042] Step two: place the spiral duct clamp 4 above the upper fixed channel steel 1, fix the spiral duct with the upper fixed channel steel 1 through the bolt of the spiral duct clamp 4, place the rectangular duct 3 below the upper fixed channel steel 1, install the lower fixed channel steel 2 below the rectangular duct 3, before installing the lower fixed channel steel 2, first install the fixed screw sleeve 21, spring 25 and locking nut 26 of the anti-seismic nut locking mechanism 13 above the lower fixed channel steel 2 outside the fixed screw 8, then install the lower fixed channel steel 2 into the fixed screw 8, install the fixed screw sleeve 21, spring 25 and locking nut 26 of the lower anti-seismic nut locking mechanism 13 below the lower fixed channel steel 2, at this time, align the nut locking limit sleeve sliding block 23 with the nut locking limit sleeve sliding groove 24 and slide into the nut locking limit sleeve 20, let the fixed screw 8 and the fixed screw sleeve plate 29 enter the inside of the fixed screw installation groove 30, so that the center of the fixed screw 8 coincides with the center of the nut locking limit sleeve 20, at this time, rotate the fixed screw sleeve 21 to make the fixed screw sleeve limit block 36 inside the fixed screw sleeve limit block groove 35, at the same time, the fixed screw sleeve plate 29 is placed on the left and right sides of the fixed screw 8, the spring 25 is placed between the spring groove 22 inner wall and the locking nut 26, through the above steps to install the lower anti-seismic nut locking mechanism 13;

[0043] Step three: according to the position of the anti-seismic connecting seat 6, drill the installation hole of the anti-seismic connecting frame 5 on the wall, install the expansion screw in the hole, install the channel steel of the anti-seismic connecting frame 5 through the bolt;

[0044] Step four: install the stiffening mechanism 7 through the bolt;

[0045] Step five: install the right angle limiting mechanism 9 on both sides of the rectangular duct 3, place the right angle limiting block 31 on both sides of the rectangular duct 3 and make one side of the air bag 33 tightly contact with the side end face of the rectangular duct 3, fix the right angle limiting block 31 through the bolt, fix the spiral duct clamp 4 through the bolt;

[0046] Step six: Measure the horizontal angle of the lower fixed channel steel 2 through the horizontal sensor 12. When the weight of the installed spiral air duct is different, the air duct positioning device will be unevenly stressed, causing a slight tilt. When the horizontal sensor 12 detects the tilt, it is sent to the PLC module 34. The PLC module 34 controls the balancing weight driving motor 17 in the tilting direction to drive the turbine 16 to rotate. The turbine 16 drives the worm 15 to slide. The worm 15 drives the balancing weight driving rod 14 and the balancing weight connecting seat 19 to slide inwardly to the balancing weight 11 until the measured angle monitored by the horizontal sensor 12 returns to the horizontal.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A duct positioning device for assembled buildings, comprising an upper fixed channel steel (1) and a fixed screw rod (8), characterized in that: The outer portion of the fixed screw rod (8) is fixedly mounted with an upper fixed channel steel (1) through a nut, a lower fixed channel steel (2) is provided below the upper fixed channel steel (1), a spiral duct clamp (4) is fixedly mounted on the upper end face of the upper fixed channel steel (1), a rectangular duct (3) is provided between the upper fixed channel steel (1) and the lower fixed channel steel (2), a balancing sinker sliding rod (10) is symmetrically provided on both sides of the lower fixed channel steel (2), a balancing sinker (11) is provided below the balancing sinker sliding rod (10), a balancing sinker connecting seat (19) is provided at the upper end of the balancing sinker (11), and the balancing sinker connecting seat (19) is slidably connected to the balancing sinker sliding rod (10), and the lower fixed screw rod (8) is fixedly mounted with a spiral duct clamp (4), a rectangular duct (3) is provided between the upper fixed channel steel (1) and the lower fixed channel steel (2), and ... and a balancing sinker sliding rod (10) is symmetrically provided with a balancing sinker sliding rod (10), and a balancing sinker connecting seat (19) is slidably connected to the balancing sinker sliding rod (10). The front end of the fixed channel steel (2) is respectively provided with a level sensor (12) and a PLC module (34); the connection between the fixed screw rod (8) and the lower fixed channel steel (2) is provided with an anti-seismic nut locking mechanism (13); the outer end of the anti-seismic nut locking mechanism (13) is provided with a nut locking limit sleeve (20); one side of the nut locking limit sleeve (20) is provided with a fixed screw rod installation groove (30); the interior of the nut locking limit sleeve (20) is movably provided with a fixed screw rod sleeve (21); the outer portion of the lower end of the fixed screw rod sleeve (21) is provided with a spring (25); a locking nut (26) is provided below the spring (25); and the interior of the nut locking limit sleeve (20) is provided with a spring groove (22). , the upper end of the spring (25) is fitted with the spring slot (22), and the lower end of the spring (25) is fitted with the locking nut (26), the external fixed sleeve of the fixed screw (8) is provided with a stiffening mechanism (7), the stiffening mechanism (7) is provided with an anti-seismic connecting frame (5) on the side and rear side away from the spiral duct clamp (4), the lower end of the anti-seismic connecting frame (5) is fixedly connected to the upper fixed channel steel (1) through an anti-seismic connecting seat (6), the inner sides of the lower fixed channel steel (2) are symmetrically provided with worm grooves (18), the upper side of the balancing weight block sliding rod (10) is provided with a balancing weight block driving rod (14), one end of the balancing weight block driving rod (14) is integrally connected with a worm (15), and the worm ( 15) is located inside the worm groove (18), the end of the balancing weight driving rod (14) away from the worm (15) is fixedly connected to the balancing weight connecting seat (19), the front end of the worm (15) is provided with a turbine (16), and the turbine (16) is meshed with the worm (15), a balancing weight driving motor (17) is fixedly provided below the lower fixed channel steel (2), and the output end of the balancing weight driving motor (17) is transmission-connected with the turbine (16), and the balancing weight driving rod (14) is slidingly connected to the worm groove (18), the balancing weight driving motor (17) is electrically connected to the PLC module (34), and the level sensor (12) is electrically connected to the PLC module (34),A rubber pad (32) is provided between the upper end of the rectangular air duct (3) and the upper fixed channel steel (1), and between the lower end of the rectangular air duct (3) and the lower fixed channel steel (2). Both sides of the lower end of the rectangular air duct (3) and the lower fixed channel steel (2) are fixedly connected via a right-angle limiting mechanism (9). A right-angle limiting block (31) is provided on the right-angle limiting mechanism (9), and the right-angle limiting block (31) is a right-angle block. An air bag (33) is provided between one end of the right-angle limiting block (31) close to the rectangular air duct (3) and the rectangular air duct (3), and the lower end of the right-angle limiting block (31) and the lower fixed channel steel (2) are fixedly connected via bolts.

2. The air duct positioning device for an assembled building according to claim 1, characterized in that: The lower end of the nut locking limit sleeve (20) is annularly fixed with four nut locking limit sleeve sliding blocks (23), and the two ends of the lower fixed channel steel (2) are provided with nut locking limit sleeve sliding grooves (24), and the nut locking limit sleeve sliding grooves (24) are slidably connected with the nut locking limit sleeve sliding blocks (23), the upper end of the fixed screw rod sleeve (21) is provided with a fixed screw rod sleeve cap (27), the lower end of the fixed screw rod sleeve cap (27) is symmetrically provided with a fixed screw rod sleeve plate (29), and the fixed screw rod sleeve plate (29) is an arc-shaped plate, and the front end of the fixed screw rod sleeve plate (29) is symmetrically provided with two fixed screw rods. A rod sleeve limit block (36) is provided, and the distance between the two fixed screw sleeve limit blocks (36) is smaller than the width of the fixed screw installation slot (30), the width of the fixed screw installation slot (30) is larger than the width of the fixed screw (8), the width between the center positions of the outer end faces of the two fixed screw sleeve plates (29) and the outer diameter of the spring (25), and the width between the center positions of the inner end faces of the two fixed screw sleeve plates (29) is larger than the diameter of the fixed screw (8), the outside of the fixed screw sleeve (21) is provided with a fixed screw sleeve plate slide groove (28), and the diameter of the fixed screw sleeve (21) is larger than the diameter of the fixed screw (8).

3. The air duct positioning device for an assembled building according to claim 2, characterized in that: A fixed screw sleeve limiting block groove (35) is provided at the center position of the upper end of the nut locking limiting sleeve (20), and the fixed screw sleeve limiting block groove (35) is slidably connected to the fixed screw sleeve limiting block (36), and the width of the fixed screw sleeve plate (29) is greater than the width of the fixed screw installation groove (30).

4. A method for using the air duct positioning device for an assembled building according to claim 3, characterized in that: The following steps are involved: Step 1: Drill holes symmetrically on the wall according to the designed center line of the air duct, install expansion screws in the holes, install the fixed screw rod (8) joint at the lower end of the expansion screw, fix the upper fixed channel steel (1) and the fixed screw rod (8) with bolts, and fix the seismic connection seats (6) on one side and the rear side above the upper fixed channel steel (1); Step 2: Place the spiral duct clamp (4) above the upper fixed channel steel (1), and fix the spiral duct to the upper fixed channel steel (1) with bolts through the spiral duct clamp (4). Place the rectangular duct (3) at the middle position below the upper fixed channel steel (1), and install the lower fixed channel steel (2) below the rectangular duct (3). Before installing the lower fixed channel steel (2), first put the fixed screw rod sleeve (21), spring (25) and locking nut (26) of the anti-seismic nut locking mechanism (13) above the lower fixed channel steel (2) onto the outside of the fixed screw rod (8), then install the lower fixed channel steel (2) into the fixed screw rod (8), and install the fixed screw rod sleeve (21), spring (25) and locking nut (26) of the lower anti-seismic nut locking mechanism (13) below the lower fixed channel steel (2). Nut (26), at this time, align the nut locking limit sleeve sliding block (23) of the nut locking limit sleeve (20) with the nut locking limit sleeve sliding groove (24) and slide it in, so that the fixed screw rod (8) and the fixed screw rod sleeve plate (29) enter the interior of the fixed screw rod installation groove (30), so that the center of the fixed screw rod (8) coincides with the center of the nut locking limit sleeve (20), and at this time rotate the fixed screw rod sleeve (21) to allow the fixed screw rod sleeve limit block (36) to be placed inside the fixed screw rod sleeve limit block groove (35), and at the same time, the fixed screw rod sleeve plate (29) is placed on the left and right sides of the fixed screw rod (8), and the spring (25) is placed between the inner wall of the spring groove (22) and the locking nut (26), and the anti-seismic nut locking mechanism (13) below is installed through the above steps; Step 3: Drill a mounting hole for the seismic connection frame (5) on the wall according to the position of the seismic connection seat (6), install expansion screws in the hole, and install the channel steel of the seismic connection frame (5) with bolts; Step 4: Install the stiffening mechanism (7) by bolting. Step 5: Install the right-angle limit mechanism (9) on both sides of the rectangular air duct (3), place the right-angle limit block (31) on both sides of the rectangular air duct (3) and make the air bag (33) on one side fit tightly with the side end surface of the rectangular air duct (3), fix the right-angle limit block (31) with bolts, and fix the spiral air duct clamp (4) with bolts; Step 6: The horizontal angle of the lower fixed channel steel (2) is measured by the horizontal sensor (12). When the weight of the installed spiral air duct is different, the air duct positioning device will be unevenly stressed, causing a slight tilt. When the horizontal sensor (12) detects the tilt, it is sent to the PLC module (34). The PLC module (34) controls the balancing and sinking block driving motor (17) in the tilting direction to drive the turbine (16) to rotate. The turbine (16) drives the worm (15) to slide. The worm (15) drives the balancing and sinking block driving rod (14) and the balancing and sinking block connecting seat (19) to slide the balancing and sinking block (11) inwardly until the measured angle monitored by the horizontal sensor (12) returns to the horizontal.

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