An air duct installation device and an installation method

Abstract

The present invention belongs to the technical field of air duct installation, and specifically discloses an air duct installation device, including: a hoisting unit, the hoisting unit includes a cross arm and two symmetrically arranged support hangers, both of the two support hangers include a lower suspension rod and an upper suspension rod fixed on the beam, and both ends of the cross arm are respectively connected to the two lower suspension rods; a connecting column is connected to the upper suspension rod, a support plate is connected to one side of the connecting column, a lower connecting piece is connected to the lower suspension rod, and the lower connecting piece can be lapped on the support plate to achieve limit; a docking unit, the docking unit is used to connect two adjacent air ducts. The present invention can shorten the working time of workers working at heights, thereby improving safety and installation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of air duct installation, and particularly relates to an air duct installation device and an installation method. Background Art

[0002] The volume and weight of the exhaust galvanized steel pipes in industrial plants are very large. The weight of a single galvanized air duct with a side length of 2000 can reach 65 kilograms. The actual installation height in the plant area is high, resulting in the situation that the scissor lift used to transport the air duct cannot pass through or reach some places in the plant area.

[0003] The traditional air duct installation method requires scaffolding to be erected at the installation site to overcome the problem of insufficient transportation height of the scissor lift and assist the construction workers to butt and install the air duct.

[0004] In addition, for large air ducts, an electric hoist needs to be pre-erected for hoisting. The installation process of the air duct is to install support brackets, prefabricate the support brackets on the steel structure beam, then hoist the prefabricated air duct to the installation position after processing, and then install the crossbeam, connect the two ends of the crossbeam to the support brackets, and then place the air duct on the installed crossbeam. The crossbeam and the support brackets play a supporting role for the air duct. Finally, it is necessary to butt the air ducts placed on the crossbeam, and the butt joint between the air ducts also needs to be carried out at a high place. When using the traditional scheme to install the crossbeam on the support brackets and butt the air ducts, workers need to use a rivet gun to drive rivets at the flange edges of the mutually butted air ducts. The above operations are all in the situation of working at heights, and usually multiple sets of crossbeams and support brackets need to be connected on site. The connection process is complex and troublesome, resulting in a long working time at heights, and thus the danger to workers is relatively greater. Summary of the Invention

[0005] The present invention provides an air duct installation device and an installation method, aiming to shorten the working time of workers at heights and improve safety.

[0006] The present invention is realized by the following technical solutions: An air duct installation device includes:

[0007] A hoisting unit, the hoisting unit includes a crossbeam and two symmetrically arranged support brackets. Both of the two support brackets include a lower suspension rod and an upper suspension rod fixed on the beam. The two ends of the crossbeam are respectively connected to the two lower suspension rods; a connecting column is connected to the upper suspension rod, a support plate is connected to one side of the connecting column, a lower connecting piece is connected to the lower suspension rod, and the lower connecting piece can be lapped on the support plate to achieve limit;

[0008] A butting unit, the butting unit is used to connect two adjacent air ducts.

[0009] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0010] In this solution, the structure of the support hanger in the hoisting unit is divided into two parts: the upper suspension rod and the lower suspension rod. During actual use, multiple hoisting units are required. One end of the upper suspension rod needs to be prefabricated on the beam of the steel structure or civil structure in the factory building in advance, and the connecting column and the support plate on the upper suspension rod are in a suspended state.

[0011] The lower suspension rod and the cross arm are pre-connected at the processing site. In this way, the air duct can be placed or fixed on the cross arm in advance, and then hoisted in batches by a crane. During the hoisting process, the cross arm and the air duct on the cross arm are hoisted to the installation position together, and the lower connecting piece on the lower suspension rod can be directly lapped on the support plate on the connecting column connected to the upper suspension rod, so as to realize the rapid connection of the upper suspension rod and the lower suspension rod, thus realizing the support of the air duct at high altitude. And there is no need to add additional construction steps at high altitude to connect the cross arm with the support hanger, which effectively shortens the time of high-altitude operation, and then effectively improves the installation efficiency and safety of workers for the air duct.

[0012] When the air duct is hoisted to the installation position and the upper suspension rod and the lower suspension rod are connected, the adjacent air ducts can be butted through the butting unit to complete the installation of the air duct.

[0013] Furthermore, the butting unit includes a first shear arm and a second shear arm which are arranged crosswise. The first shear arm and the second shear arm are rotatably connected. A spring is connected between the rear ends of the first shear arm and the second shear arm; perpendicular limit blocks are connected to the front ends of the first shear arm and the second shear arm respectively, and the two limit blocks are arranged back to back;

[0014] A first sliding block and a second sliding block are connected between the front ends of the first shear arm and the second shear arm. One end of the first sliding block is rotatably connected to the first shear arm, and one end of the second sliding block is rotatably connected to the second shear arm;

[0015] Arc-shaped sliding grooves are formed in both the first sliding block and the second sliding block. The other end of the second sliding block is connected with a sliding column, and the sliding column is inserted into the sliding groove of the first sliding block and can slide along the sliding groove of the first sliding block.

[0016] Beneficial effects: In this solution, the docking unit of this solution is pre-passed through the flange holes of the angle steel flange at one end of the air duct, and the first sliding block, the second sliding block and the limiting block at the front ends of the first shear arm and the second shear arm are passed through the flange holes. In this way, when two adjacent groups of air ducts are hoisted to the installation position, by pushing one group of air ducts, the two groups of air ducts will collide with each other, so that the front ends of the first shear arm and the second shear arm pass through the flange holes of the other group of air ducts. During the process of the front ends of the first shear arm and the second shear arm passing through the flange holes of the other group of air ducts, the side walls of the flange holes will squeeze the first shear arm and the second shear arm, causing the spring to be compressed and store energy.

[0017] When the first sliding block, the second sliding block and the limiting block at the front ends of the first shear arm and the second shear arm completely pass through the flange holes of the other group of air ducts, the side walls of the flange holes will release the pressure on the first shear arm and the second shear arm. At this time, the spring rebounds, causing the first shear arm and the second shear arm to unfold. At this time, the limiting blocks on the first shear arm and the second shear arm abut against the angle steel flange piece and lock the angle steel flange piece to achieve anti-locking, thus quickly connecting two adjacent groups of air ducts. In this way, there is no need to connect two groups of air ducts at high altitude, effectively improving the docking efficiency of the air ducts and at the same time improving the construction safety.

[0018] In this solution, when hoisting multiple pre-assembled groups of air ducts to a high place and the upper suspension rod and the lower suspension rod are overlapped with each other, when docking, there is no need to drive rivets. Only need to pass one end of the first shear arm and the second shear arm through the angle steel flange of the air duct, and then the angle steel flange can be fastened and fixed by the rebounding force of the spring, thus reducing the time of high-altitude operation and improving the construction safety and construction efficiency.

[0019] In this solution, the first sliding block and the second sliding block can slide relative to each other when the first shear arm and the second shear arm are compressed or released, so as to ensure the smooth unfolding or extrusion of the first shear arm and the second shear arm. Moreover, the first sliding block and the second sliding block are convenient for the first shear arm and the second shear arm to be compressed when the two groups of air ducts collide and pass through the flange holes of the other group of air ducts, and can lock the reverse compression force of the spring to make the limiting block buckle the flange, so as to quickly connect the two groups of air ducts.

[0020] Beneficial effects: In this solution, the docking unit of this solution is pre-passed through the flange holes of the angle steel flange at one end of the air duct, and the first sliding block, the second sliding block and the limiting block at the front ends of the first shear arm and the second shear arm are passed through the flange holes. In this way, when two adjacent groups of air ducts are hoisted to the installation position, by pushing one group of air ducts, the two groups of air ducts will collide with each other, so that the front ends of the first shear arm and the second shear arm pass through the flange holes of the other group of air ducts. During the process of the front ends of the first shear arm and the second shear arm passing through the flange holes of the other group of air ducts, the side walls of the flange holes will squeeze the first shear arm and the second shear arm, causing the spring to be compressed and store energy.

[0021] When the first sliding block, the second sliding block and the limiting block at the front ends of the first shear arm and the second shear arm completely pass through the flange holes of the other set of air ducts, the side walls of the flange holes will release the pressure on the first shear arm and the second shear arm. At this time, the spring rebounds, causing the first shear arm and the second shear arm to expand. At this time, the limiting blocks on the first shear arm and the second shear arm abut against the angle steel flange plate to fasten the angle steel flange plate to achieve anti-locking, thereby quickly connecting the two adjacent air ducts. In this way, there is no need to connect the two sets of air ducts at high altitude, effectively improving the docking efficiency of the air ducts and at the same time improving the construction safety.

[0022] In this solution, when hoisting multiple pre-assembled sets of air ducts to a high place and after the upper suspension rod and the lower suspension rod are overlapped with each other, when docking, there is no need to drive rivets. Only need to pass one end of the first shear arm and the second shear arm through the angle steel flange of the air duct, and then the angle steel flange can be fastened and fixed by the rebounding force of the spring, thus reducing the time of high-altitude operation and improving the construction safety and construction efficiency.

[0023] In this solution, the first sliding block and the second sliding block can slide relative to each other when the first shear arm and the second shear arm are compressed or released, so as to ensure the smooth expansion or extrusion of the first shear arm and the second shear arm. Moreover, the first sliding block and the second sliding block are convenient for the first shear arm and the second shear arm to be compressed when the two sets of air ducts are butted, so as to pass through the flange holes of the other set of air ducts, and can lock the reverse compression force of the spring to make the limiting block fasten the flange, thereby quickly connecting the two sets of air ducts.

[0024] Furthermore, the support plate is inclined with respect to the connecting column, and the included angle between the support plate and the connecting column is upward. The lower connecting member includes a connecting plate and a hanging plate. The connecting plate is vertically connected to the lower suspension rod. The hanging plate is inclined with respect to the connecting plate, and the included angle between the hanging plate and the connecting plate is downward.

[0025] Beneficial effects: In this solution, both the support plate and the hanging plate are inclined. In this way, when the hanging plate is hung on the support plate, there is a lateral limiting effect between them, which can make the overlapping more stable.

[0026] Furthermore, an upper guide plate is connected to the top end of the connecting column. A guiding opening is formed in the upper guide plate. The hanging plate passes through the guiding opening and is hung on the support plate.

[0027] Beneficial effects: The setting of the upper guide plate and the guiding opening in this solution can play a guiding and limiting role on both ends of the hanging plate after the hanging plate is hung on the support plate, preventing the hanging plate from sliding out of the support plate, thereby further improving the stability of the cooperation between the upper suspension rod and the lower suspension rod, and thus improving the stability of the support for the air duct.

[0028] Further, a lower guide plate is connected to the lower part of the connecting column. One end of the lower guide plate away from the connecting column is an arc-shaped concave surface. After the hanging plate is lapped on the support plate, the arc-shaped concave surface of the lower guide plate can contact the lower suspension rod.

[0029] Beneficial effects: In this solution, the arc-shaped concave surface on the lower guide plate can contact the outer side of the lower suspension rod. In this way, when the lower suspension rod and the upper suspension rod are lapped and matched, it plays a guiding role in the movement of the lower suspension rod. At the same time, it can also support the lower suspension rod after the upper suspension rod and the lower suspension rod are successfully lapped, thereby improving the stability after installation.

[0030] Further, the lower part of the connecting column is detachably connected to the lower part of the upper suspension rod, and the lower connecting piece is detachably connected to the upper part of the lower suspension rod.

[0031] Beneficial effects: With such a setting, it is more convenient to flexibly replace or install the connecting column and the lower connecting piece according to the actual usage situation.

[0032] Further, both the upper suspension rod and the lower suspension rod are threaded rods. Upper nuts are provided at the top and bottom ends of the connecting column. The upper suspension rod passes through the top and bottom ends of the connecting column in sequence, and both of the upper nuts are threadedly connected to the upper suspension rod. Lower nuts are provided at the top and bottom ends of the lower connecting piece. The lower suspension rod passes through the top and bottom ends of the lower connecting piece in sequence, and both of the lower nuts are threadedly connected to the lower suspension rod.

[0033] Beneficial effects: In this solution, the connecting column is limited on the upper suspension rod and the lower connecting piece is limited on the lower suspension rod by using the method of threading the nuts with the upper suspension rod and the lower suspension rod. This connection method is simple, fast, low-cost, and more convenient to operate. In addition, in this solution, both the upper suspension rod and the lower suspension rod are threaded rods, so the threaded parts on the upper suspension rod and the lower suspension rod are longer. During use, the positions of the two upper nuts and the two lower nuts can be adjusted according to actual needs, and the height positions of the connecting column and the lower connecting piece can be adjusted, which is more practical.

[0034] An air duct installation method uses the above-mentioned air duct installation device, and includes the following steps:

[0035] A. Determine the installation position: Set the pipeline route, and determine the number of groups of hoisting units and the number of groups of air ducts;

[0036] B. Install the hoisting unit: It includes the following steps,

[0037] B1. Install multiple upper suspension rods of multiple groups of hoisting units on the ceiling or beam in advance, so that the support plates on the two upper suspension rods in each group of hoisting units are arranged opposite to each other;

[0038] B2. Connect the crossbar and the lower suspension rod, and connect the two lower suspension rods in each group of hoisting units to the two ends of the crossbar respectively;

[0039] C. Assemble the air ducts: The number of air ducts in each group is greater than or equal to one section. First, connect and fix more than two single air ducts in each group of air ducts to form an integrated combined air duct.

[0040] D. Place the multiple groups of combined air ducts obtained in step C on the crossbeams in step B2 in sequence. Each group of combined air ducts is placed on the crossbeams of at least two hoisting units.

[0041] E. Hoist and fix: Use a crane to hoist the multiple groups of combined air ducts to the installation position in sequence, and make the lower connectors on the lower suspension rods in the same group of hoisting units correspondingly overlap on the support plates on the upper suspension rods to achieve position limitation.

[0042] F. Connect the air ducts: Connect and fix the adjacent combined air ducts hoisted to the installation position in step E through a docking unit.

[0043] Further, in step E, fix multiple lifting ropes on the crane to the crossbeams of multiple groups of hoisting units in sequence. Start the crane to lift the air ducts on the crossbeams and the lower suspension rods connected to the crossbeams upward and hoist them to the installation position. Manually assist in adjusting the position of the air ducts at the installation position to align the lower connectors on the lower suspension rods in the same group of hoisting units with the support plates on the upper suspension rods and overlap them on the support plates.

[0044] Further, the docking unit includes a first shear arm and a second shear arm that are arranged crosswise. The first shear arm and the second shear arm are rotatably connected. A spring is connected between the rear ends of the first shear arm and the second shear arm. Limiting blocks are perpendicularly connected to the front ends of the first shear arm and the second shear arm respectively. The two limiting blocks are arranged back to back.

[0045] A first sliding block and a second sliding block are connected between the front ends of the first shear arm and the second shear arm. One end of the first sliding block is rotatably connected to the first shear arm, and one end of the second sliding block is rotatably connected to the second shear arm.

[0046] Arc-shaped sliding grooves are formed in both the first sliding block and the second sliding block. A sliding column is connected to the other end of the second sliding block. The sliding column is inserted into the sliding groove of the first sliding block and can slide along the sliding groove of the first sliding block.

[0047] In step C, angle steel flanges are connected to both ends of the air ducts, and a plurality of flange holes are formed in the angle steel flanges. First, pass the front ends of the first shear arm and the second shear arm in the docking unit through the flange holes at one end of the combined air duct on the ground, and make the front ends of the first shear arm and the second shear arm on the same side as the end of the air duct.

[0048] In step F, by pushing two adjacent sets of combined air ducts, the two adjacent sets of combined air ducts are collided and connected with each other. The front ends of the first shear arm and the second shear arm on one set of combined air ducts are squeezed and pass through the flange holes at the end of the other set of combined air ducts, and then reset under the action of the spring. The limit blocks on the first shear arm and the second shear arm expand outwards and are buckled reversely on the angle steel flange to realize the connection of two adjacent sets of combined air ducts.

[0049] Beneficial effects: In the air duct installation method of the present invention, the above-mentioned air duct installation device is utilized. By increasing the pre-installation connection at a low altitude position on the ground, the support hanger is divided into an upper suspension rod and a lower suspension rod, so as to facilitate the connection of the lower suspension rod and the cross arm at a low altitude position on the ground first. When hoisted to the installation position, only need to lap the lower connecting piece of the lower suspension rod on the support plate of the upper suspension rod to realize the high-altitude support effect on the air duct. In addition, the adjacent air ducts can be quickly connected under the action of the docking unit through mutual collision, so that no additional connection steps are required, effectively shortening the high-altitude operation time.

[0050] Moreover, the installation method in this solution can hoist air ducts in batches at the same time, effectively saving time. And when transporting multiple air ducts, by pre-combining and connecting multiple air ducts at a low altitude position on the ground, the time and efficiency of high-altitude docking of air ducts in the later stage are shortened. Description of the Drawings

[0051] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0052] Figure 1 is a perspective view of multiple air ducts hoisted and installed in Embodiment 1 of an air duct installation device of the present invention;

[0053] Figure 2 is a perspective view of the hoisting unit in Embodiment 1 of an air duct installation device of the present invention;

[0054] Figure 3 is a schematic diagram of the state of single air duct installation and docking in Embodiment 1 of an air duct installation device of the present invention;

[0055] Figure 4 is a perspective view of two air ducts hoisted and installed in Embodiment 2 of an air duct installation device of the present invention;

[0056] Figure 5 is a schematic diagram of the state of the installation process of adjacent air ducts being docked after two air ducts are hoisted in Embodiment 2 of an air duct installation device of the present invention;

[0057] Figure 6 is a partial perspective view of the angle steel flange installed at the end of the air duct in Embodiment 2 of an air duct installation device of the present invention;

[0058] Figure 7 This is a three-dimensional view of the first shear arm and the second shear arm in the docking unit of Embodiment 2 of an air duct installation device of the present invention after being unfolded;

[0059] Figure 8 This is a schematic diagram of the state of the first shear arm and the second shear arm in the docking unit of Embodiment 2 of an air duct installation device of the present invention after being extruded by the flange holes;

[0060] Figure 9 This is a schematic diagram of the instantaneous state when the front ends of the first shear arm and the second shear arm pass through the flange holes of the angle steel flange at the end of another group of air ducts during the mutual butting process of two adjacent air ducts in Embodiment 2 of an air duct installation device of the present invention.

[0061] Marks in the drawings and corresponding component names:

[0062] Beam 1, air duct 2, angle steel flange 3, flange hole 301, upper suspension rod 401, lower suspension rod 402, lower guide plate 403, upper guide plate 404, connecting column 405, guiding port 406, support plate 407, hanging plate 408, connecting plate 409, cross arm 5, shear fork lock 7, first shear arm 701, limit block 702, second shear arm 703, spring 704, connecting block 705, first sliding block 706, second sliding block 707, sliding column 708, rotating shaft 709. Detailed implementation manners

[0063] To make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with embodiments and drawings. The illustrative embodiments and descriptions thereof of the present invention are only used to explain the present invention and do not limit the present invention.

[0064] Embodiment 1

[0065] As Figures 1 - 3 shown, Embodiment 1 of the present invention provides an air duct installation device, including: a hoisting unit, the hoisting unit includes a cross arm 5 and two symmetrically arranged support brackets. Both support brackets include a lower suspension rod 402 and an upper suspension rod 401 fixed on the beam 1. The two ends of the cross arm 5 are respectively connected to the two lower suspension rods 402. The cross arm 5 and the lower suspension rod 402 can be fixedly connected by welding, and they can also be connected in a detachable manner. In this embodiment, the lower suspension rod 402 and the cross arm 5 are detachably connected. Specifically: in this embodiment, threaded through holes are opened at positions near the two ends of the cross arm 5 in the length direction thereof. The lower suspension rod 402 passes through the threaded through holes and is in threaded cooperation with the threaded through holes, so as to realize the threaded connection between the lower suspension rod 402 and the cross arm 5. This connection method is simple and convenient, and is convenient for disassembly and replacement, and is more practical.

[0066] Combined with Figure 2As shown, a connecting column 405 is connected to the upper suspension rod 401, and a support plate 407 is connected to one side of the connecting column 405. In this embodiment, the two support plates 407 in a set of hoisting units are symmetrically arranged, which is convenient for later lapping with the lower suspension rod 402. In this embodiment, the connecting column 405 has a cuboid structure, the support plate 407 is a rectangular plate, the support plate 407 is inclined with respect to the connecting column 405, and the included angle between the support plate 407 and the connecting column 405 is upward. In this embodiment, the support plate 407 and the connecting column 405 are fixed by welding.

[0067] A lower connecting piece is connected to the lower suspension rod 402, and the lower connecting piece can be lapped on the support plate 407 to achieve limit. Specifically: in this embodiment, the lower connecting piece includes a connecting plate 409 and a hanging plate 408. The connecting plate 409 is vertically connected to the lower suspension rod 402, the hanging plate 408 is inclined with respect to the connecting plate 409, and the hanging plate 408 is integrally formed or welded and fixed with the connecting plate 409. The included angle between the hanging plate 408 and the connecting plate 409 is downward, and the hanging plate 408 is a rectangular plate.

[0068] In this embodiment, an upper guide plate 404 is connected to the top end of the connecting column 405. A guide opening 406 is formed in the upper guide plate 404. The guide opening 406 is in the shape of a rectangular opening. The hanging plate 408 can pass through the guide opening 406 and lap on the support plate 407. The setting of the guide opening 406 can play a role in guiding and limiting the hanging plate 408, avoiding the hanging plate 408 from sliding out from both sides of the support plate 407, thereby improving the stability after the upper suspension rod 401 and the suspension rod are lapped with each other. In addition, when the hanging plate 408 laps on the support plate 407, the bottom end of the hanging plate 408 is located below the support plate 407, so that most of the hanging plate 408 and the support plate 407 can overlap with each other, which can improve the stability between the upper suspension rod 401 and the lower suspension rod 402.

[0069] In this embodiment, a lower guide plate 403 is vertically connected to the lower part of the connecting column 405. In this embodiment, the lower guide plate 403 and the connecting column 405 are fixed by welding. The end of the lower guide plate 403 away from the connecting column 405 is an arc-shaped concave surface, and the arc-shaped concave surface on the lower guide plate 403 and the guide opening 406 on the upper guide plate 404 are located on the same side. After the hanging plate 408 laps on the support plate 407, the arc-shaped concave surface of the lower guide plate 403 can contact the lower suspension rod 402, which can play a role in supporting the lower suspension rod 402 and keeping the lower suspension rod 402 stable.

[0070] The connecting column 405 and the upper suspension rod 401 can be fixedly connected (such as by welding) or detachably connected. In this embodiment, the lower part of the connecting column 405 and the upper suspension rod 401 are detachably connected. Specifically: upper nuts are provided at both the top and bottom of the connecting column 405. A vertically arranged through hole is formed in the connecting column 405. The upper suspension rod 401 passes through the top and bottom of the connecting column 405 in sequence. Both upper nuts are threadedly connected to the upper suspension rod 401. By rotating the two upper nuts, the two upper nuts are tightened against the upper guide plates 404 at the bottom and top of the connecting column 405 respectively, thereby realizing the connection between the connecting column 405 and the upper suspension rod 401.

[0071] The lower connecting member and the upper part of the lower suspension rod 402 can also be fixedly connected or detachably connected. In this embodiment, the lower connecting member and the upper part of the lower suspension rod 402 are detachably connected. Specifically: lower nuts are provided at both the top and bottom of the lower connecting member. The lower suspension rod 402 passes through the top and bottom of the lower connecting member in sequence. In this embodiment, the two lower nuts are respectively located at the top and bottom of the connecting plate 409, and both lower nuts are threadedly connected to the lower suspension rod 402. By tightening the two lower nuts, the connecting plate 409 is fixed on the lower suspension rod 402.

[0072] In this embodiment, both the upper suspension rod 401 and the lower suspension rod 402 are threaded rods, which can increase the length of the threaded parts on the upper suspension rod 401 and the lower suspension rod 402, so that the range of adjusting the positions of the connecting column 405 and the connecting plate 409 is larger. In this way, after lifting the air duct 2 and connecting the upper suspension rod 401 and the lower suspension rod 402, or before lifting the air duct 2, the positions of the connecting column 405 and the lower connecting member in the axial directions of the upper suspension rod 401 and the lower suspension rod 402 can be adjusted according to the actual situation, so as to realize adjusting the height of the air duct 2 at the installation position according to the actual situation on site and the size of the air duct 2, which is more practical.

[0073] An air duct installation device in this embodiment further includes a docking unit. The docking unit is used to connect two adjacent air ducts 2. The docking unit in this embodiment is a rivet.

[0074] A method for installing an air duct is also disclosed in this embodiment. This installation method requires the use of the above-mentioned air duct installation device, and includes the following steps:

[0075] A. Determine the installation position: Set the pipeline routing, determine the number of groups of the hoisting units and the number of groups of the air ducts 2. Specifically: Use the BIM technology in the existing technology to divide the pipeline routing in advance, understand how many sections of air ducts 2 are required for installing one installation line, how many supports and hangers need to be installed, and then select the corresponding number of multiple groups of hoisting units according to the actual situation;

[0076] B. Install the hoisting unit: It includes the following steps.

[0077] B1. Install multiple upper suspension rods 401 in a group of hoisting units in advance on the ceiling or steel structure beam 1. Specifically: two upper suspension rods 401 in each group of hoisting units are symmetrically installed on the beam 1 of the steel structure or civil engineering structure, so that the support plates 407 on the two upper suspension rods 401 in each group of hoisting units are arranged opposite to each other;

[0078] B2. Connect the cross arm 5 with the lower suspension rod 402. Connect the two lower suspension rods 402 in each group of hoisting units with the two ends of the cross arm 5 respectively at a low altitude position on the ground in advance. During installation, the two hanging plates 408 on the upper parts of the two mutually symmetric lower suspension rods 402 are installed towards opposite sides respectively, and during installation, the installation positions of the lower suspension rods 402 are adjusted correspondingly according to the actual requirements and the distance and quantity between each group of hoisting units pre-installed on the beam 1;

[0079] C. Assemble the air ducts: The number of air ducts 2 in each group is greater than or equal to one section. First, connect and fix more than two single air ducts 2 in each group of air ducts 2 to form an integrated combined air duct 2 for batch hoisting. That is, in the actual operation process, the hoisting method using a single air duct 2 as shown in Figure 3 can be adopted, or multiple sections of air ducts 2 can be pre-assembled on the ground in advance, and then multiple sections of air ducts 2 together with the lower suspension rods 402 and the cross arm 5 are hoisted. This operation method is faster, can effectively reduce the time for high-altitude connection of the air ducts 2, and reduce the danger;

[0080] D. Place the multiple groups of combined air ducts 2 in step C on the cross arm 5 in step B2 in sequence. Each group of combined air ducts 2 is placed on at least two groups of cross arms 5 of the hoisting units, so that the support for the combined air ducts 2 is more stable;

[0081] E. Hoisting and fixing: Use a crane to hoist multiple sets of combined air ducts 2 to the installation position in sequence, and make the lower connectors on the lower suspension rods 402 in the same hoisting unit correspondingly overlap on the support plates 407 on the upper suspension rods 401 to achieve limit. Specifically: Fix multiple lifting ropes on the crossbeams 5 of multiple hoisting units in sequence on the crane, and in order to make the hoisting more stable, the lifting ropes can be distributed at both ends of the crossbeam 5. Start the crane to lift the air ducts 2 on the crossbeam 5 and the lower suspension rods 402 connected to the crossbeam 5 upward and hoist them to the installation position. Manually assist in adjusting the position of the air ducts 2 at the installation position to make the hanging plates 408 of the lower connectors on the lower suspension rods 402 in the same hoisting unit vertically aligned with the guiding openings 406 and support plates 407 on the upper suspension rods 401 and overlap on the support plates 407, so as to quickly achieve the direct overlap of the upper suspension rods 401 on the lower suspension rods 402 to achieve connection. In this way, the air ducts 2 can be quickly hoisted to the installation position at high altitude, and there is no need to fix the crossbeam 5 on the support hanger at high altitude as in the prior art, thus effectively reducing the time of high-altitude operation, reducing the safety risk, and the crossbeam 5 and the lower suspension rods 402 are installed and connected in advance, which can effectively reduce the operation difficulty and shorten the high-altitude installation period during hoisting and installation;

[0082] F. Air duct docking: Connect and fix the adjacent combined air ducts 2 after hoisting to the installation position in step E through a docking unit. In this embodiment, when multiple sets of combined air ducts 2 are hoisted to the installation position, they can be connected and fixed by driving rivets between the adjacent combined air ducts 2. The air duct 2 installation device in this embodiment is applicable to both rectangular air ducts 2 and circular air ducts 2.

[0083] Through the air duct installation method in this embodiment, the high-altitude operation time can be effectively shortened, thereby reducing the danger of high-altitude operation, and the installation efficiency can be improved.

[0084] Embodiment 2

[0085] As Figure 4 shown, the difference between this embodiment and Embodiment 1 is that: An air duct installation device in this embodiment further includes a docking unit, and the docking unit is used to connect two adjacent air ducts 2. Combining Figure 7 shown, the docking unit includes a first shear arm 701 and a second shear arm 703 that are arranged crosswise. The first shear arm 701 and the second shear arm 703 are rotatably connected by a pin shaft. A spring 704 is connected between the rear ends of the first shear arm 701 and the second shear arm 703. In this embodiment, connection blocks 705 are welded to the rear ends of both the first shear arm 701 and the second shear arm 703. The spring 704 is located between the two connection blocks 705, and both ends of the spring 704 are clamped or welded to the two connection blocks 705 respectively.

[0086] The front ends of the first shear arm 701 and the second shear arm 703 are both vertically connected with limit blocks 702. The two limit blocks 702 are arranged back to back, so that an L-shaped structure is formed between the first shear arm 701 and the limit block 702 and between the second shear arm 703 and the limit block 702;

[0087] A first sliding block 706 and a second sliding block 707 are connected between the front ends of the first shear arm 701 and the second shear arm 703. One end of the first sliding block 706 and one end of the first shear arm 701, and one end of the second sliding block 707 and one end of the second shear arm 703 are all rotatably connected through a rotating shaft 709.

[0088] In this embodiment, both the first sliding block 706 and the second sliding block 707 are arc-shaped blocks, that is, both sides of the first sliding block 706 and the second sliding block 707 are arc-shaped surfaces, and the circles of the first sliding block 706 and the second sliding block 707 are on the same side as the spring 704. Arc-shaped chutes are provided on both the first sliding block 706 and the second sliding block 707. The other end of the second sliding block 707 is fixedly connected with a sliding column 708, and the sliding column 708 is located inside the arc-shaped groove of the second sliding block 707. One end of the sliding column 708 is inserted into the chute of the first sliding block 706 and can slide along the chute of the first sliding block 706. The connection and cooperation between the first sliding block 706 and the second sliding block 707 are realized through the sliding column 708.

[0089] As Figure 7 shown, when the first shear arm 701 and the second shear arm 703 are not under external extrusion, the sliding column 708 on the second sliding block 707 is located on the side of the chute on the first sliding block 706 away from the first shear arm 701.

[0090] As Figure 5 and Figure 6 shown, angle steel flanges 3 are installed at the ends of the air duct 2, and flange holes 301 are provided around the angle steel flanges 3. Combining Figure 9 shown, the flange holes 301 in this embodiment are trapezoidal holes, and the length of the end of the flange hole 301 flush with the end of the angle steel flange 3 is the largest, so that the flange hole 301 can play a guiding role in inserting the front ends of the first shear arm 701 and the second shear arm 703 in this embodiment into the flange hole 301.

[0091] The difference between a duct installation method in this embodiment and that in Embodiment 1 lies in that: in step C, the docking unit is pre-inserted at one end of each group of combined ducts 2 on the ground. In this embodiment, the docking units are all located at the right end of each group of combined ducts 2, that is, the docking units are uniformly installed at the same end of the combined ducts 2. The front ends of the first shear arm 701 and the second shear arm 703 pass through the flange holes 301 at the right end of the combined duct 2, and the front ends of the first shear arm 701 and the second shear arm 703 are located on the same side as the end of the right end of the duct 2. In this embodiment, eight flange holes 301 are provided in the angle steel flange 3, and the docking devices in this embodiment are respectively inserted into these eight flange holes 301;

[0092] In step F, when multiple groups of combined ducts 2 are successively hoisted to the installation position and the upper suspension rod 401 and the lower suspension rod 402 are successfully lapped and fixed, multiple groups of combined ducts 2 are successfully supported on the crossbar 5. By pushing two adjacent groups of combined ducts 2, the two adjacent groups of combined ducts 2 are made to butt against each other. Combining Figure 8 and Figure 9 as shown, the front ends of the first shear arm 701 and the second shear arm 703 on one group of combined ducts 2 are squeezed and pass through the flange holes 301 at the end of the other group of combined ducts 2. The front ends of the first shear arm 701 and the second shear arm 703 are compressed by the extrusion of the flange holes 301 and thus pass through the flange holes 301 without the installed docking unit. At this time, the spring 704 is compressed and stores energy. When the front ends of the first shear arm 701 and the second shear front completely pass through the flange holes 301, since they are no longer squeezed by the side walls of the flange holes 301, at this time the spring 704 resets. Under the rebounding action of the spring 704, the first shear arm 701 and the second shear arm 703 are unfolded again into the state as shown in Figure 7 . At this time, the limit blocks 702 at the front ends of the first shear arm 701 and the second shear arm 703 also unfold outwards to reversely fasten and lock the angle steel flange 3 between the two adjacent ducts 2, thereby realizing the connection between the adjacent combined ducts 2.

[0093] During the above operation process, there is no need to use additional fixing tools. For example, there is no need to use a riveting gun to drive rivets around the angle steel flange 3. Only by pushing the two ducts 2 to collide can the front ends of the first shear arm 701 and the second shear arm 703 be inserted into the flange holes 301 of the other group to realize the butt joint installation of the two adjacent groups of combined ducts 2. The operation is simple and convenient, greatly shortening the time of high-altitude operation, thereby improving the efficiency and safety of high-altitude construction.

[0094] The specific embodiments described above further elaborate on the objective, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only for the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An air duct installation device, characterized in that, Comprising: A hoisting unit, the hoisting unit comprising a cross arm and two symmetrically arranged support brackets. Both of the two support brackets include a lower suspension rod and an upper suspension rod fixed to a beam. The two ends of the cross arm are respectively connected to the two lower suspension rods. A connecting column is connected to the upper suspension rod. One side of the connecting column is connected to a support plate. A lower connecting member is connected to the lower suspension rod, and the lower connecting member can be lapped on the support plate to achieve limiting; The support plate is inclined with respect to the connecting column, and the included angle between the support plate and the connecting column is upward. The lower connecting member includes a connecting plate and a hanging plate. The connecting plate is perpendicularly connected to the lower suspension rod. The hanging plate is inclined with respect to the connecting plate, and the included angle between the hanging plate and the connecting plate is downward; A docking unit, the docking unit being used for connecting two adjacent air ducts. The docking unit includes a first shear arm and a second shear arm that are crosswise arranged. The first shear arm and the second shear arm are rotatably connected. A spring is connected between the rear ends of the first shear arm and the second shear arm. The front ends of the first shear arm and the second shear arm are both perpendicularly connected with limiting blocks, and the two limiting blocks are arranged back to back; A first sliding block and a second sliding block are connected between the front ends of the first shear arm and the second shear arm. One end of the first sliding block is rotatably connected to the first shear arm, and one end of the second sliding block is rotatably connected to the second shear arm; Arc-shaped sliding grooves are formed in both the first sliding block and the second sliding block. The other end of the second sliding block is connected with a sliding column, and the sliding column is inserted into the sliding groove of the first sliding block and can slide along the sliding groove of the first sliding block.

2. The air duct installation device according to claim 1, characterized in that, The top end of the connecting column is connected with an upper guide plate, and a guiding opening is formed in the upper guide plate. The hanging plate passes through the guiding opening and is lapped on the support plate.

3. A duct installation device according to claim 1 or 2, characterized in that, The lower part of the connecting column is connected with a lower guide plate. The end of the lower guide plate far away from the connecting column is an arc-shaped concave surface. After the hanging plate is lapped on the support plate, the arc-shaped concave surface of the lower guide plate can contact the lower suspension rod.

4. A duct installation device according to claim 1 or 2, characterized in that, The connecting column is detachably connected to the lower part of the upper suspension rod, and the lower connecting member is detachably connected to the upper part of the lower suspension rod.

5. The air duct installation device according to claim 4, characterized in that, Both the upper suspension rod and the lower suspension rod are threaded rods. Upper nuts are arranged at the top end and the bottom end of the connecting column. The upper suspension rod passes through the top end and the bottom end of the connecting column in sequence, and both of the two upper nuts are threadedly connected to the upper suspension rod. Lower nuts are arranged at the top end and the bottom end of the lower connecting member. The lower suspension rod passes through the top end and the bottom end of the lower connecting member in sequence, and both of the two lower nuts are threadedly connected to the lower suspension rod.

6. A method for installing an air duct, which uses an air duct installation device according to any one of claims 1-5, characterized in that, Including the following steps: A. Determine the installation position: Set the pipeline route, and determine the number of groups of hoisting units and the number of groups of air ducts; B. Install the hoisting unit: Including the following steps, B1. Install the upper suspension rods of multiple groups of hoisting units in advance on the ceiling or the beam, so that the support plates on the two upper suspension rods in each group of hoisting units are arranged facing each other; B2. Connect the cross arm and the lower suspension rod, and respectively connect the two lower suspension rods in each group of hoisting units to the two ends of the cross arm; C. Assembling the air ducts: The number of air ducts in each group is greater than or equal to one section. Two or more individual air ducts in each group of air ducts are pre-connected and fixed to form an integrated combined air duct. D. Placing the multiple groups of combined air ducts obtained in step C on the crossbeams in step B2 in sequence. Each group of combined air ducts is placed on the crossbeams of at least two groups of hoisting units. E. Hoisting and fixing: Use a crane to hoist the multiple groups of combined air ducts to the installation position in sequence, and make the lower connectors on the lower suspension rods in the same group of hoisting units correspondingly overlap on the support plates on the upper suspension rods to achieve limiting. F. Connecting the air ducts: Connect and fix the adjacent combined air ducts hoisted to the installation position in step E through a docking unit.

7. A duct installation method according to claim 6, characterized in that, In step E, multiple suspension ropes on the crane are fixed to the crossbeams of multiple groups of hoisting units in sequence. Start the crane to lift the air ducts on the crossbeams and the lower suspension rods connected to the crossbeams upward together and hoist them to the installation position. Manually assist in adjusting the position of the air ducts at the installation position to align the lower connectors on the lower suspension rods in the same group of hoisting units with the support plates on the upper suspension rods and place them on the support plates.

8. A duct installation method according to claim 6, characterized in that, The docking unit includes a first shear arm and a second shear arm that are cross - arranged with each other. The first shear arm and the second shear arm are rotatably connected. A spring is connected between the rear ends of the first shear arm and the second shear arm. Limiting blocks are perpendicularly connected to the front ends of the first shear arm and the second shear arm respectively, and the two limiting blocks are arranged back - to - back. A first sliding block and a second sliding block are connected between the front ends of the first shear arm and the second shear arm. One end of the first sliding block is rotatably connected to the first shear arm, and one end of the second sliding block is rotatably connected to the second shear arm. Arc - shaped sliding grooves are formed on both the first sliding block and the second sliding block. The other end of the second sliding block is connected with a sliding column, and the sliding column is inserted into the sliding groove of the first sliding block and can slide along the sliding groove of the first sliding block. In step C, angle steel flanges are connected to both ends of the air ducts, and multiple flange holes are formed on the angle steel flanges. On the ground, the front ends of the first shear arm and the second shear arm in the docking unit are passed through the flange holes at one end of the combined air duct in advance, and the front ends of the first shear arm and the second shear arm are located on the same side as the end of the air duct. In step F, by pushing the adjacent two groups of combined air ducts, the adjacent two groups of combined air ducts are collided with each other. The front ends of the first shear arm and the second shear arm on one group of combined air ducts are squeezed and pass through the flange holes at the end of the other group of combined air ducts, and then reset under the action of the spring. The limiting blocks on the first shear arm and the second shear arm expand outwards and are buckled on the angle steel flange to achieve the connection of the adjacent two groups of combined air ducts.

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