Method for installing ventilator framework in electrolytic plant

Abstract

The invention relates to the technical field of ventilator installation, in particular to an electrolytic workshop ventilator framework installation method which comprises the steps that a ventilator framework is divided into a plurality of units, an assembly site is arranged at the end of a workshop for assembly, and the ventilator framework is transported to an installation position along a roof supporting steel beam through a movable platform; the movable platform is provided with a lifting supporting seat, a locking mechanism and a sliding mechanism, and stable hoisting, accurate positioning and efficient movement of the framework unit are achieved in combination with traction equipment; the large-tonnage crane has the advantages that the use cost of the large-tonnage crane is remarkably reduced, and the construction efficiency in a long and narrow space is improved; the installation process is simplified through modular assembly and the design of the mobile platform; the method is economical, practical and high in operability, and an efficient solution is provided for installation of ventilators of similar workshops.

Description

Technical Field

[0001] The invention relates to the technical field of ventilator installation, in particular to a method for installing a ventilator frame in an electrolysis workshop. Background Art

[0002] The electrolytic workshop is the core facility in electrolytic aluminum production. Its special production process requires the workshop to be designed as a narrow and long structure to facilitate the linear arrangement of electrolytic cells and continuous production. However, this narrow and long structure poses significant challenges to the installation of factory roof ventilators. Traditional installation methods usually require the use of large-tonnage cranes on both sides of the workshop for lifting. Not only is the rental cost high, but it is also limited by the space constraints of buildings around the workshop (such as ramp trestles, duty lounges, etc.), resulting in low construction efficiency and increased costs.

[0003] Therefore, there is an urgent need for an installation method that can complete the hoisting of the ventilator frame on one side of the workshop and efficiently transport it to the installation location, so as to solve the shortcomings of the existing technology, reduce construction costs, and improve installation efficiency and quality. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a method for installing a ventilator skeleton in an electrolysis workshop. By dividing the skeleton units, setting up a mobile platform and traction equipment, efficient and low-cost installation is achieved for narrow and long workshops.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A method for installing a ventilator frame in an electrolysis workshop comprises the following steps:

[0007] Step 1: Divide the ventilator frame into several frame units; level the ground outside the first end of the electrolysis workshop to create an assembly site; arrange two supporting steel beams on the roof of the electrolysis workshop at intervals, the supporting steel beams being arranged along the length of the roof, and the spacing between the two supporting steel beams matching the width of the frame units; a movable platform is provided on the supporting steel beams, the movable platform including a liftable support base, a locking mechanism provided on the liftable support base, and a sliding mechanism provided at the bottom of the liftable support base, the sliding mechanism being capable of sliding along the supporting steel beams;

[0008] Step 2: Assemble the skeleton units on the assembly site;

[0009] Step 3: Slide the mobile platform to one end near the assembly site, use the lifting equipment to lift the skeleton unit onto the mobile platform, and lock the bottom connecting rod of the skeleton unit with the locking mechanism; the mobile platform drives the assembled skeleton unit to the preset installation position;

[0010] Step 4: Lower the liftable support base, place the assembled skeleton unit on the supporting steel beam, and weld the supporting steel beam to the supporting pole of the skeleton unit;

[0011] Step 5: Remove the mobile platform and reinstall it on the supporting steel beam near the assembly site;

[0012] Step 6: Repeat steps 2 to 5 until the final skeleton unit is hoisted. The final skeleton unit installed is the unit closest to the assembly site. Remove the mobile platform and directly hoist the final skeleton unit into place using the hoisting equipment. The supporting steel beam is welded and fixed to the supporting pole of the last skeleton unit.

[0013] Preferably, a further technical solution of the present invention is:

[0014] Preferably, the method further includes step seven: after all the skeleton units are welded and fixed to the supporting steel beams, transverse stiffening ribs are welded between the two supporting steel beams.

[0015] Preferably, in step three, when the mobile platform drives the skeleton unit to move, it moves through a traction device, which includes a winch arranged on the side or ground of the electrolysis workshop, and a pulley group fixed on the roof of the electrolysis workshop at one end opposite to the first end. The wire rope on the winch passes around the pulley group and is connected to the mobile platform after turning.

[0016] Preferably, the liftable support seat includes a support plate and two adjusting screws, the adjusting screw passes through the support plate and is locked by a first adjusting nut and a second adjusting nut, the first adjusting nut is located on the upper side of the support plate, and the second adjusting nut is located on the lower side of the support plate; the locking mechanism includes two blocks arranged at intervals on the support plate, the blocks are threadedly connected with a locking screw, and an abutment head is provided at one end facing the locking screw; the sliding mechanism includes two connecting blocks arranged at intervals above and below, the connecting blocks are provided with an adjusting hole, the adjusting screw passes through the adjusting hole, and the connecting block is also rotatably connected to a walking wheel; the adjusting screw is also threadedly connected to a third adjusting nut and a fourth adjusting nut, the third adjusting nut is located above the upper connecting block, and the fourth adjusting nut is located below the lower connecting block; the supporting steel beam adopts an I-beam, and by adjusting the third adjusting nut and the fourth adjusting nut, the two walking wheels are respectively pressed against the lower surface and the upper surface of the upper flange of the I-beam to form a rolling contact pair.

[0017] Preferably, a disassembly guide groove is provided on the support plate, wherein the adjusting screw can be radially moved into or out of the mounting hole of the support plate along the disassembly guide groove.

[0018] Preferably, an assembly platform for assembling the skeleton units is provided on the assembly site.

[0019] Preferably, each skeleton unit includes N intermediate skeletons, 2≤N≤6; in step 2, when assembling the skeleton units, it includes: positioning and hoisting: using hoisting equipment to hoist the first intermediate skeleton to the first positioning point of the assembly platform, and then hoisting the second intermediate skeleton to the second positioning point, and the distance between the two positioning points is consistent with the design span; connecting rod connection: installing bottom connecting rods and top connecting rods between the first and second intermediate skeletons to form a stable truss structure; iterative expansion: when N is greater than or equal to 3, repeat steps 1-2, and hoist the 3rd to Nth intermediate skeletons in turn, and each newly added skeleton is connected to the previous skeleton through the bottom connecting rod and the top connecting rod, and finally form an intermediate frame containing N skeletons; arc keel installation: installing arc keels symmetrically on both sides of the intermediate frame.

[0020] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:

[0021] This application divides the ventilator frame into several units and assembles them at the assembly site, and combines a movable platform and traction equipment to achieve efficient and precise installation of ventilators in narrow and long electrolysis workshops, greatly reducing the use cost of traditional large-tonnage cranes; the movable platform's liftable support seat and locking mechanism design ensure the stable transportation and flexible adjustment of the frame unit; this method is economical, safe and operational, and effectively solves the technical difficulties of ventilator installation in the special environment of the electrolysis workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the intermediate frame when assembled in an embodiment of the present invention;

[0023] Figure 2 This is a structural diagram of the installation of the curved keel in an embodiment of the present invention;

[0024] Figure 3 This is a structural diagram of the embodiment of the present invention when the mobile platform drives the skeleton unit to move;

[0025] Figure 4 is a schematic structural diagram of the skeleton unit when it is moved into place in an embodiment of the present invention;

[0026] Figure 5 is a schematic structural diagram of the arrangement of the traction equipment in an embodiment of the present invention;

[0027] Figure 6 is a schematic structural diagram of a mobile platform in an embodiment of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the traction equipment in an embodiment of the present invention.

[0029] Explanation of the accompanying reference numerals: 1. Assembly platform; 2. Intermediate frame; 201. Supporting upright; 3. Top connecting rod; 4. Bottom connecting rod; 5. Arc keel; 6. Roof; 7. Supporting steel beam; 8. Mobile platform; 801. Support plate; 8011. Disassembly guide groove; 802. Adjusting screw; 803. Connecting block; 804. Traveling wheel; 805. Stop block; 806. Locking screw; 807. Abutment; 9. Lifting equipment; 10. Winch; 11. Pulley block; 12. Wire rope. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with specific embodiments. The purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0031] like Figures 1 to 7 As shown, this embodiment provides a method for installing a ventilator frame in an electrolysis workshop, comprising the following steps:

[0032] Step 1: Divide the ventilator frame into several frame units; level an assembly site on the ground outside the first end of the electrolysis workshop; arrange two supporting steel beams 7 on the roof 6 of the electrolysis workshop at intervals, and the supporting steel beams 7 are arranged along the length of the roof 6, and the spacing between the two supporting steel beams 7 matches the width of the frame unit; a movable platform 8 is provided on the supporting steel beam 7, and the movable platform 8 includes a liftable support seat, a locking mechanism is provided on the liftable support seat, and a sliding mechanism is provided at the bottom of the liftable support seat, and the sliding mechanism can slide along the supporting steel beam 7.

[0033] Specifically, the liftable support seat includes a support plate 801 and two adjusting screws 802. The adjusting screw 802 passes through the support plate 801 and is locked by a first adjusting nut and a second adjusting nut. The first adjusting nut is located on the upper side of the support plate 801, and the second adjusting nut is located on the lower side of the support plate 801. The locking mechanism includes two blocks 805 spaced apart on the support plate 801. The block 805 is threadedly connected with a locking screw 806, and the locking screw 806 is provided with an abutment head 807 at one end facing the other. When the locking screw 806 is rotated so that the abutment head 807 abuts against the bottom connecting rod 4 of the skeleton unit, the locking mechanism is locked. The bottom connecting rod 4; the sliding mechanism includes two connecting blocks 803 spaced apart in an upper and lower manner, the connecting block 803 is provided with an adjustment hole, the adjusting screw 802 passes through the adjustment hole, and the connecting block 803 is also rotatably connected to the walking wheel 804; the adjusting screw 802 is also threadedly connected to a third adjusting nut and a fourth adjusting nut, the third adjusting nut is located above the upper connecting block 803, and the fourth adjusting nut is located below the lower connecting block 803; the supporting steel beam 7 adopts an I-beam, and by adjusting the third adjusting nut and the fourth adjusting nut, the two walking wheels 804 are respectively pressed against the lower surface and the upper surface of the upper flange of the I-beam to form a rolling contact pair.

[0034] Furthermore, the support plate 801 is provided with a disassembly guide slot 8011, wherein the adjusting screw 802 can be radially moved into or out of the mounting hole of the support plate 801 along the disassembly guide slot 8011. This facilitates the removal of the mobile platform 8 from the supporting steel beam 7. To remove the mobile platform 8, the third or fourth adjusting nut can be loosened directly, followed by the first or second adjusting nut. The adjusting screw 802, connecting block 803, and running wheel 804 can then be removed from the support plate 801. The locking screw 806 can then be loosened, causing the locking mechanism to release the bottom connecting rod 4 of the skeleton unit, and the support plate 801 can then be removed.

[0035] An assembly platform 1 for assembling the skeleton units is provided on the assembly site.

[0036] Step 2: Assemble the skeleton units on the assembly site.

[0037] Each skeleton unit includes N intermediate skeletons 2, 2≤N≤6; when assembling the skeleton units, it includes: positioning and hoisting: use the hoisting equipment 9 to hoist the first intermediate skeleton 2 to the first positioning point of the assembly platform 1, and then hoist the second intermediate skeleton 2 to the second positioning point, and the distance between the two positioning points is consistent with the design span; connecting rod connection: install the bottom connecting rod 4 and the top connecting rod 3 between the first and second intermediate skeletons 2 to form a stable truss structure; iterative expansion: when N is greater than or equal to 3, repeat steps 1-2, and hoist the 3rd to Nth intermediate skeletons 2 in turn. Each newly added skeleton is connected to the previous skeleton through the bottom connecting rod 4 and the top connecting rod 3, and finally form an intermediate frame containing N skeletons; installation of curved keels 5: install curved keels 5 symmetrically on both sides of the intermediate frame.

[0038] Step 3: Slide the mobile platform 8 to one end close to the assembly site, use the lifting equipment 9 to lift the skeleton unit onto the mobile platform 8, and lock the bottom connecting rod 4 of the skeleton unit with the locking mechanism; the mobile platform 8 drives the assembled skeleton unit to move to the preset installation position.

[0039] When the mobile platform 8 drives the skeleton unit to move, it moves through a traction device. The traction device includes a winch 10 arranged on the side or ground of the electrolysis workshop, and a pulley group 11 fixed on the roof 6 of the electrolysis workshop at one end opposite to the first end. The wire rope 12 on the winch 10 passes around the pulley group 11 and then turns to connect with the mobile platform 8.

[0040] Step 4: Lower the liftable support seat, place the assembled skeleton unit on the support steel beam 7, and weld the support steel beam 7 to the support upright 201 of the skeleton unit.

[0041] Step 5: Remove the mobile platform 8 and reinstall it on the supporting steel beam 7 near one end of the assembly site.

[0042] Step 6: Repeat steps 2 to 5 until the final skeleton unit is hoisted. The final installed skeleton unit is the unit closest to the assembly site. Remove the mobile platform 8, and directly hoist the final installed skeleton unit into place using the hoisting equipment 9. The supporting steel beam 7 is welded and fixed to the supporting upright 201 of the last skeleton unit.

[0043] Step 7: After all the skeleton units are welded and fixed to the supporting steel beams 7 , transverse stiffening ribs are welded between the two supporting steel beams 7 .

[0044] The electrolysis workshop ventilator frame installation method of the present application achieves significant beneficial effects through the following structural design:

[0045] This method divides the ventilator frame into several units through modular assembly, and completes the assembly at the assembly site, reducing the difficulty of high-altitude operations; the lowering of the frame unit is achieved through the liftable support seat. The coordinated design of the mobile platform 8, the winch 10 and the pulley block 11 enables the smooth movement of the mobile platform 8 on the narrow roof 6, reduces the physical exertion of manual pushing, and improves transportation efficiency. By reducing the use of large-tonnage cranes, the construction cost is greatly reduced; this method achieves efficient, low-cost and safe installation of the ventilator frame on the narrow electrolysis workshop roof 6 through modular design and coordinated optimization of the mobile platform 8 and the traction system, and has significant practicality and promotion value.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Any equivalent changes made by using the contents of the present invention description and the drawings are included in the scope of the present invention.

Claims

1. A method for installing a ventilator frame in an electrolysis workshop, characterized in that: The following steps are involved: Step 1: Divide the ventilator frame into several frame units; Leveling an assembly area on the ground outside the first end of the electrolysis workshop; Two supporting steel beams (7) are arranged at intervals on the roof (6) of the electrolysis workshop, the supporting steel beams (7) are arranged along the length of the roof (6), and the spacing between the two supporting steel beams (7) matches the width of the skeleton unit; A movable platform (8) is provided on the supporting steel beam (7), and the movable platform (8) includes a liftable support seat, a locking mechanism is provided on the liftable support seat, and a sliding mechanism is provided at the bottom of the liftable support seat, and the sliding mechanism can slide along the supporting steel beam (7); Step 2: Assemble the skeleton units on the assembly site; Step 3: Slide the mobile platform (8) to one end close to the assembly site, use the lifting equipment (9) to lift the skeleton unit onto the mobile platform (8), and lock the bottom connecting rod (4) of the skeleton unit with the locking mechanism; the mobile platform (8) drives the assembled skeleton unit to move to the preset installation position; Step 4: Lower the liftable support seat, place the assembled skeleton unit on the support steel beam (7), and weld the support steel beam (7) to the support upright (201) of the skeleton unit; Step 5: Remove the mobile platform (8) and reinstall the mobile platform (8) on the supporting steel beam (7) near one end of the assembly site; Step 6: Repeat steps 2 to 5 until the final skeleton unit is hoisted. The final skeleton unit is the unit closest to the assembly site. Remove the mobile platform (8), and directly hoist the final skeleton unit into place using the hoisting equipment (9). The supporting steel beam (7) is welded and fixed to the supporting vertical pole (201) of the last skeleton unit.

2. The method for installing a ventilator frame for an electrolysis workshop according to claim 1, characterized in that: The method further includes step seven: after all the skeleton units are welded and fixed to the supporting steel beams (7), a transverse stiffening rib is welded between the two supporting steel beams (7).

3. The method for installing a ventilator frame for an electrolysis workshop according to claim 1, wherein: In step three, when the mobile platform (8) drives the skeleton unit to move, it moves through a traction device, which includes a winch (10) arranged on the side or ground of the electrolysis workshop, and a pulley group (11) fixed on the roof (6) of the electrolysis workshop at one end opposite to the first end. The wire rope (12) on the winch (10) passes around the pulley group (11) and turns to connect with the mobile platform (8).

4. The method for installing a ventilator frame for an electrolysis workshop according to claim 1, wherein: The liftable support seat comprises a support plate (801) and two adjusting screws (802), wherein the adjusting screws (802) pass through the support plate (801) and are locked by a first adjusting nut and a second adjusting nut, wherein the first adjusting nut is located on the upper side of the support plate (801) and the second adjusting nut is located on the lower side of the support plate (801); The locking mechanism comprises two blocks (805) spaced apart and arranged on the support plate (801); a locking screw (806) is threadedly connected to the block (805); and an abutment joint (807) is provided at one end of the locking screw (806) facing each other. The sliding mechanism comprises two connecting blocks (803) spaced apart from each other. The connecting blocks (803) are provided with adjustment holes, and the adjustment screws (802) pass through the adjustment holes. The connecting blocks (803) are also rotatably connected to walking wheels (804). The adjusting screw (802) is also threadedly connected with a third adjusting nut and a fourth adjusting nut, the third adjusting nut is located above the upper connecting block (803), and the fourth adjusting nut is located below the lower connecting block (803); The supporting steel beam (7) is made of I-steel. By adjusting the third adjusting nut and the fourth adjusting nut, the two running wheels (804) respectively press the lower surface and the upper surface of the upper flange of the I-steel to form a rolling contact pair.

5. The method for installing a ventilator frame for an electrolysis workshop according to claim 4, characterized in that: A disassembly guide groove (8011) is provided on the support plate (801), wherein the adjusting screw (802) can be radially moved into or out of the mounting hole of the support plate (801) along the disassembly guide groove (8011).

6. The method for installing a ventilator frame for an electrolysis workshop according to claim 1, characterized in that: An assembly platform (1) for assembling the skeleton units is provided on the assembly site.

7. The method for installing a ventilator frame for an electrolysis workshop according to claim 6, characterized in that: Each skeleton unit includes N intermediate skeletons (2), 2≤N≤6; in step 2, when assembling the skeleton units, the steps include: Positioning and hoisting: using a hoisting device (9), hoist the first intermediate frame (2) to the first positioning point of the assembly platform (1), and then hoist the second intermediate frame (2) to the second positioning point, with the distance between the two positioning points being consistent with the designed span; Connecting rod connection: a bottom connecting rod (4) and a top connecting rod (3) are installed between the first and second intermediate frames (2) to form a stable truss structure; Iterative expansion: when N is greater than or equal to 3, repeat steps 1-2, and hoist the 3rd to Nth intermediate frames (2) in sequence. Each newly added frame is connected to the previous frame through the bottom connecting rod (4) and the top connecting rod (3), and finally form an intermediate frame containing N frames; Installation of the curved keel (5): The curved keels (5) are symmetrically installed on both sides of the middle frame.

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