Smokestacks are built by constructing a reinforced pad, a reinforced base on the pad, placing a preconstructed smokestack welded base element and the reinforced base. A smokestack constructing machine is positioned on the base with cross beams extending above the welded base. A preassembled top sect
Smokestacks are built by constructing a reinforced pad, a reinforced base on the pad, placing a preconstructed smokestack welded base element and the reinforced base. A smokestack constructing machine is positioned on the base with cross beams extending above the welded base. A preassembled top section is placed on the beams. In a lower work area, jacks connected to lower fixtures on the top section raise the top section. Transition sections are inserted laterally on the beams, and the top section is lowered, attached and welded to the transition sections. The jacks are disconnected, lowered and reconnected. The top section is attached and welded to the lower section, which is raised to laterally insert another section. The raising, inserting, lowering, attaching, welding and raising steps are repeated until the smokestack is complete. Ladders and wind screws attachments are attached in an upper work area.
대표청구항▼
1. A smokestack erection method comprising: constructing a foundation of reinforced concrete,constructing a base ring section,securing the base ring section to the foundation,constructing a construction machine on the foundation,providing plural vertical double acting hydraulic cylinders in the cons
1. A smokestack erection method comprising: constructing a foundation of reinforced concrete,constructing a base ring section,securing the base ring section to the foundation,constructing a construction machine on the foundation,providing plural vertical double acting hydraulic cylinders in the construction machine,providing a vertically movable platform connected to the hydraulic cylinders,providing lifting bolts extending inward from the platform for connecting to upper sections of the smokestack,providing a support in the machine on the base ring section to support upper rings,constructing a first top section,inserting, positioning and holding the first top section on the base ring section in the construction machine,connecting the first top section to the platform,raising the first top section with the platform and the hydraulic cylinders,holding the first top section upward with the movable platform and the hydraulic cylinders,constructing a second next upper ring section,inserting, positioning and holding the second next upper ring section on the base ring section in the construction machine,juxtaposing the second next upper ring section and the first top section with the platform and the hydraulic cylinders by lowering the platform,connecting the first top section and the second next upper ring section,disconnecting the first to section from the platform,lowering the platform and connecting the platform to the second next upper ring section,lifting the first and second ring sections with the platform and the hydraulic cylinders,holding the first and second ring sections upward,constructing a third upper ring section,inserting, positioning and holding the third upper ring section on base ring section in the construction machine below the second upper ring section,juxtaposing the third upper ring section and the second upper ring section by lowering the platform,connecting the third and second upper ring sections,disconnecting the second upper ring section from the platform,lowering the platform and connecting the platform to the third next upper ring section,lifting the third, second and first upper ring sections with the hydraulic cylinders,holding the third, second and first ring sections elevated,continuing the constructing, inserting, juxtaposing, connecting, disconnecting, lowering, connecting, lifting, and holding subsequent sequential ring sections and an nth ring section and,removing the support,lowering the nth and above ring sections and connecting the nth ring section to the base ring section,removing the construction machine and the hydraulic cylinders and readying the smokestack for use. 2. The method of claim 1, further comprising disassembling and removing the support before juxtaposing the nth ring section and the base ring section. 3. The method of claim 1, wherein the placing the ring sections in the construction machine comprises laterally sliding successive ring sections on rails connected or aligned with the support. 4. The method of claim 1, wherein juxtaposing the upper ring sections comprises raising an inserted subsequent ring section to the next above ring section. 5. The method of claim 1, wherein the support further comprises I beams. 6. The method of claim 1, wherein the connecting comprises bolting. 7. The method of claim 1, wherein the connecting comprises welding. 8. The method of claim 1, wherein the construction machine has a square planform, and the plural hydraulic cylinders comprise four pairs of double acting hydraulic cylinders. 9. The method of claim 1, wherein the lifting framework is about 10 meters high and about 7×7 meters in planform, the smokestack has a 6 meter diameter, the ring sections are about 2.44 meters high and the lifting is about 2.5 meters. 10. A smokestack made according to the method of claim 1 having a height of about 80 meters or more and a base diameter of about 6 meters. 11. The method of claim 1, wherein the plural hydraulic cylinders comprise four vertical pillars arranged in a square platform, wherein the plural cylinders comprise four vertical pairs of double acting hydraulic cylinders, and each of the pairs further comprising interconnected piston rods between upper and lower double acting hydraulic cylinders, and wherein the movable platform is connected to the interconnected piston rods. 12. The method of claim 11, wherein lower ends of upper cylinders are interconnected with hydraulic lines to a hydraulic pressure source for raising the platform and upper ends of upper cylinders are connected with hydraulic lines to lower ends of diagonally opposite lower cylinders for maintaining the smokestack in a vertical position as the smokestack is erected. 13. A smokestack assembly apparatus, the smokestack comprising stacked annular sections, the apparatus comprising: a construction pad,a base pad extending from the construction pad,a base section mounted on the base pad,a construction machine having plural pillars extending upward from the construction pad having a height less than five stacked annular sections,four pairs of double acting hydraulic cylinders are within the pillars that drive in both the up and down directions,a mobile horizontal platform movable vertically by the hydraulic cylinders,lifting bolts connected to the mobile platform and extending inward therefrom for connecting to a flange on annular sections for sequentially lifting connected sections with the mobile platform while sequentially laterally inserting annular sections along rails in the construction machine,bolts connected to flanges on the annular sections for holding adjacent sections together while welding adjacent sections. 14. The apparatus of claim 13, wherein the four pairs of double acting hydraulic cylinders are interconnected hydraulic cylinders for concurrently lifting connected sections while equalizing movement of all parts of the mobile platform. 15. The apparatus of claim 13, wherein the mobile platform has a central opening for receiving joined sections. 16. The apparatus of claim 13, wherein the construction machine has a lower work area where the sections of the smokestack are welded. 17. The apparatus of claim 13, wherein the construction machine has an upper work area for sequentially covering joined sections, and for attaching ladders and other equipment to the joined sections. 18. The apparatus of claim 13, wherein the four pairs of double acting hydraulic cylinders comprise four vertical pairs of double acting hydraulic cylinders, and each of the pairs further comprising interconnected piston rods between upper and lower double acting hydraulic cylinders, and wherein the movable platform is connected to the interconnected piston rods. 19. The apparatus of claim 18, wherein lower ends of upper cylinders are interconnected with hydraulic lines to a hydraulic pressure source for raising the platform, and upper ends of upper cylinders are connected with hydraulic lines to lower ends of diagonally opposite lower cylinders for maintaining the smokestack in a vertical position as the smokestack is assembled.
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