Anti-top-charging steel structure silo

Abstract

This utility model relates to the field of silo structure technology and provides a reverse-top, sequentially installed steel structure silo. The silo includes a cylindrical body, with a support plate fixedly installed at the upper end. The support plate is distributed in a ring around the outside of the cylindrical body. A movable frame is provided at the upper end of the cylindrical body, fitted onto the upper end of the cylindrical body and placed on the support plate. A lifting ring is provided at the top of the cylindrical body, connected to the hook of an external lifting device. A connecting seat is provided at the lower end of the lifting ring, with multiple lifting ropes fixedly connected to the connecting seat. The lower ends of the lifting ropes are connected to a limiting mechanism. By providing a lifting ring at the top of the cylindrical body for connection to external lifting equipment, the entire silo can be easily lifted. A pin is inserted into the limiting slot to achieve a stable connection between the movable frame and the cylindrical body. The operation is relatively simple and the connection is secure, effectively preventing the movable frame from falling off the cylindrical body and avoiding the cylindrical body falling from a height due to insecure fixing. This ensures the smooth progress of the lifting operation and reduces the risk of silo damage.

Description

Technical Field

[0001] The utility model belongs to the technical field of silo structures, and particularly relates to a reverse jacking and forward assembling type steel structure silo. Background Art

[0002] With the acceleration of urbanization, the construction scale of sewage treatment facilities is continuously expanding. The traditional high-altitude bulk assembly method has gradually been unable to meet the demands of modern engineering due to problems such as high safety risks, long construction periods, and difficult cost control. As a new construction technology, the lifting inverted assembly method adopts a "top-down" reverse construction process, combines the flexibility, economy and safety of the lifting inverted assembly method, and provides an efficient solution for the construction of sewage treatment towers.

[0003] The reverse jacking and forward assembling construction method for steel structure silos is applicable to various large vertical cylindrical steel treatment structures: such as anaerobic reaction tanks, aerobic reaction tanks, biological selection tanks, sedimentation tanks, sludge thickening tanks, gas storage tanks and other thin-walled tanks with relatively large diameters and relatively high heights.

[0004] The core of the lifting inverted assembly construction method for sewage treatment towers lies in subverting the traditional "bottom-up" construction logic and creatively adopting a "top-down" reverse assembly sequence. In specific implementation, first perform typesetting, blanking, edge planing (and make marks according to the typesetting drawing) according to the drawings to form corresponding modules, complete the integrated assembly of the top module of the structure on the ground, and take it as the reference unit. Then install a set of integral electric hoist lifting system for it. After starting the system, the completed top structure section can be integrally and smoothly jacked upward, and accurately lifted to a height of 1.2 times the height of a single tower section. The key to the jacking operation is strict synchronization control to ensure that the structure is stable and the perpendicularity meets the requirements.

[0005] After the jacking is completed, a safe, open and easy-to-operate working space is vacated below the lifted part. Construction personnel can efficiently carry out the assembly, precise positioning, welding and quality inspection of the next tower section in the working area. After the new section is firmly connected with the lifted upper tower section and confirmed to be qualified, start the integral electric hoist lifting system to integrally jack the two assembled tower sections by one section height

[0006] The operation is carried out in cycles through the jacking and welding steps. The top-down assembly of the tower body is completed section by section near the ground, until the entire tower structure including the bottommost section is fully assembled at a position close to the foundation elevation. Finally, the integral electric hoist lifting system is used to slowly, accurately and smoothly lower the fully assembled integral tower body to the designed foundation position, perform precise leveling and straightening, and finally complete welding or bolt fixing with the embedded foundation parts to realize the final positioning of the structure. This method significantly reduces the risk of high-altitude operations and improves construction quality and efficiency.

[0007] Thin-walled tanks used in sedimentation tanks, as a type of inverted-top, sequentially installed steel structure silo, are cylindrical in shape with smooth surfaces. However, they are prone to insecure fixing during hoisting. If the external fixing clamps loosen, the tank may fall from a height, causing damage to the silo and potentially leading to a safety accident. Therefore, designing an inverted-top, sequentially installed steel structure silo is essential to address these issues. Utility Model Content

[0008] This invention provides a reverse-top, sequentially installed steel structure silo to solve the aforementioned problems in the prior art.

[0009] This utility model is implemented as follows: a reverse-top sequentially installed steel structure silo includes a silo body, a support plate is fixedly installed on the upper end of the silo body, the support plate is distributed in a ring on the outside of the silo body, and a movable frame is provided on the upper end of the silo body, the movable frame is sleeved on the upper end of the silo body and placed on the support plate.

[0010] The top of the cylinder is provided with a lifting ring, which is connected to the hook of an external hoisting device. The lower end of the lifting ring is provided with a connecting seat, on which a connecting shaft is rotatably mounted. The upper end of the connecting shaft is fixedly connected to the lifting ring. Multiple limiting grooves arranged in a circular array are opened on the outer side of the cylinder. Multiple limiting mechanisms are provided on the movable frame, which are respectively inserted into the limiting grooves and connect the movable frame and the cylinder as a whole. Multiple lifting ropes are fixedly connected to the connecting seat, and the lower ends of the lifting ropes are respectively connected to the limiting mechanisms.

[0011] As a preferred embodiment, the limiting mechanism includes a guide rod fixedly installed on the movable frame, a pin sleeved on one end of the guide rod, the pin slidably installed on the guide rod, a spring sleeved on the guide rod, the two ends of the spring being fixedly connected to the movable frame and the pin respectively, and one end of the pin being inserted into the limiting groove.

[0012] The lower ends of the suspension ropes are fixedly connected to the ends of the guide rods.

[0013] As a preferred embodiment, a connecting block is fixedly installed on the pin, the upper end of the connecting block is provided with an inclined surface, and a pressing mechanism is provided on the movable frame, the pressing mechanism being used to apply downward pressure to multiple connecting blocks.

[0014] As a preferred embodiment, the pressing mechanism includes an annular bar located above the movable frame. Multiple spring telescopic rods arranged in a circular array are installed on the movable frame. The movable ends of the spring telescopic rods are all connected to the annular bar. Multiple pressure rods are fixedly installed at the bottom of the annular bar, and the lower ends of the pressure rods face the inclined surface at the upper end of the connecting block.

[0015] As a preferred embodiment, the surface of the lifting ring is provided with a wear-resistant coating, which is a nickel-based alloy coating.

[0016] As a preferred embodiment, the bottom end of the cylinder is provided with multiple counterweights arranged in a circular array, and the counterweights are fixed to the cylinder by detachable bolts.

[0017] As a preferred embodiment, the suspension rope is a steel wire rope, and the surface of the steel wire rope is wrapped with a high-strength polyester fiber sheath, which is fixed to the outer layer of the steel wire rope by a heat shrinking process.

[0018] Compared with related technologies, the inverted top-mounted, sequentially installed steel structure silo provided by this utility model has the following beneficial effects:

[0019] This application effectively solves the safety hazard and ensures the safety of hoisting operations by addressing the problem that thin-walled sedimentation tanks are not securely fixed during the hoisting of inverted-top, sequentially installed steel structure silos, which can easily lead to the tanks falling from a height due to the loosening of external fixing clamps.

[0020] By installing a lifting ring at the top of the silo to connect with external hoisting equipment, the entire silo can be easily hoisted. The downward-pressing ring bar drives the pressure rod to press down on the inclined surface of the connecting block, causing the connecting block and pin to move. The movable frame is then fitted onto the upper end of the silo and placed on the support plate. After releasing the ring bar, a spring drives the pin to insert into the limiting groove, achieving a stable connection between the movable frame and the silo. The operation is relatively simple and the connection is secure.

[0021] When the hoisting equipment lifts the silo using the lifting rings, the lifting ropes are tightened to further ensure the stable connection of the silo during the hoisting process. This effectively prevents the movable frame from falling off the silo, avoids the silo falling from a height due to insecure fixing, ensures the smooth progress of the hoisting operation, and reduces the risk of silo damage. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an exploded view of the present invention;

[0024] Figure 3 This is a cross-sectional view of the middle cylinder of this utility model;

[0025] Figure 4 This is an enlarged schematic diagram of a portion of the structure of the movable frame in this utility model;

[0026] Figure 5 In this utility model Figure 4 Enlarged diagram of point A in the diagram;

[0027] Figure 6 This is an enlarged cross-sectional view of part of the structure of the pin in this utility model.

[0028] In the diagram: 1. Cylinder; 2. Support plate; 3. Movable frame; 4. Lifting ring; 5. Connecting seat; 6. Connecting shaft; 7. Limiting groove; 8. Limiting mechanism; 9. Lifting rope; 10. Guide rod; 11. Pin; 12. Spring; 13. Connecting block; 14. Inclined surface; 15. Annular bar; 16. Spring telescopic rod; 17. Pressure rod. Detailed Implementation

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] A preferred embodiment of the inverted top-mounted, sequentially installed steel structure silo provided by this utility model is, for example... Figures 1 to 6 As shown:

[0032] A reverse-top sequentially installed steel structure silo includes a silo body 1, a support plate 2 fixedly installed on the upper end of the silo body 1, the support plate 2 being distributed in a ring on the outside of the silo body 1, and a movable frame 3 provided on the upper end of the silo body 1, the movable frame 3 being sleeved on the upper end of the silo body 1 and placed on the support plate 2.

[0033] The top of the cylinder 1 is provided with a lifting ring 4, which is connected to the hook of the external hoisting equipment. The lower end of the lifting ring 4 is provided with a connecting seat 5, and a connecting shaft 6 is rotatably installed on the connecting seat 5. The upper end of the connecting shaft 6 is fixedly connected to the lifting ring 4. Multiple limiting grooves 7 arranged in a circular array are opened on the outer side of the cylinder 1. Multiple limiting mechanisms 8 are provided on the movable frame 3. The limiting mechanisms 8 are inserted into the limiting grooves 7 respectively and connect the movable frame 3 and the cylinder 1 as a whole. Multiple lifting ropes 9 are fixedly connected to the connecting seat 5. The lower ends of the lifting ropes 9 are connected to the limiting mechanisms 8 respectively.

[0034] The limiting mechanism 8 includes a guide rod 10 fixedly installed on the movable frame 3. One end of the guide rod 10 is fitted with a pin 11, which is slidably installed on the guide rod 10. A spring 12 is fitted over the guide rod 10. Both ends of the spring 12 are fixedly connected to the movable frame 3 and the pin 11, and one end of the pin 11 is inserted into the limiting groove 7.

[0035] The lower end of the suspension rope 9 is fixedly connected to the end of the guide rod 10.

[0036] A connecting block 13 is fixedly installed on the pin 11. The upper end of the connecting block 13 is provided with an inclined surface 14. A pressing mechanism is provided on the movable frame 3. The pressing mechanism is used to apply downward pressure to multiple connecting blocks 13.

[0037] The pressing mechanism includes an annular bar 15 located above the movable frame 3. Multiple spring telescopic rods 16 arranged in a circular array are mounted on the movable frame 3. The movable ends of the spring telescopic rods 16 are all connected to the annular bar 15, allowing the spring telescopic rods 16 to slide vertically. Multiple pressure rods 17 are fixedly mounted at the bottom of the annular bar 15, with the lower ends of the pressure rods 17 facing the inclined surface 14 at the upper end of the connecting block 13. By pressing down the annular bar 15, the pressure rods 17 press down on the connecting block 13, causing the connecting block 13 and the pin 11 to move away from the limiting groove 7, thus separating the movable frame 3 from the cylinder 1.

[0038] A lifting ring 4 is installed at the top of the silo 1. The lifting ring 4 is connected to the hook of the external lifting equipment and is used for lifting the entire silo.

[0039] The hoisting process:

[0040] By pressing down on the annular bar 15, the annular bar 15 moves downward under the guidance of the spring telescopic rod 16. The elastic element in the spring telescopic rod 16 contracts, causing the pressure rod 17 to press down on the inclined surface 14 at the upper end of the connecting block 13. Due to the action of the inclined surface 14, the connecting block 13 and the pin 11 will move to one side, and the spring 12 will contract to maintain this state.

[0041] Next, the movable frame 3 is fitted onto the upper end of the cylinder 1 and placed on the support plate 2 that is distributed in a ring on the outside of the cylinder 1. At this time, the movable frame 3 and the cylinder 1 are initially combined, but a stable connection has not yet been formed. The pins 11 are oriented toward the limiting grooves 7 and are ready to be inserted into the limiting grooves 7.

[0042] When the annular bar 15 is released, the spring telescopic rod 16 moves the annular bar 15 upward and resets it. Multiple springs 12 also reset and cause the pin 11 to insert into the limiting groove 7. This achieves a stable connection between the movable frame 3 and the cylinder 1.

[0043] When the hoisting equipment lifts the silo through the lifting ring 4, the lifting rope 9 is tightened to ensure a stable connection of the silo during the hoisting process, preventing the movable frame 3 from falling off the silo body 1, and avoiding damage to the silo and safety accidents caused by the silo body 1 falling from a height due to insecure fixing.

[0044] After hoisting is completed, similarly, pressing down the ring bar 15 separates the pin 11 from the limiting groove 7, which can separate the movable frame 3 from the cylinder 1. The movable frame 3 and its structure can be removed from the cylinder 1. The movable frame 3 and its structure can be used in conjunction with other silo structures.

[0045] In a further preferred embodiment of this utility model:

[0046] The surface of the lifting ring 4 is coated with a wear-resistant layer, which is a nickel-based alloy coating. During lifting, the lifting ring 4 will frequently come into contact with and rub against the hook of the external lifting equipment, making it prone to wear. The nickel-based alloy coating is formed on the surface of the lifting ring 4 through processes such as electroplating to create a protective film. Nickel-based alloys have high hardness, good wear resistance, and corrosion resistance. When the lifting ring 4 moves relative to the hook, this nickel-based alloy coating initially bears the frictional force. Its high hardness and wear resistance effectively resist the scratching and wear of the lifting ring 4 surface by the hook, reducing material loss on the surface of the lifting ring 4, thereby extending the service life of the lifting ring 4 and ensuring the safety and reliability of the lifting process. In harsh environments such as humid conditions or those containing chemicals, metals are prone to corrosion. The nickel-based alloy coating can isolate the base metal of the lifting ring 4 from contact with external corrosive media, preventing electrochemical corrosion of the base metal and further protecting the structural integrity of the lifting ring 4.

[0047] The bottom of the silo 1 is equipped with multiple counterweights arranged in a circular array, which are fixed to the silo 1 by detachable bolts. During hoisting, installation, or use, the silo 1 needs to maintain a certain level of stability and balance. By setting multiple counterweights in a circular array at the bottom of the silo 1, the center of gravity of the silo 1 can be adjusted. The counterweights increase the weight at the bottom of the silo 1, lowering its center of gravity. According to the principles of physics, the lower the center of gravity, the more stable the object. During hoisting, the counterweights help maintain the verticality of the silo 1, reducing swaying and tilting; after installation, they enhance the overall stability of the silo, preventing it from tipping over due to external factors (such as wind, earthquakes, etc.).

[0048] The lifting rope 9 is a steel wire rope, with a high-strength polyester fiber sheath covering its surface. The sheath is fixed to the outer layer of the steel wire rope using a heat-shrink process. The steel wire rope is made of multiple twisted steel wires, possessing high strength and toughness. During lifting, the steel wire rope can withstand significant tensile force, evenly distributing the weight of the silo across the individual wires. Through the interaction forces between the wires and the twisted structure, the lifting rope 9 is designed to withstand heavy loads without easily breaking, ensuring lifting safety.

[0049] The high-strength polyester fiber sheath covering the surface of the wire rope serves to protect it. During hoisting, the wire rope may rub against or collide with surrounding objects. The sheath reduces direct damage from external factors, prevents the wires on the surface of the wire rope from breaking or wearing down, and extends the service life of the wire rope.

[0050] High-strength polyester fibers possess high strength and abrasion resistance. After being fixed to the outer layer of the wire rope through a heat-shrink process, they can be tightly bonded to the wire rope. The sheath not only protects the wire rope but also enhances the overall performance of the suspension rope 9 to a certain extent, such as improving its fatigue resistance and corrosion resistance, because the sheath can block some moisture, chemicals, and other substances from corroding the wire rope.

[0051] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0052] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A reverse-top, sequentially installed steel structure silo, characterized in that, Includes a cylindrical body (1), on which a support plate (2) is fixedly installed. The support plate (2) is distributed in a ring around the outside of the cylindrical body (1). A movable frame (3) is provided on the upper end of the cylindrical body (1). The movable frame (3) is sleeved on the upper end of the cylindrical body (1) and placed on the support plate (2). The top of the cylinder (1) is provided with a lifting ring (4), which is connected to the hook of the external hoisting equipment. The lower end of the lifting ring (4) is provided with a connecting seat (5), and a connecting shaft (6) is rotatably installed on the connecting seat (5). The upper end of the connecting shaft (6) is fixedly connected to the lifting ring (4). Multiple limiting grooves (7) arranged in a circular array are opened on the outer side of the cylinder (1). Multiple limiting mechanisms (8) are provided on the movable frame (3). The limiting mechanisms (8) are respectively inserted into the limiting grooves (7) and connect the movable frame (3) and the cylinder (1) as one unit. Multiple lifting ropes (9) are fixedly connected to the connecting seat (5), and the lower ends of the lifting ropes (9) are respectively connected to the limiting mechanisms (8).

2. The inverted-top, sequentially installed steel structure silo as described in claim 1, characterized in that, The limiting mechanism (8) includes a guide rod (10) fixedly installed on the movable frame (3). One end of the guide rod (10) is fitted with a pin (11). The pin (11) is slidably installed on the guide rod (10). The guide rod (10) is fitted with a spring (12). The two ends of the spring (12) are fixedly connected to the movable frame (3) and the pin (11) respectively. One end of the pin (11) is inserted into the limiting groove (7). The lower end of the suspension rope (9) is fixedly connected to the end of the guide rod (10).

3. The inverted-top, sequentially installed steel structure silo as described in claim 2, characterized in that, A connecting block (13) is fixedly installed on the pin (11). The upper end of the connecting block (13) is provided with an inclined surface (14). A pressing mechanism is provided on the movable frame (3). The pressing mechanism is used to apply downward pressure to multiple connecting blocks (13).

4. The inverted-top, sequentially installed steel structure silo as described in claim 3, characterized in that, The pressing mechanism includes an annular bar (15) located above the movable frame (3). Multiple spring telescopic rods (16) arranged in a circular array are installed on the movable frame (3). The movable ends of the spring telescopic rods (16) are all connected to the annular bar (15). Multiple pressure rods (17) are fixedly installed at the bottom of the annular bar (15). The lower ends of the pressure rods (17) face the inclined surface (14) at the upper end of the connecting block (13).

5. The inverted-top, sequentially installed steel structure silo as described in claim 1, characterized in that, The surface of the lifting ring (4) is provided with a wear-resistant coating, which is a nickel-based alloy coating.

6. The inverted-top, sequentially installed steel structure silo as described in claim 1, characterized in that, The bottom end of the cylinder (1) is provided with multiple counterweights arranged in a circular array, and the counterweights are fixed to the cylinder (1) by detachable bolts.

7. The inverted-top, sequentially installed steel structure silo as described in claim 1, characterized in that, The suspension rope (9) is a steel wire rope, and the surface of the steel wire rope is wrapped with a high-strength polyester fiber sheath, which is fixed to the outer layer of the steel wire rope by heat shrinking process.

Images