Coke bunker top sealing steel structure installation process based on suspension cable sliding method

Abstract

The present application relates to steel structure installation technical field, specifically disclose a kind of coke storehouse top airtight steel structure installation process based on suspension cable slip method, including setting sliding mechanism on warehouse top, setting the lifting hook that can slide on sliding mechanism;The lifting hook of moving sliding mechanism until contact with the appropriate position of component, then through controller control suspension mechanism and component unhook, make component hang on the lifting hook of sliding mechanism;According to construction drawing, the lifting hook of moving sliding mechanism, component reaches installation position, then carries out the installation of steel structure;Laying baffle on the steel structure of installation completion, the present application is through the sliding mechanism of indoor laying to cooperate the operation of outdoor suspension mechanism, realizes inside and outside cooperation, to solve the problem that the existing factory building is inside, construction condition is limited, space is cramped, crane cannot enter existing factory building to operate and then guarantee safety, improve work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel structure installation, in particular, relates to a coke storage top airtight steel structure installation process based on a catenary cable sliding method. BACKGROUND

[0002] Part of the coke storage construction of ironworks was built many years ago, and most of the dust and waste gas were discharged without organization, which did not meet the requirements in environmental assessment and needed to be rectified.

[0003] In the installation process of the dust removal system in the rectification process, the top of the coke storage needs to be overhead closed to optimize the dispersion condition of the smoke and dust when the coke is discharged under the coke storage. In this case, the total part of the engineering entity is all in the existing plant, the construction condition is limited, the space is cramped, and the crane cannot enter the existing plant for operation. In the case that the coke storage mostly lacks spare storage, the dust removal reconstruction of the coke storage faces the situation that the coke production under the workshop and the reconstruction construction are crossed, which puts forward higher requirements for the safety and construction period of the construction.

[0004] In the installation process of the closed steel structure on the tank, the truss used for support, especially the truss that plays a major supporting role, is very troublesome to transport under the condition that the crane cannot enter the plant because of its long length and large mass. Obviously, the efficiency of manual transportation is low, and the safety of the transport workers cannot be guaranteed during the transportation process. In view of this, the present application provides a coke storage top airtight steel structure installation process based on a catenary cable sliding method. SUMMARY

[0005] The purpose of the present application is to provide a coke storage top airtight steel structure installation process based on a catenary cable sliding method, which solves the following technical problems:

[0006] How to transport steel structure construction components, especially trusses with long length and large mass, in a scene where a crane cannot enter, while improving the construction speed and ensuring the safety of the construction.

[0007] The purpose of the present application can be achieved by the following technical solutions:

[0008] A coke storage top airtight steel structure installation process based on a catenary cable sliding method, comprising:

[0009] S1, a sliding mechanism is arranged on the top of the warehouse, and a hook that can slide is arranged on the sliding mechanism;

[0010] S2, the component is hoisted by the suspension mechanism and transported into the warehouse through the opening of the warehouse;

[0011] S3, the hook of the sliding mechanism is moved until it contacts the appropriate position of the component, and then the suspension mechanism is controlled to be unhooked from the component by the controller, so that the component is hung on the hook of the sliding mechanism;

[0012] S4, move the hooks of the sliding mechanism and the components to the installation position according to the design drawings, and then install the steel structure;

[0013] S5, lay the baffle on the installed steel structure.

[0014] Through the above technical scheme: the sliding mechanism is laid indoors to cooperate with the suspension mechanism outdoors to realize the internal and external cooperation, thereby solving the problem that the existing factory building is internally limited in construction conditions, cramped in space, and unable to enter the existing factory building for operation.

[0015] As a further technical scheme of the present application: considering that the construction site is a coke storage, fire should be strictly controlled, and the warehouse is divided into a crane operation station yard and a prefabricated truss assembly site outside the warehouse, the crane operation station yard is used for crane operation, and the prefabricated truss assembly site is used for welding and assembling prefabricated trusses.

[0016] As a further technical scheme of the present application: the suspension mechanism is a crane.

[0017] As a further technical scheme of the present application: the warehouse is a coke storage, and a work plane is arranged by leveling the surface of the coke in the coke storage, and the height of the work plane is the same as the height of the truss installation position.

[0018] Through the above technical scheme: the work plane is used for workers to contact the steel structure transported to the side of the warehouse, and can also be used as a temporary storage point of the truss, so that the external crane does not have to wait for the truss to be in place in the coke storage before hoisting, and can continuously use the leveled work plane as a temporary truss platform. After the installation personnel in the warehouse complete the installation, they do not have to wait for the crane to be hoisted in before starting work, reducing the construction period of the suspension mechanism, saving costs and improving construction efficiency.

[0019] As a further technical scheme of the present application: the controller is in communication connection with a warning mechanism arranged in the warehouse, and the warning mechanism is used to prompt the worker about the unhooking time point of the hoisting mechanism.

[0020] As a further technical scheme of the present application: the sliding mechanism is constructed on the basis of the steel column components at both ends of the warehouse.

[0021] As a further technical scheme of the present application: the truss is sprayed with a fireproof coating after installation.

[0022] As a further technical scheme of the present application: the process of controlling the suspension mechanism and the steel structure to be unhooked by the controller is:

[0023] Obtain image information of the truss on the crane in a plurality of continuous t time periods based on the current time point;

[0024] For the first 0-4t time period, using the formula

[0025]

[0026] Obtain the plane oscillation coefficient i and compare it with the standard parameter I; if i < I, calculate the plane oscillation coefficient i for the next 0-4t time period and compare it with the standard parameter I again.

[0027] If i≥I, then obtain the direction of motion of the truss in the plane of its cross section. When the direction of motion points to the unmanned side of the truss, it is judged to be in a safe state and can be unhooked.

[0028] Where t is the standard time to complete the unhooking process; N is the number of steel wire ropes used for suspension; L is the truss length; l0 is the maximum straight-line distance between two fixed points on the truss; α(t) is a function obtained by fitting the continuous change of the truss's angle value in the horizontal plane over time; a is a function belonging to A random point in time within a time period; I is a standard parameter that keeps the swing amplitude within a controllable range and can be obtained in a finite number of experiments.

[0029] The above technical solution allows for safety assessment of the uncoupling time point, thereby quantifying the uncoupling process, ensuring the safety of workers responsible for traction trusses near the site during automated uncoupling, and improving the overall safety of the construction process.

[0030] The beneficial effects of this invention are:

[0031] (1) The present invention achieves coordinated operation between the indoor sliding mechanism and the outdoor suspension mechanism, thereby solving the problem that the existing factory building has limited construction conditions and space, and the crane cannot enter the existing factory building to carry out operations.

[0032] (2) The working surface of this invention is used for workers to contact the steel structure transported to the side of the warehouse, and can also serve as a temporary storage point for the trusses. In this way, the external crane does not have to wait for the trusses inside the coke warehouse to be in place before it can lift them, and can continuously use the leveled working surface as a temporary storage platform for the trusses. After the installation personnel inside the warehouse have completed the installation, they do not have to wait for the crane to lift them in before they can start working, which reduces the construction period of the suspension mechanism, saves costs and improves construction efficiency.

[0033] (3) This invention quantifies the uncoupling process by making a safety judgment on the uncoupling time point, thereby ensuring the safety of the workers responsible for pulling the truss near the uncoupling process and improving the safety level of the entire construction process. Attached Figure Description

[0034] The invention will now be further described with reference to the accompanying drawings.

[0035] Figure 1 This is a simplified diagram of the truss hoisting method in Embodiment 3 of the present invention;

[0036] Figure 2 This is a schematic diagram of the truss plane angle value change in Embodiment 3 of the present invention;

[0037] Figure 3 This is a schematic diagram of the truss movement direction in Embodiment 3 of the present invention;

[0038] Figure 4 This is a schematic diagram of the baffle laying scheme in Embodiment 1 of the present invention;

[0039] Figure 5 This is a partial structural schematic diagram of the baffle laying scheme in Embodiment 1 of the present invention. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1

[0042] Please see Figures 1-5 As shown, in one embodiment, a process for installing a sealed steel structure on the top of a coke silo based on the suspension cable sliding method is provided, including:

[0043] S1. Install a sliding mechanism on the top of the warehouse. The sliding mechanism can be a suspension lock, which is easy to install and has a low cost. Install sliding hooks on the sliding mechanism. Multiple hooks need to be installed.

[0044] S2. The components are lifted by a suspension mechanism and transported into the warehouse through the opening, preferably at the roof. The components include various parts that need to be transported by hoisting. The warehouse opening is obtained by dismantling the warehouse roof. The dismantling of the roof can be gradual, that is, a fixed distance is dismantled each day and the dismantled roof is put back in place the next day. This avoids the problem that the stored items in the warehouse will not be effectively protected due to large-scale roof dismantling.

[0045] S3. The hook of the sliding mechanism is moved until it contacts the component at a suitable position. Then, the controller controls the suspension mechanism to disengage from the component, so that the component is suspended on the hook of the sliding mechanism. The controller is a microprogram controller, which performs calculations and controls according to the supporting software system. It can be a ControlLogix 5570 controller, which supports multiple communication options, thus facilitating wireless control.

[0046] S4. Move the hook and components of the sliding mechanism to the installation position according to the construction drawings, and then install the steel structure.

[0047] S5. Lay baffles on the installed steel structure. The steel plates are laid symmetrically along the width direction. The middle one is a 0.8mm thick aluminum-zinc coated steel plate. On both sides of the thick aluminum-zinc coated steel plate, 6mm patterned steel plates that can be walked on are laid symmetrically. On the outside of the 6mm patterned steel plates, 2.5mm patterned steel plates are laid to fill the plane section of the warehouse top.

[0048] The above technical solution involves installing a sliding mechanism indoors to work in conjunction with an outdoor suspension mechanism, achieving coordinated operation between indoor and outdoor systems. This solves the problem of limited construction conditions and cramped space inside existing factory buildings, preventing cranes from entering the existing factory buildings for operations.

[0049] Given that the construction site is a coke warehouse, fire should be strictly controlled. The area outside the warehouse should be divided into a crane operation area and a prefabricated truss assembly area. The crane operation area is for crane operations, and the prefabricated truss assembly area is for welding and assembling the prefabricated trusses. Welding operations can be carried out outside the warehouse to avoid safety accidents.

[0050] The suspension mechanism is a crane, which is highly mobile and can continuously operate between multiple warehouses, making it both cost-effective and flexible.

[0051] The controller communicates with a warning mechanism installed in the warehouse. The warning mechanism is used to alert workers to the time when the hoisting mechanism will release the hook. The warning mechanism can be a voice speaker or an indicator light. It can help workers determine the time to release the hook, so as to coordinate their work, concentrate their attention, improve their preparedness, and minimize the occurrence of accidents.

[0052] The sliding mechanism is constructed on the basis of steel column components at both ends of the warehouse, maximizing environmental utilization and reducing construction costs.

[0053] After the truss is installed, a fireproof coating is sprayed on it. Due to the dangers of dust reaching its limit and causing deflagration in the confined space of the coke warehouse, fireproofing is required.

[0054] Example 2

[0055] As one embodiment of the present invention, the warehouse is a coke warehouse, and a working plane is constructed inside the coke warehouse by leveling the surface of the coke. The height of the working plane is the same as the height of the truss installation position.

[0056] It should be noted that the work area can also be composed of other similar products from other warehouses, such as sand, gravel, and timber.

[0057] The above technical solution allows workers to contact the steel structure transported to the side of the warehouse, and also serves as a temporary storage point for the trusses. This way, external cranes don't have to wait for the trusses inside the coke warehouse to be fully in place before lifting; the leveled work surface can be continuously used as a platform for temporary truss storage. After installation, the personnel inside the warehouse don't need to wait for the crane to lift the trusses in before starting work, reducing the construction period for the suspension mechanism, saving costs, and improving construction efficiency.

[0058] Example 3

[0059] refer to Figures 1-3 This embodiment is based on Embodiment 1 and uses a quantitative approach to assess safety. The process of the controller disengaging the suspension mechanism from the steel structure includes:

[0060] Obtain image information of the truss on the crane within several consecutive time intervals t based on the current time point;

[0061] For the first 0-4t time period, using the formula Obtain the planar oscillation coefficient i, and compare the planar oscillation coefficient i with the standard parameter I;

[0062] If i < I, then calculate the plane oscillation coefficient i for the next 0-4t time interval and compare it again with the standard parameter I;

[0063] If i≥I, then obtain the direction of motion of the truss in the plane of its cross section. When the direction of motion points to the unmanned side of the truss, it is judged to be in a safe state and can be unhooked.

[0064] Where t is the standard time to complete the unhooking process, which can be obtained from empirical data; N is the number of steel wire ropes used for suspension; L is the truss length; l0 is the maximum straight-line distance between the two fixed points of the steel wire rope on the truss; α(t) is a function obtained by fitting the continuous change of the truss angle value in the horizontal plane with time; a is a function belonging to A random point in time within a time period; I is a standard parameter that keeps the swing amplitude within a controllable range and can be obtained in a finite number of experiments.

[0065] The above technical solution allows for safety assessment of the uncoupling time point, thereby quantifying the uncoupling process, ensuring the safety of workers responsible for traction trusses near the site during automated uncoupling, and improving the overall safety of the construction process.

[0066] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A process for installing a coke bunker roof tight steel structure based on the catenary cable sliding method, characterized in that, The method comprises the following steps: S1, setting a sliding mechanism on the top of the warehouse, and setting a sliding hook on the sliding mechanism; S2, hoisting the truss by the suspension mechanism and conveying it into the warehouse through the opening of the warehouse; S3, moving the hook of the sliding mechanism until it is in contact with the appropriate position of the truss, and then controlling the suspension mechanism to be disconnected from the truss by the controller, so that the truss is hung on the hook of the sliding mechanism; S4, moving the hook of the sliding mechanism and the truss to the installation position, and then installing the steel structure; S5, laying the baffle on the installed steel structure; The process of controlling the suspension mechanism to be disconnected from the steel structure by the controller is: acquiring image information of the truss on the crane within a number of consecutive time periods based on a current time point t time periods based on a current time point For the first 0-4t time period, the formula is used to obtain the planar swing coefficient i， The planar swing coefficient i is compared with the standard parameter I ; If i < I， then calculate the planar wobble coefficient for the next 0-4t period i and re-compare to the standard parameter I ； If i ≥ I， the movement direction of the truss in the plane of its cross section is obtained, and when the movement direction points to the unmanned side of the truss, it is judged as a safe state, and the unhooking is performed. wherein t is the standard time to complete the unhooking process; N is the number of steel wires used for suspension; L is the length of the truss; is the maximum straight-line distance of the steel wires between the two fixed points on the truss; (t) is a function obtained by fitting the continuous change relationship of the angle value of the truss in the horizontal plane with time; a is a random time point within the time period of ( , ); I is a standard parameter for the swing amplitude to be within a controllable range.

2. A process for installation of coke bunker roof tight steel structure based on catenary action sliding method as claimed in claim 1 wherein, The warehouse is divided into a crane operation station yard and a prefabricated truss assembly yard outside the warehouse, the crane operation station yard is used for crane operation, and the prefabricated truss assembly yard is used for welding and assembling prefabricated trusses.

3. A process for installation of coke bunker roof tight steel structure based on catenary action sliding method as claimed in claim 1 wherein, The suspension mechanism is a crane.

4. The process for installing coke battery roof tight steel structure based on catenary action sliding method as claimed in claim 1 wherein, The warehouse is a coke storage, and a work plane is formed in the coke storage by flattening the surface of the coke, and the height of the work plane is the same as the height of the truss installation position.

5. The process for installation of coke bunker roof tight steel structure based on catenary action sliding method as claimed in claim 1 wherein, The controller is in communication connection with a warning mechanism arranged in the warehouse, and the warning mechanism is used to prompt workers of the unhooking time point of the hoisting mechanism.

6. A process for installation of coke bunker roof tight steel structure based on catenary action sliding method as claimed in claim 1 wherein, The sliding mechanism is constructed on the basis of the steel column components at both ends of the warehouse.

7. The process for installing coke battery roof tight steel structure based on catenary action sliding method as claimed in claim 1 wherein, The truss is sprayed with a fireproof coating after installation is completed.

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