Methods and hoisting tools applicable to the overall hoisting of large fiberglass towers

Abstract

This invention discloses a method and hoisting fixture suitable for the overall hoisting of large fiberglass towers. The method includes: determining the structure, dimensions, and preset hoisting position of the hoisting fixture based on the external dimensions, overall weight, and local components of the fiberglass tower; determining the binding method between the fiberglass tower and the hoisting fixture based on the details of the connection between the hoisting fixture and the fiberglass tower; performing finite element modeling analysis on the hoisting fixture to calculate the feasibility of its structure and dimensions, and adjusting the structure and dimensions of the hoisting fixture based on the calculation results; performing finite element modeling analysis on the fiberglass tower, and hoisting the fiberglass tower using the hoisting fixture when the stress and deformation of the fiberglass tower are within a set range. This achieves the goal of hoisting large fiberglass towers as a whole, avoiding segmented hoisting, reducing on-site docking workload and labor costs, and demonstrating strong practicality and operability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of hoisting hangers for glass steel towers, and particularly relates to a whole hoisting method and hoisting tooling suitable for large glass steel towers. BACKGROUND

[0002] With the development of the chemical industry and the increasing demand for high-yield processing of chemical raw materials, the diameter of the glass steel processing tower is also increasing, and the length is also increasing. The application market of the super-long, super-large and super-heavy glass steel tower is also becoming wider, and its hoisting has become a difficult point in the use process.

[0003] At present, the weight of the glass steel processing tower produced in China is all below 100t, and it is hoisted in sections, and needs to be transported to the use site for assembly. However, for some large glass steel towers, when the radial length of the glass steel tower exceeds 10m and the axial length reaches 30m, the overall weight can reach 300t. If the existing hoisting method of the glass steel processing tower is still used, that is, the glass steel processing tower is first divided into multiple sections, then hoisted to the designated position on site, and then assembled on site, the workload and labor cost on site will be greatly increased. Especially for domestic production of foreign use projects, the on-site cost is as high as half of the production cost.

[0004] Based on the above, there is an urgent need for a whole hoisting method and hoisting tooling suitable for large glass steel towers to solve the technical problems existing in the prior art. SUMMARY

[0005] One object of the present application is to provide a whole hoisting method suitable for large glass steel towers to realize the whole hoisting of super-long and super-heavy large glass steel towers, reduce the on-site butt joint workload and labor hours and cost, save cost, and improve practicality and operability.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] The whole hoisting method suitable for large glass steel towers comprises the following steps: S1, determining the structure, size and preset hoisting position of the hoisting tooling according to the peripheral size, overall weight and local components of the glass steel tower; S2, determining the connection form of the glass steel tower and the hoisting tooling according to the connection position of the hoisting tooling and the glass steel tower; S3, performing finite element modeling analysis on the hoisting tooling to calculate the feasibility of its structure and size, and adjusting the structure and size of the hoisting tooling according to the calculation result; S4, performing finite element modeling analysis on the glass steel tower, and when the stress condition and deformation condition of the glass steel tower are within the set range, hoisting the glass steel tower through the hoisting tooling.

[0008] Optionally, in the step S4, the stress of the glass steel tower is analyzed when the included angle between the glass steel tower and the horizontal plane is 0°, 30°, 45°, 75° and 90°.

[0009] Optionally, the deformation of the glass steel tower is analyzed when the included angle between the glass steel tower and the horizontal plane is 0° and 90°.

[0010] Optionally, in the step S3, the stress of the hoisting tooling is analyzed when the included angle between the glass steel tower and the horizontal plane is 0°, 30°, 45°, 75° and 90°, and whether the hoisting tooling needs to be provided with a reinforcing structure is determined according to the stress.

[0011] Optionally, the hoisting tooling is provided with two, and the two hoisting toolings are located at the upper segment and the lower segment of the glass steel tower, respectively.

[0012] Another object of the present application is to provide a hoisting tooling for the overall hoisting of a large glass steel tower by using the overall hoisting method suitable for the large glass steel tower, so as to simplify the structure of the hoisting tooling, realize the overall hoisting of the large glass steel tower, avoid segmented hoisting, reduce the workload of on-site butt joint and labor cost, and improve the hoisting efficiency.

[0013] To achieve the above object, the present application adopts the following technical solutions:

[0014] The hoisting tooling is used for the overall hoisting of the glass steel tower to be hoisted by using the overall hoisting method suitable for the large glass steel tower, and the hoisting tooling comprises a tooling ring plate and a lifting lug.

[0015] Optionally, it further comprises a support bracket, the support bracket is fixedly connected to the glass steel tower and abuts against the tooling ring plate, and when the included angle between the glass steel tower and the horizontal plane is greater than 0°, the support bracket can limit the tooling ring plate from sliding on the glass steel tower.

[0016] Optionally, it further comprises a first reinforcing plate, and the first reinforcing plate is fixedly connected to the tooling ring plate.

[0017] Optionally, it further comprises a second reinforcing plate, and the second reinforcing plate is fixedly connected between the tooling ring plate and the lifting lug.

[0018] Optionally, it further comprises a support saddle, and the support saddle is arranged on the outer side wall of the glass steel tower.

[0019] Advantages of the present application:

[0020] The present application provides a whole hoisting method suitable for large glass steel tower, which first determines the specific structure, size and preset hoisting position of the hoisting tooling according to the peripheral size, overall weight and local component information of the glass steel tower; then analyzes the hoisting tooling in the hoisting process to determine the most suitable structure and size of the hoisting tooling; and then models and analyzes the stress condition and deformation condition of the glass steel tower when hoisted to ensure the stability of the structure of the glass steel tower when hoisted, so as to realize the purpose of stably and safely hoisting the whole large glass steel tower with super long and super heavy large caliber, avoid segmented hoisting, greatly reduce the on-site butt joint workload, effectively reduce the artificial working hours and cost, save cost, and have strong practicality and operability.

[0021] The present application also provides a hoisting tooling which can be used to hoist the whole large glass steel tower by using the above method, comprising a tooling ring plate and an ear, in use, the tooling ring plate is fixedly connected to the outer surface of the glass steel tower at a preset position, and the ear is fixedly connected to the tooling ring plate, which has a simple structure and is more convenient and reliable to assemble with the glass steel tower. It can be understood that the adjustment process of the specific structure, size and installation position of the hoisting tooling has been completed before the hoisting tooling is fixedly connected to the glass steel tower, which enables the whole super long and super heavy large caliber glass steel tower to be safely and stably hoisted by two ears and two tooling ring plates, avoids segmented hoisting, reduces the on-site butt joint workload and labor cost, and also reduces the design and manufacturing cost of the hoisting tooling, which helps to improve the efficiency of the whole hoisting process. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The specific flowchart of the whole hoisting method suitable for large glass steel tower provided by the embodiment of the present application;

[0023] Figure 2 The top view of the hoisting tooling and the glass steel tower after assembly provided by the embodiment of the present application;

[0024] Figure 3 The bottom view of the hoisting tooling and the glass steel tower after assembly provided by the embodiment of the present application;

[0025] Figure 4 The side view of the hoisting tooling and the glass steel tower after assembly provided by the embodiment of the present application.

[0026] In the figure:

[0027] 100, glass steel tower; 110, upper section; 120, lower section;

[0028] 1, hook; 2, hoisting connector; 3, tool ring plate; 4, lifting lug; 5, support bracket; 6, first reinforcing plate; 7, second reinforcing plate; 8, support saddle. DETAILED DESCRIPTION

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or it can be detachable connection; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] The present application provides a kind of overall hoisting method and hoisting tool suitable for large glass steel tower, which not only can avoid the defect of large on-site workload, high labor cost brought by segmented hoisting, but also can provide a feasible scheme for the existing market to hoist the overall large glass steel tower with radial length exceeding 10 meters, axial length reaching 30 meters and overall weight reaching 300t, so as to break through the limitation of existing glass steel tower 100 hoisting method and hoisting tool.

[0033] Of course, it needs to be pointed out in advance that the above is only an example of the specific size of one kind of large glass steel tower, and for other sizes of large glass steel tower, the technical solutions provided in the present embodiment can also be used according to the needs to realize overall hoisting. Figure 1 The flowchart shown is the flowchart of the overall hoisting method suitable for large glass steel tower in the present embodiment.Figure 1 As shown, the integral hoisting method comprises the following steps:

[0034] S1. Determine the structure, size and preset hoisting position of the hoisting tooling used according to the peripheral size, overall weight and local components of the glass steel tower 100.

[0035] In specific implementation, first, information related to hoisting of the glass steel tower 100 is collected, which in this embodiment includes the peripheral size (including radial length size and axial length size), overall weight, position and characteristics of local components, etc. of the glass steel tower 100. The shape and size of the hoisting tooling used are determined by the peripheral size of the glass steel tower 100, and if the radial length size, axial length size and overall weight of the glass steel tower 100 respectively exceed the set range values, the arc length and axial length of the hoisting tooling need to be increased respectively to increase the contact area and stable connection effect of the hoisting tooling to the glass steel tower 100 in the circumferential direction and axial direction respectively. The local components refer to specific components such as beams and columns on the outer surface of the glass tower, which make the preset hoisting position need to avoid these components to ensure that the hoisting tooling does not collide with them or even cause damage during hoisting.

[0036] Further, the structure of the hoisting tooling is determined according to the collected information related to the glass steel tower 100, such as Figure 4 As shown, the structure includes hooks 1, hangers, hoisting connecting pieces 2, etc. For example, the selection of hooks and hangers refers to GB10051.1-10. Whether to use hinged hooks 1 or fixed hooks 1 can be determined according to the peripheral size of the glass steel tower 100, whether to use steel pipe hangers, H-shaped steel hangers or round steel hangers can be determined according to the overall weight of the glass steel tower 100, and whether to use a sling or a sling can be determined according to the weight of the glass steel tower 100, so that the specific structure, size and preset hoisting position of the hoisting tooling can be comprehensively considered according to the actual related information of the glass steel tower 100.

[0037] S2. Determine the connection form of the glass steel tower 100 and the hoisting tooling according to the connection part details of the hoisting tooling and the glass steel tower 100.

[0038] In specific implementation, a detailed view of the connection part between the glass steel tower 100 and the lifting tool is provided. If the lifting tool cannot avoid the local components on the glass steel tower 100, for example, when there is a mounting hole at the connection part between the glass steel tower 100 and the lifting tool, the lifting tool can be fixedly connected to the glass steel tower 100 by using a bolt. If there are local components such as beams and columns at the connection part, the lifting tool can be fixedly connected to the beams and columns by using a clamp, a bolt or other fixing devices through clamping force. The lifting tool can also be tied to the glass steel tower 100 by using a lifting rope or a lifting cable. Therefore, the present application does not limit this, as long as the lifting tool can be stably connected to the glass steel tower 100 at the connection part.

[0039] S3, finite element modeling analysis is performed on the lifting tool to calculate the feasibility of the structure and size of the lifting tool, and the structure and size of the lifting tool are adjusted according to the calculation result.

[0040] In specific implementation, finite element modeling and analysis are performed on the lifting tool during lifting. Professional finite element software is used to perform three-dimensional modeling on the overall structure of the lifting tool, and corresponding boundary conditions, loads and material parameters and other information are set. Through finite element analysis, the stress and deformation of the lifting tool during lifting are calculated. If the analysis result shows that there is a problem, for example, the stress is too large or the deformation is too large, corresponding adjustment needs to be made, for example, the lifting tool can be optimized and designed by replacing the material used in the lifting tool, the type of hook 1 and lifting rod, adjusting the size of the lifting tool, increasing the number of lifting tools used, and the like, to meet the lifting requirements.

[0041] Preferably, in the present embodiment, the number of lifting tools is two, and the two lifting tools are located at the upper segment 110 and the lower segment 120 of the glass steel tower 100, respectively, to bear the weight of the upper and lower parts of the glass steel tower 100, respectively, so as to evenly share the load and reduce the stress of a single lifting tool. The risk of deformation and damage of the glass steel tower 100 is also reduced. In addition, only one additional lifting tool is needed to meet the stability requirements of lifting, so that the material used in the lifting tool, the structure and the size of the lifting tool do not need to be changed, thereby saving the cost of materials and ensuring the progress of lifting. Of course, in some other parallel embodiments, three, four or even more lifting tools can be provided on the glass steel tower 100 to meet the stability requirements of lifting when the peripheral size and overall weight of the glass steel tower 100 are larger. The present application does not limit the number of lifting tools used.

[0042] It can be understood that after the glass steel tower 100 is hoisted to the designated position on site, the glass steel tower 100 also needs to be turned over by 90° to complete the installation process on site. Based on this, in the present embodiment, the stress conditions of the hoisting tooling in the five states of the glass steel tower 100 during hoisting are analyzed, the five states include the angles between the glass steel tower 100 and the horizontal plane of 0°, 30°, 45°, 75° and 90°, and whether a reinforcing structure needs to be arranged on the hoisting tooling is judged according to the stress condition analysis, so as to enhance the overall structural strength of the hoisting tooling and prevent it from being broken, so as to ensure the safe and smooth hoisting of the hoisting tooling.

[0043] S4, the glass steel tower 100 is hoisted by the hoisting tooling when the stress condition and the deformation condition of the glass steel tower 100 are within the set range.

[0044] In specific implementation, the hoisting tooling is subjected to finite element modeling and analysis during hoisting. In the present embodiment, the stress conditions of the upper section 110 and the lower section 120 of the glass steel tower 100 in the five states during hoisting are analyzed, the five states include the above-mentioned 0°, 30°, 45°, 75° and 90°, in addition, the stress conditions include the maximum circumferential compressive stress, the maximum circumferential tensile stress, the maximum axial tensile stress, the maximum axial compressive stress and the wall shear stress, and each stress size should not exceed the corresponding maximum allowable stress.

[0045] Further, the deformation conditions of the glass steel tower 100 in the two extreme states of 0° and 90° with the horizontal plane are subjected to finite element modeling and analysis. This is because, in the present embodiment, it is known from the stress condition analysis of the glass steel tower 100 in the five states that the circumferential maximum tensile stress and the circumferential maximum compressive stress of the upper section 110 of the glass steel tower 100 in the two states of 0° and 90° are greater than the circumferential maximum tensile stress and the circumferential maximum compressive stress in the states of 30°, 45° and 75° (the same for the lower section 120), so the tower body can be locally reinforced by analyzing the deformation conditions of the glass steel tower 100 in the two extreme states. Then the deformation conditions in the two extreme states are analyzed after reinforcement, and when the deformation conditions are within the set range (i.e. within the acceptable range), the glass steel tower 100 can be hoisted and the subsequent overturning process by the hoisting tooling, so as to ensure the safety and reliability of the entire hoisting process.

[0046] Figures 2 to 4The structural schematic diagram of the lifting tool provided in the embodiment, the whole lifting tool can adopt the whole lifting method suitable for large glass steel tower as described above to lift and transport the super large and super long large-diameter large glass steel tower. In the embodiment, the lifting tool includes tool ring plates 3 and lifting lugs 4, wherein the tool ring plates 3 are fitted and fixedly connected on the preset lifting positions on the outer surface of the glass steel tower 100, and one lifting lug 4 is fixedly connected on each of the opposite sides of the tool ring plate 3.

[0047] In specific use, the two tool ring plates 3 are respectively fitted and fixedly connected on the preset positions on the outer surface of the upper section 110 and the lower section 120 of the glass steel tower 100, and the lifting lugs 4 are fixedly connected on the tool ring plates 3. The whole lifting tool structure is simple, and the assembly between the lifting tool and the glass steel tower 100 is more convenient and reliable. It can be understood that the adjustment process of the structure, size and preset installation position of the lifting tool has been completed before the lifting tool is fixedly connected on the glass steel tower 100, which enables the whole glass steel tower 100 to be safely and stably lifted through the two lifting lugs 4 and the two tool ring plates 3, avoids segmented lifting, reduces the on-site butt joint workload and labor cost, and also reduces the design and manufacturing cost of the lifting tool, which helps to improve the efficiency of the whole lifting process.

[0048] Further, the lifting tool further includes support brackets 5 respectively located on the upper section 110 and the lower section 120 of the glass steel tower 100. The support brackets 5 are integrally formed with the glass steel tower 100 to enhance the connection strength at the connection. After manufacturing, the tool ring plate 3 is fitted on the glass steel tower 100 and abuts against the tool ring plate 3. When the glass steel tower 100 is in an inclined state or at 90°, through the limiting action of the support bracket 5, the tool ring plate 3 can be prevented from sliding on the glass steel tower 100, thereby eliminating the safety hazard of the glass steel tower 100 slipping off.

[0049] Optionally, in the process of overturning the glass steel tower 100, in order to improve the structural strength of the tool ring plate 3, the tool ring plate 3 provided in the embodiment is further provided with first reinforcing plates 6, and a plurality of first reinforcing plates 6 are circumferentially spaced apart on the tool ring plate 3. The first reinforcing plates 6 disperse the stress received by the tool ring plate 3, effectively increase the rigidity and carrying capacity of the tool ring plate 3, and reduce possible deformation and damage.

[0050] In combination with Figure 2 , Figure 3As shown, the hoisting tool provided by the embodiment further comprises a second reinforcing plate 7, which is fixedly connected between the tool ring plate 3 and the lifting lug 4. Since the lifting lug 4 is the main force bearing component during hoisting, and the lifting lug 4 is fixedly connected to the tool ring plate 3. By additionally arranging the second reinforcing plate 7 between the lifting lug 4 and the tool ring plate 3, the connecting rigidity between the lifting lug 4 and the tool ring plate 3 can be significantly improved, thereby reducing the possibility of fracture at the connecting position of the lifting lug 4 and the tool ring plate 3.

[0051] Optionally, as Figure 4 As shown, the hoisting tool provided by the embodiment further comprises a support saddle 8, a plurality of support saddles 8 are arranged on the outer side wall of the glass steel tower 100 along the axial direction of the glass steel tower 100. On the one hand, the support saddle 8 can ensure that the glass steel tower 100 is kept in a horizontal state before being hoisted, so as to facilitate smooth lifting of the glass steel tower 100; on the other hand, the support saddle 8 can lift the glass steel tower 100 to a certain height, thereby facilitating the sleeving and installation of the tool ring plate 3 on the glass steel tower 100, and further helping to improve the hoisting efficiency.

[0052] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A method for integral hoisting of large glass reinforced plastic towers, characterized in that, The method comprises the following steps: S1, determining the structure, size and preset hoisting position of the hoisting tooling used according to the peripheral size, overall weight and local components of the glass steel tower (100); S2, determining the connection form of the glass steel tower (100) and the hoisting tooling according to the connection position of the hoisting tooling and the glass steel tower (100); S3, performing finite element modeling analysis on the hoisting tooling to calculate the feasibility of the structure and size thereof, and adjusting the structure and size of the hoisting tooling according to the calculation result; analyzing the stress condition of the hoisting tooling when the included angle between the glass steel tower (100) and the horizontal plane is 0°, 30°, 45°, 75° and 90°, and judging whether a reinforcing structure needs to be arranged on the hoisting tooling according to the stress condition; S4, performing finite element modeling analysis on the glass steel tower (100), and when the stress condition and deformation condition of the glass steel tower (100) are within the set range, hoisting the glass steel tower (100) through the hoisting tooling; analyzing the stress condition of the glass steel tower (100) when the included angle between the glass steel tower (100) and the horizontal plane is 0°, 30°, 45°, 75° and 90°.

2. The method of integral lifting of large glass steel column as claimed in claim 1 wherein, Analyzing the deformation condition of the glass steel tower (100) when the included angle between the glass steel tower (100) and the horizontal plane is 0° and 90°.

3. The method of integral lifting of large glass steel column as claimed in claim 1 wherein, The hoisting tooling is provided with two, and the two hoisting toolings are respectively located at the upper segment (110) and the lower segment (120) of the glass steel tower (100).

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