Sectional inclined hoisting method for upper steel structure frame of belt vestibule

Abstract

The invention provides a subsection inclined hoisting method for an upper steel structure frame of a belt vestibule. The subsection inclined hoisting method comprises the steps that the upper steel structure frame of the belt vestibule of each sealing-tape machine is divided into two sections of steel structures in advance; each section of steel structure is spliced, two lifting lugs are arranged on the two sides of two different steel columns of each section of steel structure respectively, and a lifting steel wire rope is installed on each lifting lug; according to the arrangement positions of the lifting lugs, the length of the steel wire rope of each lifting lug is determined, and the included angle of the two diagonal steel wire ropes located on different steel columns is smaller than 90 degrees; a cable rope is tied and hung at the end part of each section of steel structure, so that each section of steel structure is prevented from steering in the hoisting process; and hoisting the steel wire ropes which are connected in a diagonal manner through a hoisting machine so as to drive each section of steel structure to be hoisted and mounted at a preset position, so that segmented hoisting of the upper steel structure frame of the belt vestibule is completed. By means of the method, the problems that an existing belt vestibule upper steel structure frame is tedious in hoisting mode, inaccurate in installation precision and the like can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical steel structure installation, and in particular to a method for obliquely lifting a steel structure frame in sections on a belt corridor. Background Art

[0002] In recent years, the environmental capacity and carrying capacity of important steel production areas have become increasingly constrained, and the demand for further improvement of environmental quality is extremely urgent, which has urged the steel industry to continuously improve its environmental protection and energy conservation levels and upgrade its environmental protection management technologies.

[0003] Traditionally, raw material transportation in the steel industry is open-air transportation, which has a great impact on the environment. Now the belt conveyors for open-air transportation need to be closed. However, since there are two belt conveyors in parallel and the original belt conveyors have a large inclination angle, it is extremely difficult to install the upper structure in a closed manner. Therefore, it is necessary to study a method for oblique lifting of the upper steel structure frame of the belt corridor in sections. Summary of the invention

[0004] In view of the above problems, an object of the present invention is to provide a method for obliquely lifting the upper steel structure frame of a belt corridor in sections, so as to solve the problems of complicated lifting methods and inaccurate installation precision of the existing upper steel structure frame of the belt corridor.

[0005] The present invention provides a method for obliquely hoisting the upper steel structure frame of a belt corridor in sections, and performs closed installation on the upper steel structure frames of the belt corridors of two parallel belt conveyors. The method comprises:

[0006] S1: Divide the upper steel structure frame of the belt corridor of each belt conveyor into two sections of steel structure in advance;

[0007] S2: Assemble each section of the steel structure, set two lifting ears on both sides of two different steel columns of each section of the steel structure, and install a lifting wire rope on each lifting ear;

[0008] S3: Determine the length of the steel wire rope of each lifting eye according to the setting position of the lifting eye, wherein the angle between two diagonally opposite steel wire ropes located on different steel columns is less than 90 degrees;

[0009] S4: Hang the guy rope at the end of each section of the steel structure to prevent each section of the steel structure from turning during the lifting process;

[0010] S5: Use a lifting machine to lift the diagonally connected steel wire ropes to drive each section of the steel structure to be lifted and installed at the preset position, thereby completing the segmented lifting of the upper steel structure frame of the belt corridor.

[0011] Preferably, in step S1,

[0012] Steel beams are arranged on each section of the steel structure, and the steel beams of the two sections of the steel structure are connected to each other.

[0013] The upper steel structure frame of the belt corridor is divided into the two sections of steel structure through the steel beam connection of the two sections of steel structure.

[0014] Preferably, in step S2, the lifting lugs are welded to both sides of the corresponding steel column by full welding.

[0015] Preferably, in step S2, the surface of the assembled steel structure is sealed with a membrane structure.

[0016] Preferably, in step S3,

[0017] Determining the length of the steel wire rope of each lifting eye according to the setting position of the lifting eye comprises the following steps:

[0018] Determine the corridor inclination angle of each section of the steel structure when hoisting each section of the steel structure according to the pre-installation setting of the upper steel structure frame;

[0019] According to the setting positions of the lifting ears of the two different steel columns, the length and width dimensions of the corridor between the two lifting ears of the different steel columns are determined;

[0020] The length of the steel wire rope of each lifting eye is determined according to the inclination angle of the corridor, the angle between the two diagonal steel wire ropes, and the dimensions of the corridor in the length direction and the width direction between the two lifting eyes.

[0021] Preferably, the lengths of the two diagonal steel wire ropes are L1 and L2 respectively, and the formula used is as follows:

[0022]

[0023] Among them, α represents the inclination angle of the corridor; β represents the angle between two diagonal steel wire ropes;

[0024] x represents the dimension of the corridor length between the two lifting ears;

[0025] y represents the dimension of the corridor width between the two hanging ears;

[0026] H1 represents the horizontal height difference after the two diagonally opposite lifting ears are installed in place;

[0027] S1 represents the horizontal projection length between two diagonally opposite wire rope lifting ears;

[0028] L1 represents the length of the short end wire rope; L2 represents the length of the long end wire rope.

[0029] Preferably, in step S5,

[0030] Each section of the steel structure is driven by steel wire ropes to move at an inclined angle along the corridor during the hoisting process;

[0031] First, each section of the steel structure is installed on a fixed support fixed in a preset position;

[0032] Then, each section of the steel structure is mounted on the sliding support installed on each section of the steel structure;

[0033] Each section of the steel structure is closed and installed on two parallel belt conveyors through the fixed support and the sliding support.

[0034] It can be seen from the above technical scheme that the method for oblique lifting of the upper steel structure frame of the belt corridor provided by the present invention is to divide the upper steel structure frame of the belt corridor of each belt conveyor into two sections of steel structure, and during the lifting process, each section of the steel structure moves at the inclination angle of the corridor, and the lifting is completed in sections in sequence. This lifting method solves the problems of cumbersome lifting steps and difficulty in ensuring accuracy of the upper steel structure frame of the existing belt corridor, thereby ensuring high-quality and safe installation of the upper steel structure frame of the belt corridor.

[0035] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0037] Figure 1 It is a schematic diagram of the process of the segmented oblique hoisting method of the upper steel structure frame of the belt corridor according to an embodiment of the present invention;

[0038] Figure 2 Schematic diagram of the upper steel structure frame of the belt corridor according to an embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of hoisting the upper steel structure frame of the belt corridor according to an embodiment of the present invention;

[0040] Figure 4 It is a schematic diagram of the hoisting state of the upper steel structure frame of the belt corridor according to an embodiment of the present invention;

[0041] Figure 5 It is a schematic diagram of the cross-sectional structure of the upper steel structure frame of the belt corridor according to an embodiment of the present invention.

[0042] Reference numerals include:

[0043] 1. The first section of steel structure; 2. The third section of steel structure; 3. The second section of steel structure; 4. The fourth section of steel structure; 5. Long end steel wire rope; 6. Short end steel wire rope; 7. Corbel; 8. Fixed support; 9. Sliding support; 10. Lifting lug; 11. Outer steel column; 12. Inner steel column; 13. Steel beam connection; 14. Steel beam; 15. Membrane structure; 16. Wind rope.

[0044] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0045] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0046] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In view of the aforementioned problems of complicated hoisting method and inaccurate installation precision of the existing upper steel structure frame of the belt corridor, the present invention provides a segmented oblique hoisting method for the upper steel structure frame of the belt corridor.

[0048] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] In order to illustrate the segmented oblique hoisting method of the upper steel structure frame of the belt corridor provided by the present invention, Figure 1 The process of the segmented oblique lifting method of the upper steel structure frame of the belt corridor is shown.

[0050] like Figure 1 As shown, the present invention provides a method for obliquely hoisting the upper steel structure frame of the belt corridor in sections, which performs closed installation on the upper steel structure frames of the belt corridors of two parallel belt conveyors, comprising:

[0051] S1: Divide the upper steel structure frame of the belt corridor of each belt conveyor into two sections of steel structure in advance;

[0052] S2: Assemble each section of the steel structure, set two lifting ears on both sides of two different steel columns of each section of the steel structure, and install a lifting wire rope on each lifting ear;

[0053] S3: Determine the length of the steel wire rope of each lifting eye according to the setting position of the lifting eye, wherein the angle between two diagonally opposite steel wire ropes located on different steel columns is less than 90 degrees;

[0054] S4: Hang the guy rope at the end of each section of the steel structure to prevent each section of the steel structure from turning during the lifting process;

[0055] S5: Use a lifting machine to lift the diagonally connected steel wire ropes to drive each section of the steel structure to be lifted and installed at the preset position, thereby completing the segmented lifting of the upper steel structure frame of the belt corridor.

[0056] In an embodiment of the present invention, the upper steel structure frame of the belt corridor of each belt conveyor is divided into two sections of steel structure, and each section of the steel structure moves at the inclination angle of the corridor during the lifting process, and the lifting is completed in sections in sequence.

[0057] In order to explain in detail the specific process of the segmented oblique lifting method of the upper steel structure frame of the belt corridor, Figure 1 Combination Figures 2 to 5 , the segmented oblique lifting method of the upper steel structure frame of the belt corridor was exemplified and marked from different angles.

[0058] In step S1, before the upper steel structure frames of the belt corridors of two parallel belt conveyors are closed and installed, the upper steel structure frames of the belt corridors are segmented. The upper steel structure frames of the belt corridors on the two belt conveyors are respectively divided into a first steel structure 1, a second steel structure 3, a third steel structure 2 and a fourth steel structure 4, wherein the first steel structure 1 and the second steel structure 3 are the upper steel structure frames of the belt corridor on one of the belt conveyors, the third steel structure 2 and the fourth steel structure 4 are the upper steel structure frames of the belt corridor on the other belt conveyor, and each section of the steel structure is provided with a steel beam 14, the steel beams of the first steel structure 1 and the second steel structure 3 are connected to each other, the steel beams of the third steel structure 2 and the fourth steel structure 4 are connected to each other, and the first steel structure 1 and the second steel structure 3, and the third steel structure 2 and the fourth steel structure 4 are segmented by steel beam connections 13. That is, a steel beam 14 and a corbel 7 are respectively arranged on each section of the steel structure, and the steel beams 14 of the two sections of the steel structure are connected to each other, wherein the upper steel structure frame of the upper steel structure frame of the belt corridor is divided into the two sections of the steel structure through the steel beam connection 13 of the two sections of the steel structure.

[0059] In step S2, four sections of steel structure are assembled on the ground, namely, the first section of steel structure 1, the second section of steel structure 3, the third section of steel structure 2 and the fourth section of steel structure 4 are assembled respectively, and two lifting ears are respectively set on both sides of two different steel columns of each section of steel structure. For example, lifting ears are respectively welded on the 4th steel column and the 7th steel column on both sides of each section of steel structure, that is, the outer steel column 11 and the inner steel column 12 of the 4th steel column are respectively provided with lifting ears 10, and the outer steel column and the inner steel column of the 7th steel column are respectively provided with lifting ears, that is, each section of steel structure is provided with 4 lifting ears. In specific applications, the lifting ears are welded to both sides of the corresponding steel columns by full welding, and the surface of the assembled steel structure is sealed with a membrane structure 15.

[0060] Among them, a hoisting wire rope is installed on each lifting lug, and each section of the steel structure is provided with 4 wire ropes. It should be noted that the two diagonal wire ropes are respectively the long-end wire rope 5 hoisted at the outer steel column 11 and the short-end wire rope 6 hoisted at the inner steel column 12, or the short-end wire rope 6 hoisted at the outer steel column 11 and the long-end wire rope 5 hoisted at the inner steel column 12. In specific applications, the specific positions of the long-end wire rope 5 and the short-end wire rope 6 are set according to actual conditions, and specific limitations are made here. During the hoisting process, 4 wire ropes are hoisted by a hoisting machine to hoist each section of the steel structure.

[0061] In step S3, the length of the steel wire rope of each lifting eye is determined according to the setting position of the lifting eye, including the following steps:

[0062] Determine the corridor inclination angle of each section of the steel structure when hoisting each section of the steel structure according to the pre-installation setting of the upper steel structure frame;

[0063] According to the setting positions of the lifting ears of the two different steel columns, the length and width dimensions of the corridor between the two lifting ears of the different steel columns are determined;

[0064] The length of the steel wire rope of each lifting eye is determined according to the inclination angle of the corridor, the angle between the two diagonal steel wire ropes, and the dimensions of the corridor in the length direction and the width direction between the two lifting eyes.

[0065] The lengths of the two diagonal steel wire ropes are L1 and L2 respectively, and the formula used is as follows:

[0066]

[0067] Among them, α represents the inclination angle of the corridor, and β represents the angle between two diagonal steel cables;

[0068] x represents the dimension of the corridor length between the two lifting ears;

[0069] y represents the dimension of the corridor width between the two hanging ears;

[0070] H1 represents the horizontal height difference after the two diagonally opposite lifting ears are installed in place;

[0071] S1 represents the horizontal projection length between two diagonally opposite wire rope lifting ears;

[0072] L1 represents the length of the short end wire rope; L2 represents the length of the long end wire rope.

[0073] In specific applications, the inclination angle of the steel structure corridor during hoisting can be determined through the steel structure design drawing and the elevation measurement of the steel structure platform. The distance between the 4th and 7th steel columns of the four sections of steel structure can be determined by on-site measurement. The distance between the inner and outer steel columns of the 4th steel column of the four sections of steel structure, and the distance between the inner and outer steel columns of the 7th steel column can be determined by on-site measurement. Three sets of data can be obtained from the above, namely the corridor inclination angle α, the dimension x of the corridor length direction between the two lifting ears, and the dimension y of the corridor width direction between the two lifting ears. Then determine that the angle between the two diagonally assembled steel wire ropes is less than or equal to 90°. The lengths of the four steel wire ropes used for hoisting can be calculated through the above four sets of data to ensure that the inclination angle of the structure during the hoisting process is consistent with the original corridor inclination angle, so as to ensure the accuracy of the installation process.

[0074] In step S4, before lifting, wind ropes 16 are respectively tied to the two ends of each section of the steel structure to fix the steel structure in the air before it is in place, so as to prevent the steel structure from turning sharply in the air; in addition, before lifting, the parts of the original corridor position that affect the placement of the structure are cleaned in advance.

[0075] In step S5, each section of the steel structure is driven by a steel wire rope to move at the inclination angle of the corridor during the lifting process; each section of the steel structure is first fixed to a fixed support 8 at a preset position; then the steel structure is installed on a sliding support 9; each section of the steel structure is installed on two parallel belt conveyors through the fixed support 8 and the sliding support 9.

[0076] In specific applications, during the hoisting process of each section of steel structure, each section of steel structure is hoisted from the ground. It is strictly forbidden to stand around the steel structure during hoisting, especially around the structure end in the direction of the long end wire rope 5. It is strictly forbidden to have other items that affect the hoisting of the structure. In addition, the hoisting height of the steel structure and the rotation speed of the aerial steel structure must be strictly monitored during the hoisting process. Before positioning, fine-tuning is performed through the guy rope 16 until the steel structure is in place. After positioning, the position of the fixed support 8 is fixed first, and then the position of the sliding support 9 is fixed. After both ends are fixed, the wire rope is loosened and the lifting lug 10 is removed. The remaining three sections of the structure can be hoisted in sequence.

[0077] It can be seen from the above technical scheme that the method for oblique lifting of the upper steel structure frame of the belt corridor provided by the present invention is to divide the upper steel structure frame of the belt corridor of each belt conveyor into two sections of steel structure, and during the lifting process, each section of the steel structure moves at the inclination angle of the corridor, and the lifting is completed in sections in sequence. This lifting method solves the problems of cumbersome lifting steps and difficulty in ensuring accuracy of the upper steel structure frame of the existing belt corridor, thereby ensuring high-quality and safe installation of the upper steel structure frame of the belt corridor.

[0078] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A method for obliquely hoisting the upper steel structure frame of a belt corridor in sections, which is used to close and install the upper steel structure frames of the belt corridors of two parallel belt conveyors, characterized in that: The method comprises: S1: Divide the upper steel structure frame of the belt corridor of each belt conveyor into two sections of steel structure in advance; S2: Assemble each section of the steel structure, set two lifting ears on both sides of two different steel columns of each section of the steel structure, and install a lifting wire rope on each lifting ear; S3: Determine the length of the steel wire rope of each lifting eye according to the setting position of the lifting eye, wherein the angle between two diagonally opposite steel wire ropes located on different steel columns is less than 90 degrees; S4: Hang the guy rope at the end of each section of the steel structure to prevent each section of the steel structure from turning during the lifting process; S5: Use a lifting machine to lift the diagonally connected steel wire ropes to drive each section of the steel structure to be lifted and installed at the preset position, thereby completing the segmented lifting of the upper steel structure frame of the belt corridor.

2. The method for obliquely lifting the upper steel structure frame of the belt corridor in sections according to claim 1 is characterized in that: In step S1, Steel beams are arranged on each section of the steel structure, and the steel beams of the two sections of the steel structure are connected to each other. The upper steel structure frame of the belt corridor is divided into the two sections of steel structure through the steel beam connection of the two sections of steel structure.

3. The method for obliquely hoisting the upper steel structure frame of the belt corridor in sections according to claim 1 is characterized in that: In step S2, the lifting lugs are welded to both sides of the corresponding steel column by full welding.

4. The method for obliquely hoisting the upper steel structure frame of the belt corridor in sections according to claim 1 is characterized in that: In step S2, the surface of the assembled steel structure is sealed with a membrane structure.

5. The method for obliquely hoisting the upper steel structure frame of the belt corridor in sections according to claim 1 is characterized in that: In step S3, Determining the length of the steel wire rope of each lifting eye according to the setting position of the lifting eye comprises the following steps: Determine the corridor inclination angle of each section of the steel structure when hoisting each section of the steel structure according to the pre-installation setting of the upper steel structure frame; According to the setting positions of the lifting ears of the two different steel columns, the length and width dimensions of the corridor between the two lifting ears of the different steel columns are determined; The length of the steel wire rope of each lifting eye is determined according to the inclination angle of the corridor, the angle between the two diagonal steel wire ropes, and the dimensions of the corridor in the length direction and the width direction between the two lifting eyes.

6. The method for obliquely hoisting the upper steel structure frame of the belt corridor in sections according to claim 5 is characterized in that: The lengths of the two diagonal steel wire ropes are L1 and L2 respectively, and the formula used is as follows: H1=x sin∝ Among them, α represents the inclination angle of the corridor; β represents the angle between two diagonal steel wire ropes; x represents the dimension of the corridor length between the two lifting ears; y represents the dimension of the corridor width between the two hanging ears; H1 represents the horizontal height difference after the two diagonally opposite lifting ears are installed in place; S1 represents the horizontal projection length between two diagonally opposite wire rope lifting ears; L1 represents the length of the short end wire rope; L2 represents the length of the long end wire rope.

7. The method for obliquely hoisting the upper steel structure frame of the belt corridor in sections according to claim 6 is characterized in that: In step S5, Each section of the steel structure is driven by steel wire ropes to move at an inclined angle along the corridor during the hoisting process; First, fix each section of the steel structure on a fixed support at a preset position; Each section of the steel structure is then mounted on sliding supports; Each section of the steel structure is installed on two parallel belt conveyors through the fixed support and the sliding support.

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