Method for hoisting large-angle inclined vestibule in place at one time in narrow area

Abstract

The invention relates to the technical field of building construction, in particular to a one-time hoisting in-place method for a large-angle inclined vestibule in a narrow area, which comprises the following steps: selecting a crane standing point, and splicing vestibule components at the crane standing point; two groups of lifting lugs are welded on the front and rear sides of the upper stress component of the vestibule; selecting a steel wire rope and a chain block according to the weight of the vestibule, connecting one end of the steel wire rope with the rear group of lifting lugs, connecting the other end of the steel wire rope with a crane hook, connecting a lifting chain of the chain block with the front group of lifting lugs, and connecting a hook of the chain block with the crane hook; the vestibule is subjected to trial hoisting, and after trial hoisting is stable, a worker pulls a hand pulling chain of a chain block to adjust the length of a hoisting chain, so that the angle of the vestibule after trial hoisting is consistent with the angle of the vestibule after being installed in place; and the vestibule is hoisted to the installation position through a crane to complete one-time hoisting in place, the mechanical and manual use cost can be reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a method for lifting a large-angle inclined corridor in a narrow area into position in one go. Background Art

[0002] A corridor is a structural structure that connects two buildings to meet specific construction requirements without occupying ground space. It is widely used in various industrial buildings. Steel corridors are typically hoisted after being assembled in single sections. Due to construction requirements, corridors are often installed as inclined corridors, typically between two buildings, overlapping the existing building's brackets. This results in the distance between the two buildings being shorter than the corridor's length when hoisted horizontally. Therefore, it is crucial to adjust the corridor's hoisting angle before installation. Existing hoisting methods use four steel wire ropes. Due to the diverse types and weights of steel components in corridors, it's impossible to weld the lifting lugs into the correct position in one go to meet the required angle. Trial hoists are the only way to determine the final position of the lifting lugs. Alternatively, two cranes can be used for hoisting, but positioning both cranes in confined areas is a challenge, increasing the time required for hoisting and resulting in excessive waste in labor and machinery costs. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a method for lifting a large-angle inclined corridor in a narrow area into position in one go.

[0004] The technical solution adopted by the present invention to solve its technical problem is: A method for lifting and placing a large-angle inclined corridor in a narrow area in one step, comprising: Step 1: Select the crane station location and assemble the corridor components at the crane station location; Step 2: After the corridor is assembled, weld two sets of lifting lugs on the front and rear sides of the upper load-bearing components of the corridor; Step 3: Select a wire rope and hand hoist according to the weight of the corridor, and connect one end of the wire rope to a set of lifting eyes at the rear side and the other end to the crane hook. Connect the lifting chain of the hand hoist to a set of lifting eyes at the front side and the hook of the hand hoist to the crane hook. Step 4: After the connection is completed, the corridor is tested and hoisted. After the test hoist is stable, the worker pulls the hand chain of the hand hoist to adjust the length of the lifting chain, so that the angle of the corridor after the test hoist is consistent with the angle of the corridor after installation; Step 5: After the adjustment is completed, the corridor is lifted to the installation position by a crane, and the corridor is welded to the corbel embedded parts in the buildings on both sides. The wire rope and hand hoist are removed to complete the lifting into place.

[0005] Preferably, a further technical solution of the present invention is: Preferably, while welding the lifting ears in step 2, ribs are welded at corresponding positions of the upper load-bearing components of the corridor for reinforcement.

[0006] Preferably, each group of lifting ears includes two lifting ears arranged opposite to each other on the left and right sides.

[0007] Preferably, in step four, the length of the lifting chain of the hand winch is adjusted and the lifting angle of the corridor is adjusted to achieve the purpose of lifting into place in one go.

[0008] Preferably, the test lifting position is 200 mm from the ground.

[0009] Preferably, when assembling the corridor components at the crane station in step one, the corridor assembly is completed within the lifting rotation radius of the crane without affecting the crane station.

[0010] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features: 1. Compared with the single-machine wire rope four-point lifting method: This completely solves the problem of excessive deviation in the corridor hoisting angle due to improper lug welding position, which makes it impossible to hoist into place in one go and requires multiple adjustments to the lug position. This greatly saves time and machinery usage costs.

[0011] 2. Compared with the double-machine hoisting method: Double-machine hoisting is to use two cranes to hoist the corridor. Although it can solve the problem of corridor hoisting angle, due to the small space, the site cannot meet the needs of two cranes. Moreover, the use of two cranes will greatly increase the corridor hoisting time and machinery usage, and increase the hoisting cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a large-angle inclined corridor in a narrow area being hoisted into place in one go according to an embodiment of the present invention.

[0013] Explanation of the accompanying numbers: 1. Crane; 2. Corridor; 3. Lifting eye; 4. Wire rope; 5. Hand hoist; 6. Crane hook; 7. Lifting chain; 8. Hook; 9. Hand chain; 10. Buildings on both sides; 11. Corbel embedded parts. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with specific embodiments. The purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0015] like Figure 1 As shown in the figure, in this embodiment, a method for lifting a large-angle inclined corridor in a narrow area into position in one step includes: Step 1: Select crane station 1 and assemble corridor components at crane station 1; Step 2: After the corridor 2 is assembled, two sets of lifting lugs 3 are welded on the front and rear sides of the upper load-bearing components of the corridor 2; Step 3: Select a wire rope 4 and a hand hoist 5 according to the weight of the corridor 2, and connect one end of the wire rope 4 to a set of lifting eyes 3 on the rear side and the other end to the crane hook 6, connect the lifting chain 7 of the hand hoist 5 to a set of lifting eyes 3 on the front side, and connect the hook 8 of the hand hoist 5 to the crane hook 6; Step 4: After the connection is completed, the corridor 2 is tested and hoisted. After the test hoist is stable, the worker pulls the hand chain 9 of the hand hoist 5 to adjust the length of the lifting chain 7 so that the angle of the corridor 2 after the test hoist is consistent with the angle of the corridor 2 after installation; Step 5: After the adjustment is completed, the corridor 2 is lifted to the installation position by the crane 1, and the corridor 2 is welded to the bracket embedded parts 11 in the buildings 10 on both sides. The wire rope 4 and the hand hoist 5 are removed to complete the lifting into place.

[0016] During implementation, while welding the lifting lugs 3 in step 2, ribs are welded at corresponding positions of the upper load-bearing components of the corridor 2 for reinforcement.

[0017] In practice, each group of lifting ears 3 includes two lifting ears arranged opposite to each other on the left and right sides.

[0018] During implementation, in step four, the length of the lifting chain 7 of the hand hoist 5 is adjusted to adjust the lifting angle of the corridor 2, so as to achieve the purpose of lifting into place in one go.

[0019] During implementation, the test lifting position is 200mm from the ground.

[0020] During implementation, when assembling corridor components at the crane 1 station in step 1, the corridor assembly is completed within the lifting rotation radius of the crane 1 without affecting the crane station.

[0021] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Any equivalent changes made by using the contents of the present invention description and the drawings are included in the scope of the present invention.

Claims

1. A method for lifting a large-angle inclined corridor in a narrow area into position in one go, characterized in that: include: Step 1: Select the crane station location and assemble the corridor components at the crane station location; Step 2: After the corridor is assembled, weld two sets of lifting lugs on the front and rear sides of the upper load-bearing components of the corridor; Step 3: Select a wire rope and hand hoist according to the weight of the corridor, and connect one end of the wire rope to a set of lifting eyes at the rear side and the other end to the crane hook. Connect the lifting chain of the hand hoist to a set of lifting eyes at the front side and the hook of the hand hoist to the crane hook. Step 4: After the connection is completed, the corridor is tested and hoisted. After the test hoist is stable, the worker pulls the hand chain of the hand hoist to adjust the length of the lifting chain, so that the angle of the corridor after the test hoist is consistent with the angle of the corridor after installation; Step 5: After the adjustment is completed, the corridor is lifted to the installation position by a crane, and the corridor is welded to the corbel embedded parts in the buildings on both sides. The wire rope and hand hoist are removed to complete the lifting into place.

2. The method for lifting a large-angle inclined corridor in a narrow area in one step according to claim 1 is characterized in that: While welding the lifting lugs in step 2, ribs are welded at the corresponding positions of the upper load-bearing components of the corridor for reinforcement.

3. The method for lifting a large-angle inclined corridor in a narrow area in one step according to claim 1 is characterized in that: Each set of lifting eyes includes two lifting eyes arranged opposite to each other on the left and right sides.

4. The method for lifting a large-angle inclined corridor in a narrow area in one step according to claim 1 is characterized in that: In step 4, the length of the hand hoist chain is adjusted and the lifting angle of the corridor is adjusted to achieve the purpose of lifting into place in one go.

5. The method for lifting a large-angle inclined corridor in a narrow area in one step according to claim 1 is characterized in that: The test lifting position is 200mm from the ground.

6. The method for lifting a large-angle inclined corridor in a narrow area in one go according to claim 1 is characterized in that: When assembling the corridor components at the crane station in step 1, the corridor assembly is completed within the lifting rotation radius of the crane without affecting the crane station.

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