Method for hoisting component at multi-layer platform

Abstract

The invention relates to the technical field of hoisting construction, in particular to a method for hoisting a component at a multilayer platform, which comprises the following steps: preparing an external bracket which comprises a main support arm and two auxiliary support arms, arranging a double-hole lifting lug at the front end of the main support arm, and respectively arranging a first hoisting point and a second hoisting point at the upper part and the lower part of the main support arm; connecting and fixing the external bracket and the N + 1 layers of steel platforms; third lifting point connecting steel wire ropes are arranged on the N + 2 layers of steel platforms, the steel wire ropes are connected with first electric hoists, the output ends of the first electric hoists are connected to the first lifting points, and the first lifting points are tensioned by the first electric hoists; a second electric hoist is connected to the second lifting point, and the output end of the second electric hoist is connected to the component for lifting; the auxiliary components are easy and convenient to manufacture and convenient to operate, and the problem that pipelines and equipment on the steel platform cannot be hoisted through a crane due to intersection operation or other reasons is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting construction, in particular to a method for hoisting components at a multi-layer platform. Background Art

[0002] In industrial and metallurgical projects, there are many cases where valves, pipes, components and other equipment are installed on multi-layer steel platforms, such as valve platforms for hot blast furnaces, gas purification valve platforms, dust removal system valve platforms, etc. The installation of equipment and facilities on these platforms is often carried out simultaneously with other projects, resulting in insufficient space for cranes outside the steel platforms. Therefore, the pipes and equipment on the steel platforms cannot be hoisted into place by cranes. Therefore, it is very important to find a method for hoisting small-tonnage components within a certain range outside the steel platform with the help of the platform itself for the smooth progress of the installation work. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a method for hoisting components on a multi-layer platform, which can hoist small-tonnage components with the help of the platform itself.

[0004] The technical solution adopted by the present invention to solve its technical problem is: A method for hoisting components at a multi-layer platform, the specific steps are as follows: S1: prepare an external bracket, which is a triangular structure, including a main arm and two auxiliary arms, the two auxiliary arms are arranged on both sides of the main arm, the front ends of the two auxiliary arms are fixedly connected to the front end of the main arm, a double-hole lifting ear is arranged at the front end of the main arm, and two lifting holes are arranged on the double-hole lifting ear, and the two lifting holes are respectively located on the upper and lower sides of the main arm, the lifting hole located on the upper side is the first lifting point, and the lifting hole located on the lower side is the second lifting point; S2: Connect and fix the external support to the N+1 layer steel platform. When connecting, the rear ends of the main support arm and the two auxiliary support arms are fixed on the N+1 layer steel platform; S3: A third lifting point is set on the N+2-layer steel platform, a steel wire rope is fixed to the third lifting point, the other end of the steel wire rope is connected to the first electric hoist, the output end of the first electric hoist is connected to the first lifting point, and the first electric hoist is adjusted so that the third lifting point is tensioned by the force on the first lifting point; S4: The second lifting point is connected to the second electric hoist, and the output end of the second electric hoist is connected to the component. The component is hoisted and installed on the N-layer steel platform.

[0005] Preferably, a further technical solution of the present invention is: Preferably, the third lifting point on the N+2-layer steel platform includes an outer lifting ear arranged on the outside of the N+2-layer steel platform side beam and an inner lifting ear arranged on the inside of the N+2-layer steel platform side beam; in step S3, when the steel wire rope is fixed to the third lifting point, one end of the steel wire rope is tied to the hook of the first electric hoist, and then the other end passes through the outer lifting ear, the inner lifting ear in sequence and then returns to the hook of the first electric hoist to be tied and fixed.

[0006] Preferably, longitudinal connecting ribs are provided on the N+1 layer steel platform at positions corresponding to the external brackets to be connected, threads are provided on the longitudinal connecting ribs, connecting holes are provided on the main arm and the two auxiliary arms near one end of the steel platform, and the external brackets are connected and fixed via the longitudinal connecting ribs and the connecting holes.

[0007] Preferably, before the component is hoisted, a connecting lug is welded at the force balance position of the component according to the shape of the component.

[0008] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features: The method can realize the lifting of small-tonnage components through an external bracket, a double-hole lifting lug, a first electric hoist and a second electric hoist. By converting the lifting points, no motorized equipment is required, which reduces the construction cost. The auxiliary components are simple to manufacture and easy to operate, and effectively solves the problem that pipelines and equipment on the steel platform cannot be lifted by a crane due to interlaced operations or other reasons. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 is a schematic structural diagram of an embodiment of the present invention; Figure 3 is a schematic structural diagram of an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure in an embodiment of the present invention.

[0010] Explanation of the accompanying drawings: 1. Double-hole lifting eye; 2. Main support arm; 3. Auxiliary support arm; 4. External lifting eye; 5. Internal lifting eye; 6. Wire rope; 7. First electric hoist; 8. Second electric hoist; 9. N-layer steel platform; 10. N+1-layer steel platform; 11. N+2-layer steel platform; 12. Component; 13. Connecting lifting eye. DETAILED DESCRIPTION

[0011] The present invention is further described below in conjunction with specific embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0012] The present invention is mainly to solve the problem that the pipelines and equipment on the steel platform cannot be hoisted by a crane due to interleaving operations or other reasons. Figures 1 to 4 As shown, this embodiment provides a method for hoisting components at a multi-layer platform, and the specific steps are as follows: S1: prepare an external bracket, which is a triangular structure, including a main arm 2 and two auxiliary arms 3. The two auxiliary arms 3 are arranged on both sides of the main arm 2, and the front ends of the two auxiliary arms 3 are fixedly connected to the front end of the main arm 2. A double-hole lifting ear 1 is arranged at the front end of the main arm 2. Two lifting holes are arranged on the double-hole lifting ear 1. The two lifting holes are respectively located on the upper and lower sides of the main arm 2. The lifting hole on the upper side is the first lifting point, and the lifting hole on the lower side is the second lifting point. Before lifting the component 12, according to the shape of the component 12, the lifting ear 13 is welded and connected at the force balance position of the component 12. Among them, the external bracket is made of channel steel, and the double-hole lifting ear 1 is made of steel plate.

[0013] S2: Connect and fix the external bracket to the N+1 layer steel platform 10. When connected, the rear ends of the main arm 2 and the two auxiliary arms 3 are fixed on the N+1 layer steel platform 10; the third lifting point on the N+2 layer steel platform 11 includes an outer lifting lug 4 arranged on the outer side of the side beam of the N+2 layer steel platform 11 and an inner lifting lug 5 arranged on the inner side of the side beam of the N+2 layer steel platform 11.

[0014] S3: A third lifting point is set on the N+2-layer steel platform 11, and a steel wire rope 6 is fixed to the third lifting point. One end of the steel wire rope 6 is tied to the hook of the first electric hoist 7, and then the other end passes through the outer lifting ear 4 and the inner lifting ear 5 in sequence and then returns to the hook of the first electric hoist 7 to be tied and fixed; the other end of the steel wire rope 6 is connected to the first electric hoist 7, and the output end of the first electric hoist 7 is connected to the first lifting point. The first electric hoist 7 is adjusted so that the third lifting point is subjected to force to tighten the first lifting point.

[0015] S4: The second lifting point is connected to the second electric hoist 8, and the output end of the second electric hoist 8 is connected to the component 12. The component 12 is lifted and installed on the N-layer steel platform 9.

[0016] The external bracket can be fixed to the N+1 layer steel platform 10 by welding, and can also be fixed to the N+1 layer steel platform 10 by longitudinal connecting ribs. The longitudinal connecting ribs are provided with threads, and the main arm 2 and the two auxiliary arms 3 are provided with connecting holes near one end of the steel platform. The external bracket is connected and fixed by the longitudinal connecting ribs and the connecting holes. Compared with direct welding, the longitudinal connecting rib connection will not cause damage to the structure of the steel platform itself, and will not affect the bearing capacity of the original structure.

[0017] The method can realize the lifting of small-tonnage components 12 through an external bracket, a double-hole lifting lug 1, a first electric hoist 7 and a second electric hoist 8. By converting the lifting points, no motorized equipment is required, which reduces the construction cost. Each auxiliary component 12 is simple to manufacture and easy to operate, and effectively solves the problem that pipelines and equipment on the steel platform cannot be lifted by a crane due to interlaced operations or other reasons.

[0018] The above description is only the preferred embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made by using the contents of the present invention specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A method for hoisting components at a multi-layer platform, characterized in that: The specific steps are as follows: S1: prepare an external bracket, which is a triangular structure, including a main arm and two auxiliary arms, the two auxiliary arms are arranged on both sides of the main arm, the front ends of the two auxiliary arms are fixedly connected to the front end of the main arm, a double-hole lifting ear is arranged at the front end of the main arm, and two lifting holes are arranged on the double-hole lifting ear, and the two lifting holes are respectively located on the upper and lower sides of the main arm, the lifting hole located on the upper side is the first lifting point, and the lifting hole located on the lower side is the second lifting point; S2: Connect and fix the external support to the N+1 layer steel platform. When connecting, the rear ends of the main support arm and the two auxiliary support arms are fixed on the N+1 layer steel platform; S3: A third lifting point is set on the N+2-layer steel platform, a steel wire rope is fixed to the third lifting point, the other end of the steel wire rope is connected to the first electric hoist, the output end of the first electric hoist is connected to the first lifting point, and the first electric hoist is adjusted so that the third lifting point is tensioned by the force on the first lifting point; S4: The second lifting point is connected to the second electric hoist, and the output end of the second electric hoist is connected to the component. The component is hoisted and installed on the N-layer steel platform.

2. The method for hoisting components at a multi-layer platform according to claim 1, characterized in that: The third lifting point on the N+2-layer steel platform includes an outer lifting lug arranged on the outside of the N+2-layer steel platform side beam and an inner lifting lug arranged on the inside of the N+2-layer steel platform side beam; in step S3, when the steel wire rope is fixed to the third lifting point, one end of the steel wire rope is tied to the hook of the first electric hoist, and then the other end passes through the outer lifting lug and the inner lifting lug in sequence and then returns to the hook of the first electric hoist to be tied and fixed.

3. The method for hoisting components at a multi-layer platform according to claim 1, characterized in that: Longitudinal connecting ribs are arranged on the N+1 layer steel platform at positions corresponding to the external brackets to be connected. Threads are arranged on the longitudinal connecting ribs. Connecting holes are arranged on the main arm and the two auxiliary arms near one end of the steel platform. The external brackets are connected and fixed through the longitudinal connecting ribs and the connecting holes.

4. The method for hoisting components at a multi-layer platform according to claim 1, characterized in that: Before lifting the component, the connecting lugs are welded at the force balance position of the component according to the shape of the component.

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