Steel frame hoisting equipment and hoisting method

Abstract

The present application relates to the technical field of hoisting of steel structures for building construction, improves the problem that the current steel frame needs secondary hoisting, and discloses a steel frame hoisting equipment and hoisting method, including a first tower crane and a second tower crane, wherein there is a parking space for a transport vehicle between the first tower crane and the second tower crane, the first tower crane is provided with a first boom and a rotating cooperative boom, the second tower crane is provided with a second boom, the first boom, the rotating cooperative boom and the second boom are all provided with two spaced traction ropes with hooks, the rotating cooperative boom is installed with a connecting frame, and an articulated seat is installed on the side of the connecting frame, when the steel frame is hoisted upward in a horizontal posture, one end of the steel frame can cooperate with the articulated seat to abut against the articulated seat so that the steel frame can rotate around the articulated seat, and the present application can hoist and install the steel frame at one time without the need for secondary hoisting.

Description

Technical Field

[0001] The present application relates to the technical field of steel structure hoisting for building construction, and in particular to a steel frame hoisting device and a hoisting method. Background Art

[0002] At present, some mechanical equipment is often used in the field of housing construction, among which steel frames are needed. Steel frames are mainly hoisted by cranes. The general hoisting method adopts the symmetrical hoisting method, that is, by setting lifting ears on both sides of the steel frame, and then hoisting the two points by crane. However, the premise of such a hoisting method is that the steel frame is transported in the installed posture.

[0003] For some long steel components that need to be installed in a vertical direction, they cannot be transported in a vertical position directly due to their long length. Instead, they need to be transported in a horizontal position. Therefore, they need to be hoisted in steps. Generally, the symmetrical hoisting method is used to hoist the steel components to the designated location first, and then a rotating hinge is set on the ground, and a crane is used to rotate the steel components around the hinge to make them stand upright.

[0004] In this way, the steel components not only need to be hoisted twice, but also need to be additionally provided with rotating hinges on the ground for hoisting. At the same time, the steel components are prone to damage and deformation when they are delivered horizontally to the ground, making the overall construction inconvenient. Summary of the invention

[0005] The present application discloses a steel frame hoisting device and a hoisting method, which can hoist and install the steel frame at one time without the need for secondary hoisting.

[0006] In the first aspect, the present application provides a steel frame hoisting device, which adopts the following technical solution:

[0007] A steel frame hoisting equipment, wherein the steel frame is a rectangular frame welded from steel pipes, the hoisting equipment comprising a first tower crane and a second tower crane, wherein there is a parking space for a transport vehicle between the first tower crane and the second tower crane, the first tower crane is provided with a first boom and a rotating matching boom, the rotating matching boom is located below the first boom, the second tower crane is provided with a second boom, the first boom, the rotating matching boom and the second boom are all provided with two spaced-apart traction ropes with hooks, the rotating matching boom is installed with a connecting frame, the middle part of the connecting frame is hollow, the traction ropes of the first boom and the rotating matching boom pass through the middle of the connecting frame, and the side of the connecting frame is installed with an articulated seat, when the steel frame is hoisted upward in a horizontal posture, one end of the steel frame can cooperate with the articulated seat so that the steel frame can rotate around the articulated seat.

[0008] By adopting the above technical solution, the transport vehicle transports the steel frame horizontally to the parking interval position, the two traction cables of the first boom are connected to the two sides of the upper horizontal part of the head end of the steel frame, the two traction cables on the second boom are connected to the two sides of the upper horizontal part of the tail end of the steel frame, and the two traction cables of the rotating matching boom are connected to the two sides of the lower horizontal part of the head end of the steel frame and are not in a tensioned state.

[0009] First, the steel frame is controlled to move upward by the traction ropes on the first boom and the second boom, and moved to the specified position so that the head end of the steel frame can be against the hinge seat, so that the head end of the steel frame can rotate around the hinge seat; then the traction rope on the second boom is slowly lowered, and the traction rope on the rotating matching boom is tightened and moved upward to drive the steel frame to flip over. After the steel frame is flipped to a vertical state, the traction ropes on the first boom and the rotating matching boom are in a pulling state, and the traction rope on the second boom is not in a tightened state. At this time, the connection between the hook of the traction rope on the second boom and the steel frame is released, and the first boom and the rotating matching boom control the steel frame to move to the specified position and then move it downward for installation. In this way, there is no need for secondary step-by-step lifting, and no additional damage or deformation is caused to the steel frame.

[0010] Optionally, the connecting frame is a rectangular structure, and the side length of the connecting frame is smaller than the length of the steel frame. The connecting frame is provided with a support seat opposite to the hinge seat. When the steel frame is flipped to a vertical position, the two sides of the head end of the steel frame are respectively against the hinge seat and the support seat.

[0011] By adopting the above technical solution, the hinged seat and the supporting seat can be respectively abutted against the two sides of the head end of the steel frame during use, and support positions can be given to both sides of the steel frame, making the steel frame more stable during transportation.

[0012] Optionally, a movable support frame is provided on the connecting frame, and the movable support frame has an open state and a locked state. In the open state, the movable support frame forms an opening for the steel frame to enter the hinge seat; in the locked state, the movable support frame closes the opening to restrict the steel frame from detaching from the hinge seat.

[0013] By adopting the above technical solution, the movable support frame remains in an open state in the initial state, at which time the steel frame can enter the hinge seat through the opening. After the steel frame is in the hinge seat position, the movable support frame can be switched to a locked state. In the locked state, the movable hook can form a restriction to prevent the steel frame from detaching from the hinge seat.

[0014] Optionally, the movable support frame is a support disc rotatably arranged on the connecting frame, the support disc has a limit interval inside, and the limit interval has a gap connected to the outside, when the gap faces downward, an opening is formed for the steel frame to enter the limit interval.

[0015] By adopting the above technical solution, the steel frame enters the limit range of the supporting disc through the gap during the lifting process, and then the supporting disc rotates so that the gap is not in the downward position. At this time, it enters a locked state and the steel frame cannot be easily detached from the supporting disc.

[0016] Optionally, an arched protrusion is provided on the support disc in the limiting interval, and the limiting interval is divided by the arched protrusion to form an entry end close to the notch and a limiting end away from the notch.

[0017] By adopting the above technical solution, since the steel frame will rotate around the hinge seat position, the setting of the limit zone can prevent the steel frame from being restricted by the arched protrusion during rotation, thereby preventing the steel frame from detaching from the supporting disc.

[0018] Optionally, a magnet is provided at the end of the traction rope on the first boom, and a magnetic induction component is provided on the connecting frame. When the steel frame enters the opening of the movable support frame, the magnet at the end of the traction rope approaches the magnetic induction component, and at this time the support disc is controlled to rotate so that the support disc is switched to a locked state.

[0019] By adopting the above technical solution and arranging a magnet on the end of the traction rope, the support disc can be promptly controlled to rotate after the steel frame enters the limit interval, thereby preventing the steel frame from detaching from the support disc.

[0020] Optionally, the hinge seat and the support seat are both made of rubber material, and the lower ends of the hinge seat and the support seat have arc surfaces that match the steel pipes on the steel frame.

[0021] By adopting the above technical solution, the hinge seat and the support seat are set to rubber material, which can play a buffering effect during use and avoid the steel frame and

[0022] Optionally, the first boom and the rotating matching boom are inclined steel hook arms, and the length of the first boom is greater than the length of the rotating matching boom. The first tower crane includes a rotatable tower body, and the first boom and the rotating matching boom are arranged on the tower body.

[0023] By adopting the above technical solution, the length of the first boom is greater than that of the rotating matching boom. When the first boom and the rotating matching boom turn to one side of the parking interval, the first boom is located in front of the rotating matching boom. At this time, the two traction cables of the first boom are connected to the upper and lower sides of the head end of the steel frame, and the two traction cables of the rotating matching boom are connected to the lower and lower sides of the head end of the steel frame, and there will be no interference between the two.

[0024] In a second aspect, the present application provides a steel frame hoisting method, which adopts the following technical solution:

[0025] A steel frame hoisting method, using the above hoisting equipment, comprises the following steps:

[0026] S1. Transporting the steel frame to a parking position between the first tower crane and the second tower crane by a transport vehicle, wherein the first tower crane and the second tower crane are facing each other;

[0027] S2, the two traction cables of the first boom on the first tower crane are connected to the upper and lower sides of the head end of the steel frame, the two traction cables of the rotating matching boom are connected to the lower and lower sides of the head end of the steel frame, and the two traction cables on the second tower crane are connected to the upper and lower sides of the tail end of the steel frame;

[0028] S3, the traction ropes of the first boom and the second boom cooperate to lift the steel frame horizontally until the steel frame abuts against the hinged seat;

[0029] S4, lifting the lower side of the head end of the steel frame by rotating the traction rope of the coordinated boom, lowering the traction rope of the second boom, and controlling the steel frame to flip around the hinged seat;

[0030] S5. After the steel frame is flipped to a vertical state, the hook of the traction rope on the second boom is controlled to be detached, and the steel frame is controlled by the first tower crane to move to a designated installation position and then lowered and detached.

[0031] By adopting the above technical scheme, the first boom and the second boom can cooperate to control the lateral lifting of the steel frame, the rotating coordinated boom and the second boom can cooperate to control the flipping of the steel frame, and the first boom and the rotating coordinated boom can cooperate to control the transportation of the steel frame. There is no need for secondary lifting, and the flipping and lifting of the steel frame can be directly realized in one time.

[0032] In summary, the present application includes at least one of the following beneficial effects:

[0033] 1. The steel frame can be turned over in the air and then hoisted without the need for secondary transportation;

[0034] 2. The hinged seat on the connecting frame serves as a support point for rotation, and also cooperates with the support seat as a bottom support, and cooperates with the first boom and the rotating matching boom to realize the positioning of the steel frame in a vertical state;

[0035] 3. The movable support frame can provide support for the steel frame when it rotates, and maintain the stability of the steel frame when it rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the hoisting equipment in the embodiment of the present application when in use;

[0037] Figure 2It is a schematic diagram of the structure of the protruding connection frame in the lifting equipment in the embodiment of the present application;

[0038] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0039] Figure 4 It is a schematic diagram of the lifting equipment in the embodiment of the present application lifting the steel frame horizontally;

[0040] Figure 5 It is a schematic diagram of the lifting equipment in the embodiment of the present application flipping the steel frame in the air;

[0041] Figure 6 is a schematic diagram of the steel frame after the hoisting equipment in the embodiment of the present application flips over;

[0042] Figure 7 It is a schematic diagram of the lifting equipment in the embodiment of the present application delivering the steel frame to the specified position.

[0043] Explanation of the accompanying reference numerals: 1. first tower crane; 11. first boom; 12. rotating matching boom; 13. traction rope; 131. magnet; 14. tower body; 15. hook; 16. connecting frame; 161. articulated seat; 162. supporting seat; 163. supporting disc; 1631. limiting interval; 1632. arched protrusion; 1633. notch; 2. second tower crane; 21. second boom; 3. docking interval. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-6 This application is described in further detail. Embodiment 1

[0045] Reference Figure 1 and Figure 2 This embodiment discloses a steel frame hoisting device, wherein the steel frame is welded from steel pipes, and the hoisting device has a hook 15, and the hook 15 cooperates with the steel pipe to realize the hoisting of the steel frame. In other embodiments, a lifting lug can also be welded on the steel frame and then used in conjunction with the hook 15 of the hoisting device.

[0046] Specifically, the hoisting equipment includes a first tower crane 1 and a second tower crane 2. There is a parking area 3 for a transport vehicle between the first tower crane 1 and the second tower crane 2. The first tower crane 1 and the second tower crane 2 each include a rotatable tower body 14, and the first tower crane 1 is provided with a first boom 11 extending obliquely outward on the tower body 14. When the tower body 14 of the first tower crane 1 turns to the side of the second tower crane 2, the first boom 11 extends to the top of the parking area 3.

[0047] Reference Figure 2The second tower crane 2 is provided with a second boom 21 on the tower body 14. The first boom 11 and the second boom 21 are both provided with two spaced traction ropes 13. The ends of the traction ropes 13 have hooks 15 for hanging the steel frame. In this embodiment, the hooks 15 are anti-drop hooks. The operator can control the opening state of the hooks 15 according to the actual situation. When the transport vehicle carrying the steel frame stops at the parking area 3, the traction ropes 13 on the first boom 11 and the second boom 21 are respectively connected to the top of the head and tail ends of the steel frame through the hooks 15, and then the steel frame is lifted by the traction ropes 13 to achieve the horizontal lifting of the steel frame.

[0048] Reference Figure 2 , Figure 3 and Figure 4 Furthermore, in order to realize the aerial flipping of the steel frame, a rotating matching arm 12 extending obliquely outward is provided below the first boom 11 on the first tower crane 1. The rotating matching arm 12 is parallel to the first boom 11 and the length of the rotating matching arm 12 is less than the length of the first boom 11, so that there is a gap between the rotating matching arm 12 and the first boom 11 in the horizontal direction. The gap length between the rotating matching arm 12 and the first boom 11 is consistent with the width of the head end of the steel frame. The rotating matching arm 12 and the first boom 11 can hang on both sides of the width direction of the steel frame respectively. In the process of the steel frame being lifted horizontally, the traction rope 13 on the rotating matching arm 12 is never in a tightened force state; after the steel frame is lifted horizontally, the traction rope 13 on the rotating matching arm 12 is tightened and pulled up, the traction rope 13 on the first boom 11 remains in the same position, and the traction rope 13 on the second boom 21 is slowly lowered to control the steel structure to realize aerial flipping.

[0049] Reference Figure 2 , Figure 3 and Figure 5 In order to improve the stability of the steel frame when it is flipped in the air, an air fulcrum is set in the embodiment of the present application when the steel frame is flipped. The specific structure is as follows: a connecting frame 16 is set at the end of the rotating matching boom 12. The connecting frame 16 is a rectangular structure with a hollow middle. The traction ropes 13 on the rotating matching boom 12 and the first boom 11 pass through the middle of the connecting frame 16. The side width of the connecting frame 16 is smaller than the end face width of the head end of the steel frame. When the first boom 11 and the second boom 21 cooperate to lift the steel frame horizontally, the steel frame will be against the bottom end of the connecting frame 16 to achieve support.

[0050] The side of the connecting frame 16 is protruded with two symmetrical hinge seats 161, which are made of rubber material, and the bottom of the hinge seat 161 is provided with an arc surface adapted to the steel pipe on the steel frame. When the steel frame is lifted horizontally, the hinge seat 161 can abut against the top of the steel frame, and the steel pipe of the steel frame can abut against the arc surface of the hinge seat 161. The subsequent turning of the steel frame can rotate around the hinge seat 161 to improve the stability during rotation.

[0051] A support seat 162 is provided on the connection frame 16 at a position opposite to the hinge seat 161. The support seat 162 is made of rubber material like the hinge seat 161, and a curved surface is also provided at the bottom end of the support seat 162 to match the steel pipe of the steel frame.

[0052] The distance between the support seat 162 and the articulated seat 161 is the same as the distance when the first boom 11 and the rotating matching boom 12 vertically lift the steel frame. When the steel frame rotates to a vertical state, the two ends of the steel frame can be respectively inserted into the articulated seat 161 and the support seat 162, thereby cooperating with the first boom 11 and the rotating matching boom 12 to realize the positioning of the steel frame.

[0053] A movable support frame is provided on the side of the support seat 162 on the connecting frame 16. The movable support frame has an open state and a locked state. In the open state, the movable support frame forms an opening for the steel frame to enter the hinge seat 161; in the locked state, the movable support frame closes the opening to restrict the steel frame from leaving the hinge seat 161.

[0054] In this embodiment, the movable support frame is a support disc 163 rotatably arranged on the connection frame 16, and the support disc 163 is driven to rotate by a manually controlled motor, and the support disc 163 has a limit interval 1631 inside, and the limit interval 1631 has a notch 1633 connected to the outside, and when the notch 1633 faces downward, an opening is formed for the steel frame to enter the limit interval 1631. In other embodiments, the movable support frame can also be a support plate directly driven and controlled by a driving member such as a hydraulic cylinder. In the open state, the driving member drives the support plate away from the bottom position of the articulated seat 161; in the locked state, the driving member controls the support plate to move to the bottom of the articulated seat 161 to provide support for the steel pipe of the steel frame.

[0055] The support disc 163 is provided with an arched protrusion 1632 in the limiting interval 1631, and the limiting interval 1631 is divided into an entry end close to the notch 1633 and a limiting end away from the notch 1633 by the arched protrusion 1632. The steel pipe of the steel frame enters the limiting interval 1631 from the entry end, and then the support disc 163 rotates to allow the steel pipe of the steel frame to enter the inside of the limiting end.

[0056] In order to facilitate the operator to control the movable support frame, a warning mechanism is also provided on the connecting frame 16. The warning mechanism includes a magnet 131 provided at the end of the traction rope 13 on the rotating matching boom 12, a magnetic induction component provided on the connecting frame 16, and an additional warning device. When the magnetic induction component senses the magnet 131, it controls the warning device to emit a warning such as light or sound. This control method is a conventional technical means, so it will not be described in detail.

[0057] It should be noted that the sensing range of the magnetic induction component is relatively small. When the steel frame enters the opening of the movable support frame, the magnet 131 at the end of the traction rope 13 approaches the magnetic induction component. At this time, the magnetic induction component can sense the position of the magnet 131 and control the alarm to sound an alarm. At this time, the operator controls the support disc 163 to rotate so that the support disc 163 switches to the locked state.

[0058] The implementation principle of the steel frame hoisting equipment in the first embodiment of the present application is:

[0059] Reference Figure 4-Figure 7 When the transport vehicle transports the steel frame horizontally to the parking interval 3, the two traction cables 13 of the first boom 11 are connected to the upper and lower sides of the head end of the steel frame, the two traction cables 13 on the second boom 21 are connected to the upper and lower sides of the tail end of the steel frame, and the two traction cables 13 of the rotating matching boom 12 are connected to the lower and lower sides of the head end of the steel frame and are not in a tensioned state.

[0060] First, the steel frame is controlled to move upward in a lateral posture through the traction ropes 13 on the first boom 11 and the second boom 21, and the steel pipe at the head end of the steel frame is abutted against the hinge seat 161, so that the head end of the steel frame can rotate around the hinge seat 161. At this time, the support disc 163 rotates to provide support for the steel frame.

[0061] Then the traction rope 13 on the second boom 21 is slowly lowered, and the traction rope 13 on the rotating coordinated boom 12 is tightened and moved upward to drive the steel frame to flip over. After the steel frame flips to a vertical state, the traction rope 13 on the first boom 11 and the rotating coordinated boom 12 is in a pulling state, and the traction rope 13 on the second boom 21 is not in a tightened state. At this time, the connection between the hook 15 of the traction rope 13 on the second boom 21 and the steel frame is released, and the first boom 11 and the rotating coordinated boom 12 control the steel frame to move to a designated position and then move it downward for installation. In this way, there is no need for secondary step-by-step lifting, and no additional damage or deformation is caused to the steel frame. Embodiment 2

[0062] Embodiment 2 of the present application provides a steel frame hoisting method, comprising the following steps:

[0063] S1. Use a transport vehicle to transport the steel frame in a horizontal position to the parking area 3.

[0064] S2, the first tower crane 1 and the second tower crane 2 are both turned to the parking interval 3, and the two traction cables 13 of the first boom 11 on the first tower crane 1 are connected to the two sides of the horizontal upper part of the head end of the steel frame, the two traction cables 13 of the rotating coordinated boom 12 are connected to the two sides of the horizontal lower part of the head end of the steel frame, and the two traction cables 13 on the second tower crane 2 are connected to the two sides of the horizontal upper part of the tail end of the steel frame.

[0065] S3, the traction ropes 13 of the first boom 11 and the second boom 21 are synchronously hoisted upwards to the steel frame, and the traction ropes 13 on the rotating coordinated boom 12 are not in a taut state at this time, and no force is applied to the steel frame, until the steel pipe at the head end of the steel frame enters the hinge seat 161 to realize the positioning of the rotation point.

[0066] S4, by rotating and coordinating the traction rope 13 of the boom 12 to lift the lower side of the head end of the steel frame, the traction rope 13 of the second boom 21 is lowered, and the steel frame is controlled to flip around the hinge seat 161;

[0067] S5. After the steel frame is flipped to a vertical state, the other side of the head end of the steel frame enters the support seat 162. At this time, the support seat 162 and the articulated seat 161 cooperate with the first boom 11 and the rotating boom 12 to realize the positioning of the steel frame; then the first tower crane 1 is used to control the steel frame to move to the designated installation position to complete the overall lifting.

[0068] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steel frame hoisting device, characterized in that: The steel frame is a rectangular frame formed by welding steel pipes. The hoisting equipment comprises a first tower crane (1) and a second tower crane (2). There is a parking space for a transport vehicle between the first tower crane (1) and the second tower crane (2). The first tower crane (1) is provided with a first boom (11) and a rotating matching boom (12). The rotating matching boom (12) is located below the first boom (11). The second tower crane (2) is provided with a second boom (21). The first boom (11), the rotating matching boom (12) and the second boom (21) are all provided with two spacers. A traction rope (13) having a hook (15) is installed on the rotating matching boom (12), the middle part of the connecting frame (16) is hollow, the traction ropes (13) of the first boom (11) and the rotating matching boom (12) pass through the middle of the connecting frame (16), and an articulated seat (161) is installed on the side of the connecting frame (16). When the steel frame is lifted upward in a horizontal posture, one end of the steel frame can cooperate with the articulated seat (161) to abut against each other so that the steel frame can rotate around the articulated seat (161).

2. The steel frame hoisting equipment according to claim 1, characterized in that: The connecting frame (16) is a rectangular structure, and the side length of the connecting frame (16) is smaller than the width of the steel frame. The connecting frame (16) is provided with a support seat (162) opposite to the hinge seat (161). When the steel frame is flipped to a vertical posture, the two sides of the front end of the steel frame respectively abut against the hinge seat (161) and the support seat (162).

3. The steel frame hoisting equipment according to claim 2, characterized in that: The connecting frame (16) is provided with a movable support frame, and the movable support frame has an open state and a locked state. In the open state, the movable support frame forms an opening for the steel frame to enter the hinge seat (161); in the locked state, the movable support frame closes the opening to restrict the steel frame from leaving the hinge seat (161).

4. The steel frame hoisting equipment according to claim 3, characterized in that: The movable support frame is a support disc (163) rotatably arranged on the connecting frame (16), the support disc (163) has a limit interval (1631) inside, and the limit interval (1631) has a notch (1633) connected to the outside, and when the notch (1633) is facing downward, an opening is formed for the steel frame to enter the limit interval (1631).

5. The steel frame hoisting equipment according to claim 4, characterized in that: An arched protrusion (1632) is provided on the support disc (163) within the limiting interval (1631), and the limiting interval (1631) is divided by the arched protrusion (1632) into an entry end close to the notch (1633) and a limiting end away from the notch (1633).

6. The steel frame hoisting equipment according to claim 5, characterized in that: A magnet (131) is provided at the end of the traction rope (13) on the first boom (11), and a magnetic induction component is provided on the connection frame (16); when the steel frame enters the opening of the movable support frame, the magnet (131) at the end of the traction rope (13) approaches the magnetic induction component, and at this time, the support disc (163) is controlled to rotate so that the support disc (163) is switched to a locked state.

7. The steel frame hoisting equipment according to claim 2, characterized in that: The hinge seat (161) and the support seat (162) are both made of rubber material, and the lower ends of the hinge seat (161) and the support seat (162) have arc surfaces that match the steel pipe on the steel frame.

8. The steel frame hoisting equipment according to claim 1, characterized in that: The first boom (11) and the rotating matching boom (12) are steel hook arms arranged obliquely, and the length of the first boom (11) is greater than the length of the rotating matching boom (12). The first tower crane (1) comprises a rotatable tower body (14), and the first boom (11) and the rotating matching boom (12) are arranged on the tower body (14).

9. A method for hoisting a steel frame, using the hoisting equipment according to any one of claims 1 to 8, comprising the following steps: S1. Using a transport vehicle to transport the steel structure to a parking position between the first tower crane (1) and the second tower crane (2), wherein the first tower crane (1) and the second tower crane (2) are facing each other; S2, two traction cables (13) of the first boom (11) on the first tower crane (1) are connected to both sides of the horizontal upper part of the head end of the steel frame, two traction cables (13) of the rotatable boom (12) are connected to both sides of the horizontal lower part of the head end of the steel frame, and two traction cables (13) on the second tower crane (2) are connected to both sides of the horizontal upper part of the tail end of the steel frame; S3, the traction ropes (13) of the first boom (11) and the second boom (21) cooperate to lift the steel frame laterally until the steel frame abuts against the articulated seat (161); S4, lifting the lower side of the head end of the steel frame by rotating the traction rope (13) of the coordinated boom (12), lowering the traction rope (13) of the second boom (21), and controlling the steel frame to flip around the hinged seat (161); S5, after the steel frame is flipped to a vertical state, the hook (15) of the traction rope (13) on the second boom (21) is controlled to be disengaged, and the steel frame is controlled by the first tower crane (1) to move to a designated installation position and then lowered and unhooked.

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