A method for turning over a large sheet structure

Abstract

The present invention discloses a method for turning over a large sheet structure, including steps S1, arranging two crawler cranes and a double-arm crane device; S2, connecting the double-arm crane device and the two crawler cranes to the sheet structure respectively; S3, lifting the sheet structure; S4, transferring the gravity of the sheet structure to the two crawler cranes; S5, releasing the connection of the double-arm crane device; S6, moving the double-arm crane device until the sheet structure is located between the two crane arms of the double-arm crane device; S7, connecting the crane main hook to one side of the sheet structure; S8, transferring the gravity of the sheet structure to the double-arm crane device; S9, releasing the connection between the two crawler cranes and the sheet structure, and completing the turning over. The present invention can turn over a sheet structure that is oversized and overweight, and can avoid the problem of easy damage during turning over due to the weak structural strength of the sheet structure.

Description

Technical Field

[0001] The invention relates to the technical field of turning over a sheet-like structure, and in particular to a method for turning over a large sheet-like structure. Background Art

[0002] In order to facilitate construction, sheet structures are generally constructed horizontally. After construction, a single crane is required to adjust the sheet structure from a horizontal state to a vertical state, and finally the crane lifts the sheet structure vertically for installation.

[0003] However, the method of turning over the sheet structure by a single crane can only be used for sheet structures that are small in size, relatively light in weight and strong in structure. Once the sheet structure is too large in size, weak in structure strength and overweight, turning over the sheet structure directly by a single crane will easily lead to damage to the sheet structure or the problem of being unable to be lifted. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to provide a method for turning over a sheet-like structure which is too large in size, weak in structural strength and overweight.

[0005] In order to solve the above technical problems, the present invention provides a method for turning over a large sheet-like structure, comprising the steps of S1, arranging two crawler cranes under one of the crane arms of a double-arm crane device; S2, connecting a crane main hook on one of the crane arms of the double-arm crane device to the sheet-like structure through a connecting piece, and connecting the crawler main hooks of the two crawler cranes to the sheet-like structure through a wire rope; S3, the double-arm crane device and the two crawler cranes simultaneously lift the sheet-like structure to move, and when the sheet-like structure moves to a preset height, stopping the lifting operation of the double-arm crane device, and continuing to lift through the two crawler cranes until the sheet-like structure is in a vertical horizontal plane; S4, slowly releasing the tension on the crane main hook until the sheet-like structure is The gravity is completely transferred to the two crawler cranes; S5, release the connection between the double-arm crane equipment and the sheet-like structure, and remove the connecting parts; S6, slowly move the double-arm crane equipment until the sheet-like structure is located between the two crane arms of the double-arm crane equipment; S7, respectively connect the crane main hooks on the two crane arms of the double-arm crane equipment to the side of the sheet-like structure close to the crawler main hook through steel wire ropes; S8, slowly increase the tension on the crane main hook, and slowly release the tension on the two crawler cranes until the gravity of the sheet-like structure is completely transferred to the double-arm crane equipment; S9, release the connection between the two crawler cranes and the sheet-like structure, and evacuate the two crawler cranes from the site, thereby completing the turning over of the sheet-like structure.

[0006] Furthermore, in the step S1, the two crawler cranes are arranged side by side and have the same structure.

[0007] Furthermore, the connecting member includes a steel wire rope and a lifting strut.

[0008] Furthermore, in step S2, the crane main hook and the crawler main hook are respectively connected to the corresponding two sides of the sheet structure.

[0009] Furthermore, the preset height is greater than the length of the sheet-like structure in an initial state.

[0010] Furthermore, in step S7, the crane main hooks on the two crane arms of the double-arm crane equipment are respectively connected to two lifting ears on one side of the sheet structure close to the crawler main hook.

[0011] Compared with the prior art, the method for turning over a large sheet-like structure in the present invention increases the lifting force on the sheet-like structure by means of two crawler cranes and a double-arm crane device, so that a sheet-like structure that is too large and overweight can be turned over, and when turning over, the sheet-like structure is raised to a preset height before turning over, thereby avoiding the problem of easy damage during turning over due to the weak structural strength of the sheet-like structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic flow chart of the steps of a method for turning over a large sheet-like structure provided by an embodiment of the present invention.

[0013] Figure 2 It is a top view of the initial arrangement of a double-arm crane device, a crawler crane and a sheet-like structure in a method for turning over a large sheet-like structure provided by an embodiment of the present invention.

[0014] Figure 3 It is a front view of the initial arrangement of a double-arm crane device, a crawler crane and a sheet-like structure in a method for turning over a large sheet-like structure provided by an embodiment of the present invention.

[0015] Figure 4 It is a side view of a sheet-like structure in a horizontal position in a method for turning over a large sheet-like structure provided by an embodiment of the present invention.

[0016] Figure 5 It is a front view of a sheet-like structure in a horizontal position in a method for turning over a large sheet-like structure provided by an embodiment of the present invention.

[0017] Figure 6 It is a schematic diagram of the position of a sheet-like structure during the movement process in a method for turning over a large sheet-like structure provided by an embodiment of the present invention.

[0018] Figure 7 It is a schematic diagram of a first connection mode between a double-arm crane device and a sheet-like structure in a method for turning over a large sheet-like structure provided by an embodiment of the present invention.

[0019] Figure 8 The invention is a schematic diagram of the connection between two crawler cranes and a sheet-like structure in a method for turning over a large sheet-like structure provided by an embodiment of the invention.

[0020] Fig. 9 It is a schematic diagram of a second connection mode between a double-arm crane device and a sheet-like structure in a method for turning over a large sheet-like structure provided by an embodiment of the present invention.

[0021] Fig.10It is a schematic diagram of a sheet structure after turning over in a method for turning over a large sheet structure provided by an embodiment of the present invention.

[0022] Among them, 1. Double-arm crane equipment; 2. Crawler crane; 3. Crane main hook; 4. Crawler main hook; 6. Sheet structure; 6. Lifting support rod; 7. Wire rope; 8. Lifting lug. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0024] The embodiment of the present invention provides a method for turning over a large sheet structure, Figure 1 To Attachment Fig.10 As shown, the following steps are included.

[0025] S1. Arrange two crawler cranes 2 under one of the crane arms of the double-arm crane equipment 1.

[0026] The two crawler cranes 2 are arranged side by side and have the same structure and model, so that the lifting force of the two crawler cranes 2 can be kept the same, so as to keep the sheet structure 6 balanced when the sheet structure 6 is moved to its starting point. Of course, the structures and models of the two crawler cranes 2 can also be different according to actual needs.

[0027] S2. Connect the crane main hook 3 on one of the crane arms of the double-arm crane equipment 1 to the sheet-like structure 6 through a connecting piece, and connect the crawler main hooks 4 of the two crawler cranes 2 to the sheet-like structure 6 through a wire rope 7.

[0028] Wherein, the connecting member includes a steel wire rope 7 and a lifting support rod 6.

[0029] The steel wire rope 7 used on the double-arm crane device 1 is not the same steel wire rope 7 as the steel wire rope 7 used on the two crawler cranes 2, that is, the steel wire rope 7 used on the double-arm crane device 1 is the first steel wire rope, and the steel wire rope 7 used on the two crawler cranes 2 is the second and third steel wire ropes respectively.

[0030] The crane main hook 3 and the crawler main hook 4 are respectively connected to the corresponding two sides of the sheet structure 6, so that the sheet structure 6 can be lifted stably during lifting. Of course, according to actual needs, the crane main hook 3 and the crawler main hook 4 can also be set at other positions.

[0031] S3, the double-arm crane device 1 and the two crawler cranes 2 lift simultaneously to drive the sheet-like structure 6 to move. When the sheet-like structure 6 moves to a preset height, the lifting operation of the double-arm crane device 1 is stopped, and the lifting is continued by the two crawler cranes 2 until the sheet-like structure 6 is in a vertical horizontal plane.

[0032] The preset height is greater than the length of the sheet structure 6 in the initial state.

[0033] S4, slowly releasing the tension on the crane main hook 3 until the gravity of the sheet structure 6 is completely transferred to the two crawler cranes 2.

[0034] S5, releasing the connection between the double-arm crane device 1 and the sheet-like structure 6, and removing the connecting piece.

[0035] S6. Slowly move the double-arm crane device 1 until the sheet-like structure 6 is located between the two crane arms of the double-arm crane device 1.

[0036] S7. Connect the crane main hooks 3 on the two crane arms of the double-arm crane equipment 1 to one side of the sheet structure 6 close to the crawler main hook 4 through the steel wire rope 7.

[0037] The crane main hooks 3 on the two crane arms of the double-arm crane device 1 are respectively connected to the two lifting ears 8 on one side of the sheet structure 6 close to the crawler main hook 4.

[0038] The steel wire rope 7 used in this step is not the same steel wire rope 7 as the steel wire rope 7 used in the above steps, that is, the steel wire rope 7 used in this step is the fourth one.

[0039] S8, slowly increase the tension on the crane main hook 3, and slowly release the tension on the two crawler cranes 2 until the gravity of the sheet structure 6 is completely transferred to the double-arm crane equipment 1.

[0040] S9, releasing the connection between the two crawler cranes 2 and the sheet-like structure 6, and evacuating the two crawler cranes 2 from the site, thereby completing the turning over of the sheet-like structure 6.

[0041] Compared with the prior art, the method for turning over a large sheet structure 6 in the present embodiment increases the lifting force on the sheet structure 6 by means of two crawler cranes 2 and a double-arm crane device 1, so that a sheet structure 6 that is too large and overweight can be turned over, and when turning over, the sheet structure 6 is raised to a preset height before turning over, thereby avoiding the problem of easy damage during turning over due to the weak structural strength of the sheet structure 6.

[0042] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A method for turning over a large sheet structure, characterized in that: The following steps are included S1. Arrange two crawler cranes under one of the crane arms of the double-arm crane equipment; S2, connecting the crane main hook on one of the crane arms of the double-arm crane equipment to the sheet-like structure through a connecting piece, and connecting the crawler main hooks of the two crawler cranes to the sheet-like structure through a wire rope; S3, the double-arm crane device and the two crawler cranes lift simultaneously to drive the sheet structure to move, and when the sheet structure moves to a preset height, the lifting operation of the double-arm crane device is stopped, and the two crawler cranes continue to lift until the sheet structure is in a vertical horizontal plane; S4, slowly releasing the tension on the main hook of the crane until the gravity of the sheet structure is completely transferred to the two crawler cranes; S5, releasing the connection between the double-arm crane device and the sheet-like structure, and removing the connecting piece; S6, slowly moving the double-arm crane device until the sheet-like structure is located between the two crane arms of the double-arm crane device; S7, connecting the crane main hooks on the two crane arms of the double-arm crane equipment to one side of the sheet structure close to the crawler main hook through steel wire ropes; S8, slowly increasing the tension on the main hook of the crane, and slowly releasing the tension on the two crawler cranes until the gravity of the sheet structure is completely transferred to the double-arm crane equipment; S9, releasing the connection between the two crawler cranes and the sheet-like structure, and evacuating the two crawler cranes from the site, thereby completing the turning over of the sheet-like structure.

2. The method for turning over a large sheet-like structure according to claim 1, characterized in that: In the step S1, the two crawler cranes are arranged side by side and have the same structure.

3. The method for turning over a large sheet-like structure according to claim 1, characterized in that: The connecting piece includes a steel wire rope and a lifting support rod.

4. The method for turning over a large sheet-like structure according to claim 1, characterized in that: In the step S2, the crane main hook and the crawler main hook are respectively connected to the corresponding two sides of the sheet structure.

5. The method for turning over a large sheet-like structure according to claim 1, characterized in that: The preset height is greater than the length of the sheet-like structure in an initial state.

6. The method for turning over a large sheet-like structure according to claim 1, characterized in that: In the step S7, the crane main hooks on the two crane arms of the double-arm crane equipment are respectively connected to the two lifting ears on the side of the sheet structure close to the crawler main hook.

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