Detachable hoisting device for large annular structure

Abstract

The utility model discloses a detachable hoisting device for a large annular structure, which comprises a hoisting frame and a hoisting point plate, the hoisting point plate is connected onto the hoisting frame, the hoisting frame is connected with a guide plate, the guide plate and the hoisting point plate are connected with pin shafts, the hoisting frame is provided with screw holes, and the screw holes are connected with the guide plate and the hoisting point plate. Bolts are screwed in the screw holes, and the ends, away from the hoisting frame, of the bolts are connected to the structure so that the structure can be hoisted. According to the detachable hoisting device for the large annular structure, the bolts connected to the hoisting frame are connected with the structure, after hoisting is finished, the bolts are dismantled, the hoisting frame is separated from the structure, when hoisting is conducted again, the hoisting frame is connected with the structure through the bolts, and hoisting is completed. Therefore, the purposes of repeated use and no occupation of operation space are achieved. The device is simple in structure, high in practicability and reliability and capable of avoiding offshore fire operation and flaw detection work and saving project cost.

Description

Technical Field

[0001] The utility model belongs to the field of marine engineering, and in particular relates to a detachable lifting device for a large annular structure. Background Art

[0002] In marine engineering and shipbuilding, traditional large-scale structure hoisting requires welding of large lifting points. After the hoisting is completed, the large lifting points generally need to be cut off at sea. When the structure needs to be hoisted again later, the originally cut lifting points need to be re-welded.

[0003] Large lifting points take up a lot of space, making the operating space, which is already very tight, even more so. It is necessary to carry out offshore hot work and flaw detection, which brings additional construction workload at sea, prolongs the construction period and increases project costs.

[0004] Therefore, it is urgent to design a detachable lifting device for large annular structures to solve the above-mentioned problem of lifting large structures. Utility Model Content

[0005] In order to solve the technical problem mentioned in the background technology that the large lifting points occupy a large space, need to be cut off at sea after lifting, and need to be re-welded when they are needed for subsequent lifting, a detachable lifting device for large annular structures is provided to solve the problem of lifting large structures.

[0006] To achieve the above-mentioned purpose, the specific technical solution of the detachable lifting device for large-scale annular structures of the present invention is as follows:

[0007] A detachable lifting device for a large annular structure includes a lifting frame and a lifting point plate. The lifting point plate is connected to the lifting frame. A guide plate is connected to the lifting frame. Pins are connected to the guide plate and the lifting point plate. Screw holes are opened on the lifting frame. Bolts are screwed into the screw holes. The ends of the bolts away from the lifting frame are connected to the structure to enable the structure to be lifted.

[0008] Furthermore, the hanging frame includes a first annular plate, a second annular plate and a circular vertical plate. The circular vertical plate is vertically welded to the first annular plate, and one end of the circular vertical plate away from the first annular plate is vertically welded to the second annular plate.

[0009] Furthermore, screw holes are provided on the first annular plate and the second annular plate, bolts are screwed into the screw holes, and the bolts are connected to the structure at one end away from the second annular plate.

[0010] Furthermore, the hanging point plate includes a first hanging point plate, a second hanging point plate and a third hanging point plate, and the first hanging point plate, the second hanging point plate and the third hanging point plate are all plugged into the first annular plate, and the first hanging point plate, the second hanging point plate and the third hanging point plate are all welded to the first annular plate, the second annular plate and the circular vertical plate.

[0011] Furthermore, the first hanging point plate, the second hanging point plate and the third hanging point plate are each provided with a hanging hole at one end away from the first annular plate, and cheek plates are welded on both sides of the hanging hole.

[0012] Furthermore, a plurality of stay plates are vertically welded on the first annular plate, and the plurality of stay plates are welded on both sides of the first hanging point plate, the second hanging point plate and the third hanging point plate.

[0013] Furthermore, a plurality of guide plates are vertically welded on the first annular plate, and the plurality of guide plates are welded on both sides of the first hanging point plate, the second hanging point plate and the third hanging point plate, on a side away from the stop plate.

[0014] Furthermore, a through hole is opened on the guide plate, a pin is inserted into the through hole, the pin passes through the through hole and the lifting hole in sequence, the pin abuts against the stop plate, and the pin is connected to the crane to lift the structure.

[0015] Furthermore, a reinforcing rib plate is welded to the circular vertical plate, one end of the reinforcing rib plate is welded to the first annular plate, and one end of the reinforcing rib plate away from the first annular plate is welded to the second annular plate.

[0016] Furthermore, the first annular plate includes a thick plate and a thin plate, the thin plate and the thick plate are welded in sequence, and the first hanging point plate, the second hanging point plate and the third hanging point plate are all welded to the thick plate.

[0017] The detachable lifting device for large annular structures of the utility model has the following advantages:

[0018] The lifting frame is connected to the structure through bolts connected to the lifting frame. After the lifting is completed, the bolts can be removed to separate the lifting frame from the structure. When lifting again, the lifting frame can be connected to the large structure with bolts, thereby achieving the purpose of reuse while not occupying operating space. The lifting frame is connected to a lifting point plate and a guide plate. The guide plate and the lifting point plate are connected to a pin shaft, which is connected to the crane to complete the lifting operation of the structure through the lifting frame. This device has a simple structure and high practicality. It can greatly reduce the workload of offshore structure lifting, avoid offshore hot work and flaw detection work, and reduce a series of subsequent inspections. It is conducive to shortening the offshore construction period, saving project costs, and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of the detachable lifting device for large-scale annular structures of the utility model;

[0020] Figure 2 This is a side view of the detachable lifting device for large annular structures of the utility model;

[0021] Figure 3 This is a top view of the detachable lifting device for large-scale annular structures of the utility model.

[0022] Description of the marks in the figure:

[0023] 1. First lifting point plate; 2. Second lifting point plate; 3. Third lifting point plate; 4. Guide plate; 5. Bolt; 6. First annular plate; 7. Second annular plate; 8. Circular vertical plate; 9. Cheek plate; 10. Stay plate; 11. Rib plate. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0025] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is intended to be within the scope of the present invention and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0026] Please refer to the attached Figure 1 To the attached Figure 3 The utility model describes a detachable lifting device for a large annular structure.

[0027] like Figure 1 As shown, the detachable hoisting device for large annular structures in the present invention includes a hoisting frame and a hoisting point plate, the hoisting point plate is connected to the hoisting frame, the hoisting frame is connected to a guide plate 4, the guide plate 4 and the hoisting point plate are connected to a pin, the hoisting frame is provided with a screw hole, a bolt 5 is screwed into the screw hole, and the bolt 5 is connected to the structure at one end away from the hoisting frame so that the structure can be hoisted. By connecting the bolt 5 connected to the hoisting frame with the structure, after the hoisting is completed, the bolt 5 is removed to separate the hoisting frame from the structure. When hoisting again, the bolt 5 is used to connect the hoisting frame to the large structure, thereby achieving the purpose of being reusable while not occupying the operating space; the hoisting frame is connected to a hoisting point plate and a guide plate 4, the guide plate 4 and the hoisting point plate are connected to a pin, and the pin is connected to the crane so that the structure can be hoisted through the hoisting frame. This device has a simple structure and high practicality. It can greatly reduce the workload of hoisting offshore structures, avoid offshore hot work and flaw detection work, and reduce a series of subsequent inspections. It is conducive to shortening offshore construction period, saving project costs, and has high reliability.

[0028] Further, if Figure 1 and Figure 2 As shown, the lifting frame includes a first annular plate 6, a second annular plate 7 and a circular vertical plate 8, the circular vertical plate 8 is vertically welded to the first annular plate 6, and the circular vertical plate 8 is vertically welded to the second annular plate 7 at one end away from the first annular plate 6; screw holes are provided on the first annular plate 6 and the second annular plate 7, and bolts 5 are screwed in the screw holes, and the bolts 5 are connected to the structure at one end away from the second annular plate 7; the hanging point plate includes a first hanging point plate 1, a second hanging point plate 2 and a third hanging point plate 3, the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are all inserted into the first annular plate 6, and the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are all welded to the first annular plate 6, the second annular plate 7 and the circular vertical plate 8.

[0029] In this embodiment, the first annular plate 6 and the second annular plate 7 are both set to be circular rings, so that the first annular plate 6 and the second annular plate 7 match the shape of the suspended structure, and the two ends of the circular vertical plate 8 are respectively welded vertically to the first annular plate 6 and the second annular plate 7, so that the first annular plate 6, the second annular plate 7 and the circular column 8 are connected to form a stable lifting structure; the first annular plate 6 and the second annular plate 7 are both provided with a plurality of screw holes, and bolts 5 are screwed into the plurality of screw holes. Preferably, the number of screwed bolts 5 is 16-20, and screw holes are also provided on the suspended structure. The bolts 5 are screwed into the screw holes on the suspended structure to connect the bolts 5 to the suspended structure. After the lifting is completed, the bolts 5 are removed and separated from the large structure. The bolts 5 are used again to connect to the suspended structure during the next lifting, thereby achieving the purpose of reusability without occupying operating space. The structure is simple and practical.

[0030] The first annular plate 6 is plugged with the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3, and the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are plugged into the notch of the first annular plate 6. After plugging, the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are all welded to the first annular plate 6 so that the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are fixedly arranged on the first annular plate 6. The first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are spaced at the same distance to ensure the stability of the lifting and adapt to multiple lifting angles. It is generally required that the angle between the lifting rope and the horizontal plane is above 60 degrees during lifting.

[0031] The first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are welded to the second annular plate 7 at one end away from the first annular plate 6, so that the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are fixedly connected to the second annular plate 7, and one side of the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are welded to the circular vertical plate 8 to strengthen the connection strength of the first annular plate 6 and the second annular plate 7.

[0032] Further, if Figure 1 As shown, the first hanging point plate 1, the second hanging point plate 2, and the third hanging point plate 3 are each provided with a hanging hole at one end away from the first annular plate 6, and cheek plates 9 are welded on both sides of the hanging holes; a plurality of stop plates 10 are vertically welded to the first annular plate 6, and the plurality of stop plates 10 are welded on both sides of the first hanging point plate 1, the second hanging point plate 2, and the third hanging point plate 3; a plurality of guide plates 4 are vertically welded to the first annular plate 6, and the plurality of guide plates 4 are welded on both sides of the first hanging point plate 1, the second hanging point plate 2, and the third hanging point plate 3 away from the stop plates 10. In this embodiment, the first hanging point plate 1, the second hanging point plate 2, and the third hanging point plate 3 are each provided with a hanging hole, and cheek plates 9 are welded on both sides of the hanging hole, so that the hanging holes are not easily deformed when subjected to force, thereby enhancing the rigidity of the first hanging point plate 1, the second hanging point plate 2, and the third hanging point plate 3.

[0033] A plurality of stop plates 10 are vertically welded on the first annular plate 6, and the stop plates 10 are respectively arranged on both sides of the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3. An arc notch is provided at one end of the stop plate 10 away from the first annular plate 3, and the arc notch and the hanging hole are arranged on the same horizontal line; a plurality of guide plates 4 are vertically welded on the first annular plate 6, and the guide plates 4 are respectively arranged on both sides of the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3, and the stop plate 10 is located between the hanging point plate and the guide plate 4.

[0034] Further, if Figure 1 and Figure 3 As shown, a through hole is opened on the guide plate 4, and a pin is inserted into the through hole. The pin passes through the through hole and the lifting hole in sequence, and the pin abuts on the stop plate 10. The pin is connected to the crane to lift the structure; a reinforcing rib plate 11 is welded on the circular vertical plate 8, and one end of the reinforcing rib plate 11 is welded to the first annular plate 6, and the end of the reinforcing rib plate 11 away from the first annular plate 6 is welded to the second annular plate 7; the first annular plate 6 includes a thick plate and a thin plate, and the thin plate and the thick plate are welded in sequence, and the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are all welded to the thick plate.

[0035] In this embodiment, the guide plate 4 is provided with a through hole, and the through hole of the guide plate 4 is on the same horizontal line as the hanging hole. A pin is inserted into the through hole, and the pin passes through the through hole and the hanging hole in sequence. A lifting ring is provided on the pin, and the crane is connected to the lifting ring to enable the lifting device to lift. After the pin passes through the through hole, it first abuts against the arc notch of the stop plate 10, so that the pin is stably set on the hanging point plate and the guide plate 4. A plurality of reinforcing ribs 11 are welded to the circular vertical plate 8. The plurality of reinforcing ribs 11 are arranged in parallel. One end of the reinforcing rib 11 is welded to the first annular plate 6, and the end of the reinforcing rib 11 away from the first annular plate 6 is welded to the second annular plate 7, so that the connection structure between the first annular plate 6, the second annular plate 7 and the circular vertical plate 8 is stable.

[0036] The first annular plate 6 is formed by welding thick plates and thin plates at intervals. Preferably, the second annular plate 8 is also formed by welding thick plates and thin plates at intervals. The first hanging point plate 1, the second hanging point plate 2, the third hanging point plate 3, the stop plate 10 and the guide plate 4 are all vertically welded on the thick plate, reducing the overall weight of the lifting frame and increasing the lifting weight.

[0037] The working principle of the detachable lifting device for large annular structures in the utility model is as follows:

[0038] The first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3 are vertically welded on the first annular plate 6. Guide plates 4 are provided on both sides of the first hanging point plate 1, the second hanging point plate 2 and the third hanging point plate 3. The pins pass through the through holes and the lifting holes of the guide plates 4 in sequence. The crane lifts the lifting rings sleeved on the pins to realize lifting by the lifting device; bolts 5 are screwed on the first annular plate 6 and the second annular plate 7. The ends of the bolts 5 away from the second annular plate 7 are screwed with the screw holes of the structure to realize lifting of the structure. After the lifting is completed, the bolts 5 are removed to separate the lifting frame from the structure. When lifting again, the bolts 5 are used to connect the lifting frame to the large structure.

[0039] Based on the detachable lifting device of large annular structures, the utility model is connected to the structure through the bolts 5 connected on the first annular plate 6 and the second annular plate 7, so that after the lifting is completed, the bolts are removed and the overall structure connected by the first annular plate 6 and the second annular plate 7 is separated from the structure. When lifting again, the bolts 5 are used to connect the overall structure connected by the first annular plate 6 and the second annular plate 7 to the structure, thereby achieving the purpose of reusability without occupying operating space.

[0040] The first annular plate 6 is connected to the first lifting point plate 1, the second lifting point plate 2, the third lifting point plate 3, and the guide plate 4. A pin is connected to the guide plate 4 and the lifting point plate. A lifting ring mounted on the pin is connected to a crane to enable the structure to be lifted via the lifting frame. This device has a simple structure and high practicality, significantly reducing the workload of offshore structure lifting, avoiding hot work and flaw detection at sea, and reducing subsequent inspections and other work. This helps shorten offshore construction schedules, saves project costs, and offers high reliability.

[0041] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A detachable lifting device for a large annular structure, characterized in that: It includes a lifting frame and a lifting point plate, the lifting point plate is connected to the lifting frame, the lifting frame is connected to a guide plate, the guide plate and the lifting point plate are connected to pins, the lifting frame is provided with screw holes, bolts are screwed into the screw holes, and the end of the bolts away from the lifting frame is connected to the structure to lift the structure.

2. The detachable hoisting device for large-scale annular structures according to claim 1 is characterized in that: The hanging frame comprises a first annular plate, a second annular plate and a circular vertical plate. The circular vertical plate is vertically welded to the first annular plate, and one end of the circular vertical plate away from the first annular plate is vertically welded to the second annular plate.

3. The detachable hoisting device for large-scale annular structures according to claim 2 is characterized in that: The first annular plate and the second annular plate are both provided with screw holes, in which bolts are screwed, and one end of the bolt away from the second annular plate is connected to the structure.

4. The detachable hoisting device for large-scale annular structures according to claim 1 is characterized in that: The hanging point plate includes a first hanging point plate, a second hanging point plate and a third hanging point plate, which are all plugged into the first annular plate and welded to the first annular plate, the second annular plate and the circular vertical plate.

5. The detachable hoisting device for large-scale annular structures according to claim 4 is characterized in that: The first hanging point plate, the second hanging point plate and the third hanging point plate are all provided with hanging holes at one end away from the first annular plate, and cheek plates are welded on both sides of the hanging holes.

6. The detachable hoisting device for large-scale annular structures according to claim 5 is characterized in that: A plurality of stay plates are vertically welded on the first annular plate, and the plurality of stay plates are welded on both sides of the first hanging point plate, the second hanging point plate and the third hanging point plate.

7. The detachable hoisting device for large-scale annular structures according to claim 6 is characterized in that: A plurality of guide plates are vertically welded on the first annular plate, and the plurality of guide plates are welded on both sides of the first hanging point plate, the second hanging point plate and the third hanging point plate on a side away from the stop plate.

8. The detachable hoisting device for large-scale annular structures according to claim 7 is characterized in that: A through hole is opened on the guide plate, a pin is inserted in the through hole, the pin passes through the through hole and the lifting hole in sequence, the pin abuts against the stop plate, and the pin is connected to the crane to lift the structure.

9. The detachable hoisting device for large-scale annular structures according to claim 4, characterized in that: A reinforcing rib plate is welded on the circular vertical plate, one end of the reinforcing rib plate is welded to the first annular plate, and one end of the reinforcing rib plate away from the first annular plate is welded to the second annular plate.

10. The detachable hoisting device for large-scale annular structures according to claim 9, characterized in that: The first annular plate includes a thick plate and a thin plate, the thin plate and the thick plate are welded in sequence, and the first hanging point plate, the second hanging point plate and the third hanging point plate are all welded to the thick plate.

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