Hoisting device and hoisting method for strip-shaped assembly of large cover plate

Abstract

The invention provides a lifting device and method for a large cover plate strip-shaped assembly, and belongs to the technical field of lifting, the lifting device comprises a lifting device body, a check block, a lifting rope and a shackle, the lifting device body is clamped with the interior of a lifting hole, the check block is inserted into the lifting hole, and the lifting rope is connected with the lifting device body through the shackle; the lifting appliance body comprises a cylinder and a lifting lug arranged at the top of the cylinder, and the shackle is mounted outside the lifting lug; a clamping groove with a crescent-shaped cross section is formed in one side of the middle of the cylinder, and the check block is used for enabling the edge of the lifting hole to be clamped into the clamping groove after the check block is attached to the cylinder. The special lifting device has the advantages that the early-stage preparation work is time-saving and labor-saving, the later-stage recovery work is not needed, the purpose of safe and reliable lifting is completely achieved, meanwhile, the requirements that the special lifting device is relatively small in appearance size, simple in structure and convenient to operate are met, and safe and reliable lifting of the large cover plate strip-shaped assembly is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting, and in particular relates to a lifting device and a lifting method for a large-scale cover plate strip assembly. Background Art

[0002] The large cover is welded from 16 strip components, 24 meters long, 9 meters wide, 0.9 meters high, and weighs 480 tons. The strip components are box-type structural parts welded from the bottom plate, vertical plate, and top plate. Figure 1 As shown. A single large cover strip component is 9 meters long, 1.5 meters wide, 0.9 meters high, and weighs 30 tons. Both sides of the bottom plate and the top plate are welded grooves, with a straight edge of only 2mm. The top plate has two circular holes in the center along the length direction. 16 strip components are placed side by side along the width direction and finally welded together to form a large cover.

[0003] There are usually two lifting methods for this kind of large cover strip assembly with large dimensions and heavy weight. The commonly used lifting method is lifting with a lifting rope. The main load-bearing point during lifting is concentrated at the contact point between the lifting rope and the edge of the welded part. On the one hand, the edges of the workpiece are relatively sharp, and the straight edge is only 2mm. This lifting method is easy to cause the lifting rope to be cut, resulting in a lifting safety accident; on the other hand, after the workpiece is lifted into place, it needs to be placed side by side with other parts, with no gap in the middle, and the lifting rope cannot be pulled out, so this lifting scheme is not feasible. The second lifting method is to directly weld the lifting lugs on the top plate of the workpiece or to make threaded holes to connect the lifting lugs; if welding the lifting lugs, it is necessary to first weld the lifting lugs on the workpiece, and then cut off the lifting lugs after use, and grind off the welds; if threaded holes are used to connect the lifting lugs, it is necessary to first make threaded holes on the workpiece, install the lifting lugs, remove the lifting lugs after use, and then plug the threaded holes with welding. The second lifting scheme will cause a lot of extra work.

[0004] Therefore, a new lifting method needs to be found for such large cover strip components with large dimensions and heavy weight. The preliminary preparation work should be time-saving and labor-saving, and no recovery work should be done in the later stage as much as possible. At the same time, a lifting device with relatively small dimensions, simple structure, and convenient and quick installation and disassembly that is suitable for this method should be designed to achieve safe and reliable lifting of large cover strip components. Summary of the invention

[0005] The technical problem to be solved by the present invention is to save time and effort in the early preparation work, and to avoid doing recovery and follow-up work in the later stage as much as possible. In view of the shortcomings of the prior art, a lifting device and a lifting method for a large cover strip assembly with relatively small dimensions, simple structure, and convenient and quick installation and disassembly are provided.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a lifting piece for lifting, wherein a lifting hole is arranged on the top of the lifting piece, and the lifting piece comprises a lifting body, a stopper, a lifting rope and a shackle, wherein the lifting body is clamped with the inside of the lifting hole, the stopper is inserted into the inside of the lifting hole, and the lifting rope is connected with the lifting body by the shackle; The lifting body comprises a cylinder and a lifting ear arranged on the top of the cylinder, and the shackle is installed on the outside of the lifting ear; a slot with a crescent-shaped cross-section is arranged on one side of the middle part of the cylinder, and the stop block is used to fit the cylinder so that the edge of the lifting hole is stuck in the slot.

[0007] Furthermore, a plane is provided on the side of the cylinder opposite to the slot, one side surface of the stopper is an arc surface, and the other side surface is a plane; the diameter of the inner arc surface of the slot is the same as the diameter of the arc surface of the stopper; after the stopper is fitted with the cylinder through the plane, the inner arc surface of the slot is coaxial with the arc surface of the stopper.

[0008] Furthermore, an anti-dropout block is fixedly connected to the top of the stopper, and a handle is provided on the top of the anti-dropout block.

[0009] Furthermore, the diameter of the cylinder is slightly smaller than the diameter of the lifting hole, and the diameter of the inner arc surface of the slot and the diameter of the arc surface of the stopper are both the same as the diameter of the lifting hole.

[0010] Furthermore, the hanging member includes a bottom plate, a vertical plate arranged on the top of the bottom plate, and a top plate arranged on the top of the vertical plate, and the lifting hole passes through the top plate.

[0011] Furthermore, mounting holes are provided at both ends of the shackle, one group of the mounting holes is provided with threads, bolts are installed inside the mounting holes, a through groove is provided on one side of the lifting ear, the bolt is plugged into the inside of the through groove, and the shackle and the lifting ear are installed by screwing the bolt into the inside of the mounting hole.

[0012] A method for lifting a large cover strip assembly is implemented based on the lifting device for the large cover strip assembly as claimed in claim 1, characterized in that: Insert the lifting body into the lifting hole; Move the crane specifically to displace the axis of the cylinder from the center of the lifting hole; Insert the block into the lifting hole to fix the lifting body; Install the shackle on one end of the lifting rope and install the shackle on the lifting lug; Lift the workpiece to the designated location; Take out the stopper from the lifting hole, then move the lifting body so that the axis of the cylinder coincides with the center of the lifting hole, and take the lifting body out of the lifting hole to separate it from the workpiece.

[0013] Further, the shackle is installed on one end of the lifting rope, and the method of installing the shackle on the lifting ear includes: Connect the shackle to the ring at one end of the lifting rope, clamp the shackle on both sides of the upper lifting ears of the lifting body, insert the bolts, and install the shackle on the lifting body.

[0014] Furthermore, the method for moving the crane to displace the axis of the cylinder and the center of the lifting hole includes: Insert the lifting body into the lifting hole, and move the lifting body so that the edge of the lifting hole fits into the slot.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The preparatory work of the device is time-saving and labor-saving, and no recovery work is required in the later stage, which fully realizes the purpose of safe and reliable lifting. At the same time, it also meets the requirements of relatively small size, simple structure and convenient operation of its special lifting device, and realizes the safe and reliable lifting of large cover strip components. This technology has been applied in the processing and manufacturing of large cover strip components, providing a better method for the lifting of large-sized and heavy parts, and has wide application and promotion value.

[0016] 2. During the installation and removal of the crane, effectively controlling its movement space is the key to improving safety and efficiency, ensuring that the crane can move within the predetermined path and range during the lifting operation, thereby avoiding invalid movements and potential safety risks. Inserting blocks to limit the movement space of the crane simplifies the operation process and speeds up the operation. In addition, this method also reduces the dependence on the operator's skills, allowing workers of different skill levels to quickly and skillfully perform the loading and unloading of the crane, improving overall operation efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0018] Figure 1 : A schematic diagram of the three-dimensional structure of Example 1 of the present invention; Figure 2 : A schematic diagram of the structure of the hanging body and the hanging parts in the embodiment 1 of the present invention; Figure 3 : A schematic diagram of the structure of the shackle and the lifting body in the embodiment 1 of the present invention; Figure 4 : A schematic diagram of the structure of the block and the hanging body in the embodiment 2 of the present invention; Figure 5 : A schematic structural diagram of a perspective cross-section of the stopper and the hanging body in Example 2 of the present invention.

[0019] Among them, 10, hanging parts; 11, lifting holes; 12, bottom plate; 13, vertical plate; 14, top plate; 20, lifting body; 21, cylinder; 22, lifting ears; 23, slots; 30, blocks; 31, anti-drop blocks; 32, handles; 40, lifting ropes; 50, shackles; 51, mounting holes; 52, bolts; 53, through slots. DETAILED DESCRIPTION

[0020] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments and the accompanying drawings, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0021] Example 1: See Figure 1-5 A lifting device for a large cover strip assembly of this embodiment is used to lift a lifting member 10, which includes a lifting body 20, a stopper 30, a lifting rope 40 and a shackle 50. A lifting hole 11 is provided on the top of the lifting member 10, the lifting body 20 is clamped with the inside of the lifting hole 11, the stopper 30 is inserted into the inside of the lifting hole 11, and the lifting rope 40 is connected to the lifting body 20 by the shackle 50; The lifting body 20 includes a cylinder 21 and a lifting ear 22 arranged on the top of the cylinder 21, and the shackle 50 is installed on the outside of the lifting ear 22; a slot 23 with a crescent-shaped cross-section is provided on one side of the middle of the cylinder 21, and the block 30 is used to fit with the cylinder 21 so that the edge of the lifting hole 11 is inserted into the slot 23. The lifting body 20 is inserted into the lifting hole 11, and the lifting body 20 is pushed so that the slot 23 of the cylinder 21 is stuck to the edge of the lifting hole 10, and the inner wall of the slot 23 is close to the inner wall of the lifting hole 11; then the block 30 is inserted into the lifting hole 11 to fix the lifting body 20.

[0022] See also Figure 3-4 A plane is milled on the side of the cylinder 21 opposite to the slot 23, and a plane is milled on the stopper 30 from top to bottom. One side surface of the stopper 30 is an arc surface, and the other side surface is a plane; the diameter of the inner arc surface of the slot is the same as the diameter of the arc surface of the stopper 30; after the stopper 30 is fitted with the cylinder 21 through the plane, the inner arc surface of the slot 21 is coaxial with the arc surface of the stopper 30.

[0023] See also Figure 1-4The top of the stopper 30 is fixedly connected with an anti-dropping block 31, and a handle 32 is provided on the top of the anti-dropping block 31. After the plane of the side surface of the stopper 30 is fitted with the plane of the side surface of the cylinder 21, the part of the cylinder 21 opposite to the slot is combined with the stopper 30 to form a cylinder with the same diameter as the lifting hole. The diameter of the anti-dropping block 31 is larger than the diameter of the lifting hole 11. When in use, the lower plane of the anti-dropping block 31 is fitted with the upper plane of the lifting hole 11 to prevent the stopper 30 from falling into the hole after being placed in the lifting hole 11.

[0024] See also Figure 1 , Figure 2 and Figure 5 The diameter of the cylinder 21 is slightly smaller than the diameter of the lifting hole 11, and the diameter of the inner arc surface of the slot 23 and the diameter of the arc surface of the stopper 30 are the same as the diameter of the lifting hole 11; the arc surface of the stopper 30 fits with the inner surface of the lifting hole 11, and the inner arc surface of the slot 23 fits with the inner surface of the lifting hole 11. The stopper 30 fits with the cylinder 21 through a plane, so that the cylinder 21 cannot move in the lifting hole 11.

[0025] See also Figure 1-2 The hanging member 10 includes a bottom plate 12 , a vertical plate 13 disposed on the top of the bottom plate 12 , and a top plate 14 disposed on the top of the vertical plate 13 , and the lifting hole 11 passes through the top plate 14 .

[0026] See also Figure 3-4 , both ends of the shackle 50 are provided with mounting holes 51, the shape of the shackle 50 is U-shaped, and both ends of the shackle 50 are integrally formed with protrusions, and the mounting holes 51 are arranged on the protrusions at both ends of the shackle 50, one group of the mounting holes 51 is provided with threads, and bolts 52 are installed inside the mounting holes 51, and a through groove 53 is provided on one side of the lifting ear 22, and the bolt 52 is plugged into the inside of the through groove 53. The shackle 50 and the lifting ear 22 are installed by screwing the bolt 52 into the inside of the mounting hole 51. When connecting the wire rope 40 to the lifting body 20, first, the shackle 50 is connected to one end of the wire rope 40 by a ring sleeve, and the shackle 50 is moved so that the two ends of the shackle 50 are sleeved on the outside of the lifting ear 22, and the mounting hole 51 is aligned with the through groove 53, and the bolt 52 is inserted into the mounting hole 51 and the through groove 53. The bolt 52 is screwed into the mounting hole 51 with threads to complete the fixation.

[0027] Beneficial effects: insert the lifting body 20 into the lifting hole 11, push the lifting body 20 so that the slot 23 of the cylinder 21 is stuck on the edge of the lifting hole 10, and make the inner wall of the slot 23 close to the inner wall of the lifting hole 11. According to the above-mentioned large cover strip component lifting device, the preliminary preparation work saves time and effort, and no recovery work is required in the later stage, which fully realizes the purpose of safe and reliable lifting. At the same time, it also meets the requirements of relatively small size, simple structure and convenient operation of its special lifting device, and realizes the safe and reliable lifting of large cover strip components. This technology has been applied in the processing and manufacturing of large cover strip components, providing a better method for lifting large-sized and heavy parts, and has wide application and promotion value.

[0028] Embodiment 2: A method for lifting a large cover strip assembly, based on the lifting device of the large cover strip assembly of Embodiment 1: Insert the lifting body into the lifting hole; Move the lifting body to make the axis of the cylinder misalign with the center of the lifting hole, push the lifting body to make the cylindrical clamping groove close to the inner wall of the lifting hole of the workpiece, and the clamping groove will be clamped on the top plate on one side of the lifting hole of the workpiece; Insert the block into the lifting hole to fix the lifting body; Install the shackle on one end of the lifting rope and install the shackle on the lifting lug; Lift the workpiece to the designated location; Take out the stopper from the lifting hole, then move the lifting body so that the axis of the cylinder coincides with the center of the lifting hole, and take the lifting body out of the lifting hole to separate it from the workpiece.

[0029] The method of installing the shackle on one end of the lifting rope and the lifting lug includes: connecting the shackle with the ring sleeve at one end of the lifting rope, clamping the shackle on both sides of the lifting lug on the upper part of the lifting body, inserting bolts, and installing the shackle on the lifting body.

[0030] The method of moving the lifting body to make the cylindrical axis and the lifting hole center misaligned includes: inserting the lifting body into the lifting hole, and moving the lifting body to make the edge of the lifting hole snap into the snap groove.

[0031] Beneficial effects: During the installation and removal of the crane body, effectively controlling its movement space is the key to improving safety and efficiency, ensuring that the crane body can move within the predetermined path and range during the lifting operation, thereby avoiding invalid movements and potential safety risks. Inserting blocks to limit the movement space of the crane body simplifies the operation process and speeds up the operation. In addition, this method also reduces the dependence on the operator's skills, allowing workers of different skill levels to quickly and skillfully perform the loading and unloading of the crane body, improving overall operation efficiency and safety.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A lifting device for a large cover strip assembly, used for lifting a lifting piece (10), wherein a lifting hole (11) is provided on the top of the lifting piece (10), characterized in that: The lifting body (20) comprises a lifting body (20), a stopper (30), a lifting rope (40) and a shackle (50); the lifting body (20) is clamped with the inside of a lifting hole (11); the stopper (30) is inserted into the inside of the lifting hole (11); and the lifting rope (40) is connected to the lifting body (20) by means of the shackle (50); The lifting body (20) comprises a cylinder (21) and a lifting ear (22) arranged on the top of the cylinder (21), and the shackle (50) is installed on the outside of the lifting ear (22); a slot (23) with a crescent-shaped cross-section is provided on one side of the middle of the cylinder (21), and the stopper (30) is used to fit the cylinder (21) so that the edge of the lifting hole (11) is inserted into the slot (23).

2. The lifting device for a large cover strip assembly according to claim 1, characterized in that: A plane is provided on one side of the cylinder (21) opposite to the slot (23); one side surface of the stopper (30) is an arc surface, and the other side surface is a plane; the diameter of the inner arc surface of the slot (23) is the same as the diameter of the arc surface of the stopper (30); after the stopper (30) is fitted with the cylinder (21) via the plane, the inner arc surface of the slot (23) is coaxial with the arc surface of the stopper (30).

3. The lifting device for a large cover strip assembly according to claim 1, characterized in that: The top of the stopper (30) is fixedly connected to an anti-dropping block (31), and the top of the anti-dropping block (31) is provided with a handle (32).

4. The lifting device for a large cover strip assembly according to claim 1, characterized in that: The diameter of the cylinder (21) is slightly smaller than the diameter of the lifting hole (11), and the diameter of the inner arc surface of the slot (23) and the diameter of the arc surface of the stopper (30) are both the same as the diameter of the lifting hole (11).

5. The lifting device for a large cover strip assembly according to claim 1, characterized in that: The hanging member (10) comprises a bottom plate (12), a vertical plate (13) arranged on the top of the bottom plate (12), and a top plate (14) arranged on the top of the vertical plate (13), and the lifting hole (11) passes through the top plate (14).

6. The lifting device for a large cover strip assembly according to claim 1, characterized in that: Both ends of the shackle (50) are provided with mounting holes (51), one group of which is provided with threads, bolts (52) are installed inside the mounting holes (51), one side of the lifting ear (22) is provided with a through slot (53), the bolt (52) is plugged into the inside of the through slot (53), and the shackle (50) and the lifting ear (22) are installed by screwing the bolt (52) into the inside of the mounting hole (51).

7. A method for lifting a large cover strip assembly, implemented based on the lifting device for the large cover strip assembly according to claim 1, characterized in that: Insert the lifting body into the lifting hole; Move the crane specifically to displace the axis of the cylinder from the center of the lifting hole; Insert the block into the lifting hole to fix the lifting body; Install the shackle on one end of the lifting rope and install the shackle on the lifting lug; Lift the workpiece to the designated location; Take out the stopper from the lifting hole, then move the lifting body so that the axis of the cylinder coincides with the center of the lifting hole, and take the lifting body out of the lifting hole to separate it from the workpiece.

8. The method for lifting a large cover strip assembly according to claim 7, characterized in that: The method of installing the shackle to one end of the lifting rope and the shackle to the lifting lug includes: Connect the shackle to the ring at one end of the lifting rope, clamp the shackle on both sides of the upper lifting ears of the lifting body, insert the bolts, and install the shackle on the lifting body.

9. The method for lifting a large cover strip assembly according to claim 7, characterized in that: The specific methods for mobile crane to misalign the cylindrical axis with the center of the lifting hole include: Insert the lifting body into the lifting hole, and move the lifting body so that the edge of the lifting hole fits into the slot.

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