Welding-free quick assembly and disassembly type hanging cover device

Abstract

The utility model belongs to the technical field of equipment hoisting, and particularly relates to a welding-free quick assembly and disassembly type hoisting cover device, which comprises a main hoisting point system, a main hoisting point system, a main hoisting point system, a main hoisting point system, a main hoisting point system and an auxiliary hoisting point system, and is characterized in that the main hoisting point system comprises a main hoisting mechanical hook and a main hoisting steel wire rope, and two ends of the folded main hoisting steel wire rope are suspended on the main hoisting mechanical hook; the hanging cover assembly system comprises a lifting hanging cover, main lifting lugs, a pin shaft and auxiliary lifting lugs, the lifting hanging cover is used for being connected with a flange pipe opening in the top of an equipment body, the main lifting lugs are fixedly arranged on the two sides of the upper surface of the lifting hanging cover, the pin shaft is installed between the two main lifting lugs, the pin shaft is sleeved with a main lifting steel wire rope when the main lifting steel wire rope is folded, and the auxiliary lifting lugs are connected with the main lifting steel wire rope. The auxiliary lifting lugs are arranged on the outer side face of the lifting hanging cover. The integral platform is welded on the lifting hanging cover, and then the lifting hanging cover is connected with the equipment body through the double-end stud, so that the lifting device can be better suitable for convenient mounting and dismounting hoisting operation on the pressure vessel equipment which is provided with a large connecting pipe flange in the center of the top, has no lifting lug and is heavy in weight.

Description

Technical Field

[0001] This utility model relates to the field of equipment hoisting technology; specifically, this utility model relates to a welding-free, quick-installation and disassembly hoisting cover device. Background Technology

[0002] In equipment hoisting projects in petrochemical and coal chemical industries, some pressure vessels were not designed with lifting lugs before leaving the factory. They were welded and fabricated at the factory and then subjected to overall heat treatment before being transported to the project site. According to relevant pressure vessel standards, lifting lugs should be welded onto the equipment before it leaves the factory, and the equipment should undergo overall heat treatment together with the lugs. After the equipment arrives at the site, it is not permitted to directly weld lifting lugs or other load-bearing components onto the pressure vessel to prevent stress concentration at the welded lug locations. This could lower the pressure rating of the pressure vessel, preventing it from meeting the required operating pressure and creating significant safety hazards.

[0003] Currently, there are two methods for hoisting such equipment: one is to use steel wire ropes for binding, but this can cause damage to the surface of the equipment, potentially leading to deformation, and also poses significant safety hazards. The other method uses a lifting cover, which offers better safety and reliability. However, this method only addresses the lack of lifting lugs and does not consider the convenience and safety of installation and dismantling. Since this type of large equipment is among the first to be installed in the early stages of a project, the lack of an operating platform or the incomplete installation of the platform within the steel structure frame means that installation personnel lack an operating platform, resulting in certain risks and inconveniences during operations. Utility Model Content

[0004] In view of this, the present invention provides a welding-free, quick-installation and disassembly lifting cover device. The device consists of an integral platform welded onto the lifting cover, which is then connected to the equipment body via double-ended studs. This device can be used for lifting equipment, particularly heavy pressure vessel equipment without lifting lugs, which has a large connecting flange at the top center. It provides a convenient, safe, and reusable device for lifting similar equipment, thereby solving or at least alleviating the aforementioned problems in the prior art.

[0005] To achieve the aforementioned objectives, this utility model provides a weld-free, quick-installation and disassembly lifting cover device, comprising:

[0006] The main lifting point system includes a main lifting mechanical hook and a main lifting wire rope, wherein the two ends of the main lifting wire rope after being folded in half are suspended on the main lifting mechanical hook;

[0007] The lifting cover assembly system includes a lifting cover, main lifting lugs 3, pins, and auxiliary lifting lugs. The lifting cover is used to connect to the flange port on the top of the equipment body. The main lifting lugs 3 are fixedly installed on both sides of the upper surface of the lifting cover. The pins are installed between the two main lifting lugs 3. When the main lifting wire rope is folded in half, it is sleeved on the pins. The auxiliary lifting lugs are located on the outer side of the lifting cover.

[0008] In the aforementioned welding-free quick-installation and disassembly lifting cover device, optionally, the lifting cover has a ring of stud holes corresponding to the through holes on the flange pipe opening, and the double-ended studs of the lifting cover are detachably connected to the flange pipe opening.

[0009] In the aforementioned weld-free quick-installation and disassembly lifting cover device, the lifting cover assembly system may optionally include a platform support and an operating platform, wherein the platform support is fixedly mounted on the lifting cover and the operating platform is fixedly mounted on the platform support.

[0010] In the aforementioned weld-free quick-installation and disassembly cover device, the operating platform may optionally be equipped with a platform fence opening and closing door.

[0011] In the aforementioned weld-free quick-installation and disassembly cover device, optionally, the operating platform has a through hole at its center for the flange pipe to pass through.

[0012] In the aforementioned weld-free quick-installation and disassembly lifting cover device, optionally, the platform support is in an inclined state, the top end of the platform support is fixedly connected to the side of the lifting cover, and the bottom end of the platform support is fixedly connected to the operating platform.

[0013] This utility model discloses a weld-free, quick-installation and disassembly lifting cover device. It employs a lifting cover assembly system that is convenient, safe, and reusable for lifting similar equipment. This system safely and efficiently meets usage requirements, avoiding the difficulties of on-site welding due to thin walls or pressure vessel limitations. It also reduces the risk of equipment deformation and damage caused by improper welding or other handling. Combined with the simple manufacturing process and quick, convenient installation and disassembly of the lifting cover assembly system, it reduces rigging manufacturing costs and ensures safety and construction efficiency during equipment lifting. Attached Figure Description

[0014] The disclosure of this utility model will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0015] Figure 1 This is a schematic diagram of the device body.

[0016] Figure 2 A schematic diagram of the lifting cover structure.

[0017] Figure 3 This is a schematic diagram of the lifting cover assembly system.

[0018] Figure 4 The three-view diagram shows the structure of the lifting cover assembly system.

[0019] Figure 5 This is a schematic diagram of the installation of the cover assembly system and the equipment body.

[0020] Figure 6 A is a schematic diagram of the rigging connection for the main lifting point system. Figure 6 B is Figure 6 A. Side view.

[0021] Figure 7 This is a schematic diagram showing the equipment being hoisted to a vertical position.

[0022] Figure 8 A schematic diagram showing the main lifting point system and lifting cover assembly after dismantling.

[0023] Attached reference numerals: 1-Equipment body, 2-Flange port, 3-Main lifting lug, 4-Pin shaft, 5-Stud hole, 6-Auxiliary lifting lug, 7-Lifting cover, 8-Operating platform, 9-Platform support component, 10-Platform fence opening and closing door, 11-Lifting cover assembly system, 12-Double-headed stud, 13-Main lifting wire rope, 14-Main lifting mechanical hook; Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] like Figures 1 to 8 As shown, a typical embodiment of the present invention provides a welding-free quick-installation and disassembly lifting cover device, including a main lifting point system, which includes a main lifting mechanical hook 14 and a main lifting wire rope 13, wherein the two ends of the main lifting wire rope 13 after being folded in half are suspended on the main lifting mechanical hook 14;

[0026] The lifting cover assembly system 11 includes a lifting cover 7, main lifting lugs 3, pins 4, and auxiliary lifting lugs. The lifting cover 7 is used to connect to the flange port 2 at the top of the equipment body. The main lifting lugs 3 are fixedly installed on both sides of the upper surface of the lifting cover 7. The pins 4 are installed between the two main lifting lugs 3. When the main lifting wire rope 13 is folded in half, it is sleeved on the pins 4. The auxiliary lifting lugs are located on the outer side of the lifting cover 7.

[0027] The main lifting point system connection method is as follows: The main lifting machinery stands at the planned lifting position, the main lifting machinery hook 14 is lowered to the ground, a pair of main lifting wire ropes 13 are folded in half, one end of each rope is connected to the main lifting machinery hook 14, and the other end is bent in the middle and connected to the lifting cover assembly system 11 via a pin 4; after the main lifting point system connection is completed, see... Figure 6 A, 6B. The tail-end lifting point is not a key point of this embodiment and will not be described in detail.

[0028] The lifting cover assembly system 11 also includes a platform support 9 and an operating platform 8. The platform support 9 is fixedly mounted on the lifting cover 7, and the operating platform 8 is fixedly mounted on the platform support 9. The operating platform 8 is equipped with a platform fence opening and closing door 10.

[0029] In a relatively specific embodiment, the operating platform 8 has a through hole at its center for the flange port 2 to pass through, the platform support 9 is in an inclined state, the top end of the platform support 9 is fixedly connected to the side of the lifting cover 7, and the bottom end of the platform support 9 is fixedly connected to the operating platform 8.

[0030] Based on the analysis of the equipment's structural characteristics, the equipment structure diagram is shown below. Figure 1 Based on the structural forms and selection rules of the lifting cover design specifications, a general lifting cover 7 for this project was designed. The structural diagram is shown below. Figure 2 The operating platform 8 is welded onto the lifting cover 7 via platform support component 9, and the design has been improved to form a lifting cover assembly system 11. The structural form is shown in [reference needed]. Figure 3 , 4 With the main body 1 in a horizontal lifting position, the auxiliary crane uses the auxiliary lifting lugs 6 to lift the lifting cover assembly system 11. It then connects to the lifting cover 7 via the flange port 2 on the top of the equipment, thus connecting the equipment to the lifting cover assembly system 11. The installed configuration is shown in the image below. Figure 5 .

[0031] After the lifting cover assembly system 11 and the main lifting point system are installed and ready, the equipment is lifted from horizontal to vertical. The tail crane is removed, and then the main crane lifts the equipment to the position directly above the frame equipment. After the hook is lowered, the equipment is installed in place. The installation personnel quickly remove the connecting bolts in the system operation platform 8 of the lifting cover assembly system 11, and detach the lifting cover assembly from the equipment body 1 to prepare for the lifting of the next piece of equipment.

[0032] During the formal hoisting process, the main crane lifts the equipment, while the tail crane delivers it, gradually transitioning the equipment from a horizontal to a vertical position. Once the equipment is in a vertical position, the tail crane detaches its hook, the main crane rotates, and the equipment is placed across the frame onto the foundation. (See image for the upright position.) Figure 7After alignment and securing, the installation is complete. The installer enters the lifting cover assembly system 11, closes the platform railing door 10, and removes the double-headed studs 12, separating the equipment from the lifting cover assembly system 11 and the main lifting point system. See the image for the post-removal status. Figure 8 Then continue with the hoisting of subsequent equipment.

[0033] The lifting cover 7 has a ring of stud holes 5 corresponding to the through holes on the flange port 2, and the lifting cover 7 is detachably connected to the flange port 2 via double-ended studs 12. By passing one end of the double-ended stud 12 through the stud hole 5 and the other end through the through hole on the flange port 2, and then tightening the nut, the equipment body 1 is connected to the lifting cover assembly system 11 through the flange port 2.

[0034] The lack of designed lifting lugs prevents the equipment from being promptly hoisted into place upon arrival at the site. According to relevant pressure vessel standards, lifting lugs should be welded onto the equipment before leaving the factory and subjected to overall heat treatment. Welding lifting lugs or other load-bearing components directly onto the pressure vessel after arrival at the site is prohibited to prevent stress concentration at the welded lug locations, which could lower the pressure rating of the pressure vessel and prevent it from meeting the required operating pressure, posing a significant safety hazard. Current technology only addresses this issue with a lifting cover (7), solving the problem of hoisting equipment without lifting lugs. However, it fails to consider the convenience and safety risks during installation and dismantling. Since this type of large equipment is among the first to be installed in the early stages of a project, the lack of an operating platform (8) or the incomplete installation of the platform within the steel structure frame means that installation personnel lack an operating platform (8), posing certain risks and inconveniences during operation.

[0035] This embodiment provides a welding-free, quick-installation and disassembly lifting cover device, which offers a convenient, safe, and reusable lifting device for similar equipment such as pressure vessels without lifting lugs that have a large central flange at the top and are heavy. The device involves lifting the lifting cover 7 onto a welded platform, then using bolts to install the improved lifting cover assembly system 11 onto the equipment body 1. After lifting, the device allows for safe and convenient disassembly and reuse on the next piece of equipment.

[0036] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A welding-free, quick-installation and disassembly lifting cover device, characterized in that, include: The main lifting point system includes a main lifting mechanical hook and a main lifting wire rope, wherein the two ends of the main lifting wire rope after being folded in half are suspended on the main lifting mechanical hook; The lifting cover assembly system includes a lifting cover, main lifting lugs, a pin, and auxiliary lifting lugs. The lifting cover is used to connect to the flange port on the top of the equipment body. The main lifting lugs are fixedly installed on both sides of the upper surface of the lifting cover. The pin is installed between the two main lifting lugs. When the main lifting wire rope is folded in half, it is sleeved on the pin. The auxiliary lifting lugs are located on the outer side of the lifting cover.

2. The welding-free, quick-installation and disassembly lifting cover device according to claim 1, characterized in that, The lifting cover has a ring of stud holes corresponding to the through holes on the flange pipe opening, and the double-ended studs on the lifting cover are detachably connected to the flange pipe opening.

3. A welding-free, quick-installation and disassembly lifting cover device according to claim 1 or 2, characterized in that, The lifting cover assembly system also includes a platform support and an operating platform. The platform support is fixedly mounted on the lifting cover, and the operating platform is fixedly mounted on the platform support.

4. The welding-free, quick-installation and disassembly lifting cover device according to claim 3, characterized in that, The operating platform is equipped with a platform fence and a gate.

5. The welding-free, quick-installation and disassembly lifting cover device according to claim 4, characterized in that, The operating platform has a through hole at its center for the flange pipe to pass through.

6. The welding-free, quick-installation and disassembly lifting cover device according to claim 5, characterized in that, The platform support is tilted, with its top end fixed to the side of the lifting cover and its bottom end fixed to the operating platform.

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