CN215946465U

CN215946465U - Lifting lug structure for hoisting loop reactor

Info

Publication number: CN215946465U
Application number: CN202121630219.1U
Authority: CN
Inventors: 赵宏飞; 赵亮; 陈方华; 董志斌
Original assignee: Sinopec Engineering Group Co Ltd; Sinopec Heavy Lifting Transporting Engineering Co Ltd
Current assignee: Sinopec Engineering Group Co Ltd; Sinopec Heavy Lifting Transporting Engineering Co Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-03-04
Anticipated expiration: 2031-07-16

Abstract

The utility model belongs to the technical field of hoisting lugs, and discloses a lug structure for hoisting a loop reactor, which is arranged at two ends of a cross beam at the uppermost part of the loop reactor; each lifting lug structure comprises a pipe shaft sleeved at the end part of the uppermost cross beam; the outer side and the inner side of the tubular shaft are respectively welded with an outer retainer ring and an inner retainer ring; transverse reinforcing ribs are welded among the outer retainer ring, the inner retainer ring and wing plates of the uppermost cross beam respectively; the section of the uppermost cross beam in the pipe shaft is provided with a first rib plate, and the section of the uppermost cross beam between the pipe shaft and the cylinder of the loop reactor is provided with a second rib plate. The lifting lug is integrally designed at two ends of the uppermost cross beam of the loop reactor, the specification of the lifting lug is not limited to the diameter of the barrel of the loop reactor, larger energy level can be selected, the requirement on the strength of the lifting lug is met, simultaneously the lifting lug is convenient to unhook, and the lifting efficiency is greatly improved.

Description

Lifting lug structure for hoisting loop reactor

Technical Field

The utility model belongs to the technical field of hoisting lugs, and particularly relates to a lug structure for hoisting a loop reactor.

Background

The loop reactor is the core equipment of a polypropylene device, is thin-walled and slender equipment, and has high installation height and high hoisting difficulty. The cylinder body of the loop reactor mainly comprises two straight pipes and a large bent pipe, wherein the two straight pipes are arranged in parallel, and the large bent pipe connects the end parts of the two straight pipes on the same side; a plurality of cross beams are connected between the two straight pipes and arranged at intervals and are parallel to each other.

In the prior construction, plate type lifting lugs or tube shaft type lifting lugs are mostly welded on a cross beam or a device cylinder body for designing lifting lugs of a loop reactor. The traditional plate-type lifting lug needs to be manually unhooked when being welded on the cross beam, the lifting period is long, and the efficiency is poor; and a hanging basket or a scaffold needs to be erected, so that the risk is high; meanwhile, the torque caused by the vertical radial force to the equipment barrel when the traditional plate-type lifting lug is lifted is very large, and the local stress concentration of the equipment barrel is easily caused. The traditional pipe shaft type lifting lug is welded on the equipment barrel, a beam on the upper part of the pipe shaft type lifting lug needs to be detached during hoisting so as to avoid collision of a steel wire rope with the lifting lug, and the lifting lug needs to be cut after the lifting lug is in place, so that stress concentration is avoided, and the workload is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the difficult problem of hoisting of the loop reactor, and provides the lifting lug structure for hoisting the loop reactor.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

a lifting lug structure for hoisting a loop reactor is arranged at two ends of a beam at the uppermost part of the loop reactor; the uppermost cross beam is of an H-shaped steel structure and comprises a web plate and two wing plates;

each shackle structure includes a tubular shaft fitted over an end of the uppermost beam; the tubular shaft is welded with the edges of the two wing plates of the uppermost cross beam; the outer side and the inner side of the tubular shaft are respectively welded with an outer retainer ring and an inner retainer ring;

transverse reinforcing ribs are welded between the outer retainer ring and the wing plates of the uppermost cross beam, and the inner retainer ring and the wing plates of the uppermost cross beam are respectively welded with the transverse reinforcing ribs;

the section of the uppermost cross beam in the pipe shaft is provided with two first rib plates, the two first rib plates are symmetrically arranged on two sides of a web plate of the uppermost cross beam, each first rib plate is perpendicular to the web plate and a wing plate of the uppermost cross beam at the same time, and the first rib plates are welded with the web plate and the wing plate of the uppermost cross beam;

a section of the uppermost beam between the tubular shaft and the barrel of the loop reactor is provided with a plurality of second rib plates, and each second rib plate is perpendicular to a web plate of the uppermost beam and parallel to a wing plate of the uppermost beam; the second rib plates are symmetrically arranged on two sides of the web plate of the uppermost cross beam and are welded with the web plate of the uppermost cross beam.

Further, the height of the outer retainer ring and the inner retainer ring exceeding the pipe shaft is 2/3 of the diameter of the steel wire rope during hoisting.

Further, the transverse reinforcing ribs between the outer retainer ring or the inner retainer ring and the same wing plate are symmetrical relative to the web.

Further, the first rib plate is located in the middle of the pipe shaft.

Further, a plurality of second rib plates on each side of the web plate of the uppermost cross beam are uniformly distributed between the two wing plates of the uppermost cross beam

The utility model has the beneficial effects that:

the lifting lug structure for hoisting the loop reactor is connected with the steel wire rope through the tubular shaft, manual unhooking is not needed, automatic unhooking can be achieved, safety and reliability are achieved, and risks are minimized.

And secondly, the torque caused by the lifting lug structure for lifting the loop reactor is small, only the torque caused by the friction radial force between the steel wire rope and the tubular shaft is generated, and the friction force can be further reduced by measures such as lubrication and the like during lifting, so that the torque caused by the friction force is small, and the destructiveness on an equipment barrel is very limited.

And thirdly, the lifting lug structure for hoisting the loop reactor is welded at two ends of the cross beam at the uppermost part of the loop reactor, the cross beam does not need to be disassembled, and compared with the traditional tube shaft type lifting lug structure in which the cross beams at the upper part need to be disassembled to avoid collision with a steel wire rope, the secondary workload is reduced.

And fourthly, the lifting lug structure for hoisting the loop reactor is welded at the two ends of the uppermost cross beam of the loop reactor, so that no stress is concentrated on the equipment barrel, and the lifting lugs do not need to be cut off after the equipment barrel is arranged in place, thereby reducing the workload.

In conclusion, the lifting lug structure for lifting the loop reactor can greatly shorten the lifting period, save the machine-class cost of a large-scale crane, reduce the labor and mechanical cost and have obvious economic benefit.

Drawings

FIG. 1 is a diagram of the installation position of a lifting lug structure for lifting a loop reactor, which is provided by the utility model, on the loop reactor;

FIG. 2 is a detailed structural view of a lifting lug structure for lifting a loop reactor provided by the present invention;

fig. 3 is an end view of fig. 2.

In the above figures: 1-lifting lug structure, 1-1-transverse reinforcing rib, 1-2-outer retainer ring, 1-3-pipe shaft, 1-4-inner retainer ring, 1-5-first rib plate, 1-6-second rib plate, 2-barrel body and 3-uppermost cross beam.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:

as shown in fig. 1 to 3, the present embodiment provides a lifting lug structure for hoisting a loop reactor, where the loop reactor includes a cylinder 2, the cylinder 2 is composed of two parallel straight pipes and an elbow pipe connecting ends of the two straight pipes, and a plurality of cross beams are connected between the two straight pipes. Each loop reactor is provided with two lifting lug structures 1, and the lifting lug structures 1 are arranged at two ends of the uppermost cross beam 3. The uppermost cross beam 3 is of an H-shaped steel structure and comprises a web plate and two wing plates.

Each lifting lug structure 1 comprises six transverse reinforcing ribs 1-1, an outer retainer ring 1-2, a pipe shaft 1-3, an inner retainer ring 1-4, two first rib plates 1-5 and six second rib plates 1-6.

The pipe shaft 1-3 is sleeved outside the uppermost cross beam 3, and the pipe shaft 1-3 is welded with four corner points of two wing plates of the uppermost cross beam 3. The tubular shaft 1-3 is used for sleeving and hanging a connecting steel wire rope during hoisting.

The outer retainer ring 1-2 and the inner retainer ring 1-4 are respectively welded on the outer side and the inner side of the tubular shaft 1-3 and used for preventing the steel wire rope from sliding out during hoisting. As an alternative embodiment mode, the height of the outer retainer ring 1-2 and the inner retainer ring 1-4 exceeding the pipe shaft 1-3 is 2/3 of the diameter of the steel wire rope during hoisting.

The transverse reinforcing ribs 1-1 are respectively welded between the outer retainer ring 1-2 and the two wing plates of the uppermost cross beam 3, and between the inner retainer ring 1-4 and the two wing plates of the uppermost cross beam 3. The transverse reinforcing ribs 1-1 are used for reducing the axial force of the outer retainer ring 1-2 and the inner retainer ring 1-4. Specifically, two transverse reinforcing ribs 1-1 are welded between the outer retainer ring 1-2 and an upper wing plate, and the two transverse reinforcing ribs 1-1 are symmetrical relative to a web plate of the uppermost cross beam 3; two transverse reinforcing ribs 1-1 are welded between the outer retainer ring 1-2 and the wing plate at the lower part, and the two transverse reinforcing ribs 1-1 are symmetrical relative to the web plate of the cross beam 3 at the uppermost part; meanwhile, the outer retainer ring 1-2 is aligned with the upper and lower positions of the transverse reinforcing rib 1-1 between the upper wing plate and the lower wing plate. Two transverse reinforcing ribs 1-1 are welded between the inner retainer ring 1-4 and the upper wing plate, and the two transverse reinforcing ribs 1-1 are symmetrical relative to the web plate of the cross beam 3 at the uppermost part; meanwhile, the axial positions of the transverse reinforcing ribs 1-1 between the outer retainer ring 1-2 and the inner retainer ring 1-4 and the upper wing plate are aligned.

The first rib 1-5 is provided at an inner section of the pipe shaft 1-3 of the uppermost cross member 3 at an intermediate position of the pipe shaft 1-3, i.e., at a force application point of the pipe shaft 1-3, for reinforcing the strength of the uppermost cross member 3 to strengthen the energy level of the pipe shaft 1-3. The two first rib plates 1-5 are symmetrically arranged on two sides of the web plate of the cross beam 3 on the uppermost part, and each first rib plate 1-5 is perpendicular to the web plate and the wing plate of the cross beam 3 on the uppermost part. And each first rib plate 1-5 is welded with the web plate and the wing plate of the cross beam 3 at the uppermost part.

Second rib plates 1-6 are arranged at the section between the tubular shaft 1-3 and the barrel body 2 of the uppermost cross beam 3, and each second rib plate 1-6 is perpendicular to the web plate of the uppermost cross beam 3 and parallel to the wing plates of the uppermost cross beam 3. The six second rib plates 1-6 are welded on two sides of the web plate of the cross beam 3 at the uppermost part and are symmetrical relative to the web plate; three second rib plates 1-6 are respectively welded on two sides of the web plate, and the three second rib plates 1-6 are uniformly distributed between the two wing plates. The second webs 1-6 are mainly used to stiffen the uppermost beam 3.

For checking the strength of the lifting lug structure, the equivalent stress and the shear stress of the uppermost cross beam 3 when the lifting lug structure is stressed are mainly checked, so that the allowable stress and the allowable shear stress of the material are compared. Namely, the sectional area is obtained according to the cross section of the cross beam 3 at the uppermost part, the bending moment is obtained according to the stress, so that the stress of the cross beam 3 at the uppermost part is obtained, the stress is determined to be far less than the allowable stress of the material, and the structural strength of the lifting lug is proved to be satisfied. And further utilizing finite element analysis to obtain that the maximum displacement of the loop reactor is less than the total length/500 in a hoisting state, and the maximum equivalent stress is less than the allowable stress of the material, so that the lifting lug structure meets the hoisting condition.

Therefore, the transverse reinforcing rib 1-1, the outer retainer ring 1-2, the tubular shaft 1-3, the inner retainer ring 1-4, the first rib plate 1-5 and the second rib plate 1-6 are integrally welded at the end part of the uppermost cross beam 3 to form a lifting lug structure 1, so that the lifting lug structure is convenient to unhook, safe and reliable, and has little damage to a device barrel; and the workload can be saved, the hoisting time can be effectively controlled, the hoisting efficiency is improved, and the hoisting cost is saved.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make various changes and modifications within the spirit and scope of the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A lifting lug structure for hoisting a loop reactor is characterized in that the lifting lug structure is arranged at two ends of a cross beam at the uppermost part of the loop reactor; the uppermost cross beam is of an H-shaped steel structure and comprises a web plate and two wing plates;

2. The lifting lug structure for hoisting the loop reactor according to claim 1, wherein the height of the outer retainer ring and the inner retainer ring exceeding the tubular shaft is 2/3 of the diameter of the steel wire rope during hoisting.

3. The loop reactor lifting lug structure as claimed in claim 1, wherein the transverse reinforcing ribs between the outer retainer ring or the inner retainer ring and the same wing plate are symmetrical with respect to the web.

4. The loop reactor lifting lug structure according to claim 1, wherein the first rib plate is located in the middle of the tubular shaft.

5. A loop reactor lifting lug structure according to claim 1, wherein the second webs on each side of the web of the uppermost beam are evenly distributed between the two wings of the uppermost beam.