CN217417859U - Pipe shaft type lifting lug for hoisting large-scale tower equipment - Google Patents

Abstract

The utility model provides a spool formula lug for hoisting of large-scale tower equipment, including the lug pipe of cavity hollow shaft form, fixed cover is equipped with outer retaining ring, interior retaining ring and reinforcement circle in proper order on the pipe shaft of lug pipe, and wherein the stiff end of reinforcement circle next-door neighbour lug pipe has a plurality of outer gussets in the welding on the outer pipe wall of free end. The utility model has the advantages that the outer baffle ring of the existing tube shaft type lifting lug is welded with a plurality of outer rib plates, the bearing capacity of the outer baffle ring is enhanced, the outer baffle ring is mainly used for positioning the lifting rigging on the lifting lug pipe, the horizontal force generated by the lifting rigging along the axial direction of the lifting lug pipe in the lifting process is resisted, and the lifting rigging is prevented from sliding down from the lifting lug pipe in the lifting process; the reinforcement circle is according to treating the hoisting equipment barrel radian and makes the arc to the laminating welds in treating the hoisting equipment barrel, and the reinforcement circle can increase the thickness that the hoisting equipment barrel was treated to shaft type lug department in addition, and then the reinforcing treats the bearing capacity of the produced local stress of shaft type lug atress of hoisting equipment barrel in hoist and mount process.

Description

Pipe shaft type lifting lug for hoisting large-scale tower equipment

Technical Field

The utility model belongs to the technical field of hoist and mount, concretely relates to a tube shaft formula lug for hoisting of large-scale tower equipment.

Background

In recent years, the refining and chemical integration projects of the ten-thousand-ton level in the petrochemical industry are increased, the scale of production devices is increased, and the devices in the devices are increased in size and the devices of the ten-thousand-ton level are increased. In order to shorten the construction period, improve the manufacturing quality of large-scale equipment and reduce various risks of equipment manufactured on a construction site, more and more large-scale equipment do not adopt a sectional hoisting mode any more, but adopt an integral hoisting mode.

The lifting lug is used as a main stress point in the hoisting process of the large-scale equipment, and the safety of the hoisting operation of the large-scale equipment is directly influenced. The main lifting lug of the tower equipment usually adopts a tubular shaft type lifting lug which has the advantages of large lifting load, convenient manufacture, convenient connection and removal of a lifting rigging and the like. The maximum nominal lifting weight of a standard lifting lug, namely a single-piece tube-axis type lifting lug, which can be selected in the current national standard and industrial standard is only 300t, and the lifting requirement of ultra-large equipment can not be met. If the hoisting quality of the raffinate tower equipment of the aromatic hydrocarbon combination unit in a certain project is about 4500t, in order to ensure the safe hoisting of the equipment, a pipe shaft type lifting lug meeting the hoisting requirement of the equipment needs to be designed and manufactured.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tube shaft formula lug that is used for large-scale tower equipment to hoist to overcome above-mentioned technical defect.

In order to solve the technical problem, the utility model provides a tube-shaft type lifting lug for hoisting large-scale tower equipment, which comprises a hollow tube-shaft-shaped lifting lug tube, wherein a tube orifice at one end of the lifting lug tube is used as a free end, a tube orifice at the other end is used as a fixed end welded on a cylinder body of equipment to be hoisted, and an outer check ring, an inner check ring and a reinforcing ring are sequentially fixedly sleeved on the cylinder body of the lifting lug tube, wherein the reinforcing ring is close to the fixed end of the lifting lug tube;

the outer retainer ring is close to the free end of the lug pipe, and a plurality of outer rib plates are welded on the outer pipe wall of the free end.

Furthermore, a plurality of outer rib plates are arranged on the outer pipe wall of the free end of the lug pipe at equal intervals along the circumferential direction, the plate surface of each outer rib plate is perpendicular to and is tightly welded on the outer pipe wall of the lug pipe and the ring surface of the outer retainer ring, and the ring surface of the outer retainer ring is an annular disc surface perpendicular to the outer pipe wall of the lug pipe.

Preferably, all outer gusset's structure is the same and all is the square slice form, and the square slice has four board walls end to end at least, and wherein two board walls are the right angle contained angle and weld respectively in the ring face of the body of lug pipe and outer retainer ring, and two other board walls of square slice cut into the chamfer after constituting the contained angle.

Furtherly, the stiff end mouth of pipe of lug pipe is the shape of a saddle that matches in treating the lifting device stack shell, and just hugs closely treating the lifting device stack shell just to the annular quotation of the reinforcement circle of treating the lifting device stack shell, has laid a plurality of interior gussets along the equidistant interval welding of circumference in the annular quotation of the reinforcement circle of deviating from treating the lifting device stack shell.

Preferably, the inner rib plate is of a strip structure with the width gradually reduced, the widest end of the strip is welded on the outer pipe wall of the lug pipe, and the length of the inner rib plate is smaller than the ring width of the reinforcing ring; all the inner rib plates are clamped and welded between the inner retainer ring and the reinforcing ring.

Furthermore, the hollow pipe cavity of the lug pipe is welded with a well-lattice-shaped reinforcing structure formed by splicing and inserting the transverse reinforcing ribs and the vertical reinforcing ribs, the transverse reinforcing ribs and the vertical reinforcing ribs are identical in structure and comprise rectangular plates, and open grooves used for splicing and inserting are formed in the surfaces of the rectangular plates.

The beneficial effects of the utility model are as follows:

(1) a plurality of outer rib plates are welded on an outer retainer ring of the existing pipe shaft type lifting lug, so that the bearing capacity of the outer retainer ring is enhanced, the outer retainer ring is mainly used for positioning a hoisting rigging on a lifting lug pipe, resisting horizontal force generated by the hoisting rigging along the axial direction of the lifting lug pipe in the hoisting process, and preventing the hoisting rigging from sliding down from the lifting lug pipe in the hoisting process;

(2) the reinforcement circle is according to treating the arc of hoisting equipment barrel radian making to the laminating welds in the equipment barrel, and the thickness of hoisting equipment barrel is treated in the outer reinforcement circle can increase the pipe shaft formula lug department, and then the reinforcing treats the bearing capacity of the produced local stress of pipe shaft formula lug atress of hoisting equipment barrel in hoist and mount process.

In order to make the above and other objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic structural view of a tube-axis type lifting lug.

Fig. 2 is a front view of the tube-axis type lug.

Fig. 3 is a schematic structural diagram of the reinforcing rib before splicing and inserting.

Fig. 4 is a schematic structural diagram of the reinforcing rib after splicing and inserting.

Fig. 5 is a schematic view of the application of the tube-axis type lifting lug.

Description of reference numerals:

1. an ear-hanging tube; 2. reinforcing rings; 3. an inner rib plate; 4. an inner retainer ring; 5. an outer retainer ring; 6. an outer rib plate; 7. a vertical reinforcing rib; 8. transverse reinforcing ribs; 9. a main lifting lug; 10. lifting the tail lifting lug; 11. and (6) plugging the welding hole.

Detailed Description

The following description is given for illustrative embodiments of the invention, and other advantages and effects of the invention will be apparent to those skilled in the art from the disclosure of the present invention.

It should be noted that, in the present invention, the upper, lower, left and right in the drawings are regarded as the upper, lower, left and right of the tube-shaft type lifting lug for hoisting large-scale tower equipment described in this specification.

The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, which, however, may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art. The terminology used in the exemplary embodiments presented in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

This embodiment relates to a spool formula lug for hoisting of large-scale tower equipment, as shown in fig. 1, including the lug pipe 1 of cavity tubular shaft form, the one end mouth of pipe of lug pipe 1 is as the free end, and the other end mouth of pipe is as the welding at the stiff end of treating the lifting device stack shell, and fixed cover is equipped with outer retaining ring 5, interior retaining ring 4 and reinforcement circle 2 in proper order on the stack shell of lug pipe 1, and wherein reinforcement circle 2 is close to the stiff end of lug pipe 1, and when using, reinforcement circle 2 is hugged closely and is welded in treating the lifting device stack shell.

It should be noted that the outer retainer ring 5, the inner retainer ring 4 and the reinforcing ring 2 are sequentially welded to the pipe body of the lug pipe 1.

Ear of hanging pipe 1 is rolled up by low-alloy high strength steel board and is made, and welded joint only limits to one, opens two-sided groove welding, specifically, ear of hanging pipe 1's stiff end (be reinforcement circle 2 place mouth of pipe promptly) makes the shape of a saddle according to equipment barrel radian to open two-sided groove, with equipment barrel welding.

The fixed end of the lug pipe 1, namely the lug pipe 1 is welded at the end part of the cylinder body of the equipment to be hoisted.

The difference between the maximum outer diameter and the minimum outer diameter on the same section of the lug pipe 1 is not more than 2 per mill of the outer diameter of the section.

The axes of the two pieces of lug tubes 1 should be perpendicular to the axial centerline of the device (see fig. 5) with a deviation of no more than 0.1 °.

The coaxiality of the lug pipe 1 is less than or equal to 5 mm.

And the surface roughness Ra12.5 of the lifting lug pipe between the inner retainer ring 4 and the outer retainer ring 5.

The lug pipe 1 is mainly used for being connected with a hoisting rigging and is a main stressed part of the pipe shaft type lug.

Referring to fig. 1, the outer retainer ring 5 is close to the free end of the lug pipe 1, a plurality of outer rib plates 6 are welded on the outer pipe wall of the free end, the outer rib plates 6 are welded on the outer pipe wall of the free end of the lug pipe 1 at equal intervals along the circumferential direction, the plate surface of each outer rib plate 6 is respectively welded on the outer pipe wall of the lug pipe 1 and the ring surface of the outer retainer ring 5 vertically and closely, and the ring surface of the outer retainer ring 5 is an annular disc surface perpendicular to the outer pipe wall of the lug pipe 1.

The outer retainer ring 5 is a circular ring made of a steel plate and is welded with the lifting lug pipe 1 and the outer rib plate 6 respectively, and is mainly used for positioning the lifting rigging on the lifting lug pipe 1, resisting horizontal force generated by the lifting rigging along the axial direction of the lifting lug pipe in the lifting process and preventing the lifting rigging from sliding down from the lifting lug pipe in the lifting process.

Outer gusset 6 is the gusset that the steel sheet was made, welds with lug pipe 1, outer retainer ring 5 respectively, and the purpose strengthens outer retainer ring 5's bearing capacity, specifically, all outer gussets 6 the same and all be the square slice form of structure, and the square slice has four plate walls of end to end at least, and wherein two plate walls are right angle contained angle and weld respectively in the body of lug pipe 1 and the anchor ring of outer retainer ring 5, and two other plate walls of square slice cut into the chamfer after constituting the contained angle.

As can be seen from fig. 1, the side wall of the outer rib plate 6 is flush with the outer ring surface of the outer retainer 5, and similarly, the other side wall of the outer rib plate 6 is flush with the free end pipe orifice of the lifting lug pipe 1, so as to ensure the enhanced bearing capacity of the outer retainer, and simultaneously have the advantages of beauty and safety, and avoiding scratch.

The pipe orifice of the fixed end (welded at the end part of the cylinder body of the equipment to be hoisted) of the lifting lug pipe 1 is in a saddle shape matched with the cylinder body of the equipment to be hoisted, the annular disc surface of the reinforcing ring 2 facing the cylinder body of the equipment to be hoisted is tightly attached to the cylinder body of the equipment to be hoisted, the reinforcing ring 2 is a low-alloy high-strength plate circular ring, the circular ring is made into an arc shape according to the radian of the cylinder body of the equipment to be hoisted, a plurality of plug welding holes 11 (refer to figure 2) are arranged on the reinforcing ring 2, and the reinforcing ring 2 is respectively welded with the cylinder body of the equipment to be hoisted and the lifting lug pipe 1; the reinforcing ring 2 can increase the thickness of the cylinder body of the main lifting lug to be hoisted, so that the bearing capacity of the local stress generated by the stress of the main lifting lug in the hoisting process of the cylinder body of the equipment to be hoisted is enhanced.

As shown in fig. 1, a plurality of inner rib plates 3 are arranged on the annular disc surface of a reinforcing ring 2 deviating from a cylinder body of equipment to be hoisted at equal intervals along the circumferential direction in a welding manner, the inner rib plates 3 are of a lath structure with gradually reduced width, the widest end of each lath is welded on the outer pipe wall of the lug pipe 1, and the length of each inner rib plate 3 is smaller than the ring width of the reinforcing ring 2.

All the inner rib plates 3 are clamped and welded between the inner retainer ring 4 and the reinforcing ring 2, specifically, referring to fig. 1, the left plate surface of each inner rib plate 3 is welded to the inner retainer ring 4, the right plate surface of each inner rib plate 3 is welded to the reinforcing ring 2, and the widest end of each inner rib plate 3 is welded to the outer pipe wall of the lug pipe 1, so that uniform stress is ensured, and the overall strength is improved.

The inner rib plate 3 is made of steel plates and is welded with the reinforcing ring 2, the lug pipe 1 and the inner check ring 4 respectively, and the inner rib plate 3 transmits the stress of the pipe shaft type lifting lug in the lifting process to a cylinder body of equipment to be lifted in a larger area.

As shown in fig. 1, the welding has the well check form additional strengthening that inserts the welding and constitute by horizontal strengthening rib 8 and vertical strengthening rib 7 in the hollow tube intracavity of hangers pipe 1, wherein horizontal strengthening rib 8 is the same with vertical strengthening rib 7's structure, all include the rectangular plate, the open slot that is used for piecing together the inserting is offered to the face of rectangular plate, refer to fig. 3 and fig. 4, form the groined type structure shown in fig. 4 after two kinds of strengthening ribs (horizontal strengthening rib 8 and vertical strengthening rib 7) are pieced together along the open slot, when actually using, can cut the outer lane of groined type structure, polish for the shape of the lumen of matching hangers pipe 1.

The well-grid reinforcing structure is respectively welded with the lug pipe 1 and the equipment cylinder body so as to increase the bearing capacity of the lug pipe 1.

The welding sequence of the pipe shaft type lifting lug for hoisting the large-scale tower equipment provided by the embodiment is as follows:

the lug pipe 1 is welded with a cylinder of equipment to be hoisted;

the reinforcing ring 2 is welded with the cylinder body of the equipment to be hoisted and the lifting lug pipe 1;

the transverse reinforcing ribs 8 and the vertical reinforcing ribs 7 are welded in an assembling way;

the transverse reinforcing ribs 8 and the vertical reinforcing ribs 7 are assembled and then welded with the equipment cylinder and the lifting lug pipe 1;

the inner rib plate 3 is welded with the reinforcing ring 2 and the lug pipe 1;

the inner retainer ring 4 is welded with the lifting lug pipe 1 and the inner rib plate 3;

the outer retainer ring 5 is welded with the lug pipe 1;

the outer rib plate 6 is welded with the lug pipe 1 and the outer retainer ring 5.

The welded pipe shaft type lifting lug has the capability of integrally lifting 5000 t-level tower equipment, the construction period of construction engineering can be shortened, the manufacturing quality of large-scale tower equipment is improved, and various risks of manufacturing the large-scale tower equipment on a construction site are reduced, wherein the large scale in the large-scale tower equipment means that the weight of the tower equipment is about 5000t (ton).

Specifically, the tube-axis lifting lug provided by the embodiment is 2500 t-grade, and if 5000 t-grade tower equipment is to be lifted, two 2500 t-grade tube-axis lifting lugs need to be manufactured to serve as main lifting lugs for lifting in place of the 5000 t-grade tower equipment so as to be used for lifting in place of an ultra-large tower.

Referring to fig. 5, the tube-axis type lifting lug is used as follows:

the pipe shaft type lifting lug is used as a main lifting lug of 5000 t-level tower equipment, when the equipment is hoisted, a lifting hook of a main hoisting crane is connected with the main lifting lug 9 of large-scale tower equipment through a hoisting rigging, the lifting hook of the main hoisting crane is stably hoisted to drive the equipment to be hoisted upwards, meanwhile, under the action of the gravity of the hoisted equipment, the equipment rotates along the central lines of the two main lifting lugs 9, under the auxiliary action of a tail hoisting crane (connected with the tail hoisting lifting lug 10), the equipment is gradually erected from a horizontal state and finally is in a vertical state, the tail hoisting crane quits hoisting operation, the main hoisting crane hoists the equipment to be right above an equipment foundation, and finally the equipment is installed in place.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims (6)

1. The utility model provides a spool formula lug for hoisting of large-scale tower equipment, includes the lug pipe (1) of cavity tubular axle form, the one end mouth of pipe of lug pipe (1) is as the free end, and the other end mouth of pipe is as welding the stiff end at treating the lifting device stack shell, its characterized in that: an outer check ring (5), an inner check ring (4) and a reinforcing ring (2) are sequentially fixedly sleeved on the pipe body of the lug pipe (1), wherein the reinforcing ring (2) is close to the fixed end of the lug pipe (1);

the outer retainer ring (5) is close to the free end of the lug pipe (1), and a plurality of outer rib plates (6) are welded on the outer pipe wall of the free end.

2. The pipe shaft type lifting lug for hoisting large-scale tower equipment according to claim 1, wherein: the outer rib plates (6) are circumferentially arranged on the outer pipe wall of the free end of the lug pipe (1) at equal intervals, and the plate surface of each outer rib plate (6) is vertically and tightly welded to the outer pipe wall of the lug pipe (1) and the ring surface of the outer check ring (5) respectively;

the ring surface of the outer retainer ring (5) is an annular disc surface vertical to the outer pipe wall of the lifting lug pipe (1).

3. The pipe shaft type lifting lug for hoisting large-scale tower equipment according to claim 2, wherein: all outer gusset (6) the same and all be the square slice form of structure, and the square slice has four walls of end to end at least, and wherein two walls are the right angle contained angle and weld respectively in the anchor ring of the body of lug pipe (1) and outer retaining ring (5), and two other walls of square slice cut into the chamfer after constituting the contained angle.

4. The tube-axis type lifting lug for hoisting large-scale tower equipment as claimed in claim 1, wherein: the stiff end mouth of pipe of lug pipe (1) is the shape of a saddle that matches in treating the lifting device stack shell, and just hugs closely treating the lifting device stack shell just to the annular quotation of treating the reinforcement circle (2) of lifting device stack shell, has laid a plurality of interior gusset (3) along the equidistant interval welding of circumference in the annular quotation that deviates from the reinforcement circle (2) of treating the lifting device stack shell.

5. The tube-axis type lifting lug for hoisting large-scale tower equipment as claimed in claim 4, wherein: the inner rib plates (3) are of a batten structure with the width gradually reduced, the widest ends of the battens are welded on the outer pipe wall of the lug pipe (1), and the length of the inner rib plates (3) is smaller than the ring width of the reinforcing ring (2);

all the inner rib plates (3) are clamped and welded between the inner retainer ring (4) and the reinforcing ring (2).

6. The pipe shaft type lifting lug for hoisting large-scale tower equipment according to claim 1, wherein: the welding of the hollow pipe intracavity of lug pipe (1) has the well check form additional strengthening of piecing together the welding to form by horizontal strengthening rib (8) and vertical strengthening rib (7), and wherein the structure of horizontal strengthening rib (8) and vertical strengthening rib (7) is the same, all includes the rectangular plate, and the open slot that is used for piecing together the inserting is seted up to the face of rectangular plate.

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