Turning and lifting tool for ball end socket of large reactor
By adopting 4 shaft hoisting lugs tooling, the safety risks and large construction volume problems of large reactor ball head turn over and lifting operations are solved, and higher safety and balance are achieved, saving construction volume and improving work efficiency.
Patent Information
- Application Number
- CN202421661048.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-15
AI Technical Summary
The rollover and lifting operations of existing large reactor ball heads have problems such as safety risks, large construction volume, poor balance and low lifting safety.
It adopts a tooling with 4 shaft hoisting lugs, and the support unit is symmetrically arranged on the outer wall of the ball head. The hoisting lugs include a pipe shaft and a retaining ring, and are balanced in force, suitable for turning over and hanging operations, without additional welding of other hoisting lugs.
It improves the safety and balance of the ball head turn over and lifting operations, saves construction volume, and improves work efficiency.
Smart Images
Figure CN222922751U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the tooling technology, in particular to a turnover and lifting tooling for the spherical head of a large reactor. Background Art
[0002] The manufacturing of spherical heads is the key point in the manufacturing of large reactors. Due to their large weight, large diameter, and large volume, there are potential safety risks in the turnover and hoisting operations. The common practice is to weld plate-type lifting lugs or vertical-axis lifting lugs for turnover, and then weld other tooling lifting lugs during hoisting.
[0003] However, the existing operation methods have the following problems:
[0004] 1. Different lifting lugs need to be assembled and welded respectively for the turnover and hoisting operations of the head, resulting in a large amount of construction work.
[0005] 2. The setting of plate-type lifting lugs needs to consider the center of gravity position. After turnover, the relative position between the lifting point and the center of gravity changes, increasing the possibility of overturning.
[0006] 3. During the turnover process of plate-type lifting lugs or vertical-axis ears, the sling is prone to unhooking or the steel wire rope is scratched, resulting in poor hoisting safety and stability.
[0007] 4. Plate-type lifting lugs or vertical-axis ears require special shackles. Content of the Utility Model
[0008] To solve the defects of the above-mentioned existing technologies, the utility model provides a turnover and lifting tooling for the spherical head of a large reactor, which adopts 4 shaft-type lifting lugs, is easy to control the balance, has high safety, and can be used for the turnover and hoisting operations of the spherical head without additional welding of other lifting lugs, saving the construction work and improving the work efficiency.
[0009] To achieve the above technical purpose, the utility model adopts the following technical scheme: a turnover and lifting tooling for the spherical head of a large reactor, including two support units, the two support units are symmetrically arranged on the outer wall of the spherical head and are parallel to each other. The support unit includes two lifting lugs, and the four lifting lugs are equidistantly distributed from the center line of the spherical head. The lifting lug includes a pipe shaft and at least two retaining rings. The pipe shaft is horizontally arranged on the outer wall of the spherical head, and the retaining rings are evenly distributed at one end of the pipe shaft relative to the spherical head.
[0010] Preferably, a plurality of main rib plates are arranged in the pipe shaft, the main rib plates are fixedly welded to each other in a staggered manner, and the ends are fixedly welded to the inner wall of the pipe shaft.
[0011] Preferably, a plurality of reinforcing plates are arranged on the outer wall of the pipe shaft, the reinforcing plates are fixedly welded to the outer wall of the pipe shaft in a circumferential and uniform manner, and the reinforcing plates are fixedly welded to the spherical head.
[0012] Preferably, a backing plate is welded to one end of the retaining ring relative to the pipe axis. The backing plate is shaped to conform to the outer wall of the spherical head, and the backing plate is fixedly welded to the outer wall of the spherical head.
[0013] Preferably, the distance between the retaining ring and the edge of the outer wall of the spherical head is greater than 150 mm.
[0014] In summary, the present utility model has achieved the following technical effects:
[0015] For the large reactor spherical head turning and lifting tooling of the present utility model, 4 shaft-type lifting lugs are adopted, with balanced force, easy control of balance, high safety, and can be used for the turning and lifting operations of the spherical head. There is no need to weld other lifting lugs additionally, saving the construction amount and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural view of the large reactor spherical head turning and lifting tooling of the present utility model;
[0017] Figure 2 is a top view of the large reactor spherical head turning and lifting tooling of the present utility model;
[0018] Figure 3 is a schematic structural view of the lifting lug of the large reactor spherical head turning and lifting tooling of the present utility model;
[0019] Figure 4 is Figure 3 a sectional view taken along the AA direction of
[0020] Explanation of the reference numerals in the drawings: 1, lifting lug; 2, spherical head; 11, pipe axis; 12, main rib plate; 13, retaining ring; 14, reinforcing plate; 15, backing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] The present utility model will be further described in detail below with reference to the accompanying drawings.
[0022] This specific embodiment is only an explanation of the present utility model and is not a limitation thereof. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as they are within the scope of the claims of the present utility model, they are protected by the Patent Law.
[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.
[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically and clearly defined.
[0025] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0026] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0027] Embodiment 1:
[0028] As Figure 1As shown in Fig. -4, a turning and lifting tooling for the spherical head of a large reactor includes two support units. The two support units are symmetrically arranged on the outer wall of the spherical head 2 and are parallel to each other. The support unit includes two lifting lugs 1. The four lifting lugs 1 are equidistantly distributed from the center line of the spherical head 2. The lifting lug 1 includes a pipe shaft 11 and two retaining rings 13. The pipe shaft 11 is horizontally arranged on the outer wall of the spherical head 2, and the retaining rings 13 are evenly distributed at one end of the pipe shaft 11 relative to the spherical head 2. The welding positions of the 4 lifting lugs 1 are located at one-third of the edges on both sides of the head. The lifting lugs 1 are evenly distributed on both sides of the head center line, and the plane where the 4 lifting lugs 1 are located is parallel to the bottom plane of the spherical head 2. To avoid the steel wire rope from touching the port of the spherical head 2 during hoisting, the distance between the retaining ring of the lifting lug 1 and the edge of the head is set to be greater than 150 mm.
[0029] The turning and lifting tooling for the spherical head 2 of the large reactor in this embodiment uses 4 shaft-type lifting lugs 1, with balanced stress, easy control of balance, high safety, and can be used for the turning and lifting operations of the spherical head 2, without the need to weld other additional lifting lugs 1, saving the construction amount and improving work efficiency.
[0030] Several main rib plates 12 are arranged inside the pipe shaft 11. The main rib plates 12 are welded and fixed to each other in a staggered manner, and the ends are welded and fixed to the inner wall of the pipe shaft 11. Several reinforcing plates 14 are arranged on the outer wall of the pipe shaft 11. The reinforcing plates 14 are circumferentially and evenly welded and fixed to the outer wall of the pipe shaft 11, and the reinforcing plates 14 are welded and fixed to the spherical head 2. A backing plate 15 is welded to one end of the pipe shaft 11 relative to the retaining ring 13. The backing plate 15 is shaped to fit the outer wall of the spherical head 2, and the backing plate 15 is welded and fixed to the outer wall of the spherical head 2. The settings of the main rib plates 12 and the reinforcing plates 14 can improve the strength of the pipe shaft 11 and the strength of the welding of the pipe shaft 11 to the spherical head 2. The setting of the backing plate 15 is used to facilitate the welding of the pipe shaft 11 to the outer wall of the spherical head 2 and keep the pipe shaft 11 horizontal.
[0031] Installation sequence of the lifting lug 1:
[0032] Assemble in sequence: the main rib plate 12 and the spherical head 2; the pipe shaft 11 and the spherical head 2; the backing plate 15, the pipe shaft 11 and the spherical head 2; the retaining ring 13 and the pipe shaft 11; the reinforcing plate 14, the retaining ring 13, the pipe shaft 11 and the backing plate 15;
[0033] Welding requirements: The welding between each main rib plate 12 uses double-sided full welding; the welding between the main rib plate 12 and the pipe shaft 11 uses double-sided full welding; the welding between the main rib plate 12 and the spherical head 2 uses double-sided full welding.
[0034] Lifting and hoisting process flow of the spherical head 2: The steel wire rope is wound between the two retaining rings 13 of the four lifting lugs. (1) The crane is stationed according to the pre-determined orientation to ensure the stability of the crane outriggers; (2) The main hoist and the auxiliary hoist slowly lift the spherical head 2 synchronously according to the lifting command signal. When the head is about 100 mm off the ground, the main hoist continues to slowly lift the hook, and the auxiliary crane slowly delivers it at the same speed as the main crane's lifting speed, while ensuring that the bottom of the spherical head 2 is no more than 150 mm from the ground; (3) When the spherical head 2 is lifted by the main crane to be perpendicular to the ground and the auxiliary crane is completely unloaded, the main hoist stops lifting the hook and removes the rigging of the auxiliary crane; (4) Rotate the spherical head 2 by 180°; (5) Hang the steel wire rope of the auxiliary crane again. The auxiliary crane continues to slowly lift the hook, and the main hoist slowly delivers it at the same speed. When the spherical head 2 is parallel to the ground, the two cranes slowly lower the hook and slowly place the spherical head 2 in place, that is, the flipping and hoisting of the spherical head 2 is completed.
[0035] The above description is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention are all within the scope of the technical solution of the present invention.
Claims
1. A large reactor ball head turning and lifting tool, characterized in that: It includes two support units, which are symmetrically arranged on the outer wall of the ball head and parallel to each other. The support unit includes two lifting ears, and the four lifting ears are equidistantly distributed from the center line of the ball head. The lifting ears include a pipe axis and at least two retaining rings. The pipe axis is horizontally arranged on the outer wall of the ball head, and the retaining rings are evenly distributed on one end of the pipe axis relative to the ball head.
2. The large-scale reactor ball head turning and lifting tooling according to claim 1 is characterized in that: A plurality of main ribs are arranged in the pipe shaft, and the main ribs are welded and fixed to each other in an interlaced manner and the ends are welded and fixed to the inner wall of the pipe shaft.
3. The large-scale reactor ball head turning and lifting tool according to claim 1 is characterized in that: The outer wall of the tube shaft is provided with a plurality of reinforcing plates, the reinforcing plates are uniformly welded and fixed to the outer wall of the tube shaft in the circumferential direction, and the reinforcing plates are welded and fixed to the ball head.
4. The large-scale reactor ball head turning and lifting tool according to claim 1 is characterized in that: A pad is welded to one end of the pipe shaft relative to the retaining ring. The pad is shaped like the outer wall of the ball seal head and is fixedly welded to the outer wall of the ball seal head.
5. The large-scale reactor ball head turning and lifting tool according to claim 1 is characterized in that: The distance between the retaining ring and the edge of the outer wall of the ball head is greater than 150 mm.