CN112299230B - Special tool for hoisting high-pressure heater of thermal power plant and use method thereof - Google Patents
Special tool for hoisting high-pressure heater of thermal power plant and use method thereof Download PDFInfo
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- CN112299230B CN112299230B CN202011322151.0A CN202011322151A CN112299230B CN 112299230 B CN112299230 B CN 112299230B CN 202011322151 A CN202011322151 A CN 202011322151A CN 112299230 B CN112299230 B CN 112299230B
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- lifting
- hoisting
- pressure heater
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/18—Band-type slings
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- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a special tool for hoisting a high-pressure heater of a thermal power plant and a use method thereof, and mainly relates to the field of large-scale power station equipment installation; the lifting device comprises a lifting beam and temporary lifting lugs fixed on a high-pressure heater, wherein two connecting pieces extending downwards are symmetrically arranged at the bottom of the lifting beam, lifting slings are arranged at the bottoms of the connecting pieces, mounting positions matched with the temporary lifting lugs are arranged on the lifting slings, and the distance between the two lifting slings is adjustable; the invention can complete the positioning of the vertical high-pressure heater in a narrow space, can ensure that the height space is maximally utilized, can ensure that the tool is stressed reasonably and smoothly slides and rotates, and is safer and more reliable to use.
Description
Technical Field
The invention relates to the field of large-scale power station equipment installation, in particular to a special tool for hoisting a high-pressure heater of a thermal power plant and a use method thereof.
Background
At present, in the process of hoisting a vertical high-pressure heater, in order to enable the high-pressure heater to be hoisted from a hoisting hole and to be capable of realizing rotating, standing and translating in place, the adopted technical scheme is that two traveling cranes or other auxiliary hoisting equipment are utilized, two hoisting beams are used as special hoisting tools, steel wire ropes of the two hoisting beams are respectively connected with lifting lugs of the upper part and the lower part of a hoisting device, after the hoisting device is hoisted to a certain height, the hoisting beam on one side is hoisted to lift the upper part and the half part of the hoisting device, the hoisting beam on the other side slowly descends, the rotating and standing of the hoisting device is slowly realized until the whole hoisting device bears all loads by the hoisting beam on one side, the traveling cranes are horizontally moved to a high-pressure hoisting in-place position, and the high-pressure hoisting device is put in place on an equipment base.
However, the general practice of laying slings on a lifting beam is mainly three, and in the actual construction process, a series of problems exist, for example:
the method comprises the steps that a hook group of two lifting beams is used as a force bearing point, two steel wire ropes are arranged on each hook group, the steel wire ropes of the two lifting beams are respectively connected with temporary lifting lugs at the upper part and the lower part of a high-pressure heater, however, the steel wire ropes are arranged by using the original hook groups, the steel wire ropes form a certain angle with the horizontal direction, the steel wire ropes can be contacted with a head part of the high-pressure heater in the rotating process after lifting, the steel wire ropes are subjected to inward component force action, and the friction with the inner sides of the temporary lifting lugs is serious in the rotating process, such as the length of the steel wire ropes is increased, although the friction contact between the steel wire ropes and the head part of the high-pressure heater can be relieved, the lifting height of the high-pressure heater is obviously limited, and the problem that the positioning height space of the vertical high-pressure heater in a narrow space is insufficient can not be solved;
the method II comprises the steps that a self-carrying hook group of the lifting beam is removed, two special steel wire ropes are erected on the upper portion of the lifting beam, the upper portion of the lifting beam serves as a force bearing point, the steel wire ropes of the two lifting beams are respectively connected with temporary lifting lugs on the upper portion and the lower portion of a high-pressure heater, however, the two special steel wire ropes are erected on the upper portion of the lifting beam, the upper portion of the lifting beam serves as the force bearing point, in the rotating process after lifting, under the action of friction force between the steel wire ropes and the temporary lifting lugs on the high-pressure heater, the steel wire ropes tend to slide on the lifting beam, friction force between the steel wire ropes and the lifting beam can enable the lifting beam to incline in the vertical direction, direct influence is brought to tool stress, and safety risks exist;
and thirdly, two hoisting points are newly arranged at the lower part of the lifting beam, two special steel wire rope slings are installed, the lower part of the lifting beam is used as a bearing point, the steel wire ropes of the two lifting beams are respectively connected with temporary lifting lugs at the upper part and the lower part of the high-pressure heater, however, the hoisting points are arranged at the lower part of the lifting beam, the special steel wire rope slings are installed, and in the rotating process after hoisting, the steel wire ropes and the temporary lifting lugs of the high-pressure heater are subjected to rigid friction under stress, so that the steel wires of the steel wire ropes have the hidden danger of abrasion and wire breakage, and are unfavorable for the equipment.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a special tool for hoisting a high-pressure heater of a thermal power plant and a use method thereof, which can complete the positioning of the vertical high-pressure heater in a narrow space, can ensure the maximum utilization of the height space, can ensure the reasonable stress of the tool, can smoothly slide and rotate, and is safer and more reliable to use.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a thermal power factory high pressure feed water heater hoists special frock, is including lifting the hanging beam, fixing the interim lug on high pressure feed water heater, the bottom symmetry of lifting the hanging beam is equipped with two downwardly extending's connecting piece, the bottom of connecting piece is equipped with the hoist and mount hoist, be equipped with the installation position that suits with interim lug on the hoist and mount hoist, and two distance between the hoist and mount hoist is adjustable.
Preferably, the appearance of interim lug is cylindricly, bottom surface in the installation position is the arc, the one end that high pressure feed water heater was kept away from to interim lug is equipped with the baffle, be equipped with the limiting plate that suits with the baffle on the installation position.
Preferably, the hoisting sling comprises an arc-shaped steel belt adapted to the temporary lifting lug and connecting steel belts arranged at two ends of the top of the arc-shaped steel belt.
Preferably, each connecting piece comprises two steel hanging strips, one end of each connecting piece is hinged to the lifting beam, the other end of each connecting piece is hinged to the lifting sling, and hinged shafts at the upper end and the lower end of each connecting piece are parallel.
Preferably, the upper end and the lower end of the steel sling are provided with reinforcing plates.
Preferably, a polytetrafluoroethylene plate is arranged between the steel hanging strip and the lifting beam, and lubricating oil is coated on the polytetrafluoroethylene plate.
Preferably, the baffle is a flange cover, and the baffle is fixed at the end of the temporary lifting lug through screws.
Preferably, the left end and the right end of the top of the lifting beam are hinged with pull plates connected with a lifting hook of a travelling crane.
A use method of a special tool for hoisting a high-pressure heater of a thermal power plant comprises the following steps:
s1, welding temporary lifting lugs at the left end and the right end of the top of the high-pressure heater;
s2, respectively installing the two hoisting lifting appliances on the corresponding temporary lifting eyes;
s3, mounting the baffle at the end part of the temporary lifting lug;
and S4, connecting the lifting beam with a lifting hook of the crane.
Compared with the prior art, the invention has the beneficial effects that:
1. the distance between the two hoisting lifting appliances is adjustable, and the hoisting lifting appliances can be suitable for hoisting high-pressure heaters of different models;
2. the arc-shaped steel belt and the baffle are matched to play a role of stopping, so that the arc-shaped steel belt can be prevented from sliding off the temporary lifting lug, and the safety and the stability of lifting can be ensured;
3. the arc-shaped steel belt can meet the requirement of relative rotation between the temporary lifting lug and the arc-shaped steel belt in the hoisting process;
4. one end of the connecting piece is hinged with the lifting beam, and the other end of the connecting piece is hinged with the lifting sling, so that the influence of slight shaking in the lifting process on the lifting beam can be absorbed, and the connecting piece is convenient to install and disassemble on site;
5. the precision equipment disclosed by the invention is less in investment, simple in construction process, convenient to operate, easy to control, economical and practical, short in construction period and low in cost, can ensure that the height space is maximally utilized, can ensure that the tool is stressed reasonably, smoothly slides and rotates, and is safer and more reliable to use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
figure 2 is a schematic structural view of a lifting sling;
fig. 3 is a use state reference diagram of the present invention.
The reference numbers in the drawings: 1. lifting the hanging beam; 2. a high pressure heater; 3. temporary lifting lugs; 4. a connecting member; 5. hoisting a lifting appliance; 6. an installation position; 7. a baffle plate; 8. a limiting plate; 9. connecting the steel belts; 10. a reinforcing plate; 11. a polytetrafluoroethylene sheet; 12. and (5) pulling the plate.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
Example (b): as shown in the attached drawings 1-3, the invention relates to a special tool for hoisting a high-pressure heater of a thermal power plant, which comprises a hoisting beam 1 and temporary lifting lugs 3 fixed on the high-pressure heater 2, wherein the number of the temporary lifting lugs 3 is four, two temporary lifting lugs are in a group, and a group of temporary lifting lugs 3 are welded on the outer walls of the upper end and the lower end of the high-pressure heater 2. The bottom of the lifting beam 1 is symmetrically provided with two connecting pieces 4 extending downwards, the bottom of each connecting piece 4 is provided with a lifting sling 5, the lifting sling 5 is provided with an installation position 6 matched with the temporary lifting lug 3, and the distance between the two lifting slings 5 is adjustable.
Preferably, the appearance of interim lug 3 is cylindricly, the bottom surface in the installation position 6 is undercut's arc, the one end that interim lug 3 kept away from high pressure heater 2 is equipped with baffle 7, be equipped with the limiting plate 8 that suits with baffle 7 on the installation position 6, can satisfy the relative pivoted demand between interim lug of hoist and the hoist and mount hoist 5 of hoist and mount in-process, through the cooperation of baffle 7 and limiting plate 8, can prevent that interim lug 3 from droing from installation position 6, can guarantee the stability and the security of hoist and mount.
Preferably, for the convenience of the present invention, the baffle 7 is a flange cover, and the baffle 7 is fixed at the end of the temporary lifting lug 3 by screws.
Further, hoist and mount hoist 5 includes the arc steel band that suits with interim lug 3, sets up the connection steel band 9 at the both ends at the top of arc steel band, adopts the integral type structure between connection steel band 9 and the arc steel band, and the arc steel band can satisfy relative pivoted demand between interim lug of hoist and mount in-process and the arc steel band.
Further, in order to reduce friction in the rotating process, a polytetrafluoroethylene plate 11 is arranged between the steel hanging strip and the lifting beam 1, and lubricating oil is coated on the polytetrafluoroethylene plate 11.
Preferably, each connecting piece 4 all includes two steel suspender, the one end of connecting piece 4 with lift hanging beam 1 and articulate, the other end and hoist 5 and articulate, just the articulated shaft at the upper and lower both ends of connecting piece 4 is parallel, specifically, lift the bottom symmetric welding of hanging beam 1 and have two lugs, two steel suspender set up respectively in the front and back both ends of lug, steel suspender passes through the round pin axle and articulates with the lug, all be equipped with the through hole that suits with the round pin axle on steel suspender, the lug, the bottom of steel suspender is articulated with connecting steel band 9 through the round pin axle, the round pin axle runs through two connecting steel band 9, all be equipped with the through hole that suits with the round pin axle on steel suspender, connecting steel band 9.
Preferably, in order to ensure the strength of the steel sling, the outer walls of the upper end and the lower end of the steel sling are welded with reinforcing plates 10.
Furthermore, the left end and the right end of the top of the lifting beam 1 are hinged with pull plates 12 connected with a lifting hook of a travelling crane, the pull plates 12 are hinged with the lifting beam 1 through pin shafts, the lifting hook is connected with the lifting beam in a pull plate pin shaft connection mode, the height of a sling can be reduced to the maximum extent, and the height of the high-pressure heater can be increased to the maximum extent.
A use method of a special tool for hoisting a high-pressure heater of a thermal power plant comprises the following steps:
s1, welding temporary lifting lugs 3 at the left end and the right end of the top of the high-pressure heater 2;
s2, respectively installing the two hoisting lifting appliances 5 on the corresponding temporary lifting lugs 3;
s3, mounting the baffle 7 at the end part of the temporary lifting lug 3;
and S4, connecting the lifting beam 1 with a lifting hook of the crane.
The lifting device is used in cooperation with a crane hook of a steam turbine room, on the basis of the original lifting beam, lifting lugs are welded after lifting points are reasonably selected at the lower part of the lifting beam, a steel lifting belt is arranged, a polytetrafluoroethylene plate with the thickness of 2mm is arranged between the steel lifting belt and the lifting lugs, grease is coated on the polytetrafluoroethylene plate, and friction in the rotating process is reduced; the arc steel band is hung on interim lug 3, and steel suspender, arc steel band, connection steel band 9 all adopt high strength metal material, width 400mm to the arc steel band has carried out the whole design of strengthening, avoids taking apart the deformation apart and is difficult to the installation, and the arc steel band satisfies the arc steel band simultaneously and goes up rotatory function on interim lug 3 under the prerequisite that satisfies the strength requirement.
According to the invention, the arc-shaped steel belt, the baffle 7 and the limiting plate 8 are matched to play a role of stopping, so that the arc-shaped steel belt can be prevented from sliding off the temporary lifting lug 3, and the safety and stability of hoisting can be ensured; the steel sling and the lifting lug, the steel sling and the connecting steel belt 9 are hinged, so that the influence of slight shaking in the hoisting process on the lifting beam can be absorbed, and the field installation and the disassembly are convenient. Meanwhile, the precision equipment adopted by the invention has the advantages of less investment, simple construction process, convenient operation, easy control, economy, practicality, short construction period and low cost, can ensure that the height space is maximally utilized, can ensure that the tool is stressed reasonably, smoothly slides and rotates, and is safer and more reliable to use.
Claims (6)
1. The utility model provides a special frock of thermal power factory high pressure feed water heater hoist and mount, is including lifting hanging beam (1), fixing interim lug (3) on high pressure feed water heater (2), its characterized in that: the bottom of the lifting beam (1) is symmetrically provided with two connecting pieces (4) extending downwards, the bottom of each connecting piece (4) is provided with a lifting sling (5), the lifting sling (5) is provided with an installation position (6) corresponding to the temporary lifting lug (3), and the distance between the two lifting slings (5) is adjustable;
the temporary lifting lug (3) is cylindrical in shape, the bottom surface in the installation position (6) is arc-shaped, a baffle (7) is arranged at one end of the temporary lifting lug (3) far away from the high-pressure heater (2), and a limiting plate (8) matched with the baffle (7) is arranged on the installation position (6);
the hoisting hanger (5) comprises an arc-shaped steel belt which is matched with the temporary lifting lug (3) and connecting steel belts (9) which are arranged at two ends of the top of the arc-shaped steel belt;
each connecting piece (4) comprises two steel hanging strips, one end of each connecting piece (4) is hinged to the lifting beam (1), the other end of each connecting piece is hinged to the lifting sling (5), and hinged shafts at the upper end and the lower end of each connecting piece (4) are parallel.
2. The special tool for hoisting the high-pressure heater of the thermal power plant as claimed in claim 1, wherein the tool comprises: and reinforcing plates (10) are arranged at the upper end and the lower end of the steel sling.
3. The special tool for hoisting the high-pressure heater of the thermal power plant as claimed in claim 1, wherein the tool comprises: a polytetrafluoroethylene plate (11) is arranged between the steel hanging strip and the lifting beam (1), and lubricating oil is coated on the polytetrafluoroethylene plate (11).
4. The special tool for hoisting the high-pressure heater of the thermal power plant as claimed in claim 1, wherein the tool comprises: the baffle (7) is a flange cover, and the baffle (7) is fixed at the end part of the temporary lifting lug (3) through screws.
5. The special tool for hoisting the high-pressure heater of the thermal power plant as claimed in claim 1, wherein the tool comprises: the left end and the right end of the top of the lifting beam (1) are hinged with pull plates (12) connected with lifting hooks of a travelling crane.
6. The use method of any one of claims 1 to 5 for the special tool for hoisting the high-pressure heater of the thermal power plant is characterized by comprising the following steps:
s1, welding temporary lifting lugs (3) at the left end and the right end of the top of the high-pressure heater (2);
s2, respectively installing the two hoisting lifting appliances (5) on the corresponding temporary lifting lugs (3);
s3, mounting the baffle (7) at the end part of the temporary lifting lug (3);
and S4, connecting the lifting beam (1) with a lifting hook of the crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011322151.0A CN112299230B (en) | 2020-11-23 | 2020-11-23 | Special tool for hoisting high-pressure heater of thermal power plant and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011322151.0A CN112299230B (en) | 2020-11-23 | 2020-11-23 | Special tool for hoisting high-pressure heater of thermal power plant and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112299230A CN112299230A (en) | 2021-02-02 |
| CN112299230B true CN112299230B (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011322151.0A Active CN112299230B (en) | 2020-11-23 | 2020-11-23 | Special tool for hoisting high-pressure heater of thermal power plant and use method thereof |
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| CN (1) | CN112299230B (en) |
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| CN203682870U (en) * | 2014-01-22 | 2014-07-02 | 嘉兴鹏翔包装材料有限公司 | Lifting appliance for thin film roll |
| WO2014117324A1 (en) * | 2013-01-29 | 2014-08-07 | 中国十七冶集团有限公司 | Method of loading and unloading slender-type pressure connection strip and apparatus therefor |
| CN105129604A (en) * | 2015-09-11 | 2015-12-09 | 巨力索具股份有限公司 | Paper-roll suspender |
| CN108502702A (en) * | 2018-03-12 | 2018-09-07 | 马鞍山钢铁股份有限公司 | A kind of suspender for overhauling lifting tension leveller of continuous casting machine |
| CN208964395U (en) * | 2018-10-12 | 2019-06-11 | 烟台市中拓合金钢有限责任公司 | A kind of steel ladle gantry hook Anti-hook releasing device |
| CN110182682A (en) * | 2019-06-03 | 2019-08-30 | 中铁大桥局集团有限公司 | A kind of suspender for the lifting of big segment steel truss girder |
| CN110963397A (en) * | 2020-01-14 | 2020-04-07 | 太原科技大学 | Carbon fiber internal and external sling for steel ladle and automatic alarm device |
-
2020
- 2020-11-23 CN CN202011322151.0A patent/CN112299230B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014117324A1 (en) * | 2013-01-29 | 2014-08-07 | 中国十七冶集团有限公司 | Method of loading and unloading slender-type pressure connection strip and apparatus therefor |
| CN203682870U (en) * | 2014-01-22 | 2014-07-02 | 嘉兴鹏翔包装材料有限公司 | Lifting appliance for thin film roll |
| CN105129604A (en) * | 2015-09-11 | 2015-12-09 | 巨力索具股份有限公司 | Paper-roll suspender |
| CN108502702A (en) * | 2018-03-12 | 2018-09-07 | 马鞍山钢铁股份有限公司 | A kind of suspender for overhauling lifting tension leveller of continuous casting machine |
| CN208964395U (en) * | 2018-10-12 | 2019-06-11 | 烟台市中拓合金钢有限责任公司 | A kind of steel ladle gantry hook Anti-hook releasing device |
| CN110182682A (en) * | 2019-06-03 | 2019-08-30 | 中铁大桥局集团有限公司 | A kind of suspender for the lifting of big segment steel truss girder |
| CN110963397A (en) * | 2020-01-14 | 2020-04-07 | 太原科技大学 | Carbon fiber internal and external sling for steel ladle and automatic alarm device |
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| CN112299230A (en) | 2021-02-02 |
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