CN107337075B - Horizontal balancing device for assembling and disassembling bearing box cover of range hood and assembling and disassembling method - Google Patents
Horizontal balancing device for assembling and disassembling bearing box cover of range hood and assembling and disassembling method Download PDFInfo
- Publication number
- CN107337075B CN107337075B CN201710649935.6A CN201710649935A CN107337075B CN 107337075 B CN107337075 B CN 107337075B CN 201710649935 A CN201710649935 A CN 201710649935A CN 107337075 B CN107337075 B CN 107337075B
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- Prior art keywords
- bearing box
- box cover
- lifting lug
- balance beam
- lifting
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Classifications
-
- 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
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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
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/0011—Balancing, e.g. counterbalancing to produce static balance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a horizontal balancing device and a dismounting method for dismounting a bearing box cover of a range hood, which are characterized in that: horizontal balancing unit includes the compensating beam, and the rear end of compensating beam is provided with the detachable balancing weight, and the front end of compensating beam is provided with the first lug with the first hoisting point coupling of bearing case lid, is provided with the third lug with the second hoisting point coupling of bearing case lid between the front end of compensating beam and the rear end, is provided with the second lug of being connected with construction machinery between first lug and the third lug, and the compensating beam rear end is provided with the fourth lug, and the advantage is: the hoisting gravity center of the bearing box cover is moved outwards to the outside of the flue gas turbine, so that the bearing box cover can be kept horizontally and directly in place without dragging, the construction difficulty is reduced, the manpower is reduced, the working efficiency is improved, the sealing surfaces of the bearing and the bearing box cover and other parts cannot be damaged, the installation quality is improved, and the error of measured data is reduced; in addition, the positions of replacing the counter weights with different weights and adjusting the lifting lugs can meet the requirements of different bearing box covers.
Description
Technical Field
the invention relates to the field of assembling and disassembling of a bearing box cover of a smoke turbine, in particular to a horizontal balancing device and an assembling and disassembling method for assembling and disassembling the bearing box cover of the smoke turbine.
Background
In the petrochemical field, large-scale flue gas turbine is owing to often need overhaul, and the also corresponding needs of its bearing case lid are often opened, and in addition owing to clearance measurement's needs, the bearing case lid also need carry out a lot of dismouting in the maintenance in-process. However, most of the bearing box covers need to enter the interior of the flue gas turbine equipment during installation, the installation space of the inner wall of the shell of the flue gas turbine is in a horizontal semi-conical shape with a narrow interior and a wide exterior, the installation space is small, and the box covers have a dead weight of about 900 kg, so that the box covers cannot be lifted by manpower to be directly in place.
the traditional installation method is as follows: the bearing box cover is provided with a first lifting point and a second lifting point for installation, the vertical chain block is lifted after being directly bound through a steel wire rope, and the bearing box cover is pulled to be in place by the horizontal chain block. However, because the center of gravity of the bearing box cover at the final position of taking place is in the equipment, and because of the limitation of the installation environment, a lifting point cannot be arranged above the center of gravity of the final position of taking place, in order to enable the bearing box cover to be installed smoothly, additional multiple people are required to perform manual operations such as dragging and lifting, the installation space is narrow, and the construction is not easy, so that the method of directly utilizing the inverted chain steel wire rope for lifting and accurately taking place by dragging not only wastes time and labor, but also the bearing box cover cannot be kept in place completely horizontally, the bearing, the sealing surface of the bearing box cover and other parts are easy to damage, and in addition, the.
Disclosure of Invention
in order to solve the defects in the prior art, the invention provides the horizontal balancing device and the dismounting method for dismounting the bearing box cover of the range hood, which can ensure that the bearing box cover keeps a horizontal position to be directly in place without dragging, reduce the construction difficulty, avoid damaging other parts and improve the mounting quality.
The technical scheme adopted by the invention for solving the technical problems is as follows: the horizontal balancing device for the disassembly and assembly of the bearing box cover of the range hood comprises a balancing beam, wherein a detachable balancing weight is arranged at the rear end of the balancing beam, a first lifting lug in shaft connection with a first lifting point of the bearing box cover is arranged at the front end of the balancing beam, a third lifting lug in shaft connection with a second lifting point of the bearing box cover is arranged between the front end of the balancing beam and the rear end of the balancing beam, a second lifting lug connected with construction machinery is arranged between the first lifting lug and the third lifting lug, and a fourth lifting lug is arranged at the rear end of the balancing beam.
In some embodiments, the rear end of the balance beam is provided with an opening, and the balancing weight is hung in the opening.
In some embodiments, the fourth lifting lug is disposed directly above the opening.
In some embodiments, the weight block comprises a hook and a weight block body, the hook is hung in the open hole, and a groove is formed in the bottom of the weight block body. Therefore, the influence on the rear end coupler of the flue gas turbine can be effectively avoided during the mounting and dismounting process of the balance beam.
In some embodiments, the shape of the groove is a regular trapezoid, a semicircle, a square or other symmetrical shape.
A method for disassembling and assembling a bearing box cover of a range hood comprises the following steps: arranging a balance beam, arranging a detachable balancing weight at the rear end of the balance beam, arranging a first lifting lug at the front end of the balance beam, arranging a third lifting lug between the front end and the rear end of the balance beam, arranging a second lifting lug between the first lifting lug and the third lifting lug, and arranging a fourth lifting lug at the rear end of the balance beam,
the disassembly of the bearing box cover is specifically as follows: selecting a proper counterweight block according to the weight of a bearing box cover; secondly, hooking the travelling crane hook and the chain block to a fourth lifting lug, and moving the balance beam to the upper part of the bearing box cover by using the travelling crane; thirdly, slowly descending the balance beam, keeping stable balance in the descending process, after the balance beam contacts the bearing box cover, connecting the first lifting lug with a first lifting point of the bearing box cover in a shaft mode, and connecting the third lifting lug with a second lifting point of the bearing box cover in a shaft mode; fourthly, the crane hook is hung on the second lifting lug, the chain block on the fourth lifting lug is slowly loosened, meanwhile, the crane hook is slowly lifted, whether the bearing box cover is horizontally balanced or not is observed, and the levelness of the bearing box cover is adjusted by increasing or reducing the weight of the balancing weight, so that the bearing box cover is disassembled;
The installation of bearing case lid specifically does: selecting a proper counterweight block according to the weight of a bearing box cover; secondly, the first lifting lug is in shaft connection with the first lifting point, the third lifting lug is in shaft connection with the second lifting point, and the traveling crane hook and the chain block hook are hung on the second lifting lug; and thirdly, the bearing box cover is lifted up slowly by the crane hook, whether the bearing box cover is kept horizontally balanced is observed, the levelness of the bearing box cover is adjusted by increasing or reducing the weight of the balancing weight, the crane hook is moved, and the bearing box cover is conveyed to the upper part of the bearing box of the range hood and the installation is completed.
after the bearing box cover is installed, the travelling crane hook and the chain block hook are hung on the fourth lifting lug from the second lifting lug, and then the balance beam and the balancing weight are detached.
The bearing box cover is provided with a level gauge, and whether the bearing box cover keeps horizontal balance or not is observed through the level gauge.
The rear end of the balance beam is provided with an opening, and the balancing weight is connected into the opening.
compared with the prior art, the invention has the advantages that: by arranging the structure of the balance beam and arranging the detachable counterweight block at the rear end of the balance beam, the hoisting gravity center of the bearing box cover is changed by utilizing the lever principle, so that the hoisting gravity center of the bearing box cover is moved to the outside of the flue gas turbine from the original inside of the flue gas turbine equipment, the bearing box cover can be kept horizontally and directly in place without dragging, the construction difficulty is reduced, the manpower is reduced, the working efficiency is improved, the bearing and the sealing surface of the bearing box cover and other parts cannot be damaged, the mounting quality is improved, and the error of measured data is reduced; in addition, the balancing weight of adjustment lug position and change different weight can adapt to the needs of different bearing case lids.
Drawings
FIG. 1 is a schematic structural view of a balance beam of a horizontal balancing device for mounting a bearing housing cover of a flue gas turbine according to the present invention;
FIG. 2 is a schematic structural diagram of a horizontal balancing device for a bearing box cover installation of a flue gas turbine according to the present invention;
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a schematic view of a method of disassembling a bearing housing cover of a range hood in accordance with the present invention;
FIG. 5 is a schematic diagram of a method for mounting a bearing box cover of a range hood according to the present invention.
The balance beam comprises a balance beam body 1, a balancing weight 2, an opening 3, a first lifting lug 4, a second lifting lug 5, a third lifting lug 6, a bearing box cover 7, a first lifting point 8, a second lifting point 9, a fourth lifting lug 10, a hook 11, a balancing weight body 12, a groove 13 and a flue gas turbine 14.
Detailed Description
The horizontal balancing device for the installation of the bearing box cover of the flue gas turbine is further described in detail with reference to the attached drawings, but the invention is not limited by the details.
as shown in fig. 1-3, a horizontal balancing device for installing a bearing box cover of a flue gas turbine comprises a balance beam 1 and a balancing weight 2, wherein the rear end of the balance beam 1 is provided with an opening 3 for hanging the balancing weight 2. A first lifting lug 4, a second lifting lug 5 and a third lifting lug 6 are sequentially welded on the balance beam 1 from the front end to the rear end. The first lifting lug 4 is arranged on the front side or lower side of the compensating beam 1 and corresponds to the position of the first lifting point 8 on the bearing housing cover 7. The third lifting lug 6 is arranged on the lower side of the balance beam 1 and corresponds to the position of the second lifting point 9 on the bearing box cover 7. The first lifting lug 4 is connected to a first lifting point 8, here a pivot connection, or may be connected in another way. The third lifting lug 6 is connected with the second lifting point 9 through a shaft pin. The second lug 5 sets up at the upside of compensating beam 1 and is located between first lug 4 and the third lug 6, and second lug 5 is connected to outside construction machinery, thereby utilizes driving and chain block to hoist compensating beam 1 through second lug 5 department and hoist bearing case lid 7 and balancing weight 2 to make bearing case lid 7 keep the level. The setting position of the second lifting lug 5 on the balance beam 1 and the weight of the counterweight block 2 are determined according to the weight and length adjustment of different bearing box covers 7, so that the bearing box covers 7 are kept horizontally balanced after being lifted, and the lifting gravity centers of the bearing box covers 7 are ensured to move outwards to the outside of the installation space of the flue gas turbine 14. Wherein, balancing weight 2 is for dismantling, through the needs of balancing weight 2 of changing different weight in order to adapt to different bearing case lids, and simple to operate, strong adaptability. The rear end of compensating beam 1 is provided with fourth lug 10, and fourth lug 10 sets up directly over trompil 3, is convenient for dismantle horizontal balance device after the installation of bearing case lid is accomplished from this, and can not damage other spare parts when dismantling, and is convenient laborsaving.
The balance beam 1 is made of I-shaped steel, and a first lifting lug 4, a second lifting lug 5, a third lifting lug 6 and a fourth lifting lug 10 are made of steel plates. The balance beam 1 is made of materials with enough strength, such as I-steel, channel steel and the like, through strength calculation.
the balance beam 1 is lifted to be in a horizontal position or an inclined position with a lower front end and a higher rear end, preferably, the balance beam 1 is set to have a certain inclination angle according to the characteristic of a conical body in the shell of the flue gas turbine, and the inclination of the balance beam 1 is adapted to the inclination of the inner wall of the shell of the flue gas turbine 14 (the inclination of a semi-cone). Therefore, the balance beam 1 is matched with the installation space in the flue gas turbine 14, so that the bearing box cover 7 has larger operation space in the dismounting process, the dismounting and the positioning of the bearing box cover 7 are convenient, the space is saved, and the efficiency is improved.
The length of the balance beam 1 and the position of the hanging counterweight block 2 can not affect other equipment. Further, the balancing weight 2 comprises a hook 11 and a balancing weight body 12, the hook 11 is hung in the open hole 3, a groove 13 is formed in the bottom of the balancing weight body 12, the groove 13 is in a regular trapezoid shape, a semicircular shape, a square shape or other symmetrical shapes, the influence of a coupler at the rear end of the flue gas turbine can be effectively avoided in the mounting and dismounting processes of the balancing beam 1, the horizontal balancing device is not influenced by other parts when in use, and the applicability is high.
A level (not shown) for measuring the horizontal position of the bottom surface of the bearing housing cover 7 is further provided on the bearing housing cover 7, further ensuring that the bearing housing cover 7 is kept in the horizontal position directly in place.
A method for disassembling and assembling a bearing box cover of a range hood comprises the following steps: set up compensating beam 1, set up detachable balancing weight 2 at the rear end of compensating beam, set up first lug 4 at the front end of compensating beam 1, set up third lug 6 between the front end of compensating beam 1 and rear end, set up second lug 5 between first lug 4 and third lug 6, make second lug 5 be located the outside of 14 installation chambeies of flue gas turbine, set up trompil 3 and fourth lug 10 at the rear end of compensating beam 1. The material of the balance beam 1 is selected according to the weight of the bearing box cover 7, and the length of the balance beam 1 is matched with that of the bearing box cover 7.
As shown in fig. 4 and 5, after the balance beam 1 is manufactured, the disassembly of the bearing box cover 7 specifically includes: selecting a proper counterweight block 2 according to the weight of a bearing box cover 7; secondly, hooking a travelling crane hook and a chain block on a fourth lifting lug 10, and moving the balance beam 1 to the upper part of the bearing box cover 7 by using a travelling crane; thirdly, slowly descending the balance beam 1, keeping stable balance in the descending process, after the balance beam 1 contacts the bearing box cover 7, connecting the first lifting lug 4 with the first lifting point 8 of the bearing box cover 7 in a shaft mode, and connecting the third lifting lug 6 with the second lifting point 9 of the bearing box cover 7 in a shaft mode; and fourthly, the crane hook is hung on the second lifting lug 5, the chain block on the fourth lifting lug 10 is slowly loosened, meanwhile, the crane hook is slowly lifted, whether the bearing box cover 7 keeps horizontal balance is observed, and the levelness of the bearing box cover 7 is adjusted by increasing or reducing the weight of the counterweight block body 12, so that the bearing box cover 7 is detached.
The installation of bearing case lid 7 specifically does: selecting a proper counterweight block 2 according to the weight of a bearing box cover 7; secondly, the first lifting lug 4 is in shaft connection with the first lifting point 8, the third lifting lug 6 is in shaft connection with the second lifting point 9, and the travelling crane hook and the chain block hook are hooked on the second lifting lug 5; and thirdly, the bearing box cover 7 is lifted by the crane hook slowly, whether the bearing box cover 7 keeps horizontal balance is observed, the levelness of the bearing box cover 7 is adjusted by increasing or reducing the weight of the counterweight block body 12, the crane hook is moved, and the bearing box cover 7 is conveyed to the upper part of the bearing box of the range hood and the installation is completed. After the bearing box cover 7 is installed, the travelling crane hook and the chain block hook are hung on the fourth lifting lug 10 from the second lifting lug 5, and then the balance beam 1 and the balancing weight 2 are detached.
The bearing box cover 7 is provided with a level meter, and whether the bearing box cover 7 keeps horizontal balance or not is observed through the level meter. The rear end of the balance beam 1 is provided with an opening 3, and a hook 11 is connected to the opening 3.
it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereby, and the present invention may be modified in materials and structures, or replaced with technical equivalents, in the constructions of the above-mentioned various components. Therefore, structural equivalents made by using the description and drawings of the present invention or by directly or indirectly applying to other related arts are also encompassed within the scope of the present invention.
Claims (6)
1. A horizontal balancing device for disassembling and assembling a bearing box cover of a range hood is characterized by comprising a balance beam, wherein a detachable balancing weight is arranged at the rear end of the balance beam, a first lifting lug in shaft connection with a first lifting point of the bearing box cover is arranged at the front end of the balance beam, a third lifting lug in shaft connection with a second lifting point of the bearing box cover is arranged between the front end and the rear end of the balance beam, a second lifting lug connected with construction machinery is arranged between the first lifting lug and the third lifting lug, and a fourth lifting lug is arranged at the rear end of the balance beam; the balance beam is hung and then is set to be low in front end and high in rear end, and a certain inclination is kept, and the inclination of the balance beam is adapted to the inclination of the inner wall of the shell of the cigarette machine; manufacturing the first lifting lug, the second lifting lug, the third lifting lug and the fourth lifting lug by using steel plates; the rear end of the balance beam is provided with an opening, and the balancing weight is hung in the opening; the balancing weight comprises a hook and a balancing weight body, the hook is hung in the hole, and a groove is formed in the bottom of the balancing weight body.
2. The horizontal balancing device for the lid of a cigarette machine bearing box according to claim 1, wherein the fourth lifting ear is disposed directly above the opening.
3. The horizontal balancing device for the cover of a cigarette machine bearing box according to claim 2, wherein the shape of the groove is a regular trapezoid, a semicircle, a square or other symmetrical shapes.
4. A method for disassembling and assembling a bearing box cover of a range hood is characterized by comprising the following steps: arranging a balance beam, arranging a detachable balancing weight at the rear end of the balance beam, arranging a first lifting lug at the front end of the balance beam, arranging a third lifting lug between the front end and the rear end of the balance beam, arranging a second lifting lug between the first lifting lug and the third lifting lug, and arranging a fourth lifting lug at the rear end of the balance beam,
The disassembly of the bearing box cover is specifically as follows: selecting a proper counterweight block according to the weight of a bearing box cover; secondly, hooking the travelling crane hook and the chain block to a fourth lifting lug, and moving the balance beam to the upper part of the bearing box cover by using the travelling crane; thirdly, slowly descending the balance beam, keeping stable balance in the descending process, after the balance beam contacts the bearing box cover, connecting the first lifting lug with a first lifting point of the bearing box cover in a shaft mode, and connecting the third lifting lug with a second lifting point of the bearing box cover in a shaft mode; fourthly, the crane hook is hung on the second lifting lug, the chain block on the fourth lifting lug is slowly loosened, meanwhile, the crane hook is slowly lifted, whether the bearing box cover is horizontally balanced or not is observed, and the levelness of the bearing box cover is adjusted by increasing or reducing the weight of the balancing weight, so that the bearing box cover is disassembled;
The installation of bearing case lid specifically does: selecting a proper counterweight block according to the weight of a bearing box cover; secondly, the first lifting lug is in shaft connection with the first lifting point, the third lifting lug is in shaft connection with the second lifting point, and the traveling crane hook and the chain block hook are hung on the second lifting lug; slowly lifting the travelling crane hook to lift the bearing box cover, observing whether the bearing box cover is kept horizontally balanced, adjusting the levelness of the bearing box cover by increasing or reducing the weight of the balancing weight, moving the travelling crane hook, conveying the bearing box cover to the upper part of the bearing box of the range hood, and completing installation;
The bearing box cover is provided with a level gauge, and whether the bearing box cover keeps horizontal balance or not is observed through the level gauge.
5. The method for disassembling and assembling the bearing box cover of the cigarette machine according to claim 4, wherein after the bearing box cover is assembled, the traveling crane hook and the chain block hook are hung on the fourth lifting lug from the second lifting lug, and then the balance beam and the balancing weight are disassembled.
6. A method according to claim 4 or 5, wherein the rear end of the balance beam is provided with an opening, and the counterweight is connected to the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710649935.6A CN107337075B (en) | 2017-08-02 | 2017-08-02 | Horizontal balancing device for assembling and disassembling bearing box cover of range hood and assembling and disassembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710649935.6A CN107337075B (en) | 2017-08-02 | 2017-08-02 | Horizontal balancing device for assembling and disassembling bearing box cover of range hood and assembling and disassembling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107337075A CN107337075A (en) | 2017-11-10 |
| CN107337075B true CN107337075B (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710649935.6A Active CN107337075B (en) | 2017-08-02 | 2017-08-02 | Horizontal balancing device for assembling and disassembling bearing box cover of range hood and assembling and disassembling method |
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| CN (1) | CN107337075B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551339B (en) * | 2019-09-25 | 2022-08-16 | 中冶宝钢技术服务有限公司 | Fire cleaning machine vertical distributor dismounting device and dismounting method thereof |
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| CN201046881Y (en) * | 2007-06-15 | 2008-04-16 | 中国第一重型机械集团公司 | Adjustable frame roller changing sling |
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| CN103140430A (en) * | 2010-10-04 | 2013-06-05 | 乌本产权有限公司 | Method for replacing a transformer in a wind energy installation |
| CN207108218U (en) * | 2017-08-02 | 2018-03-16 | 中石化宁波工程有限公司 | A kind of horizontal equilibrium device for the dismounting of cigarette machine bearing case lid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201010421Y (en) * | 2007-01-26 | 2008-01-23 | 广东韶钢松山股份有限公司 | Special hanger for altering oil cylinder |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3675961A (en) * | 1970-06-24 | 1972-07-11 | Charles B Wheeler | Horizontal load positioner |
| CN201046881Y (en) * | 2007-06-15 | 2008-04-16 | 中国第一重型机械集团公司 | Adjustable frame roller changing sling |
| CN201217605Y (en) * | 2008-05-29 | 2009-04-08 | 中冶天工上海十三冶建设有限公司 | Lever-type sling |
| CN103140430A (en) * | 2010-10-04 | 2013-06-05 | 乌本产权有限公司 | Method for replacing a transformer in a wind energy installation |
| CN202744162U (en) * | 2012-02-29 | 2013-02-20 | 南京沃尔德特钢有限公司 | Finished steel tube casing device |
| CN202542677U (en) * | 2012-03-14 | 2012-11-21 | 上海电气核电设备有限公司 | Device for mounting tube bundle supporting plates of evaporator |
| CN207108218U (en) * | 2017-08-02 | 2018-03-16 | 中石化宁波工程有限公司 | A kind of horizontal equilibrium device for the dismounting of cigarette machine bearing case lid |
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| CN107337075A (en) | 2017-11-10 |
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