CN203903794U - Main girder upgrading structure capable of improving rated load lifting capacity of ladle crane in use - Google Patents
Main girder upgrading structure capable of improving rated load lifting capacity of ladle crane in use Download PDFInfo
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- CN203903794U CN203903794U CN201420267455.5U CN201420267455U CN203903794U CN 203903794 U CN203903794 U CN 203903794U CN 201420267455 U CN201420267455 U CN 201420267455U CN 203903794 U CN203903794 U CN 203903794U
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- girder
- lower cover
- web
- main
- rated load
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- 238000010276 construction Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000005192 partition Methods 0.000 abstract 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a main girder upgrading structure capable of improving the rated load lifting capacity of a ladle crane in use, which comprises an auxiliary web, a lower cover board, a partition board, a main web and a main girder, wherein the auxiliary web, the lower cover board, the partition board and the main web are arranged under a main girder lower cover board; the auxiliary web, the lower cover board, the main web and the main girder lower cover board form a box-shaped structure; the partition board is fixedly connected with the lower part of a main girder partition board; the auxiliary web and the main web are respectively and fixedly connected with the lower cover board, the partition board and the main girder lower cover board. According to the main girder upgrading structure, a method of increasing the vertical height of the main girder is adopted to improve the bearing capacity of the main girder. The increased height of the main web and the thickness of the lower cover board are calculated and determined according to required lifting capacity, so that the constant stress of the main girder is kept. According to the main girder upgrading structure, the crane in use in improved, the rated load lifting capacity of the crane is improved, and the investment of fixed assets is reduced.
Description
Technical field
The utility model belongs to weight-lifting equipment technical field, further belongs to metallurgical casting hoisting crane renovation technique field, is specifically related to a kind of simple in structure, construction easily, invest littlely, reliable, can improve in the girder upgrading structure with ladle carne rated load weight.
Background technology
Hoisting crane is the weight-hauling equipment that alleviates heavy manual labor, raising operating efficiency, realizes safety in production.In the material production and logistics of each department of national economy, hoisting crane, as crucial process equipment or important accessory machinery, is applied very extensive.Ladle carne is one of the main production equipments in smelting molten steel workshop, at steelshop, with this hoisting crane, the molten iron shipping from ironmaking workshop is poured into mixed iron blast and is directly poured the molten iron in mixed iron blast into converter.At steelshop, ladle carne is provided with the major and minor dolly of individual drive, and main carriage arranges the gantry hook handling steel ladle of constant spacing, secondary dolly can be used to tumble steel ladle or do other complementary lifting job.Ladle carne of the prior art, its rated load weight is to determine according to the maximum weight of institute's handling in the technological process of production.The service life of ladle carne is longer, and agent structure generally can be used more than 20 years.The speed of development of China's metallurgical industry is very fast, technological advance is very rapid, often need original production technology to transform, modal is in the situation that major equipment is constant, give full play to equipment potential, improve productive capacity, in this case, need to improve the rated load weight of hoisting crane.As the ladle carne of 100/32t is promoted to the casting lifting of 125/32t; The ladle carne of 140/40t is promoted to the ladle carne of 160/40t.In this case, if a new upper ladle carne is invested very large.As a 125/32t ladle carne, price is about 4,500,000 yuan; A 160/40t ladle carne, price is about 5,500,000 yuan.Ladle carne is highly professional, after original ladle carne is eliminated, is difficult to find suitable use occasion, will form huge economic waste.Therefore, at rated load weight, increase (generally increasing by 10～25%) few in the situation that, to carrying out upgrading with hoisting crane, can reduce the investment of enterprise, to enterprise, bring good economic benefit.Crane span structure is the important load bearing component of hoisting crane, and its weight accounts for 50～60% of hoisting crane complete machine deadweight, and girder is the core component of crane span structure, and in the upgrading of hoisting crane, if again make girder, cost is very high.For this reason, research and develop a kind of simple in structurely, construction easily, invest littlely, reliable, and can improve in the structure of upgrading of the girder with ladle carne rated load weight is the key addressing this problem.
Utility model content
It is a kind of simple in structure that the purpose of this utility model is to provide, and construction easily, invest littlely, reliable, can improve in the girder of the use ladle carne rated load weight structure of upgrading.
The purpose of this utility model is achieved in that and comprises that secondary web, lower cover, dividing plate, main web, girder, described secondary web, lower cover, dividing plate, main web are arranged at side under girder lower cover; Described secondary web, lower cover, main web and girder lower cover form box type construction; Described dividing plate is fixed in side under girder dividing plate; Described secondary web, main web are affixed with lower cover, dividing plate, girder lower cover respectively.
The utility model adopts the method that increases girder vertical direction height, improves the load-carrying capacity of girder.The upper cover plate of crane girder bears compression effort, and lower cover bears tensile stress, and the moment of flexure that the size of compression effort, tensile stress produces on girder to crane carriage is directly proportional, and is inversely proportional to the moment of inertia of girder; When hoisting capacity increases, the moment of flexure that crane carriage produces on girder also increases (molecule increase) thereupon, now, can hoisting capacity as required calculate, and determines the height of girder web plate increase and the thickness of lower cover; Increase the vertical direction height of girder, also just increased the moment of inertia (denominator increase) of girder, thereby guarantee compression effort, the tensile stress constant (or being less than or equal to permissible stress) of girder, the quiet rigidity of girder also increases simultaneously, has guaranteed the safe operation of hoisting crane.The utility model, to transforming with hoisting crane, has improved the rated load weight of hoisting crane, has reduced the investment of fixed assets when meeting production technology needs.The utility model is simple in structure, and construction easily, invest littlely, reliable, can effectively improve the rated load weight at use ladle carne.
Accompanying drawing explanation
Fig. 1 is the utility model integral structure schematic diagram;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is the utility model working state schematic representation;
In figure: the secondary web of 1-, 2-lower cover, 3-dividing plate, the main web of 4-, 5-girder, 51-girder lower cover, the main web of 52-girder, the secondary web of the former girder of 53-, 54-girder dividing plate, 6-traveling mechanism of the larger traveller, 7-crane carriage, 8-electrical equipment, 9-crane span structure.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but never in any form the utility model is limited, and any conversion of doing based on the utility model training centre, all falls into the utility model protection domain.
As shown in Figures 1 to 3, the utility model comprises secondary web 1, lower cover 2, and dividing plate 3, main web 4, girder 5, described secondary web 1, lower cover 2, dividing plate 3, main web 4 is arranged at side under girder lower cover 51; Described secondary web 1, lower cover 2, main web 4 form box type construction with girder lower cover 51; Described dividing plate 3 is fixed in side under girder dividing plate 54; Described secondary web 1, main web 4 are affixed with lower cover 2, dividing plate 3, girder lower cover 51 respectively.
Both are highly consistent for described secondary web 1, main web 4, and it is highly 0.1～0.15 times of secondary web 53 height of girder.
Described secondary web 1, the thickness of main web 4 respectively with the consistency of thickness of the secondary web 53 of girder, the main web 52 of girder; Length is consistent with girder lower cover 51 length.
Described secondary web 1, main web 4 are aimed at respectively the position of the secondary web 53 of girder, the main web 52 of girder, and weld with girder lower cover (51).
The width of described lower cover 2, length are consistent with width, the length of girder lower cover 51.
The thickness of described lower cover 2 and the consistency of thickness of girder lower cover 51.
Described dividing plate 3 welds with the correspondence position of girder dividing plate 54
Between described dividing plate 3 and lower cover 2, be free-running fit, its gap is 20～50mm.
The thickness of described dividing plate 3 and the consistency of thickness of girder dividing plate 54.
Described secondary web 1, main web 4 and lower cover 2 welding.
principle of work of the present utility model and working process:
The utility model adopts the method that increases girder vertical direction height, improves the load-carrying capacity of girder.The upper cover plate of crane girder bears compression effort, and lower cover bears tensile stress, and the moment of flexure that the size of compression effort, tensile stress produces on girder to crane carriage is directly proportional, and is inversely proportional to the moment of inertia of girder; When hoisting capacity increases, the moment of flexure that crane carriage produces on girder also increases (molecule increase) thereupon, now, can hoisting capacity as required calculate, and determines the height of girder web plate increase and the thickness of lower cover; Increase the vertical direction height of girder, also just increased the moment of inertia (denominator increase) of girder, thereby guarantee compression effort, the tensile stress constant (or being less than or equal to permissible stress) of girder, the quiet rigidity of girder also increases simultaneously, has guaranteed the safe operation of hoisting crane.The utility model, to transforming with hoisting crane, has improved the rated load weight of hoisting crane, has reduced the investment of fixed assets when meeting production technology needs.
Claims (10)
1. one kind can be improved in the girder upgrading structure with ladle carne rated load weight, comprise secondary web (1), lower cover (2), dividing plate (3), main web (4), girder (5), it is characterized in that: described secondary web (1), lower cover (2), dividing plate (3), main web (4) are arranged at side under girder lower cover (51); Described secondary web (1), lower cover (2), main web (4) form box type construction with girder lower cover (51); Described dividing plate (3) is fixed in side under girder dividing plate (54); Described secondary web (1), main web (4) are affixed with lower cover (2), dividing plate (3), girder lower cover (51) respectively.
2. according to claim 1 can raising used the girder upgrading structure of ladle carne rated load weight, it is characterized in that: both are highly consistent for described secondary web (1), main web (4), and it is highly 0.1～0.15 times of the secondary web of girder (53) height.
3. according to claim 1 can raising in the girder upgrading structure with ladle carne rated load weight, is characterized in that: the thickness of described secondary web (1), main web (4) respectively with the consistency of thickness of the secondary web (53) of girder, the main web of girder (52); Length is consistent with girder lower cover (51) length.
4. according to claim 1 can raising used the girder upgrading structure of ladle carne rated load weight, it is characterized in that: described secondary web (1), main web (4) are aimed at respectively the position of the secondary web (53) of girder, the main web of girder (52), and weld with girder lower cover (51).
5. according to claim 1 can raising in the girder upgrading structure with ladle carne rated load weight, is characterized in that: the width of described lower cover (2), length are consistent with width, the length of girder lower cover (51).
6. according to claim 1 can raising in the girder upgrading structure with ladle carne rated load weight, is characterized in that: the consistency of thickness of the thickness of described lower cover (2) and girder lower cover (51).
7. according to claim 1 can raising in the girder upgrading structure with ladle carne rated load weight, is characterized in that: described dividing plate (3) welds with the correspondence position of girder dividing plate (54).
8. according to claim 1 can raising in the girder upgrading structure with ladle carne rated load weight, is characterized in that: between described dividing plate (3) and lower cover (2), be free-running fit, its gap is 20～50mm.
9. according to claim 1 can raising in the girder upgrading structure with ladle carne rated load weight, is characterized in that: the consistency of thickness of the thickness of described dividing plate (3) and girder dividing plate (54).
10. according to claim 1 can raising in the girder upgrading structure with ladle carne rated load weight, is characterized in that: described secondary web (1), main web (4) and lower cover (2) welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420267455.5U CN203903794U (en) | 2014-05-23 | 2014-05-23 | Main girder upgrading structure capable of improving rated load lifting capacity of ladle crane in use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420267455.5U CN203903794U (en) | 2014-05-23 | 2014-05-23 | Main girder upgrading structure capable of improving rated load lifting capacity of ladle crane in use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203903794U true CN203903794U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420267455.5U Expired - Lifetime CN203903794U (en) | 2014-05-23 | 2014-05-23 | Main girder upgrading structure capable of improving rated load lifting capacity of ladle crane in use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203903794U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382987A (en) * | 2017-12-22 | 2018-08-10 | 李乃斌 | A kind of crane main beam structure configuration of stacking pattern up and down |
| CN111989286A (en) * | 2018-04-18 | 2020-11-24 | 科尼起重机全球公司 | Box girder, in particular crane girder, and crane and method for producing same |
-
2014
- 2014-05-23 CN CN201420267455.5U patent/CN203903794U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382987A (en) * | 2017-12-22 | 2018-08-10 | 李乃斌 | A kind of crane main beam structure configuration of stacking pattern up and down |
| CN111989286A (en) * | 2018-04-18 | 2020-11-24 | 科尼起重机全球公司 | Box girder, in particular crane girder, and crane and method for producing same |
| CN111989286B (en) * | 2018-04-18 | 2022-08-26 | 科尼起重机全球公司 | Box girder, in particular crane girder, and crane and method for producing same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |
|
| CX01 | Expiry of patent term |