CN201463580U - Lifting device - Google Patents
Lifting device Download PDFInfo
- Publication number
- CN201463580U CN201463580U CN2009201285313U CN200920128531U CN201463580U CN 201463580 U CN201463580 U CN 201463580U CN 2009201285313 U CN2009201285313 U CN 2009201285313U CN 200920128531 U CN200920128531 U CN 200920128531U CN 201463580 U CN201463580 U CN 201463580U
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- China
- Prior art keywords
- lifting device
- bell
- fixed
- gusset piece
- limit switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a lifting device. The lifting device, which is a three-point suspended lifting device, comprises three identical lifting units fixed on the cover of a ladle refining furnace, wherein the lifting units are formed in such a way that the lifting units are uniformly distributed on the furnace cover and each two lifting units forms an angle of 120 degrees .When the furnace cover of the ladle refining furnace is lifted, the weight of the furnace cover is shared by the three lifting units, the force is balanced, and the overturning moment of each lifting unit is reduced, thereby lowering the requirement on the performance of corresponding materials and reducing the production cost and manufacture difficulty.
Description
Technical field
The utility model relates to a kind of lifting device that is used to promote the ladle refining furnace bell.
Background technology
When the bell of ladle refining furnace needs lifting, normally realize by the bell lifting device.Existing ladle refining furnace bell lifting device is generally the single armed hoisting type, its structure mainly comprises column, foundation of civil work, plunger-type cylinder, crossbeam, bell hitch, bearing pin and the two groups of directive wheels that are provided with limit switch, wherein, column connects with foundation of civil work, the plunger base of plunger-type cylinder connects with column, the top of cylinder barrel is fixed on the crossbeam, and the bell hitch is fixed on the crossbeam by bearing pin, and two groups of directive wheels are installed in the upper surface and the lower surface of bell hitch respectively.Mainly there is following shortcoming in this bell lifting device:
(1) load of bell is born by column fully, because the diameter of bell is very big, so column also will bear very big tilting moment, thereby cause the stress of column very big, thereby cause the steel plate of the main stress surface of column thicker, material performance requirement is very high, manufacturing process complexity, difficulty, production cost height;
(2) foundation of civil work is subjected to the influence of column, and its tilting moment that bears is also very big, so require very high to the performance rate of anchor bolt;
(3) above-mentioned plunger-type cylinder is installed on the inside of column, and installation, hydraulic cylinder pipe arrangement and maintenance are all very inconvenient;
(4) because the equipment on the ladle refining furnace is numerous, inevitably there is eccentric phenomena, though be arranged at the off-centre that the directive wheel on the bell hitch can be regulated bell, because the tilting moment of its generation is excessive, so adjusting off-centre is very difficult.
The utility model content
At above-mentioned deficiency, the utility model provides a kind of lifting device that is used to promote the ladle refining furnace bell, and load and tilting moment that this lifting device not only can make column and foundation of civil work bear reduce, and its installation and use are also very convenient.
The purpose of this utility model is achieved through the following technical solutions: a kind of lifting device, this lifting device are three-point suspension formula lifting device, and it comprises the identical lift unit that is fixed in more than three covers on the ladle refining furnace bell; This lift unit comprises the base and the gusset piece A that are arranged on the foundation of civil work, be fixed in support, hydraulic cylinder, connector, limit switch A, the limit switch B of described base top, be fitted with chain and be fixed in sprocket wheel (also can be the structures such as rope sheave that are fitted with steel wire rope), pull bar, gusset piece B on the described support; Wherein, the head of described hydraulic cylinder connects with an end of described chain by described connector, and its afterbody connects with described gusset piece A; The upper end of described pull bar connects with the other end of this chain, and the lower end is fixed on the bell by described bearing pin C and described gusset piece B; Described limit switch A is installed on the described base; Described limit switch B is installed on the described support and is positioned at the top of described limit switch A.
In order to make this lifting device steady in the process motion of lifting bell, the load that stressed member is born is even, and above-mentioned lift unit is three covers, and its perfect condition is for being distributed on the ladle refining furnace bell, and be 120 ° of angles in twos, its final angle is relevant with Facility Layout; Certainly, this lift unit also can be quadruplet or more, and its relative position can be set as the case may be.
Described sprocket wheel is two, and its level height equates, thereby described chain is more conducive to the transmission of power by two sprocket wheel commutations; Described sprocket wheel also can be more than three or three, and its position can be set as the case may be.
The head of described hydraulic cylinder connects with described connector by ball pivot earrings and bearing pin A, thus the error can satisfy hydraulic cylinder installation and use the time; Its afterbody connects with described gusset piece A by bearing pin B.
This lift unit also has additional safety device; One end of described safety device is fixed on the described base by described bearing pin D, and the other end is fixed on the bell by bearing pin D, the potential safety hazard of bringing to prevent described chain from rupturing when working.
Described gusset piece B and bell are fixed as good with welding; Can certainly adopt the riveted joint or with connecting modes such as bolting.
The beneficial effects of the utility model are:
(1) the utility model is a three-point suspension formula lifting device, it adopts three covers to be distributed in the lift unit that also is 120 ° on the bell in twos and combines, therefore in the process of lifting ladle refining furnace bell, the weight of bell is born jointly by this three covers lift unit, stress equalization, reduced to act on the tilting moment of every cover lift unit simultaneously, thereby reduced performance requirement, reduced production costs simultaneously and manufacture difficulty respective material.
(2) owing to above-mentioned tilting moment is born jointly by three cover lift units, therefore act on also corresponding the reducing of tilting moment of foundation of civil work, improved the stress condition of foundation of civil work, thereby reduced performance rate requirement, further saved production cost anchor bolt.
(3) plunger-type cylinder is non-enclosed installation in the utility model, and its surrounding space is open, thus its installation and the maintenance all very convenient.
(4) length by adjusting yoke just can make bell guarantee horizontal level in the utility model, thereby is convenient to regulate the eccentric phenomena of bell.
Description of drawings
Fig. 1 is the vertical view after the assembling of lifting device and ladle refining furnace bell among the utility model embodiment 1.
Fig. 2 be among Fig. 1 A-A to non-limitation view.
Fig. 3 is the partial enlarged drawing of I among Fig. 2.
Fig. 4 is the partial enlarged drawing of II among Fig. 2.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but therefore the utility model is not limited among the following concrete mode.
Embodiment 1: as Fig. 1～shown in Figure 4, a kind of lifting device, this lifting device are three-point suspension formula lifting device, and it comprises that three covers are fixed in the identical lift unit on the ladle refining furnace bell; This lift unit is arranged at base 11 and the gusset piece A1 on the foundation of civil work, the support 10 that is fixed in described base 11 tops, hydraulic cylinder 3, connector 6, limit switch A5, limit switch B7, be fitted with chain 9 and be fixed in sprocket wheel 8, pull bar 12, gusset piece B14 on the described support 10; Wherein, the head of described hydraulic cylinder 3 connects with an end of described chain 9 by described connector 6, and its afterbody connects with described gusset piece A1; The upper end of described pull bar 12 connects with the other end of this chain 9, and the lower end is fixed on the bell by described bearing pin C17 and described gusset piece B14; Described limit switch A5 is installed on the described base 11; Described limit switch B7 is installed on the described support 10 and is positioned at the top of described limit switch A5; The lift unit of this lifting device is distributed on the ladle refining furnace bell, and is 120 ° of angles in twos; Described sprocket wheel 8 is two, and its level height equates; The head of described hydraulic cylinder 3 connects with described connector 6 by ball pivot earrings 4 and bearing pin A15; Its afterbody connects with described gusset piece A1 by bearing pin B2; This lift unit also has additional safety device 13; One end of described safety device 13 is fixed on the described base 11, and the other end is fixed on the bell; Described safety device 13 is fixed on described base 11 and the bell by bearing pin D16 respectively; Described gusset piece B14 and bell welding are fixing.
When the bell of ladle refining furnace need promote, hydraulic system is to the rod chamber fuel feeding of described hydraulic cylinder 3, the piston rod of described hydraulic cylinder 3 is moved downward, thereby driving described chain 9 moves downward with the piston rod of described hydraulic cylinder 3, until described limit switch A5 sender, hydraulic system is quit work, thereby realize the lifting of ladle refining furnace bell.
When the bell of ladle refining furnace need descend, hydraulic system is to the rodless cavity fuel feeding of described hydraulic cylinder 3, the piston rod of described hydraulic cylinder 3 is moved upward, thereby driving described chain 9 moves upward with the piston rod of described hydraulic cylinder 3, until described limit switch B7 sender, hydraulic system is quit work, thereby realize the decline of ladle refining furnace bell.
Claims (7)
1. lifting device, it is characterized in that: this lifting device is a three-point suspension formula lifting device, it comprises the identical lift unit that is fixed in more than three covers on the ladle refining furnace bell;
Above-mentioned lift unit comprises the base (11) and the gusset piece A (1) that are arranged on the foundation of civil work, be fixed in support (10), hydraulic cylinder (3), connector (6), limit switch A (5), the limit switch B (7) of described base (11) top, be fitted with chain (9) and be fixed in sprocket wheel (8), pull bar (12), gusset piece B (14) on the described support (10); Wherein, the head of described hydraulic cylinder (3) connects with an end of described chain (9) by described connector (6), and its afterbody connects with described gusset piece A (1); The upper end of described pull bar (12) connects with the other end of this chain (9), and the lower end is fixed on the bell by bearing pin C (17) and described gusset piece B (14); Described limit switch A (5) is installed on the described base (11); Described limit switch B (7) is installed on the top that described limit switch A (5) was gone up and be positioned to described support (10).
2. lifting device as claimed in claim 1 is characterized in that: the lift unit of this lifting device is three covers, and it is distributed on the ladle refining furnace bell, and is 120 ° of angles in twos.
3. lifting device as claimed in claim 1 or 2 is characterized in that: described sprocket wheel (8) is two, and its level height equates.
4. lifting device as claimed in claim 1 or 2 is characterized in that: the head of described hydraulic cylinder (3) connects with described connector (6) by ball pivot earrings (4) and bearing pin A (15); Its afterbody connects with described gusset piece A (1) by bearing pin B (2).
5. lifting device as claimed in claim 4 is characterized in that: this lift unit also has additional safety device (13); One end of described safety device (13) is fixed on the described base (11), and the other end is fixed on the bell.
6. lifting device as claimed in claim 5 is characterized in that: the two ends of described safety device (13) are fixed on described base (11) and the bell by bearing pin D (16) respectively.
7. lifting device as claimed in claim 6 is characterized in that: described gusset piece B (14) is fixing with the bell welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201285313U CN201463580U (en) | 2009-08-19 | 2009-08-19 | Lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201285313U CN201463580U (en) | 2009-08-19 | 2009-08-19 | Lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201463580U true CN201463580U (en) | 2010-05-12 |
Family
ID=42390931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201285313U Expired - Fee Related CN201463580U (en) | 2009-08-19 | 2009-08-19 | Lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201463580U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185458A (en) * | 2011-12-28 | 2013-07-03 | 北大方正集团有限公司 | Steelmaking electric furnace and furnace cover lifting device thereof |
| CN103398041A (en) * | 2013-07-03 | 2013-11-20 | 宁夏鹏程致远自动化技术有限公司 | Hydraulic oil cylinder reversing device |
| CN105861779A (en) * | 2016-06-06 | 2016-08-17 | 山东钢铁股份有限公司 | Overturn-preventing device for water cooled cover and lifting stand column of ladle refining furnace |
| CN107752755A (en) * | 2017-10-13 | 2018-03-06 | 王丽 | Automatically face equipment is boiled |
| CN109650297A (en) * | 2017-10-10 | 2019-04-19 | 中冶宝钢技术服务有限公司 | LF furnace bell replacing options |
-
2009
- 2009-08-19 CN CN2009201285313U patent/CN201463580U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185458A (en) * | 2011-12-28 | 2013-07-03 | 北大方正集团有限公司 | Steelmaking electric furnace and furnace cover lifting device thereof |
| CN103185458B (en) * | 2011-12-28 | 2015-11-18 | 北大方正集团有限公司 | A kind of steel-smelting electric furnace and furnace cover lifting device thereof |
| CN103398041A (en) * | 2013-07-03 | 2013-11-20 | 宁夏鹏程致远自动化技术有限公司 | Hydraulic oil cylinder reversing device |
| CN105861779A (en) * | 2016-06-06 | 2016-08-17 | 山东钢铁股份有限公司 | Overturn-preventing device for water cooled cover and lifting stand column of ladle refining furnace |
| CN105861779B (en) * | 2016-06-06 | 2018-03-27 | 山东钢铁股份有限公司 | The Overthrow preventing device of Water-cooling furnace cover of ladle refining furnace and lifting column |
| CN109650297A (en) * | 2017-10-10 | 2019-04-19 | 中冶宝钢技术服务有限公司 | LF furnace bell replacing options |
| CN109650297B (en) * | 2017-10-10 | 2020-11-20 | 中冶宝钢技术服务有限公司 | Method for replacing furnace cover of LF (ladle furnace) |
| CN107752755A (en) * | 2017-10-13 | 2018-03-06 | 王丽 | Automatically face equipment is boiled |
| CN107752755B (en) * | 2017-10-13 | 2021-05-11 | 王丽 | Automatic noodle cooking equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20150819 |
|
| EXPY | Termination of patent right or utility model |