CN101468327A - Design method of large-sized grinding mill barrel split flange draw bail - Google Patents
Design method of large-sized grinding mill barrel split flange draw bail Download PDFInfo
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- CN101468327A CN101468327A CNA2007103048799A CN200710304879A CN101468327A CN 101468327 A CN101468327 A CN 101468327A CN A2007103048799 A CNA2007103048799 A CN A2007103048799A CN 200710304879 A CN200710304879 A CN 200710304879A CN 101468327 A CN101468327 A CN 101468327A
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- cylindrical shell
- cylinder
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Abstract
The invention provides a method for designing a split-half flange connection structure for large-sized mill cylinders, which is characterized in that an entire section of cylinder is divided into two symmetrical semi-cylinders; cylinder flanges (3) uniform with the section of the semi-cylinders are welded to the side of the section of a semi-cylinder (1) along the section direction; the cylinder flanges are provided with a plurality of through holes used for connection in advance; end flanges (2) matched with the outer diameter of the cylinder are subjected to whole-circle casting and whole-circle machining; a small semicircular end flange with needed configuration is cut according to the radius of the semi-cylinder machined in advance, wherein the support height of the cylinder flanges at two ends is deducted from the radius; two ends of the small semicircular end flange are provided with welding grooves, sleeved on the ends of the semi-cylinders and then welded together with the cylinder flanges; the end flanges are also provided with a plurality of through holes used for connection in advance; the two semi-cylinders can be fastened to be an entire section of cylinder through the through holes reserved on the cylinder flanges; and a plurality of entire sections of cylinders can be fastened to be a needed integral cylinder through the end flanges. The strength and rigidity of both the entire section of cylinder and the integral cylinder accord with finite element design.
Description
Technical field
The invention belongs to the mining machinery technical field, specially refer to the method for designing of the blue draw bail of a kind of large-sized grinding mill barrel bisection method.
Background technology
Be accompanied by high speed development of national economy, rapid growth also appears in domestic large-scale metal mine industry thereupon, and develops towards the direction that maximizes, particularly some efficient, energy-conservation preparation equipments, market demand is very big, and the upgrading of large-scale grinding attachment is in the ascendant.
Develop large-scale energy-efficient preparation equipment technology and meet the industrial policy that country greatly develops new and high technology, environmental protection and makes rational use of resources, the research and development of this technology successfully will change the present situation at this industry maximization dependence overseas equipment, and will drive the technological progress and the level raising of domestic large-scale metal mine and refractory ore treatment process.
Along with the development of grinding machine maximization and process equipment, transportation more and more becomes restraining factors.Large-scale semi-autogenous mill is particularly special, and transportation in on-the-spot installation of user for convenience and the way usually needs grinding mill barrel is disintegrated, and the appearance and size after the disintegration must be controlled at reasonable range.But the cylindrical shell that disintegrates has increased manufacturing cost greatly.How to obtain suitable disintegration version and processing method under the function of use that guarantees grinding machine and the prerequisite in life-span, in the hope of obtaining maximum profit, be the common objective of world large-sized grinder manufacturing company.
Summary of the invention
At the problems referred to above, the present invention proposes the method for designing of the blue draw bail of a kind of large-sized grinding mill barrel bisection method, this method for designing is carried out intensity, stiffness analysis by modern Design such as finite elements, in conjunction with manufacturing means and condition, value engineering and optimal design theory are optimized design, divide at grinding mill barrel and to innovate aspect the half hitch configuration formula, make the blue draw bail of designed bisection method have comparatively particular structure characteristics and simple and feasible processing characteristics and production technology performance.
For achieving the above object, the present invention has adopted following technical scheme:
The method for designing of the blue draw bail of described large-sized grinding mill barrel bisection method is two and half cylindrical shells that earlier whole section cylindrical shell are separated into symmetry, prolong the other welding of split surface and the consistent shell flange of half cylindrical shell length of half cylindrical shell length direction again, shell flange is reserved with several through holes that is used to connect; To process with the casting of end flanges full circle, the full circle of cylindrical shell external diameter coupling, cut the not a half nose circle flange of required configuration according to the half cylindrical shell radius deduction two ends shell flange bearing height that formerly processes again, with not a half nose circle flange two ends bevelling, be enclosed within each end of half cylindrical shell then and weld together in shell flange, end flanges also is reserved with several through holes that is used to connect; The through hole of reserving by shell flange can with two and half cylindrical shells fastening be a whole section cylindrical shell, again by end flanges can with several whole section cylindrical shell fastening be needed whole cylindrical shell; No matter be whole section cylindrical shell or whole cylindrical shell, its intensity, rigidity all meet the finite element design.
Because adopt aforesaid technical scheme, the present invention has following superiority:
1, is applicable to large-sized grinder two halves, 4 half and even six false add worker forms;
2, efficiently solve full circle casting, the processing problems of end flanges, after completion of processing, can cut according to actual needs, bevelling;
3, avoid the bevel problem of cylindrical shell connecting flange, can after the cylindrical shell welding is finished, carry out integral body processing;
4, simple in structure, process operation is convenient, the processing problems that can avoid the cylindrical shell machining deformation to bring;
5,, can satisfy stress, distortion needs in the actual use fully through finite element analysis.
Description of drawings
Fig. 1 is the blue draw bail schematic diagram of grinding mill barrel bisection method of the present invention;
Fig. 2 is Fig. 1 left view;
Among Fig. 1,2: 1-half cylindrical shell; 2-end flanges; 3-shell flange.
The specific embodiment
As shown in Figure 1: the method for designing of the blue draw bail of large-sized grinding mill barrel bisection method of the present invention is two and half cylindrical shells (1) that earlier whole section cylindrical shell are separated into symmetry, prolong the other welding of the split surface shell flange (3) consistent with half cylindrical shell (1) length of half cylindrical shell (1) length direction again, shell flange (3) is reserved with the through hole that several are used to connect; To process with the casting of end flanges (2) full circle, the full circle of cylindrical shell external diameter coupling, cut the not a half nose circle flange (2) of required configuration according to half cylindrical shell (1) radius deduction two ends shell flanges (3) bearing height that formerly processes again, with not a half nose circle flange (2) two ends bevelling, be enclosed within each end of half cylindrical shell (1) then and weld together in shell flange (3), end flanges (2) also is reserved with the through hole that several are used to connect; The through hole of being reserved by shell flange (3) can with two and half cylindrical shells (1) fastening be a whole section cylindrical shell, again by end flanges (2) can with several whole section cylindrical shell fastening be needed whole cylindrical shell; No matter be whole section cylindrical shell or whole cylindrical shell, its intensity, rigidity all meet the finite element design.
Method for designing of the present invention has production technology performance preferably, can effectively reduce blank, processing charges, blank during casting, and distortion, correction expense in the processing are effectively avoided in the processing that once is installed, and save the process-cycle.The wooden model cast form reduces the moulding time, improves welding procedure, the auxiliary materials of technology when reducing welding; Avoid distortion, correction expense in the processing, save the process-cycle, improve workpiece processing dimension uniformity.
The present invention does not limit to the above embodiment that says, can be used for the design of 4 half, 6 half flange draw bails of grinding mill barrel equally.
Claims (1)
1, the method for designing of the blue draw bail of a kind of large-sized grinding mill barrel bisection method, it is characterized in that: this method for designing is two and half cylindrical shells (1) that earlier whole section cylindrical shell are separated into symmetry, prolong the other welding of the split surface shell flange (3) consistent with half cylindrical shell (1) length of half cylindrical shell (1) length direction again, shell flange (3) is reserved with the through hole that several are used to connect; To process with the casting of end flanges (2) full circle, the full circle of cylindrical shell external diameter coupling, cut the not a half nose circle flange (2) of required configuration according to half cylindrical shell (1) radius deduction two ends shell flanges (3) bearing height that formerly processes again, with not a half nose circle flange (2) two ends bevelling, be enclosed within each end of half cylindrical shell (1) then and weld together in shell flange (3), end flanges (2) also is reserved with the through hole that several are used to connect; The through hole of being reserved by shell flange (3) can with two and half cylindrical shells (1) fastening be a whole section cylindrical shell, again by end flanges (2) can with several whole section cylindrical shell fastening be needed whole cylindrical shell; No matter be whole section cylindrical shell or whole cylindrical shell, its intensity, rigidity all meet the finite element design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103048799A CN101468327A (en) | 2007-12-29 | 2007-12-29 | Design method of large-sized grinding mill barrel split flange draw bail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103048799A CN101468327A (en) | 2007-12-29 | 2007-12-29 | Design method of large-sized grinding mill barrel split flange draw bail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101468327A true CN101468327A (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007103048799A Pending CN101468327A (en) | 2007-12-29 | 2007-12-29 | Design method of large-sized grinding mill barrel split flange draw bail |
Country Status (1)
| Country | Link |
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| CN (1) | CN101468327A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166704A (en) * | 2011-01-20 | 2011-08-31 | 中信重工机械股份有限公司 | Manufacturing method of grinder flange by bending, forming and splice welding n steel plate bar stock |
| CN111715986A (en) * | 2020-07-21 | 2020-09-29 | 郑州九冶三维化工机械有限公司 | Manufacturing method of large-diameter thick-wall flange cylinder |
-
2007
- 2007-12-29 CN CNA2007103048799A patent/CN101468327A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166704A (en) * | 2011-01-20 | 2011-08-31 | 中信重工机械股份有限公司 | Manufacturing method of grinder flange by bending, forming and splice welding n steel plate bar stock |
| CN102166704B (en) * | 2011-01-20 | 2012-08-29 | 中信重工机械股份有限公司 | Manufacturing method of grinder flange by bending, forming and splice welding n steel plate bar stock |
| CN111715986A (en) * | 2020-07-21 | 2020-09-29 | 郑州九冶三维化工机械有限公司 | Manufacturing method of large-diameter thick-wall flange cylinder |
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Open date: 20090701 |