CN85202445U - Prestress steel wire winded loading frame - Google Patents
Prestress steel wire winded loading frame Download PDFInfo
- Publication number
- CN85202445U CN85202445U CN198585202445U CN85202445U CN85202445U CN 85202445 U CN85202445 U CN 85202445U CN 198585202445 U CN198585202445 U CN 198585202445U CN 85202445 U CN85202445 U CN 85202445U CN 85202445 U CN85202445 U CN 85202445U
- Authority
- CN
- China
- Prior art keywords
- steel wire
- pretension
- column
- upright post
- frame
- 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.)
- Ceased
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/04—Frames; Guides
- B30B15/042—Prestressed frames
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The utility model relates to a prestressing steel wire winded loading machine frame, which belongs to the field of heavy mechanisms. With a view to make the prestressing steel wire winded loading machine frame support eccentric load on the precondition of not increasing pretension coefficient viz not increasing weight, an upright post two ends are extended into a semicircle joist, and makes a steel wire layer generate acting force for the upright post two ends; therefore, part of the vertical pretension protecting force of the steel wire layer for the machine frame upright post are changed into a level pretension protecting force, and the upright post level thrust generated by eccentric load can be balanced.
Description
Compressor wire twines framework for support and belongs to the heavy-duty machinery field.
The compressor wire winding frame that two companies of Sweden release is widely used in the various hydraulic press of this two companies production, and they enjoy patent protection, see BP 788891, United States Patent (USP) (19) 3783775,3781202,3931728.This kind frame is by last, and second circular beam, column twine pretension through steel wire and form an integral body.Because this frame has only the vertically pretightning force of (axially) direction, the axial pretightening protection can only be provided, thereby only be applicable to frame based on centre-line load.Soviet Union research institute is in order to be applied to above-mentioned frame to bear than large eccentricity load (eccentric load causes that horizontal thrust acts on the framework pillar); take to strengthen the pretension coefficient; promptly come frame pretightening is protected with the vertical pretightning force that is 1.9～2.5 times of service loads; strengthen " integral rigidity " (vertical rigidity that reaches horizontal thrust of opposing) of frame with this; thereby increased the weight of the weight of frame; the waste metal, technical-economic index is bad.
The purpose of this utility model is not increase under the prerequisite of pretension coefficient (thereby not increasing frame weight), improves frame and bears eccentrically loaded ability.
The utility model stretches into the column two ends in the semicircle beam, and makes steel wire floor column two ends produce active force.At this moment steel wire floor is converted into horizontal pretension protection to the part of the vertical pretension protection of framework pillar, but the column horizontal thrust that this horizontal pretension protection balance eccentric load causes.Thereby realized vertical and horizontal both direction while pretension, to bear eccentric load to framework pillar.Horizontal in addition pretension protection and the acting in conjunction of vertical pretension protection can be strengthened " integral rigidity " of frame.
This new frame is owing to there is the pretension protection of vertical and horizontal both direction, thereby is applicable to and bears eccentric load, and has frame now only under the prerequisite that greatly strengthens the pretension coefficient, and existing frame just can be born eccentric load.
The column of this new frame and the weight of steel wire floor are the ratio of its pretension coefficient with the column of existing frame and the ratio of steel wire floor weight, that is:
(W
Post)/(W '
Post)=(W
Silk)/(W '
Silk)=(η)/(η ')
W in the following formula
Post, W
Silk, η is respectively existing framework pillar weight, steel wire floor weight and pretension coefficient.W '
Post, W '
SilkAnd η ' is respectively new frame column weight, steel wire floor weight and pretension coefficient.
Because η '=1.2～1.5
η＝1.9～2.5
So (η)/(η ')=1.58～1.66
37%～40% of column and steel wire weight can be saved, thereby the frame cost can be reduced greatly.
Fig. 1 is the schematic diagram that the utility model one novel compressor wire twines framework for support.(1) for semicircle beam, (2) are columns, (3) are steel wire floors.In the semicircle beam is stretched at the column two ends, and make steel wire floor column two ends produce active force, then the part of the vertical pretension protection of its column is converted into horizontal pretension protection, with balance because the column horizontal thrust (5) that eccentric load causes.And the normal thrust (4) of the vertical pretightning force balance service load of double circular beam of steel wire floor.
Circular arc can be processed in the outside of stretching into the column two ends of semicircle beam among Fig. 1, also can make it become the part of the excircle of semicircle beam.The column two ends are inboard matches with the semicircle beam, and then steel wire floor column two ends can apply the pretension protection.
Under this structure, the column two ends are as the circular arc shaped portion of a semicircle beam excircle part, and its pairing central angle alpha (see figure 1) is relevant with the ratio of normal thrust with eccentrically loaded horizontal thrust.Available following formula calculates:
Vertical pretension relational expression:
K＝η·〔cosα－μ·α·cosα－μ
2（ (π)/2 －cosα－α·sinα）〕 （1）
Horizontal pretension relational expression:
（T
0＋ (Py·c)/(4（1＋c）) ）·〔sinα－μ（cosα＋α·sinα－1）〕
＝K
1·〔ξ· (Py·e)/(2H) ＋tgα·（Ny－ (Py)/(4（1＋c）) ）〕 （2）
Selected K value (being generally 1.1～1.2), μ and α value then can solve the η value by (1) formula.
T again
0=(Py)/(i) η
Obtain T
0After, known Py, C, ξ, H, e can obtain K by (2) formula
1, if K
1＞2, then pretension designs successfully.
More than various in:
Py is a nominal operation load
μ is at the bottom of the steel wire floor and the coefficient of friction between the semicircle beam, gets 0.2.
Ny is make a concerted effort (on the root post) of semicircle beam column end face pressure at right angle
K is for throwing off pretension coefficient, each stud end surface pressure sum and service load when being pretension
Ratio, K=(Nyi)/(Py) (i is the framework pillar radical)
E is eccentrically loaded eccentric throw, is provided by design sheets
H is moving depth of beam
The coefficient that ξ is relevant with the moved cross beam structure
T
0It is the total pulling force on the pretension state steel wire floor on the root post
C is steel wire floor and column tension and compression ratio of rigidity
K
1Be horizontal pretension coefficient
Alpha levels pretension angle
The total pretension coefficient of η frame
If we get vertical load is 1.8 ten thousand tons, horizontal load is 0.1028 ten thousand tons, can determine that according to horizontal load allowable offset is as follows apart from structure dependent parameters such as e:
e＝286.3mm，H＝2000mm，
ξ=0.798, C=0.2614, ten thousand tons of Py=1.8
Get K=1.28, then
Ny=(KPy)/4 (mill, Shuangpai County frame i=4)
=0.5757 ten thousand ton
If μ=0.2, α=20 ° i.e. 0.349 radian
Can obtain η=1.5 by (1) formula,
T then
0Ten thousand tons of=(η Py)/4=0.675
With above-mentioned parameter substitution (2) formula
Can obtain K
1=2.491＞2
Design successfully.
Claims (2)
1, a kind of compressor wire that is made of semicircle beam, column, steel wire floor twines framework for support, it is characterized in that making steel wire floor that the column that its two ends produce active force is stretched in the semicircle beam.
2, by the said frame of claim 1, it is characterized in that the column two ends lateral surface that stretches in the semicircle beam is a circular arc, and as the some of semicircle beam excircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585202445U CN85202445U (en) | 1985-06-25 | 1985-06-25 | Prestress steel wire winded loading frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585202445U CN85202445U (en) | 1985-06-25 | 1985-06-25 | Prestress steel wire winded loading frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85202445U true CN85202445U (en) | 1986-06-11 |
Family
ID=4798249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198585202445U Ceased CN85202445U (en) | 1985-06-25 | 1985-06-25 | Prestress steel wire winded loading frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85202445U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386157C (en) * | 2005-09-06 | 2008-05-07 | 清华大学 | A closed three-bar bearing frame |
| CN101982251A (en) * | 2010-09-09 | 2011-03-02 | 清华大学 | Multidirectional load bearing prestressed wire winding pre-tightening frame |
| CN102909553A (en) * | 2012-11-14 | 2013-02-06 | 中冶天工集团有限公司 | Method for assembling rack for oversize multifunctional presses |
| CN102963780A (en) * | 2012-11-14 | 2013-03-13 | 中冶天工集团有限公司 | Winding method for single-body rack arch of prestressed heavy-duty die forging press |
| CN108297477A (en) * | 2018-03-18 | 2018-07-20 | 董祥义 | Press support construction |
| CN109262803A (en) * | 2018-09-29 | 2019-01-25 | 佛山市恒力泰机械有限公司 | A kind of prestress steel wire winding frame and ceramic press |
| CN114799012A (en) * | 2022-04-29 | 2022-07-29 | 中国重型机械研究院股份公司 | Prestressed pipe end upsetter |
-
1985
- 1985-06-25 CN CN198585202445U patent/CN85202445U/en not_active Ceased
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386157C (en) * | 2005-09-06 | 2008-05-07 | 清华大学 | A closed three-bar bearing frame |
| CN101982251A (en) * | 2010-09-09 | 2011-03-02 | 清华大学 | Multidirectional load bearing prestressed wire winding pre-tightening frame |
| CN101982251B (en) * | 2010-09-09 | 2013-01-16 | 清华大学 | Multidirectional load bearing prestressed wire winding pre-tightening frame |
| CN102909553A (en) * | 2012-11-14 | 2013-02-06 | 中冶天工集团有限公司 | Method for assembling rack for oversize multifunctional presses |
| CN102963780A (en) * | 2012-11-14 | 2013-03-13 | 中冶天工集团有限公司 | Winding method for single-body rack arch of prestressed heavy-duty die forging press |
| CN102909553B (en) * | 2012-11-14 | 2014-12-31 | 中冶天工集团有限公司 | Method for assembling rack for oversize multifunctional presses |
| CN102963780B (en) * | 2012-11-14 | 2016-01-20 | 中冶天工集团有限公司 | Prestress heavy drop press monomer framework memorial archway winding method |
| CN108297477A (en) * | 2018-03-18 | 2018-07-20 | 董祥义 | Press support construction |
| CN108297477B (en) * | 2018-03-18 | 2024-03-08 | 宁波德玛智能机械有限公司 | Press supporting structure |
| CN109262803A (en) * | 2018-09-29 | 2019-01-25 | 佛山市恒力泰机械有限公司 | A kind of prestress steel wire winding frame and ceramic press |
| CN114799012A (en) * | 2022-04-29 | 2022-07-29 | 中国重型机械研究院股份公司 | Prestressed pipe end upsetter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |