CN1736625A - Closed type three poles framework for support - Google Patents
Closed type three poles framework for support Download PDFInfo
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- CN1736625A CN1736625A CN 200510098583 CN200510098583A CN1736625A CN 1736625 A CN1736625 A CN 1736625A CN 200510098583 CN200510098583 CN 200510098583 CN 200510098583 A CN200510098583 A CN 200510098583A CN 1736625 A CN1736625 A CN 1736625A
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Abstract
Disclosed is an enclosed type three-member load frame, which comprises an inderbeam and two columns of unparalleled axis, the three columns connecting by prestressed linkage and non-prestressed linkage. The three-member load frame has a plural of derivative types, such as axis partial parallelism, arc column type, arc beam type, and their composite type. The three-member load frame has a small space in the upper and a large space in the lower, having a high availability ratio of space in the situation that space required for producing parts by pressure is much less than the mould space of material, and especially suit for a broad field, such as free hammer press frame, sheet drawn forming press frame, and so on.
Description
Technical field
The invention belongs to employed load bearing equipment in the industrial circles such as weight equipment, heavy-duty machinery, particularly a kind of closed framework for support.
Background technology
Indication closed frame structure of the present invention is the enclosed framework for support, and it is the framework for support that is used for rolling mill framework for support, punching machine frame, friction press frame, hydraulic press frame, counter-blow hammer frame and electric screw hammer frame or the like.Since the industrial revolution of 19th century, all enclosed framework for support all can be reduced to the structure of being made up of four rod members, as shown in Figure 1.Vertical member is called post, and horizontal bars is called beam, total Liang Liang and two posts.The load of bearing on the beam column can be similar to load p and the moment M that is reduced to the vertical member axis, and some can be zero P on four rod members and M.This kind enclosed framework for support, the characteristics on the structure are that the axis (centre of form line) of two posts is straight line and parallel, and the span of two beams (upper and lower beam) equates, and it is parallel to each other, in addition, framework for support all has vertical axis of symmetry V-V ', also has horizontal symmetry axis H-H ' (as shown in Figure 2) sometimes.
The frame that this kind four rod members are formed can be described as four leverage closed frames (being called for short four bar frames).Several four bars frame superpositions can also be got up on the engineering, form the frame of wide-bed-type press brake face, as shown in Figure 3.Upper and lower beam merges the upper and lower beam that forms the wide-bed-type press brake face respectively behind the superposition, as two four bar frame superpositions, just forms most typical four post closed frames, as shown in Figure 4.Over nearly more than 200 years, the used various carrying closed frames of every profession and trade all are four bar frames and their combination superposition structure.
The shortcoming of four bar frame maximums is effectively to utilize the space, and stock utilization is low.The tube press that rises as shown in Figure 5, because required pressure is little, such press only has a working cylinder to be bearing on the upper beam; The underbeam upper space is the mould installing space, because the expanding die volume is very big, so the underbeam size is bigger, because four column axis are parallel, upper and lower beam span equates, also is forced to design very hugely so put the beams in place, as shown in Figure 5.The function of putting the beams in place is the load of bearing from hydraulic cylinder, and their (power and moment) is reached column.Upper beam should be designed to the very little beam of span (shown in Fig. 5 dotted line), but is subjected to the constraint of four post closed frame structures, has to its span is drawn back, and is the same with underbeam big, forms very big waste (A, B are idle space).And for example free forging hydraulic machine forges part and requires huge space, and when adopting higher medium (oil, water etc.) operating pressure, can be designed to a cylinder fully, and not require very big space.As 6000 tons of open die forging hydraulic presses of single cylinder, the medium operating pressure is 390kgf/cm
2The time, its master cylinder external diameter can be designed to Φ 1.7m, needs 4.6m and forge bulk, and the latter is the former 3 times, as shown in Figure 6.Press the master cylinder design and put the beams in place, its span 1.75m gets final product, but as putting the beams in place by forging the space requirement design, its span should be 4.6m at least.The span value has determined depth of beam, weight and processing, transportation and installation cost, thereby very unreasonable, causes huge waste.
Various framework for support produce the parts requisite space of pressure less than installation mold and material forming requisite space, and this makes four leverage frames be unsuitable for many operating modes, particularly the framework for support of the little tonnage press of wide-bed-type press brake face.Four post framework pillar axis are parallel, and the irrationality of design feature in many wide-bed-type press brake face frames that upper and lower beam span equates is along with the raising (master cylinder quantity reduces, and the master cylinder external diameter reduces) of working cylinder pressure medium is more and more obvious.
Summary of the invention
The objective of the invention is deficiency and defective, a kind of space availability ratio that improves framework for support is provided, reduce the machine volume, alleviate machine weight, the closed type three poles framework for support that cuts down finished cost at existing four leverage closed frames existence.
Above-mentioned purpose of the present invention is achieved by the following technical solution:
A kind of closed type three poles framework for support, it is characterized in that: this framework for support adopts three rod member closed type structures, this three rod members closed type structure is made up of a underbeam and two uneven posts of axis, and the connection between three bars adopts the connection of prestressing force leverage to be connected with non-prestressed leverage.
Prestressing force leverage of the present invention connect comprise hinged, being rigidly connected to close with bank is connected; Non-prestressed leverage connects and comprises hinge and be rigidly connected.
The underbeam of closed type three poles framework for support can adopt horizontal beam or camber line beam among the present invention, and two uneven posts of axis can adopt two right cylinders, two local axis parallel columns or two camber line posts.
Prestressing force described in the present invention connects, and is to add transition bank component between rod member, and carries out pretension with preload piece, and described preload piece adopts steel wire to twine the mechanical device that maybe can produce prefastening load; It is on the frame outline of three bar closed type structures that steel wire twines, with the steel wire winding formation steel wire floor of belt tension.
The present invention compares with four leverage closed frames, has the following advantages and the high-lighting effect: 1. the present invention has broken the tactic pattern of four traditional leverage closed frames, and is not only simple in structure, and has stability of structure and uniqueness.2. the upper space that frame is narrow and small can be arranged pressure-generating element, as working cylinder; Broad bottom is suitable for the material arranged processing component, as mould etc., has therefore effectively improved the rack space utilization rate, has reduced the machine volume, has alleviated machine weight, has reduced processing cost.
Description of drawings
Fig. 1 is the enclosed framework for support schematic diagram that four rod members are formed.
Fig. 2 is two beams, two post enclosed framework for support schematic diagrames.
Fig. 3 is a plurality of four bar frame superposition schematic diagrames.
Fig. 4 is typical four post closed frame schematic diagrames.
Fig. 5 is the tube press schematic diagram that rises in the prior art.
Fig. 6 is 6000 tons of open die forging hydraulic presses of single cylinder schematic diagram in the prior art.
Fig. 7 is for to carry out the transition to three leverage closed frame schematic diagrames by four bar closed frames.
Fig. 8 sets up three bar enclosed framework for support schematic diagrames of transition bank component for employing provided by the invention.
Fig. 9 twines the three poles framework for support schematic diagram for steel wire.
Figure 10 is the three poles framework for support schematic diagram of local axis parallel construction.
Figure 11 is the three poles framework for support schematic diagram of camber line rod structure.
Figure 12 is the three poles framework for support schematic diagram of camber line girder construction.
Figure 13 is hinged three poles framework for support schematic diagram.
Figure 14 is the three poles framework for support structural representation of 6000 tons of free forging hydraulic machines provided by the invention.
Figure 15 a is traditional 1250 tons of free forging hydraulic machines, four post frames.
Figure 15 b is 1250 tons of free forging hydraulic machine three poles framework for support structural representations provided by the invention.
The specific embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described.
This framework for support adopts three rod member closed type structures, and this three rod members closed type structure is made up of a underbeam and two uneven posts of axis, and the connection between three bars adopts the connection of prestressing force leverage to be connected with non-prestressed leverage.As shown in Figure 7, reduce a horizon bar (upper beam), and form three leverage systems; Two vertical rods develop into two braces, and its axis is not parallel, and its intersection point is the frame peak; Unique horizon bar is a underbeam, and it and two braces intersect; Compare with four leverages, after the length of bar was determined, three leverages can only form unique structure, and four leverages formed be uncertain structure, thereby the former rigidity is better than the latter.Closed type three poles framework for support is called for short three bar frames, and its upper space is less, is suitable for pressure-generating element and settles; And lower space is bigger, just is being suitable for the setting of material forming parts.It has fundamentally solved the huge contradiction that pressure-generating element and material forming parts requisite space difference cause.
In order to guarantee the reliable connection between three bars, the connection between rod member of the present invention adopts the connection of prestressing force leverage to be connected two kinds of big classes of connection with non-prestressed leverage.Non-prestressed connection can be divided into hinge (as shown in figure 13 again, four bar frames be do not allow between bar hinged, because this moment, four bar frames will arbitrarily change shape, no rigidity can be sayed) and be rigidly connected (welding, pin key, bolt mechanical connection), and that prestressing force also can be divided in connecting is hinged, be rigidly connected (welding, pin key, bolt etc.) close with bank and are connected.Bank closes that to connect be that a kind of prestressing force connects, and promptly has enough big normal pressure and frictional force on the joint face to realize reliable the connection by applying prestressing force and bank is closed the specially treated that coefficient of friction is intended to improve in the surface, making.For improving manufacturability, set up transition bank component 1 at the three rod member places of being connected to each other, see Fig. 8.Provide enough pretightning forces in order to close linkage interface to bank, need to carry out pretension with preload piece to three member structures, preload piece can adopt steel wire to twine the mechanical device that maybe can produce prefastening load, as be press-fitted with interference, bolt pretension and steel wire winding process etc.Steel wire twines the method simple and feasible: twine the three poles framework for support outline with the steel wire with certain tension force, form winding layer 2---pretension layer and produce pretightning force, see Fig. 9.Three poles framework for support has many derivation types, to adapt to different operating modes.Figure 10 is the enclosed three poles framework for support schematic diagram of local axis parallel construction, and Figure 11 is a camber line rod structure enclosed three poles framework for support schematic diagram, and Figure 12 is a camber line girder construction enclosed three poles framework for support schematic diagram.Three member structures can also adopt the compages of said structure.
The space scale of framework for support can be used as the discriminant value that adopts four bar frames or three bar frames than λ.λ calculates with following formula:
L
cBe the pressure-generating element space scale, as the working cylinder external diameter;
L
MBe material forming space of components yardstick, as the required full-size of mould;
When:
λ≤2 → employing four leverage frames;
λ＞2 → employing three leverage frames.
Enumerate several embodiment below with the further the present invention of understanding:
The design of embodiment 1:6000 ton open die forging press rack
6000 tons of free forging hydraulic machine frames of single cylinder L as described above
M=4.6m, L
C=1.7m,
Thereby it is more suitable to be designed to three bar frames.
Among Figure 14, a, c form three parallel bar frames of local axis with e.B, d and f are for closing transition block, K for the bank that is connected leverage and increases
1, K
2, K
3, K
4, K
5And K
6For bank closes face, 2 is the pretension steel wire floor.This frame can be born 6000 tons service load, only 400 tons of weight, and 6000 tons of traditional open die forging press racks are at least 800 tons of weights.
The design of embodiment 2:1250 ton press rack
330kg/cm is adopted in 1250 tons of flat-die forging press four post frames designs
2Operating oil pressure, single master cylinder work external diameter is Φ 820mm, i.e. L
c=820mm is 1940mm and forge space scale, L
M=1940mm
Therefore, it is more reasonable that 1250 tons of free forging hydraulic machine frames are designed to three bar frames, and it is lighter 40 tons than four bar frames.Figure 15 a is four traditional post frames, and Figure 15 b is three bar frames, and their drafting ratio is identical, and the former has 4 root posts of Φ 300; The latter only designs two open tubular columns, puts the beams in place to reduce greatly, and moved cross beam and underbeam are all less than the former.As seen three bar frame dimensions are little, in light weight, to 1250 tons so little tonnage press racks, but the tens of tons of loss of weight amount.
Claims (5)
1. closed type three poles framework for support, it is characterized in that: this framework for support adopts three rod member closed type structures, this three rod members closed type structure is made up of a underbeam and two uneven posts of axis, and the connection between three bars adopts the connection of prestressing force leverage to be connected with non-prestressed leverage.
2. according to the described closed type three poles framework for support of claim 1, it is characterized in that: described prestressing force leverage connect adopt hinged, being rigidly connected to close with bank is connected; Described non-prestressed leverage connects the employing hinge and is rigidly connected.
3. according to claim 1 or 2 described closed type three poles framework for support, it is characterized in that: described underbeam is horizontal beam or camber line beam, and described two uneven posts of axis adopt two right cylinders, two local axis parallel columns or two camber line posts.
4. according to the described closed type three poles framework for support of claim 2, it is characterized in that: it is to add transition bank component between rod member that described bank closes connection, and carrying out pretension with preload piece, described preload piece adopts steel wire to twine the mechanical device that maybe can produce prefastening load.
5. according to the described closed type three poles framework for support of claim 4, it is characterized in that: it is on the frame outline of three bar closed type structures that described steel wire twines, with the steel wire winding formation steel wire floor of belt tension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100985837A CN100386157C (en) | 2005-09-06 | 2005-09-06 | Closed type three poles framework for support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100985837A CN100386157C (en) | 2005-09-06 | 2005-09-06 | Closed type three poles framework for support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1736625A true CN1736625A (en) | 2006-02-22 |
| CN100386157C CN100386157C (en) | 2008-05-07 |
Family
ID=36079690
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100985837A Expired - Fee Related CN100386157C (en) | 2005-09-06 | 2005-09-06 | Closed type three poles framework for support |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982251A (en) * | 2010-09-09 | 2011-03-02 | 清华大学 | Multidirectional load bearing prestressed wire winding pre-tightening frame |
| CN101837424B (en) * | 2009-03-16 | 2012-06-13 | 苏州昆仑先进制造技术装备有限公司 | Cage-type movable crossbeam |
| WO2019134408A1 (en) * | 2018-01-03 | 2019-07-11 | 董祥义 | Hydraulic oil press |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202445U (en) * | 1985-06-25 | 1986-06-11 | 清华大学 | Prestress steel wire winded loading frame |
| CN1039754A (en) * | 1988-07-28 | 1990-02-21 | 陈贯虹 | Bidirectional hydraulic make-up machine |
| CN1018529B (en) * | 1989-01-03 | 1992-10-07 | 国家机械委济南铸造锻压机械研究所 | Three-hammerhead radial forging machine |
| CN1070853A (en) * | 1992-09-22 | 1993-04-14 | 南昌航空工业学院 | A kind of metal plate stuff half-module forming technology |
| CN2174277Y (en) * | 1993-10-11 | 1994-08-17 | 马永怀 | Arching free forging hammer |
| CN2296812Y (en) * | 1997-10-15 | 1998-11-11 | 大连绿洲食品包装有限公司 | Quick-closed four-column press |
| AT408316B (en) * | 1998-12-07 | 2001-10-25 | Voest Alpine Ind Anlagen | STAND FOR A ROLLING STAND |
| CN2468708Y (en) * | 2001-02-26 | 2002-01-02 | 王及元 | Press for forming U shaped articles |
-
2005
- 2005-09-06 CN CNB2005100985837A patent/CN100386157C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837424B (en) * | 2009-03-16 | 2012-06-13 | 苏州昆仑先进制造技术装备有限公司 | Cage-type movable crossbeam |
| 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 |
| WO2019134408A1 (en) * | 2018-01-03 | 2019-07-11 | 董祥义 | Hydraulic oil press |
| US11214031B2 (en) | 2018-01-03 | 2022-01-04 | Ningbo Dema Intelligent Machinery Co., Ltd. | Oil hydraulic press |
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| Publication number | Publication date |
|---|---|
| CN100386157C (en) | 2008-05-07 |
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Granted publication date: 20080507 Termination date: 20100906 |