CN2848426Y - Single shaft bieccentric non symmetrical rolling shearing machine - Google Patents
Single shaft bieccentric non symmetrical rolling shearing machine Download PDFInfo
- Publication number
- CN2848426Y CN2848426Y CN 200520024427 CN200520024427U CN2848426Y CN 2848426 Y CN2848426 Y CN 2848426Y CN 200520024427 CN200520024427 CN 200520024427 CN 200520024427 U CN200520024427 U CN 200520024427U CN 2848426 Y CN2848426 Y CN 2848426Y
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- central line
- utility
- machine frame
- cutting edge
- rolling
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Abstract
The utility model belongs to the technical field of steel rolling mechanical auxiliary equipment, particularly a single-shaft double-eccentric non-symmetrical rolling shearer. The utility model comprises a machine frame 11, a left and a right crank link mechanisms arranged on the machine frame, and a circular arc-shaped upper cutting edge 1 arranged on an upper knife frame 2, wherein a lower cutting edge 15 is arranged on a lower edge platform 16. The utility model is characterized in that a central line O 2 to O 2 of two cranks 6 and 9 arranged on a crankshaft 7 offsets the distance OS to a central line O 1 to O 1 of the machine frame, and the OS is 10 to 60MM and forms a non-symmetrical structure with the central line O 1 to O 1 of the machine frame. Compared with the prior art, the circular arc-shaped cutting edge motion track approaches to pure rolling, the integral force bearing of the shearer is much reasonable, the force bearing torque ratio of the integral shearing mechanism is reduced compared with the original force bearing torque ratio, the shearing quality of steel plates is increased and the service life of knife tools is also increased.
Description
Technical field
The utility model belongs to rolling machinery auxiliary equipment technical field, is specifically related to the technological improvement of installation position of drive shafting in a kind of roller steel plate shearing machine.
Background technology
In the prior art, the cutting to length machine adopts roller to cut to cut main transmission two kinds of schemes are arranged: a kind of is the twin shaft double eccentric-pieces, and a kind of is the single shaft double eccentric formula.So-called twin shaft double eccentric-pieces, be exactly final drive shaft be two, and drive shaft axis is vertical with cutting edge, an off-centre arranged, so be called the twin shaft double eccentric-pieces on the every axle.The scale rolling cut of external design is cut this form that is.And the single shaft double eccentric formula has only a final drive shaft, two bent axles of final drive shaft and frame central line symmetry.Because the circular arc cutting edge is carried out pure rolling, this structure makes the cutting edge discontinuity, has shortened cutter life greatly, has reduced shearing quality.
Summary of the invention
The utility model provides a kind of circular arc cutting edge that improves to shear operating mode at the technical problem that exists in the prior art, reduces shearing force, improves the circular arc cutting edge life-span, improves the asymmetric rolling shearing machine of single shaft double eccentric of shearing quality.
The utility model is realized by following scheme, the asymmetric rolling shearing machine of single shaft double eccentric, include frame, with be contained in the left and right sides toggle on the frame and be contained in circular arc upper scissor blade on the upper tool post, lower scissor blade is contained on the lower blade station, it is characterized in that being contained in the center line O of two cranks on the bent axle
2-O
2With respect to frame central line O
1-O
1Offset distance OS is 20～100mm.
Offset distance OS described in the utility model calculates by following formula:
OS＝L
3?sin(90°-β)
In the formula: β---asymmetric front rod and horizontal plane angle;
L
3---length of connecting rod;
β＝90°-arcsin(OS/L
3)。
Two crank center lines overlap with the frame central line on the gyroaxis of existing single shaft double eccentric rolling shearing machine, and promptly two cranks are symmetrically distributed in frame central line both sides.The utility model is with two crank center line O
2-O
2One of horizontal-shift apart from OS (with pull bar not at homonymy), i.e. two crank center line O
2-O
2With frame central line O
1-O
1At a distance of OS, form and frame central line dissymmetrical structure, be called the asymmetric rolling shearing machine of single shaft double eccentric, be characterized in making stressing conditions good, make the steel plate shearing quality be improved significantly.
Advantage of the present utility model and beneficial effect are:
The utility model circular arc cutting edge movement locus more approaches pure rolling, and cutter is whole stressed more reasonable, and the suffered torque ratio of whole cutting mechanism reduced originally to some extent, and quality of steel plates improves greatly, and cutter life also greatly prolongs.
Description of drawings
Fig. 1 is the structure chart of the asymmetric rolling shearing machine of single shaft double eccentric
Fig. 2 is the analysis chart of offset distance OS in the asymmetric rolling shearing machine of single shaft double eccentric
Among the figure: 1-circular arc upper scissor blade, the 2-upper tool post, the 3-right side is hinged, the 4-gear wheel, the 5-right connecting rod, the right crank of 6-, the 7-bent axle, the 8-crossbeam, 9-left side crank, 10-left side connecting rod, the 11-frame, a 12-left side is hinged, 13-level of flexibility pull bar, 14-steel plate, 15-lower scissor blade, 16-lower blade station
O
1-O
1: frame central line, O
2-O
2: left and right sides crank center line, OS: offset distance.
The specific embodiment
With reference to the accompanying drawings embodiment is further described, present embodiment is to be used for illustrating of the present utility model, rather than the utility model is carried out any restriction.
The utility model is an example with a large-scale rolling shearing machine of certain iron company's design, has adopted the single shaft double eccentric unsymmetric structure.Shearing force 850KN, shear steel board size 40 * 2700 * 6000～120000.Per minute is sheared number of times 15 times.
The asymmetric rolling shearing machine of single shaft double eccentric, constitute by frame 11, circular arc upper scissor blade 1, lower scissor blade 15 and toggle etc., scissors 1 is contained on the upper tool post 2 on the circular arc, right hinged 3 and left hinged 12 are contained on the upper tool post 2, the upper end of left side connecting rod 10 links to each other with left crank 9, the lower end links to each other with a left side hinged 12, the upper end of right connecting rod 5 links to each other with right crank 6, the lower end links to each other with the right side hinged 3, bent axle 7 is contained in the dead eye on the frame 11, gear wheel 4 is contained in the right-hand member of bent axle 7, when bent axle 7 is installed, and two cranks 6 and 9 center line O
2-O
2With respect to frame central line O
1-O
1Offset distance OS is 61.12mm, with frame central line O
1-O
1Constitute unsymmetric structure.
Offset distance OS is by calculating shown in Figure 2, and the rolling shearing machine connecting rod is in asymmetric front and back working condition.Before asymmetric, when being in OS maximum shear state, connecting rod α d is horizontal by the β angle, and bent axle can not all be used for shearing for the power of connecting rod, and efficient is very low; After asymmetric, when being in the maximum shear state, connecting rod α ' d is vertical with horizontal plane, and the power of connecting rod almost all is used for shearing.
D---connecting rod and on cut the hinged point of frame;
α---the hinged point of asymmetric front crankshaft and connecting rod;
α '---asymmetric back bent axle and the hinged point of connecting rod;
β---asymmetric front rod and horizontal plane angle;
L
3---length of connecting rod;
Ad, α ' d---connecting rod;
F
1---act on the power on the steel plate before structure is asymmetric;
F
2---act on the power on the steel plate after structure is asymmetric;
F---the power on the connecting rod
β＝90°-arcsin(OS/L
3)
F
1＝F
F
2＝cos(90-β)
αα′＝2·L
3sin((90°-β)/2)，dh′＝L
3·cos((90°-β)/2)
Again because α α ' dh '=L
3α h, so, α h=α α ' dh '/L
3OS=α h OS=α α ' dh '/L
3=L
3Sin (90 °-β) promptly
Asymmetric side-play amount is: OS=L
3Sin (90 °-β)
Substitution known parameters β=87.5 °, L
3=1400mm
So obtain asymmetric side-play amount be: OS=L
3Sin (90 °-β)=61.12mm.
Gear wheel 4 is given bent axle 7 with transmission of power when shearing operation, and bent axle 7 rotations drive the left and right sides crank 9,6 with certain phase difference and rotate together, and left and right sides crank 9,6 drives left and right sides connecting rod 10,5 respectively and the left and right sides hinged 12,3 drives upper tool post 2 motions.Upper tool post 2 circular arc upper scissor blades 1 mounted thereto are done approximate pure rolling under the control of level of flexibility pull bar 13, finish shearing to steel plate 14 with lower scissor blade 15.
Claims (1)
1, the asymmetric rolling shearing machine of a kind of single shaft double eccentric, include frame (11), with be contained in the left and right sides toggle on the frame and be contained in circular arc upper scissor blade (1) on the upper tool post (2), lower scissor blade (15) is contained on the lower blade station (16), and it is characterized in that being contained in two cranks (6) on the bent axle (7) and the center line of (9) is 20～100mm with respect to frame central line offset distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024427 CN2848426Y (en) | 2005-07-04 | 2005-07-04 | Single shaft bieccentric non symmetrical rolling shearing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024427 CN2848426Y (en) | 2005-07-04 | 2005-07-04 | Single shaft bieccentric non symmetrical rolling shearing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2848426Y true CN2848426Y (en) | 2006-12-20 |
Family
ID=37520904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520024427 Expired - Fee Related CN2848426Y (en) | 2005-07-04 | 2005-07-04 | Single shaft bieccentric non symmetrical rolling shearing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2848426Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826240A (en) * | 2016-12-27 | 2017-06-13 | 广州东昇机械有限公司 | A kind of full-automatic rolls up roll unit |
| CN107363317A (en) * | 2017-08-05 | 2017-11-21 | 太原科技大学 | The sheet metal rolling shearing machine that a kind of hydraulic cylinder is arranged vertically |
-
2005
- 2005-07-04 CN CN 200520024427 patent/CN2848426Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826240A (en) * | 2016-12-27 | 2017-06-13 | 广州东昇机械有限公司 | A kind of full-automatic rolls up roll unit |
| CN107363317A (en) * | 2017-08-05 | 2017-11-21 | 太原科技大学 | The sheet metal rolling shearing machine that a kind of hydraulic cylinder is arranged vertically |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |