CN102363152A - Production equipment of steel for non-cold processing joint - Google Patents
Production equipment of steel for non-cold processing joint Download PDFInfo
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- CN102363152A CN102363152A CN2011103129010A CN201110312901A CN102363152A CN 102363152 A CN102363152 A CN 102363152A CN 2011103129010 A CN2011103129010 A CN 2011103129010A CN 201110312901 A CN201110312901 A CN 201110312901A CN 102363152 A CN102363152 A CN 102363152A
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Abstract
The invention discloses production equipment of steel for non-cold processing joint. A finished product front rolling mill of a hot rolling continuous mill and a finished product rolling mill are improved. According to the production equipment disclosed by the invention, fine-thread steel with high precision can be rolled by using a hot rolling process and is formed in one step without secondary processing; and the production equipment has high production efficiency and low production cost and is beneficial to scale application.
Description
Technical field
The present invention relates to ground anchorage and architectural engineering technology, be specifically related to a kind of non-cold working and connect production equipment with steel.
Background technology
In social base is built, all be unable to do without steel like construction projects such as highway, railway, bridge, tunnel, mine, dam bodys, wherein all kinds of bar steel are indispensable in these capital constructions.With the mine engineering is example, and mine laneway is arranged in certain geological environment, and subterranean body forms various structural planes in the geological movement of very long complicacy; Be easy to cracking; Especially in the middle and later periods of engineering excavation, because near the load change the working face causes the stress field redistribution, structural plane in the rock mass or weak part are moved by stress; The macroscopic view that is developed into rock mass by less creep ruptures, and causes engineering accident.In order to prevent the generation of this type of accident, often utilize all kinds of bar steel that the mine laneway country rock is imposed anchoring in the engineering, be about to bar steel one end and squeeze into rock mass inside and fixed with rock mass; End exposes and fixes with clamp structure; Through the axial force of bar steel, change the stress state of certain limit rock mass in the country rock into three dimension stress by unidirectional (or two-way) pressurized, thereby improve its hoop compression strength; To rock mass support and effect of contraction initiatively is provided, prevents that rock mass from caving in.
Bar steel commonly used is mainly all kinds of screw-thread steels, but screw-thread steel is difficult to directly cooperate with clamp structure, therefore need be to the cold working of body of rod end secondary, and the formation tailing screw flight can cooperate realization fastening with clamp structure.The normal processing method that adopts has two kinds, and a kind of is that lathe turning method, another kind are to prolong nip drum silk method.The turning method can cause turning position sectional area to reduce, and bearing capacity reduces, and the screw-thread steel overall performance descends; Prolong platen press and also can cause the tailing screw flight sectional area to reduce, bearing capacity descends, and also is prone to cause steel product stress to concentrate, and extends rate variance, and brittle failure often takes place afterbody when dynamic loading is big.No matter adopt which kind of cold working means; The capital makes the overall performance of screw-thread steel form bottleneck at the tailing screw flight place; And the length of its tailing screw flight section is limited (being generally 100mm); When country rock generation wall caving causes the afterbody protruded length long, even being screwed to the end, clamp nut also can't contact with scar, cause anchoring to be lost efficacy.In addition, when many reinforcing bars of needs connect use,, be difficult to connect use through the realization that is threaded because the head and the tail pitch of screw-thread steel is different.
Summary of the invention
Given this, the invention provides a kind of non-cold working and connect production equipment, can the connection of rolling high precision minor thread use steel with steel.The production equipment that non-cold working of the present invention connects with steel comprises finisher and the preceding milling train of finished product, and wherein, finisher comprises direct current generator, reductor, distributor box, universal drive shaft, accent tooth device, lash compensation device and roll; Wherein, Direct current generator, reductor and distributor box are connected through shaft coupling; Distributor box is connected with roll through universal drive shaft, has the tooth device of accent and lash compensation device A on the universal drive shaft, has lash compensation device B in the distributor box; The roll of finisher has the cross rib groove, and the cross rib groove forms helix on same helicoid; Wherein, transfer the tooth device to comprise left and right two dishes, two dishes have corresponding projection; Projection is the arc of not enough semicircle, has the gap between the projection, and two dishes are formed revolute pair by jackshaft; The projection of left side dish has the adjustment pin; The correspondence position of the projection of right dish has groove, and left side dish is fixedly connected with gear output shaft in the distributor box, and the right side is coiled and is fixedly connected with universal drive shaft; And lash compensation device A is an individual gears, is installed in the spline housing end of universal drive shaft, and its modulus is identical with spline housing with the number of teeth, and the spline housing and the splined shaft of lash compensation device A and universal drive shaft all mesh; And; Lash compensation device B comprises first gear, second gear and the 3rd gear; First gear is fixedly connected with the power shaft of travelling gear, and the 3rd gear is fixedly connected with the output shaft of travelling gear, and the output shaft of travelling gear is fixedly connected with universal drive shaft; First gear and the 3rd gear all with second gears engaged, and be provided with spring and inclined-plane pin between first gear and the 3rd gear; And the roll pass of milling train is a section groove before the finished product, and the cross section mid portion of the rolled piece that it rolls out is more flat, two ends outstanding, and the size of the section groove of milling train is corresponding with the size of finisher pass before the finished product; And, be provided with ways between milling train and the finisher before the finished product.
Beneficial effect:
The pass size of milling train and finisher is corresponding before the finished product of production equipment of the present invention, and has the tooth device of accent and lash compensation device, and long working is indeformable, side set not, and the rolling accuracy height, production cost is low.
Description of drawings
Fig. 1 is that non-cold working connects the stereogram with steel.
Fig. 2 is that non-cold working connects the helicitic texture sketch map with steel.
Fig. 3 is that non-cold working connects the schematic cross-sectional view with steel.
Fig. 4 is that non-cold working connects the vertical section sketch map with steel.
Fig. 5 is the structural representation of finisher.
Fig. 6 is the structural representation of the roll of finisher.
The structural representation that Fig. 7 coils for a left side of transferring the tooth device.
The structural representation that Fig. 8 coils for the right side of transferring the tooth device.
Fig. 9 is the lash compensation device structural representation in the distributor box.
Figure 10 is the lash compensation device structural representation on the universal drive shaft.
Figure 11 is the cross sectional representation of the flat formula steel that mill milling goes out before the finished product.
Wherein, the D1-core diameter of thread (nominal diameter), the D2-pitch diameter of thread, L-pitch, the tooth of H-screw thread is high, β-tooth form angle, the 1-direct current generator, the 2-shaft coupling, the 3-reductor, the 4-shaft coupling, the 5-distributor box, the 6-lash compensation device, the 7-universal drive shaft, the 8-roll, 9-transfers the tooth device
Specific embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, describe the present invention.
As shown in Figure 1, the rolling non-cold working connection of the present invention forms helix with the cross rib on the steel poker body of rod on same helicoid, and any position of the body of rod all can be revolved with supporting nut, no secondary cold working.
Show non-cold working like Fig. 2 and connect the helicitic texture with steel, wherein L is a pitch, L=4 ± 2mm; Preferably, pitch L is 3mm, 4mm, 5mm, 6mm.
Show non-cold working like Fig. 3 and connect the cross section with steel, wherein H is the tooth height of screw thread, 1.0mm≤H≤1.7mm; Preferably, the high H of tooth is 1.0mm, 1.2mm, 1.4mm, 1.5mm.
Show non-cold working like Fig. 4 and connect the vertical section with steel, the tooth form of screw thread is trapezoidal, and β is the tooth form angle, is the angle of trapezoidal two sides extended line; Preferably, tooth form angle β is 60 °.
The present invention has also considered lead angle γ except that pitch L that has considered screw thread and Ya Gao H.Lead angle γ is meant on middle footpath cylinder or middle footpath circular cone, the tangent line of helix and interplanar angle perpendicular to the axis of thread, and computing formula is: γ=arc tan (L/ π D
2), D wherein
2Be the pitch diameter of thread.When getting pitch L=4mm, during the high H=1.4mm of tooth, the numerical value of body of rod nominal diameter D1 and lead angle γ is:
| Nominal diameter D1 (mm) | 16 | 18 | 20 | 22 |
| Lead angle γ (°) | 4.18 | 3.76 | 3.41 | 3.12 |
With nominal diameter D1=20mm, pitch L=4mm, the high H=1.4mm of tooth, lead angle γ=3.41 °, the product of tooth form angle β=60 ° is an example, the heavy 2.64kg/m of actual measurement product rice.If adopt regular screw threads steel afterbody cutted thread technology to realize equal effect; Then after the turning at the bottom of the tailing screw flight footpath D1 be not less than 20mm; Look into related data and can know that corresponding screw thread is the fine thread of M22 * 1.5; Being that the end footpath D1 of the used screw-thread steel of turning is minimum is 22mm, and under the desirable prerequisite that screw-thread steel ovality and cross rib weight are disregarded, screw-thread steel rice heavily is 2.98kg/m.Can know that relatively the non-cold working of every use 1m connects uses steel, can practice thrift steel 0.34kg, promptly existing screw-thread steel can be practiced thrift steel 11.4%, and as considering actual conditions, this ratio also will enlarge.
During use, said non-cold working connection is squeezed into country rock inside with an end of steel, fixed with country rock is one, installs fastening the getting final product of secure component (like anchor dish and nut etc.) according to wall rock condition additional at body of rod exposed parts.The reliable screw thread self-locking property of this product has avoided clamp nut to come off, and has improved security.Because the cross rib on the body of rod forms helix on same helicoid, when country rock generation wall caving comes off, when anchoring was lost efficacy, secure component can follow up continuously, and was fastening again, need not the secondary anchoring, greatly practiced thrift steel, reduced engineering cost.
Rolling equipment:
The production equipment that non-cold working of the present invention connects with steel comprises finisher K1 and the preceding milling train K2 of finished product; The roll of milling train K2 has section groove before the finished product; Its rolled piece that rolls out is flat formula steel, and the roll pass of finisher K1 is the pass that forms helix on the same helicoid of cross rib groove, is equipped with on the finisher K1 and transfers tooth device and lash compensation device; Cross rib on the body of rod of assurance finished product screw-thread steel forms helix on same helicoid; And pitch is 4 ± 2mm, and lead angle is not more than 6 °, the tooth height of screw thread between 1.0mm between the 1.7mm.
Fig. 5 shows the structure of finisher K1, and it comprises direct current generator, reductor, distributor box, universal drive shaft, accent tooth device, lash compensation device and two rolls.Wherein, direct current generator, reductor and distributor box are connected through shaft coupling, and distributor box is connected with roll through universal drive shaft, on universal drive shaft, are equipped with one and transfer the tooth device, in distributor box He on the universal drive shaft, a lash compensation device are housed respectively.
Fig. 6 shows the roll of finisher K1, and its groove is the screw thread groove, is evenly distributed with horizontal negative thread on the surface of groove recess.For the roll pass that makes finisher K1 is continuous screw thread pass, thereby make the cross rib on the screw-thread steel body of rod on same helicoid, form helix, in finisher K1, be provided with and transfer tooth device and lash compensation device, the two is used to control the relative position of roll.
About transferring the tooth device, it is used to adjust the position of one of them roll, to control the relative position of two rolls.Transfer the tooth device to comprise left and right two dishes, like Fig. 7 and shown in Figure 8, two dishes have corresponding projection; Projection is the arc of not enough semicircle, has the gap between the projection, and two dishes are formed revolute pair by jackshaft; The projection of left side dish has the adjustment pin, is positioned at the through hole that is provided with in advance, and the right half part correspondence position of right dish has groove; The adjustment pin is resisted against the groove of right dish, and left side dish is fixedly connected with gear output shaft in the distributor box, and the right side is coiled and is fixedly connected with the universal drive shaft of topping roll.
The effect of transferring the tooth device is to realize the fine setting to universal drive shaft through the relative position of adjusting left and right two dishes; And then the fine setting of realization breaker roll; Concrete grammar is: regulate the adjustment pin on the dish of a left side, right dish drives connected topping roll via universal drive shaft and produces rotation with respect to left disc spins; The horizontal negative thread of topping roll screw thread groove microdisplacement correspondingly then; This moment, bottom roll was static, so the horizontal negative thread relative position of upper and lower roll is able to adjustment, repeatedly adjusted until forming continuous screw thread pass.Preferably, the adjusting range of adjustment pin is 0-L.
About lash compensation device, its effect is to eliminate gear backlash in advance, because gears engaged has sideshake, if the influence of gear backlash is not considered in adjustment during roll pass, two rolls will misplace, and cause screw thread discontinuous.Fig. 9 shows the structure that is installed in the lash compensation device in the distributor box; It is made up of three gears, and gear 12 is fixedly connected with the power shaft of distributor box, and this power shaft connects universal drive shaft as output shaft simultaneously; Gear 11 is fixedly connected with another output shaft of distributor box; This another output shaft is fixedly connected with another root universal drive shaft, and gear 10 is hinged with power shaft, can power shaft be that rotate in the axle center.Gear 11 all meshes with gear 12 and 10.Be provided with butterfly spring between the gear 10 and 12; Butterfly spring provides power for gear 10; Gear 10 relative 12 is rotated, thereby made before power shaft does not rotate, gear 10 is in the strict state that meshes with 11 the field of conjugate action; The gear 11 and 12 the field of conjugate action also are in the state of strict engagement, reach the effect of eliminating gear clearance in advance.With Fig. 9 is example; The gear 10 and 11 the field of conjugate action and the field of conjugate action of gear 11 and 12 are two flank of tooth of the same groove of gear 11; The median plane of supposing this groove overlaps with paper; Then if the direction of driving torque is perpendicular to paper inwards, gear 12 is the flank of tooth of paper below with 11 the field of conjugate action, and the field of conjugate action of gear 11 and 10 is the flank of tooth above the paper.The operating principle of this lash compensation device is: provide pretightning force that three gears are meshed in twos by butterfly spring, and no sideshake, after the rotation torque input, gear 12 driven wheels 11 rotate, and moment of torsion is passed to two rolls through universal drive shaft.Lash compensation device can make the strict in advance engagement of gear meshing portion, guarantees long-term operation gearless sideshake, thereby keep the relative position of two rolls constant all the time that the screw thread that rolls out is indeformable, not side set.
In addition, for the splined shaft of elimination universal drive shaft and the gap between the spline housing, on universal drive shaft, also be provided with lash compensation device.The operating principle of the lash compensation device in the lash compensation device on the universal drive shaft and the distributor box is identical, but structure is different.
The present invention is provided with ring flange in the end of the spline housing of universal drive shaft; Lash compensation device on the universal drive shaft is a circular ring; Interior ring is spline, and the keyway modulus is identical with spline housing with the number of teeth, and outer shroud is and the corresponding flange arrangement of spline housing end flange dish (shown in figure 10); This compensator is enclosed within on the splined shaft and with the spline housing ring flange and is connected through the inclined hole bolt; Utilize the inclined hole bolt moment of torsion to be provided, make the strict all the time engagement of spline housing and splined shaft to reach the purpose of eliminating drive gap to spline housing.
For milling train K2 before the finished product, be different from conventional oval roll pass, the roll of milling train K2 has section groove before the finished product, and the rolled piece that rolls out is flat formula steel, and cross section is the shape (shown in figure 11) that mid portion is more flat, two ends are outstanding.For guaranteeing rolling accuracy, flat formula steel before the finished product of the corresponding different size of the finished product screw-thread steel of different size.
Because flat formula steel must be sent into finisher K1 and just can reach rolling requirement after leading the position before the finished product, and therefore ways is set.Ways is meant in the rolling of sectional iron process, is installed in the roll pass front and back and helps rolled piece accurately stably to get into and derive the device of roll pass by set direction and state.The arrival end of ways is the bigger circular hole of diameter, and the port of export is slotted hole and the corresponding certain angle that reversed, and mid portion seamlessly transits.In specific embodiment, the exit of milling train K2 is provided with ways one before finished product, is provided with ways two in the porch of finisher K1.During operation, become flat formula steel after rolled piece milling train K2 before finished product is rolling, level gets into ways one, gets into ways two after reversing 45 °, vertically gets among the finisher K1 after reversing 45 ° once more.Thus, utilize ways one and ways two, the flat formula steel that milling train K2 before the finished product is rolled out is sent into finisher K1 after 90 ° of axial torsion.
Horizontal and vertical the flowing after rolled piece gets into finisher K1 considered in the design of the section groove of milling train K2 roll before the finished product.Particularly, be that the finished product screw-thread steel of 20mm is an example with the nominal diameter, flat formula steel is of a size of 31 * 13mm before its finished product, sends in the screw thread groove of finisher K1 vertically pressurized, and the steel material generates screw thread simultaneously to horizontal extension; Because the special size of flat formula steel, make that the degree of lateral extension of rolled piece is controlled, guarantee not produce vertical rib; And, what is more important, rolling is that pitch is less than 6mm to this finisher K1; Tooth is tall and big in 1.0mm, and lead angle is less than 6 ° fine thread, if can not strict satisfy the size corresponding relation of rolled piece and groove; Also just can not control the horizontal and vertical mobile degree of steel material, with the rolling infull substandard products of screw thread occurring, even can't roll out the screw thread of shape.
In addition, in order to reduce roll displacement in vertical direction, on the roll pull bar of finisher K1, clamp nut is housed; Be fastened on respectively in the bearing block of upper and lower roll, totally 8, can increase the pretightning force of roll; Improve the rigidity of milling train; Eliminate the roll spring to a certain extent, keep the stability of milling train long working, improve the rolling accuracy of long working.Preferably, the 500mm of the more conventional roll of roll integral width of finisher K1 has shortened about 100mm, can reduce the amount of deflection of roll, improves the rolling accuracy of long working.
Work flow:
With rolling nominal diameter D1=20mm, pitch L=4mm, the non-cold working of the high H=1.4mm of tooth connects uses steel to be example; The use billet bloom size is 150 * 150 * 2000mm, and the breaking down temperature is between 1200-1250 ℃, through 7 road blooming mill continuous rollings; Obtain cross section and be quadrangle (60 * 60mm) rolled piece, mill milling in 4 roads again, in roll temperature between 1000-1150 ℃; Obtain cross section and be circular (35 * 35mm) rolled piece, entering finish rolling stage; Totally 4 of finishing mills, milling train K2 before rolled piece is admitted to finished product after preceding twice finish rolling, through its section groove is rolling obtain finished product before flat formula steel (13 * 31mm); Lead the position through ways, flat formula steel gets into finisher K1 before the finished product, and finishing temperature is more than 850 ℃; Finisher K1 with its rolling be nominal diameter D1=20mm; Pitch L=4mm, the non-cold working of the high H=1.4mm of tooth connects uses steel, subsequently cooling, packaging and warehousing.In operation process, change the relative position of upper and lower roll screw thread groove through the accent tooth device of regulating finisher K1, make roll form the cross rib groove forms helix on same helicoid pass.Through in the distributor box with universal drive shaft on lash compensation device eliminate gear clearance, keep roll pass, guarantee rolling accuracy.
In sum, more than being merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a non-cold working connects the production equipment with steel, it is characterized in that, comprising: milling train before finisher and the finished product, wherein,
Finisher comprises direct current generator, reductor, distributor box, universal drive shaft, accent tooth device, lash compensation device and roll; Wherein, Direct current generator, reductor and distributor box are connected through shaft coupling; Distributor box is connected with roll through universal drive shaft, has the tooth device of accent and lash compensation device A on the universal drive shaft, has lash compensation device B in the distributor box; The roll of finisher has the cross rib groove, and the cross rib groove forms helix on same helicoid; Wherein,
Transfer the tooth device to comprise left and right two dishes, two dishes have corresponding projection, and projection is the arc of not enough semicircle; Has the gap between the projection; Two dishes are formed revolute pair by jackshaft, and the projection of left side dish has the adjustment pin, and the correspondence position of the projection of right dish has groove; Left side dish is fixedly connected with gear output shaft in the distributor box, and the right side is coiled and is fixedly connected with universal drive shaft; And,
Lash compensation device A is an individual gears, is installed in the spline housing end of universal drive shaft, and its modulus is identical with spline housing with the number of teeth, and the spline housing and the splined shaft of lash compensation device A and universal drive shaft all mesh; And,
Lash compensation device B comprises first gear, second gear and the 3rd gear; First gear is fixedly connected with the power shaft of travelling gear; The 3rd gear is fixedly connected with the output shaft of travelling gear; The output shaft of travelling gear is fixedly connected with universal drive shaft, first gear and the 3rd gear all with second gears engaged, and be provided with spring and inclined-plane pin between first gear and the 3rd gear; And,
The roll pass of milling train is a section groove before the finished product, and the cross section mid portion of the rolled piece that it rolls out is more flat, two ends outstanding, and the size of the section groove of milling train is corresponding with the size of finisher pass before the finished product; And,
Be provided with ways between milling train and the finisher before the finished product.
2. production equipment as claimed in claim 1 is characterized in that, finisher further comprises the clamp nut in the roll chock that is fastened on finisher.
3. production equipment as claimed in claim 1 is characterized in that, the about 100mm of the conventional shortening of the width of the roll of finisher.
4. production equipment as claimed in claim 1 is characterized in that, said ways comprises ways one and ways two, lays respectively at the exit of milling train before the finished product and the porch of finisher, and ways one and two windup-degree all are 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110312901 CN102363152B (en) | 2011-10-14 | 2011-10-14 | Production equipment of steel for non-cold processing joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110312901 CN102363152B (en) | 2011-10-14 | 2011-10-14 | Production equipment of steel for non-cold processing joint |
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| CN102363152A true CN102363152A (en) | 2012-02-29 |
| CN102363152B CN102363152B (en) | 2013-06-26 |
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| CN 201110312901 Active CN102363152B (en) | 2011-10-14 | 2011-10-14 | Production equipment of steel for non-cold processing joint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226614A (en) * | 2018-09-06 | 2019-01-18 | 山东焱鑫矿用材料加工有限公司 | A kind of molding milling train and control method rolling double rotational directions thread connection steel part |
| CN110421007A (en) * | 2019-06-25 | 2019-11-08 | 江阴兴澄特种钢铁有限公司 | The method of milling train, the continuous rolling production line with the milling train and rolled threaded steel |
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| CN109226614B (en) * | 2018-09-06 | 2023-12-29 | 山东焱鑫矿用材料加工有限公司 | Forming rolling mill for rolling double-rotation-direction threaded connection steel part and control method |
| CN110421007A (en) * | 2019-06-25 | 2019-11-08 | 江阴兴澄特种钢铁有限公司 | The method of milling train, the continuous rolling production line with the milling train and rolled threaded steel |
| CN110421007B (en) * | 2019-06-25 | 2024-05-17 | 江阴兴澄特种钢铁有限公司 | Rolling mill, continuous rolling production line with rolling mill and method for rolling deformed steel bar |
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| Publication number | Publication date |
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| CN102363152B (en) | 2013-06-26 |
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