CN1020683C - Hydraulic constant-power stepless speed-regulating tension-controlling coiling machine - Google Patents
Hydraulic constant-power stepless speed-regulating tension-controlling coiling machine Download PDFInfo
- Publication number
- CN1020683C CN1020683C CN 90102878 CN90102878A CN1020683C CN 1020683 C CN1020683 C CN 1020683C CN 90102878 CN90102878 CN 90102878 CN 90102878 A CN90102878 A CN 90102878A CN 1020683 C CN1020683 C CN 1020683C
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- China
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- power
- tension
- constant
- coiling machine
- stocking
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- Expired - Fee Related
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- 238000005097 cold rolling Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 description 14
- 230000001276 controlling effect Effects 0.000 description 6
- 238000003801 milling Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Winding, Rewinding, Material Storage Devices (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The invention relates to a hydraulic constant-power stepless speed regulation control coiler which is characterized in that a hydraulic control system with a constant-power oil motor as an actuating element is adopted to control the driving power of the coiler to be constant power, so that the tension of a coiler mandrel to a rolled material is constant tension. The invention is in open-loop control mode, so that the feedback of tension signals measured by bolts is not needed, and a signal conversion amplifying device is not needed, so that the investment cost is greatly reduced, and the system is simple, the failure rate is also greatly reduced, the tension is stable when the cold rolling mill is used by a phi 45/phi 200 four-roller cold rolling mill produced by Kunming heavy machinery plants, and the cost is only about 1/5 of a direct current adjusting system.
Description
Hydraulic constant-power, stepless speed-regulating and tension-controlled coiling machine, the present invention is used for controlling pull reel, so that stocking keeps permanent tension force when rolling.
As everyone knows, stocking requires pull reel that its tension force is kept constant when rolling, this is cold rolling technological requirement, but owing to batch radius and increase gradually and certainly will cause pull reel that the tension force of stocking is also increased thereupon, just must take the necessary measures makes pull reel tension force maintenance to stocking when stocking is rolling constant to stocking for this reason in coiling process.Accompanying drawing 1 illustrates the rolling schematic diagram of stocking, and wherein 1 is backing roll, and 2 is working roll, and 3 is stocking, and 4 is the reel of pull reel, and T is a coiling tension, and V is the linear velocity of stocking in the milling train exit, and up to now, employed pull reel has three kinds of forms:
1) friction-type pull reel, the moment of friction that it utilizes the output shaft end-face friction to produce is controlled pull reel, when batching the radius increase, moment of friction just increases, increase the tension force cause and increase with regard to having offset like this, but that this coiling machine is only applicable to batch radius is less stocking because of batching radius, or the lighter stocking production of monovolume weight, along with the development of cold rolling production, the coiling machine of this form is progressively eliminated.
2) the permanent pull reel of DC speed regulation, it is to utilize the measured signal of tension pick-up that is installed on the milling train port of export, feedback makes it adapt to the milling train muzzle velocity with the rotating speed of controlling direct current generator afterwards, and make the muzzle velocity of the linear velocity of stocking on the reel a little more than milling train, this DC speed regulation control of disposing on coiling machine is a closed-loop control system, tension stability when though the coiling machine of this form uses, speed governing is convenient, but a complete set of control system must comprise checkout gear, signal conversion amplifying device, several sections such as pulsed triggering circuit SCR rectification circuit, so expense costliness, and along with the increase expense of driving power is multiplied especially, moreover maintenance, the difficulty of operation is also higher.
3) hydraulic pressure pull reel, it is to rely on electric current servo valve and impulse circuit dispatch control system to control tension force, therefore it also is the rotating speed that the feedback of mat tension force signal is controlled coiling machine, it also is a kind of closed-loop control system, tension stability when this coiling machine uses, easy to operate, but it is similar to the permanent pull reel of DC speed regulation, because complete unit also must comprise tension pick-up, the signal switching amplifier, devices such as pulsed triggering circuit, electric current servo valve, oil motor, thereby expense is also expensive.
As seen from the above, at present the permanent pull reel of the DC speed regulation that generally adopts and its control system of hydraulic pressure pull reel since all desires direct from the stocking measured tension force signal change and control the coiler mandrel rotating speed, thereby reach the purpose that makes coiling machine keep permanent tension force to stocking, therefore cause the coiling machine control system huge inevitably, the shortcoming that involves great expense, purpose of the present invention, to jump out exactly from the tension force signal of stocking and feed back the design philosophy of controlling the coiler mandrel rotating speed, it is low to design a kind of expense, easy to use, stocking is tension stability when rolling, adopt open loop control form control coiling machine, make coiling machine when stocking is rolling, keep constant scheme to the tension force of stocking, the measure that the present invention takes is to make coiling machine keep permanent tension force to stocking when rolling by the permanent power of controlling coiling machine, and permanent power be controlled in the mechanical engineering be the utmost point easily, for example can adopt by the hydraulic system of permanent power oil motor and can satisfy as executive component.
Foundation of the present invention is, if the linear velocity of supposition stocking in the milling train exit is V, according to technological requirement, V is a constant in the operation of rolling of stocking in certain a time so, and if the tension value of the suffered coiling machine of supposition stocking is T, so according to technological requirement, when rolling, T also should be a steady state value, can find out thus, in certain a time, stocking is at the power N in milling train exit
0=V * T also should be a steady state value, and this performance number also is to drive the required power of reel, should consider that certainly total transmission efficiency η of drive unit is total, drives the required power N of reel so
1=T * V/ η is total, to different-thickness, the stocking of different cultivars, required tension force is inequality, but for each passage of determining, its desired tension force and speed are all determined, be that this driving power is constant the passage planted agent who determines, therefore, as long as we can manage to make the driving power value of coiling machine to keep constant in each rolling pass, so, reel must be constant to the tension value of stocking, the reel of controlling coiling machine keeps permanent performance number in each rolling pass mechanically be not difficult, for example can adopt permanent power oil motor can satisfy as the hydraulic system of executive component, this is because the input power N=PQ/612 η ym of oil motor, wherein P is that the oil motor inlet and outlet pressure is poor, Q is the input flow rate of oil motor, η ym is the oil motor benefit, in general thereby oil motor drives the coiler mandrel rotation by driving reduction box, reel subtracts (efficient that η is kept to reduction box) from the power N volume=Nym/ η that reduction box obtains, therefore as long as Nym is a steady state value, be a constant owing to η subtracts so, so when adopting permanent power oil motor as executive component thus the N volume also be a steady state value owing to batch power N volume=MW
1, wherein M is the torque of reel, W
1Be the rotational angular velocity of reel, and M=TD/2(D/2 for certain in a flash batch radius value, so it is a variable), we know W again
t=2 π/60n
1(n
1Be drum speed), therefore in coiling process, along with the number of turns of stocking on reel increases, batch the linear thereupon increase of radius D/2, because N volume=Nym/ η subtracts=constant, the linearity that will inevitably cause drum speed reduces, Here it is is based upon stepless speed regulation principle on the permanent power drive of the present invention basis, in like manner, and on the power transmission shaft of oil motor output, also can be represented by the formula Nym=M
0W
0, M in the formula
0Be the torque of oil motor axle head, W
0Be oil motor axle head angular speed, when batching radius D/2 increase,, must cause W as long as oil motor power output Nym is constant
0The linear reduction, therefore we are as long as adopt a cover hydraulic control system, can regulate the power output valve within the specific limits, and in a rolling pass, keep permanent power output, the reel that just can guarantee pull reel is permanent tension force to the tension force of stocking, also can reach the effectiveness of permanent pull reel of DC speed regulation and hydraulic pressure pull reel, we find as long as adopt permanent power oil motor can satisfy the requirement that the coiling machine driving power is permanent power as the hydraulic control system of executive component.
The invention is characterized in that by adopting the driving power of controlling coiling machine as the hydraulic control system of executive component with permanent power oil motor be permanent power, is permanent tension force thereby make coiler mandrel to the tension force of stocking.
The present invention is owing to adopt open loop control form, therefore do not need to feed back as DC speed regulation pull reel and the needed signal of hydraulic pressure pull reel with detection tension force, do not need signal conversion amplifying device yet, thereby saved investment cost greatly, and because system is simple, fault rate also greatly reduces, thereby has improved the reliability of equipment greatly.Moreover permanent power control utilizes fluid pressure to carry out among the present invention, and the fluid pressure variation is highstrung in control system, therefore its action effect and response speed are very rapidly, comparing again with present employed coiling machine, because the corresponding minimizing of auxiliary element, thereby also increased the operating space accordingly.
We have designed a cover and have controlled coiling machine by oil motor as the hydraulic control system of executive component on the 4-roller cold rolling mill of Φ 45/ Φ 200 that Kunming Heavy Machine Plant produces at present, select for use ZMN series oil motor as executive component, output constant power, peak power can reach 5 kilowatts, tension value can be regulated arbitrarily in 0～800kg, and each rolling pass internal tension of determining is constant, fluctuation range about 3%, compare with DC control system, cost reduces by 60%, equipment reliability improves greatly, and facility compact, and it is little to take terrain.
The present invention can be applicable to the cold coiling machine of all size, so promotion prospect is considerable.
The present invention can be applicable to the cold coiling machine of all size, and tension adjustment scope and watt level all can determine that devices for taking-up also can be used permanent tension force control principle of the present invention on continuous annealing furnace according to rolling mill practice.
Claims (1)
1, a kind of hydraulic constant-power, stepless speed-regulating and tension-controlled coiling machine.It is characterized in that, be permanent power by adopting the driving power of controlling coiling machine as the hydraulic control system of executive component with permanent power oil motor, is permanent tension force thereby make coiler mandrel to the tension force of stocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102878 CN1020683C (en) | 1990-06-15 | 1990-06-15 | Hydraulic constant-power stepless speed-regulating tension-controlling coiling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102878 CN1020683C (en) | 1990-06-15 | 1990-06-15 | Hydraulic constant-power stepless speed-regulating tension-controlling coiling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1057413A CN1057413A (en) | 1992-01-01 |
| CN1020683C true CN1020683C (en) | 1993-05-19 |
Family
ID=4877760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90102878 Expired - Fee Related CN1020683C (en) | 1990-06-15 | 1990-06-15 | Hydraulic constant-power stepless speed-regulating tension-controlling coiling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020683C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389911B (en) * | 2011-10-18 | 2013-06-12 | 上海中联重科桩工机械有限公司 | Equipment for installing steel wire rope and engineering vehicle |
| CN110502043B (en) * | 2018-05-18 | 2024-05-24 | 伊顿公司 | Dynamic performance and active damping method in web winder tension control system |
-
1990
- 1990-06-15 CN CN 90102878 patent/CN1020683C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057413A (en) | 1992-01-01 |
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| CF01 | Termination of patent right due to non-payment of annual fee |