CN102815566A - Three-roller mechanism and method for instantaneously increasing relative rotate speed of variable speed driving roller thereof - Google Patents
Three-roller mechanism and method for instantaneously increasing relative rotate speed of variable speed driving roller thereof Download PDFInfo
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- CN102815566A CN102815566A CN2012102506610A CN201210250661A CN102815566A CN 102815566 A CN102815566 A CN 102815566A CN 2012102506610 A CN2012102506610 A CN 2012102506610A CN 201210250661 A CN201210250661 A CN 201210250661A CN 102815566 A CN102815566 A CN 102815566A
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Abstract
The invention discloses a three-roller mechanism and a method for instantaneously increasing relative rotate speed of a variable speed driving roller of the three-roller mechanism. The three-roller mechanism is mainly characterized by arranging high speed and low speed driving wheels, wherein the speed ratio of the two driving wheels is matched with the ratio of rotate speed change of the variable speed driving roller. At the same time, only one driving wheel and the variable speed driving roller form a transmission relation, and the two driving wheels and two reference driving rollers form a linkage body rotating synchronously. The three-roller mechanism and the method provided by the invention have the advantages that once the variable speed driving roller and the high speed driving wheel form a transmission relation, the speed ratio of the variable speed driving roller relative to the two reference driving rollers can be increased immediately to a predetermined speed ratio, and the time needed is zero. One the other hand, the high speed driving wheel can drive the variable speed driving roller to rotate in an accelerative manner with larger kinetic energy so that the absolute rotate speed of the variable speed driving roller is improved remarkably instantaneously.
Description
Technical field
The present invention relates to clip the three-roller structure that same Passive part rotates, particularly how to make the method for the relative rotation speed moment raising of the variable speed drive (VSD) roller in the three-roller structure by three driven rollers.
Background technology
The three-roller structure is a kind of three driven rollers that have, and clips same Passive part together by these three driven rollers, and drives the mechanism that this Passive part rotates by these three driven rollers.In the mechanical equipment that is equipped with the three-roller structure, often need will be wherein driven roller make the variable speed drive (VSD) roller of variable-ratio, make the variable speed drive (VSD) roller can in very short time, significantly improve, to realize certain purpose with respect to the rotating speed of other two driven rollers.For example be used for producing the rewinding machine of paper product such as toilet paper at some; Just adopted the three-roller structure with variable speed drive (VSD) roller, utilized this three-roller structure that the paper rewinding is become paper roll, three driven rollers clip paper roll together and rotate; After the paper roll moulding; Make rotating speed moment of variable speed drive (VSD) roller in the three-roller structure be higher than the rotating speed of other two driven rollers, pull apart with this paper, and make paper roll between three driven rollers, fly out fast the paper roll afterbody.Yet in present known three-roller structure, its variable speed drive (VSD) roller promotes fast inadequately with respect to the rotating speed of other two driven rollers, often causes the equipment can not normal operation.For example in above-mentioned rewinding machine, normal relative rotation speed owing to the variable speed drive (VSD) roller in the three-roller structure promotes slower, causes thoroughly pulling apart the paper of paper roll afterbody, causes rewinding machine by forced-stopping machine.
Summary of the invention
The present invention seeks to promote fast inadequately problem, a kind of method that makes the relative rotation speed moment raising of the variable speed drive (VSD) roller in the three-roller structure is provided to the relative rotation speed of the variable speed drive (VSD) roller in the existing three-roller structure.
Correspondingly, another object of the present invention provides a kind of three-roller structure, to realize said method.
The main technical schemes that the inventive method is taked is; Make the method for the relative rotation speed moment raising of the variable speed drive (VSD) roller in the three-roller structure, comprise that three clip the driven rollers that same Passive part rotates, in these three driven rollers; Wherein two driven rollers are benchmark driven rollers; A remaining driven roller is the variable speed drive (VSD) roller that needs the conversion rotating speed, through the rotating speed of following method moment raising variable speed drive (VSD) roller with respect to the accurate driven roller of other two foundation, two drive wheels that rotating speed is different is set; The revolution ratio of these two drive wheels; Be complementary with the rotation speed change ratio of variable speed drive (VSD) roller, said two drive wheels have only one of them and variable speed drive (VSD) roller to constitute drive connection at synchronization, before the relative rotation speed that improves the variable speed drive (VSD) roller; The slower drive wheel of rotating speed in variable speed drive (VSD) roller and said two drive wheels constitutes drive connection; Make the variable speed drive (VSD) roller clip same Passive part and rotate that when needing moment to improve the relative rotation speed of variable speed drive (VSD) roller, moment is switched the drive connection between variable speed drive (VSD) roller and said two drive wheels with the accurate driven roller of two foundation; Make in variable speed drive (VSD) roller and said two drive wheels rotating speed faster drive wheel constitute drive connection; With the rotating speed of this moment raising variable speed drive (VSD) roller with respect to the accurate driven roller of other two foundation, the characteristics of said method also are, make the accurate driven roller of said two drive wheels and two foundation form an interlock body that rotates synchronously.
Said method also can be taked following attached technical scheme.
The driving wheel group of said two drive wheels through constituting by a plurality of intermeshing power wheels; Constitute the interlock body that rotates synchronously with the accurate driven roller of two foundation; In this interlock body, all constitute the quality summation of the rotor of meshing relation, are the twice of the quality of variable speed drive (VSD) roller at least.
Said driving wheel group is connected with other swing type mechanisms in the applied equipment of three-roller structure, forms an interlock body that rotates synchronously.
The method that moment is switched the drive connection between variable speed drive (VSD) roller and said two drive wheels is; Between variable speed drive (VSD) roller and said two drive wheels, magnetic clutch is set respectively, switches the drive connection between variable speed drive (VSD) roller and said two drive wheels through engagement and the released state of controlling two magnetic clutchs.
Switch to the process of engagement from released state at said magnetic clutch; Magnetic clutch is imposed the forward high potential that is higher than its rated operational voltage; Accelerate the engagement action of magnetic clutch with this, return to rated operational voltage afterwards again, make magnetic clutch keep engagement; Switch to the process of released state from engagement at said magnetic clutch; Magnetic clutch is imposed the reverse voltage opposite with engagement; Accelerate the separating action of magnetic clutch with this, stop immediately more afterwards making magnetic clutch keep released state to the magnetic clutch power supply.
Switch to from engagement the process of released state at magnetic clutch,, be higher than the absolute value of the rated operational voltage of magnetic clutch the absolute value of the reverse voltage that magnetic clutch applied.
On the other hand; The main technical schemes that three-roller structure of the present invention is taked is; The three-roller structure comprises that three clip the driven roller that same Passive part rotates, and wherein two driven rollers are benchmark driven rollers, and a remaining driven roller is to need moment to improve its variable speed drive (VSD) roller with respect to the rotating speed of benchmark driven roller; In the rotating shaft of variable speed drive (VSD) roller, being with can be around the high-speed driving wheel and the driven at low speed wheel of this rotating shaft idle running; The variable speed drive (VSD) roller constitutes drive connection with high-speed driving wheel and driven at low speed wheel respectively through two magnetic clutchs, and these two magnetic clutchs have only one of them to be in engagement at synchronization, described high-speed driving wheel and the driving wheel group of driven at low speed wheel through being made up of a plurality of intermeshing power wheels; Constitute the interlock body that rotates synchronously with the accurate driven roller of two foundation; And the transmitting ratio of each power wheel of inside of this driving wheel group, make the revolution ratio that high-speed driving wheel and driven at low speed are taken turns, be complementary with the rotation speed change ratio of variable speed drive (VSD) roller.
Above-mentioned three-roller structure also can be taked following attached technical scheme.
By said high-speed driving wheel, said driven at low speed wheel, said driving wheel group; And in the interlock body of the synchronous rotation that constituted of the accurate driven roller of said two foundation; All constitute the quality summation of the rotor of meshing relation, are the twice of the quality of variable speed drive (VSD) roller at least.
Said driving wheel group is connected with other swing type mechanisms in the applied equipment of three-roller structure, forms an interlock body that rotates synchronously.
Useful technique effect of the present invention is: because the accurate driven roller of said two drive wheels and two foundation forms an interlock body that rotates synchronously; Therefore; From constituting drive connection with the driven at low speed wheel, moment, the variable speed drive (VSD) roller was with respect to the raising of the rotating speed of the accurate driven roller of two foundation when switching to high-speed driving wheel formation drive connection at the variable speed drive (VSD) roller; Must equal the revolution ratio of high-speed driving wheel and driven at low speed wheel; And the revolution ratio of high-speed driving wheel and driven at low speed wheel is changeless, and rotating speed absolute with it is irrelevant, as long as variable speed drive (VSD) roller and the higher drive wheel of rotating speed have constituted drive connection; The variable speed drive (VSD) roller just can be promoted to predetermined revolution ratio at once with respect to the revolution ratio of the accurate driven roller of two foundation, and required time is zero; On the other hand; Because driven at low speed wheel and high-speed driving wheel have formed the interlock body of synchronous rotation jointly with the accurate driven roller of two foundation; Therefore the rotational kinetic energy of high-speed driving wheel is equivalent to the kinetic energy sum of the accurate driven roller of two foundation at least; Thereby make that in speed-raising the high-speed driving wheel can drive the variable speed drive (VSD) roller with bigger kinetic energy and quicken to rotate, and the absolute rotating speed of variable speed drive (VSD) roller can be significantly improved in moment.
Description of drawings
Fig. 1 is that the three-roller structure clips the scheme drawing that Passive part rotates;
Fig. 2 is the drive connection scheme drawing between three driven rollers in the three-roller structure.
The specific embodiment
Three-roller structure of the present invention is as shown in Figure 1, comprises that three clip the driven roller that same Passive part 4 rotates, and wherein two is benchmark driven roller 1,2, and remaining one is variable speed drive (VSD) roller 3.The three-roller structure the concrete function that will accomplish, and what Passive part 4 specifically is, decides according to the applied concrete equipment of three-roller structure; For example; If three-roller structure shown in Figure 1 is applied in the rewinding machine of production paper product, Passive part 4 so shown in Figure 1 is exactly a paper roll, and this paper roll is that 1,2 and variable speed drive (VSD) rollers 3 of benchmark driven roller form the paper rewinding together by two; And after coil paper volume is accomplished in rewinding; Also can improve variable speed drive (VSD) roller 3 rotating speeds, the paper of paper roll afterbody pulled apart, and paper roll is flown out in the middle of three driven rollers through moment with respect to the accurate driven roller 1,2 of other two foundation.
Fig. 2 shows the drive connection between three driven rollers among Fig. 1.As shown in Figure 2; In the rotating shaft of variable speed drive (VSD) roller 3, being with can be around the driven at low speed wheel 5 and high-speed driving wheel 6 of this rotating shaft idle running; Between the rotating shaft of driven at low speed wheel 5 and variable speed drive (VSD) roller 3 magnetic clutch 7 is installed, between the rotating shaft of high-speed driving wheel 6 and variable speed drive (VSD) roller 3 another magnetic clutch 8 is installed, this two magnetic clutchs 7,8 have only one of them to be in engagement at synchronization; Make variable speed drive (VSD) roller 3 or constitute drive connections with driven at low speed wheel 5; Drive low speed rotation by driven at low speed wheel 5, or constitute drive connection, drive high speed revolution by high-speed driving wheel 6 with high-speed driving wheel 6.Two magnetic clutchs 7,8 can be assemblied in the same shell.
Frame of broken lines among Fig. 2 is represented the driving wheel group 9 be made up of a plurality of intermeshing power wheels, and high-speed driving wheel 6 and driven at low speed wheel 5 constitute the interlock body that rotates synchronously through this driving wheel group 9 with the accurate driven roller 1,2 of two foundation.The transmitting ratio of each power wheel of inside of driving wheel group 9; Should make high-speed driving wheel 6 and driven at low speed take turns 5 revolution ratio; Be complementary with the rotation speed change ratio of variable speed drive (VSD) roller 3, for example, suppose to require the rotating speed of variable speed drive (VSD) roller 3 with respect to the accurate driven roller 1,2 of two foundation; 1:1 by original brings up to 4:1; That is to say the rotation speed change that requires variable speed drive (VSD) roller 3 than being 4:1, the transmitting ratio of each power wheel of inside of driving wheel group 9 should make that the high-speed driving wheel 6 and the revolution ratio of driven at low speed wheel 5 are exactly 4:1 so.
Below in conjunction with Fig. 1 and Fig. 2 the inventive method is described, that is how is made the relative rotation speed moment raising of the variable speed drive (VSD) roller 3 in the three-roller structure.
Before the relative rotation speed that improves variable speed drive (VSD) roller 3; Magnetic clutch 8 separates, and another magnetic clutch 7 engagements make variable speed drive (VSD) roller 3 and driven at low speed wheel 5 constitute drive connection; Variable speed drive (VSD) roller 3 is taken turns 5 driven rotary by driven at low speed; At this moment, variable speed drive (VSD) roller 3 clips same Passive part 4 with the accurate driven roller 1,2 of two foundation and rotates, and high-speed driving wheel 6 drives idle running by driving wheel group 9; When needing moment to improve the relative rotation speed of variable speed drive (VSD) roller 3, magnetic clutch 7 moments separation, magnetic clutch 8 moments engagement; Make variable speed drive (VSD) roller 3 and high-speed driving wheel 6 constitute drive connection, variable speed drive (VSD) roller 3 is taken turns 6 driven rotary by high-speed driving, after the conversion; Even the absolute rotating speed of high-speed driving wheel 6 is dragged slowly by variable speed drive (VSD) roller 3; Also can take turns 6 and form an interlock body that rotates synchronously, and can not reduce the rotating speeds of high-speed driving wheel 6, that is to say with respect to driven at low speed wheel 5 with the accurate driven roller 1,2 of driven at low speed wheel 5 and two foundation because of high-speed driving; As long as variable speed drive (VSD) roller 3 has constituted drive connection with high-speed driving wheel 6; Variable speed drive (VSD) roller 3 just can be promoted to the intrinsic revolution ratio between high-speed driving wheel 6 and the driven at low speed wheel 5 in moment with respect to the revolution ratio of the accurate driven roller 1,2 of two foundation, and required time is zero.
As preferred forms; By high-speed driving wheel 6, driven at low speed wheel 5, driving wheel group 9; And in the interlock body of the synchronous rotation that constituted of the accurate driven roller 1,2 of two foundation, all constitute the quality summation of the rotor of meshing relations, are the twice of the quality of variable speed drive (VSD) roller 3 at least.Can make like this high-speed driving wheel 6 to drive variable speed drive (VSD) roller 3 and quicken that high-speed driving wheel 6 can be dragged slowly by variable speed drive (VSD) roller 3 hardly, and the absolute rotating speed of variable speed drive (VSD) roller 3 can be greatly improved in moment with great kinetic energy.
As further improvement, preferably driving wheel group 9 is connected with other swing type mechanisms in the applied equipment of three-roller structure, form an interlock body that rotates synchronously.So; Can make full use of the original mechanism in the applied equipment of three-roller structure; And needn't too much increase the quality of the rotor in high-speed driving wheel accurate driven roller 1,2 of 6, two foundation and the driving wheel group 9 in order to increase the kinetic energy of high-speed driving wheel 6, both guaranteed that high-speed driving wheel 6 can improve the absolute rotating speed of variable speed drive (VSD) roller with bigger kinetic energy; Avoid increasing the weight of whole equipment again for this reason and too much, can also reduce the manufacturing cost of whole equipment.For example; At the rewinding machine that is used for producing paper product such as toilet paper, rewinding machine itself just has and numerously is used to pull paper or changes the paper direct of travel, perhaps realizes the live-rollers of other functions; Like holding paper roller, dancing roll, friction roller etc.; With these live-rollerss and the swing type mechanism that mechanism constituted that drives these live-rollerss, be connected with driving wheel group 9 in the three-roller structure shown in Figure 2, form an interlock body that rotates synchronously; Just can make full use of the original mechanism of rewinding machine increases the kinetic energy of high-speed driving wheel 6; Both guaranteed that high-speed driving wheel 6 can improve the absolute rotating speed of variable speed drive (VSD) roller with bigger kinetic energy, avoided increasing whole rewinding machine weight again for this reason and too much, can also reduce the manufacturing cost of whole rewinding machine.
In order to guarantee that two magnetic clutchs 7,8 can switch at a terrific speed between engagement and released state; As further improvement; Switch to from released state the process of engagement at magnetic clutch, can impose the forward high potential that is higher than its rated operational voltage, accelerate the engagement action of magnetic clutch with this to magnetic clutch; Supply power to magnetic clutch with rated operational voltage more afterwards, make magnetic clutch keep engagement; Switch to the process of released state from engagement at magnetic clutch; Can impose the reverse voltage opposite to magnetic clutch with engagement; Accelerate the separating action of magnetic clutch with this, stop immediately more afterwards making magnetic clutch keep released state to the magnetic clutch power supply.Switch to the process of released state from engagement at magnetic clutch; Absolute value to the reverse voltage that magnetic clutch applied; The absolute value that preferably is higher than the rated operational voltage of magnetic clutch can further be accelerated the separating action of magnetic clutch like this.
Claims (9)
1. make the method for the relative rotation speed moment raising of the variable speed drive (VSD) roller in the three-roller structure; Comprise that three clip the driven roller that same Passive part (4) rotates; In these three driven rollers; Wherein two driven rollers are benchmark driven roller (1,2); A remaining driven roller is the variable speed drive (VSD) roller (3) that needs the conversion rotating speed; Through the rotating speed of following method moment raising variable speed drive (VSD) roller (3), two drive wheels that rotating speed is different are set, the revolution ratio of these two drive wheels with respect to the accurate driven roller of other two foundation (1,2); Be complementary with the rotation speed change ratio of variable speed drive (VSD) roller (3); Said two drive wheels have only one of them and variable speed drive (VSD) roller (3) to constitute drive connection at synchronization, and before the relative rotation speed that improves variable speed drive (VSD) roller (3), variable speed drive (VSD) roller (3) constitutes drive connection with the slower drive wheel (5) of the rotating speed in said two drive wheels; Making variable speed drive (VSD) roller (3) clip same Passive part (4) with the accurate driven roller of two foundation (1,2) rotates; When needing moment to improve the relative rotation speed of variable speed drive (VSD) roller (3), moment is switched the drive connection between variable speed drive (VSD) roller (3) and said two drive wheels, makes rotating speed drive wheel (6) the formation drive connection faster in variable speed drive (VSD) roller (3) and said two drive wheels; With the rotating speed of this moment raising variable speed drive (VSD) roller (3), it is characterized in that: make said two drive wheels (5,6) and the accurate driven roller of two foundation (1,2) form an interlock body that rotates synchronously with respect to the accurate driven roller of other two foundation (1,2).
2. the method that makes the relative rotation speed moment raising of the variable speed drive (VSD) roller in the three-roller structure as claimed in claim 1; It is characterized in that: the driving wheel group (9) of said two drive wheels (5,6) through constituting by a plurality of intermeshing power wheels; Constitute the interlock body that rotates synchronously with the accurate driven roller of two foundation (1,2); In this interlock body, all constitute the quality summation of the rotor of meshing relation, are the twice of the quality of variable speed drive (VSD) roller (3) at least.
3. the method that makes the relative rotation speed moment raising of the variable speed drive (VSD) roller in the three-roller structure as claimed in claim 1; It is characterized in that: said driving wheel group (9) is connected with other swing type mechanisms in the applied equipment of three-roller structure, forms an interlock body that rotates synchronously.
4. the method that makes the relative rotation speed moment raising of the variable speed drive (VSD) roller in the three-roller structure as claimed in claim 1; It is characterized in that: the method that moment is switched the drive connection between variable speed drive (VSD) roller (3) and said two drive wheels (5,6) is; Between variable speed drive (VSD) roller (3) and said two drive wheels (5,6), magnetic clutch is set respectively, switches the drive connection between variable speed drive (VSD) roller (3) and said two drive wheels through engagement and the released state of controlling two magnetic clutchs.
5. the method that makes the relative rotation speed moment raising of the variable speed drive (VSD) roller in the three-roller structure as claimed in claim 4; It is characterized in that: switch to the process of engagement from released state at said magnetic clutch; Magnetic clutch is imposed the forward high potential that is higher than its rated operational voltage; Accelerate the engagement action of magnetic clutch with this, return to rated operational voltage afterwards again, make magnetic clutch keep engagement; Switch to the process of released state from engagement at said magnetic clutch; Magnetic clutch is imposed the reverse voltage opposite with engagement; Accelerate the separating action of magnetic clutch with this, stop immediately more afterwards making magnetic clutch keep released state to the magnetic clutch power supply.
6. the method that makes the relative rotation speed moment raising of the variable speed drive (VSD) roller in the three-roller structure as claimed in claim 5; It is characterized in that: switch to the process of released state from engagement at magnetic clutch; To the absolute value of the reverse voltage that magnetic clutch applied, be higher than the absolute value of the rated operational voltage of magnetic clutch.
7. three-roller structure; Comprise that three clip the driven roller that same Passive part (4) rotates; Wherein two driven rollers are benchmark driven roller (1,2); A remaining driven roller is to need moment to improve its variable speed drive (VSD) roller (3) with respect to the rotating speed of benchmark driven roller; In the rotating shaft of variable speed drive (VSD) roller (3), being with can be around the high-speed driving wheel (6) and the driven at low speed wheel (5) of this rotating shaft idle running; Variable speed drive (VSD) roller (3) constitutes drive connection with high-speed driving wheel (6) and driven at low speed wheel (5) respectively through two magnetic clutchs, and these two magnetic clutchs have only one of them to be in engagement at synchronization, it is characterized in that: described high-speed driving wheel (6) and driven at low speed wheel (5) driving wheel group (9) through being made up of a plurality of intermeshing power wheels; Constitute the interlock body that rotates synchronously with the accurate driven roller of two foundation (1,2); And the transmitting ratio of each power wheel of inside of this driving wheel group (9), make high-speed driving wheel (6) and driven at low speed take turns the revolution ratio of (5), be complementary with the rotation speed change ratio of variable speed drive (VSD) roller (3).
8. three-roller structure as claimed in claim 7; It is characterized in that: taking turns (5), said driving wheel group (9) by said high-speed driving wheel (6), said driven at low speed; And in the interlock body of the synchronous rotation that constituted of the accurate driven roller of said two foundation (1,2); All constitute the quality summation of the rotor of meshing relation, are the twice of the quality of variable speed drive (VSD) roller (3) at least.
9. three-roller structure as claimed in claim 7 is characterized in that: said driving wheel group (9) is connected with other swing type mechanisms in the applied equipment of three-roller structure, forms an interlock body that rotates synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250661.0A CN102815566B (en) | 2012-07-19 | 2012-07-19 | Three-roller structure and improve the method for relative rotation speed of its variable speed drive (VSD) roller instantaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250661.0A CN102815566B (en) | 2012-07-19 | 2012-07-19 | Three-roller structure and improve the method for relative rotation speed of its variable speed drive (VSD) roller instantaneously |
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| Publication Number | Publication Date |
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| CN102815566A true CN102815566A (en) | 2012-12-12 |
| CN102815566B CN102815566B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210250661.0A Active CN102815566B (en) | 2012-07-19 | 2012-07-19 | Three-roller structure and improve the method for relative rotation speed of its variable speed drive (VSD) roller instantaneously |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100186A (en) * | 1994-02-23 | 1995-03-15 | 余蜀翔 | Full-automatic change speed gear box |
| CN1292854A (en) * | 1998-03-09 | 2001-04-25 | 鲍德温奥莫尔艾特伯格公司 | Device relating to roll stands |
| US20020033320A1 (en) * | 2000-09-19 | 2002-03-21 | Hiroki Matsuoka | Conveyor roller drive device and drive roller assembly |
| CN2743622Y (en) * | 2004-04-06 | 2005-11-30 | 张军 | Device for changing rotating direction to obtain single direction different rotating speed |
| CN1971083A (en) * | 2006-11-28 | 2007-05-30 | 张�雄 | Mechanical transmission and speed changing gear |
| CN202829055U (en) * | 2012-07-19 | 2013-03-27 | 佛山市宝索机械制造有限公司 | Three-roller mechanism |
-
2012
- 2012-07-19 CN CN201210250661.0A patent/CN102815566B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100186A (en) * | 1994-02-23 | 1995-03-15 | 余蜀翔 | Full-automatic change speed gear box |
| CN1292854A (en) * | 1998-03-09 | 2001-04-25 | 鲍德温奥莫尔艾特伯格公司 | Device relating to roll stands |
| US20020033320A1 (en) * | 2000-09-19 | 2002-03-21 | Hiroki Matsuoka | Conveyor roller drive device and drive roller assembly |
| CN2743622Y (en) * | 2004-04-06 | 2005-11-30 | 张军 | Device for changing rotating direction to obtain single direction different rotating speed |
| CN1971083A (en) * | 2006-11-28 | 2007-05-30 | 张�雄 | Mechanical transmission and speed changing gear |
| CN202829055U (en) * | 2012-07-19 | 2013-03-27 | 佛山市宝索机械制造有限公司 | Three-roller mechanism |
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| Publication number | Publication date |
|---|---|
| CN102815566B (en) | 2015-10-21 |
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