CN105242744A - Gray code based cam structure and driver controller - Google Patents
Gray code based cam structure and driver controller Download PDFInfo
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- CN105242744A CN105242744A CN201410269816.4A CN201410269816A CN105242744A CN 105242744 A CN105242744 A CN 105242744A CN 201410269816 A CN201410269816 A CN 201410269816A CN 105242744 A CN105242744 A CN 105242744A
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- cam
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- outer rim
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- coupling shaft
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Abstract
The invention provides a gray code based cam structure and a driver controller. The cam structure comprises four layers of cam and is characterized in that central through holes of the four layers of cam are coaxial, the outer rim of each layer of cam comprises at least one bulge which is used for pushing a contact of a high-speed speed so as to enable the high-speed switch to be switched on, and the bulges of the first layer of cam are located at arcs corresponding to parts, which are from 22.5 degrees to 67.5 degrees, from 112.5 degrees to 157.5 degrees, from 202.5 degrees to 247.5 degrees, and from 292.5 degrees to 337.5 degrees, of the outer rim; the bulges of the second layer of cam are located at arcs corresponding to parts, which are from 45 degrees to 135 degrees, and from 225 degrees to 315 degrees, of the outer rim; the bulge of the third layer of cam is located at an arc corresponding to a part, which is from 90 degrees to 270 degrees, of the outer rim; the bulge of the fourth layer of cam is located at an arc corresponding to a part, which is from 180 degrees to 360 degrees, of the outer rim; and 0 degree references of the four layers of cam are the same. According to the cam structure and the driver controller provided by the invention, the abrasion of the switch and the cam structure can be reduced effectively, and driving is ensured to be stable and safe.
Description
Technical field
The present invention relates to mechanical technique, particularly relate to a kind of cam structure based on Gray code and driver controller.
Background technology
Driver controller is the opertaing device of railway locomotive, motor train unit and industrial automation, and the quality of its action directly has influence on the steady manipulation of locomotive and the realization of various operating mode.
Driver controller comprises speed adjusting lever, cam and quick-action switch, when driving, driver pulls speed adjusting lever, speed adjusting lever band moving cam rotates, the outer rim of cam is distributed with multiple projection, when cam rotation makes projection encounter the contact of quick-action switch, contact produces displacement, make quick-action switch conducting, export high level, be equivalent to digital signal 1, when cam rotation makes projection remove from contact, contact produces counteragent power, quick-action switch disconnects, output low level, be equivalent to digital signaling zero, like this, by the diverse location on cam outer rim, projection is set, quick-action switch can be controlled and export different digital signals.In actual applications, driver controller comprises four cams and four quick-action switches, corresponding tetrad, for generation of the signal that sixteen bit is different, speed adjusting lever comprises 16 gears, the corresponding a kind of cam position of each gear of handle, such as, the corresponding binary number 0000 of first gear, the corresponding binary number 0001 of second gear, the corresponding binary number 1111 of 16 gear, table 1 shows binary number corresponding to different gears, Fig. 1 shows the structure of cam corresponding to lowest order, comprise equally distributed eight projections, being turned on or off of quick-action switch can be controlled along with the rotation of cam, four low and high level signals transfer to for rate signal by frequency converter or chopper, thus the control realized locomotive operation quick-action.
Table 1
| Gear | Decimal number | Binary number |
| 1 | 0 | 0000 |
| 2 | 1 | 0001 |
| 3 | 2 | 0010 |
| 4 | 3 | 0011 |
| 5 | 4 | 0100 |
| 6 | 5 | 0101 |
| 7 | 6 | 0110 |
| 8 | 7 | 0111 |
| 9 | 8 | 1000 |
| 10 | 9 | 1001 |
| 11 | 10 | 1010 |
| 12 | 11 | 1011 |
| 13 | 12 | 1100 |
| 14 | 13 | 1101 |
| 15 | 14 | 1110 |
| 16 | 15 | 1111 |
The deficiencies in the prior art part is, speed adjusting lever often mobile one grade, have at least a quick-action switch to disconnect or conducting once, such as, when being converted to the 9th grade (1000) by the 8th grade (0111), the state of four switches all will change, and the opening and closing number of times of quick-action switch is too much, switch reliability can be caused to reduce, affect traffic safety.
Summary of the invention
The invention provides a kind of cam structure based on Gray code and driver controller, in order to solve the problem that in prior art, the quick-action switch switch reliability that opening and closing number of times too much causes when shifting gears reduces.
First aspect of the present invention is to provide a kind of cam structure based on Gray code, comprise four layers of cam, the center through hole of described four layers of cam is coaxial, and the outer rim of every one deck cam comprises at least one for promoting the contact of quick-action switch to make the projection of described quick-action switch conducting, wherein:
The projection of ground floor cam is positioned at circular arc place corresponding to 22.5 ° ~ 67.5 °, 112.5 ° ~ 157.5 °, 202.5 ° ~ 247.5 °, 292.5 ° ~ 337.5 ° of outer rim;
The projection of second layer cam is positioned at 45 ° ~ 135 ° of outer rim and 225 ° ~ 315 ° corresponding circular arc places;
The projection of third layer cam is positioned at circular arc place corresponding to 90 ° ~ 270 ° of outer rim;
The projection of the 4th layer of cam is positioned at circular arc place corresponding to 180 ° ~ 360 ° of outer rim;
Wherein, 0 ° of benchmark of four layers of cam is identical.
Another aspect of the present invention is to provide a kind of driver controller, comprise: the cam structure that speed adjusting lever, coupling shaft, quick-action switch and the invention described above provide, wherein, described four layers of cam to be located in successively on described coupling shaft by center through hole and with described coupling shaft wringing fit, described coupling shaft is connected with described speed adjusting lever, and described four layers of cam match with the contact of described quick-action switch to make the conducting when contact conflicts projection of described quick-action switch.
Further, the xsect of described coupling shaft is polygon, or the xsect of described coupling shaft is circular and described coupling shaft and described four layers of cam interference fit.
Further, described driver controller also comprises: gear train, and described speed adjusting lever is connected with described coupling shaft by described gear train.
Further, described speed adjusting lever comprises 16 gears, and described speed adjusting lever often rotates a gear, and each cam turns over 22.5 °.
In cam structure based on Gray code provided by the invention and driver controller, the projection of every one deck cam is all arranged according to the coded system of Gray code, when can ensure to be switched to next gear from any gear, the outer rim state of a cam is all only had to change, the outer rim state of its excess-three layer cam is constant, therefore the open and-shut mode of a quick-action switch is only had to change, effectively can reduce the number of shocks to quick-action switch, alleviate the wearing and tearing of switch and cam structure, ensure that and drive a vehicle steadily and safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of lowest order cam in prior art;
The structural representation based on ground floor cam in the cam structure of Gray code that Fig. 2 provides for the embodiment of the present invention one;
The structural representation based on second layer cam in the cam structure of Gray code that Fig. 3 provides for the embodiment of the present invention one;
The structural representation based on third layer cam in the cam structure of Gray code that Fig. 4 provides for the embodiment of the present invention one;
The structural representation based on the 4th layer of cam in the cam structure of Gray code that Fig. 5 provides for the embodiment of the present invention one;
The structural representation of the driver controller that Fig. 6 provides for the embodiment of the present invention two.
Symbol description:
1-ground floor cam 2-second layer cam 3-third layer cam
The protruding 6-coupling shaft of 4-the 4th layer of cam 5-
7-quick-action switch 8-contact
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The structural representation based on ground floor cam 1 in the cam structure of Gray code that Fig. 2 provides for the embodiment of the present invention one; The structural representation based on second layer cam 2 in the cam structure of Gray code that Fig. 3 provides for the embodiment of the present invention one; The structural representation based on third layer cam 3 in the cam structure of Gray code that Fig. 4 provides for the embodiment of the present invention one; The structural representation based on the 4th layer of cam 4 in the cam structure of Gray code that Fig. 5 provides for the embodiment of the present invention one.As shown in Figure 2-5, the cam structure that the present embodiment provides, comprises four layers of cam, and the center through hole of described four layers of cam is coaxial, the outer rim of every one deck cam comprises at least one for promoting the contact 8 of quick-action switch 7 to make the projection 5 of quick-action switch 7 conducting, wherein:
The projection 5 of ground floor cam 1 is positioned at circular arc place corresponding to 22.5 ° ~ 67.5 °, 112.5 ° ~ 157.5 °, 202.5 ° ~ 247.5 °, 292.5 ° ~ 337.5 ° of outer rim;
The projection 5 of second layer cam 2 is positioned at 45 ° ~ 135 ° of outer rim and 225 ° ~ 315 ° corresponding circular arc places;
The projection 5 of third layer cam 3 is positioned at circular arc place corresponding to 90 ° ~ 270 ° of outer rim;
The projection 5 of the 4th layer of cam 4 is positioned at circular arc place corresponding to 180 ° ~ 360 ° of outer rim;
Wherein, 0 ° of benchmark of four layers of cam is identical.
In the cam structure that the present embodiment provides, projection 5 on four layers of cam carries out encoding setting according to Gray code, and Gray code belongs to Reliability codes, is a kind of coded system of error minimization, be characterized in, any two adjacent codes only have a bit different.Table 2 shows Gray code corresponding to different cam gears.
Table 2
| Cam gear | Decimal number | Gray code |
| 1 | 0 | 0000 |
| 2 | 1 | 0001 |
| 3 | 2 | 0011 |
| 4 | 3 | 0010 |
| 5 | 4 | 0110 |
| 6 | 5 | 0111 |
| 7 | 6 | 0101 |
| 8 | 7 | 0100 |
| 9 | 8 | 1100 |
| 10 | 9 | 1101 |
| 11 | 10 | 1111 |
| 12 | 11 | 1110 |
| 13 | 12 | 1010 |
| 14 | 13 | 1011 |
| 15 | 14 | 1001 |
| 16 | 15 | 1000 |
According to the coded system of Gray code, the outer rim of four layers of cam arranges corresponding protruding 5 respectively, particularly, one of the corresponding Gray code of every one deck cam, the outer rim of every one deck cam is on average divided into 16 sections of circular arcs, and every section of circular arc is 22.5 °, and speed adjusting lever often rotates a gear, each cam turns over 22.5 °, the corresponding Gray code of every section of circular arc is from the value of 1 grade to 16 grades, and when value is 1, this section of circular arc arranges protruding 5, when value is 0, do not arrange protruding 5.
The lowest order of the corresponding Gray code of ground floor cam 1, as can be seen from Table 1, Gray code lowest order is respectively 0110011001100110 in the value of 1-16 gear, therefore, the the 2nd, 3,6,7,10,11,14,15 section of circular arc in 16 sections of circular arcs of ground floor cam 1 is arranged protruding 5, that is, the projection 5 of ground floor cam 1 is positioned at circular arc place corresponding to 22.5 ° ~ 67.5 °, 112.5 ° ~ 157.5 °, 202.5 ° ~ 247.5 °, 292.5 ° ~ 337.5 ° of outer rim.
The second of the corresponding Gray code of second layer cam 2, known according to table 1, Gray code second is respectively 0011110000111100 in the value of 1-16 gear, therefore, the 3-6 and 11-14 section circular arc of second layer cam 2 arrange protruding 5, that is, the projection 5 of second layer cam 2 is positioned at 45 ° ~ 135 ° of outer rim and 225 ° ~ 315 ° corresponding circular arc places.
In like manner, the projection 5 of third layer cam 3 is positioned at circular arc place corresponding to 90 ° ~ 270 ° of outer rim.The projection 5 of the 4th layer of cam 4 is positioned at circular arc place corresponding to 180 ° ~ 360 ° of outer rim.
In the installation process of four layers of cam, need the 0 ° of alignment ensureing each cam, can guarantee to have between adjacent two gears and only have the outer rim state of one deck cam to change.In the present embodiment, the corresponding tens digit 0 of first gear, i.e. Gray code 0000, the corresponding tens digit 0001 of second gear, when cam structure changes the second gear into by the first gear, only the outer rim state of ground floor cam 1 changes, namely the open and-shut mode of ground floor quick-action switch 7 is only had to change, when cam structure changes third gear (tens digit 2 into by the second gear, corresponding Gray code 0011) time, only the outer rim state of second layer cam 2 changes, namely the open and-shut mode of second layer quick-action switch 7 is only had to change, by that analogy, gear changes each time, only a quick-action switch 7 is produced and impact.
In addition, due in Gray code, maximum number (the decimal system 15, corresponding Gray code 1000) and the minimum number (decimal system 0, corresponding Gray code 0000) between an also only difference, therefore, Gray code is cyclic binary code again, in actual applications, first gear can any one in corresponding 16 tens digits, as long as ensure that the tens digit that each gear is corresponding is all that the corresponding numeral of a upper gear adds one, such as, first gear can corresponding tens digit 7 (corresponding Gray code 0100), the corresponding tens digit 8 (corresponding Gray code 1100) of second gear, the corresponding tens digit 6 (corresponding Gray code 0101) of 16th gear.Which numeral what no matter the first gear was corresponding is, the structure of four layers of cam itself does not change, as long as when mounted, the initial position of four layers of cam all turns over identical angle.
The cam structure based on Gray code that the present embodiment provides, comprise four layers of cam, the projection 5 of every one deck cam is all arranged according to the coded system of Gray code, when can ensure to be switched to next gear from any gear, the outer rim state of a cam is all only had to change, the outer rim state of its excess-three layer cam is constant, therefore the open and-shut mode of a quick-action switch 7 is only had to change, effectively can reduce the number of shocks to quick-action switch 7, alleviate the wearing and tearing of switch and cam structure, ensure that and drive a vehicle steadily and safety.
The structural representation of the driver controller that Fig. 6 provides for the embodiment of the present invention two, as shown in Figure 6, the driver controller that the present embodiment provides, comprise: speed adjusting lever (not shown), coupling shaft 6, quick-action switch 7 and the cam structure described in embodiment one, wherein, four layers of cam to be located in successively on coupling shaft 6 by center through hole and with coupling shaft 6 wringing fit, coupling shaft 6 is connected with speed adjusting lever, four layers of cam match with the contact 8 of quick-action switch 7 to make quick-action switch 7 contact 8 conflict protruding 5 time conducting.
Wherein, quick-action switch 7 can be S826 type quick-action switch, the advantages such as volume is little, lightweight, easy for installation, quick-action that it has.Four road low and high level signals of four quick-action switch 7 outputs, as velocity encoded cine signal, are input to coke oven controller or frequency converter or chopper etc., thus realize the function controlling electric locomotive travelling speed and direction.
The driver controller that the present embodiment provides, coordinate with cam structure the steady control realizing locomotive by speed adjusting lever, coupling shaft 6, quick-action switch 7, wherein cam structure is arranged based on Gray code, effectively can reduce the number of shocks to quick-action switch 7, improves motorcycle safety and stability.
Further, on the basis of above-described embodiment technical scheme, preferably, the xsect of coupling shaft 6 is polygon, or, the xsect of coupling shaft 6 is circular and coupling shaft 6 and four layers of cam interference fit, can be fixed on coupling shaft 6 by four layers of cam better, occurs the phenomenon of skidding when avoiding shifting gears between coupling shaft 6 and cam.
Further, on the basis of above-described embodiment technical scheme, preferably, this driver controller also comprises: gear train, and speed adjusting lever is connected with coupling shaft 6 by gear train.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (6)
1. the cam structure based on Gray code, it is characterized in that, comprise four layers of cam, the center through hole of described four layers of cam is coaxial, the outer rim of every one deck cam comprises at least one for promoting the contact of quick-action switch to make the projection of described quick-action switch conducting, wherein:
The projection of ground floor cam is positioned at circular arc place corresponding to 22.5 ° ~ 67.5 °, 112.5 ° ~ 157.5 °, 202.5 ° ~ 247.5 °, 292.5 ° ~ 337.5 ° of outer rim;
The projection of second layer cam is positioned at 45 ° ~ 135 ° of outer rim and 225 ° ~ 315 ° corresponding circular arc places;
The projection of third layer cam is positioned at circular arc place corresponding to 90 ° ~ 270 ° of outer rim;
The projection of the 4th layer of cam is positioned at circular arc place corresponding to 180 ° ~ 360 ° of outer rim;
Wherein, 0 ° of benchmark of four layers of cam is identical.
2. a driver controller, it is characterized in that, comprise: the cam structure described in speed adjusting lever, coupling shaft, quick-action switch and claim 1, wherein, described four layers of cam to be located in successively on described coupling shaft by center through hole and with described coupling shaft wringing fit, described coupling shaft is connected with described speed adjusting lever, and described four layers of cam match with the contact of described quick-action switch to make the conducting when contact conflicts projection of described quick-action switch.
3. driver controller according to claim 2, is characterized in that, the xsect of described coupling shaft is polygon.
4. driver controller according to claim 2, is characterized in that, the xsect of described coupling shaft is circular, and described coupling shaft and described four layers of cam interference fit.
5. the driver controller according to any one of claim 2 ~ 4, is characterized in that, also comprises: gear train, and described speed adjusting lever is connected with described coupling shaft by described gear train.
6. the driver controller according to any one of claim 2 ~ 4, is characterized in that, described speed adjusting lever comprises 16 gears, and described speed adjusting lever often rotates a gear, and each cam turns over 22.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269816.4A CN105242744A (en) | 2014-06-17 | 2014-06-17 | Gray code based cam structure and driver controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269816.4A CN105242744A (en) | 2014-06-17 | 2014-06-17 | Gray code based cam structure and driver controller |
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| CN105242744A true CN105242744A (en) | 2016-01-13 |
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| CN201410269816.4A Pending CN105242744A (en) | 2014-06-17 | 2014-06-17 | Gray code based cam structure and driver controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032242A (en) * | 2018-07-13 | 2018-12-18 | 株洲时菱交通设备有限公司 | A kind of driver controller calibration method and driver controller |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2346648Y (en) * | 1998-12-28 | 1999-11-03 | 西安沙尔特宝电气有限公司 | Driver's controller |
| JP2004156525A (en) * | 2002-11-06 | 2004-06-03 | Toyota Motor Corp | Control device of internal combustion having variable valve unit |
| CN1639487A (en) * | 2002-02-27 | 2005-07-13 | 约翰尼斯海登海恩博士股份有限公司 | Gear system and rotary transducer provided with said gear system |
| CN2938251Y (en) * | 2006-07-26 | 2007-08-22 | 何曜华 | Radio frequency electromechanical direct meter reader |
| CN101055478A (en) * | 2006-04-10 | 2007-10-17 | 戴利民 | Driver controller adopting non-contact type electronic switch |
| CN201663067U (en) * | 2010-04-28 | 2010-12-01 | 西安开天铁路牵引电器有限公司 | Direct-acting vigilance device for driver controller |
| CN201764980U (en) * | 2010-09-07 | 2011-03-16 | 株洲威森机车配件有限公司 | Two-way Gray code magnetic encoder |
| CN202518111U (en) * | 2012-04-27 | 2012-11-07 | 成都茂源科技有限公司 | Speed-regulating and direction-regulating mechanically interlocking device of speed regulator |
| CN102856093A (en) * | 2012-08-21 | 2013-01-02 | 无锡市拓发自控设备有限公司 | Cam controller with mechanical limit, forced disconnection and dynamic monitoring functions |
| CN103308287A (en) * | 2012-03-08 | 2013-09-18 | 南车洛阳机车有限公司 | Rotation speed driving device for speed governor |
| CN203930575U (en) * | 2014-06-17 | 2014-11-05 | 北车兰州机车有限公司 | Cam structure based on Gray code and driver controller |
-
2014
- 2014-06-17 CN CN201410269816.4A patent/CN105242744A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2346648Y (en) * | 1998-12-28 | 1999-11-03 | 西安沙尔特宝电气有限公司 | Driver's controller |
| CN1639487A (en) * | 2002-02-27 | 2005-07-13 | 约翰尼斯海登海恩博士股份有限公司 | Gear system and rotary transducer provided with said gear system |
| JP2004156525A (en) * | 2002-11-06 | 2004-06-03 | Toyota Motor Corp | Control device of internal combustion having variable valve unit |
| CN101055478A (en) * | 2006-04-10 | 2007-10-17 | 戴利民 | Driver controller adopting non-contact type electronic switch |
| CN2938251Y (en) * | 2006-07-26 | 2007-08-22 | 何曜华 | Radio frequency electromechanical direct meter reader |
| CN201663067U (en) * | 2010-04-28 | 2010-12-01 | 西安开天铁路牵引电器有限公司 | Direct-acting vigilance device for driver controller |
| CN201764980U (en) * | 2010-09-07 | 2011-03-16 | 株洲威森机车配件有限公司 | Two-way Gray code magnetic encoder |
| CN103308287A (en) * | 2012-03-08 | 2013-09-18 | 南车洛阳机车有限公司 | Rotation speed driving device for speed governor |
| CN202518111U (en) * | 2012-04-27 | 2012-11-07 | 成都茂源科技有限公司 | Speed-regulating and direction-regulating mechanically interlocking device of speed regulator |
| CN102856093A (en) * | 2012-08-21 | 2013-01-02 | 无锡市拓发自控设备有限公司 | Cam controller with mechanical limit, forced disconnection and dynamic monitoring functions |
| CN203930575U (en) * | 2014-06-17 | 2014-11-05 | 北车兰州机车有限公司 | Cam structure based on Gray code and driver controller |
Non-Patent Citations (2)
| Title |
|---|
| 葛党朝，何鹏: "《城市轨道交通车辆牵引及供电系统》", 31 August 2013 * |
| 马林森: ""轨道交通列车司机控制器概述"", 《城市轨道交通研究》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032242A (en) * | 2018-07-13 | 2018-12-18 | 株洲时菱交通设备有限公司 | A kind of driver controller calibration method and driver controller |
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Address after: 730050 Wuwei Road, Gansu, China, No. 63, No. Applicant after: CNR LANZHOU LOCOMOTIVE CO., LTD. Address before: 730050 Wuwei Road, Gansu, China, No. 63, No. Applicant before: CNR Lanzhou Locomotive Co., Ltd. |
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Application publication date: 20160113 |