CN102494048A - Synchronous structure for twin countershaft transmission - Google Patents
Synchronous structure for twin countershaft transmission Download PDFInfo
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- CN102494048A CN102494048A CN2011103905187A CN201110390518A CN102494048A CN 102494048 A CN102494048 A CN 102494048A CN 2011103905187 A CN2011103905187 A CN 2011103905187A CN 201110390518 A CN201110390518 A CN 201110390518A CN 102494048 A CN102494048 A CN 102494048A
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- synchronization device
- conical surface
- main shaft
- synchronous
- shift gear
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Abstract
The invention discloses a synchronous structure for a twin countershaft transmission. The synchronous structure comprises a main shaft, a synchronizer and two tap-position gears, wherein the synchronizer is arranged on the main shaft; each of two tap-position gears is provided with one boss extending into the inner circle of a corresponding synchronizer taper ring; at a neutral position, the inner circle surfaces of the synchronizer taper rings contact the bosses; and when a synchronous taper surfaces on the synchronizer taper rings contact the synchronous taper surfaces on the tap-position gears, the inner circle surfaces of the synchronizer taper rings do not contact the bosses on the tap-position gears. According to the synchronous structure for a twin countershaft transmission, the eccentricity of the synchronizer taper rings and the tap-position gears is controlled; at the neutral position, the synchronous taper surfaces of the synchronizer taper rings do not contact the synchronous taper surfaces of the tap-position gears; therefore, taper surfaces cannot be worn at the neutral position; and the service life is long. Because of the special connection structure of a sliding disk and the main shaft, self energizing effort can be generated, the shifting force is lowered, and the synchronous structure can conveniently shift.
Description
Technical field
The present invention relates to a kind of speed changer that is used for two jack shaft structures, particularly a kind of synchronization structure of twin countershaft transmission.
Background technique
The speed changer of two jack shaft structures has advantages such as compact structure, transmitting torque is big, the life-span is long, is widely used in medium and heavy truck.Two jack shaft structure speed changers great majority use the sliding sleeves gearshift, and the sliding sleeve gearshift makes the gearshift difficulty, to driver requested higher.The twin countershaft transmission of the existing tape synchronizer of producing, no matter be pin-type synchronizer or lock ring type synchronizer, its synchronizer life-span is not too satisfactory.
The lockpin-type synchronization structure of the twin countershaft transmission that exists at present comprises main shaft, is arranged on synchronizer and two shift gears on the main shaft; Synchronizer comprises two synchronization device cone rings that are used for the slider disc that is connected with selector fork and are positioned at the slider disc both sides; Two synchronization device cone rings are fixedly connected, are connected to float in main shaft diameter on main shaft is axial with slider disc; The periphery of described synchronization device cone ring is the synchronous conical surface; Described shift gear be provided with synchronization device cone ring on the synchronous synchronous conical surface that matches of the conical surface, the synchronous conical surface on the shift gear is an inner headed face.Slider disc is used to receive the driving force of selector fork, thereby drives the corresponding shift gear motion of Synchronizer Cone hoop, the conical surface is contacted and gradually realization be synchronized with the movement.When neutral; Since synchronization device cone ring and slider disc in main shaft diameter to being unsteady the connection; Synchronization device cone ring can produce the off-centre with shift gear under the effect of gravity and swing; The synchronous conical surface that synchronization device cone ring takes place easily contacts with the synchronous conical surface of shift gear, causes wearing and tearing, influences the working life of synchronizer.
Summary of the invention
The technical problem that the present invention will solve is: the synchronization structure that a kind of twin countershaft transmission of long service life is provided.
In order to solve the problems of the technologies described above; The present invention includes main shaft, be arranged on synchronizer and two shift gears on the main shaft; Described synchronizer comprises two synchronization device cone rings that are used for the slider disc that is connected with selector fork and are positioned at the slider disc both sides; Two synchronization device cone rings and slider disc are fixedly connected, are connected to float in main shaft diameter on axially at main shaft, and the male cone (strobilus masculinus) of described synchronization device cone ring is the synchronous conical surface, described shift gear be provided with synchronization device cone ring on the synchronous conical surface that matches of the conical surface synchronously; The synchronous conical surface on the shift gear is an inner conical surface; It is characterized in that: respectively be provided with a boss in the interior circle that extend into respective synchronization device conical ring on two shift gears, during neutral, the inner headed face of synchronization device cone ring contacts with boss; When synchronously the conical surface is when synchronous conical surface face on the shift gear contacts on the synchronization device cone ring, the inner headed face of synchronization device cone ring does not contact with boss on the shift gear.
Boss on the described shift gear is the cylinder table with the main shaft coaxial line; Boss on the described shift gear is the cylinder table with the main shaft coaxial line; The inner headed face of described synchronization device cone ring is the cylindrical hole face of diameter greater than the diameter of the boss on the corresponding shift gear, the difference of the diameter of cylindrical hole and cylinder table during less than neutral on the synchronization device cone ring synchronously the synchronous conical surface on the conical surface and the shift gear same radially just on diameter poor.
Boss on the described shift gear is the circular cone with the main shaft coaxial line; The inner headed face of described synchronization device cone ring is the conical bore face; When on the synchronization device cone ring synchronously the conical surface when synchronous conical surface face on the shift gear contacts; In the radial direction same, the difference of inside and outside circle diameter is less than the synchronous diameter of the conical surface and boss poor on the shift gear, when neutral on the synchronization device cone ring; In the radial direction same, the difference of the diameter of synchronization device cone ring conical bore and boss is poor less than the diameter of two synchronous conical surfaces.
For the power of reducing friction, described boss is provided with oil groove.
In order to reduce gearshift power, described slider disc is connected through spline with main shaft, the external spline teeth that main shaft is used for being connected with slider disc be fusiformis, the inner spline gear of slider disc be fusiformis.
For the ease of mounting spring and locating stud; The both sides of described slider disc respectively are connected with a sliding sleeve, and two sliding sleeves are fixedly connected, are connected to float in main shaft diameter on main shaft is axial with slider disc, and two synchronization device cone rings connect in aggregates by lock pin; The parallel axes of the axis of lock pin and two synchronization device cone rings; Slider disc is provided with radial groove, is provided with locating stud and spring in the radial groove of slider disc, in the central slot that an end is pressed on the spring, the other end withstands on lock pin of locating stud.
Beneficial effect of the present invention has: the present invention is through being provided with the boss that supports the synchronization device cone ring inner headed face on shift gear; Make the eccentric controlled of synchronization device cone ring and shift gear; When neutral, the synchronous conical surface of synchronization device cone ring can not contact with the synchronous conical surface of shift gear, therefore; Synchronous conical surface wearing and tearing can not take place when neutral, long service life.Because slider disc and the special linkage structure of main shaft when gearshift, can produce self energizing effort, reduce gearshift power, make gearshift light.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation enlarged view of part 4 among Fig. 1;
Fig. 3 is an A partial enlarged drawing among Fig. 1;
Fig. 4 is the structural representation of part 12 among Fig. 3;
Fig. 5 is the B-B sectional view of Fig. 2;
Fig. 6 is that the A of Fig. 2 is to view;
Fig. 7 is the structural representation of the part that is used on the part 3 being connected with part 13;
Fig. 8 is the structural representation of the internal spline of part 13;
The key plan of part 3 and part 13 upper spline teeth when Fig. 9 is neutral;
Figure 10 is the key plan of part 3 and part 13 upper spline teeth in the synchronizing process;
Figure 11 is the stressed schematic representation of the spline tooth of part 13 in the synchronizing process;
Figure 12 is the force analysis figure of spline tooth among Figure 11;
Among the figure, 1, the shift gear I, 2, the shift gear II, 3, main shaft, 4, synchronizer, 5, selector fork, 6, synchronization device cone ring, 7, lock pin, 8, locating stud, 9, spring, 10, right sliding sleeve, 11, left sliding sleeve, 12, connecting plate, 13, slider disc.3a, intermediate portion, 3b, left part, 3c, right portions, 13a, intermediate portion, 13b, left part, 13c, right portions.
Embodiment
A kind of specific embodiment as shown in Figure 1, it comprises main shaft 3, be arranged on synchronizer 4 and two shift gear I 1 and shift gear II 2 on the main shaft 3.
Like Fig. 2, Fig. 5 and shown in Figure 6, synchronizer comprises synchronization device cone ring 6, lock pin 7, locating stud 8, spring 9, right sliding sleeve 10, left sliding sleeve 11, connecting plate 12 and slider disc 13, and synchronization device cone ring 6 has two.Two synchronization device cone rings 6 and right sliding sleeve 10, left sliding sleeve 11 and slider disc 13 all are enclosed within on the main shaft 3; Left side sliding sleeve 11 is positioned at the left side of slider disc 13; Right sliding sleeve 10 is positioned at the right side of slider disc 13; Connecting plate 12 as shown in Figure 4 axially is connected right sliding sleeve 10, left sliding sleeve 11 and slider disc 13 fixing, directly certain activity surplus is arranged upwards, guarantees that right sliding sleeve 10, left sliding sleeve 11 move axially as a part with slider disc 13.
A synchronization device cone ring 6 is positioned at the left side of left sliding sleeve 11, and another synchronization device cone ring 6 is positioned at the right side of right sliding sleeve 10, and two synchronization device cone rings 6 are in aggregates by lock pin 7 connections, the parallel axes of the axis of lock pin 7 and two synchronization device cone rings 6.
Locating stud 8 and spring 9 are contained on the slider disc 13 in the radial slot, and an end of locating stud 8 is pressed on the spring 9, the other end withstands in the central slot of lock pin 7.Selector fork 5 is stuck on the slider disc 13.
Like Fig. 1 and shown in Figure 4; The male cone (strobilus masculinus) of synchronization device cone ring 6 is the synchronous conical surface; Shift gear I 1 and shift gear II 2 be provided with synchronization device cone ring 6 on the synchronous conical surface that matches of the conical surface synchronously, shift gear I 1 is an inner conical surface with the synchronous conical surface on the shift gear II 2, respectively is provided with a boss in the interior circle that extend into respective synchronization device conical ring 6 on shift gear I 1 and the shift gear II 2; During neutral; The inner headed face of synchronization device cone ring 6 contacts with boss, and when synchronously the conical surface is when synchronous conical surface face on shift gear I 1 or the shift gear II 2 contacts on the synchronization device cone ring 6, the inner headed face of synchronization device cone ring 6 does not contact with boss on shift gear I 1 or the shift gear II 2.
The boss of shift gear I 1 and shift gear II 2 is the cylinder table with main shaft 3 coaxial lines; Below be that example is explained with the synchronization device cone ring 6 in shift gear I 1 and left side; The inner headed face of synchronization device cone ring 6 is the cylindrical hole face of radius greater than the radius of the boss on the shift gear I 1; When the two synchronous conical surfaces contact, realize that boss does not contact with the inner headed face of synchronization device cone ring 6.The difference of the diameter of cylindrical hole and cylinder table during less than neutral on the synchronization device cone ring 6 synchronously the synchronous conical surface on the conical surface and the shift gear I 1 same radially just on diameter poor.Boss supports the inner headed face of the synchronizer conical surface when realizing neutral, and the two synchronous conical surfaces do not contact.The structure of the synchronization device cone ring 6 on shift gear II 2 and right side is same as described above.
The boss of shift gear I 1 and shift gear II 2 for main shaft 3 coaxial lines be circular cone; Below be that example is explained with the synchronization device cone ring 6 in shift gear I 1 and left side; The inner headed face of synchronization device cone ring 6 is the conical bore face; When on the synchronization device cone ring 6 synchronously the conical surface when synchronous conical surface face on the shift gear I 1 contacts; In the radial direction same, the difference of inside and outside circle diameter is less than the synchronous diameter of the conical surface and boss poor on the shift gear I 1 on the synchronization device cone ring 6, and the realization boss does not contact with the inner headed face of synchronization device cone ring 6.When neutral, in the radial direction same, the difference of the diameter of synchronization device cone ring 6 conical bores and boss is poor less than the diameter of two synchronous conical surfaces, realizes that boss supports the inner headed face of synchronization device cone ring 6, avoids the two synchronous conical surfaces to contact.The structure of the synchronization device cone ring 6 on shift gear II 2 and right side is same as described above.
On the boss oil groove can be set, the friction when contacting with the inner headed face of synchronization device cone ring 6 to reduce boss.
Working principle:
During neutral, as shown in Figure 9, the intermediate portion 13a of inner spline gear contacts on the intermediate portion 3a of the external spline teeth on the main shaft 3 and the slider disc 13, between main shaft 3 and the slider disc 13 not at the axial active force of main shaft 3.
When needs were put into gear a gear I 1, selector fork 5 was stirred slider disc 13 left, in the synchronizing process; Shown in figure 10, slider disc 13 rotations make fusiformis external spline teeth left part 3b contact with fusiformis inner spline gear right portions 13c, and are shown in figure 11; Producing surface pressure Fn, is Ft by the equivalent peripheral force of slider disc 13 suffered friction torque, the axial force F a that is shown in figure 12 that makes a concerted effort of Fn and Ft; This axial force F a is converted into the positive pressure of 6 pairs of shift gear I 1 of synchronization device cone ring again; Therefore increase the friction torque of 4 pairs of shift gear I 1 of synchronizer, reduced lock in time, thereby make gearshift light.Synchronizer 4 working principle of gear II 2 of putting into gear is identical with a working principle of gear I 1 of putting into gear.
The boss of shift gear I 1 and shift gear II 2 carries out radially supplemental support to synchronization device cone ring on the synchronizer 46; Contact with the synchronous conical surface on shift gear I 1 or the shift gear II 2 with the synchronous conical surface of avoiding synchronizer 4 synchronization device cone ring 6 when the neutral; Only allow synchronously the time, could contact, thus the working life of assurance synchronizer.
Claims (6)
1. the synchronization structure of a twin countershaft transmission; Comprise main shaft, be arranged on synchronizer and two shift gears on the main shaft; Described synchronizer comprises two synchronization device cone rings that are used for the slider disc that is connected with selector fork and are positioned at the slider disc both sides; Two synchronization device cone rings and slider disc are fixedly connected, are connected to float in main shaft diameter on axially at main shaft, and the male cone (strobilus masculinus) of described synchronization device cone ring is the synchronous conical surface, described shift gear be provided with synchronization device cone ring on the synchronous conical surface that matches of the conical surface synchronously; The synchronous conical surface on the shift gear is an inner conical surface; It is characterized in that: respectively be provided with a boss in the interior circle that extend into respective synchronization device conical ring on two shift gears, during neutral, the inner headed face of synchronization device cone ring contacts with boss; When synchronously the conical surface is when synchronous conical surface face on the shift gear contacts on the synchronization device cone ring, the inner headed face of synchronization device cone ring does not contact with boss on the shift gear.
2. the synchronization structure of twin countershaft transmission according to claim 1; It is characterized in that: the boss on the described shift gear for the cylinder table of main shaft coaxial line; The inner headed face of described synchronization device cone ring is the cylindrical hole face of diameter greater than the diameter of the boss on the corresponding shift gear, the difference of the diameter of cylindrical hole and cylinder table during less than neutral on the synchronization device cone ring synchronously the synchronous conical surface on the conical surface and the shift gear same radially just on diameter poor.
3. the synchronization structure of twin countershaft transmission according to claim 1; It is characterized in that: the boss on the described shift gear for the circular cone of main shaft coaxial line; The inner headed face of described synchronization device cone ring is the conical bore face, when on the synchronization device cone ring synchronously the conical surface when synchronous conical surface face on the shift gear contacts, in the radial direction same; The difference of inside and outside circle diameter is less than the synchronous diameter of the conical surface and boss poor on the shift gear on the synchronization device cone ring; When neutral, in the radial direction same, the difference of the diameter of synchronization device cone ring conical bore and boss is poor less than the diameter of two synchronous conical surfaces.
4. according to the synchronization structure of claim 1 or 2 or 3 described twin countershaft transmissions, it is characterized in that: described boss is provided with oil groove.
5. according to the synchronization structure of claim 1 or 2 or 3 described twin countershaft transmissions; It is characterized in that: described slider disc is connected through spline with main shaft; The external spline teeth that main shaft is used for being connected with slider disc be fusiformis, the inner spline gear of slider disc be fusiformis.
6. the synchronization structure of twin countershaft transmission according to claim 5; It is characterized in that: the both sides of described slider disc respectively are connected with a sliding sleeve; Two sliding sleeves are fixedly connected, are connected to float in main shaft diameter on main shaft is axial with slider disc; Two synchronization device cone rings are in aggregates by the lock pin connection, the parallel axes of the axis of lock pin and two synchronization device cone rings, and slider disc is provided with radial groove; Be provided with locating stud and spring in the radial groove of slider disc, in the central slot that an end is pressed on the spring, the other end withstands on lock pin of locating stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103905187A CN102494048A (en) | 2011-12-01 | 2011-12-01 | Synchronous structure for twin countershaft transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103905187A CN102494048A (en) | 2011-12-01 | 2011-12-01 | Synchronous structure for twin countershaft transmission |
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| Publication Number | Publication Date |
|---|---|
| CN102494048A true CN102494048A (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103905187A Pending CN102494048A (en) | 2011-12-01 | 2011-12-01 | Synchronous structure for twin countershaft transmission |
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| Country | Link |
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| CN (1) | CN102494048A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808905A (en) * | 2012-08-20 | 2012-12-05 | 中国重汽集团济南动力有限公司 | Dual-middle-shaft all synchromesh ten-gear transmission |
| CN103758887A (en) * | 2014-01-18 | 2014-04-30 | 赵良红 | Built-in clutch and gear shifting control mechanism thereof |
| CN111102330A (en) * | 2018-10-29 | 2020-05-05 | 财团法人工业技术研究院 | Speed changing device and method for electric vehicle |
| CN113305715A (en) * | 2021-06-23 | 2021-08-27 | 上海发那科机器人有限公司 | Mould burnishing device for robot |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2142390A (en) * | 1983-06-29 | 1985-01-16 | Dana Corp | Synchronizing positive clutches |
| CN1062784A (en) * | 1990-12-24 | 1992-07-15 | 易通公司 | The synchronizer of band deep splines and improvement boost ramps |
| CN1922414A (en) * | 2004-10-28 | 2007-02-28 | 日产自动车株式会社 | Synchronizer for transmission |
| CN200958563Y (en) * | 2006-10-24 | 2007-10-10 | 浙江万里扬变速器有限公司 | Double-countershaft gear of outomobile |
| CN201428776Y (en) * | 2009-06-19 | 2010-03-24 | 潘成林 | Synchronizer for twin countershaft transmission |
| CN202381578U (en) * | 2011-12-01 | 2012-08-15 | 中国重汽集团济南动力有限公司 | Synchronizing structure of dual intermediate shaft gearbox |
-
2011
- 2011-12-01 CN CN2011103905187A patent/CN102494048A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2142390A (en) * | 1983-06-29 | 1985-01-16 | Dana Corp | Synchronizing positive clutches |
| CN1062784A (en) * | 1990-12-24 | 1992-07-15 | 易通公司 | The synchronizer of band deep splines and improvement boost ramps |
| CN1922414A (en) * | 2004-10-28 | 2007-02-28 | 日产自动车株式会社 | Synchronizer for transmission |
| CN200958563Y (en) * | 2006-10-24 | 2007-10-10 | 浙江万里扬变速器有限公司 | Double-countershaft gear of outomobile |
| CN201428776Y (en) * | 2009-06-19 | 2010-03-24 | 潘成林 | Synchronizer for twin countershaft transmission |
| CN202381578U (en) * | 2011-12-01 | 2012-08-15 | 中国重汽集团济南动力有限公司 | Synchronizing structure of dual intermediate shaft gearbox |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808905A (en) * | 2012-08-20 | 2012-12-05 | 中国重汽集团济南动力有限公司 | Dual-middle-shaft all synchromesh ten-gear transmission |
| CN103758887A (en) * | 2014-01-18 | 2014-04-30 | 赵良红 | Built-in clutch and gear shifting control mechanism thereof |
| CN103758887B (en) * | 2014-01-18 | 2016-01-06 | 赵良红 | Built-in synchronizer and selector device thereof |
| CN111102330A (en) * | 2018-10-29 | 2020-05-05 | 财团法人工业技术研究院 | Speed changing device and method for electric vehicle |
| CN113305715A (en) * | 2021-06-23 | 2021-08-27 | 上海发那科机器人有限公司 | Mould burnishing device for robot |
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Application publication date: 20120613 |