CN204201043U - For the caging system of the shifting operation mechanism of AMT - Google Patents
For the caging system of the shifting operation mechanism of AMT Download PDFInfo
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- CN204201043U CN204201043U CN201420606455.3U CN201420606455U CN204201043U CN 204201043 U CN204201043 U CN 204201043U CN 201420606455 U CN201420606455 U CN 201420606455U CN 204201043 U CN204201043 U CN 204201043U
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Abstract
A kind of caging system of the shifting operation mechanism for AMT of transmission technology field, comprise: shifting operation lid, the shifting axle, the from top to bottom gearshift be set in turn on shifting axle that are arranged at shifting operation lid inside refer to, thrust-bearing, block selecting return spring and limiting bush, wherein: the limiting bush with king's word groove is socketed on shifting axle, shifting axle is positioned in shifting operation lid by position limit pin connected vertically with it, and shifting operation lid is fixedly installed on transmission case external body; This device can solve after automatic mechanical transmission engage a gear completes and contact with adjacent shifting block with shifting shifting block, avoids the problem of speed-changer synchronizer shift fork parts depreciation.
Description
Technical field
The utility model relates to a kind of device of transmission technology field, specifically a kind of caging system being used for the shifting operation mechanism of AMT (automatic mechanical transmission).
Background technique
Automobile has become the traffic tool indispensable in people's daily life and industrial and agricultural production, in " 12 " planning, automobile industry technology also becomes the field that the Department of Science and Technology gives special assistance to, namely strided forward to automobile power by automobile superpower, have the practical capability of independent innovation, the international breakthrough of kernel component, realizes real industrial upgrading.Therefore, how innovate to realize this goal by science and technology and just become current and must the core topic that solves of emphasis in future automobile industry development.
Automotive transmission is as the critical piece in car transmissions, for changing torque and the rotating speed of motor, starting to walk, accelerating, travelling and overcoming under the different driving conditions such as different kinds of roads obstacle to adapt to automobile to the different requirements driving net tractive force of wheel and the speed of a motor vehicle.Now along with the development of technology, the market share of automatic transmission progressively improves.Automatic mechanical transmission can according to the speed of a motor vehicle, throttle, the parameter such as driver-commanded, determine best gear, control the clutch separation that originally manually completed by driver and joint, pluck and keep off and put into gear and the operating process such as synchronization regulation of accelerator open degree of motor, finally realize the manipulation automation of shift process.Relatively traditional automatic transmission (hydraulic automatic speed variator), has that transmission efficiency is high, compact structure, cost are low, is easy to manufacture, the advantage such as reliable operation and handiness.Because automatic mechanical transmission maintains the basic structure of manual transmission, therefore generally all can use block selecting return spring.After completing gear shifting action, active force cancelled by hydraulic actuator, and block selecting return spring is compressed, and certainly leads to a spring-back force.This power is maximum reach 180 ?200 newton, spacing owing to not having, power will be passed to shifting block by shifting shifting block, due to leverage, be passed to shift fork instep by declutch shift shaft, cause the wearing and tearing of instep.Therefore, to gear selecting gear put spacing, effectively can prevent the wearing and tearing of synchronizer shift fork instep, improve the precision of automatic mechanical transmission block selecting simultaneously.
Through finding the retrieval of prior art, open (bulletin) the day 2013.03.13 of Chinese patent literature CN10296733A, disclose a kind of AMT speed variator gear shift mechanism interlock system, this technology comprises: block selecting drive motor I, block selecting leading screw, gearshift fork, gearshift fork axle, gearshift drive motor II, block selecting ball assembly, gearshift dogbolt, gear-shifting rocker arm, gearshift leading screw, gearshift ball assembly etc.The interlocking that king's word slot fit on gearshift dogbolt and gearshift fork realizes between gear, but this technology can only meet the risks of hanging two gears while automatically controlled AMT evades that bit selecting when putting into gear is not in place and causes, and is not suitable for hydraulic control AMT speed changer.
Open (bulletin) the day 2013.07.24 of Chinese patent literature CN10321614A, disclose a kind of positioning means of car transmission gear of reverse drive gear control field, comprise: position limit pin, manipulation lid, shifting axle, shifting position-limitting pin and shifting cam, wherein: shifting cam is fixed on shifting axle, shifting axle and the rotation of shifting cam are arranged in the center hole of manipulation lid, shifting position-limitting pin press-fits in manipulation lid, shifting cam offers pin-and-hole, and manipulation covers and offers mounting hole; This technology, by drawing, press position limit pin and handling the position covering place, realizes locking and the release of Transmission gear.But this technical components designs and system architecture is more complicated, position limit pin structure by handling the outside insertion of lid, and only matches with shifting cam king word groove.King's word slot is in the side of shifting axle, and therefore stressing conditions is monolateral stressed, makes shifting axle under spring force, easily produces moment, also makes shifting axle and closely puts bearing one-side contact, wearing and tearing aggravation.
Open (bulletin) the day 2012.07.11 of Chinese patent literature CN102563029A, disclose a kind of speed variator gear shift mechanism and comprise shifting axle, door, and gearshift refers to, speed variator gear shift mechanism also comprises and can to rotate relative to shifting axle but can not its block selecting locating stud moved axially relatively, one end is fixed on the gearshift locating stud on shifting axle, the sleeve body that one end and door are fixedly connected, and be fixed on block selecting limiting board on sleeve body and gearshift limiting board, block selecting locating stud can move axially but can not rotate to it by relative sleeve body, block selecting limiting board is supported in block selecting locating stud one end, and block selecting limiting board has the contour shape higher than two ends in the middle part of it at the axial direction of sleeve body, the other end of gearshift locating stud supports gearshift limiting board, and limiting board of shifting gears has contour shape higher than two ends in the middle part of it at the axial direction being approximately perpendicular to sleeve body, gearshift limiting board has highly consistent contour shape at its axial direction.But this technology is only applicable to manual transmission, Assembly of the parts is complicated, after locating stud contacts with monolateral king's word groove, there is the monolateral stressing conditions of locating stud, easily produces moment, makes the installation of shifting axle produce, unstable wear.
Model utility content
The utility model is for prior art above shortcomings, a kind of caging system of the shifting operation mechanism for AMT is proposed, can solve after automatic mechanical transmission engage a gear completes and contact with adjacent shifting block with shifting shifting block, avoid the problem of speed-changer synchronizer shift fork parts depreciation.
The utility model is achieved through the following technical solutions, the utility model comprises: shifting operation lid, the shifting axle, the from top to bottom gearshift be set in turn on shifting axle that are arranged at shifting operation lid inside refer to, thrust-bearing, block selecting return spring and limiting bush, wherein: the limiting bush with king's word groove is socketed on shifting axle, shifting axle is positioned in shifting operation lid by position limit pin connected vertically with it, and shifting operation lid is fixedly installed on transmission case external body.
Described limiting bush is tubular construction, and its two ends, side are respectively equipped with the hollow out king word groove of symplex structure.
The lower end of described limiting bush is provided with flange, and the inside of corresponding shifting operation lid is provided with the flanged surface groove matched with it; This limiting bush is made preferably by metal essence type casting moulding.
In described king's word groove, every side is made up of three vertical and one horizontal, four hollow slots, and its shape is arranged identical with the gear of speed changer, and shifting axle Central Symmetry is arranged relatively;
Described position limit pin radially across shifting axle and two end supports on king's word groove of limiting bush both sides, its two ends extension can move in hollow slots, moving up and down of shifting axle limited by hollow slots with left-right rotation, each gear positions free travel determined by the upper and lower border width of hollow slots, avoid after automatic mechanical transmission engage a gear completes with this and contact with adjacent shifting block with shifting shifting block, play the effect preventing the inordinate wear of speed-changer synchronizer shift fork part.
Described position limit pin is made up of On The Quality of Bearing Steels, because Bearing Steel is higher, therefore not easy to wear, makes block selecting position more accurate.
Described shifting operation covers the groove being provided with and matching with limiting bush, and this groove can make the accurate positioning of limiting bush.
Described shifting operation covers and is provided with stiffening rib, and the direction of this stiffening rib is identical with shifting Axial and radial direction, manipulation is covered under gear shifting force effect, not easily produces deformation.
The bottom that described gearshift refers to is provided with guide pipe, and described thrust-bearing is movably set in guide pipe, and the bottom surface of guide pipe contacts with described limiting bush.
The bottom surface of described guide pipe and the surface of contact of described limiting bush are machining plane, and gearshift refers to move downwardly to two plane contact, thus realizes mechanical position limitation.
Technique effect
Compared with prior art, the utility model adopts limiting bush and position limit pin to form shifting caging system, plays accurate block selecting and avoids the effect of speed-changer synchronizer shift fork part inordinate wear.The actuator that this device is applicable to the AMT speed changer of single solenoid valve block selecting uses, relatively existing block selecting up and down needs 2 electromagnetic valve, this device utilizes block selecting return spring to automatically reset to neutral position, coordinate on limiting bush along being improved to mechanical position limitation, allow to refer to that lower limb contacts with gearshift, prevent gear shifting actuating mechanism block selecting to lose efficacy, shield; When shift of transmission; shifting axle rotates; limiting bush and shifting operation lid keep not having relative displacement, and after gearshift completes, position limit pin withstands limiting bush edge; shifting shifting block position is limit; make shifting shifting block can not touch adjacent shifting block, therefore shift fork also can not continue motion, by self-locking spring and steel ball due to spring force; remain on gear positions accurately, play the effect of protection speed-changer synchronizer shift fork part like this.
Accompanying drawing explanation
Fig. 1 is the total schematic diagram of the utility model position-limit mechanism;
Fig. 2 is limiting bush scheme of installation;
Fig. 3 is limiting bush schematic perspective view;
Fig. 4 a and Fig. 4 b is that gearshift refers to schematic perspective view;
Fig. 5 is shifting operation lid schematic diagram;
Fig. 6 is embodiment's schematic perspective view;
Fig. 7 is Fig. 6 relative perspective schematic diagram;
In figure: 1 shifting operation lid, 2 shifting axles, 3 gearshift refer to, 4 thrust-bearings, 5 block selecting return springs, 6 limiting bushs, 7 king's word grooves, 8 position limit pins, 9 case of transmissions, 10 flanges, 11 flanged surface grooves, 12 hollow slots, 13 stiffening ribs, 14 guide pipes, 15 shifting shifting blocks, 16 adjacent shifting blocks, 17 synchronizer shift forks.
Embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented under premised on technical solutions of the utility model; give detailed mode of execution and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
Embodiment 1
As shown in Figure 1 and Figure 5, the present embodiment comprises: shifting operation lid 1, the shifting axle 2, the from top to bottom gearshift be set in turn on shifting axle 2 that are arranged at shifting operation lid 1 inside refer to 3, thrust-bearing 4, block selecting return spring 5 and limiting bush 6, wherein: the limiting bush 6 with king's word groove 7 is socketed on shifting axle 2, shifting axle 2 passes through position limit pin 8 connected vertically with it and is positioned in shifting operation lid 1, and it is outside that shifting operation lid 1 is fixedly installed on case of transmission 9.
As shown in Figures 2 and 3, described limiting bush 6 is tubular construction, and its two ends, side are respectively equipped with the hollow out king word groove 7 of symplex structure.
The lower end of described limiting bush 6 is provided with flange 10, and the inside of corresponding shifting operation lid 1 is provided with the flanged surface groove 11 matched with it; This limiting bush 6 is made preferably by metal essence type casting moulding.
This flange 10 is consistent with shifting operation lid 1 flanged surface shape, and installation direction and position are fixed;
When the flange 10 of limiting bush is in flanged surface groove 11, gear shifting force acts on shifting axle 2 top, and shifting axle is rotated, and limiting bush 6 and shifting operation lid 1 keep motionless, and now position limit pin 8 also turns an angle thereupon, and move in king's word groove 7.After gearshift completes, position limit pin 8 withstands edge on limiting bush 6, and shifting shifting block position is limit, and remains on gear positions accurately, plays the effect of protection speed-changer synchronizer shift fork part like this.
In described king's word groove 7, every side is made up of three vertical and one horizontal, four hollow slots 12, and its shape is arranged identical with the gear of speed changer, and shifting axle 2 Central Symmetry is arranged relatively.
As shown in Figure 5 and Figure 6, described position limit pin 8 radially across shifting axle 2 and two end supports on king's word groove 7 of limiting bush 6 both sides, its two ends extension can move in hollow slots 12, moving up and down of shifting axle 2 limited by hollow slots 12 with left-right rotation, each gear positions free travel determined by upper and lower edge a, b width of hollow slots 12, avoid after automatic mechanical transmission engage a gear completes with this and contact with adjacent shifting block with shifting shifting block, play the effect preventing the inordinate wear of speed-changer synchronizer shift fork part.
The king's word groove 7 moved up and down with left-right rotation on limited lining of shifting axle 2 limited.Therefore avoid after automatic mechanical transmission engage a gear completes and contact with adjacent shifting block 16 with shifting shifting block 15, play the effect preventing synchronizer shift fork 17 inordinate wear.
Described position limit pin 8 is made up of On The Quality of Bearing Steels, because Bearing Steel is higher, therefore not easy to wear, makes block selecting position more accurate.
As shown in Figure 7, described shifting operation lid 1 is provided with the flanged surface groove 11 matched with limiting bush 6, and this groove can make the accurate positioning of limiting bush 6.
Described shifting operation lid 1 is provided with stiffening rib 13, and the direction of this stiffening rib 13 is identical with shifting axle 2 radial direction, manipulation is covered under gear shifting force effect, not easily produces deformation.
As shown in Figure 4, described gearshift refers to that the bottom of 3 is provided with guide pipe 14, and described thrust-bearing 4 is movably set in guide pipe 14, and the bottom surface of guide pipe 14 contacts with described limiting bush 6.
The bottom surface of described guide pipe and the surface of contact of described limiting bush 6 are machining plane, and gearshift refers to that 3 move downwardly to two plane contact, thus realizes mechanical position limitation.
Due to limiting bush 6 and shifting operation lid 1 mating shapes, limiting bush 6 flange is embedded in shifting operation lid 1 flanged surface groove, and therefore limiting bush 6 can not rotate along with rotating the rotation of shifting axle during gearshift.
Because block selecting power is downward all the time, therefore limiting bush 6 can be close to shifting operation lid 1 flanged surface, guarantees that now gear positions can be corresponding with the position of position limit pin on king's word groove.
After having shifted gears, active force cancelled by AMT actuator solenoid valve, under the effect of block selecting spring force, along place on each shelves that position limit pin 8 is supported on limiting bush 6 king word groove.So, shifting shifting block can not be upspring, and makes shifting shifting block be pressed onto adjacent shifting block 6.
Position limit pin and limiting bush 6, the especially demarcation of the executive software of speed changer automatical control system are difficult points.Find in actual use, due to the shelves zone position error of demarcating, the edge of king's word groove can be caused at the trial to have a little wearing and tearing.Being generally draw the parts depreciation amount after the certain number of times of gearshift by test, carrying out system self study at set intervals, by solving the problem of demarcating drift.
The present embodiment is when transmission duty, actuator gives a block selecting power downwards, act on shifting axle, limiting bush 6 is passed to by block selecting return spring, and be close to shifting operation lid 1, after block selecting puts in place, gear shifting force starts shifting axle is rotated, position limit pin proceeds in king's word groove corresponding shelves district groove from neutral position, after completing gear shifting action, block selecting power is cancelled, the spring-back force of block selecting return spring makes position limit pin touch the top edge in corresponding shelves district, now, shifting axle assembly is limited, thus, shifting shifting block can not touch adjacent shelves district shifting block because the spring-back force of block selecting return spring continues to move upward, therefore the wearing and tearing of speed-changer synchronizer shift fork part can not be caused further.
Claims (8)
1. the caging system for the shifting operation mechanism of AMT, it is characterized in that, comprise: shifting operation lid, the shifting axle, the from top to bottom gearshift be set in turn on shifting axle that are arranged at shifting operation lid inside refer to, thrust-bearing, block selecting return spring and limiting bush, wherein: the limiting bush with king's word groove is socketed on shifting axle, shifting axle is positioned in shifting operation lid by position limit pin connected vertically with it, and shifting operation lid is fixedly installed on transmission case external body;
Described two ends, limiting bush side are respectively equipped with the hollow out king word groove of symplex structure;
Described position limit pin radially across shifting axle and two end supports on king's word groove of limiting bush both sides, its two ends extension can move in hollow slots, moving up and down of shifting axle limited by hollow slots with left-right rotation, and each gear positions free travel determined by the upper and lower border width of hollow slots.
2. the caging system of the shifting operation mechanism for AMT according to claim 1, it is characterized in that, the lower end of described limiting bush is provided with flange, and the inside of corresponding shifting operation lid is provided with the flanged surface groove matched with it.
3. the caging system of the shifting operation mechanism for AMT according to claim 1, it is characterized in that, in described king's word groove, every side is made up of three vertical and one horizontal, four hollow slots, and its shape is arranged identical with the gear of speed changer, and shifting axle Central Symmetry is arranged relatively.
4. the caging system of the shifting operation mechanism for AMT according to claim 1, it is characterized in that, described position limit pin is made up of On The Quality of Bearing Steels.
5. the caging system of the shifting operation mechanism for AMT according to claim 1, it is characterized in that, described shifting operation covers the groove being provided with and matching with limiting bush, and this groove can make the accurate positioning of limiting bush.
6. the caging system of the shifting operation mechanism for AMT according to claim 1, it is characterized in that, described shifting operation covers and is provided with stiffening rib, and the direction of this stiffening rib is identical with shifting Axial and radial direction.
7. the caging system of the shifting operation mechanism for AMT according to claim 1, it is characterized in that, the bottom that described gearshift refers to is provided with guide pipe, and described thrust-bearing is movably set in guide pipe, and the bottom surface of guide pipe contacts with described limiting bush.
8. the caging system of the shifting operation mechanism for AMT according to claim 7, it is characterized in that, the bottom surface of described guide pipe and the surface of contact of described limiting bush are machining plane, and gearshift refers to move downwardly to two plane contact, thus realizes mechanical position limitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420606455.3U CN204201043U (en) | 2014-10-20 | 2014-10-20 | For the caging system of the shifting operation mechanism of AMT |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420606455.3U CN204201043U (en) | 2014-10-20 | 2014-10-20 | For the caging system of the shifting operation mechanism of AMT |
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| CN204201043U true CN204201043U (en) | 2015-03-11 |
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| CN201420606455.3U Active CN204201043U (en) | 2014-10-20 | 2014-10-20 | For the caging system of the shifting operation mechanism of AMT |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343969A (en) * | 2014-10-20 | 2015-02-11 | 上海汽车变速器有限公司 | Limiting system used for AMT (automated mechanical transmission) gear-selecting/shifting control mechanism |
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2014
- 2014-10-20 CN CN201420606455.3U patent/CN204201043U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343969A (en) * | 2014-10-20 | 2015-02-11 | 上海汽车变速器有限公司 | Limiting system used for AMT (automated mechanical transmission) gear-selecting/shifting control mechanism |
| CN104343969B (en) * | 2014-10-20 | 2017-02-01 | 上海汽车变速器有限公司 | Limiting system used for AMT (automated mechanical transmission) gear-selecting/shifting control mechanism |
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