CN203770548U - Double middle shaft transmission structure with synchronous hollow shaft - Google Patents
Double middle shaft transmission structure with synchronous hollow shaft Download PDFInfo
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- CN203770548U CN203770548U CN201420095245.2U CN201420095245U CN203770548U CN 203770548 U CN203770548 U CN 203770548U CN 201420095245 U CN201420095245 U CN 201420095245U CN 203770548 U CN203770548 U CN 203770548U
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Abstract
A double middle shaft transmission structure with a synchronous hollow shaft comprises a solid input shaft and a hollow input shaft, wherein the solid input shaft is in drive fit with an output shaft via an odd gear middle shaft; the hollow input shaft is in drive fit with the output shaft via an even gear middle shaft; the hollow input shaft is sequentially sleeved with a hollow shaft fixed connecting synchronous gear and a hollow shaft fixed connecting gear from the head end to the tail end of the hollow input shaft; the hollow shaft fixed connecting gear is engaged with an odd gear middle shaft idler gear and an even gear middle shaft fixed connecting gear; the hollow shaft fixed connecting synchronous gear is engaged with an odd gear middle shaft synchronous idler gear; the odd gear middle shaft is in drive fit with the odd gear middle shaft synchronous idler gear and the odd gear middle shaft idler gear respectively via a synchronous friction wheel; and an odd gear middle shaft fixed connecting gear is engaged with a solid input shaft fixed connecting gear arranged on the solid input shaft in a sleeving manner.The structure is simple in structure, small in arrangement space, convenient to overhaul and low in production cost.
Description
Technical field
The utility model relates to a kind of gearbox synchronous gear structure, relates in particular to the synchronous twin countershaft transmission structure of a kind of hollow shaft, is specifically applicable to simplify gearbox designs, optimizes gearshift mode, reduces production costs.
Background technique
Dual-clutch transmission makes vehicle self shifter in the unbroken situation of power, not only makes the driving variable of automobile obtain simpler, but also the travelling comfort, power character and the Security that have effectively improved automobile.
Chinese patent application publication No. is CN103032528A, Shen Qing Publication day is the computational methods that the patent of invention on April 10th, 2013 discloses a kind of pair of jack shaft DCT structure and gear velocity ratio thereof, comprise double clutch, solid input shaft and hollow input shaft, the coaxial solid input shaft arranging is connected with double clutch with hollow input shaft one end, the other end is respectively provided with a constant mesh gear, its hollow core input shaft matches with even number gear jack shaft by constant mesh gear group, even number gear jack shaft matches with output shaft by gear train, solid input shaft matches with odd number gear jack shaft by constant mesh gear group, odd number gear jack shaft matches with output shaft by gear train, solid input shaft end matches with the head end of output shaft with five gear seven gear synchronizers by embedded bearing successively, and the resultant gear ratio of each gear is Geometric Sequence from seven gear to gears and distributes.Although this invention can make layout comparatively compact, still there is following defect in it:
1, this invention need to be used multiple synchronizers to shift gears, and the arrangement space that synchronizer takies is larger, has increased the axial design length of gearbox, makes gearbox become heavier more greatly; Synchronizer structure complexity simultaneously, manufacture cost is high, is installed on the repair and maintenance that is not easy to gearbox in gearbox.
Summary of the invention
The purpose of this utility model is to overcome the problem that the arrangement space existing in prior art is large, manufacture cost is high, and the twin countershaft transmission that a kind of arrangement space is little, the hollow shaft of low cost of manufacture is synchronous structure is provided.
For realizing above object, technical solution of the present utility model is:
The twin countershaft transmission structure that hollow shaft is synchronous, comprises solid input shaft and hollow input shaft, and described solid input shaft keeps off jack shaft by odd number and coordinates with output shaft transmission, and described hollow input shaft keeps off jack shaft by even number and coordinates with output shaft transmission;
On described hollow input shaft, be arranged with successively the hollow shaft synchromesh gear that is connected from its head end to end, the hollow shaft gear that is connected, described hollow shaft be connected gear respectively with odd number gear jack shaft free gear, the even number gear jack shaft gear that is connected is meshed, described hollow shaft synchromesh gear and the odd number gear jack shaft empty set synchromesh gear that is connected is meshed, on described odd number gear jack shaft, be arranged with successively odd number gear jack shaft empty set synchromesh gear from its head end to end, synchronous friction wheel, odd number gear jack shaft free gear, the odd number gear jack shaft gear that is connected, odd number gear jack shaft keeps off jack shaft empty set synchromesh gear with odd number respectively by synchronous friction wheel, the transmission of odd number gear jack shaft free gear coordinates, described odd number gear jack shaft gear and solid shaft sheathed on the solid input shaft gear that is connected that is connected is meshed.
Described odd number gear jack shaft comprises from its head end to end successively sheathed odd number gear jack shaft empty set synchromesh gear, synchronous friction wheel, odd number gear jack shaft free gear, the odd number gear jack shaft gear that is connected, one gear empty set driving gear, one gear three gear sliding sleeves, three gear empty set driving gears, five gear empty set driving gears and five keep off the sliding sleeve that reverses gear, described even number gear jack shaft comprises the gear that is connected from its head end to end successively sheathed even number gear jack shaft, two gear empty set driving gears, two gear four gear sliding sleeves, four gear empty set driving gears, six gear empty set driving gears and six gear sliding sleeves, described output shaft comprises from its head end to end successively sheathed seven gear sliding sleeves, one gear two keeps off the driven gear that is connected, three gear four gears be connected driven gear and the five gear six gears driven gears that are connected,
A described gear two keeps off the driven gear that is connected and is meshed with a gear empty set driving gear, two gear empty set driving gears respectively, described three gears four keep off the driven gear that is connected and are meshed with three gear empty set driving gears, four gear empty set driving gears respectively, and described five gears six keep off the driven gear that is connected and are meshed with five gear empty set driving gears, six gear empty set driving gears respectively;
Described odd number gear jack shaft coordinates with a gear empty set driving gear, three gear empty set driving gear transmissions respectively by gear three gear sliding sleeves, and odd number gear jack shaft is kept off the transmissions of empty set driving gear and coordinated by the five gears sliding sleeve and five that reverses gear; Even number gear jack shaft coordinates with two gear empty set driving gears, four gear empty set driving gear transmissions respectively by two gear four gear sliding sleeves, and even number gear jack shaft coordinates with six gear empty set driving gear transmissions by six gear sliding sleeves.
Described solid input the tip of the axis coordinates with the head end transmission of output shaft by seven gear sliding sleeves.
The described odd number gear jack shaft gear that is connected keeps off the jack shaft free gear number of teeth with even number and equates; A described gear empty set driving gear is consistent with two gear empty set driving gear shapes, and described three gear empty set driving gears are consistent with four gear empty set driving gear shapes, and described five gear empty set driving gears are consistent with six gear empty set driving gear shapes.
Described even number gear jack shaft the be connected gear ratio of gear of gear and hollow shaft that is connected is a, and described odd number gear jack shaft the be connected gear ratio of gear of gear and solid shaft that is connected is b, between keeping off, compares q=a/b;
The be connected gear ratio of synchromesh gear of described odd number gear jack shaft empty set synchromesh gear and hollow shaft is c, c=b/q.
Reverse gear idle pulley and the reversing gear of output shaft end setting that the empty set driving gear that reverses gear of described odd number gear jack shaft setting keep off the setting of jack shaft end by the even number driven gear transmission that is connected coordinates, described in the empty set driving gear that reverses gear keep off jack shaft transmission with odd number and coordinate by the five gears sliding sleeve that reverses gear.
Compared with prior art, the beneficial effects of the utility model are:
1, conventional synchronizer is divided into two parts by the synchronous twin countershaft transmission structure of a kind of hollow shaft of the utility model, and a part is synchronous friction wheel, and another part is sliding sleeve, respectively the synchronous conical ring of corresponding synchronizer and engagement gear ring.In whole design, only use a synchronous friction wheel and supporting synchromesh gear thereof, realize the function of many group synchronizers, make the synchronization of gear sliding sleeve to be entered and gear driving gear to be entered, cost of production and arrangement space are effectively saved, effectively shorten the length of transmission shaft, improved the mechanical property of transmission shaft.Therefore, the design's cost of production is low, arrangement space is little, mechanical strength is good.
2, the synchronous friction wheel in the synchronous twin countershaft transmission structure of a kind of hollow shaft of the utility model and sliding sleeve are with respect to existing synchronizer structure is more simple, arrangement space is less, easy access is safeguarded, reduced manufacture, maintenance cost cost.Therefore, the design's easy access simple in structure and maintenance.
3, in the synchronous twin countershaft transmission structure of a kind of hollow shaft of the utility model a gear empty set driving gear and two to keep off empty set driving gear shapes consistent, state three gear empty set driving gears consistent with four gear empty set driving gear shapes, five gear empty set driving gears are consistent with six gear empty set driving gear shapes, the driving gear that shape is consistent can be meshed with same driven gear, reduce the quantity of driven gear, shorten the axial length of gearbox, and identical gear can, with same set of mould manufacture, reduce cost of production; One gear two gears be connected driven gear and the five gear six gears driven gears that are connected of driven gear, three gear four gears that are connected are sheathed on output shaft from big to small successively, and driving gear on jack shaft is installed from small to large, assemble convenient.Therefore, the design's reasonable in design, easy to assembly.
4, in the synchronous twin countershaft transmission structure of a kind of solid shaft of the utility model, the be connected gear ratio of synchromesh gear of odd number gear jack shaft empty set synchromesh gear and hollow shaft is c=b/q, in the time that synchronous friction wheel keeps off jack shaft empty set synchromesh gear near odd number, can ensure odd number gear jack shaft and even number to keep off the rotating ratio of jack shaft be q square, solid input shaft is identical with output shaft rotating speed, has guaranteed carrying out smoothly of gearshift.Therefore, the design can realize single synchronous same step gear shifting of friction wheel.
5, the synchronous twin countershaft transmission structure of a kind of hollow shaft of the utility model, in the time of gearshift, first completing sliding sleeve to be shifted gears has just engaged with driving gear to be shifted gears, then double-clutch power directly switches, really realized and do not interrupted self shifter, the design has reached the gearshift effect identical with synchronizer and has changed in simplifying synchronizer design.Therefore, the design's shift process more rationally, shift gears effective.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: solid input shaft 1, the solid shaft gear 11 that is connected, hollow input shaft 2, the hollow shaft synchromesh gear 21 that is connected, the hollow shaft gear 22 that is connected, odd number gear jack shaft 3, odd number gear jack shaft empty set synchromesh gear 31, synchronous friction wheel 32, odd number gear jack shaft free gear 33, the odd number gear jack shaft gear 34 that is connected, one gear empty set driving gear 35, one gear three gear sliding sleeves 36, three gear empty set driving gears 37, five gear empty set driving gears 38, five keep off the sliding sleeve 39 that reverses gear, even number gear jack shaft 4, the even number gear jack shaft gear 41 that is connected, two gear empty set driving gears 42, two gear four gear sliding sleeves 43, four gear empty set driving gears 44, six gear empty set driving gears 45, six gear sliding sleeves 46, output shaft 5, seven gear sliding sleeves 51, one gear two keeps off the driven gear 52 that is connected, three gears four keep off the driven gear 53 that is connected, five gears six keep off the driven gear 54 that is connected, the empty set of reversing gear driving gear 61, idle pulley 62 reverses gear, the driven gear 63 that is connected reverses gear.
Embodiment
Below in conjunction with brief description of the drawings and embodiment, the utility model is described in further detail.
Referring to Fig. 1, the twin countershaft transmission structure that a kind of hollow shaft is synchronous, comprise solid input shaft 1 and hollow input shaft 2, described solid input shaft 1 keeps off jack shaft 3 by odd number and coordinates with output shaft 5 transmissions, and described hollow input shaft 2 keeps off jack shaft 4 by even number and coordinates with output shaft 5 transmissions;
On described hollow input shaft 2, be arranged with successively the hollow shaft synchromesh gear 21 that is connected from its head end to end, the hollow shaft gear 22 that is connected, described hollow shaft be connected gear 22 respectively with odd number gear jack shaft free gear 33, the even number gear jack shaft gear 41 that is connected is meshed, described hollow shaft synchromesh gear 21 and the odd number gear jack shaft empty set synchromesh gear 31 that is connected is meshed, on described odd number gear jack shaft 3, be arranged with successively odd number gear jack shaft empty set synchromesh gear 31 from its head end to end, synchronous friction wheel 32, odd number gear jack shaft free gear 33, the odd number gear jack shaft gear 34 that is connected, odd number gear jack shaft 3 keeps off jack shaft empty set synchromesh gear 31 with odd number respectively by synchronous friction wheel 32, 33 transmissions of odd number gear jack shaft free gear coordinate, described odd number gear jack shaft gear 34 and solid shaft sheathed on solid input shaft 1 gear 11 that is connected that is connected is meshed.
Described odd number gear jack shaft 3 comprises from its head end to end successively sheathed odd number gear jack shaft empty set synchromesh gear 31, synchronous friction wheel 32, odd number gear jack shaft free gear 33, the odd number gear jack shaft gear 34 that is connected, one gear empty set driving gear 35, one gear three gear sliding sleeves 36, three gear empty set driving gears 37, five gear empty set driving gears 38 and five keep off the sliding sleeve 39 that reverses gear, described even number gear jack shaft 4 comprises the gear 41 that is connected from its head end to end successively sheathed even number gear jack shaft, two gear empty set driving gears 42, two gear four gear sliding sleeves 43, four gear empty set driving gears 44, six gear empty set driving gears 45 and six gear sliding sleeves 46, described output shaft 5 comprises from its head end to end successively sheathed seven gear sliding sleeves 51, one gear two keeps off the driven gear 52 that is connected, three gear four gears be connected driven gear 53 and the five gear six gears driven gears 54 that are connected,
A described gear two keeps off the driven gear 52 that is connected and is meshed with a gear empty set driving gear 35, two gear empty set driving gears 42 respectively, described three gears four keep off the driven gear 53 that is connected and are meshed with three gear empty set driving gears 37, four gear empty set driving gears 44 respectively, and described five gears six keep off the driven gear 54 that is connected and are meshed with five gear empty set driving gears 38, six gear empty set driving gears 45 respectively;
Described odd number gear jack shaft 3 coordinates with a gear empty set driving gear 35, three gear empty set driving gear 37 transmissions respectively by gear three gear sliding sleeves 36, and odd number gear jack shaft 3 is kept off 38 transmissions of empty set driving gear and coordinated by the five gears sliding sleeve 39 and five that reverses gear; Even number gear jack shaft 4 coordinates with two gear empty set driving gears 42, four gear empty set driving gear 44 transmissions respectively by two gear four gear sliding sleeves 43, and even number gear jack shaft 4 coordinates with six gear empty set driving gear 45 transmissions by six gear sliding sleeves 46.
The end of described solid input shaft 1 coordinates with the head end transmission of output shaft 5 by seven gear sliding sleeves 51.
The described odd number gear jack shaft gear 33 that is connected keeps off jack shaft free gear 41 numbers of teeth with even number and equates; A described gear empty set driving gear 35 is consistent with two gear empty set driving gear 42 shapes, and described three gear empty set driving gears 37 are consistent with four gear empty set driving gear 44 shapes, and described five gear empty set driving gears 38 are consistent with six gear empty set driving gear 45 shapes.
Described even number gear jack shaft the be connected gear ratio of gear 22 of gear 41 and hollow shaft that is connected is a, and described odd number gear jack shaft the be connected gear ratio of gear 11 of gear 34 and solid shaft that is connected is b, between gear, compares q=a/b;
The be connected gear ratio of synchromesh gear 21 of described odd number gear jack shaft empty set synchromesh gear 31 and hollow shaft is c, c=b/q.
Reverse gear idle pulley 62 and the reversing gear of output shaft 5 end settings that what described odd number gear jack shaft 3 arranged reverse gear empty set driving gear 61 keep off jack shaft 4 end settings by even number driven gear 63 transmissions that are connected coordinate, described in the empty set driving gear 61 that reverses gear keep off jack shaft 3 transmissions with odd number and coordinate by the five gears sliding sleeve 39 that reverses gear.
A process for gear for the synchronous twin countershaft transmission structure of hollow shaft, described process for gear comprises the following steps:
The first step: synchronous speed: the rotating speed that utilizes gear sliding sleeve to be entered and gear driving gear to be entered on the synchronous jack shaft of synchronous friction wheel 32;
Second step: in conjunction with sliding sleeve: when wait entering gear sliding sleeve with in the time that the rotating speed that enters gear driving gear is identical, synchronous friction wheel 32 departs from, and same rotational speed gear sliding sleeve to be entered combines with the spline pair of gear driving gear to be entered;
The 3rd step: move back gear, powershift: double-clutch power switches, dual input shaft powershift, waits to move back gear sliding sleeve and waits that moving back gear driving gear separates, and shift process completes.
The described first step: synchronous speed is divided into three kinds of situations:
The first be when wait enter gear driving gear with wait moving back gear driving gear while being meshed with same driven gear, gear driving gear to be entered is with to wait to move back gear driving gear rotating speed identical, it is consistent that odd number gear jack shaft free gear 33 and even number keep off jack shaft gear 41 shapes that are connected, rotating speed is identical, control on even number gear jack shaft 4 and keep off jack shaft free gear 33 with the friction wheel 32 of synchronizeing of its spline fitted near odd number, make odd number gear jack shaft 3 identical with the rotating speed of even number gear jack shaft 4, thereby make gear sliding sleeve to be entered identical with the rotating speed of gear driving gear to be entered, now synchronous speed step completes,
The second be when wait enter gear driving gear from wait moving back gear driving gear while being meshed with different driven gears, gear driving gear to be entered with wait to move back gear driving gear in, the driving gear of blocking in odd number and the rotating ratio of the driving gear blocked in even number are q square, control on even number gear jack shaft 4 and keep off jack shaft empty set synchromesh gear 31 with the friction wheel 32 of synchronizeing of its spline fitted near odd number, make the rotating speed of odd number gear jack shaft 3 and even number gear jack shaft 4 differ identical q square, thereby make gear sliding sleeve to be entered identical with the rotating speed of gear driving gear to be entered, now synchronous speed step completes,
The third is when wait enter gear or have one to be seven gears in moving back gear time, rotating ratio between output shaft 5 and six gear empty set driving gears 45 equals a*q, control on even number gear jack shaft 4 and keep off jack shaft empty set synchromesh gear 31 with the friction wheel 32 of synchronizeing of its spline fitted near odd number, make the rotating ratio of solid input shaft 1 and even number gear jack shaft 4 equal a*q, thereby make seven gear sliding sleeves 51 identical with the rotating speed of solid input shaft 1, now synchronous speed step completes.
Principle of the present utility model is described as follows:
The feature of existing synchronizer is to rely on synchronous conical ring effect to realize engagement gear ring to synchronize with gear rotational speed, synchronous conical ring makes two scripts have the parts of very large speed discrepancy to reduce speed discrepancy by interior non-rigid mode in the short time, and then the engagement gear ring of same rotational speed engages in the clear with gear-wheel gear-ring.Conventional synchronizer is divided into two parts by the utility model, and a part is synchronous friction wheel 32, and another part is sliding sleeve, respectively the synchronous conical ring of corresponding synchronizer and engagement gear ring.In whole design, only use a synchronous friction wheel 32 and supporting synchromesh gear thereof, realize the function of many group synchronizers, make the synchronization of gear sliding sleeve to be entered and gear driving gear to be entered, simplify the control difficulty of DCT, cost of production and arrangement space are effectively saved, effectively shorten the length of transmission shaft, improved the mechanical property of transmission shaft.
Synchronous friction wheel 32: be butterfly part, endoporus is provided with internal spline and matches with the external splines on axle, synchronous friction wheel 32 rotates with axle, can not relatively rotate with axle, can slide axially, on the outer round surface of synchronous friction wheel 32, be processed with groove, for moving axially operation simultaneously; Synchronous friction wheel 32 both sides end faces are processed with the conical surface, form friction pair for the conical surface corresponding to its mating part (synchromesh gear), can pass through overall viewing range; The design, by synchronous friction wheel 32 is applied to certain axial force, makes synchronous friction wheel 32 link together by friction pair with mating part (synchromesh gear).
Between gear than q: i.e. gearbox velocity ratio geometric ratio coefficient, the gear velocity ratio of gearbox becomes Geometric Sequence to arrange, its common ratio is adjacent high gear velocity ratio and the ratio of low gear velocity ratio, is called between gear and compares.In the utility model, q=a/b, wherein, a is even number gear jack shaft the be connected gear ratio of gear 22 of gear 41 and hollow shaft that is connected, b is odd number gear jack shaft the be connected gear ratio of gear 11 of gear 34 and solid shaft that is connected.
Shift process is analyzed, and gearshift is divided into three kinds of situations: gear driving gear to be entered keeps off driving gear and is meshed with same driven gear with waiting to move back; Gear driving gear to be entered from wait to move back gear driving gear and be meshed with different driven gears; Enter seven gears and move back seven gears.
1, when wait enter gear driving gear with wait moving back gear driving gear while being meshed with same driven gear: gear driving gear to be entered with wait to move back that to keep off driving gear rotating speed consistent, at this moment need to make odd number gear jack shaft 3 identical with even number gear jack shaft 4 rotating speeds, gear sliding sleeve to be entered could engage with gear driving gear to be entered.
For example: a gear upshift two is kept off: before gearshift, solid input shaft 1 provides power, being fixed on solid shaft on solid input shaft 1 gear 11 that is connected drives the even number gear jack shaft being fixed on odd number gear jack shaft 3 gear 41 that is connected to rotate, thereby drive odd number gear jack shaft 3 with and on gear three gear sliding sleeves 36 and the five gears sliding sleeve 39 that reverses gear rotate, under this working state, one gear three gear sliding sleeves 36 connect a gear empty set driving gear 35, one gear empty set driving gear 35 is kept off sliding sleeve 36 driven rotary by a gear three, power is kept off to the driven gear 52 that is connected by a gear two and be delivered to output shaft 5, two gear empty set driving gears 42 on even number gear jack shaft 4, four gear empty set driving gears 44, six gear empty set driving gears 45, the idle pulley 62 that reverses gear rotates with output shaft 5, and hollow input shaft 2, even number gear jack shaft 4 is all in static or low speed rotation state, odd number gear jack shaft free gear 33 and even number gear jack shaft gear 41 shapes that are connected are consistent, rotating speed is identical, two gear empty set driving gears 42 are consistent with gear empty set driving gear 35 shapes, rotating speed is identical, four gear empty set driving gears 44 are consistent with three gear empty set driving gear 37 shapes, rotating speed is identical, six gear empty set driving gears 45 are consistent with five gear empty set driving gear 38 shapes, rotating speed is identical.
When needing odd number gear to rise even number gear, first synchronous friction wheel 32 is near odd number gear jack shaft free gear 33, because odd number gear jack shaft free gear 33 rotating speeds and even number gear jack shaft are connected, the rotating speed of gear 41 is identical, synchronous friction wheel 32 is near odd number gear jack shaft free gear 33, make the friction of odd number gear jack shaft free gear 33 drive even number gear jack shaft 4 to rotate, now even number gear jack shaft 4 rotating speeds equal the rotating speed of odd number gear jack shaft 3, thereby make even number gear jack shaft 4 rotating speeds equal the rotating speed of two gear empty set driving gears 42, now, two gear four gear sliding sleeve 43 rotating speeds equal two gear empty set driving gear 42 rotating speeds, synchronization completes,
Then, synchronous friction wheel 32 departs from, and two gear four gear sliding sleeves 43 carry out sliding sleeve engagement near two gear empty set driving gears 42;
Finally, double-clutch power switches, and when solid input shaft 1 runs out of steam, hollow input shaft 2 obtains power, and gear three gear sliding sleeves 36 depart from a gear empty set driving gear 35, and shift process completes.Other gear driving gears to be entered are with to wait to move back shift process and said process that gear driving gear is meshed with same driven gear similar.
2, when wait enter gear driving gear from wait moving back gear driving gear while being meshed with different driven gears; Gear driving gear to be entered with wait to move back gear driving gear in, the driving gear of blocking in odd number and the rotating ratio of the driving gear blocked in even number are q square, at this moment need to make the rotating speed of odd number gear jack shaft 3 and even number gear jack shaft 4 differ identical q square, gear sliding sleeve to be entered could engage with gear driving gear to be entered.
For example: two gear upshifts three are kept off: before gearshift, hollow input shaft 2 provides power, being fixed on hollow shaft on hollow input shaft 2 gear 22 that is connected drives the even number gear jack shaft being fixed on even number gear jack shaft 4 gear 41 that is connected to rotate, thereby drive even number gear jack shaft 4 with and on two gear four gear sliding sleeves 43 and six gear sliding sleeves 46 rotate, under this working state, two gear four gear sliding sleeves 43 connect two gear empty set driving gears 42, two gear empty set driving gears 42 are kept off sliding sleeve 43 driven rotary by two gears four, power keeps off by a gear two driven gear 52 that is connected and is delivered to output shaft 5, a gear empty set driving gear 35 on odd number gear jack shaft 3, three gear empty set driving gears 37, five gear empty set driving gears 38, the empty set of reversing gear driving gear 61 is along with output shaft 5 rotates, and solid input shaft 1, odd number gear jack shaft 3 is all in static or low speed rotation state, because solid shaft is connected, gear 11 and odd number gear jack shaft the be connected ratio of gear ratio 1/c of synchromesh gear 21 and odd number gear jack shaft empty set synchromesh gear 31 of gear ratio 1/b and the hollow shaft of gear 34 that is connected is q, solid input shaft 1 now the ratio of the rotating speed of rotating speed and hollow input shaft 2 be q,
When needing even number gear upshift odd number gear, first synchronous friction wheel 32 is near odd number gear jack shaft empty set synchromesh gear 31, because hollow shaft is connected, gear 22 and even number gear jack shaft gear ratio 1/a and the solid shaft of gear 41 the be connected ratio of gear ratio 1/b of gear 34 of gear 11 and odd number gear jack shaft that is connected that is connected is 1/q, solid input shaft 1 now the ratio of the rotating speed of rotating speed and hollow input shaft 2 be q, and solid shaft gear 11 and odd number gear jack shaft gear ratio 1/b and the hollow shaft of gear 34 the be connected ratio of gear 41 gear ratio 1/a of gear 22 and even number gear jack shaft that is connected that is connected that is connected is q, to keep off jack shaft 4 rotating ratios be q square for odd number gear jack shaft 3 rotating speeds and even number, odd number gear jack shaft 3 rotating speeds and the rotating ratios that two gears four keep off sliding sleeves 43 are q square, and now three gear empty set driving gears 37 and two gear empty set driving gears 42 than for q square, odd number gear jack shaft 3 rotating speeds and two rotating ratios that keep off empty set driving gears 42 are q square, thereby gear three gear sliding sleeve 36 rotating speeds equal three gear empty set driving gear 37 rotating speeds, synchronization completes,
When a gear three keeps off sliding sleeve 36 and three gear empty set driving gear 37 rotating speeds when identical, synchronous friction wheel 32 departs from, and gear three gear sliding sleeves 36 carry out sliding sleeve engagement near three gear empty set driving gears 37;
Finally, double-clutch power switches, and when hollow input shaft 2 runs out of steam, solid input shaft 1 obtains power, and two gear four gear sliding sleeves 43 depart from two gear empty set driving gears 42, and shift process completes.Other gear driving gears to be entered are to wait to move back process and said process that gear driving gear is meshed with different driven gears similar.
3, when wait enter gear or have one to be seven gears in moving back gear time, rotating ratio between output shaft 5 and six gear empty set driving gears 45 equals a*q, at this moment need to make the rotating ratio of solid input shaft 1 and even number gear jack shaft 4 to equal a*q, just can make to keep off sliding sleeve 51 and equate with the rotating speed of solid input shaft 1, seven gear sliding sleeves 51 could engage with the end of solid input shaft 1.
For example: six gear upshifts seven are kept off, control on even number gear jack shaft 4 and keep off jack shaft empty set synchromesh gear 31 with the friction wheel 32 of synchronizeing of its spline fitted near odd number, before gearshift, hollow input shaft 2 provides power, being fixed on hollow shaft on hollow input shaft 2 gear 22 that is connected drives the even number gear jack shaft being fixed on even number gear jack shaft 4 gear 41 that is connected to rotate, thereby drive even number gear jack shaft 4 with and on two gear four gear sliding sleeves 43 and six gear sliding sleeves 46 rotate, under this working state, because five gear six gears are connected, the gear ratio of driven gear 54 and six gear empty set driving gears 45 is 1/ (a*q), so the rotating ratio of output shaft 5 rotating speeds and even number gear jack shaft 4 is a*q.
In the time preparing to shift gears, synchronous friction wheel 32 is near odd number gear jack shaft empty set synchromesh gear 31, make the synchronization of solid input shaft 1 and output shaft 5, because solid shaft is connected, the be connected gear ratio of gear 34 of gear 11 and odd number gear jack shaft is 1/b, the be connected gear ratio of synchromesh gear 21 of odd number gear jack shaft empty set synchromesh gear 31 and hollow shaft is b/q, and hollow shaft the be connected gear ratio of gear 41 of gear 22 and even number gear jack shaft that is connected is 1/a, so the rotating ratio of the rotating speed of solid input shaft 1 and even number gear jack shaft 4 is a*q;
When the solid input shaft 1 on seven gear sliding sleeve 51 both sides and output shaft 5 rotating speeds reach while synchronizeing, synchronous friction wheel 32 departs from, promotion sliding sleeve seven keeps off sliding sleeve 51 and engages with the end of solid input shaft 1, now being rigidly connected of solid input shaft 1 and output shaft 5, then double-clutch power switches, and when hollow input shaft 2 runs out of steam, solid input shaft 1 obtains power; Finally, six gear sliding sleeves 46 depart from the shift process that six gear empty set driving gears 45, six gear upshifts seven keep off to be completed, seven gears move back gear six gear processes and said process similar.
Embodiment 1:
Referring to Fig. 1, the twin countershaft transmission structure that a kind of hollow shaft is synchronous, comprise solid input shaft 1 and hollow input shaft 2, described solid input shaft 1 keeps off jack shaft 3 by odd number and coordinates with output shaft 5 transmissions, and described hollow input shaft 2 keeps off jack shaft 4 by even number and coordinates with output shaft 5 transmissions, on described hollow input shaft 2, be arranged with successively the hollow shaft synchromesh gear 21 that is connected from its head end to end, the hollow shaft gear 22 that is connected, described hollow shaft be connected gear 22 respectively with odd number gear jack shaft free gear 33, the even number gear jack shaft gear 41 that is connected is meshed, described hollow shaft synchromesh gear 21 and the odd number gear jack shaft empty set synchromesh gear 31 that is connected is meshed, on described odd number gear jack shaft 3, be arranged with successively odd number gear jack shaft empty set synchromesh gear 31 from its head end to end, synchronous friction wheel 32, odd number gear jack shaft free gear 33, the odd number gear jack shaft gear 34 that is connected, odd number gear jack shaft 3 keeps off jack shaft empty set synchromesh gear 31 with odd number respectively by synchronous friction wheel 32, 33 transmissions of odd number gear jack shaft free gear coordinate, described odd number gear jack shaft gear 34 and solid shaft sheathed on solid input shaft 1 gear 11 that is connected that is connected is meshed, described odd number gear jack shaft 3 comprises from its head end to end successively sheathed odd number gear jack shaft empty set synchromesh gear 31, synchronous friction wheel 32, odd number gear jack shaft free gear 33, the odd number gear jack shaft gear 34 that is connected, one gear empty set driving gear 35, one gear three gear sliding sleeves 36, three gear empty set driving gears 37, five gear empty set driving gears 38 and five keep off the sliding sleeve 39 that reverses gear, described even number gear jack shaft 4 comprises the gear 41 that is connected from its head end to end successively sheathed even number gear jack shaft, two gear empty set driving gears 42, two gear four gear sliding sleeves 43, four gear empty set driving gears 44, six gear empty set driving gears 45 and six gear sliding sleeves 46, described output shaft 5 comprises from its head end to end successively sheathed seven gear sliding sleeves 51, one gear two keeps off the driven gear 52 that is connected, three gear four gears be connected driven gear 53 and the five gear six gears driven gears 54 that are connected, a described gear two keeps off the driven gear 52 that is connected and is meshed with a gear empty set driving gear 35, two gear empty set driving gears 42 respectively, described three gears four keep off the driven gear 53 that is connected and are meshed with three gear empty set driving gears 37, four gear empty set driving gears 44 respectively, and described five gears six keep off the driven gear 54 that is connected and are meshed with five gear empty set driving gears 38, six gear empty set driving gears 45 respectively, described odd number gear jack shaft 3 coordinates with a gear empty set driving gear 35, three gear empty set driving gear 37 transmissions respectively by gear three gear sliding sleeves 36, and odd number gear jack shaft 3 is kept off 38 transmissions of empty set driving gear and coordinated by the five gears sliding sleeve 39 and five that reverses gear, even number gear jack shaft 4 coordinates with two gear empty set driving gears 42, four gear empty set driving gear 44 transmissions respectively by two gear four gear sliding sleeves 43, and even number gear jack shaft 4 coordinates with six gear empty set driving gear 45 transmissions by six gear sliding sleeves 46, the end of described solid input shaft 1 coordinates with the head end transmission of output shaft 5 by seven gear sliding sleeves 51, the described odd number gear jack shaft gear 33 that is connected keeps off jack shaft free gear 41 numbers of teeth with even number and equates, a described gear empty set driving gear 35 is consistent with two gear empty set driving gear 42 shapes, and described three gear empty set driving gears 37 are consistent with four gear empty set driving gear 44 shapes, and described five gear empty set driving gears 38 are consistent with six gear empty set driving gear 45 shapes, reverse gear idle pulley 62 and the reversing gear of output shaft 5 end settings that what described odd number gear jack shaft 3 arranged reverse gear empty set driving gear 61 keep off jack shaft 4 end settings by even number driven gear 63 transmissions that are connected coordinate, described in the empty set driving gear 61 that reverses gear keep off jack shaft 3 transmissions with odd number and coordinate by the five gears sliding sleeve 39 that reverses gear.
Described even number gear jack shaft the be connected gear ratio of gear 22 of gear 41 and hollow shaft that is connected is a, and described odd number gear jack shaft the be connected gear ratio of gear 11 of gear 34 and solid shaft that is connected is b, between gear, compares q=a/b;
The be connected gear ratio of synchromesh gear 21 of described odd number gear jack shaft empty set synchromesh gear 31 and hollow shaft is c, c=b/q.
A process for gear for the synchronous twin countershaft transmission structure of hollow shaft, described process for gear comprises the following steps:
The first step: synchronous speed: the rotating speed that utilizes gear sliding sleeve to be entered and gear driving gear to be entered on the synchronous jack shaft of synchronous friction wheel 32;
Synchronous speed is divided into three kinds of situations:
The first be when wait enter gear driving gear with wait moving back gear driving gear while being meshed with same driven gear, gear driving gear to be entered is with to wait to move back gear driving gear rotating speed identical, it is consistent that odd number gear jack shaft free gear 33 and even number keep off jack shaft gear 41 shapes that are connected, rotating speed is identical, control on even number gear jack shaft 4 and keep off jack shaft free gear 33 with the friction wheel 32 of synchronizeing of its spline fitted near odd number, make odd number gear jack shaft 3 identical with the rotating speed of even number gear jack shaft 4, thereby make gear sliding sleeve to be entered identical with the rotating speed of gear driving gear to be entered, now synchronous speed step completes,
The second be when wait enter gear driving gear from wait moving back gear driving gear while being meshed with different driven gears, gear driving gear to be entered with wait to move back gear driving gear in, the driving gear of blocking in odd number and the rotating ratio of the driving gear blocked in even number are q square, control on even number gear jack shaft 4 and keep off jack shaft empty set synchromesh gear 31 with the friction wheel 32 of synchronizeing of its spline fitted near odd number, make the rotating speed of odd number gear jack shaft 3 and even number gear jack shaft 4 differ identical q square, thereby make gear sliding sleeve to be entered identical with the rotating speed of gear driving gear to be entered, now synchronous speed step completes,
The third is when wait enter gear or have one to be seven gears in moving back gear time, rotating ratio between output shaft 5 and six gear empty set driving gears 45 equals a*q, control on even number gear jack shaft 4 and keep off jack shaft empty set synchromesh gear 31 with the friction wheel 32 of synchronizeing of its spline fitted near odd number, make the rotating ratio of solid input shaft 1 and even number gear jack shaft 4 equal a*q, thereby make seven gear sliding sleeves 51 identical with the rotating speed of solid input shaft 1, now synchronous speed step completes;
Second step: in conjunction with sliding sleeve: when wait entering gear sliding sleeve with in the time that the rotating speed that enters gear driving gear is identical, synchronous friction wheel 32 departs from, and same rotational speed gear sliding sleeve to be entered combines with the spline pair of gear driving gear to be entered;
The 3rd step: move back gear, powershift: double-clutch power switches, dual input shaft powershift, waits to move back gear sliding sleeve and waits that moving back gear driving gear separates, and shift process completes.
Claims (6)
1. the twin countershaft transmission structure that hollow shaft is synchronous, comprise solid input shaft (1) and hollow input shaft (2), described solid input shaft (1) keeps off jack shaft (3) by odd number and coordinates with output shaft (5) transmission, described hollow input shaft (2) keeps off jack shaft (4) by even number and coordinates with output shaft (5) transmission, it is characterized in that:
Described hollow input shaft (2) is upper is arranged with the hollow shaft synchromesh gear (21) that is connected successively from its head end to end, the hollow shaft gear (22) that is connected, described hollow shaft be connected gear (22) respectively with odd number gear jack shaft free gear (33), the even number gear jack shaft gear (41) that is connected is meshed, described hollow shaft synchromesh gear (21) and the odd number gear jack shaft empty set synchromesh gear (31) that is connected is meshed, the upper odd number gear jack shaft empty set synchromesh gear (31) that is arranged with successively from its head end to end of described odd number gear jack shaft (3), synchronous friction wheel (32), odd number gear jack shaft free gear (33), the odd number gear jack shaft gear (34) that is connected, odd number gear jack shaft (3) keeps off jack shaft empty set synchromesh gear (31) with odd number respectively by synchronous friction wheel (32), the transmission of odd number gear jack shaft free gear (33) coordinates, be connected gear (34) and solid input shaft (1) of described odd number gear jack shaft gone up the sheathed solid shaft gear (11) that is connected and is meshed.
2. the synchronous twin countershaft transmission structure of a kind of hollow shaft according to claim 1, is characterized in that:
Described odd number gear jack shaft (3) comprises from its head end to end successively sheathed odd number gear jack shaft empty set synchromesh gear (31), synchronous friction wheel (32), odd number gear jack shaft free gear (33), the odd number gear jack shaft gear (34) that is connected, one gear empty set driving gear (35), one gear three gear sliding sleeves (36), three gear empty set driving gears (37), five gear empty set driving gears (38) and five keep off the sliding sleeve (39) that reverses gear, described even number gear jack shaft (4) comprises the gear (41) that is connected from its head end to end successively sheathed even number gear jack shaft, two gear empty set driving gears (42), two gear four gear sliding sleeves (43), four gear empty set driving gears (44), six gear empty set driving gears (45) and six gear sliding sleeves (46), described output shaft (5) comprises from its head end to end successively sheathed seven gear sliding sleeves (51), one gear two keeps off the driven gear (52) that is connected, be connected driven gear (53) and five gears six of three gear four gears keep off the driven gear (54) that is connected,
A described gear two keeps off the driven gear (52) that is connected and is meshed with a gear empty set driving gear (35), two gear empty set driving gears (42) respectively, described three gears four keep off the driven gear (53) that is connected and are meshed with three gear empty set driving gears (37), four gear empty set driving gears (44) respectively, and described five gears six keep off the driven gear (54) that is connected and are meshed with five gear empty set driving gears (38), six gear empty set driving gears (45) respectively;
Described odd number gear jack shaft (3) coordinates with a gear empty set driving gear (35), three gear empty set driving gear (37) transmissions respectively by gear three gear sliding sleeves (36), and odd number gear jack shaft (3) is kept off empty set driving gear (38) transmissions and coordinated by the five gears sliding sleeve (39) and five that reverses gear; Even number gear jack shaft (4) coordinates with two gear empty set driving gears (42), four gear empty set driving gear (44) transmissions respectively by two gear four gear sliding sleeves (43), and even number gear jack shaft (4) coordinates with six gear empty set driving gear (45) transmissions by six gear sliding sleeves (46).
3. the synchronous twin countershaft transmission structure of a kind of hollow shaft according to claim 2, is characterized in that: the end of described solid input shaft (1) coordinates with the head end transmission of output shaft (5) by seven gear sliding sleeves (51).
4. the synchronous twin countershaft transmission structure of a kind of hollow shaft according to claim 2, is characterized in that: the described odd number gear jack shaft gear (33) that is connected keeps off jack shaft free gear (41) number of teeth with even number and equates; A described gear empty set driving gear (35) is consistent with two gear empty set driving gear (42) shapes, described three gear empty set driving gears (37) are consistent with four gear empty set driving gear (44) shapes, and described five gear empty set driving gears (38) are consistent with six gear empty set driving gear (45) shapes.
5. the synchronous twin countershaft transmission structure of a kind of hollow shaft according to claim 4, is characterized in that:
Described even number gear jack shaft the be connected gear ratio of gear (22) of gear (41) and hollow shaft that is connected is a, and described odd number gear jack shaft the be connected gear ratio of gear (11) of gear (34) and solid shaft that is connected is b, between gear, compares q=a/b;
The be connected gear ratio of synchromesh gear (21) of described odd number gear jack shaft empty set synchromesh gear (31) and hollow shaft is c, c=b/q.
6. the twin countershaft transmission structure synchronous according to a kind of hollow shaft described in claim 2 or 3, is characterized in that:
Driven gear (63) transmission that is connected of the empty set driving gear (61) that reverses gear that described odd number gear jack shaft (3) arranges keep off jack shaft (4) the end setting idle pulley that reverses gear (62) by even number and reversing gear of output shaft (5) end setting coordinates, described in the empty set driving gear (61) that reverses gear keep off jack shaft (3) transmission with odd number and coordinate by the five gears sliding sleeve (39) that reverses gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095245.2U CN203770548U (en) | 2014-03-04 | 2014-03-04 | Double middle shaft transmission structure with synchronous hollow shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095245.2U CN203770548U (en) | 2014-03-04 | 2014-03-04 | Double middle shaft transmission structure with synchronous hollow shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203770548U true CN203770548U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420095245.2U Withdrawn - After Issue CN203770548U (en) | 2014-03-04 | 2014-03-04 | Double middle shaft transmission structure with synchronous hollow shaft |
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| CN (1) | CN203770548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821882A (en) * | 2014-03-04 | 2014-05-28 | 东风商用车有限公司 | Double middle shaft transmission structure with hollow shaft synchronism and shifting method thereof |
-
2014
- 2014-03-04 CN CN201420095245.2U patent/CN203770548U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821882A (en) * | 2014-03-04 | 2014-05-28 | 东风商用车有限公司 | Double middle shaft transmission structure with hollow shaft synchronism and shifting method thereof |
| CN103821882B (en) * | 2014-03-04 | 2016-05-11 | 东风商用车有限公司 | Twin countershaft transmission structure and process for gear thereof that a kind of hollow shaft is synchronous |
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