CN113483065A - Eight-gear double-input gearbox - Google Patents
Eight-gear double-input gearbox Download PDFInfo
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- CN113483065A CN113483065A CN202110943115.4A CN202110943115A CN113483065A CN 113483065 A CN113483065 A CN 113483065A CN 202110943115 A CN202110943115 A CN 202110943115A CN 113483065 A CN113483065 A CN 113483065A
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- 238000010168 coupling process Methods 0.000 claims abstract description 38
- 238000005859 coupling reaction Methods 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000009977 dual effect Effects 0.000 claims description 11
- 230000000712 assembly Effects 0.000 claims description 5
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/006—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising eight forward speeds
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention provides an eight-gear double-input gearbox which can finish eight-gear output through seven pairs of gears, reduce the axial length of the gearbox and meet the application requirements of a vehicle body. The long input shaft penetrates through the central avoidance hole of the short input shaft and is convex back and arranged towards the output shaft, the output shaft and the long input shaft are coaxially arranged, the front end of the output shaft is sleeved with a direct gear synchronizer, and a second-fourth gear, a fifth-seventh gear, an output shaft synchronizer and a first-third gear are sequentially arranged behind the direct gear synchronizer of the output shaft; the rear convex part of the long input shaft is sequentially provided with a coupling synchronizer, a long input shaft low-gear, a long input shaft synchronizer and a long input shaft high-gear; the short input shaft is positioned in the gearbox, the short input shaft high-gear, the short input shaft synchronizer and the short input shaft low-gear are sequentially arranged in the axial direction, and the meshing connection structure is arranged at the axial tail end of the short input shaft corresponding to the front part of the coupling synchronizer.
Description
Technical Field
The invention relates to the technical field of gearbox structures, in particular to an eight-gear double-input gearbox.
Background
The gear output of the existing gearbox is selected by arranging corresponding synchronizers on an intermediate shaft and an output shaft, the gear output is selected, the output of each gear needs a pair of output gears, the axial length of the gearbox is relatively long, and a new gearbox structure is urgently needed in order to shorten the axial length of the gearbox.
Disclosure of Invention
Aiming at the problems, the invention provides an eight-gear double-input gearbox which can finish eight-gear output through seven pairs of gears, reduce the axial length of the gearbox and meet the application requirements of a vehicle body.
An eight speed dual input transmission, comprising:
a long input shaft;
a short input shaft,
An output shaft;
a long intermediate shaft;
a short intermediate shaft;
the long input shaft penetrates through the central avoidance hole of the short input shaft and is convex back and arranged towards the output shaft, the output shaft and the long input shaft are coaxially arranged, the front end of the output shaft is sleeved with a direct gear synchronizer, and a second-fourth gear, a fifth-seventh gear, an output shaft synchronizer and a third-gear are sequentially arranged behind the direct gear synchronizer of the output shaft;
the rear convex part of the long input shaft is sequentially provided with a coupling synchronizer, a long input shaft low-gear, a long input shaft synchronizer and a long input shaft high-gear;
the short input shaft is positioned in the gearbox, a short input shaft high-gear, a short input shaft synchronizer and a short input shaft low-gear are sequentially arranged in the axial direction, and the axial tail end of the short input shaft is provided with a meshing connection structure corresponding to the front part of the coupling synchronizer;
the short intermediate shaft is arranged at the axial position from the long input shaft low-gear to the second-fourth-gear, the short intermediate shaft low-gear, the short intermediate shaft high-gear and the short intermediate shaft second-fourth-gear are sequentially arranged in the axial direction of the short intermediate shaft, the short intermediate shaft low-gear is meshed with the long input shaft low-gear, the short intermediate shaft high-gear is meshed with the long input shaft high-gear, and the short intermediate shaft second-fourth-gear is meshed with the second-fourth-gear;
the long intermediate shaft is provided with a long intermediate shaft high-gear, a long intermediate shaft low-gear, a long intermediate shaft five-seven-gear and a long intermediate shaft one-three-gear, the long intermediate shaft high-gear is meshed and connected with a short input shaft high-gear, the long intermediate shaft low-gear is meshed and connected with a short input shaft low-gear, the long intermediate shaft five-seven-gear is meshed and connected with a five-seven-gear, and the long intermediate shaft one-three-gear is meshed and connected with a three-gear;
the rear end of the output shaft axially protrudes out of the gearbox and is used for connecting an output part;
the front end input parts of the long input shaft and the short input shaft respectively protrude out of the gearbox shell and are used for being connected with corresponding power input parts.
It is further characterized in that:
the long middle shaft penetrates through the center avoidance hole of the short middle shaft, two ends of the long middle shaft are respectively arranged in a convex manner, and the long middle shaft is arranged in parallel to the output shaft;
the long middle shaft penetrates through the center avoidance hole of the short middle shaft, two ends of the long middle shaft are respectively arranged in a convex manner to form middle shaft assemblies, and a plurality of sets of the middle shaft assemblies are uniformly distributed around the periphery of the output shaft;
preferably, the two sets of intermediate shaft assemblies are symmetrically arranged at 180 degrees relative to the output shaft to form a double-intermediate shaft structure;
preferably, the three sets of intermediate shaft assemblies are uniformly distributed and arranged in a ring shape relative to the outer circumference of the output shaft to form a three-intermediate shaft structure;
the long middle shaft and the short middle shaft are arranged in different shafts and are respectively arranged in parallel to the output shaft;
the two ends of the long middle shaft in the length direction are respectively positioned and arranged through a long middle shaft front bearing and a long middle shaft rear bearing;
the two ends of the short middle shaft in the length direction are respectively positioned and arranged through a short middle shaft front bearing and a short middle shaft rear bearing;
two ends of the output shaft in the length direction are respectively positioned and arranged through a shaft head bearing of the output shaft and a bearing of the output shaft;
the rear end of the long input shaft in the axial direction is provided with an inner concave hole groove, and the front end of the output shaft is positioned and arranged in the inner concave hole groove through a shaft head bearing of the output shaft, so that the structure is simple;
the long input shaft is supported and arranged through at least one group of long input shaft bearings in the length direction;
the short input shaft is supported and arranged through at least one group of short input shaft bearings in the length direction.
After the technical scheme is adopted, the two coaxially arranged input shafts are provided with the corresponding synchronizers for shifting gears, so that the gear shifting is not limited to be carried out on the intermediate shaft or the output shaft, the eight gears are realized by seven groups of gears, each input shaft can work independently and also can work in a matched mode, and the power is not interrupted when the input shafts work in a matched mode. Two input powers can be in power coupling at the input end or the output end, so that the power output is increased; it accomplishes eight grades of outputs through seven pairs of gears, has reduced the axial length of gearbox, satisfies the automobile body and is suitable for the demand.
Drawings
FIG. 1 is a schematic diagram of the structure of a first embodiment of the present invention;
FIG. 2 is a schematic block diagram of a second embodiment of the present invention;
the names corresponding to the sequence numbers in the figure are as follows:
a long input shaft 1, a short input shaft 2, a short input shaft bearing 3, a short input shaft high-gear 4, a short input shaft synchronizer 5, a short input shaft low-gear 6, a coupling synchronizer 7, a long input shaft bearing 8, a long input shaft low-gear 9, a long input shaft synchronizer 10, a long input shaft high-gear 11, an output shaft head bearing 12, a direct-gear synchronizer 13, a second-fourth-gear 14, a fifth-seventh-gear 15, an output shaft synchronizer 16, a first-third-gear 17, an output shaft bearing 18, an output shaft 19, a long intermediate shaft front bearing 20, a long intermediate shaft high-gear 21, a long intermediate shaft 22, a long intermediate shaft low-gear 23, a short intermediate shaft front bearing 24, a short intermediate shaft low-gear 25, a short intermediate shaft 26, a short intermediate shaft high-gear 27, a short intermediate shaft second-fourth-gear 28, a short intermediate shaft rear bearing 29, a long fifth-seventh-gear 30, a long intermediate shaft third-gear 31, A long intermediate shaft rear bearing 32, a meshing connection structure 33 and an inner concave hole groove 34.
Detailed Description
An eight-gear double-input gearbox is shown in figures 1 and 2 and comprises a long input shaft 1, a short input shaft 2, an output shaft 19, a long intermediate shaft 22 and a short intermediate shaft 26;
the long input shaft 1 penetrates through a central avoidance hole of the short input shaft 2 to be convex back and is arranged towards the output shaft 19, the output shaft 19 and the long input shaft 1 are coaxially arranged, the front end of the output shaft 19 is sleeved with a direct gear synchronizer 13, and a second-fourth gear 14, a fifth-seventh gear 15, an output shaft synchronizer 16 and a third-gear 17 are sequentially arranged behind the direct gear synchronizer 13 of the output shaft 19;
the rear convex part of the long input shaft 1 is sequentially provided with a coupling synchronizer 7, a long input shaft low-gear 9, a long input shaft synchronizer 10 and a long input shaft high-gear 11;
the short input shaft 2 is provided with a short input shaft high-gear 4, a short input shaft synchronizer 5 and a short input shaft low-gear 6 in sequence in the axial direction of the gearbox, and the axial tail end of the short input shaft 2 is provided with a meshing connection structure 33 corresponding to the front part of the coupling synchronizer;
the short intermediate shaft 26 is arranged at the axial positions of the long input shaft low-gear 9 to the second-fourth-gear 14, the short intermediate shaft 26 is axially provided with a short intermediate shaft low-gear 25, a short intermediate shaft high-gear 27 and a short intermediate shaft second-fourth-gear 28 in sequence, the short intermediate shaft low-gear 25 is arranged in a manner of being meshed with the long input shaft low-gear 9, the short intermediate shaft high-gear 27 is arranged in a manner of being meshed with the long input shaft high-gear 11, and the short intermediate shaft second-fourth-gear 28 is arranged in a manner of being meshed with the second-fourth-gear 14;
the long intermediate shaft 22 is provided with a long intermediate shaft high-gear 21, a long intermediate shaft low-gear 23, a long intermediate shaft five-seven-gear 30 and a long intermediate shaft one-three-gear 31, the long intermediate shaft high-gear 21 is meshed and connected with the short input shaft high-gear 4, the long intermediate shaft low-gear 23 is meshed and connected with the short input shaft low-gear 6, the long intermediate shaft five-seven-gear 30 is meshed and connected with the five-seven-gear 15, and the long intermediate shaft one-three-gear 31 is meshed and connected with the one-three-gear 17;
the rear end of the output shaft 19 protrudes out of the transmission case in the axial direction for connecting an output part;
the front end input parts of the long input shaft 1 and the short input shaft 2 respectively protrude out of the gearbox shell and are used for connecting with corresponding power input parts.
In specific implementation, two ends of the long intermediate shaft 22 in the length direction are respectively positioned and arranged through the long intermediate shaft front bearing 20 and the long intermediate shaft rear bearing 32;
the two ends of the short middle shaft 26 in the length direction are respectively positioned and arranged through a short middle shaft front bearing 24 and a short middle shaft rear bearing 29;
the two ends of the output shaft 19 in the length direction are respectively positioned and arranged through the output shaft head bearing 12 and the output shaft bearing 18;
the rear end of the long input shaft 1 is provided with an inner concave groove 34, and the front end of the output shaft 19 is positioned and arranged in the inner concave groove 34 through the output shaft head bearing 12, so that the structure is simple;
the long input shaft 1 is supported and arranged through at least one group of long input shaft bearings 8 in the length direction;
the short input shaft 2 is supported in the longitudinal direction by at least one set of short input shaft bearings 3.
The first specific embodiment is shown in fig. 1: the long intermediate shaft 22 penetrates through a center avoidance hole of the short intermediate shaft 26, two ends of the long intermediate shaft are respectively arranged in a convex mode to achieve coaxial input, and the long intermediate shaft 22 is arranged in parallel to the output shaft 19. The whole set of intermediate shaft can use single set in this structure, also can arrange two sets of intermediate shafts 180 relative output shaft, forms two intermediate shaft structures to and evenly arrange three sets of intermediate shafts relative output shaft circumference, form three intermediate shaft structures, improve tooth axle intensity, increase the transmission moment of torsion.
The second embodiment is shown in fig. 2: the long intermediate shaft 22 and the short intermediate shaft 26 are arranged non-coaxially, and the long intermediate shaft 22 and the short intermediate shaft 26 are respectively arranged in parallel with the output shaft 26, so that a shell of the gearbox can be set to a shape suitable for a vehicle body space according to requirements.
In the specific implementation: the front end of a long input shaft 1 is a spline and is connected with an external power element for power input, the long input shaft 2 penetrates through the middle of a hollow shaft, the rear end of the long input shaft 1 is connected with a coupling synchronizer 7 and a long input shaft synchronizer 10 through the spline, a long input shaft low-gear 9 and a long input shaft high-gear 11 are sleeved on the long input shaft 1 in a non-sleeved mode, the coupling synchronizer 7 can slide leftwards on the long input shaft 1 to realize the combination of the long input shaft 1 and the short input shaft 2 so as to carry out power transmission, and the long input shaft synchronizer 10 can slide leftwards and rightwards on the long input shaft 1 to respectively realize the combination of the long input shaft 1 and the long input shaft low-gear 9 and the combination of the long input shaft 1 and the long input shaft high-gear 11 so as to carry out power transmission; the long input shaft 1 is connected with the outer shell through a long input shaft bearing 8, and the long input shaft 1 is supported and positioned.
The rear end of the short input shaft 2 is connected with a short input shaft synchronizer 5 through a spline, the short input shaft low-gear 6 and the short input shaft high-gear 4 are sleeved on the short input shaft 2 in an empty mode, the short input shaft synchronizer 5 can slide leftwards and rightwards on the short input shaft 2 to respectively realize the combination of the short input shaft 2 and the short input shaft high-gear 4, and the combination of the short input shaft 2 and the short input shaft low-gear 6, so that power transmission is carried out. The short input shaft 2 is connected with the outer shell through a short input shaft bearing 3, and the short input shaft 2 is supported and positioned.
The output shaft 19 is connected with the direct gear synchronizer 13 and the output shaft synchronizer 16 through splines, and the second-four gear 14, the fifth-seven gear 15 and the third gear 17 are freely sleeved on the output shaft 19. The direct gear synchronizer 13 can slide left and right on the output shaft 19 to respectively realize the combination of the output shaft 19 and the short input shaft high gear 11 and the combination of the output shaft 19 and the second-fourth gear 14, thereby carrying out power transmission; the output shaft synchronizer 16 can slide on the output shaft leftwards and rightwards to respectively realize that the output shaft 19 is combined with the five-seven gear 15 and the output shaft 19 is combined with the first-three gear 17, so that power transmission is carried out. The front end of the output shaft 19 is connected with the long input shaft 1 through an output shaft head bearing 12, and the rear end of the output shaft is connected with the outer shell through an output shaft bearing 18, so that the support and the positioning of the output shaft 19 are realized. The tail end of the output shaft 19 outputs power.
Description of working principle and working process:
the gearbox can work under the condition of any power input, and can also work under the condition that two power inputs are matched.
The long input shaft is used as single power input under the condition of single power input, and the transmission paths of all gears are as follows:
first gear: short input shaft synchronizer right shift, coupling synchronizer left shift, output shaft synchronizer right shift
Power element → long input shaft → coupling synchronizer → short input shaft synchronizer → short input shaft low gear → long intermediate shaft-third gear → first third gear → output shaft synchronizer → output shaft;
and (2) second: long input shaft synchronizer left shift and direct gear synchronizer right shift
Power element → long input shaft synchronizer → long input shaft low gear → short intermediate shaft second and fourth gear → direct gear synchronizer → output shaft;
and (3) third gear: short input shaft synchronizer left shift, coupling gear synchronizer left shift and output shaft synchronizer right shift
Power element → long input shaft → coupling synchronizer → short input shaft synchronizer → short input shaft high gear → long intermediate shaft-third gear → first third gear → output shaft synchronizer → output shaft;
fourth gear: long input shaft synchronizer right shift and direct gear synchronizer right shift
Power element → long input shaft synchronizer → long input shaft high gear → short intermediate shaft second and fourth gear → direct gear synchronizer → output shaft;
fifthly, gear shifting: short input shaft synchronizer right shift, coupling synchronizer left shift, output shaft synchronizer left shift
Power element → long input shaft → coupling synchronizer → short input shaft synchronizer → short input shaft low range gear → long countershaft five-seven range gear → output shaft synchronizer → output shaft;
and sixth gear: long input shaft synchronizer left shift and direct gear synchronizer left shift
Power element → long input shaft synchronizer → long input shaft low gear → short intermediate shaft high gear → long input shaft high gear → direct gear synchronizer → output shaft;
seventh gear: short input shaft synchronizer left shift, coupling synchronizer left shift, output shaft synchronizer left shift
Power element → long input shaft → coupling synchronizer → short input shaft synchronizer → short input shaft high gear → long intermediate shaft five-seventh gear → output shaft synchronizer → output shaft;
eighth gear: long input shaft synchronizer right shift and direct gear synchronizer left shift
Power element → long input shaft synchronizer → long input shaft high gear → direct gear synchronizer → output shaft.
In the single power input condition, a short input shaft is used as a single power input, and the transmission paths of all gears are as follows:
first gear: short input shaft synchronizer right shift and output shaft synchronizer right shift
Power element → short input shaft synchronizer → short input shaft low gear → long intermediate shaft-third gear → output shaft synchronizer → output shaft;
and (2) second: left shift of long input shaft synchronizer, left shift of coupling synchronizer and right shift of direct gear synchronizer
Power element → short input shaft → coupling synchronizer → long input shaft synchronizer → long input shaft low range gear → short intermediate shaft second fourth gear → direct gear synchronizer → output shaft;
and (3) third gear: short input shaft synchronizer left shift and output shaft synchronizer right shift
Power element → short input shaft synchronizer → short input shaft high gear → long intermediate shaft-third gear → output shaft synchronizer → output shaft;
fourth gear: long input shaft synchronizer right shift, coupling synchronizer left shift, direct gear synchronizer right shift
Power element → short input shaft → coupling synchronizer → long input shaft synchronizer → long input shaft top gear → short intermediate shaft second and fourth gear → direct gear synchronizer → output shaft;
fifthly, gear shifting: short input shaft synchronizer right shift and output shaft synchronizer left shift
Power element → short input shaft synchronizer → short input shaft low gear → long intermediate shaft five-seven gear → output shaft synchronizer → output shaft;
and sixth gear: long input shaft synchronizer left shift, coupling synchronizer left shift, direct gear synchronizer left shift
Power element → short input shaft → coupling synchronizer → long input shaft synchronizer → long input shaft low gear → short intermediate shaft high gear → long input shaft high gear → direct gear synchronizer → output shaft;
seventh gear: short input shaft synchronizer left shift and output shaft synchronizer left shift
Power element → short input shaft synchronizer → short input shaft high gear → long intermediate shaft five-seven gear → output shaft synchronizer → output shaft;
eighth gear: long input shaft synchronizer right shift, coupling synchronizer left shift, direct gear synchronizer left shift
Power element → short input shaft → coupling synchronizer → long input shaft synchronizer → long input shaft high gear → direct gear synchronizer → output shaft.
Under the condition that two power inputs are matched, the transmission paths of the gears are as follows:
first gear + first gear: the synchronizer of short input shaft moves right, the synchronizer of coupling moves left, the synchronizer of output shaft moves right, and power is coupled at the input end
First gear and second gear: the short input shaft synchronizer moves to the right, the long input shaft synchronizer moves to the left, the direct gear synchronizer moves to the right, the output shaft synchronizer moves to the right, and power is coupled at the output end
Second gear + second gear: the long input shaft synchronizer moves leftwards, the coupling synchronizer moves leftwards, the direct gear synchronizer moves rightwards, and power is coupled at the input end
Second gear + third gear: the synchronizer of the short input shaft moves to the left, the synchronizer of the long input shaft moves to the left, the synchronizer of the direct gear moves to the right, the synchronizer of the output shaft moves to the right, and power is coupled at the output end
Third gear + third gear: the synchronizer of the short input shaft moves leftwards, the synchronizer of the coupling gear moves leftwards, the synchronizer of the output shaft moves rightwards, and power is coupled at the input end
Third gear and fourth gear: the synchronizer of the short input shaft moves to the left, the synchronizer of the long input shaft moves to the right, the synchronizer of the direct gear moves to the right, the synchronizer of the output shaft moves to the right, and power is coupled at the output end
Fourth gear + fourth gear: the long input shaft synchronizer moves right, the coupling synchronizer moves left, the direct gear synchronizer moves right, and power is coupled at the input end
Fourth gear + fifth gear: the short input shaft synchronizer moves to the right, the long input shaft synchronizer moves to the right, the direct gear synchronizer moves to the right, the output shaft synchronizer moves to the left, and power is coupled at the output end
Fifth gear + fifth gear: the synchronizer of the short input shaft moves to the right, the synchronizer of the coupling gear moves to the left, the synchronizer of the output shaft moves to the left, and power is coupled at the input end
Fifth gear + sixth gear: the short input shaft synchronizer moves to the right, the long input shaft synchronizer moves to the left, the direct gear synchronizer moves to the left, the output shaft synchronizer moves to the left, and power is coupled at the output end
Six keeps off + six keeps off: the long input shaft synchronizer moves leftwards, the coupling synchronizer moves leftwards, the direct gear synchronizer moves leftwards, and power is coupled at the input end
Sixth gear + seventh gear: the synchronizer of the short input shaft moves to the left, the synchronizer of the long input shaft moves to the left, the synchronizer of the direct gear moves to the left, the synchronizer of the output shaft moves to the left, and power is coupled at the output end
Seventh gear + seventh gear: the synchronizer of the short input shaft moves leftwards, the synchronizer of the coupling gear moves leftwards, the synchronizer of the output shaft moves rightwards, and power is coupled at the input end
Seventh gear + eighth gear: the synchronizer of the short input shaft moves to the left, the synchronizer of the long input shaft moves to the right, the synchronizer of the direct gear moves to the left, the synchronizer of the output shaft moves to the left, and power is coupled at the output end
Eight keep off + eight keep off: the long input shaft synchronizer moves to the right, the coupling synchronizer moves to the left, the direct gear synchronizer moves to the left, and power is coupled at the input end
The reverse gear is realized by adopting input reverse rotation.
In the actual use process, the working mode can be selected preferentially according to the actual working condition.
After the technical scheme is adopted, eight gears are realized by seven groups of gears, each input shaft can work independently and also can work in a matched mode, and power is not interrupted when the input shafts work in a matched mode. Two input powers can be in power coupling at the input end or the output end, so that the power output is increased; under the condition that the two input shafts are matched to work, gear shifting power can be uninterrupted, power coupling can be performed, and torque is increased; seven pairs of gears are used for realizing 8 double-input gears, the axial size is greatly reduced, the weight is reduced, the cost is reduced, and the specific power is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. An eight speed dual input transmission, comprising:
a long input shaft;
a short input shaft,
An output shaft;
a long intermediate shaft;
a short intermediate shaft;
the long input shaft penetrates through the central avoidance hole of the short input shaft and is convex back and arranged towards the output shaft, the output shaft and the long input shaft are coaxially arranged, the front end of the output shaft is sleeved with a direct gear synchronizer, and a second-fourth gear, a fifth-seventh gear, an output shaft synchronizer and a third-gear are sequentially arranged behind the direct gear synchronizer of the output shaft;
the rear convex part of the long input shaft is sequentially provided with a coupling synchronizer, a long input shaft low-gear, a long input shaft synchronizer and a long input shaft high-gear;
the short input shaft is positioned in the gearbox, a short input shaft high-gear, a short input shaft synchronizer and a short input shaft low-gear are sequentially arranged in the axial direction, and the axial tail end of the short input shaft is provided with a meshing connection structure corresponding to the front part of the coupling synchronizer;
the short intermediate shaft is arranged at the axial position from the long input shaft low-gear to the second-fourth-gear, the short intermediate shaft low-gear, the short intermediate shaft high-gear and the short intermediate shaft second-fourth-gear are sequentially arranged in the axial direction of the short intermediate shaft, the short intermediate shaft low-gear is meshed with the long input shaft low-gear, the short intermediate shaft high-gear is meshed with the long input shaft high-gear, and the short intermediate shaft second-fourth-gear is meshed with the second-fourth-gear;
the long intermediate shaft is provided with a long intermediate shaft high-gear, a long intermediate shaft low-gear, a long intermediate shaft five-seven-gear and a long intermediate shaft one-three-gear, the long intermediate shaft high-gear is meshed and connected with a short input shaft high-gear, the long intermediate shaft low-gear is meshed and connected with a short input shaft low-gear, the long intermediate shaft five-seven-gear is meshed and connected with a five-seven-gear, and the long intermediate shaft one-three-gear is meshed and connected with a three-gear;
the rear end of the output shaft axially protrudes out of the gearbox and is used for connecting an output part;
the front end input parts of the long input shaft and the short input shaft respectively protrude out of the gearbox shell and are used for being connected with corresponding power input parts.
2. An eight speed dual input transmission as defined in claim 1 wherein: the long middle shaft penetrates through the center avoidance hole of the short middle shaft, two ends of the long middle shaft are respectively arranged in a convex mode, and the long middle shaft is parallel to the output shaft.
3. An eight speed dual input transmission as defined in claim 1 wherein: the long middle shaft and the short middle shaft are arranged in different shafts and are respectively parallel to the output shaft.
4. An eight speed dual input transmission as defined in claim 1 wherein: the two ends of the long middle shaft in the length direction are respectively positioned and arranged through a long middle shaft front bearing and a long middle shaft rear bearing.
5. An eight speed dual input transmission as defined in claim 1 wherein: and the two ends of the short middle shaft in the length direction are respectively positioned and arranged through a short middle shaft front bearing and a short middle shaft rear bearing.
6. An eight speed dual input transmission as defined in claim 1 wherein: and two ends of the output shaft in the length direction are positioned and arranged through an output shaft head bearing and an output shaft bearing respectively.
7. An eight speed dual input transmission as defined in claim 6 wherein: an inner concave hole groove is formed in the rear end of the long input shaft in the axial direction, and the front end of the output shaft is positioned in the inner concave hole groove through a shaft head bearing of the output shaft.
8. An eight speed dual input transmission as defined in claim 1 wherein: the long input shaft is arranged in a bearing support manner through at least one group of long input shaft in the length direction.
9. An eight speed dual input transmission as defined in claim 1 wherein: the short input shaft is supported and arranged through at least one group of short input shaft bearings in the length direction.
10. An eight speed dual input transmission as defined in claim 2 wherein: the long middle shaft penetrates through the center avoiding hole of the short middle shaft, two ends of the long middle shaft are respectively arranged in a protruding mode to form a middle shaft assembly, and the middle shaft assemblies are evenly distributed around the periphery of the output shaft.
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| CN113483065B (en) | 2024-05-28 |
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