CN113483065B - Eight-gear double-input gearbox - Google Patents
Eight-gear double-input gearbox Download PDFInfo
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- CN113483065B CN113483065B CN202110943115.4A CN202110943115A CN113483065B CN 113483065 B CN113483065 B CN 113483065B CN 202110943115 A CN202110943115 A CN 202110943115A CN 113483065 B CN113483065 B CN 113483065B
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- short
- input shaft
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- 230000008878 coupling Effects 0.000 claims abstract description 36
- 238000010168 coupling process Methods 0.000 claims abstract description 36
- 238000005859 coupling reaction Methods 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000009977 dual effect Effects 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000004323 axial length Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Classifications
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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 completes eight-gear output through seven pairs of gears, reduces the axial length of the gearbox and meets the applicable requirements of a car body. The long input shaft penetrates through the center avoidance hole of the short input shaft, is backwards convex and is arranged towards the output shaft, the output shaft and the long input shaft are coaxially arranged, a direct gear synchronizer is sleeved at the front end of the output shaft, and a second-fourth gear, a fifth-seventh gear, the output shaft synchronizer and a first-third gear are sequentially arranged behind the direct gear synchronizer of the output shaft; a coupling synchronizer, a long input shaft low gear, a long input shaft synchronizer and a long input shaft high gear are sequentially arranged on the backward convex part of the long input shaft; the short input shaft is arranged in the gearbox in an axial direction, a short input shaft high gear, a short input shaft synchronizer and a short input shaft low gear are sequentially arranged in the gearbox, and an engagement 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 achieved through arranging corresponding synchronizers on the intermediate shaft and the output shaft, a pair of output gears are needed for the output of each gear, the axial length of the gearbox is relatively long, and a new gearbox structure is needed urgently 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 completes eight-gear output through seven pairs of gears, reduces the axial length of the gearbox and meets the applicable requirements of a car 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 center avoidance hole of the short input shaft, protrudes backwards and is arranged towards the output shaft, the output shaft and the long input shaft are coaxially arranged, a direct gear synchronizer is sleeved at the front end of the output shaft, 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 axially positioned in the gearbox and is sequentially provided with a short input shaft high gear, a short input shaft synchronizer and a short input shaft low gear, 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, a short intermediate shaft low gear, a short intermediate shaft high gear and a 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-speed gear, a long intermediate shaft low-speed gear, a long intermediate shaft five-seven-speed gear and a long intermediate shaft one-three-speed gear, the long intermediate shaft high-speed gear is in meshed connection with a short input shaft high-speed gear, the long intermediate shaft low-speed gear is in meshed connection with a short input shaft low-speed gear, the long intermediate shaft five-seven-speed gear is in meshed connection with a five-seven-speed gear, and the long intermediate shaft one-three-speed gear is in meshed connection with a three-speed gear;
The axial rear end of the output shaft protrudes outwards from 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 are respectively protruded outside the gearbox shell and are used for being connected with the corresponding power input parts.
It is further characterized in that:
the long intermediate shaft penetrates through the center avoidance hole of the short intermediate shaft, two ends of the long intermediate shaft are respectively arranged in a laterally protruding mode, and the long intermediate shaft is parallel to the output shaft;
the long intermediate shaft penetrates through the center avoidance hole of the short intermediate shaft, two ends of the long intermediate shaft are respectively arranged in a laterally protruding mode to form intermediate shaft assemblies, and a plurality of sets of intermediate shaft assemblies are uniformly distributed in a ring mode relative to 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 around the outer circumference of the output shaft to form a three intermediate shaft structure;
The long intermediate shaft and the short intermediate shaft are not coaxially arranged, and are respectively arranged in parallel with the output shaft;
the two ends of the long intermediate shaft in the length direction are respectively positioned and arranged through a long intermediate shaft front bearing and a long intermediate shaft rear bearing;
the two ends of the short intermediate shaft in the length direction are respectively positioned and arranged through a short intermediate shaft front bearing and a short intermediate shaft rear bearing;
The two ends of the length direction of the output shaft are respectively positioned and arranged through an output shaft head bearing and an output shaft bearing;
The front end of the output shaft is positioned and arranged in the concave hole groove through an output shaft head bearing, 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 in its length direction by at least one set of short input shaft bearings.
After the technical scheme is adopted, the corresponding synchronizers for gear shifting are arranged on the two coaxially arranged input shafts, so that gear shifting is not limited to be carried out on the intermediate shaft or the output shaft, eight gears are realized by seven groups of gears, each input shaft can work independently or can work cooperatively, and power is not interrupted when the input shafts work cooperatively. The two input powers can be power-coupled at the input end or the output end, so that the power output is increased; the eight-gear output is completed through seven pairs of gears, so that the axial length of the gearbox is reduced, and the applicable requirement of a vehicle body is met.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
The names corresponding to the serial numbers in the figures 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 spindle nose bearing 12, a direct gear synchronizer 13, a two-four gear 14, a five-seven gear 15, an output shaft synchronizer 16, a three 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 two-four gear 28, a short intermediate shaft rear bearing 29, a long intermediate shaft five-seven gear 30, a long intermediate shaft one-three gear 31, a long intermediate shaft rear bearing 32, a meshing connection 33, and a concave hole 34.
Detailed Description
An eight speed dual input gearbox, see fig. 1 and 2, comprising a long input shaft 1, a short input shaft 2, an output shaft 19, a long intermediate shaft 22, a short intermediate shaft 26;
The long input shaft 1 penetrates through the center avoidance hole of the short input shaft 2, is backwards convex 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 first-third gear 17 are sequentially arranged behind the direct gear synchronizer 13 of the output shaft 19;
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 are sequentially arranged on the backward convex part of the long input shaft 1;
A short input shaft high gear 4, a short input shaft synchronizer 5 and a short input shaft low gear 6 are sequentially arranged in the gearbox along the axial direction of the short input shaft 2, and an engagement connection structure 33 is arranged at the axial tail end of the short input shaft 2 corresponding to the front part of the coupling synchronizer;
The short intermediate shaft 26 is arranged at the axial position 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 meshed with the long input shaft low gear 9, the short intermediate shaft high gear 27 is meshed with the long input shaft high gear 11, and the short intermediate shaft second fourth gear 28 is 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 in meshed connection with the short input shaft high gear 4, the long intermediate shaft low gear 23 is in meshed connection with the short input shaft low gear 6, the long intermediate shaft five-seven gear 30 is in meshed connection with the five-seven gear 15, and the long intermediate shaft one-three gear 31 is in meshed connection with the one-three gear 17;
the axial rear end of the output shaft 19 protrudes outside the gearbox and is used for connecting an output part;
the front end input parts of the long input shaft 1 and the short input shaft 2 are respectively protruded outside the gearbox shell and are used for connecting the 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 a long intermediate shaft front bearing 20 and a long intermediate shaft rear bearing 32;
the two ends of the short intermediate shaft 26 in the length direction are respectively positioned and arranged through a short intermediate shaft front bearing 24 and a short intermediate 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 axial rear end of the long input shaft 1 is provided with a concave hole groove 34, and the front end of the output shaft 19 is positioned and arranged in the concave hole groove 34 through the shaft head bearing 12 of the output shaft, so that the structure is simple;
The long input shaft 1 is supported in its length direction by at least one set of long input shaft bearings 8;
the short input shaft 2 is supported in its length direction by at least one set of short input shaft bearings 3.
First embodiment, see fig. 1: the long intermediate shaft 22 penetrates through the center avoidance hole of the short intermediate shaft 26, and two ends of the long intermediate shaft 22 are respectively arranged laterally convexly to realize coaxial input, and the long intermediate shaft 22 is arranged parallel to the output shaft 19. In the structure, a whole set of intermediate shafts can be used, two sets of intermediate shafts can be arranged 180 degrees relative to the output shaft to form a double intermediate shaft structure, and three sets of intermediate shafts are uniformly arranged relative to the circumference of the output shaft to form a three intermediate shaft structure, so that the strength of the gear shaft is improved, and the transmission torque is increased.
In a second embodiment, see fig. 2: the long intermediate shaft 22 and the short intermediate shaft 26 are not coaxially arranged, and the long intermediate shaft 22 and the short intermediate shaft 26 are respectively arranged parallel to the output shaft 26, which allows the housing of the transmission to be arranged in a shape suitable for the vehicle body space as required.
The specific implementation method comprises the following steps: the front end of the long input shaft 1 is connected with an external power element through a spline to carry out power input, the long input shaft passes through the middle of a hollow shaft of the short input shaft 2, 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 an empty 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 an external shell through a long input shaft bearing 8, so that 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, a short input shaft low-gear 6 and a 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, and therefore power transmission is carried out. The short input shaft 2 is connected with an external shell through a short input shaft bearing 3, so that 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 and fourth gear 14, the fifth and seventh gear 15 and the third gear 17 are sleeved on the output shaft 19. The direct gear synchronizer 13 can slide leftwards and rightwards 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 and fourth gear 14, so as to transmit power; the output shaft synchronizer 16 can slide leftwards and rightwards on the output shaft to respectively realize the combination of the output shaft 19 and the five-seven gear 15 and the combination of the output shaft 19 and the three-gear 17, so as to transmit power. 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 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 any power input condition, and can work under the condition that two power inputs are matched.
Under the condition of single power input, a long input shaft is used as single power input, and the transmission paths of the gears are as follows:
a first gear: the short input shaft synchronizer moves right, the coupling synchronizer moves left, and the output shaft synchronizer moves right
The power element, the long input shaft, the coupling synchronizer, the short input shaft synchronizer, the short input shaft low gear, the long intermediate shaft one three gear, the one three gear, the output shaft synchronizer and the output shaft;
Second gear: the long input shaft synchronizer moves left and the direct gear synchronizer moves right
The power element, the long input shaft synchronizer, the long input shaft low gear, the short intermediate shaft second four-gear, the direct gear synchronizer and the output shaft;
Three gears: the short input shaft synchronizer moves left, the coupling gear synchronizer moves left, and the output shaft synchronizer moves right
The power element, the long input shaft, the coupling synchronizer, the short input shaft synchronizer, the short input shaft high gear, the long intermediate shaft one three-gear, the output shaft synchronizer and the output shaft;
Fourth gear: right shift of long input shaft synchronizer and right shift of direct gear synchronizer
The power element, the long input shaft synchronizer, the long input shaft high gear, the short intermediate shaft second four-gear, the direct gear synchronizer and the output shaft;
Five gears: the short input shaft synchronizer moves right, the coupling synchronizer moves left, and the output shaft synchronizer moves left
The power element, the long input shaft, the coupling synchronizer, the short input shaft synchronizer, the short input shaft low gear, the long intermediate shaft five-seven gear, the output shaft synchronizer and the output shaft;
Six gears: left shift of long input shaft synchronizer and left shift of direct gear synchronizer
The power element, the long input shaft synchronizer, the long input shaft low gear, the short intermediate shaft high gear, the long input shaft high gear, the direct gear synchronizer and the output shaft;
seven gears: left shift of short input shaft synchronizer, left shift of coupling synchronizer, left shift of output shaft synchronizer
The power element, the long input shaft, the coupling synchronizer, the short input shaft synchronizer, the short input shaft high gear, the long intermediate shaft five-seven gear, the output shaft synchronizer and the output shaft;
eight gears: the long input shaft synchronizer moves right and the direct gear synchronizer moves left
Power element, long input shaft synchronizer, long input shaft high gear, direct gear synchronizer and output shaft.
Under the condition of single power input, a short input shaft is used as single power input, and the transmission paths of the gears are as follows:
A first gear: the synchronizer of the short input shaft moves right and the synchronizer of the output shaft moves right
The power element, the short input shaft synchronizer, the short input shaft low gear, the long intermediate shaft one three gear, the output shaft synchronizer and the output shaft;
second gear: the long input shaft synchronizer moves left, the coupling synchronizer moves left, and the direct gear synchronizer moves right
The power element, the short input shaft, the coupling synchronizer, the long input shaft synchronizer, the long input shaft low gear, the short intermediate shaft second and fourth gear, the direct gear synchronizer and the output shaft;
Three gears: the short input shaft synchronizer moves left and the output shaft synchronizer moves right
The power element, the short input shaft synchronizer, the short input shaft high gear, the long intermediate shaft one three-gear, the one three-gear, the output shaft synchronizer and the output shaft;
Fourth gear: the long input shaft synchronizer moves right, the coupling synchronizer moves left, and the direct gear synchronizer moves right
The power element, the short input shaft, the coupling synchronizer, the long input shaft synchronizer, the long input shaft high gear, the short intermediate shaft second and fourth gear, the direct gear synchronizer and the output shaft;
Five gears: the synchronizer of the short input shaft moves right and the synchronizer of the output shaft moves left
The power element, the short input shaft synchronizer, the short input shaft low gear, the long intermediate shaft five-seven gear, the output shaft synchronizer and the output shaft;
six gears: left shift of long input shaft synchronizer, left shift of coupling synchronizer, left shift of direct gear synchronizer
The power element, the short input shaft, the coupling synchronizer, the long input shaft synchronizer, the long input shaft low gear, the short intermediate shaft high gear, the long input shaft high gear, the direct gear synchronizer and the output shaft;
seven gears: left shift of short input shaft synchronizer and left shift of output shaft synchronizer
The power element, the short input shaft synchronizer, the short input shaft high gear, the long intermediate shaft five-seven gear, the output shaft synchronizer and the output shaft;
eight gears: the long input shaft synchronizer moves right, the coupling synchronizer moves left, and the direct gear synchronizer moves left
Power element, short input shaft, coupling synchronizer, long input shaft synchronizer, long input shaft high gear, direct gear synchronizer and output shaft.
Under the condition of matching the two power inputs, the transmission paths of the gears are as follows:
First gear + first gear: the synchronizer of the short input shaft moves right, the synchronizer of the coupling moves left, the synchronizer of the output shaft moves right, and the power is coupled at the input end
First gear + second gear: the short input shaft synchronizer moves right, the long input shaft synchronizer moves left, the direct gear synchronizer moves right, the output shaft synchronizer moves right, and power is coupled at the output end
Second gear + second gear: the long input shaft synchronizer moves left, the coupling synchronizer moves left, the direct gear synchronizer moves right, and power is coupled at the input end
Second gear + third gear: the short input shaft synchronizer moves left, the long input shaft synchronizer moves left, the direct gear synchronizer moves right, the output shaft synchronizer moves right, and power is coupled at the output end
Third gear + third gear: the short input shaft synchronizer moves left, the coupling gear synchronizer moves left, the output shaft synchronizer moves right, and power is coupled at the input end
Third gear + fourth gear: the short input shaft synchronizer moves left, the long input shaft synchronizer moves right, the direct gear synchronizer moves right, the output shaft synchronizer moves 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 right, the long input shaft synchronizer moves right, the direct gear synchronizer moves right, the output shaft synchronizer moves left, and power is coupled at the output end
Fifth gear + fifth gear: the short input shaft synchronizer moves right, the coupling gear synchronizer moves left, the output shaft synchronizer moves left, and power is coupled at the input end
Fifth gear + sixth gear: the short input shaft synchronizer moves right, the long input shaft synchronizer moves left, the direct gear synchronizer moves left, the output shaft synchronizer moves left, and power is coupled at the output end
Six gear + six gear: the long input shaft synchronizer moves left, the coupling synchronizer moves left, the direct gear synchronizer moves left, and power is coupled at the input end
Six-gear + seven-gear: the short input shaft synchronizer moves left, the long input shaft synchronizer moves left, the direct gear synchronizer moves left, the output shaft synchronizer moves left, and power is coupled at the output end
Seven gear + seven gear: the short input shaft synchronizer moves left, the coupling gear synchronizer moves left, the output shaft synchronizer moves right, and power is coupled at the input end
Seven gear + eight gear: the short input shaft synchronizer moves left, the long input shaft synchronizer moves right, the direct gear synchronizer moves left, the output shaft synchronizer moves left, and power is coupled at the output end
Eight + eight: the long input shaft synchronizer moves right, the coupling synchronizer moves left, the direct gear synchronizer moves left, and power is coupled at the input end
The reverse gear is realized by adopting input inversion.
In the actual use process, the working mode can be preferentially selected 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 or can work cooperatively, and power is not interrupted when the input shafts work cooperatively. The two input powers can be power-coupled 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, gear shifting power is not interrupted, power coupling can be performed, and torque is increased; seven pairs of gears are used for realizing 8 gears with double input, 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 characteristics 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 disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to 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 center avoidance hole of the short input shaft, protrudes backwards and is arranged towards the output shaft, the output shaft and the long input shaft are coaxially arranged, a direct gear synchronizer is sleeved at the front end of the output shaft, 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 axially positioned in the gearbox and is sequentially provided with a short input shaft high gear, a short input shaft synchronizer and a short input shaft low gear, 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, a short intermediate shaft low gear, a short intermediate shaft high gear and a 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-speed gear, a long intermediate shaft low-speed gear, a long intermediate shaft five-seven-speed gear and a long intermediate shaft one-three-speed gear, the long intermediate shaft high-speed gear is in meshed connection with a short input shaft high-speed gear, the long intermediate shaft low-speed gear is in meshed connection with a short input shaft low-speed gear, the long intermediate shaft five-seven-speed gear is in meshed connection with a five-seven-speed gear, and the long intermediate shaft one-three-speed gear is in meshed connection with a three-speed gear;
The axial rear end of the output shaft protrudes outwards from 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 are respectively protruded outside the gearbox shell and are used for being connected with the corresponding power input parts.
2. An eight speed dual input transmission as defined in claim 1 wherein: the long intermediate shaft penetrates through the center avoidance hole of the short intermediate shaft, two ends of the long intermediate shaft are respectively arranged in a laterally protruding mode, and the long intermediate shaft is parallel to the output shaft.
3. An eight speed dual input transmission as defined in claim 1 wherein: the long intermediate shaft and the short intermediate shaft are not coaxially arranged, and the long intermediate shaft and the short intermediate shaft are respectively arranged in parallel with the output shaft.
4. An eight speed dual input transmission as defined in claim 1 wherein: and two ends of the long intermediate shaft in the length direction are respectively positioned and arranged through a long intermediate shaft front bearing and a long intermediate shaft rear bearing.
5. An eight speed dual input transmission as defined in claim 1 wherein: and two ends of the short intermediate shaft in the length direction are respectively positioned and arranged through a short intermediate shaft front bearing and a short intermediate 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 respectively positioned and arranged through the shaft head bearing of the output shaft and the bearing of the output shaft.
7. An eight speed dual input transmission as defined in claim 6 wherein: the axial rear end of the long input shaft is provided with a concave hole groove, and the front end of the output shaft is positioned and arranged in the concave hole groove through an output shaft head bearing.
8. An eight speed dual input transmission as defined in claim 1 wherein: the long input shaft is supported in its lengthwise direction by at least one set of long input shaft bearings.
9. An eight speed dual input transmission as defined in claim 1 wherein: the short input shaft is supported in its length direction by at least one set of short input shaft bearings.
10. An eight speed dual input transmission as defined in claim 2 wherein: the long intermediate shaft penetrates through the center avoidance hole of the short intermediate shaft, two ends of the long intermediate shaft are respectively arranged in a laterally protruding mode to form intermediate shaft assemblies, and a plurality of intermediate shaft assemblies are uniformly distributed in a ring mode relative to the periphery of the output shaft.
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