CN105697739A - Six-gear single-middle-shaft transmission - Google Patents
Six-gear single-middle-shaft transmission Download PDFInfo
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- CN105697739A CN105697739A CN201610183633.XA CN201610183633A CN105697739A CN 105697739 A CN105697739 A CN 105697739A CN 201610183633 A CN201610183633 A CN 201610183633A CN 105697739 A CN105697739 A CN 105697739A
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- shifting block
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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
- 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
- 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
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/12—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
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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
- F16H63/32—Gear shift yokes, e.g. shift forks
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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
- F16H2306/00—Shifting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention relates to a six-gear single-middle-shaft transmission. The six-gear single-middle-shaft transmission comprises a middle shaft and an input shaft integrated with an input gear. The input gear is constantly meshed with a middle shaft transmission gear mounted at the front end of the middle shaft, a main shaft is mounted above the middle shaft, a middle shaft gear on the middle shaft is constantly meshed with a main shaft gear on the main shaft, and the rear end of the main shaft is connected with an output flange disc; the main shaft gear comprises a first-gear gear, a second-gear gear, a third-gear gear, a fourth-gear gear, a fifth-gear gear, a sixth-gear gear and a reverse-gear gear, and synchronizers are mounted between the first-gear gear and the second-gear gear, between the third-gear gear and the fourth-gear gear, and between the fifth-gear gear and the sixth-gear gear; gear shifting forks are arranged on synchronizer sliding sleeves on the synchronizers and a reverse-gear sliding sleeve on the reverse-gear gear in a straddling manner; a pull plate is clamped to the upper ends of the gear shifting forks and is connected with a control mechanism; and the pull plate is mounted on a shell through a supporting structure. The pull plate connected with the control structure is arranged to form a pull plate type control execution mechanism, the gear shifting performance is good, shell casting difficulties and the casting failure ratio are reduced, and meanwhile the boundary dimension is reduced.
Description
[technical field]
The present invention relates to variator field, be specifically related to a kind of six grades of single countershaft transmissions。
[background technology]
The arrangement form of variator axle generally has two-axis and triple axle two kinds, and the automobile of usual rear wheel drive can adopt three-axle speed variator, i.e. power shaft, output shaft and jackshaft。Power shaft front end borrows clutch and electromotor to be connected, output shaft rear end is connected by flange and universal driving device, power shaft and output shaft are placed on same horizontal line, and jackshaft is then arranged in parallel with them, and power reaches output shaft from power shaft through jackshaft by gear again。
High-end light Medium Truck and bus market are based on five grades or six grades of single countershaft transmissions both at home and abroad at present, and the single countershaft transmission overall dimensions of tradition is big, and weight is big, and bearing capacity is low, noise is high, gear shift is heavy。Do not adapt to the feature of nowadays high-end light Medium Truck and passenger vehicle requirement matched well performance, high economy and outstanding ride comfort。
[summary of the invention]
It is an object of the invention to overcome problems of the prior art, it is provided that a kind of six grades of single countershaft transmissions, bearing capacity is strong, and overall dimensions is little, and shift property is good。
In order to achieve the above object, the present invention adopts the following technical scheme that
Including housing, the procapsid that housing includes being connected is cavity with back casing and inside, in this cavity, it is provided with jackshaft and is integrated with the power shaft of input gear, input gear often engages with the jackshaft travelling gear being arranged on jackshaft front end, jackshaft be arranged above main shaft, and the countershaft-gear on jackshaft often engages with the mainshaft gear on main shaft respectively, and rear-end of spindle connects output flange；
Mainshaft gear includes one grade of gear and is respectively arranged with lock unit between gear and six shift of gears to six shift of gears and back gear, one grade of gear and intermediate gear, third gear and fourth gear and five grades；Lock unit is connected with main shaft by spline and can slidably reciprocate along the axis direction of main shaft；Lock unit connects lock unit sliding sleeve by spline, and back gear connects reverse gear sliding sleeve by spline, lock unit sliding sleeve and all ride on reverse gear sliding sleeve and be provided with selector fork, and the upper end of selector fork is clamping arm-tie respectively, and arm-tie connects operating mechanism；Arm-tie is arranged on housing by supporting construction。
Further, lock unit all adopts lock ring type lock unit, and extension shelves stroke is 8.5mm。
Further, operating mechanism includes the horizontal shift bar that is connected with driver's cabin shift bar and can rotate；Horizontal shift bar connects gear shift shifting block, and gear shift shifting block connects gear selecting shifting block and arm-tie。
Further, gear shift shifting block includes the shifting block body containing internal splined hole, and in the outside of internal splined hole, the bottom of shifting block body is provided with the shifting block for matching with arm-tie, the side of shifting block body is provided with the first arc surface, and the first arc surface is provided with several V-arrangement gear selection position instruction groove；The opposite side of shifting block body is provided with V-arrangement neutral switch and starts groove and M shape shift pattern instruction groove, and V-arrangement neutral switch starts groove and M shape shift pattern indicates and is provided with rectangle undercut between groove。
Further, the side of the first arc surface, shifting block body are additionally provided with the first ladder arc surface and the second ladder arc surface；And first the radius of ladder arc surface less than the radius of the second ladder arc surface, be provided with reverse gear between the two and hang shelves protection inclined-plane；Reverse gear gear selecting protection inclined-plane it is provided with between V-arrangement gear selection position instruction groove and the first ladder arc surface and the second ladder arc surface。
Further, the middle part of shifting block body is additionally provided with the second arc surface for limiting interlocking block position, and shifting block body is provided with the three-arc face being positioned on the downside of internal splined hole；Three-arc face is relative with the second arc surface, forms gear selecting groove。
Further, the first arm-tie that supporting construction includes by several screws are connected with procapsid props up bracer；First arm-tie props up bracer and is internally provided with groove, and arm-tie is respectively positioned in groove and can slide in groove；Procapsid is provided with several for the first arm-tie is propped up the alignment pin that bracer positions。
Further, the second arm-tie that supporting construction also includes being arranged on back casing props up bracer, arm-tie includes reverse gear arm-tie that front end flushes, one or two grades of arm-ties, three fourth gear arm-ties and five or six grades of arm-ties, wherein, reverse gear arm-tie and one or two grades of arm-ties are longer than three fourth gear arm-ties and five or six grades of arm-ties, and the rear end of reverse gear arm-tie and one or two grades of arm-ties is installed in the second arm-tie and props up on bracer。
Further, the first arm-tie props up bracer and includes two relative horizontally U-shaped framves and two vertical and parallel Y type frame, and wherein the upper end of each Y type frame connects the downside of two U-shaped framves respectively, and the bottom of two Y type frame is connected by crossbeam, forms groove。
Further, the front end of power shaft is supported on procapsid by deep groove ball bearing, and front-end of spindle by being supported on the rear end of power shaft without outer ring cylinder roller bearing, and rear-end of spindle is supported on back casing by deep groove ball bearing；Jackshaft front-end and back-end are supported on procapsid and back casing respectively through taper roll bearing；Back gear and mainshaft gear are supported on main shaft by needle bearing。
Compared with prior art, the present invention has following useful technique effect:
By the power of electromotor to be passed to the power shaft of variator by clutch in the present invention, owing to input gear often engages with jackshaft travelling gear, countershaft-gear often engages with mainshaft gear, carries out transmission by jackshaft, and power is exported by output flange by main shaft。By arranging the arm-tie being connected with handle structure in the present invention, forming drawplate type and handle actuator, shift property is good；By adopting drawplate type to handle the selector fork with high rigid structure and rational arm-tie supporting form, do not need deliberately to add casting attachment structure, reduce shell cast difficulty and casting flaw incidence rate, reduce mechanical loss to greatest extent, thus ensureing low berth-changing strength；Meanwhile, overall dimensions reduces, and the axial length of the present invention is 710mm, and centre-to-centre spacing is only 118mm, and input torque is up to 600～700Nm, is beneficial to arrangement。
Further, the present invention is by adopting the short stroke synchronizer of 8.5mm, it is ensured that low berth-changing strength。
Further; the present invention integrates, by adopting, the gear shift shifting block selecting the functions such as shift pattern instruction, reverse gear position instruction, neutral switch, self-locking, reverse gear protection; operating mechanism is of compact construction and the instruction of good position; take up room little and there is good maneuvering performance, being particularly suitable for when operating mechanism arrangement space is limited and apply。
[accompanying drawing explanation]
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation at the selector fork place of the present invention；
Fig. 3 is the structural representation of the operating mechanism of the present invention；
Fig. 4 is the structural representation at gear shift shifting block place of the present invention；
Fig. 5 is the perspective view of gear shift shifting block front left side；
Fig. 6 is the perspective view of gear shift shifting block forward right side；
Fig. 7 is the upward view of gear shift shifting block；
Fig. 8 is the left view of gear shift shifting block；
Fig. 9 is the rearview of gear shift shifting block；
Figure 10 is the schematic diagram of supporting construction of the present invention；
Figure 11 is the partial front elevation view of supporting construction；
Figure 12 is the partial side view of supporting construction；
Figure 13 is the structural representation that the first arm-tie props up bracer；
Figure 14 is the top view of Figure 13。
Wherein, 1-power shaft；2-procapsid；3-is without outer ring cylinder roller bearing；4-arm-tie；5-the first arm-tie props up bracer；6-needle bearing；7-mainshaft gear；8-main shaft；9-lock unit；10-back gear；11-reverse gear sliding sleeve；12-back casing；13-the second arm-tie props up bracer；14-output flange；15-jackshaft travelling gear；16-countershaft-gear；17-jackshaft；18-fulcrum post；19-gear shift loose piece；20-selector fork；21-transverse direction shift bar；22-gear shift shifting block；23-gear selecting shifting block；24-operating mechanism；25-gear selection position instruction spring；26-the first steel ball；27-shift pattern instruction spring；28-the second steel ball；29-neutral switch pin；30-alignment pin；31-screw；
2201-reverse gear hangs shelves protection inclined-plane；2202-shifting block；2203-M shape shift pattern instruction groove；2204-internal splined hole；2205-the second arc surface；2206-reverse gear gear selecting protection inclined-plane；2207-V shape gear selection position instruction groove；2208-rectangle undercut；2209-gear selecting groove；2210-V shape neutral switch starts groove；2211-the first arc surface；2212-the first ladder arc surface；2213-the second ladder arc surface。
401-reverse gear arm-tie；Mono-or two grades of arm-ties of 402-；403-tri-fourth gear arm-tie；Five or six grades of arm-ties of 404-；
501-the first screwed hole；502-the second screwed hole；503-pin-and-hole。
[detailed description of the invention]
Below in conjunction with accompanying drawing, the present invention is described in further details。
Referring to Fig. 1 and Fig. 2, case of transmission of the present invention includes the procapsid 2 and the back casing 12 two sections that are connected, for " cartridge type " structure；Case of transmission of the present invention and manipulation housing, rear bearing cover etc. all adopt aluminum alloy die-casting technological, it is ensured that gearbox weight is light。In the cavity that procapsid 2 and back casing 12 are formed, it is provided with jackshaft 17 and is integrated with the power shaft 1 of input gear, input gear often engages with the jackshaft travelling gear 15 being arranged on jackshaft 17 front end, jackshaft 17 be arranged above main shaft 8, and the countershaft-gear 16 on jackshaft 17 often engages with the mainshaft gear 7 on main shaft 8 respectively, all adopt interference to be connected between jackshaft travelling gear 15, countershaft-gear 16 and jackshaft 17, and adopt " hot charge practice " assembling；Main shaft 8 rear end connects output flange 14。
Mainshaft gear 7 includes from rear to the front back gear 10 sorted successively and one grade of gear to six shift of gears, one grade of gear is respectively arranged with lock unit 9 between six shift of gears, specifically one grade is provided with Double-conical-surface lock ring type lock unit between gear and intermediate gear, first single conical surface lock ring type lock unit it is provided with, five grades of second single conical surface lock ring type lock units between gear and six shift of gears between third gear and fourth gear；Lock unit 9 is connected with main shaft 8 by spline and can slidably reciprocate along the axis direction of main shaft 8；Lock unit 9 is provided with lock unit sliding sleeve, is connected for spline between lock unit sliding sleeve and the tooth hub of lock unit, thus being also connected for spline between lock unit sliding sleeve and the radial direction of main shaft 8；Back gear 10 is connected with reverse gear sliding sleeve 11 by spline, lock unit sliding sleeve and all ride above reverse gear sliding sleeve 11 and be provided with selector fork 20, and selector fork 20 is by fulcrum post 18 and procapsid 2 and back casing 12 pin joint；Selector fork 20 stirs lock unit sliding sleeve action by gear shift loose piece 19, and wherein gear shift loose piece 19 coordinates in the hole being supported on selector fork 20 by hole axle, rotatably；Transmission speed ratio and the adjustment of output power is realized by handling selector fork 20。The upper end of selector fork 20 is clamping arm-tie 4 respectively, and arm-tie 4 connects operating mechanism 24；Arm-tie 4 is arranged on above enclosure interior side by supporting construction。
Lock unit 9 all adopts lock ring type lock unit, and the short stroke synchronizer adopting extension shelves stroke to be 8.5mm ensures low berth-changing strength。
Referring to Fig. 3 and Fig. 4, operating mechanism 24 is side on procapsid 2 front portion, including the horizontal shift bar 21 being connected with driver's cabin shift bar and can rotate；Horizontal shift bar 21 connects gear shift shifting block 22 by spline, and gear shift shifting block 22 can transversely shift bar 21 be movable and follow horizontal shift bar 21 and rotate, and gear shift shifting block 22 completes gear selecting action when moving, complete gear shift action during rotation。Gear shift shifting block 22 connects gear selecting shifting block 23 and arm-tie 4。Gear selecting shifting block 23 can drive gear shift shifting block 22 to move to select different gear arm-tie in arm-tie 4, it is achieved one/bis-, three/tetra-, five/six, reverse gear gear selecting；Being driven gear shift shifting block 22 to rotate to promote arm-tie 4 to move by horizontal shift bar 21, arm-tie 4 drives selector fork 20 to move, and finally realizes gear shift。
Referring to Fig. 5 to Fig. 9, gear shift shifting block 22 includes the shifting block body containing internal splined hole 2204, and internal splined hole 10 is in order to be connected with horizontal shift bar 21；In the outside of internal splined hole 2204, the bottom of shifting block body is provided with the shifting block 2202 for matching with arm-tie 4, in order to drive arm-tie 4 to realize choosing, gear shift action；The side of shifting block body is provided with the first arc surface the 2211, first ladder arc surface 2212 and the second ladder arc surface 2213, in order to realize reverse gear defencive function；First arc surface 2211 is provided with several V-arrangement gear selection position instruction groove 2207, in order to provide gear selection position to indicate；The radius of the first ladder arc surface 2212, less than the radius of the second ladder arc surface 2213, is provided with reverse gear between the two and hangs shelves protection inclined-plane 2201；Reverse gear gear selecting protection inclined-plane 2206 it is provided with between V-arrangement gear selection position instruction groove 2207 and the first ladder arc surface 2212 and the second ladder arc surface 2213。
It is arranged side by side V-arrangement neutral switch before and after the opposite side of shifting block body and has started groove 2210 and M shape shift pattern instruction groove 2203, respectively in order to realize neutral gear deictic function and self-locking, shift pattern deictic function；It is that time processing shapes that V-arrangement neutral switch starts the " V " shape inclined-plane in the middle of groove 2210 and M shape shift pattern instruction groove 2203；V-arrangement neutral switch starts groove 2210 and M shape shift pattern indicates and is provided with rectangle undercut 2208 between groove 2203, is independent of each other when playing withdrawing effect, machning v grooves and M shape groove。
The middle part of shifting block body is additionally provided with the second arc surface 2205 for limiting interlocking block position, and shifting block body is provided with the three-arc face being positioned on the downside of internal splined hole 2204；Three-arc face is relative with the second arc surface 2205, forms gear selecting groove 2209。
Referring to Figure 10 to Figure 14, supporting construction includes propping up bracer 5 by the first arm-tie that four screws 31 are connected with procapsid 2, and by two alignment pins being arranged on procapsid 2 30, first arm-tie is propped up bracer 5 and position；First arm-tie props up bracer 5 and includes two relative horizontally U-shaped framves, and two vertical and parallel Y type frame, wherein the upper end of each Y type frame connects the downside of two U-shaped framves respectively, the bottom of two Y type frame is connected by crossbeam, form the groove of rectangle, arm-tie 4 is respectively positioned in groove and can slide in groove, and by the internal upper and lower surface of groove, namely arm-tie 4 is carried out spacing, guiding by the lower surface of U-shaped frame and the upper surface of crossbeam。
The second arm-tie that supporting construction also includes being arranged on back casing 12 props up bracer 13, arm-tie 4 includes the reverse gear arm-tie 401 that front end flushes, one or two grades of arm-ties 402, three fourth gear arm-ties 403 and five or six grades of arm-ties 404, wherein, reverse gear arm-tie 401 and one or two grades of arm-tie 402 to three fourth gear arm-ties 403 and five or six grades of arm-ties 404 are long, reverse gear arm-tie 401 and one or two grades of arm-ties 402 are long thin-wall part, in the fabrication process and can be deformed during stress, moving process easily produces hair fastener phenomenon, therefore the rear end of reverse gear arm-tie 401 and one or two grades of arm-ties 402 is arranged on the second arm-tie each through nylon support set by the present invention and props up on bracer 13, the two arm-tie can be eliminated by the elastic part of nylon support set and deform the adverse effect brought, make reverse gear arm-tie 401 and one or two grades of arm-tie 402 moving process smooth and easy on the one hand, significantly reduce deflection during arm-tie work stress, it is of value to raising speed-changer operation performance；Reduce reverse gear arm-tie 401 and the manufacture requirements of one or two grades of arm-ties 402, manufacturing cost on the other hand。401,1 grades of arm-tie 402, three fourth gear arm-ties 403 of reverse gear arm-tie and five or six grades of arm-ties 404 are separately provided for connecting the rectangular channel of shifting of transmission shifting block 22, and for connecting the manhole of corresponding selector fork 20。
It is integral type structure that first arm-tie props up the U-shaped frame in bracer 5, Y type frame and crossbeam；The U-shaped beam of each horizontally U-shaped frame all offers two the first screwed holes 501 for installing screw 31, offers the pin-and-hole 503 for installing alignment pin 30 in the middle of the first screwed hole 501, in order to be connected with procapsid 2；The centre of each Y type frame all offers second screwed hole 502, for assembly technology hole, each arm-tie is sequentially arranged and props up in the middle part rectangular through slot of bracer 5 at the first arm-tie, frock is propped up bracer 5 by the second screwed hole 502 with the first arm-tie and is connected, by frock, each arm-tie 4 is fixed on the first arm-tie and props up in bracer 5, assemble as little assembly entirety, and frock also can provide the assembling point of application, facilitating each arm-tie 4 to assemble, the first arm-tie removes frock after propping up bracer 5 installation。
The front end of power shaft 1 is supported on procapsid 2 by deep groove ball bearing, and main shaft 8 front end by being supported on the rear end of power shaft 1 without outer ring cylinder roller bearing 3, and main shaft 8 rear end is supported on back casing 12 by deep groove ball bearing；Jackshaft 17 front-end and back-end are supported on procapsid 2 and back casing 12 respectively through taper roll bearing；Back gear 10, mainshaft gear 7 are supported on main shaft 8 by needle bearing 6。
Specific works process of the present invention is as follows:
Engine power is transferred to transmission input shaft 1 by clutch。Input shaft gear often engages with jackshaft travelling gear 15, jackshaft travelling gear 15 is connected for interference with jackshaft 17, power is transferred to countershaft-gear 16 by jackshaft 17, countershaft-gear 16 often engages respectively with mainshaft gear 7, during neutral position, mainshaft gear 7 dallies on main shaft 8, being connected with main shaft 8 by a certain mainshaft gear 7 by spline by lock unit sliding sleeve when gear, power is by main shaft 8 transmission and is finally exported by output flange 14。
During gear selecting, gear selecting shifting block 23 drives the axis direction of gear shift shifting block 22 transversely shift bar 21 to move by gear selecting groove 2209, and the shifting block 2202 of gear shift shifting block 22 end moves to select different gear arm-tie 4 in the rectangular channel of arm-tie 4；V-arrangement gear selection position instruction inclined-plane, groove 2207 both sides compresses gear selection position instruction spring 25 by the first steel ball 26, indicates the position that spring 25 force variation is fed back to indicate gear selection position with gear selection position；When being elected to reverse gear, reverse gear gear selecting protection inclined-plane 2206 compresses gear selection position instruction spring 25 further by the first steel ball 26, makes to select reverse gear resistance more than all the other gears, thus realizing reverse gear gear selecting defencive function。
During gear shift, driver's cabin shift bar drives horizontal shift bar 21 to rotate by flexible axle or leverage, horizontal shift bar 21 drives gear shift shifting block 22 to rotate, the shifting block 2202 of gear shift shifting block 22 end promotes arm-tie 4 to move, arm-tie 4 drives selector fork 20 to move, selector fork 20 drives lock unit sliding sleeve along main shaft 8 direction synchronizing moving, and lock unit sliding sleeve is engaged with main shaft 8 by lock unit gear ring, namely realizes transmission speed ratio and the adjustment of output power。
In gearshift procedure, in M shape shift pattern instruction groove 2203, inclined-plane compresses shift pattern instruction spring 27 by the second steel ball 28, indicates spring 27 force variation to realize shift pattern instruction with shift pattern；V-arrangement neutral switch starts inclined-plane, groove 2210 both sides and drives neutral switch pin 29 to move to control neutral switch contact break-make, it is achieved neutral gear deictic function；When hanging reverse gear, reverse gear is hung shelves protection inclined-plane 2201 and is compressed gear selection position instruction spring 25 further by the first steel ball 26, makes extension reverse gear resistance more than all the other gears, thus realizing reverse gear to hang shelves defencive function。Neutral gear or when shelves, indicates spring 27 precompression to be pressed in by the second steel ball 28 on M shape shift pattern instruction groove 2203 inclined-plane by shift pattern, thus realizing auto-lock function。It is neutral position when the second steel ball 28 is in M shape middle bevels, when the second steel ball 28 is in M shape inclined-plane, both sides in file location。
The present invention is by measures such as all aluminium alloy housing, high class gear, brand-new operating mechanisms, it is provided that six grades of single countershaft transmissions that a kind of bearing capacity is strong, overall dimensions is little, lightweight, noise is low, shift property is good, and concrete advantage is as follows:
1, in the present invention, all gears all adopt high accuracy helical gear, it is ensured that variator high bearing capacity and low noise。Being designed by the optimization of mainshaft gear 7, as the processing of precision and gear modification means improve the bearing capacity of gear, same bearer ability lower gear overall dimensions reduces, and then makes variator overall dimensions reduce, and is beneficial to arrangement, and can alleviate weight further。Axial length of the present invention is 710mm, and centre-to-centre spacing is only 118mm, and input torque is up to 600～700Nm。
2, arm-tie the 4, first arm-tie props up bracer 5 and the second arm-tie props up bracer 13 and constitutes drawplate type and handle actuator, adopt drawplate type to handle actuator and selector fork 20 is pinned on case of transmission by fulcrum post 18, ensure that operating mechanism rigidity, adopt the selector fork 20 of drawplate type manipulation and high rigid structure and rational arm-tie supporting form, do not need specially to add casting attachment structure, reduce shell cast difficulty and casting flaw incidence rate, ensure low berth-changing strength by reducing mechanical loss to greatest extent；By increasing alignment pin 30, improve the first arm-tie and prop up the positioning precision of bracer 5 and then the positioning precision of raising arm-tie 4, improve maneuvering performance。
3, selector fork 20 is handled actuator manipulation by operating mechanism 24 by drawplate type, and handle structure is connected by screw side on speed change housing。
4, the short stroke synchronizer of employing 8.5mm, and carry the pin joint formula shift fork of lever ratio, when driver's cabin shift bar stroke is constant, lever principle can be utilized to reduce berth-changing strength。
5, gear shift shifting block 22 adopts suitable, special position instruction groove shape and integrates the highly integrated design selecting the functions such as shift pattern instruction, reverse gear position instruction, neutral switch, self-locking, reverse gear protection; operating mechanism is of compact construction and the instruction of good position; take up room little and there is good maneuvering performance, being particularly suitable for when operating mechanism arrangement space is limited and apply。
Claims (10)
1. six grades of single countershaft transmissions, it is characterized in that, including housing, the procapsid (2) that housing includes being connected is cavity with back casing (12) and inside, in this cavity, it is provided with jackshaft (17) and is integrated with the power shaft (1) of input gear, input gear often engages with the jackshaft travelling gear (15) being arranged on jackshaft (17) front end, jackshaft (17) be arranged above main shaft (8), and the countershaft-gear (16) on jackshaft (17) often engages with the mainshaft gear (7) on main shaft (8) respectively, main shaft (8) rear end connects output flange (14)；
Mainshaft gear (7) includes one grade of gear and is respectively arranged with lock unit (9) between gear and six shift of gears to six shift of gears and back gear (10), one grade of gear and intermediate gear, third gear and fourth gear and five grades；Lock unit (9) is connected with main shaft (8) by spline and can slidably reciprocate along the axis direction of main shaft (8)；Lock unit (9) connects lock unit sliding sleeve by spline, back gear (10) connects reverse gear sliding sleeve (11) by spline, lock unit sliding sleeve and reverse gear sliding sleeve (11) all ride and is provided with selector fork (20), the upper end of selector fork (20) is clamping arm-tie (4) respectively, and arm-tie (4) connects operating mechanism (24)；Arm-tie (4) is arranged on housing by supporting construction。
2. a kind of six grades of single countershaft transmissions according to claim 1, it is characterised in that lock unit (9) all adopts lock ring type lock unit, and extension shelves stroke is 8.5mm。
3. a kind of six grades of single countershaft transmissions according to claim 1, it is characterised in that operating mechanism (24) includes the horizontal shift bar (21) being connected with driver's cabin shift bar and can rotating；Horizontal shift bar (21) connects gear shift shifting block (22), and gear shift shifting block (22) connects gear selecting shifting block (23) and arm-tie (4)。
4. a kind of six grades of single countershaft transmissions according to claim 3, it is characterized in that, gear shift shifting block (22) includes the shifting block body containing internal splined hole (2204), outside in internal splined hole (2204), the bottom of shifting block body is provided with the shifting block (2202) for matching with arm-tie (4), the side of shifting block body is provided with the first arc surface (2211), and the first arc surface (2211) is provided with several V-arrangement gear selection position instruction groove (2207)；The opposite side of shifting block body is provided with V-arrangement neutral switch and starts groove (2210) and M shape shift pattern instruction groove (2203), and V-arrangement neutral switch starts groove (2210) and M shape shift pattern indicates and is provided with rectangle undercut (2208) between groove (2203)。
5. a kind of six grades of single countershaft transmissions according to claim 4, it is characterized in that, the side of the first arc surface (2211), shifting block body are additionally provided with the first ladder arc surface (2212) and the second ladder arc surface (2213)；And first the radius of ladder arc surface (2212) less than the radius of the second ladder arc surface (2213), be provided with reverse gear between the two and hang shelves protection inclined-plane (2201)；Reverse gear gear selecting protection inclined-plane (2206) it is provided with between V-arrangement gear selection position instruction groove (2207) and the first ladder arc surface (2212) and the second ladder arc surface (2213)。
6. a kind of six grades of single countershaft transmissions according to claim 4, it is characterized in that, the middle part of shifting block body is additionally provided with the second arc surface (2205) for limiting interlocking block position, and shifting block body is provided with the three-arc face being positioned at internal splined hole (2204) downside；Three-arc face is relative with the second arc surface (2205), forms gear selecting groove (2209)。
7. a kind of six grades of single countershaft transmissions according to claim 1, it is characterised in that the first arm-tie that supporting construction includes by several screws (31) are connected with procapsid (2) props up bracer (5)；First arm-tie props up bracer (5) and is internally provided with groove, and arm-tie (4) is respectively positioned in groove and can slide in groove；Procapsid (2) is provided with several for the first arm-tie being propped up the alignment pin (30) that bracer (5) positions。
8. a kind of six grades of single countershaft transmissions according to claim 7, it is characterized in that, the second arm-tie that supporting construction also includes being arranged on back casing (12) props up bracer (13), arm-tie (4) includes the reverse gear arm-tie (401) that front end flushes, one or two grades of arm-ties (402), three fourth gear arm-ties (403) and five or six grades of arm-ties (404), wherein, reverse gear arm-tie (401) and one or two grades of arm-ties (402) are longer than three fourth gear arm-ties (403) and five or six grades of arm-ties (404), the rear end of reverse gear arm-tie (401) and one or two grades of arm-ties (402) is installed in the second arm-tie and props up on bracer (13)。
9. a kind of six grades of single countershaft transmissions according to claim 7, it is characterized in that, first arm-tie props up bracer (5) and includes two relative horizontally U-shaped framves, and two vertical and parallel Y type frame, wherein the upper end of each Y type frame connects the downside of two U-shaped framves respectively, the bottom of two Y type frame is connected by crossbeam, forms groove。
10. a kind of six grades of single countershaft transmissions according to claim 1, it is characterized in that, the front end of power shaft (1) is supported on procapsid (2) by deep groove ball bearing, main shaft (8) front end by being supported on the rear end of power shaft (1) without outer ring cylinder roller bearing (3), and main shaft (8) rear end is supported on back casing (12) by deep groove ball bearing；Jackshaft (17) front-end and back-end are supported on procapsid (2) and back casing (12) respectively through taper roll bearing；Back gear (10) and mainshaft gear (7) are supported on main shaft (8) by needle bearing (6)。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610183633.XA CN105697739B (en) | 2016-03-28 | 2016-03-28 | A kind of six grades of single countershaft transmissions |
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| CN201610183633.XA CN105697739B (en) | 2016-03-28 | 2016-03-28 | A kind of six grades of single countershaft transmissions |
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| CN105697739A true CN105697739A (en) | 2016-06-22 |
| CN105697739B CN105697739B (en) | 2018-03-13 |
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| CN106224456A (en) * | 2016-09-12 | 2016-12-14 | 上海汽车变速器有限公司 | The six longitudinal transmission assemblies of gear of triple axle structure |
| CN111237450A (en) * | 2020-03-17 | 2020-06-05 | 宝鸡法士特齿轮有限责任公司 | Integrated gear shifting head |
| CN113653794A (en) * | 2021-08-16 | 2021-11-16 | 江苏智造新材有限公司 | Gear selection control block of automobile manual transmission and preparation method |
| DE102022110808A1 (en) | 2022-05-03 | 2023-11-09 | Bayerische Motoren Werke Aktiengesellschaft | Mounting arrangement for a coupling transmission of a motor vehicle |
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| US3921469A (en) * | 1972-07-31 | 1975-11-25 | Eaton Corp | Transmission with resiliently loaded main shaft gears |
| CN2888186Y (en) * | 2005-12-28 | 2007-04-11 | 陕西法士特齿轮有限责任公司 | Six-speed single-middle-shaft full-synchronizer transmission for automobile |
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| CN106224456A (en) * | 2016-09-12 | 2016-12-14 | 上海汽车变速器有限公司 | The six longitudinal transmission assemblies of gear of triple axle structure |
| CN111237450A (en) * | 2020-03-17 | 2020-06-05 | 宝鸡法士特齿轮有限责任公司 | Integrated gear shifting head |
| CN111237450B (en) * | 2020-03-17 | 2024-05-03 | 宝鸡法士特齿轮有限责任公司 | Integrated gear shifting head |
| CN113653794A (en) * | 2021-08-16 | 2021-11-16 | 江苏智造新材有限公司 | Gear selection control block of automobile manual transmission and preparation method |
| DE102022110808A1 (en) | 2022-05-03 | 2023-11-09 | Bayerische Motoren Werke Aktiengesellschaft | Mounting arrangement for a coupling transmission of a motor vehicle |
| DE102022110808B4 (en) | 2022-05-03 | 2024-02-22 | Bayerische Motoren Werke Aktiengesellschaft | Mounting arrangement for a coupling transmission of a motor vehicle |
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