CN105697739B - A kind of six grades of single countershaft transmissions - Google Patents

A kind of six grades of single countershaft transmissions Download PDF

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Publication number
CN105697739B
CN105697739B CN201610183633.XA CN201610183633A CN105697739B CN 105697739 B CN105697739 B CN 105697739B CN 201610183633 A CN201610183633 A CN 201610183633A CN 105697739 B CN105697739 B CN 105697739B
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China
Prior art keywords
gear
arm
tie
grades
shift
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CN201610183633.XA
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Chinese (zh)
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CN105697739A (en
Inventor
高涛
方伟
孙智金
殷崇
殷崇一
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Shaanxi Fast Gear Co Ltd
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Shaanxi Fast Gear Co Ltd
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Priority to CN201610183633.XA priority Critical patent/CN105697739B/en
Publication of CN105697739A publication Critical patent/CN105697739A/en
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Classifications

    • 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
    • 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
    • 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
    • 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
    • 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 present invention relates to a kind of six grades of single countershaft transmissions, including jackshaft and it is integrated with the input shaft of input gear, input gear often engages with the middle shaft transmission gear installed in jackshaft front end, main shaft is installed above jackshaft, countershaft-gear on jackshaft often engages with the mainshaft gear on main shaft respectively, rear-end of spindle connection output flange；Mainshaft gear includes a shelves gear to six shift of gears and back gear, and a shelves gear is to being respectively arranged with synchronizer between six shift of gears；Ridden on the reverse gear sliding sleeve on synchronizer sliding sleeve and back gear on synchronizer and be provided with selector fork, the upper end difference clamping arm-tie of selector fork, arm-tie connection operating mechanism；Arm-tie is arranged on housing by supporting construction.By setting the arm-tie being connected with handle structure in the present invention, formation drawplate type manipulates executing agency, and shift property is good, reduces shell cast difficulty and casting flaw incidence, meanwhile, appearance and size reduces.

Description

A kind of six grades of single countershaft transmissions
【Technical field】
The present invention relates to speed changer field, and in particular to a kind of six grades of single countershaft transmissions.
【Background technology】
The arrangement form of variator axle generally has two-axis and two kinds of triple axle, and the automobile of usual rear wheel drive can be adopted With three-axle speed variator, i.e. input shaft, output shaft and jackshaft.Input shaft front end is connected by means of clutch with engine, output shaft Rear end is connected by flange and universal driving device, and input shaft and output shaft are placed on same horizontal line, jackshaft then with it Be arranged in parallel, power reaches output shaft again from input shaft by gear through jackshaft.
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, tradition Single countershaft transmission appearance and size is big, and weight is big, and bearing capacity is low, high noise, gear shift are heavy.Nowadays high-end light is not adapted to The characteristics of Medium Truck and car require matched well performance, high economy and outstanding ride comfort.
【The content of the invention】
It is an object of the invention to overcome problems of the prior art, there is provided a kind of six grades of single countershaft transmissions, Bearing capacity is strong, and appearance and size is small, and shift property is good.
In order to achieve the above object, the present invention adopts the following technical scheme that：
Including housing, it is cavity that housing, which includes connected procapsid with back casing and inside, in the cavity, in being provided with Countershaft and the input shaft for being integrated with input gear, input gear are often nibbled with the middle shaft transmission gear installed in jackshaft front end Close, main shaft is installed above jackshaft, and the countershaft-gear on jackshaft often engages with the mainshaft gear on main shaft respectively, Rear-end of spindle connects output flange；
Mainshaft gear includes a shelves gear to six shift of gears and back gear, a shelves gear and intermediate gear, third gear tooth Synchronizer is respectively arranged between wheel and fourth gear and five shelves gears and six shift of gears；Synchronizer passes through spline and main shaft phase It can slidably reciprocate even and along the axis direction of main shaft；Synchronizer connects synchronizer sliding sleeve by spline, and back gear passes through flower Ridden on key connection reverse gear sliding sleeve, synchronizer sliding sleeve and reverse gear sliding sleeve and be provided with selector fork, the upper end difference of selector fork Clamping arm-tie, arm-tie connection operating mechanism；Arm-tie is arranged on housing by supporting construction.
Further, synchronizer uses lock ring type synchronized, and it is 8.5mm to hang shelves stroke.
Further, operating mechanism includes the horizontal shift bar that is connected with driver's cabin shift bar and can rotate；Laterally change Lever connects gear shift shifting block, gear shift shifting block connection gear selecting shifting block and arm-tie.
Further, gear shift shifting block includes the shifting block body containing internal splined hole, in the outside of internal splined hole, shifting block body Bottom be provided with and be used for the shifting block that is engaged with arm-tie, the side of shifting block body is provided with the first arc surface, on the first arc surface It is provided with several V-arrangement gear selection positions instruction groove；The opposite side of shifting block body is provided with V-arrangement neutral switch startup groove and M shapes are changed File location indicates groove, and V-arrangement neutral switch starts is provided with rectangle undercut between groove and M shapes shift pattern instruction groove.
Further, the first ladder arc surface and second-order are additionally provided with the side of the first arc surface, shifting block body Terraced arc surface；And first ladder arc surface radius be less than the second ladder arc surface radius, be provided between the two reverse gear extension Shelves protection inclined-plane；V-arrangement gear selection position indicates to be provided with reverse gear between groove and the first ladder arc surface and the second ladder arc surface Gear selecting protects inclined-plane.
Further, the second arc surface for limiting interlocking block position, shifting block sheet are additionally provided with the middle part of shifting block body The three-arc face being provided with body on the downside of internal splined hole；Three-arc face and the second arc surface are relative, form gear selecting groove.
Further, supporting construction includes the first arm-tie support block being connected by several screws with procapsid；First Arm-tie support block is internally provided with groove, and arm-tie is respectively positioned in groove and can slided in groove；If it is provided with procapsid The dry alignment pin for being used to position the first arm-tie support block.
Further, supporting construction also includes the second arm-tie support block being arranged on back casing, and it is neat that arm-tie includes front end Flat reverse gear arm-tie, 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-tie ratios three The rear end of fourth gear arm-tie and five or six grades of arm-tie length, reverse gear arm-tie and one or two grades of arm-ties is installed in the second arm-tie support block.
Further, the first arm-tie support block 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 passes through crossbeam phase Even, groove is formed.
Further, the front end of input shaft is supported on procapsid by deep groove ball bearing, and front-end of spindle passes through without outer ring Cylinder roller bearing is supported on the rear end of input shaft, and rear-end of spindle is supported on back casing by deep groove ball bearing；Before jackshaft End and rear end are supported on procapsid and back casing by taper roll bearing respectively；Back gear and mainshaft gear pass through needle roller Bearings are on main shaft.
Compared with prior art, the present invention has technique effect beneficial below：
By the way that the power of engine to be passed to the input shaft of speed changer by clutch in the present invention, due to input gear Often engaged with middle shaft transmission gear, countershaft-gear often engages with mainshaft gear, is driven by jackshaft, and power is by leading Axle is exported by output flange.By setting the arm-tie being connected with handle structure in the present invention, form drawplate type and manipulate Executing agency, shift property are good；Manipulated and the selector fork of high rigidity structure and rational arm-tie branch by using drawplate type Support form, it is not required to deliberately plus casts attachment structure, reduce shell cast difficulty and casting flaw incidence, reduce to greatest extent Mechanical loss, so as to ensure low berth-changing strength；Meanwhile appearance and size reduces, axial length of the invention is 710mm, and centre-to-centre spacing is only For 118mm, and input torque is up to 600~700Nm, beneficial to arrangement.
Further, the present invention ensures low berth-changing strength by using 8.5mm short stroke synchronizer.
Further, the present invention by using collection select shift pattern instruction, reverse gear position instruction, neutral switch, self-locking, The functions such as shelves protection are in the gear shift shifting block of one so that operating mechanism has compact structure and good position instruction, takes Space is small and has good maneuvering performance, particularly suitable for being applied in the case where operating mechanism arrangement space is limited.
【Brief description of the drawings】
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation at the selector fork 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 of the present invention；
Fig. 5 is the dimensional structure diagram of gear shift shifting block front left side；
Fig. 6 is the dimensional structure diagram 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 of the first arm-tie support block；
Figure 14 is Figure 13 top view.
Wherein, 1- input shafts；2- procapsids；3- is without outer ring cylinder roller bearing；4- arm-ties；5- the first arm-tie support blocks； 6- needle bearings；7- mainshaft gears；8- main shafts；9- synchronizers；10- back gears；11- reverse gear sliding sleeves；12- back casings；13- Two arm-tie support blocks；14- output flanges；Shaft transmission gear among 15-；16- countershaft-gears；17- jackshafts；18- is supported Pin；19- gear shift loose pieces；20- selector forks；21- transverse direction shift bars；22- gear shift shifting blocks；23- gear selecting shifting blocks；24- operating mechanisms； 25- gear selection positions indicate spring；The steel balls of 26- first；27- shift patterns indicate spring；The steel balls of 28- second；29- neutral switch posts Pin；30- alignment pins；31- screws；
2201- reverse gears hang shelves protection inclined-plane；2202- shifting blocks；2203-M shapes shift pattern indicates groove；2204- internal splined holes； The arc surfaces of 2205- second；2206- reverse gears gear selecting protects inclined-plane；2207-V shapes gear selection position indicates groove；2208- rectangle undercuts； 2209- gear selecting grooves；2210-V shapes neutral switch starts groove；The arc surfaces of 2211- first；2212- the first ladder arc surfaces；2213- Second ladder arc surface.
401- reverse gear arm-ties；Mono- or two grades of arm-ties of 402-；The fourth gear arm-ties of 403- tri-；Five or six grades of arm-ties of 404-；
The screwed holes of 501- first；The screwed holes of 502- second；503- pin-and-holes.
【Embodiment】
The present invention is described in further details below in conjunction with the accompanying drawings.
Referring to Fig. 1 and Fig. 2, case of transmission of the present invention includes 12 two sections of connected procapsid 2 and back casing, is " cartridge type " Structure；Case of transmission of the present invention and manipulation housing, rear bearing cover etc. all using aluminum alloy die-casting technological, ensure speed changer It is in light weight.In the cavity that procapsid 2 and back casing 12 are formed, it is provided with jackshaft 17 and is integrated with the input of input gear Axle 1, input gear are often engaged with the middle shaft transmission gear 15 installed in the front end of jackshaft 17, and the top of jackshaft 17 is provided with Main shaft 8, and the countershaft-gear 16 on jackshaft 17 often engages with the mainshaft gear 7 on main shaft 8 respectively, middle shaft transmission gear 15th, connected using interference between countershaft-gear 16 and jackshaft 17, and assembled using " hot charge practice "；The rear end of main shaft 8 connects Output flange 14.
Mainshaft gear 7 is included from rear to the preceding shelves gear of back gear 10 and one to sort successively to six shift of gears, one grade Gear is provided with Double-conical-surface and locked to synchronizer 9 is respectively arranged between six shift of gears specifically between a shelves gear and intermediate gear Ring type synchronizer, first single conical surface lock ring type synchronized, five shelves gears and six step tooth are provided between third gear and fourth gear Second single conical surface lock ring type synchronized between wheel；Synchronizer 9 is connected with main shaft 8 by spline and can be along the axis side of main shaft 8 To slidably reciprocating；Synchronizer sliding sleeve is provided with synchronizer 9, is connected between synchronizer sliding sleeve and the tooth hub of synchronizer for spline, So as to also be connected between synchronizer sliding sleeve and the radial direction of main shaft 8 for spline；Back gear 10 is connected by spline and reverse gear sliding sleeve 11 Connect, synchronizer sliding sleeve and the top of reverse gear sliding sleeve 11 ride and are provided with selector fork 20, selector fork 20 by fulcrum post 18 with Procapsid 2 and the pin joint of back casing 12；Selector fork 20 is stirred synchronizer sliding sleeve by gear shift loose piece 19 and acted, wherein gear shift loose piece 19 are coordinated in the hole being supported on selector fork 20 by hole axle, rotatably；Transmission speed ratio is realized by manipulating selector fork 20 With the adjustment of output power.The upper end difference clamping arm-tie 4 of selector fork 20, arm-tie 4 connects operating mechanism 24；Arm-tie 4 passes through Supporting construction is arranged on above enclosure interior side.
Synchronizer 9 uses lock ring type synchronized, and uses extension shelves stroke to ensure low change for 8.5mm short stroke synchronizer Shelves power.
Referring to Fig. 3 and Fig. 4, the side on the front portion of procapsid 2 of operating mechanism 24, including be connected with driver's cabin shift bar and energy The horizontal shift bar 21 enough rotated；Horizontal shift bar 21 connects gear shift shifting block 22 by spline, and gear shift shifting block 22 can be changed transversely Lever 21 is movable and follows horizontal shift bar 21 to rotate, and completes gear selecting action when gear shift shifting block 22 moves, and completes during rotation Gear shift acts.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 in arm-tie 4 Middle movement to select different stalls arm-tie, realize one/bis-, three/tetra-, five/six, reverse gear gear selecting；Moved by the horizontal band of shift bar 21 Shelves shifting block 22 is rotated to promote arm-tie 4 to move, and 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, internal splined hole 10 to It is connected with horizontal shift bar 21；In the outside of internal splined hole 2204, the bottom of shifting block body, which is provided with, is used for what is be engaged with arm-tie 4 Shifting block 2202, to drive arm-tie 4 to realize choosing, gear shift action；The side of shifting block body is provided with the first arc surface 2211, first The ladder arc surface 2213 of ladder arc surface 2212 and second, to realize reverse gear defencive function；Set on first arc surface 2211 There are several V-arrangement gear selection positions to indicate groove 2207, to provide gear selection position instruction；The radius of first ladder arc surface 2212 is small In the radius of the second ladder arc surface 2213, reverse gear is provided between the two and hangs shelves protection inclined-plane 2201；V-arrangement gear selection position indicates Reverse gear gear selecting protection inclined-plane is provided between the ladder arc surface 2212 of groove 2207 and first and the second ladder arc surface 2213 2206。
V-arrangement neutral switch has been arranged side by side before and after the opposite side of shifting block body and has started groove 2210 and the instruction of M shapes shift pattern Groove 2203, respectively realizing neutral gear indicator function and self-locking, shift pattern indicator function；V-arrangement neutral switch starts groove 2210 Shaped with the " V " shape inclined-plane among M shapes shift pattern instruction groove 2203 for time processing；V-arrangement neutral switch starts groove 2210 and M Rectangle undercut 2208 is provided between shape shift pattern instruction groove 2203, is served mutual when withdrawing, machning v grooves and M shape grooves Do not influence.
The second arc surface 2205 for limiting interlocking block position is additionally provided with the middle part of shifting block body, is set on shifting block body It is equipped with positioned at the three-arc face of the downside of internal splined hole 2204；Three-arc face and the second arc surface 2205 are relative, form gear selecting Groove 2209.
Referring to Figure 10 to Figure 14, the first arm-tie that supporting construction includes with procapsid 2 being connected by four screws 31 supports Block 5, and first arm-tie support block 5 is positioned by two alignment pins 30 being arranged on procapsid 2；First arm-tie supports Block 5 includes two relative horizontally U-shaped framves, and two vertical and parallel Y type frame, wherein the upper end difference of each Y type frame The downside of two U-shaped framves is connected, the bottom of two Y type frame is connected by crossbeam, forms the groove of rectangle, arm-tie 4 is respectively positioned on It can slide in groove and in groove, pass through upper and lower surface inside groove, that is, the upper table of the lower surface of U-shaped frame and crossbeam Spacing, guiding is carried out in face of arm-tie 4.
Supporting construction also includes the second arm-tie support block 13 being arranged on back casing 12, and arm-tie 4 includes what front end flushed 401,1 grades of arm-ties 402 of reverse gear arm-tie, three fourth gear arm-ties 403 and five or six grades of arm-ties 404, wherein, reverse gear arm-tie 401 and 1 The shelves fourth gear of arm-tie 402 to three arm-tie 403 and five or six grades of arm-ties 404 are long, and reverse gear arm-tie 401 and one or two grades of arm-ties 402 are long thin-walled It part, can be deformed in the fabrication process and during stress, hair fastener phenomenon is easily produced in moving process, therefore will in the present invention The rear end of reverse gear arm-tie 401 and one or two grades of arm-ties 402 is arranged in the second arm-tie support block 13 by nylon support set, can be led to The elastic part for crossing nylon support set eliminates the adverse effect that the two arm-tie Zona transformans come, and on the one hand makes reverse gear arm-tie 401 and 1 grades of moving process of arm-tie 402 are smooth, significantly reduce deflection during arm-tie work stress, are beneficial to improve change Fast device maneuvering performance；On the other hand manufacture requirement, the manufacturing cost of reverse gear arm-tie 401 and one or two grades of arm-ties 402 are reduced.Reverse gear It is separately provided for connecting speed changer on 401,1 grades of arm-ties 402 of arm-tie, three fourth gear arm-ties 403 and five or six grades of arm-ties 404 The rectangular channel of gear shift shifting block 22, and for connecting the manhole of corresponding selector fork 20.
U-shaped frame, Y type frame and crossbeam in first arm-tie support block 5 are integral type structure；The U-shaped beam of each horizontally U-shaped frame On offer two the first screwed holes 501 for being used for mounting screw 31, it is fixed for installing to offer among the first screwed hole 501 The pin-and-hole 503 of position pin 30, to be connected with procapsid 2；The centre of each Y type frame offers second screwed hole 502, is Assembly technology hole, each arm-tie are sequentially arranged in the middle part rectangular through slot of the first arm-tie support block 5, and frock passes through the second screwed hole 502 are connected with the first arm-tie support block 5, and each arm-tie 4 is fixed in the first arm-tie support block 5 by frock, whole as small assembly Body assembles, and frock can also provide the assembling point of application, facilitate each arm-tie 4 to assemble, and be removed after the installation of the first arm-tie support block 5 Frock.
The front end of input shaft 1 is supported on procapsid 2 by deep groove ball bearing, and the front end of main shaft 8 without outer ring cylinder by rolling Sub- bearing 3 is supported on the rear end of input shaft 1, and the rear end of main shaft 8 is supported on back casing 12 by deep groove ball bearing；Before jackshaft 17 End and rear end are supported on procapsid 2 and back casing 12 by taper roll bearing respectively；Back gear 10, mainshaft gear 7 are logical Needle bearing 6 is crossed to be supported on main shaft 8.
Specific work process of the present invention is as follows：
Engine power is transferred to transmission input shaft 1 by clutch.Input shaft gear and middle shaft transmission gear 15 Often engagement, middle shaft transmission gear 15 are that interference is connected with jackshaft 17, and power is transferred to countershaft-gear by jackshaft 17 16, countershaft-gear 16 and mainshaft gear 7 often engage respectively, and mainshaft gear 7 dallies on main shaft 8 during neutral position, in gear A certain mainshaft gear 7 is connected with main shaft 8 by spline by synchronizer sliding sleeve, power is transmitted by main shaft 8 and finally by defeated Go out ring flange 14 to export.
During gear selecting, gear selecting shifting block 23 drives the axis direction of the transversely shift bar 21 of gear shift shifting block 22 by gear selecting groove 2209 Mobile, the shifting block 2202 of the end of gear shift shifting block 22 is moved to select different stalls arm-tie 4 in the rectangular channel of arm-tie 4；V-arrangement gear selecting The both sides inclined-plane of position instruction groove 2207 compresses gear selection position by the first steel ball 26 and indicates spring 25, and spring is indicated with gear selection position The position instruction gear selection position that 25 force variations are fed back；When choosing is to reverse gear, reverse gear gear selecting protection inclined-plane 2206 passes through first Steel ball 26 further compresses gear selection position instruction spring 25, makes to select reverse gear resistance to be more than remaining gear, so as to realize 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, the horizontal band of shift bar 21 Move grade shifting block 22 to rotate, the shifting block 2202 of the end of gear shift shifting block 22 promotes arm-tie 4 to move, and arm-tie 4 drives selector fork 20 to move Dynamic, selector fork 20 drives synchronizer sliding sleeve to pass through synchronizer gear ring and main shaft along the direction synchronizing moving of main shaft 8, synchronizer sliding sleeve 8 engagements, that is, realize transmission speed ratio and export the adjustment of power.
In gearshift procedure, inclined-plane compresses shift pattern by the second steel ball 28 and indicated in M shapes shift pattern instruction groove 2203 Spring 27, realize that shift pattern indicates with the shift pattern instruction force variation of spring 27；V-arrangement neutral switch starts the both sides of groove 2210 Inclined-plane drives neutral switch pin 29 to move to control neutral switch contact break-make, realizes neutral gear indicator function；When hanging reverse gear, fall Shelves hang shelves protection inclined-plane 2201 and gear selection position instruction spring 25 are further compressed by the first steel ball 26, are more than extension reverse gear resistance Remaining gear, so as to realize that reverse gear hangs shelves defencive function.Neutral gear or in shelves, pass through shift pattern and indicate that the precompression of spring 27 will Second steel ball 28 is pressed on M shapes shift pattern instruction groove 2203 inclined-plane, so as to realize auto-lock function.When the second steel ball 28 is in M It is neutral position during shape middle bevels, is in file location when the second steel ball 28 is in M shapes both sides inclined-plane.
The present invention passes through the measures such as all aluminium alloy housing, high class gear, brand-new operating mechanism, there is provided one kind carrying energy Six grades of single countershaft transmissions that power is strong, appearance and size is small, in light weight, noise is low, shift property is good, specific advantage are as follows：
1st, all gears use high-precision helical gear in the present invention, ensure speed changer high bearing capacity and low noise.It is logical The optimization design of mainshaft gear 7 is crossed, the processing and gear modification means such as precision improve the bearing capacity of gear, same bearer Ability lower gear appearance and size reduces, and then reduces speed changer appearance and size, beneficial to arrangement, and can further mitigate weight Amount.Axial length of the present invention is 710mm, and centre-to-centre spacing is only 118mm, and input torque is up to 600~700Nm.
2nd, arm-tie 4, the first arm-tie support block 5 and the second arm-tie support block 13 form drawplate type and manipulate executing agency, use Drawplate type manipulates executing agency and selector fork 20 is pinned on case of transmission by fulcrum post 18, ensure that operating mechanism is firm Property, using the selector fork 20 and rational arm-tie supporting form of drawplate type manipulation and high rigidity structure, it is not required to specially plus casting connects Binding structure, shell cast difficulty and casting flaw incidence are reduced, ensure low change by reducing mechanical loss to greatest extent Shelves power；By increasing alignment pin 30, the positioning precision of the first arm-tie support block 5 is improved, and then improves the positioning precision of arm-tie 4, Improve maneuvering performance.
3rd, selector fork 20 manipulates executing agency by drawplate type by operating mechanism 24 and manipulated, and handle structure is connected by screw It is connected to side on speed change housing.
4th, using 8.5mm short stroke synchronizer, and the pin joint formula shift fork of lever ratio is carried, can be in driver's cabin shift bar row In the case that journey is constant, berth-changing strength is reduced using lever principle.
5th, gear shift shifting block 22 selects shift pattern instruction, reverse gear position using suitable, special position instruction groove shape and collection The functions such as instruction, neutral switch, self-locking, reverse gear protection are put in the highly integrated design of one so that operating mechanism has compact Structure and good position instruction, occupy little space and there is good maneuvering performance, particularly suitable for being arranged in operating mechanism Applied in the case of limited space.

Claims (8)

1. a kind of six grades of single countershaft transmissions, it is characterised in that including housing, housing includes connected procapsid (2) with after Housing (12) and inside is cavity, in the cavity, is provided with jackshaft (17) and is integrated with the input shaft of input gear (1), input gear often engages with the middle shaft transmission gear (15) installed in jackshaft (17) front end, the top of jackshaft (17) Main shaft (8) is installed, and the countershaft-gear (16) on jackshaft (17) is often nibbled with the mainshaft gear (7) on main shaft (8) respectively Close, main shaft (8) rear end connection output flange (14)；
Mainshaft gear (7) includes a shelves gear to six shift of gears and back gear (10), a shelves gear and intermediate gear, third gear Synchronizer (9) is respectively arranged between gear and fourth gear and five shelves gears and six shift of gears；Synchronizer (9) passes through spline It is connected with main shaft (8) and can be slidably reciprocated along the axis direction of main shaft (8)；Synchronizer (9) connects synchronizer by spline and slided Set, back gear (10) connect reverse gear sliding sleeve (11) by spline, setting are ridden on synchronizer sliding sleeve and reverse gear sliding sleeve (11) There are selector fork (20), the upper end difference clamping arm-tie (4) of selector fork (20), arm-tie (4) connection operating mechanism (24)；Arm-tie (4) it is arranged on by supporting construction on housing；
Operating mechanism (24) includes the horizontal shift bar (21) that is connected with driver's cabin shift bar and can rotate；Horizontal shift bar (21) gear shift shifting block (22), gear shift shifting block (22) connection gear selecting shifting block (23) and arm-tie (4) are connected；
Gear shift shifting block (22) includes the shifting block body containing internal splined hole (2204), in the outside of internal splined hole (2204), shifting block The bottom of body is provided with the shifting block (2202) for being used for being engaged with arm-tie (4), and the side of shifting block body is provided with the first arc surface (2211) several V-arrangement gear selection positions instruction groove (2207), is provided with the first arc surface (2211)；The opposite side of shifting block body It is provided with V-arrangement neutral switch and starts groove (2210) and M shapes shift pattern instruction groove (2203), V-arrangement neutral switch starts groove (2210) it is provided with rectangle undercut (2208) between M shapes shift pattern instruction groove (2203).
2. a kind of six grades of single countershaft transmissions according to claim 1, it is characterised in that synchronizer (9) is using lock Ring type synchronizer, and it is 8.5mm to hang shelves stroke.
3. a kind of six grades of single countershaft transmissions according to claim 1, it is characterised in that in the first arc surface (2211) Side, be additionally provided with the first ladder arc surface (2212) and the second ladder arc surface (2213) on shifting block body；And first rank The radius of terraced arc surface (2212) is 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)；V-arrangement gear selection position instruction groove (2207) and the first ladder arc surface (2212) and the second ladder arc surface (2213) reverse gear gear selecting protection inclined-plane (2206) is provided between.
4. a kind of six grades of single countershaft transmissions according to claim 1, it is characterised in that the middle part of shifting block body is also set The second arc surface (2205) for limiting interlocking block position is equipped with, is provided with shifting block body under internal splined hole (2204) The three-arc face of side；Three-arc face and the second arc surface (2205) relatively, form gear selecting groove (2209).
5. a kind of six grades of single countershaft transmissions according to claim 1, it is characterised in that if supporting construction includes passing through The first arm-tie support block (5) that dry screw (31) is connected with procapsid (2)；First arm-tie support block (5) is internally provided with logical Groove, arm-tie (4) are respectively positioned in groove and can slided in groove；Several are installed on procapsid (2) to be used to draw first The alignment pin (30) that plate support block (5) is positioned.
6. a kind of six grades of single countershaft transmissions according to claim 5, it is characterised in that supporting construction also includes installation The second arm-tie support block (13) on back casing (12), arm-tie (4) include front end flush reverse gear arm-tie (401), one or two grades Arm-tie (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) it is longer than three fourth gear arm-ties (403) and five or six grades of arm-ties (404), after reverse gear arm-tie (401) and one or two grades of arm-ties (402) End is installed in the second arm-tie support block (13).
A kind of 7. six grades of single countershaft transmissions according to claim 5, it is characterised in that the first arm-tie support block (5) Including two relative horizontally U-shaped framves, and two vertical and parallel Y type frame, wherein the upper end of each Y type frame connects respectively The downside of two U-shaped framves, the bottom of two Y type frame are connected by crossbeam, form groove.
8. a kind of six grades of single countershaft transmissions according to claim 1, it is characterised in that the front end of input shaft (1) leads to Cross deep groove ball bearing to be supported on procapsid (2), main shaft (8) front end without outer ring cylinder roller bearing (3) by being supported on input The rear end of axle (1), main shaft (8) rear end are supported on back casing (12) by deep groove ball bearing；Jackshaft (17) front-end and back-end It is supported on respectively by taper roll bearing on procapsid (2) and back casing (12)；Back gear (10) and mainshaft gear (7) are logical Needle bearing (6) is crossed to be supported on main shaft (8).
CN201610183633.XA 2016-03-28 2016-03-28 A kind of six grades of single countershaft transmissions Active CN105697739B (en)

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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
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
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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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
CN103527755A (en) * 2013-10-16 2014-01-22 浙江长泰机械有限公司 Middle-sized automotive transmission with main box and auxiliary box
CN104329415A (en) * 2014-11-07 2015-02-04 陕西法士特齿轮有限责任公司 Six-stage single-middle-shaft speed changer
CN205479169U (en) * 2016-03-28 2016-08-17 陕西法士特齿轮有限责任公司 Six keep off single jackshaft derailleur

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Publication number Priority date Publication date Assignee Title
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
CN103527755A (en) * 2013-10-16 2014-01-22 浙江长泰机械有限公司 Middle-sized automotive transmission with main box and auxiliary box
CN104329415A (en) * 2014-11-07 2015-02-04 陕西法士特齿轮有限责任公司 Six-stage single-middle-shaft speed changer
CN205479169U (en) * 2016-03-28 2016-08-17 陕西法士特齿轮有限责任公司 Six keep off single jackshaft derailleur

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