CN102582424A - Rear drive assembly of mechanical intelligent self-adaptive automatic gearbox - Google Patents
Rear drive assembly of mechanical intelligent self-adaptive automatic gearbox Download PDFInfo
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- CN102582424A CN102582424A CN2012100278272A CN201210027827A CN102582424A CN 102582424 A CN102582424 A CN 102582424A CN 2012100278272 A CN2012100278272 A CN 2012100278272A CN 201210027827 A CN201210027827 A CN 201210027827A CN 102582424 A CN102582424 A CN 102582424A
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Abstract
The invention discloses a rear drive assembly of a mechanical intelligent self-adaptive automatic gearbox, which comprises the gearbox and a power device which are arranged on a vehicle frame, wherein the power device outputs power through a transmission shaft of the gearbox and is backwards in transmission connection with a differential mechanism through a universal joint; and the differential mechanism is in transmission connection with rear wheels of a vehicle. The rear drive assembly has all advantages of the existing cam self-adaptive automatic gearbox, adopts a pre-arranged or centrally-arranged rear drive structure and is combined with a transmission structure of a spiral cam pair, and the radial size of the rear drive assembly is further reduced, so the volume is decreased, the adaptability is high and the service life is greatly prolonged; and the spiral structure transmits steadily, is stressed evenly and has incomparable stability and smoothness, so the work efficiency is further improved, better energy-saving and consumption-reducing effects are achieved, vehicle emissions are greatly controlled, the rear drive assembly is more suitable for being used on pure electric vehicles and tricycles, and the dynamic performance, the economical performance, the driving safety performance and the comfortable performance of the vehicles are greatly improved.
Description
Technical field
The present invention relates to a kind of self-propelled vehicle and drive assembly, particularly a kind of mechanical intelligence self-adapting automatic gear shift device rear drive assembly.
Background technology
In the prior art; Three-wheel vehicle or automobile all are through manual or acceleration pedal direct control throttle gate or current control speed basically; The operation of navigating mate is depended in the operation of handle or acceleration pedal fully; Usually can cause operation and garage's situation not to match, the stall phenomenon appears in causes motor or driving engine fluctuation of service.
Self-propelled vehicle by rider under the situation of not knowing resistance to motion; The transmission system that only rule of thumb controls; Have following problem unavoidably: 1. when startup, upward slope and heavy load, because resistance to motion increases, force motor or engine speed to descend and work in the low efficiency district.2. owing to do not have mechanical transmission adjustment moment of torsion and speed, can only promote the use of, can not satisfy under mountain area, hills and the heavy load conditions and use, dwindle range of use at region of no relief; 3. drive wheel place installing space is little, has installed to be difficult to hold automatic transmission with hydraulic torque converter and other up-to-date technology behind driving engine or the motor again; 4. do not possess adaptive function, can not detect, revise and get rid of the operation mistake of chaufeur automatically; 5. change when unexpected in the speed of a motor vehicle, must cause motor or engine power and resistance to motion to be difficult to coupling.6. continuing, distance is short, hill climbing ability is poor, and applicable area is little.
Particularly the problems referred to above cause the power consumption of pure electro-tricycle or electronlmobil bigger, and charging back operating range is not ideal enough.
In order to overcome the above problems; The application contriver has invented a series of cam self-adapting automatic gear shifting device; Utilize the resistance to motion power cam, reach autoshift and, have effect preferably according to the purpose of resistance to motion Adaptive matching speed of a motor vehicle output torque; Though aforesaid cam self-adapting automatic gear shifting device has above-mentioned advantage, stability and high efficiency improve a lot than prior art, and the part component structural is comparatively complicated; The change-speed box volume is bigger; Simultaneously, owing to adopted a plurality of cam structures, stability is still not ideal enough; Though on service life, increase,, still have room for improvement service life according to structural analysis than prior art; Simultaneously, need and to have conformability preferably to heavy-duty vehicle.
Therefore, need a kind of above-mentioned cam self-adapting automatic gear shifting device to be improved, not only can self adaptation do not cut off with the change in resistance of going carry out automatically under the situation of propulsive effort shifted; Solve the little problem that can not satisfy road usage under the complex conditions of motor torque-rotation speed change; Stationarity is good, further increases work efficiency, and has better energy conservation and consumption reduction effects; And reduce volume; And further improve service life, more be applicable to vehicle uses such as electronlmobil, and counterweight live motor vehicle has comformability preferably.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of mechanical intelligence self-adapting automatic gear shift device rear drive assembly, not only can self adaptation do not cut off with the change in resistance of going carry out automatically under the situation of propulsive effort shifted; Solve the little problem that can not satisfy road usage under the complex conditions of motor torque-rotation speed change; Stationarity is good, further increases work efficiency, and has better energy conservation and consumption reduction effects; And reduce volume; And further improve service life, more be applicable to vehicle uses such as electronlmobil, and counterweight live motor vehicle has comformability preferably.
Mechanical intelligence self-adapting automatic gear shift device rear drive assembly of the present invention comprises the change-speed box and the engine installation that are arranged on the vehicle frame, and said engine installation is provided with the rotational power mouth and power is imported change-speed box;
Change-speed box comprises mission case, transmission shaft, slow shelves transmission device and is arranged on the mechanical intelligence adaptive rate assembly on the transmission shaft, said transmission shaft and mission case normal-running fit;
Mechanical intelligence adaptive rate assembly comprises the axial external conical sleeve of torus, the axial inner conical drogue of torus and speed change elastic element;
Circle is the axial conical surface in the axial inner conical drogue of torus, and the axial external conical sleeve cylindrical of torus is the axial conical surface, and the mode that the axial inner conical drogue of torus is worked in coordination with the conical surface is enclosed within the axial external conical sleeve excircle of torus; The axial external conical sleeve of said torus is coated at transmission shaft and interior circle is provided with the inside spin cam, and transmission shaft is provided with the external spiral cam that matches with the inside spin cam and forms the spiral cam pair;
The speed change elastic element applies the predetermincd tension of the inner conical surface applying transmission that makes its male cone (strobilus masculinus) and the axial inner conical drogue of torus to the axial external conical sleeve of torus; During said transmission shaft takeoff output, the spiral prominence wheel set applies the axial component opposite with the elastic element predetermincd tension to the axial external conical sleeve of torus;
Said slow shelves transmission device comprises overriding clutch and intermediate reduction gear transmission device; The inner ring of said overriding clutch surmounts between the takeoff output hand of rotation of transmission shaft and outer ring; The axial inner conical drogue of said torus cooperates with the outer ring transmission of overriding clutch through the intermediate reduction gear transmission device; The inner ring normal-running fit of said overriding clutch is coated at transmission shaft, is passed to the axial external conical sleeve of torus through the slow shelves of slow shelves cam-engaged adjutant power by the inner ring of overriding clutch between the axial external conical sleeve of the inner ring of said overriding clutch and torus;
The axial inner conical drogue of the torus of said change-speed box cooperates in the circumferencial direction transmission with the rotational power output block of engine installation; The transmission shaft of change-speed box is provided with clutch end and is connected with diff backward through universal-joint, and said diff is in transmission connection in vehicle rear wheel.
Further, said overriding clutch is the spring-piece type overriding clutch, comprises roller and retainer, is formed for the engaging groove that meshes or separate with roller between the outer ring of overriding clutch and the inner ring; Said retainer comprises supporting blade, pillar stiffener and reed; Said pillar stiffener is corresponding one by one with roller; Said supporting blade is arranged at pillar stiffener and between supporting blade and pillar stiffener outside face, forms slot in the circumferencial direction heavy keying fit; Said reed is provided with the fitting portion that embeds slot, and reed extends slot and along the engagement direction of engaging groove roller applied predetermincd tension, and said slot is provided with reed owing to roller applied the distortion allowance of elastic deformation that predetermincd tension produces;
Further, said fitting portion is provided with pressure-bearing portion, and said supporting blade is provided with pressure-bearing portion applied and makes fitting portion embed the pressure of slot and limit fitting portion from pressing portion that slot is deviate from.
Further, said pressure-bearing portion is formed in one in fitting portion and outward extending elastic piece structure, and pressure-bearing portion forms the pressure-bearing section to the bending of pressing portion, and pressing portion forms superimposed in pressure-bearing section outside face and pressing section that the pressure-bearing section is exerted pressure to the bending of pressure-bearing portion;
Further; Said intermediate reduction gear transmission device comprises slow shelves tween drive shaft, is arranged at first slow grade of gear and second slow grade of gear that slow shelves tween drive shaft cooperates with its transmission; The axial inner conical drogue of said torus be provided with external toothing and with first slow grade of meshed transmission gear, the outer ring engaged transmission of second slow grade of gear and overriding clutch;
Further; Said speed change elastic element is the speed change butterfly spring that is coated at transmission shaft; The inner ring of said speed change butterfly spring and overriding clutch is respectively in the axial both sides of the axial external conical sleeve of torus; Speed change butterfly spring withstands axial external conical sleeve one axial end portion of torus through the speed change packing ring that bearing fit is coated at transmission shaft, and another axial end portion of the axial external conical sleeve of torus cooperates through the edge type strainer auxiliary driving with the inner ring of overriding clutch;
Further; Said engine installation is a motor; Said motor housing is integrated in the mission case of change-speed box, and the power take-off shaft normal-running fit of motor extends into the mission case of change-speed box and cooperates in the circumferencial direction transmission through speed reducing gear pair with the axial inner conical drogue of the torus of change-speed box;
Further, said speed change butterfly spring is arranged on the front side of the axial external conical sleeve of torus, and overriding clutch is positioned at the axial external conical sleeve rear side of torus; The expansion direction of the inside spin cam of the axial external conical sleeve of said torus and the external spiral cam of transmission shaft is opposite with transmission shaft takeoff output hand of rotation after by forward direction; The axial external conical sleeve of the inner ring of said overriding clutch and torus is provided with edge type strainer respectively and intermeshes through edge type strainer that to form slow shelves cam-engaged secondary; The edge type strainer pressure line expansion direction of the inner ring of overriding clutch and the axial external conical sleeve of torus is identical with transmission shaft takeoff output hand of rotation after by forward direction;
Further; The driven gear of said speed reducing gear pair cooperates with the axial inner conical drogue transmission of the torus of change-speed box through gear frame; Said gear frame front end is fixedly connected on driven gear; Driven gear is supported in the transmission shaft of change-speed box through first annular bearing with rolling contact; The gear frame rear end is fixedly connected on the axial inner conical drogue of torus of change-speed box, and the axial inner conical drogue cylindrical of the torus of change-speed box is supported in the mission case of change-speed box through second annular bearing with rolling contact, in the cavity of speed change butterfly spring between the transmission shaft cylindrical of gear frame and change-speed box of change-speed box;
Further, the shaft part outer round surface of the inner ring normal-running fit of said transmission shaft and overriding clutch is provided with oilway.
The invention has the beneficial effects as follows: mechanical intelligence self-adapting automatic gear shift device rear drive assembly of the present invention; Whole advantages with existing cam self-adapting automatic gear shifting device; If can detect driving torque-rotating speed and resistance to motion-GES according to resistance to motion; Make motor or engine output and traveling state of vehicle be in the optimum matching state all the time; Realize the balance control of vehicular drive moment and comprehensive resistance to motion, self adaptation is carried out shifted with the change in resistance of going automatically under the situation of not cutting off propulsive effort; Can satisfy under mountain area, hills and the heavy load conditions and use, it is mild that motor or engine load are changed, and power actuated vehicle operates steadily, and improves safety;
Simultaneously, the present invention adopts the drive mechanism of preposition or mid-rear-guard, further strengthens the transmission comformability of mechanism, and service life, tool improved a lot; And the helical structure stable drive, stressed evenly have unrivaled stability and smoothness, further increases work efficiency; Utilize the twin variator structure, form many grades, make the speed shelves change more steady and smooth; More be applicable to heavy-duty vehicle, prolong running time and operating range, improve dynamic property, economy, drive safety and the traveling comfort of vehicle greatly; Directly output power through diff; Reduce messenger chain, have better energy conservation and consumption reduction effects, bigger control vehicle discharging.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the axial section structural representation of change-speed box;
Fig. 3 is the axial section structural representation of diff;
Fig. 4 is the axial external conical sleeve structure scheme drawing of torus;
Fig. 5 is the inner ring structural representation of overriding clutch;
Fig. 6 is the overriding clutch structural representation;
Fig. 7 is that pillar stiffener, supporting blade and reed cooperate scheme drawing;
Fig. 8 is the reed structure scheme drawing;
Fig. 9 is the axial semi-sictional view structural representation of overriding clutch.
The specific embodiment
Fig. 1 is a structural representation of the present invention, and Fig. 2 is the axial section structural representation of change-speed box, and Fig. 3 is the axial section structural representation of diff; Fig. 4 is the axial external conical sleeve structure scheme drawing of torus; Fig. 5 is the inner ring structural representation of overriding clutch, and Fig. 6 is the overriding clutch structural representation, and Fig. 7 is that pillar stiffener, supporting blade and reed cooperate scheme drawing; Fig. 8 is the reed structure scheme drawing; Fig. 9 is the axial semi-sictional view structural representation of overriding clutch, and as shown in the figure: the engine installation of present embodiment is a motor, during work by back eyes front clickwise.
Mechanical intelligence self-adapting automatic gear shift device rear drive assembly of the present invention comprises the change-speed box a and the engine installation that are arranged on the vehicle frame c, and the clutch end of said change-speed box a outputs power; Said engine installation is provided with the rotational power mouth and power is imported change-speed box a;
Change-speed box a comprises mission case 3, transmission shaft 1, slow shelves transmission device and is arranged on the mechanical intelligence adaptive rate assembly on the transmission shaft 1, said transmission shaft 1 and mission case normal-running fit;
Mechanical intelligence adaptive rate assembly comprises the axial external conical sleeve of torus 14, the axial inner conical drogue 17 of torus and speed change elastic element;
Circle is the axial conical surface in the axial inner conical drogue 17 of said torus; Axial external conical sleeve 14 cylindricals of torus are the axial conical surface; The mode that the axial inner conical drogue 17 of torus is worked in coordination with the conical surface is enclosed within axial external conical sleeve 14 excircles of torus, cooperates transmission through the tapered sleeve structure, and inner conical surface and male cone (strobilus masculinus) one of at least need have certain roughness; Belong to those skilled in the art and can know, repeat no more at this according to this record; The axial external conical sleeve 14 of said torus is coated at transmission shaft 1 and interior circle is provided with inside spin cam 14a, and transmission shaft 1 is provided with the external spiral cam 1a that matches with inside spin cam 14a and forms the spiral prominence wheel set; The spiral prominence wheel set is the helicitic texture that cooperatively interacts; When the axial external conical sleeve 14 of torus rotates; Through the spiral prominence wheel set transmission shaft 1 is produced axially and two component of circumferencial direction; Wherein circumferencial direction component drives transmission shaft 1 and rotates also outputting power, and axial component is offset by the mounting structure of transmission shaft 1, and its reaction force acts is in the axial external conical sleeve 14 of torus and put on the speed change elastic element;
The speed change elastic element applies the predetermincd tension of the inner conical surface applying transmission that makes its male cone (strobilus masculinus) and the axial inner conical drogue 17 of torus to the axial external conical sleeve 14 of torus; During said transmission shaft 1 takeoff output, the spiral prominence wheel set applies and the opposite axial component of elastic element 28 predetermincd tensions the axial external conical sleeve 14 of torus; That is to say; The rotation direction of the spiral cam of spiral prominence wheel set is relevant with the takeoff output rotation direction of transmission shaft, and those skilled in the art are according to above-mentioned record, under the prerequisite of learning transmission shaft takeoff output direction; Can learn the rotation direction of spiral cam, repeat no more at this;
Said slow shelves transmission device comprises overriding clutch and intermediate reduction gear transmission device; The inner ring 31 of said overriding clutch surmounts between the takeoff output hand of rotation of transmission shaft 1 and outer ring 15; The axial inner conical drogue 17 of said torus cooperates with outer ring 15 transmissions of overriding clutch through the intermediate reduction gear transmission device; Inner ring 31 normal-running fiies of said overriding clutch are coated at transmission shaft 1; Be passed to the axial external conical sleeve 14 of torus through the slow shelves of slow shelves cam-engaged adjutant power by the inner ring 31 of overriding clutch between the axial external conical sleeve 14 of the inner ring 31 of said overriding clutch and torus; Should slow shelves cam-engaged pair can be intermeshing edge type strainer, also can be spiral cam or the like; The intermediate reduction gear transmission device can be primary gear speed reducing transmission or other reducing transmission structures, and this intermediate reduction gear transmission device can guarantee that rotating speed that the axial inner conical drogue 17 of torus is passed to the outer ring 15 of overriding clutch is lower than the rotating speed of the axial inner conical drogue 17 of torus;
The axial inner conical drogue of the torus of said change-speed box cooperates in the circumferencial direction transmission with the rotational power output block of engine installation; The transmission shaft 1 of change-speed box is provided with clutch end and is connected with diff 27 backward through universal-joint b, and said diff 27 is in transmission connection in vehicle rear wheel d; As shown in the figure, universal-joint b is connected in the transmission shaft of change-speed box through drive link 7 transmissions, is connected in the transmission shaft of diff 27 through drive link 7a transmission, has stronger comformability; As shown in the figure, said diff 27 is positioned at diff casing 27a, and the power intake of the clutch end of transmission shaft 1 and diff 27 is realized the alternating axis transmission through bevel-gear pair 39; Be convenient to arrange change-speed box, be convenient to arrange, and make rational in infrastructure at four-wheel or three-wheeled electric vehicle upper edge fore-and-aft direction; Be convenient to install and use; And the transmission comformability is strong, is beneficial to reduce vibration, raises the efficiency.
In the present embodiment, said overriding clutch is the spring-piece type overriding clutch, comprises roller 33 and retainer, is formed for the engaging groove that meshes or separate with roller between the outer ring 15 of overriding clutch and the inner ring 31; Said retainer comprises supporting blade 36, pillar stiffener 35 and reed 34; Said pillar stiffener 35 is corresponding one by one with roller 33; Said supporting blade 36 is arranged at pillar stiffener 35 and between supporting blade 36 and pillar stiffener 35 outside faces, forms slot 37 in the circumferencial direction heavy keying fit; Said reed 34 is provided with the fitting portion 34a that embeds slot 37; Reed 34 extends slot 37 and along the engagement direction of engaging groove roller 33 is applied predetermincd tension, and said slot 37 is provided with reed 34 owing to roller 33 applied the distortion allowance of elastic deformation that predetermincd tension produces; The overriding clutch of this structure is avoided on outer ring 15, directly processing limit base, simplifies the course of processing, increases work efficiency; Cut down finished cost, guarantee processing and assembly precision, and be different from the structure of concentrating attachment point in the prior art; Do not adopt spot welded fixed sturcture, the consequence that metallographic structure changes can not take place, eliminated since the engagement of overriding clutch with separates elasticity of spring leaf and is out of shape the stress concentration that causes; And make reed 34 have freedom of movement preferably; Thereby can improve the consequently operation life of whole overriding clutch of reed 34, reed can reach the elastic deformation that has predetermincd tension more than 5,000,000 times, reduces greatly and uses and maintenance cost; Associated components of the present invention damages the back and changes easily, and outer ring 15 does not need integral body to scrap, and reduces maintenance and use cost; Owing to adopt the retainer structure beyond the outer ring 15; The axial length that can theory unlimited prolongs overriding clutch and roller 33, the increase length of action that is to say; Can increase the axial length of overriding clutch according to the load-bearing needs; Thereby increase the load-carrying capacity of overriding clutch, and reduce to prolong the service life of overriding clutch than the overriding clutch radial dimension under the high bearing capacity; Simultaneously; Because reed is for distribute vertically; Thereby can carry out multiple spot to roller as required and apply predetermincd tension, guarantee than major axis spacing balance to roller under the prerequisite of size, make it not depart from parallel with inner ring axis; Thereby guarantee the smooth operation of overriding clutch, avoid mechanical breakdown;
As shown in the figure; Said supporting blade 36 is along circumferentially being wrapped in pillar stiffener 35 and setting and hold predetermincd tension tightly; The cross-sectional plane of said pillar stiffener 35 is circumferentially non-circular in relative rotation for limiting supporting blade 36, forms slot 37 between a side of supporting blade 36 and pillar stiffener 35 1 side surfaces; The cross-sectional plane of pillar stiffener 35 adopts polymorphic structure, and supporting blade 36 can limit it along circumferentially rotating after being wrapped in pillar stiffener 35, and is simple in structure; Enforcement, easy accessibility utilize non-circular structure to limit the circumferential movement of supporting blade 36, form comparatively stable slot 37 structures; For the installation of reed 34 provides condition; Do not need other mechanical fixed structure, avoid guaranteeing its service life because structures such as spot welding form the mechanical force to reed; As shown in the figure, the polymorphic structure of pillar stiffener 35 cross-sectional planes for constituting by circular arc and straight line, and supporting blade 36 is wrapped in the polymorphic structure periphery, makes it not have condition in relative rotation.
In the present embodiment, said fitting portion 34a is provided with the 34b of pressure-bearing portion, and said supporting blade 36 is provided with the 34a of pressure-bearing portion applied and makes fitting portion 34a embed the pressure of slot 37 and limit fitting portion 34a from the 36a of pressing portion that slot is deviate from; Guarantee when avoiding fitting portion 34a to deviate from that reed 34 has degree of freedom swing preferably, prolongs its service life.
In the present embodiment; The said pressure-bearing 34b of portion is formed in one in fitting portion 34a and outward extending elastic piece structure; The 34b of pressure-bearing portion forms pressure-bearing section 34c to the 36a of pressing portion bending, and the 36a of pressing portion forms superimposed in pressure-bearing section 34c outside face and pressing section 36b that pressure-bearing section 34c is exerted pressure to the 34b of pressure-bearing portion bending; This pressure makes fitting portion be embedded in slot 37, forms to stablize embedded structure; As shown in the figure, the rounding off structure is adopted in bending, avoids stress concentration; Directly slip into through external force during installation and the pressure-bearing section is superimposed in the pressing section, utilize pressure-bearing section self elasticity to form insertion force, simple in structure; Easy for installation, can't produce bigger distortion and stress concentration.
As shown in the figure; Said retainer also comprises pushing out ring I 32 and pushing out ring II 24; Said pushing out ring I 32 and pushing out ring II 15 axial two ends, 24 apportion outer rings and with outer ring 15 in the circumferencial direction heavy keying fit; Said pillar stiffener 4 two ends correspondence respectively are supported in pushing out ring I 32 and pushing out ring II 24, pillar stiffener 35 at self circumferencial direction and pushing out ring I 32 or/and pushing out ring II 24 heavy keying fit; After the assembling, pushing out ring I 32 and pushing out ring II 24 can pass through screw, riveted and fixed in the outer ring 15, also can be fixed in outer ring 15 to its axial limiting through other parts; As shown in the figure, pillar stiffener 35 is parallel to roller 33; Engaging groove engagement direction is the direction that engaging groove shoals gradually, the direction that the engagement space of engaging groove and inner ring 31 cylindricals formation just narrows down gradually; The elasticity of reed 34 enough avoids roller oppositely to mesh when overriding clutch surmounts; As shown in the figure; Said pillar stiffener 35 axial ends form flat axle and penetrate the structure of the flat hole of pushing out ring I 32 with formation circumferencial direction heavy keying fit through flat axle correspondence; Simple in structure, realize easily, and owing to form the shaft shoulder between flat axle and pillar stiffener 35 bodies; Thereby better positioning effect is arranged, be beneficial to assembling and keep running state preferably; The pillar stiffener 35 axial other ends pass the circular hole on the pushing out ring II 24, and the end that pillar stiffener passes the circular hole on the pushing out ring II forms conical head, and the conehead structure has comformability preferably, is beneficial to penetrate assembling, increases work efficiency.
Said pushing out ring I 32 all processes sliding bearing structure with pushing out ring II 24; As shown in the figure; 15 axial two ends, said outer ring form deep gouge (deep gouge 15a as shown in the figure and deep gouge 15b) respectively; The radial groove (radial groove 15a and radial groove 15b) at 15 axial two ends, said outer ring is arranged at circle in the cooresponding deep gouge cell wall respectively; Said pushing out ring I 32 and the corresponding respectively deep gouge that embeds of pushing out ring II 24; Pushing out ring I 32 is respectively equipped with pushing out ring II 24 and is used for the corresponding radial protrusion (radial protrusion 32a and radial protrusion 24a) that embeds radial groove (radial groove 15a and radial groove 15b); The radial protrusion (radial protrusion 32a and radial protrusion 24a) of pushing out ring I 32 and pushing out ring II 24 and corresponding radial groove (radial groove 15a and radial groove 15b) over against, push vertically and get final product; It is stable with assembling between outer ring 15 and inner ring 31, to form the compact conformation that supports and be beneficial to the maintenance retainer, can not disturb because of external force to come off; Simultaneously, be beneficial to smooth operation between outer ring and the inner ring.
In the present embodiment; Said intermediate reduction gear transmission device comprises slow shelves tween drive shaft 18, is arranged at first slow grade of gear 20 and second slow grade of gear 19 that slow shelves tween drive shaft 18 cooperates with its transmission; As shown in the figure, slow shelves tween drive shaft 18 through annular bearing with rolling contact 22 and annular bearing with rolling contact 16 normal-running fiies in mission case 3; The axial inner conical drogue 17 of said torus be provided with external toothing 10 and with first slow grade of gear, 20 engaged transmission, outer ring 15 engaged transmission of second slow grade of gear 19 and overriding clutch; Simple and compact for structure, realize slow grade transmission of power.
In the present embodiment; Said speed change elastic element is the speed change butterfly spring 28 that is coated at transmission shaft 1; The inner ring 31 of said speed change butterfly spring 28 and overriding clutch is respectively in the axial both sides of the axial external conical sleeve 14 of torus; Speed change butterfly spring withstands axial external conical sleeve 14 1 axial end portions of torus through the speed change packing ring 21 that bearing fit is coated at transmission shaft 1, and axial external conical sleeve 14 another axial end portions of torus cooperate through the edge type strainer auxiliary driving with the inner ring 31 of overriding clutch; Simple in structure, arrangement space is little, utilizes the transfer route reasonable Arrangement parts of power, makes the present invention more be applicable to the use of less space.
In the present embodiment; Said engine installation is a motor 26; Said motor 26 shells integrated (captive joint is generally detachable captive joint) are in the mission case 3 of change-speed box, and power take-off shaft 5 normal-running fiies of motor 26 extend into the mission case 3 of change-speed box and cooperate in the circumferencial direction transmission with the axial inner conical drogue of the torus of change-speed box; As shown in the figure, power take-off shaft 5 is supported in motor 26 shells through annular bearing with rolling contact; Electric machine casing is integrated in mission case, makes this driving assembly structure compact, and globality is strong, just with manufacturing, Assembly &Disassembly maintenance, simultaneously, reduces messenger chain, improves driving efficiency.
In the present embodiment; The power take-off shaft 5 of said motor 26 cooperates in the circumferencial direction transmission through speed reducing gear pair with the axial inner conical drogue of the torus of change-speed box; As shown in the figure, speed reducing gear pair comprises driving gear 4 that cooperates in the circumferencial direction transmission with power take-off shaft 5 and the driven gear 2 that cooperates in the circumferencial direction transmission with the axial inner conical drogue of the torus of change-speed box; Be beneficial to the torque loads that reduces change-speed box itself, improve its service life.
In the present embodiment, speed change butterfly spring 28 is arranged on the front side of the axial external conical sleeve 14 of torus, and the said front and back here are corresponding with the vehicle front and back; As shown in the figure, be provided with plane rolling bearing 9 between axial external conical sleeve 14 left ends of speed change packing ring 21 and torus, to reduce friction; Overriding clutch is positioned at axial external conical sleeve 14 rear sides of torus; The expansion direction of the external spiral cam 1a of the inside spin cam 14a of the axial external conical sleeve 14 of said torus and transmission shaft 1 is opposite with transmission shaft takeoff output hand of rotation after by forward direction; The inner ring 31 of said overriding clutch and the axial external conical sleeve 14 of torus are provided with edge type strainer respectively and intermesh through edge type strainer that to form slow shelves cam-engaged secondary; The edge type strainer pressure line expansion direction of the inner ring 31 of overriding clutch and the axial external conical sleeve 14 of torus is identical with transmission shaft takeoff output hand of rotation after by forward direction; As shown in the figure, the edge type strainer 31a of the inner ring 31 of overriding clutch cooperates between the edge type strainer 14b of the axial external conical sleeve 14 of torus, edge type strainer 14b and edge type strainer 31a that to form edge type strainer secondary, is used for transmission; As shown in the figure, inner ring 31 right-hand members of overriding clutch are provided with surface bearing 11 through surface bearing 12 axial limitings between axial inner conical drogue 17 right-hand members of left end and torus, realize more stable axial limiting.
In the present embodiment; The driven gear 2 of said speed reducing gear pair cooperates with the axial inner conical drogue transmission of the torus of change-speed box through gear frame 25, and said gear frame 25 front ends are fixedly connected on driven gear 2, and are as shown in the figure; Gear frame is an axle sleeve structure, captives joint with driven gear 2 is coaxial; Driven gear 2 is supported in the transmission shaft of change-speed box through first annular bearing with rolling contact 23, and gear frame 25 rear ends are fixedly connected on the axial inner conical drogue 17 of torus of change-speed box, and are as shown in the figure, is that coaxial fixed connection structure is realized transmission; The axial inner conical drogue cylindrical of the torus of change-speed box is supported in the mission case 3 of change-speed box through second annular bearing with rolling contact 29, in the cavity of the speed change butterfly spring of change-speed box between transmission shaft 1 cylindrical of gear frame 25 and change-speed box a; Simple and compact for structure, globality is strong, reduces the radial dimension of change-speed box greatly; Said transmission shaft 1 is provided with oilway 6 with the shaft part outer round surface of inner ring 31 normal-running fiies of overriding clutch, and high lubricating effect is rotated smooth and easyly, is beneficial to and reduces to rub energy savings.
Above embodiment is an optimum structure of the present invention, is not the qualification to protection domain of the present invention; Such as, some technical characterictics of the transmission fit system of each parts and annexation or the like all can be made corresponding change, and do not influence the realization of this goal of the invention.
The following only transfer route through change-speed box a describes:
The fast shelves power transmission line of present embodiment:
Change-speed box a (the external spiral cam 1a → transmission shaft 1 of the inside spin cam 14a → transmission shaft 1 of the axial external conical sleeve of the axial external conical sleeve 14 → torus of the axial inner conical drogue 17 → torus of power take-off shaft 5 → torus) → universal-joint → diff 27 → trailing wheel d;
This moment, overriding clutch surmounted, and the resistance transfer route: the axial external conical sleeve 14 of inside spin cam 14a → torus of the axial external conical sleeve of external spiral cam 1a → torus of transmission shaft 1 → transmission shaft 1 → compression speed change butterfly spring 28; The external spiral cam 1a of transmission shaft through transmission shaft 1 applies axial force and compresses speed change butterfly spring 28 the inside spin cam 14a and the axial external conical sleeve 14 of torus of the axial external conical sleeve of torus; When resistance to motion is increased to one regularly; This axial force speed change butterfly spring 28; The axial inner conical drogue 17 of torus is separated with the axial external conical sleeve 14 of torus, and power is through following route transmission, promptly slow shelves power transmission line:
The external spiral cam 1a → transmission shaft 1 of the inside spin cam 14a → transmission shaft 1 of outer ring 15 → overriding clutch inner ring 31 of 17 → the first slow grades of gears of the axial inner conical drogue of power take-off shaft 5 → torus 20 → 18 → the second slow grades of gear 19 → overriding clutchs of slow shelves tween drive shaft → axial external conical sleeve of the slow shelves axial external conical sleeve 14 → torus of cam-engaged pair → torus.
Slow shelves power transmission line also passes through following route simultaneously: the axial external conical sleeve 14 of slow shelves cam-engaged pair → torus → compression speed change butterfly spring 28; Prevent to occur in the slow grade transmission process compression speed change butterfly spring 28 toward compound compression, thereby prevent axial external conical sleeve 14 applyings of axial inner conical drogue 17 of torus and torus.
There is above-mentioned transfer route to find out; The present invention is when operation, and the male cone (strobilus masculinus) of the inner conical surface of the axial inner conical drogue 17 of torus and the axial external conical sleeve 14 of torus fits tightly under 28 effects of speed change butterfly spring, forms an automatic transmission that keeps certain pressure; And can adjust the required pressure of clutches engaged through the axial width that increases speed change packing ring 21; Reach the transmission purpose, at this moment, power take-off shaft 5 drives the axial inner conical drogue of torus 17, the axial external conical sleeve 14 of torus; Transmission shaft 1 is clockwise rotated, thereby make diff 27 left-hand revolutions; The slow shelves overriding clutch of two change-speed boxs is in and surmounts state at this moment.
Resistance is greater than propulsive effort during motor vehicle starting, and resistance forces transmission shaft 1 to rotate counterclockwise certain angle, under the effect of the external spiral cam 1a of transmission shaft 1, and the axial external conical sleeve 14 compression speed change butterfly springs 28 of torus; The axial external conical sleeve 14 of torus separates with the axial inner conical drogue 17 of torus; Synchronously; The engagement of slow shelves overriding clutch; The driving motor rotor drives that the axial inner conical drogue of torus 17, first slow grade of gear 20, slow shelves tween drive shaft 18, second slow grade of gear 19, the outer ring 15 of overriding clutch, inner ring 31, slow shelves cam-engaged are secondary, the axial external conical sleeve of torus 14, transmission shaft 1, makes diff 27 with slow shelves speed transmission; Therefore, realize the low gear starting automatically, shortened cranking time, reduced starting power.Meanwhile, speed change butterfly spring 28 absorbs movement resistor moment energy, holds potential energy fully for recovering fast shelves gear transferring power.
After starting successfully; Resistance to motion reduces; When component is reduced to less than the pressure that speed change butterfly spring 28 produced; Discharge promotion rapidly down because of the compression of passive movement resistance produces speed change butterfly spring 28 pressure, accomplish the male cone (strobilus masculinus) of the axial external conical sleeve 14 of torus and the inner conical surface of the axial inner conical drogue 17 of torus and recover the state that fits tightly, the slow shelves overriding clutch of change-speed box is in and surmounts state.
In the driving process,, under the situation that need not cut off propulsive effort, realize shift, make whole locomotive operation steady along with the variation autoshift principle of resistance of motion is the same, safe and low consumption, and also transfer route is oversimplified the raising driving efficiency.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. mechanical intelligence self-adapting automatic gear shift device rear drive assembly, it is characterized in that: comprise the change-speed box and the engine installation that are arranged on the vehicle frame, said engine installation is provided with the rotational power mouth and power is imported change-speed box;
Change-speed box comprises mission case, transmission shaft, slow shelves transmission device and is arranged on the mechanical intelligence adaptive rate assembly on the transmission shaft, said transmission shaft and mission case normal-running fit;
Mechanical intelligence adaptive rate assembly comprises the axial external conical sleeve of torus, the axial inner conical drogue of torus and speed change elastic element;
Circle is the axial conical surface in the axial inner conical drogue of torus, and the axial external conical sleeve cylindrical of torus is the axial conical surface, and the mode that the axial inner conical drogue of torus is worked in coordination with the conical surface is enclosed within the axial external conical sleeve excircle of torus; The axial external conical sleeve of said torus is coated at transmission shaft and interior circle is provided with the inside spin cam, and transmission shaft is provided with the external spiral cam that matches with the inside spin cam and forms the spiral cam pair;
The speed change elastic element applies the predetermincd tension of the inner conical surface applying transmission that makes its male cone (strobilus masculinus) and the axial inner conical drogue of torus to the axial external conical sleeve of torus; During said transmission shaft takeoff output, the spiral prominence wheel set applies the axial component opposite with the elastic element predetermincd tension to the axial external conical sleeve of torus;
Said slow shelves transmission device comprises overriding clutch and intermediate reduction gear transmission device; The inner ring of said overriding clutch surmounts between the takeoff output hand of rotation of transmission shaft and outer ring; The axial inner conical drogue of said torus cooperates with the outer ring transmission of overriding clutch through the intermediate reduction gear transmission device; The inner ring normal-running fit of said overriding clutch is coated at transmission shaft, is passed to the axial external conical sleeve of torus through the slow shelves of slow shelves cam-engaged adjutant power by the inner ring of overriding clutch between the axial external conical sleeve of the inner ring of said overriding clutch and torus;
The axial inner conical drogue of the torus of said change-speed box cooperates in the circumferencial direction transmission with the rotational power output block of engine installation; The transmission shaft of change-speed box is provided with clutch end and is connected with diff backward through universal-joint, and said diff is in transmission connection in vehicle rear wheel.
2. mechanical intelligence self-adapting automatic gear shift device rear drive assembly according to claim 1; It is characterized in that: said overriding clutch is the spring-piece type overriding clutch; Comprise roller and retainer, be formed for the engaging groove that meshes or separate with roller between the outer ring of overriding clutch and the inner ring; Said retainer comprises supporting blade, pillar stiffener and reed; Said pillar stiffener is corresponding one by one with roller; Said supporting blade is arranged at pillar stiffener and between supporting blade and pillar stiffener outside face, forms slot in the circumferencial direction heavy keying fit; Said reed is provided with the fitting portion that embeds slot, and reed extends slot and along the engagement direction of engaging groove roller applied predetermincd tension, and said slot is provided with reed owing to roller applied the distortion allowance of elastic deformation that predetermincd tension produces.
3. mechanical intelligence self-adapting automatic gear shift device rear drive assembly according to claim 2; It is characterized in that: said fitting portion is provided with pressure-bearing portion, and said supporting blade is provided with pressure-bearing portion applied and makes fitting portion embed the pressure of slot and limit fitting portion from pressing portion that slot is deviate from.
4. mechanical intelligence self-adapting automatic gear shift device rear drive assembly according to claim 3; It is characterized in that: said pressure-bearing portion is formed in one in fitting portion and outward extending elastic piece structure; Pressure-bearing portion forms the pressure-bearing section to pressing portion bending, and pressing portion forms superimposed in pressure-bearing section outside face and pressing section that the pressure-bearing section is exerted pressure to the bending of pressure-bearing portion.
5. mechanical intelligence self-adapting automatic gear shift device rear drive assembly according to claim 4; It is characterized in that: said intermediate reduction gear transmission device comprises slow shelves tween drive shaft, is arranged at first slow grade of gear and second slow grade of gear that slow shelves tween drive shaft cooperates with its transmission; The axial inner conical drogue of said torus be provided with external toothing and with first slow grade of meshed transmission gear, the outer ring engaged transmission of second slow grade of gear and overriding clutch.
6. mechanical intelligence self-adapting automatic gear shift device rear drive assembly according to claim 5; It is characterized in that: said speed change elastic element is the speed change butterfly spring that is coated at transmission shaft; The inner ring of said speed change butterfly spring and overriding clutch is respectively in the axial both sides of the axial external conical sleeve of torus; Speed change butterfly spring withstands axial external conical sleeve one axial end portion of torus through the speed change packing ring that bearing fit is coated at transmission shaft, and another axial end portion of the axial external conical sleeve of torus cooperates through the edge type strainer auxiliary driving with the inner ring of overriding clutch.
7. mechanical intelligence self-adapting automatic gear shift device rear drive assembly according to claim 6; It is characterized in that: said engine installation is a motor; Said motor housing is integrated in the mission case of change-speed box, and the power take-off shaft normal-running fit of motor extends into the mission case of change-speed box and cooperates in the circumferencial direction transmission through speed reducing gear pair with the axial inner conical drogue of the torus of change-speed box.
8. mechanical intelligence self-adapting automatic gear shift device rear drive assembly according to claim 7, it is characterized in that: said speed change butterfly spring is arranged on the front side of the axial external conical sleeve of torus, and overriding clutch is positioned at the axial external conical sleeve rear side of torus; The expansion direction of the inside spin cam of the axial external conical sleeve of said torus and the external spiral cam of transmission shaft is opposite with transmission shaft takeoff output hand of rotation after by forward direction; The axial external conical sleeve of the inner ring of said overriding clutch and torus is provided with edge type strainer respectively and intermeshes through edge type strainer that to form slow shelves cam-engaged secondary; The edge type strainer pressure line expansion direction of the inner ring of overriding clutch and the axial external conical sleeve of torus is identical with transmission shaft takeoff output hand of rotation after by forward direction.
9. mechanical intelligence self-adapting automatic gear shift device rear drive assembly according to claim 8; It is characterized in that: the driven gear of said speed reducing gear pair cooperates with the axial inner conical drogue transmission of the torus of change-speed box through gear frame; Said gear frame front end is fixedly connected on driven gear; Driven gear is supported in the transmission shaft of change-speed box through first annular bearing with rolling contact; The gear frame rear end is fixedly connected on the axial inner conical drogue of torus of change-speed box, and the axial inner conical drogue cylindrical of the torus of change-speed box is supported in the mission case of change-speed box through second annular bearing with rolling contact, in the cavity of speed change butterfly spring between the transmission shaft cylindrical of gear frame and change-speed box of change-speed box.
10. mechanical intelligence self-adapting automatic gear shift device rear drive assembly according to claim 9, it is characterized in that: the shaft part outer round surface of the inner ring normal-running fit of said transmission shaft and overriding clutch is provided with oilway.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100278272A CN102582424A (en) | 2012-02-08 | 2012-02-08 | Rear drive assembly of mechanical intelligent self-adaptive automatic gearbox |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100278272A CN102582424A (en) | 2012-02-08 | 2012-02-08 | Rear drive assembly of mechanical intelligent self-adaptive automatic gearbox |
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| CN102582424A true CN102582424A (en) | 2012-07-18 |
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Application publication date: 20120718 |