Continuously variable transmission, reverse mechanism, variator, and gear ratio controller

FIELD: mechanical engineering.

SUBSTANCE: continuously variable transmission comprises housing, input and output shafts, reverse mechanism and multi-disk planet variator provided with planet reduction gear, which define a variator. The solar pinion of the reduction gear is fit on the output shaft with interference and its epicycle is secured to the housing of the transmission. The variator has epicycle mounted in the housing of the transmission and made of a stack of disks and solar pinion made of a disk stack mounted on the output shaft of the variator connected with the output shaft of the reverse mechanism. The carrier of the variator is connected with the carrier of the planet reduction gear and consists of two disks interconnected by means of tension bolts. The disks of the carrier have shaped slots the number of which is equal to the number of axles mounted in the shaped slots for permitting change of position and interaction with the disks of the solar pinion and epicycle. The gear ration controller is build in the carrier of the variator. The planet reduction gear, planet multi-disk variator, and reverse mechanism are axially aligned.

EFFECT: prolonged service life and expanded functional capabilities.

18 cl, 8 dwg

 

Group of inventions relates to the field of engineering and applies variable transmission vehicles with friction variator and its parts - reversing mechanism, the module of variation and managed limiter range of gear ratios.

Existing automatic transmission vehicles are mainly hydraulic and have a very low efficiency. Mechanical transmission are not automatically have gap power flux leading to the bridge at the time of gear change and create greater mental load on the driver (especially in city traffic).

Both shortcomings are free transmission, built using a multi-disc friction of the variator. The best characteristics among variable-speed drives for this application have a multi-planetary friction variable-speed drives.

The prior art adaptive continuously variable transmission (patent of Russia RU 2138710 C1)containing input and output shafts, adaptive disk planetary friction variable-speed drive mechanism for changing the stiffness characteristics. Planetary friction variable-speed drive can be multi (patent of Russia RU 2140028 C1).

Given the analogs have a number of disadvantages: the inability to directly control predation the m number the low reliability of the springs or great power to create a clip using the media under pressure, the components of the variator to ensure reversal, which unnecessarily increases the size of the structure and its complexity in General, the complexity and unreliability of the adaptation mechanism, the inability to use together with high-frequency internal combustion engine.

So the gear ratio of the variator according to EN 2140028 can be either greater than 1 (reduction) or less (mode multiplicitive), and the extreme dependence of the gear ratio range asymptotically tends to 1, the variator never in normal operating conditions may not provide the "straight path", which is so necessary to hire. The gear ratio is 1 possible or when jamming of the internal friction pair, or if it is jammed drove relatively rolling epicycle. In such cases, crashes wear of the rolling bodies, with the inclusion of a forward stroke occurs jerk, which is not desirable for vehicles.

The adaptation mechanism in this variable is used to modify the stiffness of the variator, and not to limit the range of gear ratios, so nothing will prevent the car from slipping on ice or other road conditions with low traction wheels with the road surface regardless of the stiffness variato the A.

Known continuously variable transmission (patent of Russia RU 2166138 C2), comprising a housing, input and output shafts, planetary gear, multi-disc planetary variator and the mechanism of regulation. This construction has the following drawbacks:

- lack of adaptability, lack of reliability /Summation of two power flow, moving at different speeds will cause premature wear of contact spots. Especially this disadvantage will wear out the disks in the transmission "neutral" and "reverse"when one power flow must be stopped by another thread to a complete stop of the output shaft (position "neutral"), or when the output shaft must start its movement in the opposite direction of the input shaft (position "reverse")/;

- lack of power /poor total area of spots contacts in friction disks on the specific volume of the variator, even when the contact force of the friction discs 1500 MPa/.

The closest analogue is a continuously variable transmission (patent USSR SU 1504108 A1)containing the input and output shafts, two multi-disc friction variable-speed drive, the control mechanism variator mechanism of reversal. But this analogue has a number of disadvantages: lack of adaptability, the use of two variable-speed drives, the complexity of their connections, nelion is here the input and output shafts, insufficient transmission capacity.

Comparative analysis with the last of the analogues leads to the conclusion that a continuously variable transmission, comprising the module of variation and reversing mechanism, allows to increase the control range of the gear ratio, direct and reverse synchronized transmission, and, in addition, the application module variation with composition of the planetary gear and managed limiter range of gear ratios, allows to significantly simplify the design of the transmission, which significantly improve the reliability and to reduce its size.

The closest analogue of the reversing mechanism is a technical solution, known of as of the USSR №502158, publ. 1973. Known mechanism - reverse planetary gear has the ability to reverse rotation. The disadvantage of this device is the use of 2 coupling devices, which are known to be the most heavily worn when switching. In addition, this device is a single stage that does not allow you to seamlessly place the synchronizer between the two stages, the "inside" of the gearbox.

The closest analogue module variation is a technical solution known from the patent RU 2140028 C1, publ. 1999/. Known multi-planetary variate which contains the input and output shafts, the Central outer and inner friction discs, intermediate friction discs.

Disadvantages closest analogue is the following.

- the inability to work with high frequency motors due to the high value of the centrifugal force F=m·a; due to the fact that the centrifugal acceleration is proportional to the square of the rotation frequency and=ω2r, i.e. for a motor with a speed up to 6000 rpm=100 rpm=628 rad/s and acceptable for gearboxes diameters of the positions of the centers of the axes of the satellites of up to 120 mm will be a=6282·0,15=6·104m/s, and for one axis satellites 6-7-row variable, which has a mass of not less than 2.5 kg, the centrifugal force is 150 kN. The obvious impossibility of implementation of the scheme, as at present there is not enough compact bearings capable of withstanding this load at least an hour. Thus, one should not forget also about torque, giving an additional load on the bearings, and high contact stresses in the contact, making use of particularly high-strength materials. In particular, the above example (6-row variable with not less than 6 axes satellites) suggests using as the material of the rolling elements Maraging steel due to the need to ensure resource 3000 hours (300 thousand kilometers and it is for the engine only 110 kW. Thus, to date, there are no materials that give the opportunity to realize automatic continuously variable mechanical gear box for high frequency motors on the basis of the schemes proposed Nwhole. As a result of such estimates have been made calculations showing that the optimal progressive transmission is a mode of operation in which the centrifugal force is close to the forces from the torque generated in the bearings of the satellite axes, in the extreme modes, preferably the smallest difference values of these forces. When this condition is the ratio of the load on the bearings to transmit power minimum.

- control the speed of the vehicle with the pedal "pseudoacceleration"not associated with the throttle of the engine, and mechanism of changes in the stiffness of the variator. While the vehicle is running at its highest efficiency, and for a powerful, compact, consequently, high-frequency internal combustion engine means constant work at high speeds, which is not justified. Additionally, the scheme assumes the availability of high-capacity flywheel energy storage developed by the same author and to this day still have not found the mass, or at least serial automotive applications.

schema changes softness characteristics of the variator quite the false and generally speaking, it is not necessary for the variator. In other words, the driver to date, easier to drive, changing the engine speed in accordance with the current needs and spending as much fuel as is required for movement at a particular moment, than by controlling the stiffness of the mechanism of variation. In addition, the transition to new methods of control power unit, in which there is no rigid connection between the engine and the propeller will be possible only after a sufficient spread infinitely types of transmission. But when this control method speed control movement rigidity of the transmission without limiting turnovers is unacceptable because it leads to an emergency in the flow of vehicles.

- the use of such a complex device for regulating such malancha magnitude as the contact pressure is unacceptable, greatly reduces the reliability of the device as a whole. This is due to the fact that the schemes of the author of the prototype of the failure of any of the elastic element causes failure of the entire unit (in the case of the car, with subsequent inability to reach the service station). This is especially compounded by the fact that the disc and the flat disc springs, which relies on the author's prototype, although obladaet very attractive characteristics, have a very low share of 104cycles, which limits their use drives with high inertia and rare changes in speed. Use the same media under pressure to hold down, though, and allows you to get efficiency, higher by a few percent, but the economic benefit fully absorbed by the device to create the desired pressure.

- gear ratio can be either greater than 1 (reduction) or less than 1 (mode multiplicitive), while the dependence of extreme gear ratios range from internal features of the variator, and ultimately, from the conditions of use, asymptotically tends to 1, the variator never in normal operating conditions may not provide the "straight path", which is so necessary to hire. The gear ratio is 1 possible or when jamming of the internal friction pair, or if it is jammed drove relatively rolling epicycle. In such cases, emergency occurs or wear of the rolling elements for the first case, or design, providing, first, the movable epicycle that undesirable as overly complicates the size, weight and cost of the node, the second locking mechanism, which operates at the big difference of angular velocities, and therefore prone to severe wear, and the inclusion of a forward stroke of origin Taiwan is the CIO jerk, what is undesirable for vehicles.

When searching for analogues of the proposed managed limiter range of gear ratios is not revealed. Some similarity can be considered as an adaptation mechanism, which is part of the variator, patent of Russia RU 2140028 C1 from 26.05.92,"Multi-planetary variator". But the adaptation mechanism is used to modify the stiffness of the variator, and not to limit the range of gear ratios. In the particular case when applying frictional planetary variator in a continuously variable transmission of a vehicle with variable stiffness of the variator nothing prevents car skidding on ice or other road conditions with low traction wheels with the road surface regardless of the stiffness of the variator. Because in this mode the load is small due to slipping, and therefore, the optimal regime of the variator will work on the highest gear relations, seeking to 0. In other words, the wheel of the car start to stall - variable will increase the frequency of rotation. When this clutch wheel with the road surface and will not come. An emergency situation is obvious. But the CVT tends to the optimal mode. This means that the optimal mode of the variator does not correspond to the optimal driving conditions at low CoE is viciente the grip, and this mismatch does not practically depend on the stiffness characteristics of the variation.

The objective of the proposed group of inventions is: improving the durability, efficiency, reliability, resource expansion kinematic features variable transmission as a whole and its individual parts, as well as obtaining a continuous range of gear ratios of the transmission and the provision of a switching regulator without breaking the flow of power.

The solution to this problem is achieved in that the continuously variable transmission, comprising a housing of the transmission, the input and output shafts, the friction variable-speed drive and reversing mechanism, equipped with a planetary gear, a sun gear which is pressed onto the input shaft, his epicycle attached to the housing of the transmission, the friction variator made planetary multi-plate, formed with a planetary gear module variation and includes mounted in the housing of the transmission apical made in the form of a stack of disks with inner touch, a sun gear, made in the form of a stack of disks with external tap placed on the output shaft of the module of variation that is connected to the input shaft of the reversing mechanism, drove connected with the planet carrier of the planetary gear unit and consisting of two disks connected by tie bolts, axles placed on them satelli the AMI in the form of intermediate disks, disks were taken have figured slots on the number of axles, and axle installed in curved slots with the possibility of changing the position and interaction of the intermediate disk drives sun gear and epicycle, springs for pressing each other drives the sun gear and epitsiklov and managed limiter range of gear ratios, while the planetary gear, the planetary multi-variable and reversing mechanism coaxially to each other.

In particular, the axis can be installed in curved slots of the disks by means of bearings, drives, packages can be made thick, the springs can be made of screw and inserted in the holes of the thick-disk, and at least two of the clamping bolt carrier of the planetary multi-disk variator must be hollow.

Thus, differences related to the fact that in addition to multi-planetary variator added planetary gear, drove the CVT is built organically managed limiters range of gear ratios, and the output of the mechanism of reversal, allow to extend the control range of the gear ratio, to obtain an inherent characteristic of adaptability, direct and synchronized reverse gear and neutral and to improve the reliability Bess is opencity transmission.

The task is also solved by a description of how the individual parts of the continuously variable transmission.

Feature of the reversing mechanism, comprising a housing, input and output shaft, reverse gear and the clutch is the fact that reverse gear is made of a two-stage, multi-threaded, mixed gearing, a sun gear of which the first gear clutch mounted on the input shaft, intermediate shaft with two toothed crowns fixed in the housing, a Central gear with a ring gear of a clutch mounted on the output shaft for rotation, the synchronizer hub is fixed to the output shaft, the clutch synchronizer mounted on the synchronizer hub with the possibility of axial movement, while the output and output shafts are interconnected by means the spherical bearing.

The proposed mechanism of reversal, on the basis of two-stage gearbox mixed gearing, can be used in connection shafts instead of needle roller bearings spherical ball bearings due to their low load. The latter allow for relative misalignment of the shafts without damaging the structure. Provided the connection shaft-in-shaft. The use of two-stage gearbox allows p is to change any fine-grained backlash-free gear. It greatly reduces the noise level and has a very low wear of the tooth module and, as a consequence, leads to an increase of operational reliability of two-stage gearbox. The use of such design allows you to place a synchronized inclusion of both direct and reverse transmission. Thus, the mechanism of reversal remains very compact in comparison with analogues. Provided the possibility of any (valid for two-stage gear) gear ratio reverse gear.

Feature of module variations, containing the input and output shafts are coaxial planetary gearbox and multi-plate friction variable, is the fact that the sun gear of the planetary gear pressed onto the input shaft, his epicycle fixed to the body chassis, multi-disc friction variator made planetary, his epicycle made in the form of a stack of disks with inner touch, the sun gear is made in the form of a stack of disks with external touch and placed on the output shaft of the module of variation, drove connected with the planet carrier of the planetary gear unit and consists of two discs connected by tie bolts, and having installed the drive through bearing supports with the ability changing the position of the axis placed on them by the satellites in the form of intermediate disco is, having interaction drives the sun gear and epicycle, springs for pressing each other drives the sun gear and epitsiklov, and upravlyaemyi limiter range of gear ratios.

The module variation with composition of the multi-planetary gear and the planetary gear mounted on the input shaft of the variator, allows you to extend the control range of the gear ratio, more than 10 times to reduce the load on the bearings. The original design of the connection reducer and variator significantly reduces the dimensions. Installing twisted springs, the resource of which more than 106of loading cycles (1 cycle of loading is one acceleration plus one braking), instead of a disc or flat, the resource of which less than 104of loading cycles (the difference between the resources is 999000 loading cycles), significantly increases the reliability of the site. This design gives the module of variation inherent adaptability. The resulting module variation has a gear ratio 4.17-0.81. To the resulting module is added to the reversing mechanism, constructed as a two-stage multi-threaded reducer mixed engagement with synchronizers enable direct and reverse moves. Site variation is joined to its output shaft with the input shaft of the mechanism roar is retromania. On the output shaft of the reversing mechanism on the spline connection attached standard cardan transmission.

Managed limiter range of gear ratios consists of a lever fixed to the disc carrier of the planetary multi-disk variator, two stops, each of which is mounted for movement in curly groove disk drove, and associated with the lever of the hydraulic cylinder with the working fluid. In particular, the working fluid moves between the discs drove through the hollow coupling bolts. As the working fluid can be used oil designed for the lubrication of the transmission. The limiter can be equipped with inductive position sensor lever.

The proposed limiter gear ratios directly restricts the ranges of gear ratios the highest value that does not allow the wheel to maximum speed with a bad grip the wheel with the road surface and begin to stall.

The proposed group of inventions is illustrated in figure 1-8.

Figure 1 shows a schematic diagram of a continuously variable transmission; figure 2, 3 - controlled limiter range of gear ratios; figure 4 is a General view of the continuously variable transmission; figure 5 - schematic diagram of variation of the module; figure 6 is a General view of the variations is ornago module; figure 7 - schematic diagram of the reversing mechanism; Fig - General view of the reversing mechanism.

Continuously variable transmission includes an input 1 and output shafts 23. Planetary gear includes a sun gear 3, which is pressed onto the input shaft 1, apical 5, which is fixed on the housing of the transmission, and drove 6 with three satellites 4.

Planetary friction disc multi-variable form with a planetary gear module variation. Variable contains mounted in the housing of the transmission apical made in the form of a disk stack 12 with the inner touch, a sun gear, made in the form of a stack of disks 13 with external tap placed on the output shaft 2 of the module of variation. Drove 7 variator is connected to the planet carrier 6 of the planetary gear unit and consists of two discs connected by tie bolts. Two of the clamping bolt of the six made hollow. Disks were taken 7 variator have figured slots 8. Each disc six curved slots 8 for the number of axes 10 of 11 satellites of the variator. Axis 10 of 11 satellites by means of bearings 9 mounted for changing the position in figure slits 8. Satellites 11 made in the form of intermediate discs pressed on the axle carrier 7, and interact with the disks 13, 12 sun gear and epicycle. The disks 12 and 13 packages made is thick-walled and have holes for installation of the springs 14. The spring 14 is screw. Each spring creates a force pressing two friction disk arranged in pairs.

Drove 6, 7 of the planetary gearbox and multi-plate friction variator is made in a single piece, which significantly reduces the size.

The output shaft 2 of the module is connected to the input shaft 15 of the reversing mechanism.

Managed the limiter is a lever 24, is fixed inside the disk carrier 7 with a finger 25 and provided with a stop 26 of this form, so that at any position of the lever 24, the stop 26 organically complementary shaped groove 8 of the disk carrier 7, which moves the bearing support 9 axles 10 of 11 satellites. The last element of the mechanism is a single chamber of the hydraulic cylinder 27. The working fluid for the hydraulic cylinder is oil for lubrication of the variator. To control the hydraulic supply and discharge of oil can be used any spool and/or valve system can control up to 20 MPa. On the second disk of the variator 7 oil is served by two hollow of the six coupling bolts (four screws - solid). For feedback, it is preferable to use a sensor of the position of the lever. The principle of the lever - induction. The power supply and the removal of the signal can be accomplished through a sliding contact brush type.

The reversing mechanism includes an input 15 vyhodnoi shaft 23, the reversing gearbox and clutch. Reverse gear is made of a two-stage, multi-threaded, mixed gearing. The sun gear 16 of the reversing gear and the first ring gear 20 of the clutch mounted on the input shaft 15. The intermediate shaft reverse gear with two toothed rims 17 fixed in the housing. The Central gear wheel 18 of the reversing gear and the ring gear 21 of a clutch mounted on the output shaft 23 for rotation. The synchronizer hub (not shown) fixed to the output shaft 23. The clutch synchronizer 22 is installed on the synchronizer hub with the possibility of axial movement. Input 15 and output shafts 23 are connected by a spherical bearing 19.

Continuously variable transmission operates as follows.

The rotation from the engine is transmitted to the input shaft 1, on which the sun gear 3 of the input planetary gear. Gear 3 rotates with the shaft 1 causes the movement of the carrier 6 through the satellites 4, apical 5 attached to the housing of the transmission (figure 1). After gearbox the engine speed 800-6000 rpm is reduced to 133-1000 rpm Drove 6 input planetary gear transmits the force cage 7 friction of the variator. Axis 10 of 11 satellites, receiving the force from the carrier 7 tend to occupy such is ulozhenie in shape groove 8, when the satellites 11 are in the equilibrium state. Efforts are 11 satellites from solar disk 13, on which the 11 satellites transmit power, and drives epitsiklov 12. Solar disks 13 and disks epicycle 12 is pressed by a spring 14. Two epicycle disks open springs in the quantity of twelve pieces, two of the solar disk open, so twelve springs. Thus, the frictional contact is provided by provodyaschego friction, the force of the pressure provided by the springs 14, each spring creates a force pressing two friction disk arranged in pairs. The force of spring 1118 N. When this ratio depends on the position of the bearing supports 9 axles 10 of 11 satellites, which, in turn, is determined by the ratio of the centrifugal force and torque.

Thus, the satellite axis tends to occupy the equilibrium position, which at this particular time corresponds to the engine speed and vehicle speed, depending on the vehicle loading, and road conditions. When resting the car the engine is stopped the axis 10 of 11 satellites located at the center of the possible range of ratios defined by the slot 8 in the equilibrium point at zero centrifugal force and the force from the torque.

During the polymerization, at a low cha is the ease with which rotational power from the input shaft torque is greater centrifugal force and moves the axis 10 satellites in figure groove to the center, increasing the gear ratio of the variator up to the maximum required for the moving of the gear ratio, increasing the gear ratio at the same time almost instantly.

During acceleration after getting away, as the vehicle speed decreases resistance to rotation by the output shaft, means decreases torque. The ratio of speed and drove torque varies, the axis 10 of 11 satellites gradually removed from the centre, the gear ratio gradually decreases, seeking equilibrium.

When pressing on the gas pedal to increase the engine speed increases transmission power, but stronger increases torque, causing it to move to the center axis 10 of 11 satellites and thereby increasing the gear ratio. This point is similar to the process of moving. This is followed by processes for acceleration.

When the discharge gas is reduced rotation frequency and transmitted power.

The most used are ratios close to 1. Large gear ratios are used mainly during acceleration, smaller at high speed or very economical modes, and therefore rare. Thus, the most used mode you can put the selection of the number of reducers is almost in the center of the gear ratio Chi is La, where the minimum pinches, and hence, the efficiency is highest. When the speed of the input shaft from 800 to 6000 rpm with engine power up to 118 kW (for example, engines ZMZ 405, 406, 409) gear ratio range of the variator from 4.17 to 0,81.

After the above situation shows that adaptability (adaptability) of the variator automatic and there is no need to control the gear ratio of the variator. If road conditions there is a need to limit the gear ratio, is included controlled limiter range of gear ratios, which is inside the carrier 7.

If necessary, limit the range of gear ratios are in the range from the maximum to the preset you want to apply the oil in the cylinders 27 under pressure. When the cylinder 27 is pushed levers 24 with the stop 26, reducing the range of possible gear ratios. Upon reaching the preset position (sensor) electromagnetic spool valve, authoritively at this pressure, block & oil supply. The cylinder 27 will stop in the position reached. To release the part (or full) range to include other electromagnetic spool valve and open the discharge of oil from the cylinder 27. In this case the centrifugal force acting on the levers 24 and the lugs 26 will force the oil from the cylinders 27 and releases the hour is b (or fully) the range of gear ratios. The position of the levers 24 is monitored by an inductive sensor.

The proposed limiter gear ratios directly restricts the ranges of gear ratios the highest value that does not allow the wheel to maximum speed with a bad grip the wheel with the road and start to slip.

The frequency of rotation of the output shaft 2 of the variator, which is determined by the adaptability of the variator or the selection criteria of the controlled limiter range of the gear ratio, is transmitted to the input shaft 15 of the reversing mechanism. With the inclusion of forward travel clutch synchronizer 22 sliding on the hub of the output shaft 23, which engages with the input shaft 15 through the gear 20. When this rotation from the module of variation is transmitted to the output shaft through a gear coupling, without changing the direction of rotation, speed and torque. When you enable reverse (reverse) stroke is the clutch synchronizer sleeve 22 with a ring gear 21 of the clutch. When this rotation from the module of variation is transmitted through the input shaft 15 and the sun gear 16 on the toothing 17 of the intermediate shaft 17, and from them to the Central gear wheel 18 reverse gear. The direction of rotation of the toothed wheel 18 is opposite to the direction of rotation of the input shaft 15. Predation the f number of the reversing mechanism is equal to 4. In the end, we have: straight turn - ratio of 4.17...0,81 - continuous range of gear ratios without breaking the flow of power; reverse 16,68...2,24 continuous range of gear ratios without breaking the flow of power.

During acceleration after the moving, with increasing vehicle speed, the gear ratio gradually decreases, tending to the smallest when the equilibrium state of the satellite axes (with very good road conditions equal...0,85 0,81).

When you reset the engine speed of the vehicle reduces speed and transmit power and, as a consequence, the transition of the satellite axes to another equilibrium state with the increase of the gear ratio.

1. Continuously variable transmission, containing the input and output shafts, the friction variable-speed drive and reversing mechanism, characterized in that it is equipped with a planetary gear, a sun gear which is fixed on the input shaft, his epicycle attached to the housing of the transmission, the friction variator made planetary multi-plate, formed with a planetary gear module variation and includes mounted in the housing of the transmission apical made in the form of a stack of disks with inner touch, a sun gear, made in the form of a stack of disks with external tap placed on the output shaft of the module of variation, is connected to the CSOs with the input shaft of the reversing mechanism, drove connected with the planet carrier of the planetary gear unit and consisting of two discs connected to each other, the axes placed on them by the satellites in the form of intermediate disks, the disks were taken have figured slots on the number of axles and axle installed in curved slots with the possibility of changing the position and interaction of the intermediate disk drives sun gear and epicycle, springs for pressing each other drives the sun gear and epitsiklov and managed limiter range of gear ratios, while the planetary gear, the planetary multi-variable and reversing mechanism coaxially with each other.

2. Transmission according to claim 1, characterized in that the axis installed in curved slots of the disks by means of bearings.

3. Transmission according to claim 1, characterized in that the disks packet is made thick.

4. Transmission according to claim 1, characterized in that the springs are made of screw and inserted in the holes of the thick-disk.

5. Transmission according to claim 1, characterized in that at least two of the clamping bolt carrier of the planetary multi-disk variator is made hollow.

6. Transmission according to claim 1, characterized in that the controlled limiter range of gear ratios consists of a lever fixed to the disc carrier of the planetary multi-disk variator, two pack is a ditch, each of which is mounted for movement in curly groove of the disk carrier cylinder with the working fluid, which move between the discs drove through the hollow coupling bolts connecting the plates, and a position sensor lever.

7. Transmission according to claim 1, characterized in that the reversing mechanism includes a housing, input and output shaft, reverse gear and the clutch, while the reverse gear is made of a two-stage, multi-threaded, mixed gearing, a sun gear of which the first gear clutch mounted on the input shaft which is connected with the output shaft of the module of variation, the intermediate shaft with two toothed crowns fixed in the housing, a Central gear with a ring gear of a clutch mounted on the output shaft for rotation, the synchronizer hub is fixed to the output shaft, the clutch synchronizer mounted on the synchronizer hub with the possibility of axial movement while the input and output shafts are interconnected by means of a spherical bearing.

8. Transmission according to claim 1, characterized in that the engine can be used high-frequency internal combustion engine.

9. The reversing mechanism, comprising a housing, input and output shaft, reverse gear and the clutch, Otley is audica fact, that reverse gear is made of a two-stage, multi-threaded, mixed gearing, a sun gear of which the first gear clutch mounted on the input shaft, intermediate shaft with two toothed crowns fixed in the housing, a Central gear with a ring gear of a clutch mounted on the output shaft for rotation, the synchronizer hub is fixed to the output shaft, the clutch synchronizer mounted on the synchronizer hub with the possibility of axial movement, and the input and output shafts are interconnected by means of a spherical bearing.

10. The module of variation, containing the input and output shafts are coaxial planetary gearbox and multi-plate friction variator, wherein the sun gear of the planetary gear mounted on the input shaft, his epicycle fixed to the body chassis, multi-disc friction variator made planetary, his epicycle made in the form of a stack of disks with inner touch, the sun gear is made in the form of a stack of disks with external touch and placed on the output shaft of the module of variation, led module variation connected with a planet carrier of the planetary gear unit and consists of two discs connected by tie bolts, and having installed the drives posredstvennyh supports with the ability changing the position of the axis placed on them by the satellites in the form of intermediate disks, having interaction drives the sun gear and epicycle, springs for pressing each other drives the sun gear and epitsiklov and managed limiter range of gear ratios.

11. Module variations of claim 10, wherein the variator disks have figured slots on the number of axes, in which, by means of bearings installed axis.

12. Module variations of claim 10, characterized in that the disks packet is made thick.

13. Module variations of claim 10 or 11, characterized in that the springs are made of screw and inserted in the holes of the thick-disk.

14. Managed limiter range of gear ratios, consisting of a lever fixed to the disc carrier of the planetary multi-disk variator, two stops, each of which is mounted for movement in curly groove of the disk carrier cylinder with the working fluid associated with the lever.

15. The limiter 14, characterized in that the working fluid moves between the discs drove through the hollow coupling bolts.

16. The limiter 14, characterized in that as the working fluid used oil designed for the lubrication of the transmission.

17. The limiter 14, characterized in that it is equipped with a position sensor lever.

18. The limiter 17, ex is different, however, the principle of operation of the position sensor lever - induction.



 

Same patents:

FIELD: transport engineering; vehicle transmissions.

SUBSTANCE: according to invention, gear 14 is secured on primary shaft 3, and gear 13 is secured on first tubular shaft 9 freely fitted on primary shaft 3. Gear rims 21 and 22 are fitted on shafts 3 and 9. Input shaft 2 with hub of three-position shifter sleeve 23 and additional driving shaft 4 are installed coaxially to shaft 3. Two gears 17 and 18 in meshing with gears 19 and 20 of secondary shaft 5 are secured on shaft 4. Gear 19 is fitted on shaft 5. Gear 20 is secured on second tubular shaft 10 freely installed on shaft 5. Gear rims 24 and 25 are secured on shafts 5 and 10. Shaft 6 with hub of two-position shifter sleeve 26 and sun gear 27 of planetary mechanism is installed coaxially to shaft 5. Gear 27 engages through planet pinions 31 with epicyclic wheel 32. Planet pinions 31 are freely fitted on axles of carrier 33. Two gear rims 34 and 35 are arranged on periphery of housing of carrier 33. Shaft 7 of carrier 33 with two position gear rim is arranged coaxially to shaft 5 and shaft 6. Third tubular shaft 11 of housing of epicyclic wheel with gear rim 38 is freely fitted on shaft 7. Output shaft 8 with hub of three-position shifter sleeve 40 is arranged coaxially to shaft 7. Sleeve 40 is movably coupled by guide 41 with two-rim shifter sleeve 42 arranged between gear rim 37 of housing 36 of epicyclic wheel 32 and gear rim 43 of gearbox case provided with two inner gear rims and one outer gear rim.

EFFECT: perfected design owing to reduction of metal usage and complexity.

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FIELD: transport engineering; vehicle transmissions.

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EFFECT: increased range of gear ratios of shaft reduction gear at reduced overall dimensions and metal usage, improved gear shift mechanism of planetary mechanism.

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FIELD: mechanical engineering.

SUBSTANCE: mechanical amplifier comprises power differential (1), comparing differential (30), adjusting differential (2), control differential (36), and two self-braking mechanisms (3) and (4). The input of the power differential (1) is connected with the drive and input of control differential (2). Central wheels (17) and (18) of the power differential are secured to driven links (15) and (16) of the self-braking mechanisms and connected with central wheels (32) and (33) of the comparing differential so that the central wheels of the comparing differential rotate in opposite directions. Driving links (13) and (14) of the self-braking mechanisms are connected with central wheels (19) and (20) of the adjusting differential and central wheels (42) and (43) of the control differential so that the central wheels of the control differential rotate in opposite directions.

EFFECT: enhanced reliability and expanded functional capabilities.

1 dwg

Drive (versions) // 2278309

FIELD: mechanical engineering; devices for control of rotational speed of working member shaft.

SUBSTANCE: proposed drive has unadjustable electric motor, adjustable electric motors, input shaft 1 and output shaft 2, gear trains, differential gear trains formed by two wave gear trains with common wave generator 3 and worm transmissions and differential gear. Worm shafts 11 and 12 are set in rotation from adjustable electric motors. External gear wheels 6 and 7 of wave gear trains are coupled with worms 11 and 12. Internal gear wheels 9 and 10 of wave gear trains are kinematically linked with differential gear wheels 19 and 20 which are connected with output shaft 21 of drive. Two wave gear trains are chain-type in construction and are related as follows: Zch1+Zch2=2Zext; Zch1+Z=Zch2-Z, where Zch1 and Zch2 is number of rollers in chains of first and second wave gear trains; Zext is number of teeth of external gear wheel of wave gear drives thrown into engagement with rollers of chains; 2Z is difference of rollers in chains.

EFFECT: possibility of changing the direction of rotation and rotational speed of shaft of working member in wide range; increased speed of response; enhanced reliability.

5 cl, 3 dwg

FIELD: agricultural engineering; offroad tractor.

SUBSTANCE: invention relates to driving axle with suspension and agricultural tractor with such axle which has central housing with build-in final drives and left-hand and right-hand axle housings suspended by means of upper and lower adjusting arms, with axle-shafts projecting from axle on which wheel-and-tire units are installed. Constant-velocity universal joint is installed between fitted-in final drives and axle-shafts. Said universal joint has pair of journal members and coupling holder radially enclosing driving and driven races of joint, thus minimizing axial length of universal joint providing arrangement of wheels on axle-shafts at width of 1524 mm.

EFFECT: possibility of using driving shaft on tractor-cultivator without changing design of load-bearing frame of standard tractor-cultivator with preservation of performance characteristics of said tractor-cultivator.

39 cl, 15 dwg

FIELD: transport engineering.

SUBSTANCE: proposed wheel has rim of regular shape and center of rotation. To drive the wheel, planetary reduction gear is fitted in wheel rim whose drive gear is planet pinion installed on driving "floating shaft whose axis, taking weight of vehicle applied to wheel, executes complex movement relative to axis of wheel rotation making it possible to: 1) spread projections of axis of rotation (being simultaneously point/line of support) of wheel and point of application of vehicle weight P to wheel on horizontal surface by some distance L; 2) change position of projection of point P on vertical; plane by some height h and provide constantly acting "canting" torque PL on wheel creating effect of eccentric wheel at wheel circumference remaining unchanged and eliminating cyclic loads.

EFFECT: improved cross-country capacity of vehicle, its steerability, efficiency of wheeled propulsor, simplified design.

1 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to drives of all-wheel-drive cross-country vehicles designed for riding along roads and off-road. Proposed two-step planetary transfer case contains upper planetary reduction gear providing two speeds of transfer case, intermediate shaft with gear 5 and lower planetary reduction gear being essentially differential drive for rear and front driving axles. Driving member of upper planetary reduction gear is crown gear 9 stationary connected with drive shaft 8, driven member is carrier 13 and controlled member is central gear 11. Gears of upper planetary reduction gear, driving gear 4, intermediate gear 5 and driven gear 6 and gears of lower differential mechanism are arranged in one row one over the other.

EFFECT: reduced overall dimensions adapted for mounting transfer case on vehicles.

1 dwg

FIELD: mechanical engineering.

SUBSTANCE: gear transmission comprises planetary reduction gear and worm pair which engages the planetary reduction gear. Worm (1) of the worm pair is mounted for permitting rotation and axial movement along the driving shaft of the gear transmission and is kinematically connected with satellite (7) of the planetary reduction gear. Driving shaft (2) carries small central wheel (9) of the planetary reduction gear and kinematically connected with satellite (10) of the planetary reduction gear. Satellite (10) is kinematically connected with worm wheel (3). The axle of wheel (3) freely rotates around carrier (4). The axle of large central wheel (8) of the planetary reduction gear is the driven shaft of the gear transmission.

EFFECT: improved design.

1 dwg

The invention relates to the holonomic transmission with stepless change of torque and can be used in machinery, vehicles, machine tools, and other objects and systems

Transmission // 2237207
The invention relates to vehicles, particularly to transmissions of the self-propelled agricultural machines, equipped with hydrostatic drive

The invention relates to mechanical engineering, in particular to gear reversing mechanism with a variable gear ratio

The invention relates to the field of engineering, namely, converters movement, and can be used in applications that require converting oscillatory movement of the shaft in the rotational with the possibility of reversal, in particular in internal combustion engines

The invention relates to the field of engineering, namely the reversible gear transmission

FIELD: mechanical engineering, particularly continuous transmissions used as wide-range transmission mechanism.

SUBSTANCE: device for power transmission with variable velocity ratio comprises input 21 and output 27 members, leading draft member 7 and disc member 1 rotationally installed in case. Input member 21 transmits rotational moment of at least one leading draft member 7. Disc member 1 is coaxial to rotary shaft 2 brought into drive connection with at least one leading draft member 7 and is formed as driven member. Disc member 1 may be selectively moved in axial direction along rotary shaft 2 to change position of disc member 1 relative at least one leading draft member 7 to selectively change draft velocity ratio between leading draft member 7 and disc member 1. Output member 27 is displaced by rotary shaft 2 and is selectively brought into engagement with it to transmit rotational moment under determined velocity ratio relative input member 21.

EFFECT: extended velocity range.

27 cl, 4 dwg

Transformer torque // 2188973

The invention relates to the field of engineering

The invention relates to the field of engineering

The invention relates to the field of mechanical engineering

Transformer moment // 2160400
The invention relates to the field of engineering

The invention relates to mechanical engineering and can be used in particular for a continuously variable transmission of a vehicle

The invention relates to mechanical engineering and can be used particularly in motor-variators
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