Wheeled vehicle recuperative reversible stepless hydraulic transmission

FIELD: mechanical engineering; vehicle hydraulic drives.

SUBSTANCE: proposed recuperative reversible stepless hydraulic transmission of wheeled vehicle contains drive engine 5, recuperator 20 with overrunning clutch 24, controllable reversible hydraulic machine 18 with pressure and suction and control plunger 8 communicating with hydraulic control system through pipelines, follow-up hydraulic booster with variable-capacity pump 12 of reverse capacity, four non-controllable hydraulic machines 29-32. Each of said hydraulic machines has vehicle wheel, and wheels of vehicle are in contact with road pavement. Recuperator 20 is made in form of planetary reduction gear whose carrier 19 is connected with pump 12 and with hydraulic machine 18 provided with two diametric pressure and two diametric suction spaces and connected with hydraulic machines 29-32 by pipelines. Hydraulic machine 18 contains "floating" plunger 33 with two cylindrical grooves between two end face spaces and "polar" plunger by channels of which end face spaces of floating plunger 33 are communicated, overlapped or reversed with pressure and suction spaces of hydraulic machine 18. Cylindrical grooves of floating plunger 33 synchronously overlap or hydraulically communicate two pressure and two suction spaces of hydraulic machine 18. Lever 6 of polar plunger is mechanically connected with corresponding slot of plate 3 of vehicle speed and reverse control member.

EFFECT: reduced number of control members, dispensing with brake system improved cross-country capacity of vehicle, reduced fuel consumption, reduced acceleration time, increased efficiency.

5 cl, 11 dwg

 

The invention relates to hydraulic engineering and can be used in the transmission of wheeled transport.

A device of the transmission wheel vehicle in which power of a drive motor via the clutch, gearbox and differential acts on the rear or front wheels, or the gearbox is supplied to the center differential and limited-slip differentials front and rear wheels of the vehicle. Also known braking system of a wheeled machine, which, acting simultaneously in the brake drums or wheels, provides a stop (braking) of the vehicle. [1]

A disadvantage of the known device, transmissions and braking wheel of the machine is the complexity of the transmission, control and braking systems, which also have their drawbacks. The disadvantages include a step change of torque coming from the engine to the wheels when using manual transmission. Differential reduces the permeability of the wheeled vehicle, as one slip of the drive wheels do not machine provides the necessary acceleration, especially in the beginning of the movement and acceleration.

To eliminate this drawback, the differential is supplied with a lock, which included an additional control. To control the speed of vehicles is necessary: pedal clutch drive motor with the transmission, the lever transmission, the accelerator pedal for the engine control and the brake pedal. In addition, the machine includes a brake lever. To control the speed of the machine must be synchronized with operation of the pedals and levers: the clutch pedal - shift lever - the gas pedal, the gas pedal - brake pedal - clutch pedal - shift lever - brake lever. All these switching complicate the operation of the machine.

The existing braking system of a wheeled machine based on the synchronous stop all wheels on the road surface by creating friction between the surface of the drum or disc and friction material brake pads, which in turn are due to this wear. The transfer of force to the brake pads in the car provided is usually using a hydraulic actuator, consisting of a main brake cylinder, an additional pressure regulator to the rear wheels and the Executive cylinders on each wheel. In addition, a sufficient efficiency of the braking system is achieved only when the engine is running due to the vacuum booster, greatly increasing the pressure in the brake system, when pressing on the brake pedal. Such a system requires constant technical control over themselves. PR is an existing way of braking the kinetic energy of the vehicle is transferred into heat energy by friction of the brake pads. Eventually there is a loss of fuel that will need the car for the subsequent acceleration and acquire kinetic energy. Moreover, to accelerate the car used a forced mode engine having a more negative impact on the environment than conventional operating modes of the engine.

A device of the automatic transmission with torque Converter and the transmission of power to the differential wheels. Control the speed of the machine is carried out by the pedal operation of the motor and the brake pedal, thus to increase or decrease the speed of the machine participates mode of the engine, torque Converter and automatic transmission, and the truck is braking the wheels.

Automatic transmission with torque Converter facilitates the work of the driver, driving two pedals, provides the required speed of movement of the machine and its stop.

A disadvantage of the known device with torque Converter is the complexity of the automatic gearbox, one slip of the drive wheels through the differential degrades throughput of the machine, the braking action is a separate system with the corresponding loss of kinetic energy.

Get rid of the greater part of the above disadvantages of transmissions and brake systems of the Fatherland, the public and foreign cars can be achieved through a comprehensive approach to the problem, if you try to combine individual units and systems in the chain from the engine to the wheels in a single regenerative reversing the hydraulic transmission.

A prototype of the proposed hidrotransmisia wheeled vehicle is regenerative hydraulic transmission, which contains an adjustable hydraulic machines, connected by pipelines with fixed hydraulic machines, as well as through check valves with supply pump. The drive motor through the overrunning clutch associated with the flywheel of the recuperator and the shaft adjustable hydraulic machines and hydraulic control adjustable hydraulic machine is connected to the control valve of the power hydraulic transmission and the supply pump. [3]

A disadvantage of the known regenerative hydraulic hydraulic transmission, adopted for the prototype, is that a known hydraulic system does not solve the task, as the control of an adjustable hydraulic machine does not provide energy recuperation on the flywheel. When reducing the load on the shaft unregulated hydraulic machines (for example, when the descent of the machine from the mountain), its shaft is accelerated and, consequently, unregulated hydraulic machines reduces the pressure in the pipeline. Under certain circumstances (when descending steep mountains) the polarity of the pressure in the piping of the hydraulic transmission is reversed. As the pressure in the pipeline headrope is Adachi balances the movement of the hydraulic cylinder control mechanism adjustable hydraulic machines, at the time of reducing the pressure in the hydraulic transmission pipeline feeding the pump will move the hydraulic control mechanism of the adjustable hydraulic machine in the direction of increasing its productivity, so that the shaft is adjustable hydraulic machines not accelerates, and the flywheel of the heat exchanger does not accumulate energy. In addition, the connection between the pressure and suction cavities the adjustable hydraulic machine does not stop the rotation speed of the shaft unregulated hydraulic machines, as per unregulated hydraulic machines (Fig. not shown) is kinematically connected to the wheels of the vehicle. The connection of the pressure and suction cavities unregulated hydraulic machines does not generate the braking torque to the wheels during movement of the machine. In this case, stop the machine only possible wheel brakes without accumulation of the energy of motion of the machine recuperator. In addition, the lack of heat exchanger prototype is manifested in the fact that the heat exchanger does not provide the summation of the torque of the flywheel twin-torque drive motor. Summing torques involves transmission from the flywheel of the recuperator and a drive motor at the same time, i.e. simultaneously. In the prototype, the torque is transmitted first with the flywheel of the heat exchanger, and then the overrunning clutch connects the drive motor. Recuperocredito has a low efficiency as the frequency of rotation of the heat exchanger may not be less than the rotation speed of the drive motor.

The technical problem on which the invention is directed, is to facilitate the work of the driver by applying the servo steering, stepless change speed and reverse movement of the machine, reducing the number of controls, the elimination of the braking system, to increase the patency of the machine by automatically switching the wheels blocked or differential relationship with the road, reducing fuel consumption and emissions of the engine (internal combustion engine) by means of automatic energy storage braking the flywheel of the heat exchanger and automatic return of energy from the flywheel of the recuperator to the wheels during acceleration and movement of the machine, to reduce the acceleration time by automatically summation of torque from the drive engine and flywheel recuperator to improve the efficiency of the recuperator by returning energy from the flywheel to a full stop, as well as in preserving the regime towing, driving, cornering and coasting, reducing time and money on maintenance, repair and manufacturing of the machine.

The essence of the technical solutions is that regenerative reverse infinitely variable is hidrotransmisia wheeled vehicle, containing the drive motor, the heat exchanger with overrunning clutch, adjustable reversible hydraulic machines with pressure and suction cavity and a plunger management, communicated with the hydraulic control system, the pipeline according to the invention is hidrotransmisia equipped with servo-steering with adjustable reversible pump performance, four unregulated hydraulic machines, each of which has a wheel of the machine, and the wheels of the machine are connected with the road, the exchanger is made in the form of a planetary gear carrier which is connected to the adjustable reversible pump performance and adjustable reversible hydraulic machines having two diametrically-pressure and two diametrically-suction cavity and connected by pipelines with fixed hydraulic machines, except also, adjustable reversible hydraulic machines equipped with a "floating" piston with two cylindrical grooves between two end cavities, and is equipped with a "polar" plunger, channels which are hydraulically communicated, blocked or reversed end cavity of the floating plunger with pressure and suction cavities adjustable reversible hydraulic machines, with cylindrical grooves floating plunger simultaneously closed or hydraulically communicated to the two pressure and two su is to define the cavity of the adjustable hydraulic machine, as the lever polar plunger mechanically connected with the corresponding groove of the plate body speed control and reverse the machine.

Witness the power steering made circuit, where the first path has a plunger control, which is connected with the corresponding groove of the plate speed control and reverse the machine, and the cavity of the plunger control hydraulically communicated with the cavities witness plunger adjustable power steering pump and with the cavities of the plunger feedback, and with a by-pass valve, with bypass valve is made with one cylindrical groove, has an individual foot pedal and return spring, and the second loop servo steering diametrically opposite cavities adjustable reversible pump performance reported pipe with two end cavities of the Executive plunger adjustable hydraulic machines of hidrotransmisia, Executive plunger of the second circuit mechanically rigidly connected to the plunger feedback first loop servo steering. Body speed control, stop and reverse the movement of the machine made double pedal with spring return to middle position pedal mechanically connected to a control element in the form of a plate mounted with the possibility of p is motion, with three grooves which are connected to the lever control mode of a drive motor, a plunger control servo steering and lever polar plunger adjustable hydraulic machines, while the groove of the lever mode of the engine is made by a radius centered on the middle line of the plate, the groove of the plunger control servo steering made versatile with radii of the inflection point on the centerline of the plate and the groove of the lever polar plunger carried out by three rectilinear grooves with various offset from the middle groove of "polar" of the plunger.

The Central gear of the planetary gear-recuperator connected to the shaft of a drive motor, drove satellites - with adjustable hydraulic pump servo steering and adjustable hydromachines hidrotransmisia, and a crown gear connected to the flywheel, and the flywheel is equipped with overrunning clutch and mounted in a horizontal position.

Hidrotransmisia equipped with a two-position plunger with four cylindrical drillings, through which the pressure and suction cavity adjustable hydraulic machines communicated with each other or blocked off by the plunger, while a two-position plunger has an individual foot control with spring return.

In witness steering and adjustable hydraulic machines used gear is the first pump adjustable reversible performance in a hermetically sealed enclosure which driven gear is made with the teeth of the internal gear and connected with four driving gears mounted in cylindrical bores of the inner casing, is made in three sections, rigidly interconnected, with end cap and the pump housing, with a pair of diametrically opposite gears shifted along the axis and diametrically 90 degrees to align the pressure and suction cavities pinion gear and ring gear installed in a partition on the internal housing and kinematically connected to the transfer mechanism, made in the form of two-way plunger placed in the cylindrical bore of the housing of the hydraulic management. The pump has two diametrically-pressure and two diametrically-suction cavity, provides an adjustable fluid flow from zero to maximum and reverse. The governing body of the hydraulic machine is not experiencing static force from the pressure of the working fluid in the pressure and suction cavities of the pump. In the center of the graphics image adjustable reversible pump performance set point to the axis of rotation of regulation. The average position of the arrow relative to the cavities corresponds to zero performance pump - fluid flow in pipelines is missing. The offset of the arrow is regulirovaniya axis to two diametrically cavities - the pump creates pressure in the respective conduits and out of these cavities is pumped working fluid. The rotation regulation on the axis to the middle position reduces the flow of working fluid simultaneously in all the lines up to zero performance. The rotation regulation on the axis to the other diametrically of the cavity - pump reverses the flow of the working fluid from these cavities [2].

The essence of the invention is illustrated by drawings:

Figure 1 shows a diagram of hidrotransmisia: servo steering, planetary gearbox-recuperator and hydraulic transmission;

Figure 2 - gear adjustable reversible hydraulic machines performance with "floating" and "polar" plungers;

Figure 3 - section a-a figure 2;

Figure 4 - cross-section B-B figure 2;

Figure 5 - section b In figure 2;

Figure 6 - section G-g of figure 2;

7 - gear unregulated hydraulic machines;

On Fig - section a-a 7;

Figure 9 - diagram of the switch to the locked and differential transmission hidrotransmisia;

Figure 10 is a drawing of a planetary gear-recuperator;

Figure 11 - drawing plate control.

Dual pedal 1 is equipped with a return spring 2 in the middle position and is connected to the plate 3. With the slots on the main plate 3 is connected to the lever 4 of the motor 5, the lever 6 "polar" of the plunger 7 and the plunger control the means 8. In plate 3, the groove of the lever 4 is performed by a radius R1 (Fig. 11), the center of the radius R1 is set on the middle line "SS plate 3, which passes through the point "0" is perpendicular to the direction of movement of the plate 3. Arrow keys from "0" on the plate 3 (11) denotes the direction of movement of the plate 3 when the dual control pedal 1. The groove of the lever 6 is made of three rectilinear grooves "a", "b", "C". Groove "b" perpendicular to the middle line "SS plate 3, the ends of the groove "b" are connected by the inclined parallel grooves with the ends of the slots "a", "in". The groove of the plunger 8 is made in two equal radii R2, R2' with the break groove, and the centers of the radii are located on the middle line "SS plate 3.

The cavity of the plunger management 8 (1) pipes 9, 10 are connected with cavities witness of the plunger 11 of the regulated pump 12 and the cavities of the plunger feedback 13 and also with a by-pass valve 14. Adjustable pump 12 pipes 15, 16 connected to the cavities of the Executive plunger 17 hydraulic machines 18.

When this plunger feedback 13 and the actuating plunger 17 are rigidly interconnected. Shafts hydraulic machines 18 and the pump 12 is connected to the planet carrier of 19 satellites planetary gearbox-recuperator 20, the Central gear 21 with the shaft of the motor 5, and the crown gear 22 teeth, gearing connected with the shaft of the flywheel 23, the flywheel 23 is equipped with overrunning clutch 24. aguleria the hydraulic machines 18 pipelines 25, 26, 27, 28 are connected with the unregulated hydraulic machines 29, 30, 31, 32, and also with cylindrical grooves floating plunger 33, which is placed in the housing 34 between the two end cavities. The pipes 25, 26 are connected with the "polar" plunger 7, through channels which face the cavity of the floating plunger 33 may be communicated, reversed or blocked by a "polar" plunger 7 with the pipes 25, 26. In addition, the piping 25, 26, 27, 28 are connected with a two-position plunger 35, which is equipped with individual pedal 36 and the return spring. The pipes 25, 28 check valves 37 are connected to the tank feed 38.

Unregulated hydraulic machines (Fig.7, 8) is similar gear adjustable hydraulic machines, but in the hermetically sealed casing 39 two diametrically opposite gears 40, 41 are in engagement with the internal teeth of the outer gear 42. Unregulated hydraulic machines has four cavities 43, 44, 45, 46.

Hidrotransmisia controlled dual pedal control 1 and plate 3, three grooves which control mode of a drive motor 5, the plunger 8 the witness of the steering hidrotransmisia and polar plunger 7.

Plate 3 changes the mode of a drive motor 5 synchronously with the change of the energy transfer of hidrotransmisia on wheels.

Double-loop servo hydraulic works following the way:

With the engine 5 and the heat exchanger 20 receives energy from the main pump 12 and an adjustable hydraulic machines 18. The pedal 1 "forward" moves down the plate 3 (Fig 1), while the plunger control 8, shifting groove plate 3, creates pressure in the pipe 9 and witness the plunger 11 moves and increases the performance of the regulated pump 12, the pressure in the pipe 15 moves the actuating plunger 17 adjustable hydraulic machines 18. Synchronously with the actuating plunger 17 moves the plunger feedback 13, which creates pressure in the pipeline 10 and returns witness the plunger 11 in the original middle position, and the main pump 12 to zero performance, leaving the Executive plunger 17 is displaced and adjustable hydraulic machines 18 in a particular performance. With the termination of the pedal 1 spring 2 returns the pedal 1 in the middle position, the plunger control 8 and witness the power steering in reverse sequence set adjustable hydraulic machines 18 zero performance.

The discrepancy zero performance adjustable hydraulic machines 18 middle pedal position 1 eliminates the bypass valve 14. This pedal 1 "forward" or "back" is zero performance adjustable hydraulic machines 18, is pressed individual is supplemented flax foot pedal control valve 14 and release the pedal 1 to the middle position, after this is released individual foot control valve 14. In this sequence, through the valve 14 of the pipe 9, the working fluid enters the pipe 10, or Vice versa.

Planetary gearbox-exchanger works as follows:

The Central gear 21 through gears drove satellites 19 transmits torque to the crown gear 22 opposite to the direction of rotation of the Central gear 21. However, the overrunning clutch 24 holds the crown gear 22 from rotation in the opposite direction (figure 10, the flywheel 23 is not marked, the crown gear 22 is equipped with overrunning clutch 24). While torque gets drove satellites 19, which are connected by adjustable hydraulic pump 12 and the hydraulic machines 18. In this case, the teeth of the Central gear 21, gear drove satellites 19 and the crown gear 22 perform the role of the gearbox with decreasing speed drove satellites 19 (required for gear pumps). With increasing speed drove satellites 19 (for example, from an adjustable hydraulic machines 18) is greater than the drive motor 5, the gear drove satellites 19 give torque on the crown gear 22 in the same direction with the planet carrier of 19 satellites. In this direction the overrunning clutch 24 does not fix the crown gear 22, thereby automatically accumulated the e energy a crown gear 22 (or flywheel 23). With decreasing speed drove satellites 19 the accumulated energy with the crown gear 22 (or from the flywheel 23) is automatically added to the energy of the Central gear 21 of a drive motor 5 and the gear carrier satellites 19 is supplied to hidrotransmisiju machine to a complete stop of the crown gear 22 (or flywheel 23).

In hidrotransmisia adjustable hydraulic machines 18 are connected by pipes 25, 26, 27, 28 with the unregulated hydraulic machines 29, 30, 31, 32 (Fig.9). A closed hydraulic system of hidrotransmisia creates working conditions of hydraulic machines in the mode of the pump or motor. Connecting pipes 25 and 27, and 26 and 28, the cylindrical grooves floating plunger 33, adjustable hydraulic machines 18 provides a differential communication unregulated hydraulic machines 29, 30, 31, 32. Decoupling between the pipes 25 and 27 and the pipes 26 and 28, a floating plunger 33 is provided, the blocked link between unregulated hydraulic units 29, 31 and 30, 32.

Hidrotransmisia works as follows:

Negueruela the hydraulic machines 18 in zero productivity stops the flow of the working fluid in the pipes 25, 26, 27, 28 and provides unregulated hydraulic machines 29, 30, 31, 32 hydraulic braking. Power from the engine 5 and the gear-recuperator 20 in zero performance hydraulic machines 18 no lane is given on the unregulated hydraulic 29, 30, 31, 32. Pedal 1 when moving "forward" moves down the plate 3 corresponding to the grooves increase the motor 5, and the plunger 8 and witness the change steering performance adjustable hydraulic machines 18, increasing the pressure in the pipes 25, 27. However, at the beginning of the moving plate 3 in the groove "b" lever 6 does not displace polar plunger 7 and the end cavity of the floating plunger 33 is not connected with the pipes 25, 26. Floating plunger 33 closes a hydraulic connection between the pipes 25 and 27, and between the pipes 26 and 28. Therefore, the initial movement of the machine (clutch) comes with two differential between hydraulic unregulated hydraulic machines 29, 31 (front wheels) and 30, 32 (rear wheels). With further increase of speed of car pedal 1, the grooves of the plate 3 synchronous mode increases engine 5, the plunger 8 and witness the power increase performance adjustable hydraulic machines 18 and the groove in the plate 3 and the lever 6 moves "polar" plunger 7, the channels which connect the end cavity of the floating plunger 33 to the pipes 25, 26. The pressure of the working fluid from the pipe 25, by the end of the cavity shifts the floating plunger 33, its cylindrical grooves are connected with the pipes 25 and 27 and the pipes 26 and 28, thereby automatically swap the value of all non-adjustable hydraulic machines 29, 30, 31, 32 to a differential hydraulic transmission and the wheels of the vehicle differential communication with the road surface.

To reduce the speed of car pedal 1 spring 2 shifts the plate 3, the slots of the plate 3 is reduced mode of the motor 5 and the plunger 8 servo steering decreases performance adjustable hydraulic machines 18. This unregulated hydraulic 29, 30, 31, 32 pass into the mode of the hydraulic pump and changing the polarity of the pressures in the pipes 25, 26 and 27, 28, and through the channels of "polar" of the plunger 7 changing the polarity of the pressure in the end cavities floating plunger 33, which moves the floating piston 33 in the opposite direction and overlaps the hydraulic connection pipes 25 and 27, 26 and 28. Two differential hydraulic transmission with fixed hydraulic machines 29, 30, 31,32 are automatically blocked from being transferred in the synchronous braking of the machine and adjustable hydraulic machines 18 switches the motor and provides the accumulation of braking energy through led satellites 19 and the crown gear 22 on the flywheel 23 to a complete stop the car. Groove "b" plate 3 and lever 6 sets of "polar" of the plunger 7 in the middle position, which overlaps hydraulic connection end cavities floating plunger 33 with the pipes 25, 26. Spring 2 returns the foot pedal 1 and Latino 3 in the middle position.

For movement back pedal control 1 plate 3 is moved in the opposite direction. The grooves of the plate 3 at the same time increase the mode of a drive motor 5 and move the plunger 8, and witness the steering moves the actuating plunger 17 in the opposite direction, with adjustable hydraulic machines 18 reverses the direction of flow of the working fluid in the pipes 25 and 27, 26 and 28, as a result, the braking energy stored by the flywheel 23, is summed with the energy of the drive motor 5 of the planetary gear-recuperator and used to accelerate the car to a complete stop of the flywheel 23.

At the beginning of the movement of the machine "back" groove "b" plate 3 does not displace the lever 6, "polar" plunger 7 overlaps the hydraulic connection of the end cavities floating plunger 33 with the pipes 25, 26 and the floating plunger 33 overlaps the hydraulic connection pipes 25 and 27, 26 and 28 with each other. This unregulated hydraulic 29, 31 and 30, 32 are blocked two differential hydraulic with hydraulic machines 18. The polymerization and the initial movement of the machine is the front and rear wheels are locked together. When further increasing the speed back pedal 1 is shifted to the plate 3, a groove "and" plate 3 moves the lever 6 and the channels polar plunger 7 change the polarity of the pipes 25, 26 to the ends of the m cavities floating plunger 33.

The pressure in the pipe 26 shifts the floating plunger 33, the cylindrical grooves which connect the pipes 25 and 27 and the pipes 26 and 28, automatically switching unregulated hydraulic 29, 30, 31, 32 to a differential hydraulic transmission with adjustable hydromachines 18. Reversionary the flow of the working fluid with adjustable hydraulic machines 18 changes the direction of rotation of unregulated hydraulic machines 29, 30, 31, 32. Pedal 36 has a cylindrical groove dip plunger 35 and connect the pressure and suction cavity adjustable hydraulic machines 18 and unregulated hydraulic units 29, 30, 31, 32, enabling the towing vehicle and the movement of the tumbler.

To regulate operation of the motor 5, you must use the automatic mode of the engine (DGS).

Sources of information

1. VAZ-2108, VAZ-2109: Multicolor album / Gkernel, Wagershare, Appignano and others - M.: Mashinostroenie, 1989

2. Gear pump adjustable reversible performance, the patent for invention №2194190 from 01.08.2000,

3. USSR author's certificate 1642148, CL F 16 H 33/02, 15.11.88, (prototype).

1. Regenerative reversible variable hidrotransmisia wheeled machine that contains the drive motor, the heat exchanger with overrunning clutch, adjustable reversible hydraulic machines with pressure the suction cavity and the plunger management communicated with the hydraulic control system, pipelines, characterized in that hidrotransmisia equipped with servo-steering with adjustable reversible pump performance, four unregulated hydraulic machines, each of which has a wheel of the machine, and the wheels of the machine are connected with the road, the exchanger is made in the form of a planetary gear carrier which is connected to the adjustable reversible pump performance and adjustable reversible hydraulic machines having two diametrically-pressure and two diametrically-suction cavity and connected by pipelines with fixed hydraulic machines, also adjustable reversible hydraulic machines equipped with a "floating "piston with two cylindrical grooves between two end cavities, and also equipped with a "polar" plunger, channels which are hydraulically communicated, blocked or reversed end cavity of the floating plunger with pressure and suction cavities adjustable reversible hydraulic machines, with cylindrical grooves floating plunger simultaneously closed or hydraulically communicated to the two pressure and two suction cavity of the adjustable hydraulic machine, and the lever polar plunger mechanically connected with the corresponding groove of the plate body speed control and reverse the m machine.

2. Hidrotransmisia according to claim 1, characterized in that the servo booster is made of double-circuit, where the first path has a plunger control, which is connected with the corresponding groove of the plate speed control and reverse the machine, and the cavity of the plunger control hydraulically communicated with the cavities witness plunger adjustable power steering pump and with the cavities of the plunger feedback, and with a by-pass valve, with bypass valve is made with one cylindrical groove, has an individual foot pedal and return spring, and the second loop servo steering diametrically opposite cavities adjustable reversible pump performance reported pipe with two end cavities of the Executive plunger adjustable hydraulic machines of hidrotransmisia, Executive plunger of the second circuit is mechanically rigidly connected to the plunger feedback first loop servo steering.

3. Hidrotransmisia according to claim 1 or 2, characterized in that the control speed, stop and reverse the movement of the machine made double pedal with spring return to middle position pedal mechanically connected to a control element in the form of a plate mounted for movement with three grooves to the second lever connected control mode of a drive motor, the plunger control servo steering and lever polar plunger adjustable hydraulic machines, while the groove of the lever mode of the engine is made by a radius centered on the middle line of the plate, the groove of the plunger control servo steering made versatile with radii of the inflection point on the centerline of the plate and the groove of the lever polar plunger carried out by three rectilinear grooves with various offset from the middle groove of "polar" of the plunger.

4. Hidrotransmisia according to claim 1, characterized in that the Central gear of the planetary gear-recuperator connected to the shaft of a drive motor, drove satellites with adjustable hydraulic pump servo steering and adjustable hydromachines hidrotransmisia, and a crown gear connected to the flywheel, and the flywheel is equipped with overrunning clutch and mounted in a horizontal position.

5. Hidrotransmisia according to claim 1, characterized in that it is equipped with a two-position plunger with four cylindrical drillings, through which the pressure and suction cavity adjustable hydraulic machines communicated with each other or blocked off by the plunger, while a two-position plunger has an individual foot control with spring return.



 

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5 cl, 7 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to crawler tractors and it can be used in their full-flow hydrostatic transmissions. Said transmission contains dividing reduction unit 2, two parallel final hydrostatic drives with pumps 3, 4 and hydraulic motors 5, 6, track reduction units 17, 18 and two planetary mechanisms. Planetary mechanisms are installed between hydraulic motors 17, 18 and track reduction units 17, 18. Sun gears 9, 10 of planetary mechanisms are connected with each hydraulic motor by two similar gear trains 7, 9. Carriers 11, 12 of each planetary mechanism are connected with epicyclic wheels 14, 13 of other planetary mechanism and with track reduction units 17, 18. invention improves maneuverability of tractor, provides economic recuperation of brake power from trailing side to leading side at turning of tractor, reduced power load on engine at turning, reduced power losses in hydrostatic drives of transmission of tractor with possibility of use of hydrostatic drives of lower installed power.

EFFECT: improved service characteristics of tractor.

1 dwg

FIELD: transport engineering; automobiles with positive displacement hydraulic drive.

SUBSTANCE: proposed transmission includes constant-capacity guided-vane hydraulic pump mechanically connected with vehicle engine communicating through pressure, drain and suction hydraulic lines through hydraulic distributor enclosing pressure and drain hydraulic lines and playing the part of reversor with at least one constant-capacity reversible guide-vane hydraulic motor to transmit torque to one or two driving wheels of automobile. Spaces of suction and drain hydraulic lines communicate with space of hydraulic tank. Suction hydraulic line passes through adjustable hydraulic restrictor whose control lever is mechanically coupled with automobile accelerator pedal.

EFFECT: simplified design of transmission, reduced fuel consumption and weight of transmission and its cost, and increased efficiency of automobile.

18 cl, 5 dwg

FIELD: mechanical engineering; machine building hydraulics.

SUBSTANCE: invention can be used on vehicles and machine-and-tractor units operating under unsteady conditions of movement. Proposed device contains planetary train 1, reactive link 3 connected with drive gear of oil pump 5. Planetary train is connected through carrier shaft with gearbox 9 and is set into operation by engine 11. Two-step adjustable restrictor 12 is installed in pressure main line of pump. Safety valve 14 and control cock 15 are connected to input of adjustable restrictor, being also installed in pressure main line of pump pneumohydraulic accumulator, being end member of pressure main line, is provided with three spaces. It consists of hydraulic cylinder, free piston, piston with rod, piston position regulator, oil line and oil channel. Space between pistons is filled with oil which regulates volume.

EFFECT: reduced influence of vibrations of external traction load onto functioning of machine-and-tractor unit.

2 dwg

FIELD: transport engineering; hydrostatic transmissions.

SUBSTANCE: proposed hydrostatic transmission contains pumping unit consisting of main and makeup pumps driven by vehicle engine, hydraulic motors connected by main hydraulic lines with pumping unit and forming circulating hydraulic circuit, and electrically driven self-contained pump whose delivery space is connected with hydraulic circuit formed by main hydraulic lines. Hydrostatic transmission is furnished additionally with sealed hydraulic tank with device for charging its air space with compressed air from vehicle pneumatic system and containing shutoff cock, compressed air pressure regulator in sealed hydraulic tank with safety valve and vacuum manual control valve to discharge compressed air from sealed hydraulic tank, two-position manual control valve for alternate hydraulic coupling of suction space of self-contained electrically-driven pump with hydraulic tank and with device for charging the tank with working liquid, check valve arranged in drain hydraulic line at inlet of sealed hydraulic tank, and manually controlled shutoff valve in suction hydraulic line at outlet of sealed hydraulic tank.

EFFECT: improved reliability of hydrostatic transmission of vehicle designed for operation under various road conditions.

5 cl, 1 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention can be used in different vehicles and in devices and mechanisms for clashless engagement of driven shafts. Proposed torque converter contains drive and driven units of converter. Drive unit is made in form of disks 2-5 with slots freely fitted on splined shaft 1. Movable blades are fitted in said slots. Driven unit of converter is made in form of cylindrical housing 7 with driven shaft 16 and rings 11 and 12 fitted on shaft. Disks 2-5 with blades 6 of drive unit of converter are arranged inside rings. Slots in disks 2-5 of drive unit of converter are made through being arranged tangentially. Each of rings 11, 12 in cylindrical housing 7 of converter driven unit is installed for rolling on guide 13, being connected with axle-shaft 14 flush-fitted in cradle of step bearing 15 whose body is in rigid engagement with cylindrical housing 7. With drive unit rotating, summary driven torque is formed from its hydraulic and inertia components. Formulas for calculating the torque are given in description of invention.

EFFECT: improved efficiency of hydraulic - inertia converter, its control system, gearbox of converter and method of torque conversion.

24 cl, 1 tbl, 10 dwg

FIELD: mechanical engineering; vehicle hydraulic drives.

SUBSTANCE: proposed recuperative reversible stepless hydraulic transmission of wheeled vehicle contains drive engine 5, recuperator 20 with overrunning clutch 24, controllable reversible hydraulic machine 18 with pressure and suction and control plunger 8 communicating with hydraulic control system through pipelines, follow-up hydraulic booster with variable-capacity pump 12 of reverse capacity, four non-controllable hydraulic machines 29-32. Each of said hydraulic machines has vehicle wheel, and wheels of vehicle are in contact with road pavement. Recuperator 20 is made in form of planetary reduction gear whose carrier 19 is connected with pump 12 and with hydraulic machine 18 provided with two diametric pressure and two diametric suction spaces and connected with hydraulic machines 29-32 by pipelines. Hydraulic machine 18 contains "floating" plunger 33 with two cylindrical grooves between two end face spaces and "polar" plunger by channels of which end face spaces of floating plunger 33 are communicated, overlapped or reversed with pressure and suction spaces of hydraulic machine 18. Cylindrical grooves of floating plunger 33 synchronously overlap or hydraulically communicate two pressure and two suction spaces of hydraulic machine 18. Lever 6 of polar plunger is mechanically connected with corresponding slot of plate 3 of vehicle speed and reverse control member.

EFFECT: reduced number of control members, dispensing with brake system improved cross-country capacity of vehicle, reduced fuel consumption, reduced acceleration time, increased efficiency.

5 cl, 11 dwg

FIELD: public building structures, particularly drives for showcase rotation.

SUBSTANCE: drive to rotate showcase substantially formed as superimposed disc 4 installed on pin 5 provides force transmission from drive 12 to disc 4 by means of flexible tie having tensioning means. Flexible tie is formed as closed loop of chain 10 having rigid links. The chain passes around the disc 4 along disc surface generator. Drive has sprocket 11 of driving means. The sprocket 11 is installed on shaft of hydraulic drive 12. Hydraulic drive 12 is mounted on plate 13 moving in radial direction relative disc 4 by hydraulic power cylinder 16.

EFFECT: increased safety of the drive, improved disc position adjustment, reduced size, simplified mounting and enhanced maintainability.

7 cl, 2 dwg

FIELD: transport mechanical engineering.

SUBSTANCE: device comprises electric means for measuring working volume of pumps and hydraulic motors and pickup (60) for measuring the speed of rotation of the shaft of the pump station. The electric circuits are provided with threshold control members (67) and (80) interconnected between pickup (6) and the electric means. Between threshold control members (67) and (80) and electric means for changing working volume of pumps (67) and (80) and hydraulic motors (13), (14), (17), and (18) of the drive of end wheels are variable resistors (77), (78), (86), and (87) that are controlled by pickups (89) and (89) of pressure difference in hydraulic circuits of the drive of the intermediate wheels and the drive of each pair of end wheels.

EFFECT: enhanced reliability and prolonged service life.

3 cl, 4 dwg

FIELD: mechanical engineering; production of drive units for engineering tools and motor vehicles.

SUBSTANCE: the invention is pertaining to the field of mechanical engineering and may be used in production of drive units for engineering tools and motor vehicles. The self-regulating infinitely variable speed transmission contains: an input shaft 9 and an output shaft 6, a centrifugal type nonadjustable hydraulic pump 3, a gear differential unit 2 with two output shafts 5, 6 and a nonadjustable hydraulic motor 4. The hydraulic pump 3 is connected to the gear differential unit output shaft 5. The nonadjustable hydraulic motor 4 is connected to the gear differential unit output shaft 6, which is an output shaft of the gear differential unit output shaft. Self-regulation of a torque of the output shaft is depending on a load by changing the number of revolutions per a minute of the centrifugal pump using the differential gear of the he self-regulating infinitely variable speed transmission. The technical result is an increased affordability due to reduction of a quantity of gears and lack of the throttling losses of a liquid and to the complete self-regulation.

EFFECT: the invention ensures an increased affordability due to reduction of a quantity of gears and lack of the throttling losses of a liquid and to the complete self-regulation.

1 dwg

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