Hydroautomatic output control gear

FIELD: machine building.

SUBSTANCE: hydro-automatic output control gear incorporates input shaft 1 and output shafts 3, 4 coupled with propulsion unit and inter-jointed by differential 2, its output elements being coupled with pumps 10, 11 be planetary drive of hydraulic control system. Pumps 10, 11 communicate, via control valve 17, with common fluid flow rate control valve driven by both aforesaid output elements. Aforesaid control valve 17 is articulated to steering drive worm 18.

EFFECT: improved vehicle propulsion performances, better steering, longer life of propulsion unit due to automatic shut-off of fluid flow rate control valve.

2 dwg

 

The invention relates to mechanical engineering and can be used in transmissions vehicles.

Known mechanical transmission with gidroaromaticheskie control of power (RF patent N02118261, IPC F16H 39/00; 1998), containing associated with the engine input shaft and connected with the mover output shaft, interconnected planetary gear with the planet carrier, one of the output elements which is associated with the pump of the hydraulic control planetary gear, and the pump is connected with the planet carrier and provided with the liquid flow regulator mounted on the input shaft.

The specified solution is the closest to the claimed technical essence and the achieved result. However, the disadvantage of this mechanical transmission with gidroaromaticheskie the power regulation is the lack of coordinated interaction propulsion one axis at different traction wheels with the support surface, which negatively affects the maneuverability of the vehicle. In addition, when moving along a curved trajectory with a small radius of rotation is not provided pure rolling runner wheels due to actuation of the liquid flow regulator, which causes the deterioration of the controllability of the vehicle and reducing the lifetime of the thruster.

The technical result e.g. the MS to increase traction and speed characteristics of the vehicle and improve its manageability through gidroaromaticheskie ratio control tractive efforts on the propulsion one axis and their rational use depending on the conditions of adhesion of the wheels with the support surface as well as increasing the lifetime of the thruster by automatically shutting down the liquid flow regulator when the deviation of the vehicle from the rectilinear motion.

The technical result is achieved in that the mechanical transmission with gidroaromaticheskie the power regulation contains the associated with the engine input shaft and connected with the mover output shaft, interconnected planetary gear, one of the output elements which is associated with the pump of the hydraulic control planetary gear while the planetary gear is made in the form of a symmetric differential, the second output element of which is also associated with the same pump hydraulic control planetary gear, and the pump through the valve device located in kinematic connection with the bipod steering, communicate with a single flow regulator fluid drive both output elements.

Distinctive features of the prototype is that the planetary gear is made in the form of a symmetric differential, the second output element of which is also associated with the same pump hydraulic control planetary gear, and the pump through the valve device located in cinematic the Russian connection with the bipod steering, communicate with single flow regulator fluid drive both output elements.

Figure 1 shows the schematic diagram of the proposed mechanical transmission, figure 2 - an embodiment of the liquid flow regulator.

The mechanical transmission includes an input shaft 1 connected with the motor and output shafts 3 and 4, associated with propulsion systems (wheels) 5 and 6. The shafts are interconnected by a differential gear 2. On the shafts 3 and 4 are installed gears 7, 8, operate the flow regulator fluid 9 and the pumps 10 and 11 having a suction line 12, 13, bred in the differential casing 14. The discharge line 15 and 16, are connected with Bolotnikova device 17, kinematically connected with the arms 18 of the steering actuator.

Depending on the position of the spool device 17 in the discharge line 15 and 16 can be connected internally or with the differential casing 14 through the discharge pipe 19, or with the liquid flow regulator 9.

The flow regulator fluid includes a housing 20 that connects the inlet line 43, 44 and discharge pipe 21 of the liquid flow regulator (Figure 2). The case contains a cone valves 22, 23 are rigidly interconnected by a rod 24. With valves 22, 23 through the balls 25, 26 between the rods 27 and 28. With rod spring-loaded contact springs 29, 30 and 48, 49 g of the bands 31, 32 and 33, 34 mounted on the axles 35, 36, and 50, 51, fixed to the gears 39 and 40. At the entrance to the inlet line 43 and 44 are tapered seat 41 and 42.

Works mechanical transmission as follows. In straight-line motion in good road conditions, when the traction wheel with the bearing surface of the same, kutasi is transmitted from the engine through the input shaft 1 to the differential 2. From the differential torque is evenly distributed between the output shafts 3 and 4 of the wheels 5 and 6, providing their rotation with equal angular velocities.

Due to the fact that the output shafts 3 and 4 rotate with the same angular speed, the gears 7 and 8 to drive the liquid flow regulator 9 also have the same rotational speed, which provides the neutral position cone valves 22, 23. Thus the fluid from the differential housing 14 of the pump 10 and 11 driven from the gears 7 and 8, is served by injection highways 15 and 16 to the spool 45. In the neutral position of the steering wheel corresponding to rectilinear movement, the arms of the steering actuator 18 sets the spool device 17 in the position that provides the message injection highways 15 and 16 with the liquid flow regulator. As cone valves 22, 23 are in the neutral position, the fluid passing through the regulator 9, what about the drain line 21 returns to the differential casing 14.

When overcoming difficult areas in different clutch driving wheels of the same axis, the bearing surface is slip one of them. When this differential 2 in virtue of their properties transmits all torque coming from the engine through the input shaft 1, the wheel with the least resistance to movement, i.e. skidding wheel. Suppose that skidding is the wheel 6. Then the gear 39 of the liquid flow regulator, driven in rotation from a fixed to the output shaft 4 of the gear 8 will have a higher speed as compared with the gear 40 of the controller 9, driven in rotation by the gear 7 of the output shaft 3. As a result, the loads 31 and 32 associated with the gear 39, due to the increase in centrifugal force compared to cargo 33, 34, begin to disperse, moving around the axes 35 and 36 and their stops, overcoming the force of springs 29 and 30, move the rod 27 with the ball 25 and a conical valve 22 in the direction of the conical seat 41, gradually blocking the flow area of the intake line 43.

This increases the resistance to rotation of the pump 11 and the associated through the gear 8 of the output shaft 4. Thus it is a forced braking, resulting in a torque begins to be transmitted to the output shaft 3, providing rotation of the wheel 5 with more high the Kim-friction bearing surface. This position will be to align the angular velocity of rotation of the gears 7 and 8, and hence the output shafts 3 and 4, providing the ability to overcome difficult areas with different friction wheels with the support surface.

When changing rectilinear motion in the steering movement of the Pitman arm steering transverse of the slide 46, the ball 47 and the valve 45 to the position at which the inlet line 15 and 16 are communicated with the drain line 19. While the pumps 10 and 11 will be idle and the actuation of the liquid flow regulator 9, caused by the difference of speeds of the output shafts 3 and 4 runner and lagging wheels will not affect the performance of the pumps 10 and 11. When returning the steering wheel to the neutral position corresponding to straight-line movement, the spool under the action of the spring 52 returns to its original position. Thus, by automatically disabling and enabling the liquid flow regulator 9 when the deviation of the vehicle from the rectilinear motion.

The proposed construction of a mechanical transmission with gidroaromaticheskie the power regulation can improve the passability of a vehicle by coordinating the interaction of the propulsion one axis in the ranks of their adhesion to the supporting surface, and also to improve the handling of the car and increase the service life of engines by automatically disabling the liquid flow regulator when the deviation of the vehicle from the rectilinear motion.

Mechanical transmission with gidroaromaticheskie the power regulation contains the associated with the engine input shaft and connected with the mover output shaft, interconnected planetary gear, one of the output elements which is associated with the pump of the hydraulic control planetary gear, wherein the planetary gear is made in the form of a symmetric differential, the second output element of which is also associated with the same pump hydraulic control planetary gear, and the pump through the valve device located in kinematic connection with the bipod steering, communicate with a single flow regulator fluid drive both output elements.



 

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