Suspension method and damping device intended for motor vehicle

FIELD: machine engineering.

SUBSTANCE: damping device comprises a shock-absorber (1) filled with hydraulic fluid, inside which there is a piston (2) connected to a rod (17). There is an output module (15) that controls the damping system by varying the degree of stiffness and damping in each sub-phase of compression and return phases. The damping values are chosen for both the compression direction and the return direction for each of the shock-absorber operation sectors, depending on whether this operation is between the static position of the suspension and the position of full compression or between the static position of the suspension and the position of full return.

EFFECT: it is possible to adjust the degree of stiffness independently and damping in each sub-phase.

21 cl, 8 dwg

 



 

Same patents:

Hydraulic damper // 2371617

FIELD: machine building.

SUBSTANCE: damper comprises working cylinder, in which piston is movably installed. Piston consists of two parts, which are rigidly fixed on hollow and solid stems of circular section. Parts of piston are equipped with radial ribs on their external surfaces and protrusions with channels bent at the right angle to horizontal and vertical plane. Protrusions with horizontal channels are arranged as curvilinear and are arranged on internal surfaces of piston parts. Longitudinal axes of protrusions symmetry are displaced relative to each other in diametral plane along radius. A blade wheel, blades of which are equipped with openings of various diametre is installed on solid stem in space between piston parts. Openings of smaller diametre during angular turn of blade wheel may adjoin channels of lower piston part protrusions, and openings of larger diametre may adjoin channels of upper piston part protrusions.

EFFECT: improved efficiency of transport vehicle vibrations suppression.

5 dwg

FIELD: machine building.

SUBSTANCE: shock absorber includes a housing, a cylinder, a stock, a piston-valve, a sleeve-governor, a rod with tracks, which is telescopically installed in the stock, a bottom valve, and a guide of the stock. Tracks on the rod are screw-shaped and have constant or variable angle of twist to the stock axis. When moving on the rod track, the guide stop turns the sleeve-governor; at that, holes in the stock are covered, thus changing the quantity of bypassed liquid. As per the first version, in the shock absorber the rod end is fixed in the bottom valve zone against being turned and against axial movement. As per the second version, in the shock absorber the rod end is fixed in the bottom valve zone against axial movement. Shock absorber includes an additional valve with channels adjoining the bottom valve holes. When moving on the rod track, the guide stop that is additionally made on the stock turns the rod; at that, holes in the additional valve are covered, thus changing the quantity of bypassed liquid.

EFFECT: obtaining automatic adjustment of a shock absorber force depending on a stock position, as well as providing the possibility of readjustment of the shock absorber without its removal.

2 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: inclination angle of relationship between resistance force modulus and deflection speed modulus of an elastic member is changed if current resistance force modulus differs from the specified value. The specified value of resistance force is changed depending on current deflection of the elastic member. The specified current value of resistance force is set so that it is directly proportional to modulus of current deflection of elasticity force, which is corrected to resistance force vector, of the elastic member of its static value. The device for implementing the method represents a hydraulic telescopic damper, in which the resistance force, the modulus of which depends on the modulus of deflection variation speed, is created during the suspension deflection variation. As per the first version, the damper includes a bar fixed at the compression chamber bottom. The bar has a four-sided variable cross-section in the working section of its length. At the damper compression, the bar is retracted into inner cavity of the stock. As per the second version, the damper includes two bars, as well as a compensating chamber that is separated from the compression chamber with a partition wall and partially filled with liquid. The bars are made in the form of a rotation body and installed inside the first and the second guide elements respectively with possibility of longitudinal movement.

EFFECT: preventing resonance, and minimising the resultant force acting on the under-spring mass of the transport vehicle.

17 cl, 10 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway transport. The system contains vertical hydraulic dampers installed under body. Each damper is made as piston pump with discharge and free-flow intercommunicating via throttle chambers for working fluid. The throttle is equipped with rod of variable cross-section with thrusts for end positions. Throttle rod movement drive is made as return spring and solenoid. Solenoid core is connected with throttle rod. Solenoid coils are attached to output terminals of control unit. Input terminals of control unit are connected with electric power source and oscillation frequency sensors installed on body in the area of each damper location. Control unit provides automatic change of end positions of throttle rod by solenoid electric power switching on or off according to indications of corresponding sensors of body vibration frequency.

EFFECT: design simplification and improvement of car movement smoothness.

3 cl, 1 dwg

Damper // 2408804

FIELD: machine building.

SUBSTANCE: damper consists of cylinder chamber filled with fluid, of piston installed inside cylinder chamber, of rod connected to piston and of accumulator. The accumulator facilitates generation of damping force produced by the piston rod due to fluid flow from the side of compression in the cylinder chamber. One coil of spiral damping groove is formed on internal periphery of the cylinder chamber within the ranges of piston stroke. Width of the damping groove is constant along its whole length. Depth of the damping groove is gradually diminishes along the spiral in the direction whereto the piston rod is pushed out. The length of the piston along axial line is less, than pitch of the damping groove.

EFFECT: simplified design and more efficient control of damping force of damper.

6 cl, 7 dwg

FIELD: transport.

SUBSTANCE: invention relates to snowmobile with tunnel and rear suspension assembly. Rear suspension assembly comprises at least one rail for engagement with endless driving track and at least one suspension lever. At least one torsion spring is engaged with at least one second suspension lever. At least one torsion spring has first end in contact with said rail and second end. Torsion spring regulator is fixed to at least one suspension lever. Torsion spring regulator is connected with second end of said spring. Actuator is coupled with torsion spring regulator. Said actuator is located, at least partially, beyond aforesaid tunnel. Said actuator drives the torsion spring regulator to displace torsion spring second end relative to first end.

EFFECT: adjustable rear suspension.

20 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: inclination angle of relationship between resistance force modulus and deflection speed modulus of an elastic member is changed if current resistance force modulus differs from the specified value. The specified value of resistance force is changed depending on current deflection of the elastic member. The specified current value of resistance force is set so that it is directly proportional to modulus of current deflection of elasticity force, which is corrected to resistance force vector, of the elastic member of its static value. The device for implementing the method represents a hydraulic telescopic damper, in which the resistance force, the modulus of which depends on the modulus of deflection variation speed, is created during the suspension deflection variation. As per the first version, the damper includes a bar fixed at the compression chamber bottom. The bar has a four-sided variable cross-section in the working section of its length. At the damper compression, the bar is retracted into inner cavity of the stock. As per the second version, the damper includes two bars, as well as a compensating chamber that is separated from the compression chamber with a partition wall and partially filled with liquid. The bars are made in the form of a rotation body and installed inside the first and the second guide elements respectively with possibility of longitudinal movement.

EFFECT: preventing resonance, and minimising the resultant force acting on the under-spring mass of the transport vehicle.

17 cl, 10 dwg

Managed pendant // 2240930
The invention relates to transport machinery, and more specifically to a vibration protection systems of vehicles, cargoes and crew

The invention relates to the transport industry, in particular to the damping devices of the suspension, and can be used in hydraulic and hydro-pneumatic shock absorbers for passenger cars

The invention relates to the transport industry, in particular to the damping devices of the suspension, and can be used in front and rear hydraulic and pneumatic-hydraulic shock absorbers cars

FIELD: transport engineering.

SUBSTANCE: proposed springing system of vehicle contains elastic pneumohydraulic members 1 with jackets 2 for circulation of liquid installed at sides of vehicle, and also cooling circuit and heating circuit of said elastic pneumohydraulic members 1. liquid in cooling circuit passes from radiator 4 cooled by electric fans 5 along pipelines 6 through water pump 3, three-position flow change-over cock 9 to jackets 2 and, further on, closing cooling circuit, through three-position flow change-over cock 10, to radiator 4. in heating circuit, liquid from radiator 8 of cooling system of engine 7 flows along pipeline 6 through three-position cock 9 into jackets 2 and, further on, closing heating circuit, through three-position flow change-over cock 10, to engine 7. Both circuits are united by pipeline 6 into temperature control system through said three-position cocks provided with control mechanism 11 operated either manually or automatically through controller.

EFFECT: provision of spring system with stable characteristics ensuring higher mean speed and smooth riding across rough terrain at considerable change of vehicle mass.

4 dwg

Combined suspension // 2123942
The invention relates to a transport machine-building, namely the suspension of vehicles

FIELD: transport engineering.

SUBSTANCE: proposed springing system of vehicle contains elastic pneumohydraulic members 1 with jackets 2 for circulation of liquid installed at sides of vehicle, and also cooling circuit and heating circuit of said elastic pneumohydraulic members 1. liquid in cooling circuit passes from radiator 4 cooled by electric fans 5 along pipelines 6 through water pump 3, three-position flow change-over cock 9 to jackets 2 and, further on, closing cooling circuit, through three-position flow change-over cock 10, to radiator 4. in heating circuit, liquid from radiator 8 of cooling system of engine 7 flows along pipeline 6 through three-position cock 9 into jackets 2 and, further on, closing heating circuit, through three-position flow change-over cock 10, to engine 7. Both circuits are united by pipeline 6 into temperature control system through said three-position cocks provided with control mechanism 11 operated either manually or automatically through controller.

EFFECT: provision of spring system with stable characteristics ensuring higher mean speed and smooth riding across rough terrain at considerable change of vehicle mass.

4 dwg

FIELD: machine building.

SUBSTANCE: invention relates to automotive industry. Damping device consists of two parallel and spring-damper systems interconnected via a double-arm balancing lever. At constant position of the sprung mass relative to unsprung mass, forced elastic deformation of one spring-damper system, corresponding to load increase, causes elastic deformation of the other spring-damper system, corresponding to load decrease. In one spring-damper system there is a damper of one-sided action, which inhibits elastic deformation, corresponding to load increase. In the other spring-damper system there is a damper of one-sided action, which inhibits elastic deformation, corresponding to load decrease.

EFFECT: decreased loads and high vehicle controllability.

3 cl, 11 dwg

FIELD: machine engineering.

SUBSTANCE: damping device comprises a shock-absorber (1) filled with hydraulic fluid, inside which there is a piston (2) connected to a rod (17). There is an output module (15) that controls the damping system by varying the degree of stiffness and damping in each sub-phase of compression and return phases. The damping values are chosen for both the compression direction and the return direction for each of the shock-absorber operation sectors, depending on whether this operation is between the static position of the suspension and the position of full compression or between the static position of the suspension and the position of full return.

EFFECT: it is possible to adjust the degree of stiffness independently and damping in each sub-phase.

21 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: inclination angle of relationship between resistance force modulus and deflection speed modulus of an elastic member is changed if current resistance force modulus differs from the specified value. The specified value of resistance force is changed depending on current deflection of the elastic member. The specified current value of resistance force is set so that it is directly proportional to modulus of current deflection of elasticity force, which is corrected to resistance force vector, of the elastic member of its static value. The device for implementing the method represents a hydraulic telescopic damper, in which the resistance force, the modulus of which depends on the modulus of deflection variation speed, is created during the suspension deflection variation. As per the first version, the damper includes a bar fixed at the compression chamber bottom. The bar has a four-sided variable cross-section in the working section of its length. At the damper compression, the bar is retracted into inner cavity of the stock. As per the second version, the damper includes two bars, as well as a compensating chamber that is separated from the compression chamber with a partition wall and partially filled with liquid. The bars are made in the form of a rotation body and installed inside the first and the second guide elements respectively with possibility of longitudinal movement.

EFFECT: preventing resonance, and minimising the resultant force acting on the under-spring mass of the transport vehicle.

17 cl, 10 dwg

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