The present invention relates to the field of transport mechanical engineering.

Objectimprove performance and operational reliability of a friction shock absorber.

The friction shock absorber (FIG. 2) comprises housing (1), whose walls form orifice (2), and bottom (4) that is in contact with return-and-retaining device (5) contacting a friction assembly that consists of the following elements fitted out with friction surfaces (f1-f10): supporting plate (10), pressure wedge (6), stay wedges (7), and reverse-U-shaped movable plates (9) fitted out with side shelves (14) that cover guide plates (8) and are located on supporting plate (10). Return-and-retaining device (5) is available between the guide plates. Additional return-and-retaining device (11) is available between the pressure wedge and the supporting plate.

Recesses for the return-and-retaining device and hard lubricant inserts are available on the guide plates;

Movable plates may be partially T-shaped forming side shelves that are located on the supporting plate.

Hooks (15, 16) are available on the pressure wedge and stay wedges, located so as to enable a mutual contact during the back stroke of the pressure wedge.

A monitoring system for a dual-stage, pressure-activated, mixed fluid gas shock strut, may comprise a controller, and a tangible, non-transitory memory configured to communicate with the controller, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the controller, cause the controller to perform operations comprising receiving, by the controller, a primary chamber temperature sensor reading, receiving, by the controller, a primary chamber pressure sensor reading, receiving, by the controller, a shock strut stroke sensor reading, and calculating, by the controller, an oil volume in a primary chamber of the shock strut. The instructions may cause the controller to perform further operations comprising calculating, by the controller, a number of moles of gas in a primary chamber of the shock strut and calculating, by the controller, a number of moles of gas in a secondary chamber of the shock strut.

A monitoring system for a dual-stage, separated gas/fluid shock strut may comprise a controller and a tangible, non-transitory memory configured to communicate with the controller. The tangible, non-transitory memory may have instructions stored thereon that, in response to execution by the controller, cause the controller to perform various operations. Said operations may include calculating, by the controller, a secondary chamber nominal pressure, determining, by the controller, a shock strut stroke associated with the secondary chamber nominal pressure, calculating, by the controller, a volume of oil in an oil chamber of the shock strut, calculating, by the controller, a volume of gas in a primary chamber of the shock strut, calculating, by the controller, a secondary chamber inflation pressure, and calculating, by the controller, a volume of oil leaked into the primary chamber of the shock strut.

A monitoring system for a dual-stage, separated gas/fluid shock strut may comprise a controller and a tangible, non-transitory memory configured to communicate with the controller. The tangible, non-transitory memory may have instructions stored thereon that, in response to execution by the controller, cause the controller to perform various operations. Said operations may include determining, by the controller, a shock strut stroke at which a secondary chamber of the shock strut is activated, calculating, by the controller, a volume of oil in an oil chamber of the shock strut, calculating, by the controller, a volume of gas in a primary chamber of the shock strut, and calculating, by the controller, a volume of oil leaked into the primary chamber of the shock strut.

The spring includes an elastic member having a liquid accommodating chamber. The sealing member includes a base plate, a pressure plate, and a pressure elastic membrane provided in the liquid accommodating chamber. The pressure elastic membrane has a lip portion radially extending from an end portion of the pressure elastic membrane. The lip portion is provided with a projection. The pressure plate and the base plate define a clamping recess together. The lip portion is pressed in the clamping recess to seal the liquid accommodating chamber.

Damping stopper for a mechanism in which a housing and shaft are not only displaced axially relative to each other but but also rotated relative to each other. The damping stopper is attached to a space portion between an end surface portion on housing side and an end surface portion on shaft side which is displaced axially relative to the housing and is rotated relative to the housing and has a metal fitting on one of the end surface portions, an elastic body connected to the metal fitting, and a sliding member connected to the elastic body. The sliding member contacts the other end surface portion to contact/separate from the other end surface portion and the sliding member is slidable and rotatable relative to the other end surface portion when the shaft is rotated while the sliding member, containing resin component, contacts the other end surface portion.

A foot of a washing machine comprises a foot base, a flexible accommodating body and an adjustable foot, a hollow chamber is arranged in the foot base, and the hollow chamber comprises at least a gas chamber for filling gas. The flexible accommodating body is arranged in the hollow chamber and is communicated with the gas chamber, an accommodating chamber is arranged in the flexible accommodating body and is provided with a hydraulic medium. The hydraulic medium can flow to the gas chamber under pressure. An end of the adjustable foot is relatively slidably set in the hollow chamber and the flexible accommodating body is in contact or connected with the adjustable foot. The foot of a washing machine can automatically adjust adaptively due to the fluidity of the hydraulic medium under different pressures.

A method for servicing a dual-stage, separated gas/fluid shock strut may comprise measuring a servicing temperature, charging a secondary gas chamber with compressed gas, wherein a secondary chamber pressure corresponds to the servicing temperature, pumping oil into the shock strut, and charging a primary gas chamber with compressed gas.

A monitoring system for a dual-stage, separated gas/fluid shock strut may comprise a controller and a tangible, non-transitory memory configured to communicate with the controller. The tangible, non-transitory memory may have instructions stored thereon that, in response to execution by the controller, cause the controller to perform various operations. Said operations may include calculating, by the controller, a secondary chamber nominal pressure, determining, by the controller, a shock strut stroke associated with the secondary chamber nominal pressure, calculating, by the controller, a volume of oil in an oil chamber of the shock strut, calculating, by the controller, a volume of gas in a primary chamber of the shock strut, calculating, by the controller, a secondary chamber inflation pressure, and calculating, by the controller, a volume of oil leaked into the primary chamber of the shock strut.

A monitoring system for a dual-stage, separated gas/fluid shock strut may comprise a controller and a tangible, non-transitory memory configured to communicate with the controller. The tangible, non-transitory memory may have instructions stored thereon that, in response to execution by the controller, cause the controller to perform various operations. Said operations may include determining, by the controller, a shock strut stroke at which a secondary chamber of the shock strut is activated, calculating, by the controller, a volume of oil in an oil chamber of the shock strut, calculating, by the controller, a volume of gas in a primary chamber of the shock strut, and calculating, by the controller, a volume of oil leaked into the primary chamber of the shock strut.