11results about "Liquid springs" patented technology

The invention relates to a torsional vibration damper (1) or a torsional vibration absorber comprising a rotating system having a primary mass arranged on a rotatable shaft, for example on an engine, in particular an internal combustion engine crankshaft, preferably non-rotatably fixed, and a secondary mass movable relative to the primary mass, and a component for vibration damping and / or vibration reduction of the relative movement between the primary mass and the secondary mass. The component for vibration damping and / or vibration reduction of the relative movement between the primary mass and the secondary mass has at least one pressure accumulator (15, 15'; 22, 22') within the rotating system of the torsional vibration damper (1) or the torsional vibration absorber. The invention also provides a method for damping torsional vibrations of an internal combustion engine crankshaft (2) with a torsional vibration damper (1) or a torsional vibration absorber.

Disclosed is a hydraulic mount including an inner pipe, an outer pipe disposed on an outer side of the inner pipe, a main rubber formed between the inner pipe and the outer pipe, and a fluid chamber having fluid sealed therein, the fluid chamber being formed in the main rubber, wherein the fluid chamber includes an upper fluid chamber defined by the outer pipe and the main rubber, a lower fluid chamber defined by the outer pipe and the main rubber, and a rear fluid chamber formed on a rear side of the main rubber, the rear fluid chamber being configured to fluidly communicate with the upper fluid chamber and the lower fluid chamber.

The application provides a design method of an extrusion oil film damper, which comprises the following steps: S1, starting to design the extrusion oil film damper, determining the value range of an oil film shaft diameter, an oil film width and a target value of damping; S2, determining the value range of an oil film radius gap; S3, selecting an oil film oil supply mode, obtaining the values of the oil film width, the oil film radius gap and the damping, and making a relationship diagram among the oil film width, the oil film radius gap and the damping; S4, selecting appropriate oil film width and oil film radius gap, so that the value of the damping is close to the target value; and S5, outputting a design result. The design method of the extrusion oil film damper can reasonably consider the influence of the piston ring end sealing on the damping, meanwhile, the influence of the oil supply mode on the damping can be considered, and the value range of the influence coefficient is given, the design method is simple and practical, and has engineering application value.

The utility model discloses an integrated blow-molded multi-connected air spring and a support pad, the multi-connected air spring is composed of a plurality of spring units which are blow-molded at one time, the plurality of spring units are mutually communicated through communicating pipes, one of the plurality of spring units is provided with a blow-molding port, each spring unit comprises a body part, a plurality of air holes, a plurality of air holes and a plurality of air holes, the body part is suitable for connecting a plurality of spring units into a whole, and the communicating pipe is combined on the body part; the telescopic part is suitable for generating elastic deformation, and the telescopic part is combined on the upper side and / or the lower side of the body part. According to the utility model, the multi-connected air spring is manufactured by adopting an integrated blow molding process, and the limitation of traditional vertical blow molding is broken through. The multiple spring units are formed through one-time blow molding, so that the spring units are connected more tightly and naturally, and the defects possibly generated due to multiple times of forming and subsequent connection are avoided. In the blow molding process, the material can flow and fill more uniformly.

A measuring instrument comprises a housing and at least one vibration damper attached to the housing.

The invention provides a window body unit capable of being automatically opened and closed and a window body, and relates to the technical field of window bodies, the window body unit comprises a base, an elastic element and an adjusting piece; the base is provided with a ventilation gap; the adjusting piece is made of a deformable material and is used for changing between an initial state and an unfolded state under the excitation of an external environment; the adjusting piece compresses the elastic element and covers the ventilation gap in an initial state; when the indoor environment reaches the set condition, the hardness of the adjusting piece is reduced, the adjusting piece starts to extend, and the elastic element extends and pushes the adjusting piece to be unfolded in the direction away from the base so as to open the ventilation gap in the base. The adjusting piece is made of a deformable material, automatic ventilation and closing can be achieved according to the indoor environment, and use is convenient. Meanwhile, the elastic element plays a role in pushing deformation of the adjusting part, so that the adjusting part extends in the preset direction, and the ventilation effect is guaranteed. The elastic element further provides enough power for unfolding of the adjusting piece, and therefore timely and rapid form transformation is achieved.

The utility model relates to the technical field of hydraulic systems, and provides a hydraulic control system and a damping device. The hydraulic control system comprises a hydraulic cylinder and a driving oil way, wherein the hydraulic cylinder is provided with a rodless cavity and a rod cavity; the driving oil way comprises a first oil way, a second oil way, a third oil way and a fourth oil way, the third oil way and the fourth oil way are connected in parallel and are both connected between the first oil way and the second oil way, the first oil way is connected with the rodless cavity, and the second oil way is connected with the rod cavity; wherein the first oil way and the second oil way are each provided with a first flow adjusting valve, the third oil way is provided with a hydraulic pump, the driving oil way further comprises an energy accumulator, the energy accumulator is connected to the second oil way, and one of the third oil way and the fourth oil way can be selectively communicated with the first oil way and the second oil way. According to the hydraulic control system, the reverse dragging rotation risk and the reverse dragging rotation speed of the hydraulic pump during passive damping adjustment can be reduced, and the damping adjustment precision is guaranteed.

A chassis device (100), a movable platform (1000), a shock absorber (80) and a material access device (900), the chassis device (100) comprises a frame (10), a link mechanism (20) and a first auxiliary wheel assembly (30), the link mechanism (20) comprises a first link (21) and a second link (22), the first link (21) is hinged to the frame (10) through a first hinge point (A1), and the first link (21) is hinged to the first auxiliary wheel assembly (30) through a second hinge point (A2). The second connecting rod (22) is hinged to the rack (10) through a third hinge point (A3), and the second connecting rod (22) is hinged to the first auxiliary wheel assembly (30) through a fourth hinge point (A4). The connecting line of the first hinge point (A1) and the second hinge point (A2) is parallel or approximately parallel to the connecting line of the third hinge point (A3) and the fourth hinge point (A4), and the connecting line of the first hinge point (A1) and the third hinge point (A3) is parallel or approximately parallel to the connecting line of the second hinge point (A2) and the fourth hinge point (A4).

This application discloses a formation method for liquid rubber composite nodes with a tubular flow channel comprises: adding a middle spacer sleeve between an outer sleeve and a mandrel, bonding the middle spacer sleeve and the mandrel together through rubber vulcanization and assembling the integrated middle spacer sleeve and the mandrel into the outer sleeve; installing a tubular flow channel in the mandrel; hollowing the middle spacer sleeve to form a plurality of spaces; after vulcanization, forming a plurality of interdependent liquid cavities by using rubber and the plurality of spaces; and arranging liquid in the plurality of liquid cavities and communicating the plurality of liquid cavities through the tubular flow channel. This can provide small radial stiffness and large axial stiffness to realize a large dynamic-static ratio, thereby optimizing the product performance of the liquid rubber composite nodes.

The invention relates to the technical field of shock absorbers, and particularly discloses a pressure regulating device and a shock absorber. A first valve body of the pressure regulating device is provided with a first channel and a second channel, a second valve body is connected with the first valve body, a center valve is connected with the first valve body, the center valve is provided with a center channel and a containing groove which are communicated, and a floating valve and the center valve of a floating valve set are in sliding fit to form an overflow space. The floating valve is provided with a third channel communicating with the overflow space, the first valve block set is used for blocking the first channel, the second valve block set is used for blocking the second channel, the first channel, the first valve block set and the opening can form a first liquid flow channel, and the center channel, the overflow space, the third channel, the second valve block set and the opening can form a second liquid flow channel. And the opening pressure value of the second liquid flow channel is larger than that of the first liquid flow channel, so that the pressure regulating bandwidth of the shock absorber can be increased, and the use performance of the shock absorber is improved.

An impact dissipating material comprises a matrix material defining a plurality of cells and an interpenetrating material carried by the matrix material. The interpenetrating material is disposed in a first position relative to the plurality of cells of the matrix material under a first loading condition and in a second position relative to the plurality of cells under a second loading condition. The combination of the matrix material and the interpenetrating material defines the overall impact response of the impact dissipating material.