摘要:
The invention is related to a vibration isolating device (1) that is adapted for an elastic coupling of a first component (4) to a second component (5) and for vibration isolation in predetermined frequency ranges between said first and second components (4, 5), said vibration isolating device (1) comprising at least a first and a second elastically deformable plate (1a, 1b) that are attached to each other in at least two separate connecting points (2a, 2b), said first elastically deformable plate (1a) comprising a first curvature (2c) and said second elastically deformable plate (1b) comprising a second curvature (2d), wherein said first and second curvatures (2c, 2d) are respectively located in a region between said at least two separate connecting points (2a, 2b) and arranged such that a gap (2e) is defined between said first and second elastically deformable plates (1a, 1 b).
摘要:
The hydraulic stop member comprises: a cup-shaped body mounted in a compression chamber of the shock-absorber. A piston is mounted at an end of a rod of the shock-absorber so as to slide in the cup-shaped body when the shock-absorber is close to an end-of-travel position of the compression stroke. The cup-shaped body includes a side wall and a bottom wall which define, along with the piston, a working chamber where a damping fluid of the shock-absorber is compressed by the piston. A bypass conduit connects a working chamber with the portion of the compression chamber placed above a seal ring. A pressure relief valve keeps the bypass conduit closed as long as the pressure in the working chamber remains below a given threshold value and to open the bypass conduit, thereby allowing the discharge of the damping fluid from the working chamber to the compression chamber through the bypass conduit, when the pressure in the working chamber exceeds the threshold value.
摘要:
A multi-performance hysteretic rheological device. The invention concerns a mechanical device capable of providing restoring forces with non-linear hysteresis loops whose shapes can be adjusted depending on the specifications required by the application. The forces exerted on rigid sliding blocks on smooth bars are for example produced by the wire ropes composed of steel and shape-memory material wires. The device according to the invention can be used in very different applications including: vibration damper, hysteretic insulator, energy absorber, shock absorber, applications in which a specific rheological body with force-displacement characteristics of hysteretic type is required.
摘要:
The present invention relates to a control system (20) provided to a spray bar (10) mounted on a carrier (1) at an angle (α10) adjustable relative to the carrier (1), the control system (20) comprising an actuator for changing the angle (α10) of the spray bar (10); a control device for controlling the actuator; and a damping device connected to the actuator to damp vibrations and oscillations of the spray bar (10) and thus stabilize the angle (α10). The invention is characterized in that the control system (20) further comprises a recharging device operating simultaneously with the control device to compensate for a pressure change in the damping device during a change in the angle (α10) of the spray bar (10). The invention also relates to a spray bar (10), a carrier (1) and a method of implementation.
摘要:
Provided is a liquid pressure device having no dead band in generation of force and causing no contamination. To achieve the above object, a liquid pressure device in problem solving means of the present invention includes a bottom cap 4 and a head cap 5 welded to an outer tube 3, and a rod guide 6 fastened to the head cap 5, and one end of a pipe 7 is fit in the bottom cap 4 and the other end of the pipe 7 is fit in the rod guide 6, and the bottom cap 4 and the rod guide 6 sandwich a cylinder 1. Accordingly, the liquid pressure device of the present invention can add shaft force to the cylinder 1 while supporting the pipe 7, an inside of which is isolated from a tank T, by the bottom cap 4 and the rod guide 6, and does not need to braze the pipe 7 to the bottom cap 4. Therefore, the liquid pressure device of the present invention has no dead band in generation of force and causes no contamination.
摘要:
A compression damper (104) of a shock absorber includes: a single adjustable fluid circuit configured for controlling a damping rate associated with multiple compression speeds of the shock absorber, wherein the single adjustable fluid circuit includes a fluid passageway (322) through a base valve (112); and a positionally adjustable floating shim stack positioned at one end of the fluid passageway, the positionally adjustable floating shim stack (218) configured for selectively blocking a flow of fluid through the fluid passageway (322).
摘要:
The invention relates to a shock absorber (1), in particular for a motor vehicle, which comprises: a cylinder (2) containing a hydraulic fluid; a main piston (4) actuated by a rod (3), defining in the cylinder a first main chamber (5) and a second main chamber (6), the second main chamber containing the rod; a hydraulic fluid vessel (24); and a valve (11) placed in the flow of the hydraulic fluid between the first main chamber and the second main chamber or between the first main chamber and the vessel. The valve comprises a mobile gate (14) engaging with a seat (13), a spring (20) tending to urge the gate against the seat thereof, and a mobile valve piston (17, 78), defining a first valve chamber (18, 82) and a second valve chamber (19, 83) in the valve, said mobile valve piston being capable of compressing the spring and closing the gate. The shock absorber also includes a control restriction (15) mounted in the flow of the hydraulic fluid from the first main chamber (5) during a compression movement, the control restriction being capable of generating a pressure difference acting on the respective surfaces of the mobile valve piston in a direction that tends to compress the spring during a compression movement and a means (51) for slowing the movement of the mobile valve piston (17, 78).
摘要:
A variable stiffness structure configured to support a variable load, the variable stiffness structure including a positive stiffness element coupled to the variable load, a negative stiffness element, a hydraulic system coupled to the positive and negative stiffness elements and configured to adjust a relative position of the positive and negative stiffness elements in response to a change in the variable load, while the variable stiffness structure supports the variable load.
摘要:
The invention relates to a damper strut comprising: a hydraulic shock-absorber (2) having a damper volume (10) filled with an incompressible damper fluid; a retraction detection device (23) coupled to the shock-absorber (2) for detecting a start and end of a retraction of the shock-absorber (2); and a pressure stage throttle device (16) having a plate valve with a valve plate (30). When the shock-absorber (2) retracts, the damper fluid flows via the pressure stage throttle device against the closing direction of the plate valve, whereby a damper strut resistance force can be generated by the valve plate (30). The pressure stage throttle device (16), for preloading the valve plate (30) in the closing direction of the plate valve, comprises: a preloading means (28) having a force-displacement curve in at least one region of the valve stroke (x) of the valve plate (30), the first deviation of which curve is substantially zero (F' = dF/dx ≈ 0) and has a value (K); and a preloading device (27) which couples the preloading means (28) to the valve plate (30) and is connected to the retraction detection device (23), such that, beginning with the start of the retraction of the shock-absorber (2), the value (K) can be raised from a single starting value during a first time period.
摘要:
A shock absorber includes a piston joined to a piston rod that proceeds into and recedes from a cylinder, an extension-side chamber and a compression-side chamber that are separated from each other by the piston and have a working fluid reserved therein, first and second extension-side discharge passages in which the working fluid discharged from the extension-side chamber flows, an extension-side supply passage in which the working fluid to be supplied to the compression-side chamber flows, first and second compression-side discharge passages in which the working fluid discharged from the compression-side chamber flows, and a compression-side supply passage in which the working fluid to be supplied to the extension-side chamber flows. An extension-side damping valve and a compression-side damping valve are respectively provided in the first extension-side discharge passage and the first compression-side discharge passage. An extension-side electromagnetic pressure control valve and a compression-side electromagnetic pressure control valve, which are respectively provided in the second extension-side discharge passage and the second compression-side discharge passage, are set such that the openings thereof are maximized before the piston speed reaches a high-speed range.