摘要:
A device for an extensible and compressible friction-based damper which selectively resists stroking in a first direction while freely sliding in the opposite direction. Resistance is proportional to an adjustable and pre-settable value, which provides and adjustable static-hold capability. Sliding resistance being substantially independent of the relative position, velocity, acceleration or jerk (d3x/dt3) imposed upon it. Dampers according to the present disclosure can eliminate resonance amplification when combined with other conventional suspension components. The damper may be used in applications such as isolation mounts. Also disclosed is a method for a high-performance isolation mount to protect a Payload (persons or equipment) from mechanical shock and vibration, incorporating one or more dampers according to the present disclosure together with one or more elastic elements. A device made according to the present disclosure is dubbed a Smooth Transient Excursion Non-Resonant (STEN-R) Damper.
摘要:
An energy absorbing system for controlling the force where a moving object engages a stationary stop and where the system utilized telescopic tubular members, energy absorbing diaphragm elements, force regulating disc springs, and a return spring to return the telescoping member to its start position after stroking. The energy absorbing system has frusto-conical diaphragm elements frictionally engaging the shaft and are opposed by a force regulating set of disc springs. In principle, this force feedback mechanism serves to keep the stroking load at a reasonable level even if the friction coefficient increases greatly. This force feedback device also services desensitize the singular and combined effects of manufacturing tolerances, sliding surface wear, temperature changes, dynamic effects, and lubricity.
摘要:
The invention relates to an impact-resistant and energy-absorbing item of street furniture comprising only a post, a base plate and an energy-absorbing element, wherein the post and the base plate are shaped in such a manner that, when the post is loaded by an external force F just above the base plate, an obliquely, downwardly directed sliding movement of the post relative to the base plate is obtained, which is damped by the energy-absorbing element, not only in the lengthwise direction n of the street furniture, but also in the direction perpendicular to that lengthwise direction.
摘要:
The invention relates to a movement-damping unit (30) comprising a receiving tube (32) having a longitudinal axis (A), a relative movement unit (34) which is received in the receiving tube (32) and which is displaceable back and forth relative to the receiving tube (32) substantially in the direction of the longitudinal axis (A), and a friction device (41) acting between the receiving tube (32) and the relative movement unit (34). According to the invention, the friction device (41) comprises at least one switching element (44, 48) assigned to the relative movement unit (34) and having an engagement portion (48a) formed so as to widen radially in the direction of the longitudinal axis (A), wherein at least one resiliently compressible friction element (46, 50), which comprises a recess (50a) intended for engagement with the engagement portion (48a) and is arranged on the longitudinal face of smaller diameter of the switching element (44, 48), is assigned to each switching element (44, 48).
摘要:
A self locking apparatus comprising: a housing; a load initiating element located within the housing; a spring located adjacent to the load initiating element, and configured to expand in compression against the housing; and wherein the load initiating element and spring are slideable within the housing until the spring is loaded into a self locking mode. A self locking apparatus comprising: an outer tube; a cylindrical body, with a plurality of slotted surfaces forming a plurality of load transfer segments, and with a bottom annulus, the cylindrical body located within the outer tube; a spring located adjacent to the bottom annulus and configured to expand in compression against the load transfer segments; and the slotted cylindrical body and spring are slideable within the outer tube in the absence of the spring being loaded into a self locking mode. A self locking apparatus comprising: an inner tube; a cylindrical body, with a plurality of slotted surfaces forming a plurality of load transfer segments, and with a bottom annulus, the cylindrical body located adjacent to an inner tube; a spring located adjacent to the bottom annulus and configured to expand in compression against the load transfer segments; and the inner tube is slideable with respect to the slotted cylindrical body and spring in the absence of the spring being loaded into a self locking mode.
摘要:
A friction damper includes a housing having a longitudinal axis, a tappet that is displaceable along the longitudinal axis, a friction unit for generating a direction-dependent friction force on the tappet, wherein the friction unit includes at least one friction lining that rests frictionally on the tappet and a friction lining carrier on which the at least one friction lining is held, wherein the friction lining carrier is arranged to be displaced relative to the tappet between an extraction position and an insertion position, as well as a switching unit for variably setting the friction force, wherein the switching unit includes a switchable actuator, a locking element and a force transmission unit which is mechanically coupled to the actuator and to the locking element, wherein the force transmission unit comprises a threaded spindle.
摘要:
The invention relates to a movement-damping unit (30) comprising a receiving tube (32) having a longitudinal axis (A), a relative movement unit (34) which is received in the receiving tube (32) and which is displaceable back and forth relative to the receiving tube (32) substantially in the direction of the longitudinal axis (A), and a friction device (41) acting between the receiving tube (32) and the relative movement unit (34). According to the invention, the friction device (41) comprises at least one switching element (44, 48) assigned to the relative movement unit (34) and having an engagement portion (48a) formed so as to widen radially in the direction of the longitudinal axis (A), wherein at least one resiliently compressible friction element (46, 50), which comprises a recess (50a) intended for engagement with the engagement portion (48a) and is arranged on the longitudinal face of smaller diameter of the switching element (44, 48), is assigned to each switching element (44, 48).
摘要:
A self locking apparatus is disclosed having a housing, a load initiating element located within the housing, a spring located adjacent to the load initiating element and configured to expand in compression against the housing in response to a compressive load, and a compression member slideably disposed within the housing and configured to compress the spring from a side opposite the load initiating element. The load initiating element, spring and compression member are slideable within the housing in a first axial direction and in a second opposite axial direction in response to an axial load on the load initiating element, and lockable within the housing in the second axial direction in response to an axial load on the compression member in the second axial direction.
摘要:
A lift strut with directional damping comprising a housing comprising a wall that defines a housing chamber, the housing defining an axis; spring means located in the chamber; piston means movable through the chamber along the axis in a first direction and a second direction, the spring means biasing the piston means in the first direction, the piston means comprising a shaft, a seat connected to the shaft along the shaft length, and a resilient member fixed to the seat, the resilient element comprising at least one primary damping ridge and a damping tongue, each of the at least one primary damping ridges being in friction engagement with the housing as the resilient member is moved in the first and second directions, the damping tongue being in engagement with the housing wall when the resilient member is moved in the first direction and being located away from the housing wall when the resilient member is moved in the second direction.
摘要:
A frictional damper includes a housing having a longitudinal axis, a tappet which is movable along the longitudinal axis, a frictional unit for generating a direction-dependent frictional force on the tappet, wherein the frictional unit includes at least one friction lining lying rubbingly against the tappet, and a switching unit for variably setting the frictional force.