1120results about "Wound springs" patented technology

The invention provides a compression-torsion coupled metamaterial cell element and a negative Poisson's ratio energy absorption structure composed of the compression-torsion coupled metamaterial cell element, and relates to the technical field of compression-torsion energy absorption metamaterials. The cell element comprises an upper connecting plate assembly and a lower connecting plate assembly, an upper-layer four-rod tensioning assembly and a lower-layer four-rod tensioning assembly are arranged between the upper connecting plate assembly and the lower connecting plate assembly, each of the upper-layer four-rod tensioning assembly and the lower-layer four-rod tensioning assembly comprises four compression rigid rod pieces and a plurality of tension elastic bodies, the compression rigid rod pieces are staggered in space to form a quadrangular prism-like frame, and the tail ends of the upper compression rigid rod piece and the lower compression rigid rod piece are hinged; adjacent hinge points and two corresponding corners of the surfaces of the upper connecting plate assembly and the lower connecting plate assembly are connected through tensile elastic bodies and apply pre-tightening force; the energy absorption structure is formed by combining a plurality of cell element arrays, and the negative Poisson's ratio effect is achieved by regulating and controlling the arrays. According to the cell element, a tensioning structure is integrated into a metamaterial configuration, the cell element has the compression-torsion coupling characteristic, the non-localized deformation response of the structure is achieved, and the energy absorption structure has the negative Poisson's ratio effect and provides excellent bearing and impact resistance through an efficient energy absorption mechanism.

The invention provides an active and passive combined type universal vibration isolation base and a vibration suppression method.The vibration isolation base comprises a base shell, a friction wall face, a transverse buffering mechanism, a high-strength elastomer and an axial buffering mechanism, the bottom of the base shell is connected with a vibration source, the friction wall face is installed on the inner wall of the base shell, and the transverse buffering mechanism abuts against the inner wall of the friction wall face; the vibration isolation object is connected to the top of the transverse buffering mechanism, the upper portion of the high-strength elastomer is elastically connected with the bottom of the transverse buffering mechanism, the lower portion of the high-strength elastomer is elastically connected with the top of the axial buffering mechanism, and the bottom of the axial buffering mechanism is connected to the bottom of the base shell. The transverse buffering mechanism and the axial buffering mechanism form a passive damping mechanism, and a magneto-rheological body adjusting structure arranged on the transverse buffering mechanism and a friction damping adjusting structure arranged on the friction wall face form an active adjusting mechanism. Through a passive damping mechanism and an active adjusting mechanism, efficient isolation of full-band vibration and multi-direction vibration can be achieved.

The invention discloses a spring with positioning rings and an elastic cushion comprising the spring, the spring comprises a spring body formed by spiral encircling, two ends of the spring body are encircled to form end face rings, the spring body is provided with at least one group of positioning rings, and the positioning rings are encircling rings of the spring body. The positioning ring is approximately parallel to the end face ring or approximately perpendicular to the elastic force direction of the spring body. The distance between the surrounding ring and the stress end is at least one fourth of the length of the spring. At least one group of positioning rings are designed on the spring body, the positioning rings are surrounding rings on the spring body, and the length of the positioning rings is larger than or equal to 1 / 2 of the circumference. The positioning ring is roughly parallel to the end face ring or roughly perpendicular to the elastic force direction of the spring body, in the follow-up assembling process, the connecting waist ring can be positioned, displacement of the connecting waist ring in the using process is effectively prevented, and convenience and stability of connection between the springs are improved.

A shock absorber body assembly is disclosed that is includes a shock body formed of a cylinder defining a top cylinder end and a bottom cylinder end, and having a cylinder wall that surrounds a cylinder cavity. The cylinder wall is defined by a solid interior portion and a raised cooling pattern disposed on and proud of an exterior side of cylinder wall. The raised cooling pattern is comprised of one or more fins, wherein the raised cooling pattern is configured to provide for heat transfer from hydraulic fluid within the cavity of the cylinder cavity to an environment external to the shock absorber body assembly. The raised cooling pattern includes one or more cooling fins that extend along a length of the cylinder in a straight line and extend outwardly from the cylinder wall in an orthogonal direction, a cooling lattice mesh, or a cooling gyroid mesh.

A spring module includes a spring and a spring bracket for accommodating the spring. The spring bracket may have a base, an end cover and a flexible connecting part connecting the base and the end cover. The spring may be fixed in the spring bracket with a predetermined initial pressure. The spring module may be used in a spring cushion for furniture.

The present disclosure provides an abutment structure and an abutment method thereof. The abutment structure includes a body portion, an abutment portion, and an elastic element, so that an elastic abutment space is formed between the body portion and the abutment portion. Alternatively, the abutment structure is provided with a wheel member, so that an elastic abutment space is formed between the abutment portion and the wheel member and the body portion. Smoother movement and effects of abutment and limitation can be achieved through the abutment portion, the wheel member, or cooperation between the abutment portion and the wheel member.

The present invention discloses a novel combined vibration damping device with adjustable stiffness and damping, which relates to the technical field of vibration damping; it includes a magneto-resistive stress negative stiffness spring located inside the housing and a piezoelectric friction assembly located inside the bearing seat; a central shaft is connected between the two, and a metal helical spring is sleeved outside the central shaft. The bottom of the metal helical spring is connected to a spring base located at the top of the housing, and the top of the metal helical spring is connected to the bottom of the bearing seat; the central shaft is fixedly connected to the top inside the housing through a metal cross leaf spring. The magneto-resistive stress negative stiffness spring and the metal cross leaf spring can be connected in parallel to achieve the adjustment of quasi-zero stiffness, and the piezoelectric friction assembly can achieve the adjustment of damping; a load platform is fixedly arranged at the top of the bearing seat. The present invention has non-linear frequency-varying characteristics of high static stiffness - low dynamic stiffness, large low-frequency damping - small high-frequency damping, and can well solve the contradiction between the bearing capacity and the vibration damping frequency band, as well as the contradiction between high-frequency and low-frequency vibration attenuation, and achieve high-performance vibration damping.

A device for adjusting the stiffness of a suspension spring includes a locking sleeve which defines a helical slot for accepting one end of the suspension spring, and an adjusting ring mounted with the ability to rotate relative to the locking sleeve about a main axis. The adjusting ring has a finger which emerges into the helical slot and is able to form an end stop for the end of the suspension spring. Structure is provided for locking the rotational mobility of the adjusting ring relative to the locking sleeve.

The utility model discloses a motorcycle shock absorber preload and damping adjusting assembly, a preload adjusting set comprises a spring supporting seat, a transverse pin, a preload adjusting ejector rod and a preload adjusting knob which are sequentially installed from bottom to top along the axis of a shock absorber outer pipe, and when the preload adjusting knob is rotated, the preload adjusting ejector rod is driven to rotate and move up and down at the same time; the damping spring is driven to extend or retract through the transverse pin and the spring supporting seat in sequence, so that spring preload adjustment is realized; the damping adjusting set is installed in the preload adjusting set and comprises a damping adjusting ejector rod, a damping adjusting axis and a damping adjusting button which are sequentially installed from bottom to top along the axis of the shock absorber outer pipe, and when the damping adjusting button is rotated, the damping adjusting axis is driven to rotate and move up and down at the same time; and the damping adjusting oil needle is driven to move up and down through the up-down movement of the damping adjusting ejector rod, so that the flow of the damping oil hole is adjusted. The preloading and damping adjusting assembly is installed on the end cover of the motorcycle shock absorber, can be independently adjusted, does not interfere with each other, and is convenient and fast.

The invention relates to an intelligent anti-grounding motorcycle shock absorber, and relates to the technical field of shock absorbers, the intelligent anti-grounding motorcycle shock absorber comprises a spring system, a damping system and an inertia reducing system, the spring system comprises an upper spring mounting seat, a main spring and a lower spring mounting seat which are mounted in sequence, and the damping system is provided with a frame end part and a wheel end part; a frame end component of the damping system is installed on the upper spring installation base, a wheel end component of the damping system is installed on the lower spring installation base, the wheel end component and the frame end component slide through a sliding pair, a damping channel is formed in the frame end component, and the inertia reducing system comprises an inertia rod device, an air pressure generating device and a reducing device. The reducing device is installed on the damping channel, the inertia rod device is installed on the wheel end component in a sliding mode, the air pressure generating device is installed on the wheel end component, the inertia rod device is in transmission connection with the air pressure generating device, and the air pressure generating device is communicated with the inertia reducing system and can prevent grounding.

The application discloses a high-precision Venturi valve characteristic nonlinear compression spring preparation method and a compression spring, and realizes accurate matching of compression spring performance and nonlinear flow regulation characteristics of the Venturi valve through multi-step optimization design. The method comprises the following steps: establishing a Venturi valve curve coordinate system, calculating a flow area, calculating an external force work, fitting a spring performance curve, determining a force value range, designing a spring gradual change process, heat treatment stress relief, testing and correction, ensuring that the spring performance meets the design requirements, and completing final standardization. The application provides a calculation method for force change law of a valve core of a Venturi valve and the valve core under different valve front static pressures, obtains a theoretical force curve, calculates compression and spring force compensation required by a damping structure of the valve core of the Venturi valve, and through forward development design and production, improves the independence of air volume and pressure of the Venturi valve and the air volume control precision.

To solve the problem that conventional hose and cable guidance means have difficulty in maintaining a three-dimensional free curved shape, and require a combination of a plurality of parts, which causes challenges in terms of degree of freedom for design and cost.SOLUTION: The present invention relates to a spring structure that can independently maintain a curved shape by alternately providing tightly wound parts and loosely wound parts every half turn in a compression coil spring. Further, desired curvature and rigidity can be obtained by adjusting a pitch interval and a D / d ratio, making it applicable to three-dimensional guidance and maintaining of hoses and cables. An end part shape can be formed integrally using an NC molding machine, making it compatible with a variety of mounting means.SELECTED DRAWING: Figure 5

Provided is a garter spring, a downhole tool and a well system. The garter spring, in one aspect, includes a coiled spring member having an inside diameter (ID1) and an outside diameter (OD1). The garter spring, in accordance with this aspect, further includes a plurality of spaced balls located within the inside diameter (ID1) of the coiled spring member, as well as ones of spacer elements located in gaps between the plurality of spaced balls.

The invention discloses an intelligent support adjusting device for a wireless laser displacement sensor, and belongs to the field of sensor application, the intelligent support adjusting device comprises a mounting bottom plate, an adjusting plate capable of rotating on the surface of the mounting bottom plate is arranged on the mounting bottom plate, and a hinge plate is hinged to the adjusting plate through a connecting seat; a support plate is detachably connected to the hinged plate through a bolt fastener, a driving assembly is arranged between the support plate and the adjusting plate, and the support plate can rotate in the direction perpendicular to the rotating plane of the adjusting plate through the driving assembly. The top of the support plate is provided with a positioning mechanism capable of damping an installed sensor to ensure the stability of the sensor, and the installation bottom plate is provided with an installation assembly capable of improving the installation flexibility of the support. According to the adjustable support for the wireless laser displacement sensor, multi-dimensional automatic adjustment of the wireless laser displacement sensor can be achieved through cooperation of the adjusting plate, the support plate and the driving assembly so as to adapt to different installation environments and measurement requirements.

The utility model relates to the technical field of hardware parts, in particular to an adjustable elasticity adjusting device and a spring system.The adjustable elasticity adjusting device comprises a sleeve, an elasticity adjusting assembly, a compression spring, a force transmission piece and a force application piece, and the two ends of the compression spring abut against the elasticity adjusting assembly and the force transmission piece respectively; under the condition of no external force, the compression spring enables the force transmission piece to be located at a first position in the sleeve; when the elastic force adjusting assembly is controlled, the compression spring can be compressed or released so as to change the elastic force of the compression spring acting on the force transmission piece. When the axial external force borne by the force application piece in the direction of the compression spring is larger than the elastic force exerted on the force transmission piece by the compression spring, relative position movement of instruments arranged at the two ends of the spring device is achieved; by means of the mode, the problems that in the prior art, a spring device is fixed in elastic force and single in use scene are solved.

The invention discloses a sleeve-shaped tuned mass damper mounting method based on parameter design calculation. The sleeve-shaped tuned mass damper mounting method comprises the following steps that S1, parameters of a single-column wind turbine platform and a whole machine structure are calculated; s2, calculating parameters of the sleeve-shaped tuned mass damper according to the structural parameters of the wind turbine; s3, the sleeve-shaped tuned mass damper is installed on the single-column type wind turbine platform; in the step S2, a kinetic equation is established through a kinetic analysis model, the optimal damping coefficient cd and the distance d of the translational and rotational freedom degrees are solved, and the step S2 comprises the substeps that S21, the single-column wind turbine platform and the sleeve-shaped tuned mass damper are simplified into equivalent four-freedom-degree models; s22, assuming that external excitation is a simple harmonic load, and deducing translation response and rotation response of the sleeve-shaped mass body and the single-column type wind turbine platform; s23, determining a damping tuning parameter and a frequency tuning parameter; s24, solving an optimal damping coefficient copt by a simultaneous equation in combination with a branch resonance point condition; and S25, calculating the distance d according to the rotation radius ratio rho.

The invention discloses a quasi-zero stiffness electromagnetic-spring-rubber composite vibration isolator with a wide vibration isolation frequency band. The quasi-zero stiffness electromagnetic-spring-rubber composite vibration isolator comprises a vibration isolator shell. The electromagnetic structure core is installed in the vibration isolator shell and comprises a first coil, an annular permanent magnet, a third coil and a second coil which are sequentially arranged from top to bottom, the current direction of the first coil is the same as that of the second coil, and the current direction of the third coil is opposite to that of the second coil; the rubber-spring composite vibration isolation platform is mounted in the vibration isolator shell, and the rubber-spring composite vibration isolation platform is mounted in the vibration isolator shell; high linear positive stiffness provided for the rubber-spring composite vibration isolation platform through an electromagnetic structure core is combined with linear negative stiffness provided for the rubber-spring composite vibration isolation platform, a quasi-zero-stiffness platform with small stiffness and large range is achieved, low-frequency vibration with large amplitude can be isolated, the rubber vibration isolation platform is combined, and the vibration isolation performance of the rubber-spring composite vibration isolation platform is improved. And vibration isolation of a wide vibration isolation frequency band is realized.

The present invention provides a spring-loaded cushion that absorbs the impact applied to heavy objects during dropping or transport. [Solution] The spring-loaded cushion 100 of the present invention comprises a coil spring 1 and a mesh belt formed by weaving metal wires and wound in a cylindrical shape around the axis of the coil spring 1 to cover the coil spring 1. The coil spring 1 comprises a maximum diameter portion with the largest diameter, a minimum diameter portion with a diameter smaller than the maximum diameter, and an inclined portion that gradually decreases in diameter from the maximum diameter portion to the minimum diameter portion.

A spring structure with adjustable hardness, the spring structure with the adjustable hardness includes a spring, an adjustment member, and a wrapping member, the wrapping member is used for wrapping the spring, the adjustment member is used for adjusting a pre-compression force of the spring, the adjustment member is disposed on one end of the spring to squeeze the one end of the spring, the adjustment member includes a rotating member, a moving member, and a support member, the moving member is movably mounted on the support member, the rotating member is connected to the support member by a linkage, the rotating member rotates to drive the support member to rotate, and the moving member moves up and down along the support member to squeeze the spring by rotating the support member.

A shock absorbing device comprises a shock absorbing device body, which comprises an upper shock absorbing cover and a lower shock absorbing cover, a primary shock absorbing element and a secondary shock absorbing element located on the outside of a circle of the primary shock absorbing element are arranged between the upper shock absorbing cover and the lower shock absorbing cover; a tower spring is matched with a plurality of shock absorbing silicones to effectively reduce the shock transfer between the upper shock absorbing cover and the lower shock absorbing cover; the upper shock absorbing cover and the lower shock absorbing cover are not directly connected with mother and child limit screws, but are connected with the mother and child limit screws through the shock absorbing silicones; a shock absorbing spring can assist the shock absorbing silicones to buffer the shock and shape the shock absorbing silicone.

A coil spring comprises a continuous wire forming a lowermost convolution, an uppermost convolution, and a plurality of helical intermediate convolutions. The coil spring is divided into an upper portion and a lower portion. The intermediate convolutions of the lower portion have a diameter greater than or equal to a lower minimum diameter, and the pitch between each of the convolutions of the lower portion is greater than or equal to a lower minimum pitch. The intermediate convolutions of the upper portion have a diameter greater than or equal to an upper minimum diameter, and the pitch between each of the convolutions of the upper portion is less than or equal to an upper maximum pitch. The upper minimum diameter is greater than, less than, or equal to the lower minimum diameter, and the upper maximum pitch is less than the lower minimum pitch to provide a non-linear and variable response.

According to an embodiment, a coil spring is formed of a wire wound in a helical shape, and includes an end turn portion and an effective portion. A surface of the wire in the end turn portion has a first area and a second area softer than the first area. Further, in a circumferential direction around an axis of the wire, the second area is formed over a range wider than that of the first area.

The invention provides a hardness-adjustable spring structure which comprises a spring, an adjusting part and a wrapping part, the wrapping part is used for packaging the spring, and the adjusting part is used for adjusting the pre-tightening force of the spring; the adjusting piece is arranged at one end of the spring and extrudes the end of the spring; the adjusting piece comprises a rotating piece, a moving piece and a supporting piece, the moving piece is movably installed on the supporting piece, and the rotating piece is in linkage connection with the supporting piece; the rotating piece is rotated to drive the supporting piece to rotate, and the moving piece moves up and down along the supporting piece under the rotation of the supporting piece and extrudes the spring; the spring structure solves the problems that according to an existing spring structure, the pre-tightening force of a spring cannot be adjusted at will, the hardness cannot be adjusted during use, and the function is single.

The invention relates to the technical field of vibration control, and particularly provides an ultralow-frequency passive self-adaptive tuning vibration absorber based on a string-mass system, which comprises a mechanical sensing assembly, a mechanical driving assembly, a mechanical transmission assembly and a tuning vibration absorption assembly which are arranged on a target structure, the mechanical sensing assembly and the mechanical driving assembly are correspondingly arranged, and the mechanical sensing assembly is used for sensing vibration of a target structure and can generate relative movement; the mechanical driving assembly is connected with the mechanical transmission assembly, and the mechanical driving assembly drives the mechanical transmission assembly to work based on relative motion generated by the mechanical sensing assembly; the mechanical transmission assembly is connected with the tuning vibration absorption assembly. The vibration absorber is wide in application range, compared with an existing self-adaptive tuning vibration absorber, the vibration absorber has the advantages that external power supply driving is not needed, the structure is simple, ultralow-frequency vibration control can be achieved, and effective control over broadband even multi-order modal vibration is achieved through a pure mechanical structure.

A magazine spring includes intermediate coils each having a first end portion, a second end portion, and a waist portion between the first end portion and the second end portion. The waist portion has a width that is less than a width of at least one of the first end portion and the second end portion. A magazine tube is also disclosed. In one example, the magazine tube is made of sheet metal and includes grip indentations formed along forward corners of the magazine tube. The magazine tube may also define locating ribs for blank cartridges. A magazine spring having the narrow waist portion can be included in the magazine assembly so that the spring clears the locating ribs.

The application belongs to the technical field of aerospace, weapon equipment buffering and energy absorption protection, and particularly relates to a spring-like superstructure capable of repeated and efficient buffering and energy absorption, which is formed by spirally winding hollow tubes or filling tubes with circular, square, hexagonal, concave negative Poisson's ratio, self-locking or other special cross-sectional shapes; by adjusting the distribution forms of geometric parameters such as the spiral angle, polar angle, number of turns, pitch, winding diameter, tube diameter and wall thickness of the structure, the mechanical properties of the structure can be regulated and controlled. Compared with conventional foam, honeycomb and other traditional energy absorption materials, the application can achieve the purpose of efficient buffering and energy absorption, and can achieve the effect of being reusable.

Present embodiments provide various open coil spring assemblies which perform like an encased spring assembly. The embodiments have elastic lacings or connections which connect springs to springs or springs to lacings. Various spring embodiments are provided as well as various arrangements for the elastic lacings. All of these features improve compliance and stability while reducing motion transfer.

Present embodiments provide various open coil spring assemblies which perform like an encased spring assembly. The embodiments have elastic lacings or connections which connect springs to springs or springs to lacings. Various spring embodiments are provided as well as various arrangements for the elastic lacings. All of these features improve compliance and stability while reducing motion transfer.

A manufacturing method of a resin molded member includes: an insert member molding step of building an insert member by stacking layers of a base resin containing continuous fibers by using a 3D printer; an aligning step of aligning the insert member in a cavity of an injection molding mold; and a resin portion molding step of molding a resin portion integrated with the insert member by filling an injection molding resin into the cavity, wherein the insert member is arranged on a surface of a weld portion by the resin portion molding step, and the continuous fibers in the insert member are oriented in direction crossing over the weld portion, the weld portion being formed in the resin portion.