35results about How to "Increase frictional damping" patented technology

The disclosed seismic isolation bearing includes an upper base plate, a lower base plate, a disc bearing core, and at least one shear spring. The upper and lower base plates each have an upper surface and a lower surface. The disc bearing core is centrally positioned with respect to the planes of the upper and lower base plates and is in contact with the lower surface of the upper base plate and the upper surface of the lower base plate, where the disc bearing core allows the lower surface of the upper base plate to slide along the disc bearing core. The shear spring is coupled to the lower surface of the upper base plate and the upper surface of the lower base plate, deforms in shear upon lateral movement of the upper base plate relative to the lower base plate, and exerts a lateral return force on the upper base plate when laterally displaced.

The invention discloses a comb tooth self-cleaning type dustpan which comprises a dustpan hopper body, first comb teeth and a rotating beam are arranged on the dustpan hopper body, a cleaning part isarranged on the rotating beam, and the cleaning part can move along with the rotating beam and is inserted into gaps between racks of the first comb teeth or disengaged from the gaps. The dustpan notonly can automatically clean hair, fibers and other silks adhered to the comb teeth, but also can be naturally realized in the dustpan operation process, and no special cleaning action is needed, so that the use is more convenient.

The invention discloses a double-brake back-and-forth controllable descent control device. The double-brake back-and-forth controllable descent control device comprises an outer shell, a pulling mechanism, a double-brake mechanism and a rope guiding mechanism, wherein the pulling mechanism, the double-brake mechanism and the rope guiding mechanism are arranged in the outer shell; the pulling mechanism is mutually linked with the double-brake mechanism and comprises an energy conversion regulating screw rod and a buffer piece which is arranged at the periphery of the pulling mechanism; the double-brake mechanism comprises an outer brake assembly, an inner brake assembly and a self locking mechanism, the inner brake assembly is mutually linked with the energy conversion regulating screw rod of the pulling mechanism, a wedge wheel is arranged at the periphery of the inner brake assembly, a steel wire rope is wound on the wedge wheel and is in rolling friction, and the self locking mechanism is movably arranged between the outer brake assembly and the outer shell in a leaning way; when the outer brake assembly is in an unstressed state or a maximum stress state, the inner brake assembly is in a semi-brake state to generate friction damping, and the steel wire rope wound on the peripheral wedge wheel can be tensioned and locked; when the outer brake assembly is in a semi-clutch state, the inner brake assembly and a brake hub are in a friction state by the locking of the inner brake assembly on the steel wire rope, the steel wire rope is enabled to be guided out along the rope guiding mechanism by friction force difference, and slow and uniform-speed descending can be realized.

The invention provides a spherical surface TMD (Turning Mass Damper) shock absorption control device, which comprises a bottom plate component and a mass block component glidingly matched with the bottom plate component, wherein the weight of the mass block component is m; the top of the bottom plate component is provided with N concave spherical surfaces; the bottom of the mass block component is provided with N convex spherical surfaces glidingly matched with the concave spherical surfaces; the concave spherical surfaces and the convex spherical surfaces have the identical spherical surface radius R; a sliding friction pair is arranged between the convex spherical surfaces and the concave spherical surfaces; and a damping device is arranged between the mass block component and the bottom plate component. The spherical surface TMD shock absorption control device has the advantages that the additional damping can be increased through setting different friction factors; meanwhile, through a single pendulum simple harmonic moving principle, an elastic element of a traditional TMD is replaced; the design is scientific; the structure is compact; the operation and the use are convenient; the problems that for the existing TMD technology, the manufacturing cost is high, a greater installation space is needed, a structural element can be easily damaged, and the like can be solved; and the spherical surface TMD shock absorption control device is particularly applicable to the control of low-frequency vibration of a structure.

The invention provides a damping type precision machine tool adjustment pad iron, comprising: the barreled quick adjustment sleeve is sleeved in the base, the quick adjustment sleeve is fixed on the base; the quick adjustment sleeve is fixed at the top opening There is an elastic gasket, and a spherical support seat is arranged above the elastic gasket; after the bottom end of the adjustment bolt passes through the center of the spherical support seat and the elastic gasket in turn, it is fixed by an arc fixed sleeve; The middle part of the elastic washer is pressed and depressed into an arc shape by the spherical support seat, and the edge of the elastic washer extends to the edge extension of the top opening of the quick adjustment sleeve and is then fixed; the adjusting bolt is threadedly connected with the spherical support seat; The diameter of the through hole through which the elastic gasket is passed by the adjusting bolt is larger than the diameter of the adjusting bolt; the support plate is vertically threaded with the adjusting bolt. The invention overcomes the defects that when the level of the ground is poor, the backing iron of the machine tool may cause additional force on the machine tool, and the position of the machine tool may change due to long-term use.

A double-brake back-and-forth controllable descent device, including an outer shell and a lifting mechanism built in it, a double braking mechanism and a guide rope mechanism, the lifting mechanism and the double braking mechanism are linked to each other, and the lifting mechanism includes energy Convert the adjustment screw and set the outer peripheral buffer. The double brake mechanism includes an outer brake assembly, an inner brake assembly and a self-locking mechanism. The inner brake assembly is linked with the energy conversion adjustment screw of the lifting mechanism. The inner brake assembly There is a wedge wheel on the outer periphery, and a steel wire rope is wound on it for rolling friction. The self-locking mechanism can be movably resisted between the outer brake assembly and the housing. The brake assembly is in the semi-braking state to produce frictional damping, and the wire rope wrapped around the outer peripheral wedge wheel is tightened and locked. When the outer brake assembly is in the half-clutch state, the inner brake assembly locks the wire rope and the brake hub. In the state of friction, the friction force is poor so that the steel wire rope can be drawn out along the guide rope mechanism to achieve slow and uniform descent.

The invention discloses a power cabinet with a nonlinear damping platform, comprising a power cabinet body composed of hot-dip galvanized lace angle iron and a sheet metal skin, the bottom of the power cabinet body is embedded with an upper opening cavity structure The base of the power cabinet is equipped with an organ-shaped damping unit at the center of the bottom of the base. The damping unit can efficiently consume vibration energy in multiple directions. Multiple nonlinear damping units are set around the bottom of the base of the power cabinet. , the nonlinear damping unit uses flexible hinges to improve sensitivity and stability. The four parts of the damping ring in the nonlinear damping unit are connected by longitudinal flexible hinges and transverse flexible hinges to play the role of the link frame. The link frame structure is folded The non-linear stiffness vibration isolation effect is generated between the shrinkage and elastic elements. The power cabinet base, the damping shock-absorbing unit and multiple nonlinear shock-absorbing units are combined into a nonlinear shock-absorbing platform, which is designed through a nonlinear structure. It has good bearing capacity and stability.

The invention discloses a mechanical pressure sensing locking safety device, which comprises an induction head, a locking mechanism and a guide sleeve; two ends of the guide sleeve respectively form a corresponding guide hole, and a latch rod passes through the guide hole inserted into the guide sleeve; the induction head is connected to the guide sleeve and cooperates with the guide sleeve to form an installation space, and the locking mechanism is arranged in the installation space and connects the induction head and the The latch rod, the induction head and the locking mechanism cooperate to control the axial locking and unlocking of the latch rod. Due to the use of a mechanical pressure sensing locking safety device of the present invention, it has compact structure, reliable execution, convenient installation, and is suitable for occasions with sanitary requirements, passive sites and explosion-proof requirements. High security, responsive, automatic locking and unlocking features.

The invention discloses a high-effect dry friction damping spring vibration isolator and aims at providing a friction damping vibration isolator which is compact in structure, large in friction damp, high in load and good in environmental adaptation. According to the technical scheme, in a vibration environment, left friction pieces and right friction pieces of a disc-pressing upper cone spring (3) and a disc-pressing lower cone spring (6) perform reciprocating motion to axially extrude a right friction ring piece (4) and a left friction ring piece (9) on two sides, the left friction ring piece, the right friction ring piece, an upper guide umbrella disc (1) and a lower guide umbrella disc (5) are driven to perform constant friction motion on the inner wall of a housing (2), vibration mechanical energy is converted into heat energy so as to achieve vibration energy consumption and reduction. The high-effect dry friction damping spring vibration isolator utilizes low frequency of a conical spring and a damping characteristic of a symmetric semi-ring damping pad, can effectively inhibit spring fluctuation during high-frequency impact, also has composite multiple vibration isolation effect and has large damp under the low-frequency condition compared with a traditional rubber vibration isolator.

The invention relates to the technical field of flywheel energy storage, and provides a flywheel protection structure and an energy storage system. The flywheel protection structure includes a shaft assembly, including a flywheel arranged in a housing and a rotating shaft fixedly connected to the flywheel. The rotating shaft and the flywheel Coaxial arrangement; the end surface of the flywheel is connected with a limit protection end arranged around the rotation shaft, and there is an accommodation space between the limit protection end and the rotation shaft; the fixed seat is arranged around the rotation axis, including a space extending into the accommodation space The support end; the elastic protection structure is located between the support end and the limit protection end, one end is connected to the support end, and the other end rubs against the side of the limit protection end facing the rotating shaft. The flywheel protection structure provided by the present invention, when the unbalance of the flywheel increases suddenly or the operating conditions change greatly, so that the vibration amplitude of the flywheel increases, the limit protection end and the elastic protection structure have flexible collision friction, which avoids the flywheel and the elastic protection structure. The direct friction of the shell will cause the flywheel to be unstable and damaged.

A method and system for increasing damping capacity utilizing dry friction between individual wires of a rope embedded in a component formed from a composite is illustrated. The individual wires allow inter-wire friction to occur during part vibration. The component includes a body that is a molded matrix formed form a composite material. The body may be of any material selected from the group consisting of a polymer, a metal or a ceramic material. One or more vibration-damping ropes are embedded in the body. The vibration-damping ropes may be elongated segments or may be a rope having connected ends that form one or more rings. Each vibration-damping rope includes an outer layer of wires that surrounds a plurality of inner wires. Inflowing composite material is prevented from passing by the outer layer of wires and into the inner wires during the manufacturing process, thereby forming voids between the inner wires.

A method and system for increasing damping capacity in cast metal parts by utilizing dry friction between individual wires of a sheathed rope is disclosed. The rope is embedded into the part during casting. Sheathing the ropes in a thin layer of the same metal as the casting prevents molten metal from infiltrating individual wires during casting, thus allowing inter-wire friction during the part vibration. There are two ways to distribute the ropes within a part during casting. The first way is to distribute the ropes uniformly across an entire part whereby damping capacity of the metal part increases uniformly as well. The second way of distributing the ropes is to spatially distribute them according to a pattern to increase the damping capacity only in the part regions that have the highest vibration amplitudes or stress during system vibration. Both methods of distribution may be combined in a single part.

The invention relates to a variable friction damping vibration isolator with adjustable center position, which belongs to the field of vibration isolators for electronic equipment, and solves the problem that the existing vibration isolator cannot adjust the center position of variable friction damping when the actual weight of the load is different from the vibration isolation When the rated load capacity of the vibration isolator is different, the vibration center of the vibration isolator deviates from the center position of the low friction damping force of the damping spring sheet, thereby weakening the vibration isolation ability of the vibration isolator to the high frequency vibration load. The variable friction damping vibration isolator of the present invention comprises: a base, a circlip, a friction guide rail, an upper cover, a load mounting seat, a friction pressure spring, a friction head and a main vibration isolation spring; the friction guide rail and the circlip pass through the friction guide rail height adjustment cone The upper cover is pressed on the friction guide rail. The present invention adjusts the pre-tightening force of the upper cover so that the center position of the friction guide rail can move up and down, thereby realizing the adjustment of the center position of the vibration isolator.