210results about How to "Reduce torsional vibration" patented technology

In an aspect, the invention relates to a decoupler that is positionable between a shaft (eg. for an alternator) and an endless power transmitting element (eg. a belt) on an engine. The decoupler includes a hub that mounts to the shaft, and a pulley that engages the endless power transmitting element, an isolation spring between the hub and the shaft. The decoupler provides at least a selected damping torque between the hub and the pulley.

The present disclosure utilizes deactivated cylinders in a variable displacement engine to control the torsional vibration of a crankshaft. In a deactivated mode, deactivated cylinders are compressed and expanded by a reciprocating piston, but they are doing no net work and still causing an oscillating torque on the crankshaft. The present disclosure utilizes this oscillating torque to counter torque from the active cylinders. This is done through controlling the gas pressure in the deactivated cylinders by using intake and exhaust values to equalize the pressure between the cylinder and ports. The optimum gas pressure in deactivated cylinders to minimize total torque fluctuations is approximately one-half that of the active cylinders. A closed control loop adjusts gas pressure in the deactivated cylinders to cancel out torque from the active cylinders.

The invention relates to an improved structure of a step-and-track-composite-type movable robot travelling system. According to the improved structure of the step-and-track-composite-type movable robot travelling system, a balance rocker arm hanger bracket of which the two sides are symmetrical is configured on an H-shaped chassis, and a work platform is placed at three fixing points of the balance rocker arm hanger bracket; a driving steering assembly driven by a linear travelling driving motor (54) and a steering travelling driving motor (76) is configured on the balance rocker arm hanger bracket and located on an H-shaped chassis outer bridge shell cross rod, and four supporting legs of the balance rocker arm hanger bracket are configured with joint track assemblies capable of achievingposture adjustment. According to the improved structure of the step-and-track-composite-type movable robot travelling system, the adaptability to a complex annular road surface is very high, and theflexible posture regulation and stable posture keeping capacity is achieved; the attaching profile modeling capacity of uneven complex ground automatic adaption is achieved, and disturbance of the uneven road surface on a vehicle is reduced; the weight loading capacity of the movable work platform is improved, and the stairway-climbing and obstacle crossing capacity is achieved; and through the four-wheel-driving mode, the vehicle cross-country capacity is improved, spot turn can be achieved, and the maneuverability is high.

A torsional vibration reducing device includes: a rotating body; an inertial body; a coupling member configured to transmit the torque to the rotating body and to the inertial body; and a first coupling portion and a second coupling portion, which are separately provided to either the rotating body or the inertial body The first coupling portion engages with the coupling member so as to: restrict movement of the coupling member in a rotational direction of the rotating body; and allow movement of the coupling member in a radial direction of the rotating body. The second coupling portion engages with the coupling member such that when the rotating body and the inertial body rotate relative to each other, a contact portion of the coupling member with respect to the first coupling portion moves in the radial direction of the rotating body.

The invention relates to a torsional vibration absorber for a main decelerator, and belongs to the technical field of automobile manufacturing. A vibration absorber substrate has a tubular structure, the front end of the vibration absorber substrate is provided with a flange which is provided with a flange connection hole, an inner hole of the vibration absorber substrate is a stepped hole, a spline is arranged in one end of a minor diameter of the stepped hole, the front and the back outside the vibration absorber substrate are provided with an axial limit plate respectively, and a rubber layer is placed between the front axial limit plate and the back axial limit plate. Fixed outer rings are sleeved outside the rubber layer, the front axial limit plate and the back axial limit plate. A first quality loop and a second quality loop are wrapped in the rubber layer from inside to outside. Through adjusting shape and amount of the inner quality loops of the vibration absorber, parameters of rubber, and the like, the vibration absorber restrains torsional vibration peak values under a plurality of frequencies, replaces a shaft end flange or a similar structure at an input shaft of the main decelerator, connects a universal joint at an output end of a transmission shaft and the input shaft of the main decelerator to transfer force, has little alteration on the structure of a vehicle, and is convenient to mount and use.

The invention discloses a vibration damper assembly, which comprises a shock absorber mounting shaft, a spoke and a hub. A belt wheel having the function of an inertia disc is arranged outside the hub through a second-stage rubber ring, and is provided with a second-stage inertia ring. The shock absorber assembly is characterized in that the front end of the hub is connected in parallel with a first-stage rubber ring and a first-stage inertia ring. In order to eliminate the vibration caused by first-order vibration frequency of a crank, the first-stage rubber ring and a first-stage inertia ring form a torsional vibration damper consistent with the first-order vibration frequency of the crank. The first-stage inertia ring is arranged in the second-stage inertia ring. Because parallelly-connected two-stage vibration damper is adopted, and two stages of inertia rings are used, the working frequency of the vibrator damper is effectively reduced, the hardness of the rubber can be controlled in a certain range, and the service life of the crank of an engine is improved and the vibration and noise of the engine are reduced under the action of the vibration damper consisting of the two stages of inertia rings.

The invention discloses a telescopic step-by-step layered buffering vehicle bumper, and belongs to the field of vehicle bumpers. The bumper comprises a bumper shell assembly, an energy absorption block, a bumper beam, a bumper support, a first-stage buffer mechanism, a second-stage buffer mechanism, a valve base assembly and a bearing plate. The primary buffer mechanism comprises a first support,a second support and a plurality of spiral springs; the first-stage buffer mechanism can ensure that the bumper absorbs energy during torsional vibration rotation. Therefore, overlarge torsional vibration and impact amplitude in impact are attenuated; a common amplitude value of a resonance region in impact is inhibited and a large torque is transmitted; even if the collision direction of the external force is uncertain, when the vehicle bumper is collided, multi-stage buffering can be carried out through the two-stage buffering mechanism, that is to say, the two-stage buffer mechanism can convert the vertical impact load into the horizontal transverse impact load, and can buffer the horizontal transverse impact load to play an important role in improving the impact energy absorption effect, improving the vehicle collision safety and protecting pedestrians.

The invention relates to a novel hydraulic oscillator with energy gathering and damping functions. The novel hydraulic oscillator is fixedly mounted in the position close to a drill bit and comprises a damping assembly, a transmission assembly and an oscillating assembly. The oscillating assembly is mounted at the front end of the transmission assembly. The damping assembly is mounted at the rear end of the transmission assembly. Vibration generated on an upper tool by the oscillator during operating is absorbed through multiple stages of vibration absorption rings; bit pressure and torque are transmitted through a disk spring and splines, and the disk spring and the splines are connected in series. When flowing through a flow guide pipe, drilling fluid flows into a pressure chamber through flow guide holes in the circumference of the flow guide pipe and then flows back to a central flow channel, pressure pulsation of the drilling fluid fluctuates, and the oscillating assembly generates an oscillating effect. The novel hydraulic oscillator with the energy gathering and damping functions can generate the oscillating frequency of a certain range to reduce friction drag borne by a drilling tool in the rock breaking process of the drill bit, automatically absorb vibration and reduce the influence of the oscillating assembly on the upper drilling tool during operating, so that the well drilling efficiency is improved.

The invention provides a transmission shaft and an automobile applying the transmission shaft. The transmission shaft comprises a flange and a cross-shaped shaft which are connected in a matching way, wherein the cross-shaped shaft is connected with a shaft fork; the shaft fork is in butt joint with a transmission block in a matching way; a torsion spring is arranged on the outer sides of the shaft fork and the transmission block in a sleeving way; a shaft tube is arranged on the outer side of the torsion spring in a sleeving way through the transmission block; the shaft fork can rotate relative to the transmission block, and is used for driving the torsion spring to be deformed in the shaft tube. By adopting the transmission shaft and the automobile applying the transmission shaft, the problem that the torsion vibration of the transmission shaft cannot be effectively lowered in the prior art is solved.

An assembly operable to be used with a steering wheel of a vehicle and to suppress a vibration transmitted to the steering wheel includes a plurality of support flexures and an inertial ring attached to the support flexures. The support flexures are operable to be attached to the steering wheel and the support flexures and the inertial ring are tuned to suppress a vibration at a predetermined band of frequencies. The support flexures and the inertial ring are positioned in an annular cavity formed in the rim.

A lift truck includes systems and methods for improved vibration control. A corrective yaw input mechanism reduces or eliminates torsional vibration motion of the lift truck about the Z-axis. Some embodiments may include, alone or in combination, drive wheel control and load wheel control.

A torque transmission device for a powertrain of a motor vehicle has an input area and an output area. A torque path runs from the input area to the output area. A torsional vibration damping unit is positioned first, followed by a gear unit, along the torque path between the input area and the output area. The torsional vibration damping unit provides a first spatial area and an adjoining second spatial area along the torque path, and the gear unit provides an adjoining third spatial area.

The invention relates to a hybrid module for a motor vehicle power train, comprising an input side for connecting to an internal combustion engine, an output side for connecting to a drive wheel, an electric drive motor comprising a stator and a rotor and a torque transfer device is arranged between the rotor and the output side. Said transfer device is designed to reduce rotational irregularity.

A wet clutch for a motorcycle having an outer basket having a first toothing as the input side of the wet clutch, an inner basket which is coaxial to the outer basket having a second toothing as the output side of the wet clutch, first frictional elements which are torsionally connected to the outer basket, second frictional elements which are torsionally connected to the inner basket, the first and second frictional elements being situated axially alternating between the inner basket and the outer basket, and a clamping element to compress the first and second frictional elements axially in order to produce a torsional connection between the input side and the output side. The inner basket and/or the outer basket can essentially be produced from one or more sheet metal parts.

The invention discloses an anti-seizing tool capable of avoiding drill clamping and reducing sticky slipping to solve the problem that the rock breaking efficiency is low due to clamping and slipping in the drilling process. According to the main technical scheme, an upper connector, an upper shell, an adapter and a lower shell are sequentially connected through a thread; a compression spring is mounted on a compression spring guide rod, the low end of the compression spring guide rod pushes an anti-falling connector to enable a mandrel to stretch, and the anti-falling connector is connected with a mandrel thread and axially positioned through an adapter shaft shoulder; a steel wire rope system is arranged in a left-rotation mode, the upper and lower ends of the steel wire rope system are separately fixed to the lower end of the adapter and fixed into a circular groove in the upper end of a mandrel boss, the upper and lower ends of steel wire ropes are mounted by 30-40 degrees in an inclined mode, and the steel wire ropes are in a tensional state initially; during work, drilling pressure is transferred to the mandrel through the compression spring, and torque is transferred to the mandrel through the steel wire rope system; and when the mandrel rotates backwards, the steel wire rope system retracts to enable the mandrel to compress the compression spring to axially retract so as to decrease the cutting depth of a drill bit, and the drill bit is in a rock mass in the whole process.