48results about How to "Suppress lateral vibration" patented technology

In an elevator apparatus, an actuating device applies a tension for suppressing a lateral vibration to a rope. A computation controller controls the actuating device by using lateral-vibration information of the rope as an input. Also, the computation controller selectively outputs, to the actuating device, a plurality of actuating commands including a first actuating command for applying the tension to the rope regardless of phase information of the lateral vibration of the rope and a second actuating command for applying a tension fluctuation for damping the lateral vibration to the rope based on the phase information.

In a high-mounted double wishbone suspension device, an arm portion extending upward from a knuckle main body portion, through which an axle runs, is provided with a tie rod connection portion. A tie rod for turning a wheel is connected to the tie rod connection portion. The distance between the axle and the tie rod connection portion is increased to effectively suppress knuckle lateral vibration centered on the axle by the tie rod. Therefore, it is possible to reduce road noise without increasing the number of components or the weight. In particular, since the tie rod is connected to a joint provided on a lower face of the tie rod connection portion, it is possible to minimize vertical positional change of the tie rod, while suppressing lateral vibration of the knuckle by raising the position of the tie rod connection portion, whereby the arrangement can be easily applied to a conventional vehicle merely by replacing the knuckle alone.

A disk cutter including an annular disk-shaped base adapted to be driven about an axis of rotation, the base having a first thickness, a plurality of tip supports formed along the outer circumference of the base integrally therewith so that a gullet is defined between adjacent ones of the tip supports, a plurality of tip inserts respectively fixed to the tip supports, each of the tip inserts having a second thickness, and a plurality of thicker portion formed along a trailing end of each tip support in respect of rotation of the base, the thicker portion having a third thickness. The third thickness is greater than the first thickness and less than the second thickness.

A door roller mechanism for cooperation with a roller track including a carriage member having a door attachment feature; at least one roller disposed for rotation on a first side of the carriage member when the carriage member moves in the rolling direction; at least one roller disposed for rotation on an opposite second side of the carriage member when the carriage member moves in the rolling direction; a first rub member disposed on the first side of the carriage; a second rub member disposed on the second side of the carriage; and at least one biasing element disposed on the carriage member for resiliently biasing the first rub member and the second rub member in opposite lateral directions so as to contact a respective first track surface and a second track surface in a manner to dampen lateral vibration of a door connected to the roller mechanism.

The invention belongs to the field of rail transit damping and noise control and particularly relates to a damping device which is arranged on a non-working surface of a steel rail and is used for reducing vibration and noise generated due to steel rail compressing during a rail vehicle running process. The shearing type track damping noise reducing device comprises an upper shearing piece and a lower shearing piece. The upper shearing piece is in tight contact with or connected with rail sides. At least part of the lower shearing piece is connected with a steel rail wing plate. A damping layer is formed between the upper shearing piece and the lower shearing piece. The upper shearing piece and the lower shearing piece are fixedly connected integrally through the damping layer to form a damping sound barrier plate. The damping sound barrier plate at least covers part of the steel rail surface between the steel rail sides to the outer end of the steel rail wing plate. The shearing type track damping noise reducing device can absorb rail head vibration energy quickly, and meanwhile steel rail radiation noise can be lowered.

The invention provides a vibration reduction structure for a ball screw pair, and belongs to the technical field of damper vibration attenuation. The vibration reduction structure comprises the ball screw pair and damper units. A screw rod of the ball screw pair is a hollow screw rod, wherein the multiple damper units are distributed inside a cavity of the screw rod. Each damper unit is composed of a mass block, rubber rings and adjusting nuts. The two ends of each mass block are provided with the corresponding rubber rings which are fastened through the corresponding adjusting nuts. The mass block of each damper unit is fixed in one inner hole of the hollow screw rod in a supported mode through the corresponding rubber rings at the two ends, the supporting stiffness on each mass block by the corresponding rubber ring is changed through the adjusting nuts, as a result, the inherent frequency of all dampers is matched with the dynamic property of the ball screw pair, and the optimal vibration control effect can be achieved.

The invention discloses a vertical-adjustment vibration-reduction device and method of a chain freight cableway. The device comprises a vertical adjustment mechanism, a vertical driving mechanism, a cable supporting mechanism, a vibration signal acquisition module and a vibration controller. The vertical adjustment mechanism comprises an adjustment gear and an adjustment toothed bar which is in meshed connection with the adjustment gear, the vertical driving mechanism is installed at one end of a gear shaft of the adjustment gear, and the adjustment toothed bar is vertically installed on the cable supporting mechanism. The bottom of the adjustment toothed bar is fixedly connected with the cable supporting mechanism, the vibration signal acquisition module is installed on the cable supporting mechanism, the vibration controller is installed on the vertical driving mechanism, and the vibration signal acquisition module is in signal connection with the vibration controller. According to the method, after the controller receives and processes vibration signals of the load end of the cable supporting mechanism, the vertical adjustment mechanism is driven to move, vertical adjustment is carried out on the cable supporting mechanism, and vertical adjustment of vibration of the chain freight cableway is achieved. According to the chain freight cableway vertical-adjustment vibration-reduction device and method, service life of the chain freight cableway can be prolonged effectively, and safety and reliability of operation of a whole chain freight cableway system are improved.

An elevator controlling device can prevent depravation of riding felling of litter when operating normally, and can more reliably restrain transverse vibration of the movement connection body. The elevator controlling device (11) has a drive control section (14), a control mode switching section (12) and a calculation section (13). The drive control section (14) can switch between the general mode of restraining the variation frequency of the rotate speed of the drive pulley (7) in determined low-frequency band and vibration abatement mode of making the rotate speed varies to a frequency higher than the low-frequency band when varying the rotate speed of the drive pulley (7) in terms of wave. The control mode switching section (12) detects the transverse vibration of the main cordage (8),the control mode of the drive control section (14) is switched to the vibration abatement mode. The calculation section (13) calculates the signal counteracting the transverse vibration. The drive control section (14) control the rotation of the drive pulley (7) to restrain the transverse vibration based on the information from the calculation section (13) when in the vibration abatement mode.

The invention discloses a chain-type freight ropeway vibration attenuation device and method. The chain-type freight ropeway vibration attenuation device comprises a horizontal adjusting mechanism, a horizontal drive mechanism, a vertical adjusting mechanism, a vertical drive mechanism, a vibration signal acquisition module and a vibration controller; the vibration signal acquisition module is arranged on a chain-type freight ropeway rope carrying mechanism, and the vibration signal acquisition module is connected with the vibration controller; the vibration controller is respectively connected with the horizontal drive mechanism and vertical drive mechanism, the power output end of the horizontal drive mechanism is connected with the horizontal adjusting mechanism, and the power output end of the vertical drive mechanism is connected with the vertical adjusting mechanism; the rope carrying mechanism is arranged on the vertical adjusting mechanism, and the vertical adjusting mechanism is arranged on the horizontal adjusting mechanism. By adopting the chain-type freight ropeway vibration attenuation device, the lateral vibration energy of a rope carrying mechanism transmission chain can be greatly reduced, the excessively-large lateral vibration of the rope carrying mechanism transmission chain can be inhibited, the service life of the freight ropeway is effectively prolonged, the operation safety and reliability of the entire freight ropeway system can be improved, and the disastrous consequence can be maximally avoided.

The invention discloses a method for controlling lateral vibration of a high-speed train based on a magnetorheological damping model. A magnetorheological damper is arranged in a differential structure between the car body and the bogie of the high-speed train, which effectively overcomes the magnetorheological The impact of the initial compression or expansion state of the damper on the offset of the train; on the basis of the Bouc-Wen magnetorheological damping dynamic model and the dynamic model theory of high-speed trains, the magnetorheological model fitted with hyperbolic tangent function The time-delay variable between the speed and displacement of the damper, a complete and accurate nonlinear current control variable damping model of high-speed trains is proposed, and it is used to guide the current control of the magneto-rheological damper. The control characteristics are highly consistent, and finally the magnetorheological damper is electronically controlled by the second-order synovial film control method with high control accuracy, realizing the suppression of the lateral vibration of the high-speed train.

The invention discloses a moving slide rail, which comprises a first slide rail and a second slide rail slidingly sleeved in the first slide rail, a load-bearing mechanism is connected above the second slide rail, and a At least one positioning part, the bottom surface of the positioning part is provided with a first inclined surface inclined downward, the side wall of the positioning part is symmetrically provided with a second inclined surface inclined inwardly, and the end of the first inclined surface is connected with a fixing groove; The front end is provided with a long strip-shaped through hole, and the bottom of the long strip-shaped through hole is provided with a damping sheet and a top block. The damping sheet and the top block are connected with a connecting rod. There is an elastic compression mechanism, and the top block slides and fits with the elastic compression mechanism. The invention can improve the deficiencies of the prior art, and reduces the vibration when the slide rail is locked.