Abstract:
The present disclosure provides vibratory compactor comprising an active isolation apparatus for reducing a vibration generated during the rotation of an eccentric shaft having an eccentric weight attached thereto. The active isolation apparatus comprises a drum, a propulsion motor configured to rotate the drum, a drive plate disposed between the propulsion motor and the drum in such a way as to be connected to the propulsion motor to transmit a rotating force to the drum, and a drum support configured to rotatably support the drum. The active isolation apparatus further comprises a first active isolation mass disposed between the drum support and the drum, a second active isolation mass disposed between the drive plate and the drum, an eccentric shaft configured to be rotated while penetrating through the first active isolation mass, the drum, and the second active isolation mass, a primary eccentric weight attached to the eccentric shaft inside the drum, an active isolation eccentric weight attached to each of the eccentric shaft inside the first active isolation mass and the second active isolation mass, and a vibration motor configured to rotate the eccentric shaft. In accordance with the active isolation apparatus of the present disclosure, when the eccentric shaft is rotated, a phase of a vibration generated by the active isolation eccentric weights is opposite to that of a vibration generated by the primary eccentric weight, and the vibration generated by the active isolation eccentric weights cancels the vibration generated by the primary eccentric weight.
Abstract:
The present invention relates to a vibro hammer; which is mounted on parts such as steel formed pipes and profiles and used in driving and extracting these parts to and from the soil, and is able to rotate without resonance; and which, by means of the transmission device whose main parts are the stepped shaft, toothed piston and transmission body, performs phase change between the upper weight set and lower weight set with fewer parts.
Abstract:
A bed vibration system to provide controllable vibrations beneath a mattress, which is located on a bed, the system comprising: a frame attachable to the bed by at least four suspension modules; at least two vibration modules, each vibration module having a rotatable element; at least two travel tracks attachable to the frame, the travel tracks configurable to have the at least two vibration modules respectively displaceable thereupon; and a vibration module control unit configurable to control vibrations and displacement of the respective vibration modules.
Abstract:
Изобретение относится к области транспортной техники и может быть использовано в различных отраслях хозяйственной деятельности. Устройство содержит корпус, три центробежных вибровозбудителя направленного действия с приводами дебалансов этих вибровозбудителей, три коромысла, три шарнира, одну ось, устройство принудительной синхронизации, устройство удержания коромысел в заданных секторах их вращательных колебаний, устройство регулирования величины силы инерции. Два вибровозбудителя и два коромысла одинаковые. Третье коромысло соединено с одной стороны через шарнир с осью, а с противоположной стороны оно соединено жестко с корпусом вибровозбудителя. Вибровозбудители сориентированы относительно соответствующих коромысел с возможностью совершения вращательных колебаний вместе с коромыслами под действием направленных центробежных сил инерции. Одинаковые вибровозбудители совершают вращательные колебания, направленные в противоположную сторону по отношению к третьему. Изобретение предназначено для получения силы инерции, направленной в одну сторону, действующей без силового взаимодействия с окружающей средой и без потери массы.
Abstract:
A mobile device includes a vibrator, an accelerometer (103) that senses a parameter of rotation, and a processor. The vibrator (104) includes a drive motor (107) and a drive circuit. The accelerometer (103) senses a speed of rotation of the vibrator. The processor (101) analyzes the sensed speed of rotation and generates a drive voltage that is received by the drive circuit (106) to adjust the drive motor (107) to produce a pre-determined, desired rotational speed. In another embodiment, the accelerometer (103) senses an amplitude of a vibration produced by the vibrator. The processor (101) analyzes the sensed amplitude of a vibration and generates a drive voltage that is received by the drive circuit (106) to adjust the drive motor (107) to produce a pre-determined, desired vibration amplitude. The processor (101) may also compare the sensed parameter with a pre-determined desired parameter of rotation and generate a signal responsive to a result of the comparison and based on stored vibrator calibration curves.
Abstract:
A sample handling device (100) for handling a sample, the sample handling device (100) comprising a drive shaft (101) being drivable by a drive unit (102), a base plate (103) mounted to follow a motion of the drive shaft (101) when being driven by the drive unit (102), wherein the base plate (103) is configured to receive a sample carrier block (104) mountable to follow a motion of the base plate (103), and a compensation weight (105, 106) mounted asymmetrically on the drive shaft (101) in a manner to at least partially compensate an unbalanced mass of the sample handling device (100) during the motion.
Abstract:
A vibrator assembly includes an electric motor (32), a shaft (38) driven by the motor (32), and a cylindrical weight (40) coaxially positioned on the shaft free end (38a), wherein the cylindrical weight (40) has a center of gravity that is radially offset from the shaft axis. The cylindrical weight (40) includes a first portion that is lighter in weight than a second portion. When the vibrator assembly is installed within an electronic device, the cylindrical shape of the weight (40) limits the amount of shaft deflection that can occur when the electronic device is dropped or subjected to other impact forces.
Abstract:
A small-sized vibrating motor, comprising a cup-shaped external case (15) having a rise tube (15b) installed at the center of a closed face (15c), wherein a stator and a rotor are stored in the external case (15) from one shaft end of a shaft (1) for assembling a brush stand (10) thereto, the other shaft end of the shaft (1) is fitted into the tube of the rise tube (15b) from the inside of the external case (15), the external case (15) is positioned parallel with the shaft (1), the brush stand (10) is fitted from the opening side of the external case (15), and the external case (15) is fixedly held by the shaft (1) and the brush stand (10).