5results about How to "Ensure vibration" patented technology

The embodiment of the utility model provides a gearbox control valve vibration test tool, and the tool comprises a vibration table which comprises a first body, and the first body comprises two side walls which are disposed away from each other; the supporting assembly comprises a bottom plate, an elastic piece and a limiting column, the bottom plate is arranged below the first body in the third direction, the bottom plate and the first body are arranged in a spaced mode, the elastic piece is connected between the first body and the bottom plate, and the limiting column is connected to the bottom plate and is in clearance fit with at least one side wall; the driving assembly is used for driving the first body to move towards the bottom plate in the third direction; in the process that the first body moves towards the bottom plate, the first body compresses the elastic piece, the elastic piece generates restoring force, and under the condition that the driving assembly is away from the first body, the restoring force drives the first body to vibrate in the third direction. The vibration test tool in the embodiment of the utility model can more accurately simulate the real vibration working condition of the gearbox, so that the accuracy of the performance test result of the control valve under the vibration working condition is improved.

The application discloses a loudspeaker and an electronic device, and belongs to the technical field of electronic devices. The loudspeaker comprises a support, a diaphragm, a voice coil, a driving magnet and a flexible circuit board. The diaphragm comprises a fixed part, a ball top part and a folded ring part. The fixed part is connected with the support, and the ball top part is connected with the fixed part through the folded ring part. The voice coil is connected with the ball top part. The driving magnet is installed on the support and is used to drive the voice coil to drive the ball top part to vibrate. The voice coil and the driving magnet are located on a first side of the diaphragm, and the flexible circuit board is located on a second side of the diaphragm. The flexible circuit board is installed on the support, and the voice coil is connected with the flexible circuit board. The flexible circuit board is used to at least supply power for the voice coil.

This application discloses an assembled ball cage cage, employing a modular, split-type architecture. It includes multiple cage units and two sets of retaining rings. Each cage unit is circumferentially assembled to form a cage body with concentric inner and outer spherical surfaces. The cage body has circumferentially distributed openings. The retaining rings achieve axial positioning and locking of the cage body. After connecting to the cage body, the end face of the retaining ring is parallel to the long side of the opening. Through the combination of multiple cage units and two sets of retaining rings, the modular design allows for the replacement of only damaged cage units, reducing maintenance costs. The cage units can be mass-produced, further reducing manufacturing costs. The assembled units form precise concentric spherical surfaces, ensuring the stability of the steel ball's trajectory and reducing vibration and noise. The parallel design of the retaining rings to the end face of the cage body ensures uniform force distribution on the long side of the opening, avoiding increased friction due to axial misalignment. By replacing individual units, the overall service life of the cage is extended.

The utility model discloses a safe transfer device for liquefied natural gas, which particularly relates to the technical field of transfer and comprises a transfer component, a damping component is fixedly connected to an inner cavity of the transfer component, a protection component is fixedly connected to the upper portion of the damping component, and a sealing component is rotatably connected to an inner cavity of the protection component. The left portion of the protection assembly is fixedly connected with a moving assembly, and an inner cavity of the protection assembly is slidably connected with a taking-out assembly. According to the liquefied natural gas safe transfer device, impact and vibration in the transportation process can be reduced through the designed transfer assembly and the designed damping assembly, so that the risk of damage and leakage of a tank body is reduced, the overall transportation safety is improved, impact force generated in the transportation process can be absorbed and dispersed through a damper, and the transportation safety is improved. The tank body is prevented from directly bearing overlarge force, so that the tank body structure is protected from being damaged, the service life of the tank body is prolonged, and the maintenance and replacement cost caused by the damage of the tank body is reduced.

A kind of tilting-pad radial partial load bearing for ultra-supercritical steam turbine unit.It relates to the field of steam turbine unit sliding bearing.When existing actual load is inconsistent with design load, it leads to uneven temperature of left and right pads, insufficient oil film thickness, and easily causes wear and vibration problems.The tilting-pad radial sliding bearing includes bearing shell, upper supporting pad, lower supporting pad, stop pin, gasket set, cylindrical gasket, adjusting gasket, supporting pin, spring, oil seal ring, check valve, oil baffle, oil injection port.The supporting part adopts four-pad tilting-pad structure, and the relative position of fulcrum of pad is LC / L=0.6 (LC is the arc length of fulcrum position of pad, and L is the arc length of pad).Eccentric support is realized by the angle of deflection pad and bearing center line, and the deflection angle A is 7.5°.The utility model is applied to tilting-pad radial partial load bearing for ultra-supercritical steam turbine unit.