4results about How to "Avoid frictional contact" patented technology

This utility model relates to the field of semiconductor saturable absorber protection technology, specifically to a solid-state laser semiconductor saturable absorber packaging device, including a base, a SESAM body, a lens barrel, and a dustproof lens; one end of the lens barrel is sleeved on the outside of the dustproof lens, and the other end of the lens barrel is connected to the base; the SESAM body is disposed inside the lens barrel, and the SESAM body is connected to the upper end face of the base; by adding a lens barrel and a dustproof lens, the SESAM body is encapsulated and protected, isolated from the external environment, avoiding frictional contact between the SESAM body and external dust particles, preventing external environmental pollution, ensuring the service life of the SESAM body, and meeting practical application requirements.

This invention discloses an automated crop planting device for cuttings, relating to the field of agricultural machinery. It includes a planting cylinder and a lifting platform. The upper part of the planting cylinder has a seedling delivery component within a seedling separation chamber. Its trumpet-shaped support plate, with its wide opening facing upwards, accommodates seedlings. A concentric seedling separation plate at the bottom is driven to rotate by an independent motor. Mechanical single-plant separation is achieved through seedling holes and notches. Seedlings fall under gravity through the delivery tube into the lower cutting chamber. The rotation speed of the seedling separation plate is linked to the walking speed and the cutting frequency to ensure proper spacing between plants. The cutting chamber is equipped with an adaptive cutting component. Seedlings fall between a pair of synchronously rotating inward-facing conveying gears, and are elastically clamped by a tension spring to adapt to irregular shapes and avoid damage. Simultaneously, the V-shaped clamp of the vertical cutting component moves downwards to correct tilting, achieving precise vertical insertion of seedlings into the soil. This device realizes mechanical single-plant separation, elastic adaptive clamping, and vertical cutting, improving operational efficiency and survival rate.

The present invention relates to a side-channel compressor (1) for compressing a gaseous medium for a fuel cell system (2), the side-channel compressor having a housing having a first housing component (3) and a second housing component (4), wherein the first housing component (3) has a bearing journal (5) extending along a rotation axis (R), the bearing journal having a journal root section (6) and a journal main section (7), wherein a bearing inner ring (8) of a bearing device (9) is arranged on the journal main section (7), wherein the bearing device (9) has a first bearing (19) and a second bearing (20), wherein a compressor wheel structure assembly (10) is arranged on the bearing outer ring (11) of the bearing device (9) in a manner rotatable about the rotation axis (R). According to the invention, the compressor wheel assembly (10) has an additional cap-shaped sealing element (13) on its end side facing the second housing component (4), particularly on the first end face (30), which at least almost completely covers the bearings (19, 20) and / or the bearing assembly (9) in a manner orthogonal to the axis of rotation (R), wherein the cap-shaped sealing element (13) is at least indirectly connected to the hub (16), thereby enabling fluid encapsulation of the internal space (27) of the hub (16) relative to the environment (29) of the compressor wheel assembly (10). Furthermore, the invention relates to a fuel cell system (2) having a side-channel compressor (1) according to the invention.

The utility model discloses a double row tooth shock absorber technical field's a double row tooth shock absorber gear ring limit baffle, including shock absorber casing, the inside installation of shock absorber casing has double row gear, and the both ends of shock absorber casing are close to double row gear respectively and are provided with gear ring limit component, and the gear ring limit component includes limit baffle, and the one end of limit baffle is connected with output shaft, and the one end of limit baffle away from output shaft is provided with first connecting flange, the gear ring limit baffle of double row tooth shock absorber of this scheme design, through the structural design of baffle connecting cover and baffle adjusting groove, has realized the transition fit between limit baffle and shock absorber casing effectively, avoided the friction contact between limit baffle and double row gear, reduced the problem of excessive wear and heat accumulation, through the structural design of the sliding fit between sealing guide ring and annular guide groove, has further improved the stability of limit baffle, ensures that limit baffle does not occur position deviation under high -strength impact or vibration condition.