10results about How to "Small rotation angle" patented technology

The application discloses a disturbance type convection device. The device comprises a shell, a flow guide assembly, a disturbance assembly and a driving assembly. The shell is provided with a fan at one end and a nozzle at the other end. The flow guide assembly comprises a partition and a flow guide plate, and separates the shell into independent sub-chambers. The disturbance assembly comprises a rotating shaft and a rotating plate. The driving assembly drives the rotating plate to switch between a first position and a second position. In the first position, the rotating plate closes the gap, and the airflow flows to the nozzle through the main channel between the flow guide plates. In the second position, the rotating plate opens the shunt channel, and part of the airflow forms a reverse airflow opposite to the main airflow direction through the guide to offset the main airflow. The application realizes pulsed injection and disturbance offset of the airflow through the periodic switching of the rotating plate, eliminates the residual wind during the disturbance by using the reverse airflow offset principle, solves the problems of incomplete obstruction and slow response of the traditional vortex ring device, and realizes high-frequency and clear vortex ring output.

The invention relates to a wiper blade (10) for cleaning a vehicle windshield (FS), having a wiper blade body (12) which extends along a longitudinal axis (22), having a wiper blade adapter (15) which is connected to the wiper blade body (12), the wiper blade adapter having a first adapter element (16) which is connected to the wiper blade body (12) and a second adapter element (18) which is connectable to a wiper arm (1), wherein the two adapter elements (16, 18) are arranged such that they can be pivoted relative to one another in a rotational axis (20) in a direction which extends perpendicular to the longitudinal axis (22), and wherein the wiper blade (10) has a flat configuration.

The present application relates to the technical field of tracking support, especially to a photovoltaic tracking support with limiting protection function, comprising a torque tube, a connecting bridge, a support seat, a support arm, a lock head, a clamp, a purlin, a first stand, a second stand, a driving mechanism and a crank, the second stand is used for installing the driving mechanism, the support seat is fixedly installed on the top of the first stand through a stand adapter, adjacent torque tubes are fixedly combined through the connecting bridge to form a continuous structure in the length direction of the torque tube, the support arm is integrally formed with the support seat, the second hanging part on the top of the support arm is aligned with the first hanging part on the connecting bridge, the connecting bridge is hung and rotated on the support arm through the cooperation of the rotating shaft, the lock head is rotatably installed on the connecting bridge, when the driving mechanism drives the torque tube to rotate, the torque tube drives the connecting bridge to synchronously rotate on the support arm, and then drives the lock head to synchronously rotate, thereby reducing the response time of the tracking support rotating to the protection angle, and improving the structural safety and wind resistance.

The application relates to a flange pipe integrated processing device. The device comprises a rack, an outer die movably arranged on the rack, a forging table fixedly arranged on the rack and an inner rod rotatably arranged on the rack. The forging table is located at the limit position of the outer die movement, and the outer die and the inner rod are oppositely located on both sides of the forging table. A blank is arranged on the forging table close to one side of the outer die. The outer die reciprocally moves to act on the outside of the blank, and the inner rod rotates to act on the inside of the blank. The problems that welding processing leads to welding defects of the flange pipe and forging processing cannot be applied to batch production in the prior art are solved.

The invention relates to the technical field of helicopter rotor systems, in particular to a helicopter rotor flapping limiting device which comprises a propeller hub, and a flapping limiting mechanism, a range adjusting mechanism and a double-limiting latch hook mechanism are arranged on the surface of the propeller hub in an annular array with the propeller hub as the circle center. The double-limiting lock hook mechanism comprises a first lower waving limiting lock hook, a limiting support, a second lower waving limiting lock hook, a limiting block, an extension spring and a centrifugal balancing weight which are arranged on the surface of the waving limiting mechanism. When the rotor rotates at a high speed, centrifugal force drives the centrifugal balancing weight to move, the pulling force of the extension spring is overcome, the limiting support rotates, and the first downward-waving limiting lock hook and the second downward-waving limiting lock hook are separated from the initial positions, so that the paddles can freely wave to achieve pneumatic efficiency and operation flexibility, and therefore the double lock hooks are unlocked and closed at different speeds and stages; the overcoming process of centrifugal force is divided into two stages, the action of the lock hook is in a small-angle and slow-stroke gradual change mode, the impact load is reduced, and the action stability is improved.

The application discloses a cartridge switching valve for peritoneal dialysis, a flow channel switching method and a cartridge. The switching valve comprises a rotating valve body. Flow channels in the cartridge are uniformly arranged along the circumferential direction of the rotating valve body. A plurality of valve body flow channels are formed in the rotating valve body and are matched with the flow channels arranged in the cartridge. The number of the valve body flow channels is matched with the number of the connection mechanisms of the flow channels in the cartridge. The connection mechanisms are determined by the interval angle of two flow channels connected with each other in the cartridge. The connection of the two flow channels in the corresponding cartridges is realized by rotating the valve body flow channels to the corresponding positions. The application can realize the quick switching of the flow channels. During the switching process, only the rotation angle of the rotating valve body needs to be controlled, without the complicated control logic. The structure and the control process of the cartridge can be effectively simplified, and the failure rate is reduced.

The invention relates to the technical field of photovoltaic tracking supports, in particular to a locking mechanism and a tracking support, and the locking mechanism comprises a locking piece which is rotatably installed below a torque tube and is provided with a first locking area and a second locking area; the retainer is matched with the locking part for use, the retainer is provided with a first locking area and a second locking area, and the torque tube has a passing state or a locking state when passing through the first locking area and the second locking area; in the locking state, the first locking area is attached to the first locking area or the second locking area is attached to the second locking area, so that the torque tube is prevented from continuously rotating; in a passing state, the locking piece passes through the retainer in an inclined state; the torque tube switches the passing state or the locking state through reverse rotation, the response time of the tracking support rotating to the protection angle is effectively shortened, and therefore the safety and the wind resistance of the whole tracking support are improved.

This invention discloses a rapid clamping device and method for titanium alloy hot forming dies. The device includes a pull rod, a pressure plate, a handle, an eccentric shaft, and pads. The upper end of the pull rod is a T-shaped end that hangs along a T-slot on a platform, and the lower end is provided with a support shaft. The pressure plate has a strip-shaped groove, a first arc-shaped groove on its lower surface that mates with the support shaft, and a second arc-shaped groove at the rear end of its upper surface that mates with a clamping boss at the front end. The cylindrical surface of the middle section of the eccentric shaft mates with the second arc-shaped groove, and the cylindrical platforms at both ends mate with the third arc-shaped groove of the pads with an eccentricity. The pads are placed perpendicularly and intersectingly between the pressure plate and the platform. The method includes: when installing the lower die, pushing the pull rod downwards, placing the pads below the pressure plate, and clamping the eccentric shaft via the handle; when installing the upper die, pushing the pull rod upwards, placing the pads above the pressure plate, and clamping the eccentric shaft via the handle. This invention achieves labor-saving and rapid clamping by using displacement generated by the rotation of the eccentric shaft instead of threaded translation, and is heat-resistant and has a long service life.

This invention discloses a book label pasting and laminating device, including a mounting frame, a label picking mechanism, a film picking mechanism, a label picking feedback mechanism, and a film picking feedback mechanism. The label picking mechanism provides the separated book label, and the film picking mechanism provides the separated film. The displacement of the label picking lifting beam is transmitted to the label picking feedback device via a label picking wire, allowing the feedback device to control and adjust the rotation angle of the release paper power shaft system. Similarly, the displacement of the film picking lifting beam is transmitted to the film picking feedback device via a film picking wire, allowing the feedback device to control and adjust the rotation angle of the release film power shaft system. This invention ensures that the length of the book label and film remains essentially constant during each labeling process. The laminated book label formed by the book label and film is then applied to the book, improving the consistency of the labeling effect for books in the same batch.

The utility model discloses a main spring bolt assembly of a lock body and the lock body, and the main spring bolt assembly comprises a main spring bolt body and a main spring bolt, the main spring bolt shifting block can rotate around a first rotating axis, and the main spring bolt shifting block is matched with the main spring bolt body; the rotating shifting piece is fixed relative to the main spring bolt shifting block and is provided with a first pressed part and a first matching part arranged adjacent to the first rotating axis; the lock cylinder is provided with a lock head cam, and the lock head cam is provided with an initial position and an unlocking position; the lock head shifting piece is provided with a second pressed part and a second matching part, and the second pressed part is located on one side of the lock cylinder and is adjacent to the lock head cam; in the process that the lock head cam rotates to the unlocking position from the initial position, the lock head cam is in contact fit with the second pressed part to drive the lock head shifting piece to move, the second matching part is in contact fit with the first matching part to drive the rotating shifting piece and the main spring bolt shifting block to rotate synchronously, and the main spring bolt body is switched to the retracting state from the stretching state. The rotating angle is small when a key is used for unlocking.