4results about How to "Reduce connection stress" patented technology

The present invention provides an insulated, load-bearing, integrated, all-composite liquid hydrogen tank, comprising an anti-leakage shell, an anti-mechanical shell and a coordination ring; the anti-leakage shell forms a space for accommodating cryogenic propellants, and comprises a front connector, a sealing shell and a rear connector from front to back, the front connector and the rear connector are interconnected with a detachable core to form a core mold, and a sealing shell is prepared by prepreg plying on the outer surface of the core mold; the anti-mechanical shell comprises an inner coordination layer, a high-rigidity layer and an outer protective layer fixedly connected in sequence outside the sealing shell; the coordination ring is located at the front and rear ends of the liquid hydrogen tank, seals the two ends of the anti-leakage shell and is connected to the anti-mechanical shell, so that a vacuum state is maintained between the sealing shell and the outer protective layer. The insulated, load-bearing, integrated composite liquid hydrogen tank of the present invention has a simple structure, and has the characteristics of good thermal insulation, high rigidity and low weight through structural and material design, and can be applied to high-efficiency low-temperature upper stage transportation, and can also be applied to low-temperature spacecraft for deep space exploration.

The utility model relates to thread protection device technical field, and disclose a kind of outer turning covering type female thread protector, including outer turning covering protective sleeve and threaded pipe, the outer turning covering protective sleeve is installed to the outside of threaded pipe, the outer turning covering protective sleeve includes mounting block, inner clamping block, outer fixed block, thread segment and rotating block, the inner clamping block is fixedly connected to the inside of mounting block, the outer fixed block is fixedly connected to the outside of mounting block, the thread segment is fixedly connected to the top of mounting block, the rotating block is threadedly rotatably connected to the outside of thread segment.The outer turning covering type female thread protector, by inner clamping block, outer turning covering protective sleeve is clamped in the outside of threaded pipe, then let rotating block rotate outside thread segment, outer turning covering protective sleeve and threaded pipe are fixed, using outer fixed block can realize reinforcing effect, reduce the connecting pressure of threaded pipe, guarantee the service life of threaded pipe.

The invention belongs to the technical field of computers, and provides a tab display method and device, equipment and a storage medium. According to the embodiment of the invention, a tab display request for a target service sent by a user terminal is intercepted, and context information related to the target service in the user terminal is acquired from the tab display request; performing tab matching based on the context information and the tab rule set to obtain a matched tab list; performing tab assembly based on tab element information of each matched tab in the matched tab list to obtain tab assembly information; the tab assembly information is sent to the user terminal, and the user terminal performs on-demand rendering based on the tab assembly information and displays a corresponding matched tab. According to the embodiment of the invention, the function development cost for tab display and the tab operation and maintenance complexity can be reduced.

The present invention discloses a semiconductor device driving circuit and a test method thereof, comprising a comparator A1, a first resistor R1, a second resistor R2 and a light emitting diode group. In the present invention, when a light emitting diode is short-circuited or damaged, the elastic force of the torsion spring rebounds, the torsion spring drives the entire placement frame to rotate clockwise by using the clamp head, and the spring elastic force pulls back, so that the two extrusion plates gradually move away from each other, at which time the connecting pipe returns to its original state, the connection pressure between the connecting pipe and the light emitting diode is reduced, the placement frame rotates clockwise inside the screw groove by using the screw strip, and the elastic force of the torsion spring causes the placement frame to move up during the rotation process, until the screw strip is separated from the screw groove, the elastic force of the torsion spring bounces the entire placement frame from the inside of the through groove, so that the damaged light emitting diode can be directly taken out from the test device, the continuity of the test of multiple light emitting diodes is ensured, and the accuracy of the test of the remaining light emitting diodes is improved at the same time.