6results about How to "Add self-locking function" patented technology

The invention provides a sediment discharge valve of an aircraft fuel system, which belongs to the field of aircraft fuel systems and is characterized in that an oil passing hole is formed in the middle of a shell, and a stop part mounting groove is formed in the lower part; the arch-bridge-shaped elastic steel sheet and the stop part form a stop assembly which is mounted in the stop part mounting groove; the piston rod is of a multi-section variable-diameter cylindrical structure and is arranged in the shell, the middle of the piston rod is in sealing fit, the piston rod is limited in the shell through an end cover, the upper portion of the piston rod is sleeved with a spring and always compressed, the lower portion of the piston rod is matched with a stop circular bead to achieve upward movement of the piston rod to the opening position to be locked, and fuel flows out of the fuel tank through a fuel hole. The self-locking oil drainage device can realize self-locking and unlocking at an opening position, can be mounted in a narrow space blocked by a multi-layer structure in an airplane, and can realize a self-locking oil drainage function under the condition that the self-locking oil drainage device is invisible to an operator.

The invention discloses a split type wedge-shaped contact planetary roller lead screw pair, and relates to the technical field of precision lead screws. Comprising a reverse type nut, a retainer is arranged in the reverse type nut, a plurality of split type rollers are evenly connected to the retainer in the circumferential direction, the reverse type nut is in threaded connection with the split type rollers, a split type lead screw is arranged in an area surrounded by the split type rollers, and the split type rollers are in threaded connection with the split type lead screw. The two ends of the split type lead screw are connected with a first split type gear ring and a second split type gear ring in a self-locking mode, the first split type gear ring and the second split type gear ring are fixedly connected with the retainers at the two ends of the split type pin roller respectively, the second split type gear ring is connected with a push rod, and the push rod extends out of a reverse type nut. The end, penetrated by the push rod, of the reverse nut is fixedly connected with a supporting sleeve. The reverse planetary roller lead screw pair is high in integration level and ingenious in layout, the bearing performance, the transmission performance, the reliability and other service performance of the reverse planetary roller lead screw pair are improved, and the overall machining process, the price cost and the assembly difficulty of the lead screw pair are reduced.

The utility model provides a tractor with a self-locking function. The traction machine with the self-locking function comprises a device body, a motor fixing block is fixedly connected to the device body, a rotating motor is fixedly connected to the motor fixing block, a traction roller is arranged at the output end of the rotating motor, a rotating rod is fixedly connected to the traction roller, a rotating gear is fixedly connected to the rotating rod, and the rotating gear is fixedly connected to the traction roller. A locking block is fixedly connected to the device body, a locking fixing plate is fixedly connected to the locking block, an arc-shaped limiting groove is formed in the locking fixing plate, a self-locking limiting block is slidably connected to the arc-shaped limiting groove, a limiting transverse rod is fixedly connected to the self-locking limiting block, and a self-locking block is fixedly connected to the limiting transverse rod. A self-locking shaft is arranged on the self-locking block, and a self-locking spring is arranged on the limiting cross rod. The traction machine with the self-locking function has the effect of improving the use safety of the device.

The utility model discloses a butterfly valve with locking function relates to butterfly valve technical field, specifically is a butterfly valve with locking function, including the valve body, the upper surface of valve body is provided with the limit seat, and the inside rotation of limit seat is connected with the rotary axle rod, and the upper end of rotary axle rod is provided with the adjusting disc, and the upper surface of adjusting disc is provided with the force bar, and the inside of adjusting disc is provided with the adjusting storehouse, and the inside of adjusting storehouse is provided with the support slide rod, and the outer surface sliding connection of support slide rod has the connecting plate, and the outer surface of connecting plate is provided with the first spring. This butterfly valve with locking function cooperated setting of rotary axle rod, limit seat, adjusting disc, force bar, support slide rod, connecting plate, first spring, limit lever, control piece, control rope, second spring, guide roller and limit hole makes this butterfly valve with locking function have increased butterfly valve self -locking function, improves the practicality effect of butterfly valve.

The utility model discloses a kind of self-locking couplings, including first coupling part, second coupling part and locking assembly, the first coupling part with the second coupling part is connected through the coaxial transmission of cotter, the middle shaft part of first coupling part is equipped with hollow input shaft section, the coaxial sleeve of the outer periphery of hollow input shaft section is equipped with static sleeve, the end face of first coupling part away from second coupling part is equipped with locking groove;The locking assembly is housed in locking groove, including locking block and the pre-tightening spring group for providing the elastic force of radial inward to the locking block, the locking block is hinged connection with the groove bottom of locking groove by hinged connecting arm, the end face of locking block opposite to static sleeve is equipped with the friction plate covered in the outer periphery of static sleeve.The utility model takes the hinge point of hinged connecting arm as fulcrum, the radial inward component force of inclined pull spring drives locking block to hold static sleeve tightly, cooperate the increased friction design of friction plate, realize the quick, reliable, durable self-locking function of coupling under non-driving state.

This utility model relates to the field of ball screws, and more particularly to a segmented, modularly connectable ball screw, comprising a frame assembly, a first assembly connected to the frame assembly, and a second assembly connected to the first assembly. This utility model improves the reliable self-locking function of the ball screw after modular connection by utilizing the cooperation between a spring-loaded support block on the second screw and a groove on the first screw. Once connected, it effectively prevents relative movement between the first and second screws, ensuring the stability of the overall structure after modular assembly. A guide groove ensures the accuracy of the support block's movement. When disassembly of the ball screw is required, only appropriate external force needs to be applied to overcome the spring force, allowing the latch and support block to be pushed out of the second slot and the first groove, thereby unlocking the ball screw. The first spring makes the reset and locking processes spontaneous, greatly simplifying operation and improving overall efficiency and safety.