4results about How to "Good movement synchronization" patented technology

A landing gear door retraction device is disclosed, which can be used to open and close the landing gear door of a reusable aircraft. It is characterized by comprising: a door actuator and multiple sets of linkage mechanisms. The device uses an independent door actuator to drive multiple sets of four-bar linkages, making it suitable for aircraft with high flight speeds, limited cabin space, and multi-leaf landing gear doors. It offers significant advantages such as light weight, small size, simple timing, and good synchronization. When the landing gear door is fully open, all three sets of four-bar linkages are near their dead center positions, preventing damage to the door structure caused by actuator overtravel. The door retraction device is located near the side and top walls of the landing gear bay, requiring minimal space and fully utilizing the remaining cabin space after the landing gear is retracted.

The utility model relates to the technical field of glass processing, in particular to an anti-deviation side baffle structure of a liquid crystal glass conveying device, which comprises a conveyor, an anti-deviation mechanism is arranged on the conveyor and is used for preventing deviation of glass in the conveying process, and the anti-deviation mechanism comprises a main body assembly, a side baffle plate and a side baffle plate, sliding plates are slidably mounted on the front side and the rear side above the bottom frame, a fixing plate is fixed to the middle in the bottom frame, a rotating rod is rotatably mounted at the top of the fixing plate, connecting rods are pivoted to the two ends of the rotating rod, the other ends of the connecting rods are pivoted to the tops of the sliding plates, air cylinders are mounted at the two ends in the bottom frame, and the output ends of the air cylinders are connected with the sliding plates. The execution assembly is arranged on the sliding plate and used for limiting and guiding the glass; symmetrical limiting of the glass is achieved through a two-way synchronous adjusting mechanism, and conveying deviation is prevented; the rolling contact design has guiding and anti-scraping functions, the static elimination technology is combined to ensure that the glass is clean, and the device is suitable for high-speed precise transportation.

This invention discloses a mechanical muscle device for an automotive collision dummy, relating to the field of automotive safety testing technology. It includes an end cap, a ball screw with both positive and negative threads, a screw nut, a shell flap, an active connecting rod, a pin, and a buffer structure unit. The buffer structure unit is mounted on the shell flap, and its lattice energy-absorbing core layer adopts one of the following: a beetle-inspired curved rib lattice structure, a chiral nested hexagonal structure, or a hexagonal FBCC structure. Through the mechanical coordinated drive of the ball screw with both positive and negative threads and the X-type scissor unit, the rotational motion of the servo motor is precisely converted into the radial expansion and axial contraction of the shell flap, accurately simulating the active tension and passive stretching of muscles during a collision. Compared to pneumatic or hydraulic solutions, this all-mechanical structure has the advantages of rapid response, high control precision, and no leakage risk, avoiding the instability of fluid components under high-speed impact, and significantly improving the bio-simulation of the dummy and the reliability of test data.

The utility model relates to the technical field of clamping tools, in particular to a fork-shaped part clamping device which comprises a connecting arm, a mounting plate and a mounting seat, the connecting arm is fixedly connected with the mounting seat through the mounting plate, two opposite supporting blocks are arranged on the mounting seat in a sliding structure mode, and two opposite clamping blocks are arranged on the mounting seat in a sliding structure mode. The opening part of the fork-shaped part is oppositely supported by arranging the supporting block, then the rear part of the fork-shaped part is clamped by utilizing the clamping block, and the clamping stability is ensured in a mode of tightly supporting the front part and clamping the rear part; the mounting base is provided with a first transmission structure used for driving the supporting block to reciprocate in the vertical direction and a second transmission structure used for driving the clamping block to reciprocate in the vertical direction, and the second transmission structure is connected with the mounting base. And one power piece is used for driving the supporting block and the clamping block to move through the first transmission structure and the second transmission structure correspondingly, good action synchronism is achieved, and meanwhile cost is saved.