4results about How to "Reduce collision energy" patented technology

This application relates to the field of automotive structural technology, disclosing a door sill reinforcement beam, a door sill beam assembly, and an automobile. The door sill reinforcement beam provided by this application includes a main body, within which multiple cavities are formed in a transversely connected manner. These cavities include a first cavity, at least one second cavity, and at least one third cavity. The second and third cavities are located on opposite sides of the first cavity in the transverse direction. At least a portion of the cavities are provided with reinforcing structures, such that the stiffness of the first cavity is greater than the stiffness of the second cavity, and the stiffness of the first cavity is greater than the stiffness of the third cavity. This allows the door sill reinforcement beam to collapse and absorb energy while also possessing sufficient structural support stiffness.

This utility model provides a collision protection device and a vehicle. The collision protection device includes: a front subframe, comprising a first crossbeam and a second crossbeam spaced apart along its length and extending along its width, the first crossbeam being located at the bottom of the front subframe and below the bottom surface of the power battery; a triggering component fixed to the bottom front side of the battery housing; a bottom guard plate, one end rotatably connected to the bottom of the first crossbeam, and the other end fixedly connected to the triggering component, closely attached to and fixed to the bottom front side of the battery housing; and a curtain airbag folded and fixed inside the second crossbeam. When the first crossbeam is impacted, the triggering component is activated, and the other end of the bottom guard plate moves away from the bottom of the power battery and is fixedly connected to the triggering component; the curtain airbag is detonated, extending out from the second crossbeam, unfolding towards the bottom guard plate and the power battery, and covering the bottom front side of the power battery. This reduces the intrusion of obstacles into the power battery and the collision energy generated by obstacles on the power battery during secondary impacts.

The present application relates to a kind of powder processing device and method for improving powder sphericity and surface finish, including processing cylinder and multiple rotating mechanism, lower rotating mechanism includes stirring blade, can be rotated in positive direction, upper rotating mechanism includes shaping blade, can be rotated in positive direction or reverse direction.The stirring blade of lower rotating mechanism is a certain obtuse angle with the direction of rotation, can better lift up powder, the shaping blade of upper rotating mechanism includes two inclined planes of positive and negative direction.The rotating direction of upper and lower rotating mechanism is opposite first, the inclined plane of shaping blade towards the direction of rotation is opposite with the direction of movement of the powder lifted up, angle is close to vertical, impact and break up agglomerated powder and satellite ball, then the rotating direction of upper and lower rotating mechanism is same, the inclined plane of shaping blade towards the direction of rotation is close to the direction of movement of the powder lifted up, mainly with friction effect, improve powder surface finish.The stirring blade of lower rotating mechanism makes the friction effect between powder particles in cylinder, can also quickly improve the surface finish of powder.

This utility model provides a buffer device for elevator car overshooting, relating to the field of elevator safety technology. The buffer device includes a base plate, an energy-absorbing plate, a safety airbag, and a hydraulic buffer. The base plate is fixed to the top of the shaft. The hydraulic buffer is fixedly connected to the bottom surface of the base plate. The energy-absorbing plate is positioned below the hydraulic buffer and is slidably connected to the base plate, allowing it to rise and fall relative to the base plate. The safety airbag is fixedly connected to the bottom surface of the energy-absorbing plate. When an elevator car overshoots, the car first collides with the safety airbag. If the impact force exceeds a preset threshold, the airbag inflates within a short time to absorb the collision energy. The energy-absorbing plate continues to absorb the remaining energy, and the hydraulic buffer further reduces the collision energy. This buffer device significantly reduces the collision energy during an elevator car overshoot, minimizing harm to passengers and cargo inside the elevator car and improving elevator safety.