40results about How to "No stiffness" patented technology

The invention discloses a rotary compressor and a refrigeration device. The rotary compressor includes: a cylinder, the cylinder has a cylinder chamber and a sliding vane groove; an exhaust hole, the exhaust hole communicates with the cylinder chamber; a piston; a crankshaft, the crankshaft is used to drive the The piston rotates eccentrically in the cylinder chamber; the upper bearing and the lower bearing; the sliding plate is arranged in the sliding plate groove and can reciprocate between the inner limit position and the outer limit position; the exhaust valve plate, The exhaust valve plate is used to open and close the exhaust hole; the transmission component drives the transmission component to push the exhaust valve plate to close the exhaust hole when the sliding plate moves outward, wherein the transmission component has a function for The contact surface that is in contact with the exhaust valve plate, the contact surface is a plane. According to the compression mechanism of the present invention, the applicability and reliability of the exhaust valve plate are good, the closing noise is low and the energy efficiency is high.

The invention discloses an electric eddy current crank arm buffer, which includes a rocker arm, and a connecting rod is hinged on the rocker arm. A fixed fixed part, the support plate can rotate with the rocker arm about the shaft or axis, a magnet and a conductor, one of the magnet and the conductor is installed on the support plate, and the other of the magnet and the conductor is installed on the On the rocker arm, and the position of the magnet and the conductor is opposite, the rotation of the support plate and the rocker arm about the shaft or the axis can drive the magnet and the conductor to cut the magnetic force line to generate a damping force. The buffer of the invention has a simple and durable structure, obvious buffering effect, no working fluid, no liquid leakage problem, and no power supply for working in a magnetic field. Especially when applied to an electric shovel, it can reduce the maintenance cost of the electric shovel, reduce the failure time of the electric shovel, and create greater economic benefits for mine production.

The invention particularly relates to a multi-section universal fabricated reinforcing device for a steel structure. The multi-section universal fabricated reinforcing device comprises a pair of symmetrical fixtures. The fixtures are composed of top plates, side plates, end plates, clamping plates, reinforcing plates, nuts and bolts; the side plates are perpendicularly welded to the two sides of the top plates; the end plates are perpendicularly welded to the ends of the top plates, and the end plates and the side plates are perpendicularly welded into a groove-shaped member; the multiple paired adjacent clamping plates are distributed on and welded to the inner side of the groove-shaped member at equal distances in the longitudinal direction; a clamping groove is formed between every two paired adjacent clamping plates; and the reinforcing plates are inserted into the clamping grooves. The multi-section universal fabricated reinforcing device is used for reinforcing a rod of the steel structure, the principle is simple, the force bearing state of an original structural system is not changed, and the construction scheme is greatly simplified; the reinforcing device does not has the rigid weak axis so that the outer plane rigidity of the reinforced member can be strengthened in multiple directions, and the reinforcing effect is good; the modular assembling connection mode is adopted so that the multi-section universal fabricated reinforcing device can be flexibly used in construction, and the construction process is greatly simplified; and the structure is simple, mounting and demounting are convenient and fast, construction is easy, repeated turnover using can be achieved, the construction cost is effectively reduced, and the construction efficiency is greatly promoted.