63results about How to "No impact noise" patented technology

An adjustable damping valve arrangement comprises an actuator for controlling a main stage valve, wherein the main stage valve has a rigid main stage valve body which carries out an axial operating movement relative to a valve seat surface of the main stage valve. A pre-opening valve having at least one spring element which in turn preloads a pre-opening valve body precedes the main stage valve body. The main stage valve body is supported on the valve seat surface in the closed operating position by the pre-opening valve.

The invention discloses a leftward and rightward door opening mechanism and a refrigerator. The leftward and rightward door opening mechanism comprises a hinge module arranged on a refrigerator door body and a driving module arranged on a refrigerator box body, wherein the driving module comprises a driving bottom plate, two first gears oppositely arranged on the driving bottom plate, a driving rack driven through the first gears and second gears separately driven by the first gears, and the driving rack is guided and limited by the second gears; the hinge module comprises a hinge bottom plate and two hinges oppositely arranged on the hinge bottom plate, and the hinges drive the first gears; when the two hinges are both meshed with the first gears, the door body is locked; and when the hinge on one side is separated from the first gear but the hinge on the other side is still meshed with the first gear, the door body is open. As rotating shafts are arranged on the door body, the door can be opened from the left side as well as the right side without making any adjustment.

The invention discloses a left and right door opening mechanism and a refrigerator. The left and right door opening mechanism comprises a hinge module and a transmission module which are arranged on a refrigerator body and a refrigerator door body correspondingly. The hinge module comprises a hinge bottom plate and arc-shaped bosses located on the two sides of the hinge bottom plate, wherein the hinge bottom plate and the arc-shaped bosses are provided with open grooves toward the direction of the refrigerator door body. The transmission module comprises a transmission bottom plate and a plurality of shafts fixedly arranged on the transmission bottom plate. Each shaft comprises a first shaft body and a second shaft body, wherein the first shaft body is located in the corresponding open groove so as to achieve rotation of the door body, and the second shaft body is located outside the corresponding open groove so as to limit the corresponding arc-shaped boss. When the first shaft bodies and the second shaft bodies on one side of the transmission module leave the inner sides and the outer sides of the arc-shaped bosses, the first shaft bodies and the second shaft bodies on the other side of the transmission module are located on the inner sides and the outer sides of the arc-shaped bosses correspondingly, and the door body is opened. According to the left and right door opening mechanism and the refrigerator, the hinge module and the transmission module are provided with the arc-shaped bosses and the multiple shaft bodies correspondingly, and thus left side door opening and right side door opening can be achieved simultaneously under the circumstance without any adjustment.

The invention relates to a hardware door lock fitting, and discloses a magnetic silent lock body. The magnetic silent lock body is provided with a box bottom assembly, a driving assembly, a deadbolt assembly, a buckling box assembly and a handle stirrer, wherein the driving assembly consists of a slide block, a gear and a three-circle torsion spring; the deadbolt assembly consists of a deadbolt, a deadbolt pull rod and a reset spring; the top of the deadbolt is provided with a rack B; the box bottom assembly is provided with a gear positioning column; the slide block is provided with a rack A and a magnet positioning hole; the deadbolt is provided with a rack B; a magnet B is arranged in the buckling box assembly; the magnet A is fixedly embedded into the magnet positioning hole in the slide block; the slide block is arranged in the box bottom assembly; the gear passes through the gear positioning column, and is meshed with the rack A and the rack B simultaneously. During door closing, the deadbolt extends outwards under the same-pole repellant force of the magnet A and the magnet B. The movement of the lock body is driven by the gear and the racks, and the overall movement process is stable and reliable without collision, so that the use handfeel of the lock body is improved, and a silencing effect is achieved.

The invention relates to a spot film system of a X-ray machine, in particular to an electrically operated door device of the spot film system of the X-ray machine, which comprises rocker arms, a spotfilm door fixed thereon and a motor arranged on a support board; wherein the motor is arranged at one end of the support board and is connected with a first rocker arm of the end via a swing rod; theother end of the support board is provided with a door rotating shaft and an angle positioning device which synchronizes with the door rotating shaft, a second rocker arm of the end is arranged on thedoor rotating shaft; and torsion springs are arranged on the first and the second rocker arms. The rotation of the motor of the invention is controlled by two travel switch components, the operationis balanced and noiseless, and has no adverse effects on the spot film system; furthermore, the occupying space is small.

The invention discloses a hydraulic-driven high-pressure grouting pump. The pump is provided with an oil inlet P, an oil return port T, a slurry inlet V and a high-pressure slurry outlet H, and comprises a pressurization cylinder and a hydraulic control reversing valve assembly; the pressurization cylinder comprises a low-pressure cylinder, a low-pressure piston, a left high-pressure plunger, a right high-pressure plunger, a left high-pressure cylinder and a right high-pressure cylinder, wherein the low-pressure cylinder is provided with a first oil inlet flow channel, a second oil inlet flowchannel, a first control flow channel and a second control flow channel, and an annular communication groove is formed in the low-pressure piston; when the low-pressure piston moves leftwards to the position where the low-pressure piston covers a first through-flow groove completely, the communication groove is used for communicating the first oil inlet flow channel with the first control flow channel to control reversing of the hydraulic control reversing valve assembly, and the low-pressure piston is braked through a closed left piston cavity; and when the low-pressure piston moves rightwards to the position where the low-pressure piston covers the second through-flow groove completely, the communication groove is used for communicating the second oil inlet flow channel with the second control flow channel to control reversing of the hydraulic control reversing valve assembly, and the low-pressure piston is braked through a closed right piston cavity. The high-pressure grouting pumpis simple in structure, electric control is not needed, and the low noise is achieved.

The invention discloses a left and right door opening mechanism and a refrigerator. The left and right door opening mechanism includes a hinge module arranged on the refrigerator door body and a transmission module arranged on the refrigerator box. The two first gears arranged oppositely, the transmission rack driven by the first gear, and the second gear respectively driven by the first gear, the second gear guides and limits the transmission rack, and the hinge module includes The hinge bottom plate and the two hinges arranged opposite to each other on the hinge bottom plate, the hinge and the first gear are in transmission, when the two hinges are meshed with the first gear, the door body is locked, when one side of the hinge is disengaged from the first gear , the hinge on the other side keeps meshing with the first gear, and the door opens. The rotating shaft of the present invention is arranged on the door body, and the door can be opened on the left side and on the right side at the same time without any adjustment.