8 results about "Damper" patented technology

A heat-exchange-type ventilating device (100), provided with a partition wall (21) having a bypass opening (21a) for communicating an exhaust air duct on the upstream side of a total heat exchanger (6) with an exhaust air duct between the total heat exchanger (6) and a humidifier (8), the partition wall (21) partitioning the exhaust air duct on the upstream side of the total heat exchanger (6) anda supply air duct on the downstream side of the total heat exchanger (6) from each other; a bypass damper (18) for opening/closing the bypass opening (21a); and a control unit (23) for performing a control of opening the bypass opening (21a) by means of the bypass damper (18) at a first time, and closing the bypass opening (21a) by means of the bypass damper (18) at a second time.

The invention discloses a multi-damping buffer energy dissipation type bridge anti-seismic check block structure. The bridge anti-seismic check block structure comprises a steel corbel, a check blockstructure, steel baffles and damper structures, and the steel corbel is fixed to the upper portion of the side wall of a pier through steel corbel bolts; the check block structure is arranged betweenthe steel corbel and a main beam; the four steel baffles are connected with the four side walls of the check block structure through damper structures correspondingly; and the two ends of each damperstructure are connected with the check block structure and the steel baffles through damper side plate bolts respectively. Through the combined action of the multiple damper structures and a middle collision ball, earthquake energy is buffered and consumed; displacement between a beam body and the bridge piers is limited in the transverse bridge direction, the longitudinal bridge direction and thevertical direction, so beam falling is effectively prevented; and rigid collision between a bridge and the check block is converted into flexible collision inside the bridge anti-seismic check blockstructure, and collision between main bodies is transferred to the check block, so damage of earthquakes to the bridge is reduced, and damage to the check block is also reduced.

The invention discloses a main-tower-torsion-preventing power transmission tower with a metal damper capable of dissipating energy and hydraulically resetting. The tower comprises a main tower, a lowhanging point rotating arm, a hydraulic metal damper torsion support and a high hanging point support, wherein the low hanging point rotating arm, the hydraulic metal damper torsion support and the high hanging point support are all arranged at the top end of the main tower, and a main tower rotating shaft is installed at the top end of the main tower and sleeved with a low-hanging-point rotatingarm sleeve. According to the main tower torsion preventing power transmission tower with the metal damper capable of dissipating energy and hydraulically resetting, through the dual buffering effect,torsion and vibration borne by the power transmission tower can be effectively reduced, the very good effect of protecting the power transmission tower is achieved, in addition, during maintenance orinstallation, the rotating angle of the low-hanging-point rotating arm can be adjusted, and therefore after an accident happens, the convenience of installation and maintenance is achieved.

The invention discloses wire drawing equipment for Internet of Things engineering, which comprises a rotary damper, a concave support frame is arranged at the top of the rotary damper, a protection box A is arranged at the top of one side of the concave support frame, a motor A is arranged in the protection box A through a screw, and a wire drawing roller is connected to the top of the inner side of the concave support frame through a rotary shaft. Limiting discs are arranged at the two ends of the wire drawing roller in a penetrating mode, a protection box B is arranged on one side of the surface of the concave supporting frame and provided with a motor B through screws, a sliding rail is arranged at the bottom of one side of the protection box B through a support, a reciprocating lead screw is arranged at the position, located on the top of the sliding rail, of one side of the protection box B, and the surface of the reciprocating lead screw is sleeved with a sliding sleeve. And a limiting block is arranged at the top of the sliding sleeve. The wire drawing device is provided with a uniform wire drawing structure, so that wire bodies can be tidied while wire drawing is carried out, and the wire drawing device is suitable for being widely popularized and used.

The invention discloses a mold with a mechanism capable of controlling the mold opening and closing sequence. The mold comprises a fixed mold part and a movable mold part, the fixed mold part comprises a fixed mold fixing plate (1), a fixed mold plate (2) is arranged below the fixed mold fixing plate (1), the movable mold part comprises a movable mold plate (3), a movable mold insert (4) and a sliding block (5) are arranged on the movable mold plate (3). A discharging plate (6) is further arranged above the mold core (4) and the sliding block (5), a mold core (7) is arranged below the fixed mold fixing plate (1), and the mold core (7) can enter a mold cavity located in the movable mold insert (4) during mold closing. The mold with the mechanism capable of controlling the mold opening and closing sequence is characterized in that a damper (8) is arranged on the bottom end face of the fixed mold fixing plate (1), a connecting hole (9) matched with the damper (8) is formed in the top end face of the fixed mold plate (3), and a mold opening and closing sequence control mechanism is arranged between the fixed mold part and the movable mold part.

The invention provides a manufacturing process of a double-door armrest box capable of being opened synchronously, which comprises the following steps: an upper cover and a lower cover of a box cover are subjected to injection molding, and the weight of the upper cover is 200-250g; the weight of the lower cover is 110 to 155g; foaming an upper cover coating material of the box cover; the upper cover is coated with a foaming material to form an upper cover assembly, and the total weight of the upper cover assembly is 300-350 g; the lower cover and the upper cover assembly of the box cover are welded to form the box cover on the left side and the right side, and the box cover is provided with an installation space; the damper assembly is assembled in the mounting space of the box cover; the damper assembly comprises a damper, a torsional spring, a rotating shaft and a shaft sleeve; the specification of the damper is 5-20N. Mm; the box covers, provided with the damper assemblies, on the left side and the right side are assembled to a box body of the armrest box; a button assembly for controlling the opening of the left box cover and the right box cover is assembled on the box body of the armrest box; and armrest box opening time parameter detection. The double-door armrest box capable of being opened synchronously can be produced and manufactured through the process steps.

The invention discloses a high-speed quay crane trolley traction wheel anti-vibration system which is used for weakening the vibration of traction wheels caused by the pulling of a walking steel wire rope when a quay crane trolley walks along a quay crane girder and comprises two groups of anti-vibration devices which are respectively arranged between a frame of the quay crane trolley and the traction wheels on the two sides. Each anti-vibration device comprises a connecting base and an oil-gas damper, the connecting bases are fixedly arranged on the frame of the quay crane trolley, the oil-gas dampers are located between the frame of the quay crane trolley and the traction wheels and are parallel to the quay crane girder, one ends of the oil-gas dampers are hinged to the connecting bases, and the other ends of the oil-gas dampers are fixedly connected with supports of the traction wheels. The vibration amplitude of the quay crane trolley in the quay crane girder direction is reduced, the operation stability of the quay crane trolley is improved, the quay crane trolley and a quay crane structure are protected, normal operation of the quay crane trolley is guaranteed, the operation speed of the quay crane trolley can be increased, and the loading and unloading efficiency of a quay crane is improved.