50results about How to "Fast opening and closing speed" patented technology

A novel telescopic translation door comprises a first guide rail, a driving door, a motor, a first swing mechanism and a first driven door; the first guide rail is arranged on a fixed base; the driving door is movably arranged on the first guide rail, and provided with a tooth bar; the motor is arranged on the fixed base, and an output shaft of the motor is fixedly provided with a gear wheel; two first tension wheels of the first swing mechanism are respectively pivoted on two ends of a same side of the driving door; a first flexible connector is synchronically sleeved on the two first tension wheels; two ends of a first support are respectively fixed on a first lower segment and the ground; one end of a second support is fixed on a first upper segment; the first driven door is fixed on one end, far away from the first upper segment, of the second support. The novel telescopic translation door can greatly improve a translation door open/close speed, is simple in structure, hard to fail, no cable is needed to be paved between a door body of the driven door and the adjacent driven door, so no cable can be mixed and twisted in a telescopic process, and the cable cannot be damaged.

The invention discloses an electromagnetic operating mechanism of a circuit breaker. The electromagnetic operating mechanism comprises a static contact, a moving contact matched with the static contact, and an electromagnetic mechanism capable of operating the moving contact, wherein the electromagnetic mechanism is hinged with a swing arm through a transition connecting piece; the tail end of theswing arm is hinged to the moving contact so as to drive the moving contact to be opened and closed, a clamping hook used for being matched with the transition connecting piece is arranged on the front side of the electromagnetic mechanism, and the clamping hook can be driven by the elastic driving piece so as to be matched with the transition connecting piece to achieve closing locking or opening separation. With the adoption of the structure, the whole operating mechanism not only maintains the characteristics of no power consumption and no voltage short-circuit protection of the original spring mechanism in the closing state, but also has high reliability of the electromagnetic mechanism, overcomes all defects of the two mechanisms, has the best characteristics of the two mechanisms, can prolong the electrical life and the mechanical life by multiple times, and completely meets the technical standard requirements of the state grid for the high-reliability switch.

The invention provides an operating device for a rapid mechanism switch. The device comprises a shell, a transmission rod, an electromagnetic driving mechanism and a permanent-magnet driving mechanism, wherein the electromagnetic driving mechanism and the permanent-magnet driving mechanism are arranged in the shell, the transmission rod penetrates through the shell in a sliding way, a movable contact is arranged at an upper end of the transmission rod, the permanent-magnet driving mechanism is connected with the transmission rod and is used for driving the transmission rod to upwards move so that the movable contact is in contact with a static contact, and the electromagnetic driving mechanism is connected with the transmission rod and is used for driving the transmission rod to downwards move so that the movable contact is separated from the static contact. In the device, the electromagnetic driving mechanism and the permanent-magnet driving device are arranged, thus, the breaking-closing speed can be greatly increased, and the breaking-closing time is shortened; and moreover, the device is simple in structure and is easy to operate.

A micro-electromechanical device has a substrate (10), a movable element, movable towards the substrate by electrostatic forces on electrodes, facing surfaces of the movable element and the substrate being shaped such that one or more venting channels (VC) are defined by the facing surfaces when they are in a closed position, configured to enable fluid between the facing surfaces to flow across the facing surfaces, to enter or exit the area between the facing surfaces. Such channels can enable fluid damping of the movement of the moveable element to be controlled. Increasing the flow entering or exiting the area between the facing surfaces, can reduce such damping, and hence increase speed of opening and closing of the device. The channels can connect to holes in the electrodes.

The invention discloses a long-stroke permanent magnet operating mechanism with a magnetic bridge and an auxiliary weak magnetic coil for a high-voltage vacuum circuit breaker. The mechanism comprises a guide rod connected with a circuit breaker moving contact, a permanent magnet holding mechanism, an electromagnetic driving mechanism, and a non-magnetic material gasket. The permanent magnet holding mechanism comprises an upper magnetic bridge, a switching-on static iron core, a switching-on moving iron core, a switching-on permanent magnet, an upper auxiliary weak magnetic coil, a switching-off static iron core, a switching-off permanent magnet, a lower auxiliary weak magnetic coil, a lower magnetic bridge, and a holding moving iron core. The electromagnetic driving mechanism comprises a switching-on coil, a switching-off coil, a driving static iron core, and a driving moving iron core. The mechanism can reduce the absorption force of the permanent magnet for the holding moving iron core at the switching-off and switching-off starting stages and the absorption force of the permanent magnet for the holding moving iron core at the switching-off and switching-off ending stages, and achieves the starting acceleration and ending deceleration of the moving iron core. Meanwhile, the mechanism is enabled to counteract a part of holding forces of the switching-off permanent magnet and the switching-on permanent magnet at the switching-off and switching-off starting stages through the auxiliary coils, and shortens the switching-off and switching-off starting time.

A mechanical prosthetic heart valve having a ring, multiple hinges, and multiple leaflets. The hinges are attached to the ring and are evenly spaced from one another along the inner circumference of the ring. Each leaflet is rotably attached to a hinge by an opening located in the center of the lower portion of the leaflets. The ring can include multiple protrusions located along the inner circumference of the ring. The protrusions of the ring limit the opening angle of the leaflets. By limiting the opening angle of the leaflets, wear and tear of the hinges and leaflets, as well as the probability of malfunction of the mechanical prosthetic heart valve are reduced. In addition, limiting the opening angle of the leaflets may increase the opening and closing speed of the leaflets, thus improving performance of the mechanical prosthetic heart valve when the patient is experiencing an elevated cardiac frequency.

The invention discloses a low-voltage capacitor intelligent synchronous zero passage switch which comprises a synchronous zero passage detection control unit and a low-voltage vacuum contactor. A single chip microcomputer is taken as a core, a sampling loop and reasonable program design are supplemented, the problem that in the process of low-voltage capacitor switching, high-voltage harmonic waves and inrush currents occur is solved, and safety and reliability of a capacitor switching switch are improved. The low-voltage capacitor intelligent synchronous zero passage switch is low in manufacturing cost, simple and durable in structure and little in power dissipation.

The invention relates to a high-voltage switch and a double-acting transmission system thereof. The high-voltage switch includes a double-acting transmission system. The double-acting transmission system includes a first pull rod and a second pull rod. The second pull rod is a power input rod in transmission connection with an operating mechanism. The opposite ends of the first pull rod and the second pull rod are respectively connected with a first contact and a second contact. The first pull rod and the second pull rod are in transmission connection through a transmission structure. The transmission structure includes a fixed frame, a crank arm of which the middle is hinged to the fixed frame, a first connecting rod of which the two ends are respectively hinged to the inner end of the crank arm and the first pull rod, and a second connecting rod of which the two ends are respectively hinged to the outer end of the crank arm and the second pull rod. When the second pull rod of the double-acting transmission system moves in a direction under a push/pull force, the second pull rod is driven by the transmission structure to move in an opposite direction. The first pull rod and the second pull rod respectively drive the contacts connected therewith to move in opposite directions for opening or closing. Through simultaneous movement of the two contacts, the opening/closing speed ofthe high-voltage switch is greatly increased.

The invention discloses a large-capacity circuit breaker. The large-capacity circuit breaker comprises a plurality of movable contact units, a contact supporting mechanism and an operation connecting rod, wherein each movable contact unit comprises a conductive plate, a flexible connector, movable contacts and an arc main contact which are sequentially connected to one another; the contact supporting mechanism comprises a long magnet yoke plate; three connecting racks sleeve the long magnet yoke plate, namely, the three connecting racks are respectively arranged on a left phase rod, a middle phase rod and a right phase rod of the long magnet yoke plate correspondingly in a penetrating manner; an insulating rack is inserted in each connecting rack; the fronts of bottom plates of the insulating racks are tightly pressed on the long magnet yoke plate; the flexible connector of each movable contact unit is correspondingly clamped in the corresponding insulating rack; and the movable contacts of each movable contact unit are strung together through a corresponding short magnet yoke rod. The large-capacity circuit breaker is simple and reliable in structure and high in work efficiency.

The invention relates to the field of low-voltage electric appliances, in particular to an energy storage operating mechanism of a load circuit breaker, which comprises a mechanism bracket, a handle assembly, an energy storage spring, a transmission connecting rod, a linkage rod and a first driving shaft, one end of the handle assembly is operated by a user and connected with one end of the energystorage spring, and the other end is arranged on the mechanism support in a pivoted mode. One end of the transmission connecting rod is pivotally arranged on the mechanism support, the other end of the transmission connecting rod is connected with the other end of the energy storage spring and one end of the linkage rod through a first driving shaft, and the other end of the linkage rod is in driving connection with a moving contact mechanism of the load circuit breaker. After the handle assembly is shifted to enable the energy storage spring to store energy, the energy storage spring releases energy to drive the transmission connecting rod to rotate through the first driving shaft, and drives the linkage rod to drive the moving contact mechanism to reciprocate at the same time; and according to the energy storage operating mechanism, the switching-on and switching-off speed of the load circuit breaker switch is increased. The invention further provides a load circuit breaker comprising the energy storage operating mechanism. The load circuit breaker is high in switching-on and switching-off speed.

The invention relates to a rotation movable bridge based on a lifting tower rack. The movable bridge comprises a base, a fixed bridge body is connected with the base through support pillars, a movable bridge body is arranged on one end of the fixed bridge body; the bottom surface of the movable bridge is connected with a hinge seat and a movable bridge lifter, the flexible end of the movable bridge lifter is connected with the bottom surface of the movable bridge body; the other end of the fixed bridge body is provided with a movable tower rack, the top of the movable tower rack is provided with tower rack pulleys, a motor is further arranged on the end of the movable tower rack farther from the movable bridge body; the movable tower rack can make rotations around a pivot of the rack bottom; the movable bridge body is connected with several traction steel cables, the other ends of the steel cables are connected with the motor, and the steel cables are in slide fit with the tower rack pulleys. The rotation movable bridge based on the lifting tower rack is clear in force structure and beautiful in structure, when the movable bridge is lifted by the movable bridge lifter, the concrete base is under compression, and the compression resistance of the concrete is well utilized. Hydraulic hoist is adopted by the movable bridge for control, the operation is reliable. And the speed of opening and closing is high, the rhythm is smooth, the smoothness of airway traffic is guaranteed.

An intelligent magnetic control low-voltage switch device comprises a magnetic control type primary module and a blade type secondary module. The magnetic control type primary module comprises a first bottom shell, a first top shell, a plastic shell baffle plate and a bottom flitch plate, and the first bottom shell, the first top shell, the plastic shell baffle plate and the bottom flitch plate form a whole shell frame; automatic opening and closing can be achieved under the size requirement of an original manual molded case circuit breaker, an existing old switch in a transformer area is directly replaced, the opening and closing speed is greatly increased, the mechanical performance is improved, the space capacity of a secondary control module is effectively increased, high intelligence, primary and secondary overall modular design and secondary module heat insulation design are achieved, and the cost is reduced. The secondary control module can be plugged, the secondary module can be replaced without power cut, the operation and maintenance capability of the product is improved, the service life of the primary module and the secondary module is the same, the service life of the device is greatly prolonged, secondary vulnerable components can be plugged independently, the flexibility of the device is improved, and high scientificity and logicality are achieved.