摘要:
A television signal digitizing method reduces the quantity of information without deterioration of image quality when digitizing progressive-scanned signals. The method uses a step of dividing a progressive-scanned information into two complementary interlaces, that is, an interlace 1 and an interlace 2; a step of converting luminance information in the interlace 1 to digital information whose sampling frequency is X; a step of converting chrominance information in the interlace 1 to digital information whose sampling frequency is Y; and a step of generating supplementary information.
摘要:
An air dryer device for a compressed air system of a vehicle includes a housing and a dryer mounted within the housing and containing a desiccant for drying compressed air from a compressor of the compressed air system. A drain valve is mounted within the housing and includes a valve body having a valve port and a valve seat. A hollow elongated control piston is mounted within the valve body for movement along an axis thereof. A valve element is mounted on the control piston and is normally urged into sealing engagement with the valve seat to close the valve port. The control piston is responsive to a pneumatic signal from an air governor of the compressed air system for being moved along its axis to bring the valve element out of sealing engagement with the valve seat to open the drain valve. An elongated heater member is mounted at one end on the valve body for generating heat. The heater member is received in an axial bore of the control piston. The other end of the heater member is disposed close to the valve element to transmit the heat of the heater member to the valve element and the valve seat.
摘要:
A braking apparatus is provided for an elevator which includes a cage, a counterweight, a main sheave, a motor for rotating the main sheave, a deflector sheave, and a rope wound around the main sheave and the deflector sheave, the rope extending from the cage to the counterweight. The braking apparatus comprises a first brake for the main sheave, and a second brake for the deflector sheave. Both brakes are controlled to apply an appropriate braking force to the cage in accordance with the load and the speed of the cage.
摘要:
An elevator apparatus includes an electric motor for driving the elevator apparatus, an elevator cage adapted to be lifted or lowered by the electric motor, a brake device for holding and retaining an elevator driving system, including the electric motor, and a malfunction detecting device responsive to the application of a torque to a retainer section of the brake device during the lifting or lowering of the elevator cage.
摘要:
A floor panel joint structure and a method of constructing a wooden building with the same are provided. The method comprises mounting floor panels on the foundation, and, joining a group of structural units to the foundation to produce a first floor structure. This is followed by mounting on the structural units at the first floor another group of structural units having a second floor structure made of floor panels joined to each other by panel joiners. The second floor structure are joined to top beams of the structural units at the first floor by through bolts which extend vertically across the floor panel, panel joiner, and beam. A roof structure is fabricated by joining roof panels to purlins. The purlin has a rib provided on a lower side thereof for connecting to the beams by a length of plywood boards. Accordingly, the installation of the floor and roof structures is simplified and its physical strength will be increased.
摘要:
In an elevator, for controlling the upward and downward movement of a cage, a shoe is brought into and out of pressing contact with a drum or a disk of a brake by a combination of a spring and a hydraulic cylinder. The optimum braking force is determined in accordance with the inertial mass and the speed of the cage to be braked, and the fluid pressure is controlled to control the force of pressing of the shoe against the drum or the disk, so that the brake can always produce the optimum braking force. A controller for controlling the pressure of the hydraulic cylinder is operated by an emergency power source. The brake can be controlled with a high responsibility and its braking force can be controlled arbitrarily, and even in the event of a power failure, the brake can be operated by the emergency power source of a small-capacity. Therefore, in the normal condition, the cage can be held accurately in its stop position, and in the event of an emergency, the optimum braking force is produced in accordance with the load and the speed of the cage, and the shortest braking distance can be achieved with a small braking impact.
摘要:
An elevator apparatus is provided with a hoisting unit including a drive sheave for winding a rope around it. The hoisting unit includes a rotary member. The rope has a car attached at one end thereof for suspending. A braking force is applied to the rotary member by a biasing unit. The braking force against the rotary member is released by a releasing unit, and is reduced by a reducing unit. In emergency stop of such an elevator apparatus, slipping of the rope is not caused to control the braking force with ease.
摘要:
A structural member, a floor structure, and a roof structure for a wooden building, and a method of building with the same are provided. The method comprises mounting floor panels on a foundation, mounting on sills wall panels provided with L shaped pillars of a plywood laminated material to produce a wall structure of the first floor, mounting and joining second-floor panels by panel support assemblies to the first-floor wall structure, and joining the second-floor panels with their beams connecting to each other to produce a floor structure of the second floor. This is followed by assembling a wall structure of the second floor, joining roof panels to each other by retainer assemblies on a ridge beam, and joining the roof panels with arms connecting to each other to produce a roof structure. Accordingly, the steps of making the floor, wall, and roof structures are minimized in number.
摘要:
An elevator apparatus having an easily mountable position detector and capable of detecting the position of a car with good precision. The apparatus has a position detector and a governor driven by a cable connected to an emergency stop device mounted on a car and capable of actuating the emergency stop device when the speed of the car has exceeded a prescribed speed, the position detector being driven by the governor, the apparatus includes a power transmission mechanism for causing rotation of the position detector at a speed higher than the speed of rotation of the governor.
摘要:
An electromagnetic disc brake for an elevator lifting apparatus comprises a disc spline-coupled with a rotational shaft. Braking body and an armature disposed to clamp the disc; braking springs press the armature against the disc, and an iron core is provided which includes inner and outer magnetic poles each facing the armature and concentrically formed with respect to the rotational shaft. An electromagnetic coil generates magnetic flux to pass through the inner and outer magnetic poles as magnetic paths. In addition, at least one of the pole face of the outer magnetic pole and the facing portion of the armature where it faces the pole face is provided with an arrangement for increasing a magnetic gap, and the braking springs are disposed in portions of the outer magnetic pole. Further, the braking body is supported through a sound absorbing member or one side of the armature facing the disc is formed of a sound absorbing member.