摘要:
A reactor vessel that performs work inside a nozzle stub of the reactor vessel, including a platform unit that is provided at an upper portion inside the reactor vessel and includes a substantially cylindrical side wall portion and a bottom portion blocking the lower end of the side wall portion; an access window that is provided at the side wall portion of the platform unit an access window moving device that opens and closes the access window; a working device; and a control device that is provided at the outside of the reactor vessel and controls the access window moving device and the working device, wherein the control device drives the access window moving device to open the access window, drives the working device to perform work inside the nozzle stub, and then drives the access window moving device to close the access window after the performance of the work.
摘要:
An opening and closing device that opens and closes an access port opened from a substantially cylindrical working platform disposed inside a reactor vessel and used to access a nozzle stub of the reactor vessel from the inside of the working platform, the opening and closing device includes: a cover that is slidable along an outer peripheral surface or an inner peripheral surface of the working platform from a closing position where the access port is closed to an opening position where the access port is opened; and moving device for sliding the cover.
摘要:
Disclosed is a nozzle stub working system for a reactor vessel that performs work inside a nozzle stub of the reactor vessel, the nozzle stub working system for the reactor vessel including: a platform unit that is provided at an upper portion inside the reactor vessel and includes a substantially cylindrical side wall portion and a bottom portion blocking the lower end of the side wall portion; an access window that is provided at the side wall portion of the platform unit to allow the inside of the platform unit to communicate with the nozzle stub; an access window moving device that opens and closes the access window; a working device that advances from the inside of the platform unit to the inside of the nozzle stub to perform work inside the nozzle stub; and a control device that is provided at the outside of the reactor vessel and controls the access window moving device and the working device, wherein the control device drives the access window moving device to open the access window, drives the working device to perform work inside the nozzle stub, and then drives the access window moving device to close the access window after the performance of the work.
摘要:
An opening and closing device that opens and closes an access port opened from a substantially cylindrical working platform disposed inside a reactor vessel and used to access a nozzle stub of the reactor vessel from the inside of the working platform, the opening and closing device includes: a cover that is slidable along an outer peripheral surface or an inner peripheral surface of the working platform from a closing position where the access port is closed to an opening position where the access port is opened; and moving device for sliding the cover.
摘要:
Electronic equipment is provided with a board 24a that includes an antenna circuit for transmitting and receiving a wireless signal and a ground pattern 24c for electrically grounding the antenna circuit, and a second casing 23 formed integrally with an antenna holding portion 23f for holding the board 24a. At least the antenna holding portion 23f in the second casing 23 is formed of a conductor. A clip 40 sandwiches the antenna holding portion 23f and the board 24a in a state where the ground pattern 24c and the antenna holding portion 23f are in contact with each other.
摘要:
A semiconductor device includes a die pad, the die pad including a first surface and a second surface, a first chip arranged on the first surface, the first chip including a first side and a second side crossing to the first side, a second chip arranged on the first surface, a plurality of first recesses formed on the first surface, a plurality of second recesses formed on the first surface, the plurality of second recesses being different from the first plurality of recesses in at least one of size and geometry, a wire, a resin, and a lead, one end of the lead being connected to another end of the wire and a part the lead being encapsulated by the resin. The plurality of first recesses includes a third recess and a fourth recess, and the first chip is arranged in a first area.
摘要:
A semiconductor package comprises a conduction member, a semiconductor chip mounted on and electrically connected to the conduction member, and a sealing body configured to seal the conduction member and the semiconductor chip. The conduction member comprises a power supply section configured to supply a power voltage to said semiconductor chip, a ground section configured to supply a ground voltage to the semiconductor chip, and a signal section connected to a signal terminal of the semiconductor chip. The power supply section, the ground section, and the signal section are arranged so as not to overlap each other. At least a part of said ground section is exposed on an under surface of the sealing body. The power supply section comprises an exposed region of which bottom surface is exposed on the under surface, and a plurality of power hanging-pin region configured to extend to a side of the sealing body from the exposed region.
摘要:
A breakthrough buffer for a mechanical press (1) includes at least one buffer body (20) disposed between punch slide (2) and lower press frame (7) to cushion punch plate (3) during breakthrough of punch (4) through a workpiece, a timing regulator (40, 70, 90) connected to each buffer body for regulating timing of buffering during breakthrough, and a control system (60) to provide a command signal to this regulator to minimize noise or vibration occurring during the breakthrough. The control system includes a controller (63) which is responsive to the output of noise sensor (61) or vibration sensor (65) during breakthrough. The buffer body can include fluid driven buffer piston (22) in a buffer cylinder (21), with the buffer piston being associated with a guidepost (5). Alternatively, the buffer body can include piston (82) which contacts the guidepost and which is fluid driven (30, 81) in opposition to spring (83). The timing regulator can include an annular guide (46, 71) which is movable vertically by stepping motor (41) and worm gear drive (42, 44). A locking mechanism (73) can restrain trailing whirl of the guide. Alternatively, the timing regulator can include regulating piston (94) in regulating actuator (93), with fluid pressure on one side being controlled by proportional valve (91) responsive to the command signal, while fluid pressure on the other side is applied to each buffer piston.
摘要:
The removal starting position (8S1) of a first removal process and the four removal starting positions (8S21-8S24) in a second removal process are established on an imaginary circle (7I) with a prescribed radius (R) that is inscribed in the apex (7C) of an incomplete thread part (7a). In each removal process, the tip of the screw thread cutting tool shaves off the apex (7C) of the incomplete thread part (7a) into respective recesses, contacting the imaginary inscribed circle (7I) from the outside (above). The multiple cutting surfaces of the apex (7C) are formed in parallel helices (that is, as mutually adjacent helical recesses) from the starting position to the ending position of the incomplete thread part. Points and burrs in the incomplete thread part can thereby be eliminated or reduced without loss of the ability to screw together with a partner threaded fastener (threaded portion).
摘要:
A projecting portion 52 which becomes convex in radial direction is formed in a rubber elastic body 5 for connecting together an inner cylindrical body 3 mounted to a shaft portion 21a of a lower shift lever member 21 by external interfit and an outer cylindrical body 4 mounted to a cylindrical portion 22a of an upper shift lever member 22 by internal interfit. Formed in an inner peripheral surface of the outer cylindrical body 4 is a recessed portion 42 which becomes concave with clearances C1 and C2 of respective given amounts left between the recessed portion 42 and the projecting portion 52. This makes it possible to manufacture a shift lever bush 1 having a two-stage spring characteristic at low cost.