摘要:
There is provided a plant cultivating apparatus for saving space in an early stage of growth of plants, increases an amount of plants cultivated per unit space to achieve higher space efficiency, and which provides an optimum environment corresponding to the growth of the plants. The plant cultivating apparatus comprises a plurality of cultivation tray storage shelves arrayed in a plurality of tiers and a plurality of rows, each of the plurality of cultivation tray storage shelves being able to store a cultivation tray capable of cultivating a plurality of plant stocks, a cultivation tray transferring mechanism for moving the cultivation tray, and a handling mechanism capable of gripping and moving the plurality of plant stocks individually from the cultivation tray.
摘要:
There is provided a plant cultivating apparatus for saving space in an early stage of growth of plants, increases an amount of plants cultivated per unit space to achieve higher space efficiency, and which provides an optimum environment corresponding to the growth of the plants. The plant cultivating apparatus comprises a plurality of cultivation tray storage shelves arrayed in a plurality of tiers and a plurality of rows, each of the plurality of cultivation tray storage shelves being able to store a cultivation tray capable of cultivating a plurality of plant stocks, a cultivation tray transferring mechanism for moving the cultivation tray, and a handling mechanism capable of gripping and moving the plurality of plant stocks individually from the cultivation tray.
摘要:
In a silent chain comprising interleaved and relatively pivotable rows of link plates, protrusions formed in the link plates contact relatively pivotable link plates in adjacent rows so that the area of contact is reduced. The protrusions can be annular, or they can be in the form of arcs that are of a size and position such that the arcuate protrusions of each plate do not interfere with the arcuate protrusions of an adjacent plate as the chain bends during use. The plates can have rectangular protrusions, or arcuate protrusions each consisting of an arc-shaped collection of dot-shaped protrusions.
摘要:
There is disclosed an electrolyte medium which makes it possible to significantly simplify device structure and detection procedure as well as to detect photocurrent with high sensitivity and accuracy, in specific detection of an analyte with use of photocurrent generated by photo-excitation of a sensitizing dye. The electrolyte-containing sheet comprises a hydrous substrate; and an electrolyte contained in the hydrous substrate. The electrolyte-containing sheet is used as an electrolyte medium in specific detection of an analyte with use of photocurrent generated by photo-excitation of a sensitizing dye. A gel matrix or a water-absorbent substrate can be used as the hydrous substrate.
摘要:
An oil tight type chain tensioner applies tension to a chain used in an engine. The tensioner includes a housing, in which oil is sealed, and a reciprocating rod extending from the interior of the housing to the exterior for pressing the chain. An oil seal is located between the outer circumferential surface of the rod and the inner circumferential surface of the housing. A reservoir for retaining the oil is communicated with the interior of the housing. This structure permits the oil to flow between the interior of the housing and the reservoir in correspondence with the reciprocation of the rod. The reservoir has a hole for permitting air communication from the interior of the reservoir to the exterior but restricting an oil flow from the exterior of the reservoir to the interior.
摘要:
A silent chain is constituted by a number of articulately connected link plates each having an engagement surface for meshing engagement with teeth of a sprocket. The link plates are press-formed so that the engagement surface includes a smooth sheared surface. All of the link plates have respective sheared surfaces along not more than 60% of the thickness of the link plates. In order to reduce noises produced when the link plates mesh with the sprocket teeth, more than 50% of the link plates have respective sheared surfaces along 7 to 15% of the thickness of the link plates and are arranged randomly in the silent chain.
摘要:
A silent chain transmission utilizes two different kinds of link plates. In a first kind of link plate, the inner flank pitch line is farther than the outer flank pitch line from the chain pitch line. In a second kind of link plate the inner flank pitch line is closer than the outer flank pitch line from the chain pitch line. Every four successive links includes at least one link composed of one type of link plate and at least one link composed of the other type of link plate.
摘要:
A silent chain includes guide links and articular links arranged in the longitudinal direction of the chain. The guide links each include one or more guide link plates, and the articular links each include two or more articular link plates. When the chain is in the straight-line state, the inside flank of each meshing tooth of any one of the link plates projects outwardly from the outside flank of each meshing tooth of another laterally adjacent one of the link plates. The projecting length of the inside flank relative to the outside flank is allowed to vary between the adjacent links, either in a random fashion or in a regular alternate fashion, along the length of the chain. By thus providing different projecting lengths of the chain's inside tooth flanks, the sliding engagement start time of sprocket teeth relative to the inside tooth flanks of the individual link plates is allowed to vary between the adjacent links, so that the periodic meshing sounds can be prevented from resonating to get louder, with the result that the overall noise level can be minimized.
摘要:
Link plates connected together by connecting members to form an endless silent chain each include a pair of teeth and a pair of connecting holes each receiving therein one of the connecting members. The teeth each have an outer flank, an arcuate tip end portion, and an inner flank. The outer flank has a rectilinear tooth face having an intermeshing point, and a tooth length extending from the intermeshing point toward a tip end of each tooth. The tooth length is 5 to 15% of a pitch between the connecting members. The tip end portion has a first arc adjacent to the outer flank and a second arc adjacent to the inner flank, the second arc having a smaller radius of curvature than the first arc. The shortest distance from a junction between the first and second arcs of the arcuate tip end portion to a face angle forming line of the outer flank is 0.5 to 3.0% of the pitch between the connecting members. With this construction, the silent chain can decrease a collision speed with respect to the tooth face of a sprocket at the time of intermeshing to thereby reduce noises, and provide a smooth and positive intermeshing with the sprocket.
摘要:
A plate for a silent chain has a side punched into a forked shape for engagement with a sprocket. The forked side of the plate has inner engaging surfaces opposing each other, outer engaging surfaces, and an arcuate leg-side end surface connecting the inner engaging surfaces. The leg-side end surface, on which stress is likely to be concentrated, has a shear face tissue along at least 70% of the thickness of the plate. A silent chain having such a plate has a high plate fatigue strength and enhanced durability and reliability, and can be manufactured at a low cost.