摘要:
A measuring arm (12) is attached to a frame (5a) supporting a screed (5). Height sensors (13) and (14) are attached to the measuring arm (12), and a height sensor (19) is also attached to the arm (18) of the screed (5). The spacing must remain constant between the rear end of the screed (5) and the height sensor (19), between the height sensor (19) and the height sensor (14), and between the height sensor (14) and the height sensor (13). A distance sensor to calculate the travel distance is provided on the tractor unit (1). The relative height Ho of both height sensors (13) and (14) to the screed (5) must always remain constant, regardless of the tilt of the screed (5) and the measuring arm (12). The sensors (13), and (14), and (17) are connected to the arithmetic unit (30). The height sensor (19) is connected to the arithmetic unit (40). The arithmetic unit (30) receives an output signal from the height sensors (13) and (14) and calculates the thickness of the pavement. The arithmetic unit (40) detects the uneven level of the unpaved surface on the basis of the output signal from the height sensor (19) and controls the screed (5) in order to offset the unevenness.The operating conditions are set on the control unit (30) via a recording medium such as an IC card.
摘要:
Efficient paving operation requires that the levelling operation of asphalt be carried out accurately along a reference line which follows a given direction along a roadside. A simple and effective automatic control device for controlling the steering direction in conjunction with adjustments of the screed for an asphalt finisher (shortened to finisher) is presented. The control device automatically regulates the extension or retraction of the screeds on both sides of the finisher in reference to a visual display of the reference line following some objects along the roadside. The visual detection system of control is simple and economical and provides an accurate control over the direction of paving.
摘要:
An automatic steering device is presented for controlling the direction of travel of an asphalt finisher during a paving operation. The device is provided with a laser generator (18) which projects a laser beam of a slit shape on a series of objects along the roadside which is selected to served as a reference line (A). An image recording device (17), a CCD camera, is disposed on the vehicle member (2), which records the projected laser light illuminating the objects and outputs a generated image (Ba) to a master controller (22). The master controller (22) determines the current deviation of the vehicle member (2) from the reference line (A) by the changes in the position of the generated image (Ba), and operates the automatic control device so as to steer the vehicle member (2) in the correct direction to permit the asphalt finisher to follow the reference line (A).
摘要:
The invention provides a label cassette retaining device for a labeler constituted as a combination of a labeler unit and a label cassette loadable in the labeler unit and being equipped with a label lateral restriction section operable by a grip. The retaining device comprises a first engagement means provided at the forward end of the labeler unit and the label cassette, a second engagement means provided at the rearward end thereof, and a third engagement means constituted by the grip and a slotted engagement section provided on the labeler unit.
摘要:
An integrally foamed article comprises a threefold-laminated cover material and a body foam bonded together thereto. The threefold-laminated cover material is preliminarily configured into a substantially closed hollow shape corresponding to a desired final contour into which a foamable mixture such as reactive polyurethane stock is poured and allowed to foam and expand to adhere integrally therewith without any penetration into said cover material. The threefold-laminated cover material is composed of an outermost permeable cover fabric such as knitted or woven fabric, an intermediate thin foam layer bonded to the inside of said fabric, and an innermost shielding film such as polyvinyl chloride or polyurethane film formed therein with a number of minute air holes permitting gases and air to be passed therethrough, but not permitting said foamable mixture to enter. The shielding film is strongly bonded to the inside of said intermediate thin foam layer, and not only assures excellent fluidity of the foamable mixture poured therein due to its smoothness, but also prevents penetration of said foamable mixture into said intermediate layer and cover fabric so as to ensure production of formed article, particularly of thin thickness, having uniform resiliency and softness and comfortable touch.
摘要:
A noise inhibitor for preventing a creaking noise production consisting of: a non-ionic or a carboxylic acid type negative ionic oil-soluble surfactant; and water or a wax emulsion solution, the surfactant being diluted by 2 to 15 times with the water or the wax emulsion solution. The range of HLB of the surfactant is from 8.0 to 10 and the range of pH of the noise inhibitor is from 7.5 to 9.5.
摘要:
The invention relates to a paving materials loading apparatus. In particular, a paving materials loading feeder 16 is so disposed that a lower end 19a of a loading frame 19 thereof is connected to a receiving hopper 17, a discharge port 19c, 19d is formed in a middle part of the loading frame 19 between the lower end 19a and a discharge end 19b, and a lid 35 is provided on the discharge port 19c, 19d so as to be openable and closable. The loading feeder 16 may also be raised and lowered. The invention also relates to a paving machine provided with a front hopper 2 and a rear hopper 3, on a self-propelled vehicle 1. In particular, the paving materials loading apparatus of the above construction is mounted on the self-propelled vehicle 1 so that the discharge port 19c, 19d of the loading feeder 16 is located above the front hopper 2 and the discharge end 19b of the loading feeder 16 is located above the rear hopper 3.
摘要:
A label feed pitch change-over mechanism for a labeler comprising a pitch change-over section equipped with stops and disposed at the bottom of the labeler to be slidable in the longitudinal direction thereof. A claw reciprocator for engaging the backing strip of a continuous label strip and drawing the continuous label strip from a roll. Gears mechanically linked with a hand-operated lever for driving the claw reciprocator. The gears are provided with cams engageable with the stops. The label feed pitch of the claw reciprocator can be shifted between short and long pitch states by sliding the pitch change-over section to bring the stops into or out of engagement with the cams.
摘要:
A process for molding a structural body of ceramic or other granular materials which has hollow portions inwardly enlarged or complicatedly configured, which process comprises preparing a removable insert member which is fusible at temperatures not affecting an unbaked structural body and has the contours corresponding to an intended hollow portion, molding a structural body with ceramic or other granular material integrally with the removable insert member as by injection or transfer molding, heating as by electricity or hot fluids the insert member to cause the latter to be fused and formed with a through hole extending from end to end of the member, and blowing hot air into the through hole during a preliminary baking of the unbaked structural body so as to completely remove the insert member thereby to obtain a molded structural body of granular material provided with complicated hollow portions therein.
摘要:
A method for recycling in place an asphalt mixture layer of a paved road continuously, while moving a self-propelled vehicle system, which comprises a step of heating and softening the asphalt mixture layer, a step of scraping and breaking said hot and softened asphalt mixture layer and keeping the softened mixture at a temperature sufficient not to form an aggregate, to prepare an asphalt mixture having a single-grained structure, a sieving step of classifying said asphalt mixture having a single-grained structure into a plurality of grain size groups, a step of designing mix proportions for converting said asphalt mixture to a recycled asphalt mixture by the use of said plurality of grain size groups classified, a step of mixing uniformly said recycled asphalt mixtures having designed mix proportions, and a step of spreading and compacting said recycled asphalt mixtures having been mixed uniformly, to thereby form a recycled asphalt mixtures layer.