Kajima Corporation

Kajima Road Company

Kasima Road Company

Masayuki Yazawa

Mitsuo Fukukawa

Yoshiharu Okamoto

Kazumitsu Asai

Seiichiro Takizawa

Kouhei Mio

Tetsuo Tanaka

Apparatus is disclosed for grading and measuring surfaces such as roadbeds which have curved and inclined profiles which may have different shapes in successive transverse sections of the roadbed. A blade and screw cutter are supported by a frame which extends over the surface being worked, and these tools are movable along this frame. The tools are movable toward and away from the surface being shaped in response to a control means which has memorized the appropriate positions, or by reference to a deformable rule which may also be reshaped in response to computer-memorized data. According to a disclosed method, the rule is reshaped for different sections of the surface. An apparatus for checking and measuring a surface which has a curved profile includes a plurality of piston-cylinder units which are mounted on a main frame. A flexible rule is connected by the piston cylinder units to the main frame, and controls are provided for setting the extended positions of the piston-cylinder units to control the shape of the flexible rule.

Method and apparatus for grading and measuring a surface having a curved

An inclined roadbed is paved by vehicles which are connected by wires to uphill anchor vehicles. A paving vehicle on the inclined surface has a device for projecting a laser beam to a beam-receiving device on its respective anchor vehicle. The height of the wire connection point on the anchor vehicle is changed in response to signals from the beam-receiving device, so as to equalize the forces exerted on the inclined surface by the left and right sides of the paving vehicle. For paving surfaces such as automobile test tracks which have compound curvatures, a pavement laying apparatus has a curved surface formed by a plurality of interconnected screed plates which are each connected to a respective screw jack. A microcomputer stores data representing the desired shape of the pavement at different points along the travel path of the apparatus. Signals representing the travel distance of the apparatus are sent to the microcomputer, and the microcomputer sends output signals which control the jacks to produce a pavement surface which has the desired shape.

System for paving inclined and/or curved surfaces

Apparatus is disclosed for grading and measuring surfaces such as roadbeds which have curved and inclined profiles which may have different shapes in successive transverse sections of the roadbed. A blade and screw cutter are supported by a frame which extends over the surface being worked, and these tools are movable along this frame. The tools are movable toward and away from the surface being shaped in response to a control means which has memorized the appropriate positions, or by reference to a deformable rule which may also be reshaped in response to computer-memorized data. According to a disclsoed method, the rule is reshaped for different sections of the surface. An apparatus for checking and measuring a surface which has a curved profile includes a plurality of piston-cylinder units which are mounted on a main frame. A flexible rule is connected by the piston cylinder units to the main frame, and controls are provided for setting the extended positions of the piston-cylinder units to control the shape of the flexible rule.

A compactor having the roller shafts mounted for changing the inclination of the roller through a linkage system. The compactor is connected to an anchor vehicle by a tension member which deters lateral shifting and has a sensor indicating the inclination angle. The sensor is connected to a control which varies the tension.

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Chiba, Japan

Masayuki Yazawa