JPH044908U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the hydraulically movable crown device of the present invention, Fig. 2 is a front view of the same, and Fig. 3 is a plan view showing one-half of the motor assembly used in the embodiment. Figure 4 is a hydraulic circuit diagram of one embodiment, Figure 5 is an electrical circuit diagram of the same, Figure 6 is a perspective view of another embodiment, Figure 7 is a side view of the asphalt finisher, and Figure 8 is a side view of the asphalt finisher. The same plan view, FIGS. 9a and 9b are explanatory diagrams of the crown slope by the main screed device,
Figures 10a, b, and c are explanatory diagrams of paving conditions using a bendable telescopic screed, Figure 11 is a front view of a screeding device in which the main screed device is equipped with a bendable telescopic screed, and Figure 12 is a conventional main screed. A perspective view of the crown device, and FIG. 13 is a partially cutaway front view of a conventional auxiliary crown device. 14, 25...Boss nut, 17...Motor assembly, 18...Casing, 20...Output shaft, 20a...Male thread, 29...Hydraulic motor, 30
... Rotation detector, 35 ... Solenoid switching valve, 35a,
35b...Solenoid, 39...Hydraulic pump, 4
6...Converter, 47...Crown amount indicator, 48
...Push button switch panel, 51...Hydraulic cylinder, 51a...Cap side, 51b...Piston rod, 61...Main screed, 62...Auxiliary screed.

Claims (1)

[Claims for Utility Model Registration] (1) A motor assembly in which an output shaft having a male thread is rotated by a hydraulic motor, and a rotation detector is connected to the hydraulic motor, and an electromagnetic motor connected to the hydraulic motor. a switching valve; a hydraulic pump connected to the electromagnetic switching valve and supplying pressure oil at a predetermined pressure to the hydraulic motor via the electromagnetic switching valve; a crown amount indicator connected to a power source; and the rotation detector. a converter connected to the crown amount indicator, which inputs the signal of the rotation detector, converts it into an angle signal of the crown slope, outputs it to the crown amount indicator, and is connected to a power source; and the electromagnetic switching valve. the hydraulic motor assembly is disposed between a pair of left and right screeds, the casing side of the hydraulic motor assembly is swingably attached to one of the screeds, and the output shaft has a male thread. A hydraulically movable crown device for a screed device, characterized in that the screw is screwed into a female thread of a boss nut swingably attached to the other screed. (2) a hydraulic cylinder having a position sensor; an electromagnetic switching valve connected to the hydraulic cylinder; and a hydraulic pressure connected to the electromagnetic switching valve and supplying pressure oil at a predetermined pressure to the hydraulic cylinder via the electromagnetic switching valve. A pump, a crown amount indicator connected to a power source, and a crown amount indicator connected to the position sensor and the crown amount indicator, inputting the signal of the position sensor, converting it into an angle signal of the crown slope, and transmitting it to the crown amount indicator. The hydraulic cylinder is arranged between a pair of left and right screeds, and the hydraulic cylinder is connected to the cap side of the hydraulic cylinder. A hydraulic movable crown device for a screed device, characterized in that a piston rod is swingably attached to one screed, and a piston rod tip is swingably attached to the other casing.