| 摘要 |
A concrete consolidating and smoothing means for inserter apparatus of the type which is movable over an expanse of plastic concrete and which includes inserter means to embed an elongated strip of joint material in the concrete at a predetermined depth. The consolidating and smoothing means comprises a first pan which is adapted to ride upon the surface of the concrete in trailing relation to the inserter means, and further comprises a second pan having a trailing portion adapted to ride upon the surface of the concrete in trailing relation to the first pan for smoothing the concrete surface. Vibration means are coupled to the first pan for vibrating the concrete to consolidate the concrete about the embedded strip, and the rate of vibration is adjustable. The first pan can be vibrated at a relatively high rate to effect good consolidation without affecting the capability of the second pan to achieve smoothing. The second pan is preferably mounted to the first pan by vibration isolation means so that vibration of the first pan is generally isolated from the second pan. The second pan preferably includes lateral portions extending along opposite sides of the first pan to confine any relatively fluid concrete produced by vibration of the first pan and prevent it from flowing away, as would be the case on a slope. The relative lack of vibration of the second pan enables it to be used as the level sensor for coupling to the control means which controls the vertical position of the joint insertion means.
|
