| 摘要 |
A three-axle, "six-wheel" pusher unit for a carwash system of the type wherein an endless chain moves under a slotted track. The pusher employs a straight bar which can project out of the track, with the track-contacting rollers positioned at the end of the bar and the wire-engaging rollers positioned at an intermediate position. The tire-contacting rollers are formed without internal inletting or open volumes and held in place by button-headed bolts and washers. The under-track forward rollers are secured to a removable axle which is held in a sleeve welded to the end of the bar. This axle is secured by means of a machine screw through the axle and sleeve and nut outside the sleeve. The head of the machine screw is smaller than the hole in the sleeve into which it fits, so as to bear against the axle and hold it tight against the opposite inner surface of the sleeve. In a second embodiment, a hollow rectilinear and tubular bar is employed with the third axle received through side holes and similarly secured.
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