REVERSING GEAR WITH BELT PULLEY DRIVE

• Main Authors: WALTER GUTBROD, WOLFGANG GUTBROD
• Format: Patent
• Language: English
• Published: 26.04.1972
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

1,272,469. Reversing gearing. W. GUTBROD and W. GUTBROD. 22 Oct., 1969 [7 May, 1969], No. 51682/69. Heading F2D. A forward-neutral-reduced ratio reverse gear belt pulley drive comprises two V-belt pulleys 30, 31 coaxially arranged on a driving shaft 1, the former pulley 30 connected fast to the driving shaft 1 by an extended hub 3 on which the latter pulley 31 is freely journalled and to which a sun gear 6 is keyed at 5, the latter pulley having a flange 15 forming a ring gear 14 of a planetary gear, the carrier 9 of which is also journalled on the hub 3 and is formed with a brake rim 10, the arrangement including a spring-applied belt tensioner 24, 25 and cable 29 operated brake arm 12 simultaneously controlled by a single cable 36 via a lever 32 and cables 28, 29 such that with the control cable 36 released, the belt tensioner 24 is spring applied at 27 for forward drive from the pulley 30 to the driven pulley 23, neutral being obtained by pulling the cable 36 to release the tensioner 24, whereby the belt 20 slips and pulley 30 idles, and reduced ratio reverse is obtained by further pulling the control cable 36 to additionally apply the brake arm 12 to lock the carrier 9, whereby the driven pulley 23 is reversely driven by the pulley 31 via belt 17 at a reduced planetary ratio. In Figs. 1 to 3 (not shown), the freely mounted pulley, formed with the ring gear 15, additionally forms one half flange (18) of the other pulley, the other half flange 2 being connected as before, via a hub 3, to the driving shaft 1. In this arrangement, both forward and reduced ratio reverse drive of the pulley 23 is effected by the freely mounted pulley via the belt 17, the other belt 20 simply running around the tensioner pulley 24 which when applied, forwardly drives the freely mounted pulley at its flange 18 via the tensioned belt 20 from the driving shaft flange 2, and which when released via the control cable 36, allows the belt 20 to slip for neutral or further with the brake arm 12 engaged to lock the carrier for reverse drive at the reduced planetary ratio as before.