公开(公告)号：US3756640A

公开(公告)日：1973-09-04

申请号：US3756640D

申请日：1972-04-28

Applicant: GEN AM TRANSPORT

Inventor： JOHNSON E

IPC: F16B41/00 ,  F16J13/06 ,  F16J13/16 ,  A47J36/10 ,  B65D45/16

CPC classification number: F16B41/005 ,  F16J13/06 ,  F16J13/16 ,  Y10T292/223

Abstract: A handwheel lock particularly designed for use with a hatch cover on a vessel such as a railroad tank car. The apparatus is used with a threaded bolt such as an eye-bolt and includes a handwheel assembly which surrounds a nut which is threadedly connected to the bolt. The handwheel includes a pair of spaced apart sets of ratchet teeth and the nut includes a detent arrangement. In one embodiment, a spring is used to bias the handwheel to a position in which the detent on the nut is in engagement with one set of ratchet teeth so that the handwheel can be turned to tighten the nut on the bolt. If the handwheel is turned in the other direction, it will merely ratchet on the nut and torque will not be transmitted to the nut. To loosen the nut, the handwheel must be lifted against the force of the spring so that the detent engages the other set of ratchet teeth to thereby permit the transfer of torque from the handwheel to the nut. In a modified form, springs are used to center a handwheel so that the detent is between a first and second set of ratchet teeth. In order to tighten the nut on the bolt, the handwheel must be pushed down and then rotated. In order to loosen the nut, the handwheel must be lifted and then turned. A simulated lock is positioned in the handwheel to give a visual impression that a key is required to loosen the handwheel.

Abstract translation: 手轮锁特别设计用于在诸如铁路车辆的船舶上的舱口盖上使用。 该装置与诸如眼睛螺栓的螺栓一起使用，并且包括手轮组件，该手轮组件围绕螺纹连接到螺栓上的螺母。 手轮包括一对间隔开的棘轮齿组，并且螺母包括制动装置。 在一个实施例中，弹簧用于将手轮偏置到螺母上的棘爪与一组棘轮齿接合的位置，使得可以转动手轮以将螺母拧紧在螺栓上。 如果手轮沿另一方向转动，则只能将棘轮拧到螺母上，扭矩不会传递到螺母。 为了松开螺母，手轮必须克服弹簧的力而被提起，使得止动器与另一组棘轮齿接合，从而允许将扭矩从手轮传递到螺母。 在改进形式中，弹簧用于使手轮居中，使得棘爪位于第一组棘轮齿和第二组棘齿之间。 为了拧紧螺栓上的螺母，手轮必须按下然后旋转。 为了松开螺母，手轮必须抬起然后转动。 模拟锁位于手轮中，以给人以视觉印象，需要钥匙来松开手轮。