An anchoring system for attaching equipment to a building foundation. The system includes an insert attached to the foundation by an adhesive, wherein the insert includes a flange that is positioned on a top surface of the foundation. The system also includes a washer element having a recessed portion for receiving the flange, wherein the washer also contacts the top surface. In addition, the system includes a rod element having a reference element, wherein the rod element is threadably engaged with the insert and the washer and wherein when the reference element is aligned with a reference plane indicative of level equipment, the washer is tightened against the top surface to preload the rod element to minimize deflection of the equipment.

A device with an adjustment bolt includes a bolt attachment wall, an adjustment bolt screwed with an internal thread hole of the bolt attachment wall, a locknut screwed with the adjustment bolt, a cover that surrounds the adjustment bolt and the locknut, and a stopper unit that prevents removal of the cover from the locknut. The stopper unit includes an inner circumference groove of the cover fitted around a C-shaped retaining ring, and an external circumference groove of the locknut fitting within the retaining ring. The external circumference groove includes a first groove portion having a large-diameter groove bottom that restricts contraction and removal of the retaining ring fitted within the inner circumference groove, and a second groove portion provided continuously for the first groove portion and having a small-diameter groove bottom that allows contraction and removal of the retaining ring fitted within the inner circumference groove.

A device with an adjustment bolt includes a bolt attachment wall, an adjustment bolt screwed with an internal thread hole of the bolt attachment wall, a locknut screwed with the adjustment bolt, a cover that surrounds the adjustment bolt and the locknut, and a stopper unit that prevents removal of the cover from the locknut. The stopper unit includes an inner circumference groove of the cover fitted around a C-shaped retaining ring, and an external circumference groove of the locknut fitting within the retaining ring. The external circumference groove includes a first groove portion having a large-diameter groove bottom that restricts contraction and removal of the retaining ring fitted within the inner circumference groove, and a second groove portion provided continuously for the first groove portion and having a small-diameter groove bottom that allows contraction and removal of the retaining ring fitted within the inner circumference groove.

A method of adjusting preload on a bearing assembly of a wheel mounted on an axle or spindle with a lock nut includes mounting a preload adjustment tool onto a threaded axle or spindle. The load on the bearing assembly is increased using the tool. The wheel on the axle or spindle is rotated to set the bearing assembly. The load on the bearing assembly is decreased to a desired maximum preload on the bearing. After decreasing the load on the bearing assembly to a desired maximum preload, the lock nut is tightened by hand until the lock nut cannot be further tightened. The lock nut is loosened by rotating the lock nut to a preferred location where a guide mark on the tool aligns with one mark on the lock nut located closest to the guide mark wherein a resultant preload on the bearing assembly is within a preset range from the desired maximum preload.

A method of adjusting preload on a bearing assembly of a wheel mounted on an axle or spindle with a lock nut includes mounting a preload adjustment tool onto a threaded axle or spindle. The load on the bearing assembly is increased using the tool. The wheel on the axle or spindle is rotated to set the bearing assembly. The load on the bearing assembly is decreased to a desired maximum preload on the bearing. After decreasing the load on the bearing assembly to a desired maximum preload, the lock nut is tightened by hand until the lock nut cannot be further tightened. The lock nut is loosened by rotating the lock nut to a preferred location where a guide mark on the tool aligns with one mark on the lock nut located closest to the guide mark wherein a resultant preload on the bearing assembly is within a preset range from the desired maximum preload.

The present disclosure relates to a replaceable quick connector, which includes a connector board, a connector base, a circuit board and a locking nut, where a bottom center of the connector board extends downwards to form a plugging column, two clamping blocks are disposed on an outer wall of the plugging column, clamping convex points are formed in upper parts of the clamping blocks, the clamping blocks are arranged in relative to 180 degrees, a clamping sheet is disposed at a top of the connector base, a plugging hole for plugging the plugging column is formed in a center of the clamping sheet, the plugging hole extends inwards to form two clamping bases, the clamping bases are arranged in relative to 180 degrees.

The present disclosure relates to a replaceable quick connector, which includes a connector board, a connector base, a circuit board and a locking nut, where a bottom center of the connector board extends downwards to form a plugging column, two clamping blocks are disposed on an outer wall of the plugging column, clamping convex points are formed in upper parts of the clamping blocks, the clamping blocks are arranged in relative to 180 degrees, a clamping sheet is disposed at a top of the connector base, a plugging hole for plugging the plugging column is formed in a center of the clamping sheet, the plugging hole extends inwards to form two clamping bases, the clamping bases are arranged in relative to 180 degrees.

A fixation assembly for affixing a first object to and variably spaced from a second object. The assembly comprises a male fastener and a female fastener. The male fastener comprises a bolt-shaped part having a circumferential outer surface. The surface includes alternately on a circumferential path, in a cross-sectional plane of the part, at least one ridged section and at least one plain section. The female fastener comprises a tubular part having a circumferential inner surface. The inner surface includes alternately on a circumferential path, in a cross-sectional plane of the part, at least one ridged section and at least one plain section. The male fastener can be inserted into the female fastener such that its ridged section coincides with the female fastener plain section. Either the male or female fastener is configured to be rotated relative to the other, thereby engaging respective ridges of the two fasteners.

A fixation assembly for affixing a first object to and variably spaced from a second object. The assembly comprises a male fastener and a female fastener. The male fastener comprises a bolt-shaped part having a circumferential outer surface. The surface includes alternately on a circumferential path, in a cross-sectional plane of the part, at least one ridged section and at least one plain section. The female fastener comprises a tubular part having a circumferential inner surface. The inner surface includes alternately on a circumferential path, in a cross-sectional plane of the part, at least one ridged section and at least one plain section. The male fastener can be inserted into the female fastener such that its ridged section coincides with the female fastener plain section. Either the male or female fastener is configured to be rotated relative to the other, thereby engaging respective ridges of the two fasteners.

In a securing element for connecting two parts, in particular for a screw connection, the securing element is ring-shaped. The securing element has an outer profile along the outer diameter and an inner profile along the inner diameter. The outer profile and the inner profile are both formed by a plurality of profile units. The number of profile units of the outer profile and the number of profile units of the inner profile correspond to the number of graduation marks at different scales according to the principle of a vernier scale, the number of profile units of the outer profile differing by at least 1 from the number of profile units of the inner profile. In precisely one position, a profile unit of the outer profile is exactly opposite a profile unit of the inner profile.