Patent ID: 6336625
Filing Date: 2002-01-08
Classification: B25B,B60G,Y10T

Abstract:
An adjustable shock-absorber mounting structure comprising:a base frame, the base frame having two longitudinal sliding slots aligned at two opposite vertical side walls thereof; two parallel rails longitudinally mounted in said base frame, a screw rod longitudinally mounted in said base frame between said rails; a hand wheel fixedly fastened to said screw rod above said base frame and adapted to rotate said screw rod in said base frame; an upper carrier mounted in said base frame and adapted to move along said rails upon rotation of said screw rod, said upper carrier having a center screw hole, which receives said screw rod; a bottom carrier mounted in said base frame and adapted to move along said rails below said upper carrier, said bottom carrier having a center through hole for the passing of said screw rod and two rod members horizontally extended from two opposite lateral sides thereof and respectively inserted through the sliding slots of said base frame; a hydraulic cylinder spaced below said base frame, said hydraulic cylinder having a bottom shelf and a reciprocating rod fixedly connected to said bottom carrier and adapted to move said bottom carrier along said rails relative to said upper carrier; two return springs bilaterally connected between two distal ends of the bottom shelf of said hydraulic cylinder and the rod members of said bottom carrier to impart a downward pressure to said bottom carrier toward said hydraulic cylinder; an oil pipe connected to said hydraulic cylinder, a relief valve installed in said oil pipe and controlled to release air from said oil pipe for enabling hydraulic oil to flow from said hydraulic cylinder to said oil pipe; and a hand pump connected to one end of said oil pipe remote from said hydraulic cylinder and adapted to pump hydraulic oil from said oil pipe to said hydraulic cylinder, and shock-absorber holder means selectively installed in said upper carrier and said bottom carrier and adapted to hold a shock-absorber, said shock-absorber holder means selected from a combination of a group consisting of at least one first shock-absorber holder, at least one second shock-absorber holder, at least one third shock-absorber holder, and at least one fourth shock-absorber holder, said at least one first shock-absorber holder comprising an arched connecting plate, said arched connecting plate having a longitudinal series of mounting holes, and two arms selectively connected to the mounting holes of said arched connecting plate and adapted for fastening to said upper carrier or said bottom carrier, the arms of said at least one first shock-absorber holder each comprising a plurality of hooked lugs disposed at an inner side near and adapted to hold a shock-absorber, said at least one second shock-absorber holder comprising two arms adapted for fastening to said upper carrier or said bottom carrier and two swivel catch pawls selectively fastened to vertically spaced mounting holes at each of the arms of the corresponding second shock-absorber holder and locked by respective lock means, said at least one third shock-absorber holder comprising two arms each having a rear end fastened to said upper carrier or said bottom carrier and a front end, two stems vertically adjustably fastened to the front end of the arms of the corresponding third shock-absorber holder and fixed at the desired elevation by tightening means, and two catch pawls respectively mounted on the stems of the corresponding third shock-absorber holder, said at least one fourth shock-absorber holder comprised of a U-shaped catch pawl and adapted for fastening to said upper carrier or said bottom carrier.