CN2252906Y

CN2252906Y - Impact energy absorber

Info

Publication number: CN2252906Y
Application number: CN 96204567
Authority: CN
Inventors: 骆永志
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-07
Filing date: 1996-05-07
Publication date: 1997-04-23
Anticipated expiration: 2006-05-07

Abstract

The utility model discloses an impact energy absorber used for absorbing the kinetic energy of a harmful object. Piston-type hydrodynamic absorption is adopted, and a cylinder barrel is composed of double layers of sleeve barrels. The volume change caused by the ingress and the egress of a piston rod into the cylinder barrel is compensated by a floating piston.

Description

The impact energy adsorber

This new application is in the kinetic energy that absorbs harmful object.

The absorption plant of the energy that impacts, the absorption plant of especially higher impact energy, volume are very big, and normally used spring adsorber can cause bounce-back, and power absorption is slow.The gas-filled type hydraulic shock absorber that has grown up since the sixties, volume is little, absorptivity is strong, bounce-back is little, changed the compensation way of the hydraulic shock absorber volume-variation that cylinder barrel causes because piston rod is come in and gone out in the past, strengthen the interior pressure bearing capacity of cylinder barrel, but the interior pressure bearing capacity of its cylinder barrel still is difficult to satisfy the requirement of greater impact power absorption.

This novel purpose is to improve the ability that hydraulic shock absorber absorbs impact energy by improving hydraulic shock absorber.

This is novel to be the intensity of thick-walled cylinder being calculated according to the academician Jia Daolin of the academy of sciences of Russia of realizing like this, the elastic carrying capacity of thick-walled cylinder, can improve by the way that adds initial stress in advance, promptly cylinder barrel is made bilayer, make between the inside and outside layer and be in the interference fit state, make the internal layer cylinder barrel be subjected to the effect of an initial pressure stress, when in clutch release slave cylinder is subjected to, pressing, on the internal layer cylinder barrel, produce tensile stress, wherein the part of tensile stress offsets with initial pressure stress, thereby improve the interior pressure bearing capacity of cylinder barrel, also just improved the absorptivity of adsorber.

This is novel owing to adopted fluid power to absorb and the floating piston compensation volume changes, and the gentle body contact of isolated work fluid, thereby volume is little, absorptivity strong, bounce-back is little, can use in any direction, has eliminated the emulsion of the fluid of working.

Fig. 1 is the gas-filled type adsorber, and Fig. 2 is the auto-compensating adsorber, and Fig. 3 is that rear stabilizer compensates adsorber automatically.(1) fixing bolt among the figure; (2) cylinder cap; (3) dust ring; (4) leading truck; (5) v-ring; (6) O-ring seals; (7) piston rod; (8) internal layer cylinder barrel; (9) outer cylinder barrel; (10) working piston; (11) floating piston; (12) O-ring seals; (13) back-up ring; (14) air chamber; (15) work fluid; (16) cylinder cap; (17) dust ring; (18) piston rod; (19) internal layer cylinder barrel; (20) outer cylinder barrel; (21) floating piston; (22), (23) O-ring seals; (24) working piston; (25) work fluid; (26) cylinder cap; (27) dust ring; (28) piston rod; (29) piston rod cap; (30) O-ring seals; (31) floating piston; (32) O-ring seals; (33) working piston; (34) internal layer cylinder barrel; (35) outer cylinder barrel; (36) work fluid.

Accompanying drawings embodiment, be illustrated in figure 1 as the gas-filled type adsorber, cylinder barrel is cylindrical, is made of double layer sleeve barrel, and the lower end of cylinder barrel and floating piston constitute sealed gas chamber, be filled with pressurized gas in the air chamber, O-ring seals is housed on the floating piston, work fluid is housed above the floating piston, working piston is contained in the piston rod top, connect with screw thread or welding, have throttle orifice on the working piston or between piston edge and cylinder barrel, leave the slit.The working piston original state is positioned at the cylinder barrel upper end, and there are cylinder cap, leading truck, O-ring seals, back-up ring, v-ring and dust ring in the cylinder barrel upper end, and it assembles as shown in the figure.Floating piston, working piston, leading truck, cylinder cap structure are as shown in Figure 1.Fig. 2 is the auto-compensating adsorber, cylinder barrel is that cylindrical double layer sleeve barrel constitutes, working piston is divided into upper and lower two chambeies with cylinder barrel, cavity of resorption is an active chamber, floating piston is installed in epicoele, form liquid storage cylinder between floating piston and the working piston, the liquid storage cylinder volume is transformable, by the upper and lower volume-variation of floating automatic compensating piston bar discrepancy cylinder barrel to cause of floating piston.Two O-ring seals are housed on the floating piston, have two holes of topping up exhaust on the floating piston, tight with the screw envelope, contacting of isolated gas of floating piston and work fluid, the volume sum that floating piston volume, working piston volume, piston rod enter the volume of fluid and fluid itself is drawn all on the cylinder cap piston presses down still and will be subjected to the effect of axial force during less than the cylinder barrel volume.Cylinder cap and cylinder barrel scyewed joint are equipped with dust ring on the cylinder cap, have throttle orifice on the working piston or leave the slit between piston edge and cylinder barrel, and working piston connects with scyewed joint or welding with piston rod.Working piston, floating piston, cylinder cap structure and assembling are as shown in Figure 2.For making piston rod have big stability, piston rod can adopt hollow tubular, as shown in Figure 3, cylinder barrel is that cylindrical double layer sleeve barrel constitutes, piston rod outer surface and cylinder barrel internal surface form sliding friction, and floating piston is contained in the piston rod, and working piston is installed in the piston rod top, between working piston and the floating piston, in piston rod, form liquid storage cylinder.O-ring seals is housed on the floating piston, has two holes of topping up exhaust on the floating piston, tight with screw envelope, have throttle orifice on the working piston, with connecting of piston rod available screw thread or welding.O-ring seals, cylinder cap, dust ring are equipped with in the cylinder barrel upper end.The piston rod upper end has bowl cover to fall into to prevent dust.Its erection drawing as shown in the figure.Three kinds of adsorbers with auto-compensating adsorber and rear stabilizer auto-compensating adsorber for well.

Claims

1. impact energy adsorber, fluid power adsorber particularly, utilize piston in liquid, to move, flow of liquid is throttle orifice or slit, edge generation damping force prevention piston motion on piston, the adsorber cylinder barrel is subjected to interior pressure simultaneously, it is characterized in that the adsorber cylinder barrel is made up of double layer sleeve barrel, the internal and external layer sleeve is in the interference fit state makes the internal layer tube be subjected to an initial action of compressive stress.

2. according to the described adsorber of claim 1, it is characterized in that, between adsorber and floating piston, form a sealed gas chamber in the adsorber lower end.

3. according to the described adsorber of claim 1, it is characterized in that floating piston is contained in above the working piston, between working piston and floating piston, form liquid storage cylinder, utilize the upper and lower floating compensation piston rod of floating piston to come in and go out volume-variation that cylinder barrel causes.

4. according to wanting profit to require 1 described adsorber, it is characterized in that piston rod adopts hollow tubular, floating piston is contained in the piston rod, working piston is below floating piston, between working piston and floating piston, form liquid storage cylinder, utilize the upper and lower floating compensation piston rod of floating piston to come in and go out volume-variation that cylinder barrel causes.