The shock absorber
(57) Abstract:The invention relates to the field of engineering to the field of cushioning protection, machines and other objects, allowing a limited degree of mechanical stress. The shock absorber includes a housing stock with an emphasis and additional holes, the valve with the ability to overlay additional holes in the piston during the reverse stroke, the sealing package and cooperating annular sealing ledge. The use of the proposed invention improves the operating conditions, increases the intensity of the shock absorber eliminates ad hoc flow of working fluid through technological gaps, to provide damping fluid in direct stroke, to reduce congestion at amortized object and increase reliability. 4 C.p. f-crystals, 3 ill. The invention relates to the field of engineering, namely the sphere of protection with shock absorbers objects, machines, devices, equipment, etc. that allow a limited degree of mechanical stress from the intense percussive impacts arising from blasting and seismic vibrations.The famous "pneumo-hydraulic omogenia reverse shaft, buxo, top buxu.The disadvantage of this shock absorber is the low value of the damping coefficient of the working slurry on forward and reverse strokes of the rod and the large dimensions of the shock absorber.Known shock absorber chassis of the aircraft (RF patent 2051073 C1, application 4935257/11 from 07.05.91 CL 64 25/58), comprising a housing, a rod, a piston with holes, the valve and stops.In relation to declared this shock absorber is closest to the proposed invention to the technical essence and the achieved result and adopted for the prototype.A disadvantage of the known shock absorber is low energy consumption due to the lack of damping of the slurry during forward (compression) shaft, i.e., the absence of inhibition, which leads to significant loss of intensity of the shock absorber.Another disadvantage is the low efficiency of the braking rod on the back of course, because it was not provided with sufficient tightness between the valve and reverse brake piston rod and the inner surface of the housing, and between the mating surfaces of the valve reverse brake and the bearing sleeve.The present invention eliminates these drawbacks.the piston, end seal, the valve is installed in the housing for axial movement, interaction with the piston and overlap with mechanical seal additional holes in the piston extension rod, and when the compression rod interaction with more emphasis and additional holes in the piston. Mechanical seal is made in the form of interoperable end-seal package, valve and end of the annular sealing protrusion on the piston is made between the end outputs of holes and additional holes, each of which is separately, on its circumference, the valve and the piston has a sealing packages, located on the surfaces associated with the surface of the inner wall of the casing, additional holes are located on the piston large-diameter from the outer side face of the sealing ledge. All holes on the piston is made calibrated.In Fig. 1 shows a top view of the shock absorber of Fig.2 shows the external element 1 with the location of parts in the shock absorber during the return stroke, Fig. 3 shows the external element I with the location of parts in the shock absorber when it is pravilnimi holes 6 with an external radial groove for sealing the package 7 and end with an annular sealing protrusion 8, the valve 9 with the outer radial annular groove for sealing the package 10 and the end annular groove for sealing the package 11, additional emphasis 12.In the upper part of the housing 1 is placed cavity And compressed gas, below which there is filled with the working fluid nadporshnevaya cavity B and podpornega cavity CenturyThe operation of the shock absorber is as follows.When the extension rod 2 (see Fig.2) sealing the package 7 provides a seal between the piston 4 and the inner wall of the housing 1, the piston 4 moves along the inner wall of the housing 1 and interacts with a valve 9, where the annular sealing protrusion 8 mates with end-seal the package 11 of the valve 9 and prevents the flow of fluid through the additional holes 6 of the cavity In the cavity B, and tightness between the valve 9 and the inner wall of the housing 1 is provided with sealing package 10. All this hinders the unregulated flow of the working fluid from podpornoy cavity In cavity B through additional holes 6 and technological gaps between the piston 4 and the inner wall of the housing 1. Thereby the flow of working geovanie working fluid and effective braking rod 2 when his nomination.When the compression rod 2 (see Fig.3) sealing the package 7 provides a seal between the piston 4 and the inner wall of the housing 1, the valve 9 is interacting with more emphasis 12, additional holes 6 in the piston 4 is opened, the gas in the cavity And compressed and the pressure in the absorber increases, but the rate of flow of the working fluid from the cavity B in the cavity In such a way that a pressure of the working fluid in them is not aligned, and formed a considerable excess pressure in the cavities a and B above the pressure in the cavity, due to carefully selected areas of the cross sections of additional holes 6, that allows you to create stem 2 additional resistance to its movement on the compression.Thus the introduction of damping fluid during forward (compression) shaft and improving damping fluid, ad hoc exception flows of the working fluid through technological gaps when the extension rod to increase the intensity of the shock absorber by ~15%, improve performance at the expense of stability and reliability without increasing the size and weight of the shock absorber. 1. Shock absorber, comprising a housing, a piston rod, the piston and the holes in the piston, end seal, the valve is installed in the housing for axial movement, interaction with the piston and overlap with mechanical seal additional holes in the piston extension rod, and when the compression rod interaction with more emphasis and additional holes in the piston.2. The shock absorber under item 1, characterized in that it end seal is made in the form of interoperable end-seal package, valve and end of the annular sealing protrusion on the piston is made between the end outputs of holes and additional holes, each of which is separately, on its circumference.3. The shock absorber on the PP. 1 and 2, characterized in that in it the valve and the piston has a sealing packages, located on the surface associated with the inner surface of the casing wall.4. The shock absorber on the PP. 1 and 2, characterized in that the additional holes are located at a larger diameter on the outer side face of the sealing ledge.5. The shock absorber on the PP. 1 and 2, characterized in that the holes in it on the piston is made calibrated.
FIELD: aircraft manufacture; manufacture of landing gears.
SUBSTANCE: proposed shock-absorber leg includes cylinder, rod, piston, support and working member in form of system of rods made from monocrystals compressed to solid state between piston and support; generatrix of its surface corresponds to curve of diagram of operation of hydro-pneumatic shock absorber.
EFFECT: simplified construction.
FIELD: mechanical engineering.
SUBSTANCE: hydromechanical damper comprises housing which receives pistons that are rigidly interconnected and held in the neutral position with a spring and lids with connecting pipes for connecting the above-piston spaces with hydraulic lines. The housing receives the additional sleeve covered with the lid. The sleeve receives orifice of constant flow section and adjustable orifice connected in series. The flow section of the adjustable orifice depends on the pressure drop at it. The orifices define the throttling device between the above-piston space and hydraulic line. The spring that holds the pistons in the neutral position are made of flexible members that can change the shape and volume.
EFFECT: improved damping.
FIELD: air hydraulic shock absorbers of chassis of transport facilities.
SUBSTANCE: the air hydraulic shock absorber consists of a cylinder, rod, plunger, movable and fixed axle boxes, hydraulic seals, gas and hydraulic chambers and a profiled needle. The shock absorber is equipped with an optimizing hydraulic double-stage regulator consisting of an internal bush with holes that is attached to the wall separating two spaces in the hydraulic chamber and linked with the plunger of the air hydraulic shock absorber fitted onto which is an external bush with holes with possibility of movement relative to the internal bush. Both bushes are interconnected by a multistart thread with a helix angle exceeding the friction angle, they are also connected by a flexible component. The profiled needle connected to the rod of the air hydraulic shock absorber enters the hole in the external bush of the optimizing hydraulic hydraulic double-stage regulator.
EFFECT: simplified design, provided stability of the dynamic characteristics at direct and reverse motions.
3 dwg, 1 tbl