Air hydraulic shock absorber |
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IPC classes for russian patent Air hydraulic shock absorber (RU 2261381):
        
 Gas damper / 2244180
Damper has housing (1) provided with working cylinder (5), which receives rod (8) and piston (7). Working cylinder (5) and bearing (9) are locked against axial movement. Nut (13) is provided with gasket (16). The housing is covered with lid (21).
 The absorber "charges"(options) and electro-pneumatic system of the vehicle" / 2241154
The invention relates to shock absorbers with adjustable stiffness in automatic mode or by the will of the operator and can be used in road, rail, air and other vehicles
 The shock absorber / 2234015
The invention relates to a device vibration protection technology and can be used in transport machinery to protect human operator from broadband random kinematic perturbations
 A pneumatic damper / 2230953
The invention relates to the field of engineering and relates to devices for damping of mechanical vibrations
 The shock absorber of a suspension (two options) / 2226157
The invention relates to the automotive industry, namely suspensions hire
 Suspension of the vehicle / 2217323
The invention relates to the automotive industry, namely, devices for depreciation on vehicles
 Hydropneumatic damper / 2216665
The invention relates to transport machinery and can be used for damping mechanical vibrations
 The damper smoothing pneumohydraulic / 2215926
The invention relates to the field of protection measuring equipment (gauges, recording equipment and automation systems from vibrations and shock waves produced when the hydraulic system type pump equipment - pipeline
 Shock absorber sea-based ballistic missile / 2199082
The invention relates to marine missile armament
 Adaptive pneumatic damper / 2190133
The invention relates to transport machinery and relates to devices for damping mechanical oscillations, especially obressorennyh parts of vehicles, in particular the vertical and horizontal oscillations of the bogie frames and bodies of diesel locomotives, electric locomotives, passenger cars, electric trains and track machines
 Single-tube shock absorber / 2253575
Proposed single-tube shock absorber has housing with hydraulic space filled with working fluid, guide bushing, rod and piston fixed on rod and dividing hydraulic space into upper and power parts. Flexible compensator made of microcellular material is installed in lower part of hydraulic space. Constant head of compensator realized owing to elasticity of compensator or its constant power action onto working fluid in hydraulic space are set in process of assembling of shock absorber. Volume of compensator is reduced by value equal to increase of volume of part of rod in hydraulic space of shock absorber.
 Single-tube shock absorber / 2253574
Proposed single-tube shock absorber contains housing with hydraulic space filled with working fluid, guide bushing, rod and piston stationary installed on rod and dividing hydraulic space into upper and lower parts. Hollow compensator made of elastic material is installed in lower part of hydraulic space. Constant head of compensator is realized owing to elasticity of compensator, or its constant force action onto working fluid in hydraulic space are preset in process of assembling of shock absorber. Volume of compensator is reduced by value equal to increase of volume of part of rod located in hydraulic space of shock absorber.
 Hydraulic vibration insulation support / 2253059
Hydraulic vibration insulation support comprises flexible pressure-tight chamber which is filled with damping fluid and separated into spaces interconnected through throttling ports. The pressure-tight chamber is made of a central disk-shaped space provided with an area for setting an object to be insulated and peripheral ring spaces oriented concentrically with respect to the central space and connected with it through the radial passage from one side of the central space. The throttling ports are made in pair from the opposite sides of the radial passage at the site of its intersection with each ring space. The throttling ports are provided with valves which allow the fluid to flow in opposite directions from the side of the radial passage for each of the pair of the throttling ports.
 Shock-absorbing apparatus / 2249735
Shock absorbing apparatus includes housing, rod, piston, secured to rod end and cylinder arranged between housing and piston. There are flow-through valves in cylinder; said valves are in the form of two openings mutually communicated by means of trough. Piston may move along the whole height of cylinder for operation of several flow-through valves. Change of summed diameters of said openings provides variable rigidity factor of shock-absorbing apparatus.
 Viscous-friction type shock absorber / 2249734
Viscous friction damper includes housing, partition with openings and rod passing through central opening of partition. Two similar corrugations of elastic material are fastened in housing; central partition is clamped between said corrugations. The last define two different-volume and variable-dimension cavities filled with shock absorbing liquid. Rod has two sites for fluid-tight securing of it to said two corrugations. Openings of partition through which shock-absorbing liquid is pressed are covered by means of flexible membrane providing possibility for controlling their number and size.
 Hydraulic damper / 2247269
Hydraulic damper comprises piston provided with axial passages and working cylinder filled with fluid. The piston is connected with the rod. The inner side of the cylinder and outer side of the cylinder, which is in a contact with the piston side, are provided with thread. The piston is mounted on the rod for permitting rotation around the rod. The piston is provided with radial passages whose longitudinal axes intersect with the longitudinal axes of the axial passages of the piston. The diameters of the axial passages decrease from the longitudinal axis of symmetry of the piston to its periphery. The radial passages receive movable spring-loaded slide valves whose diameters exceed these of axial passages of the piston.
 The damper of the suspension of the vehicle / 2235233
The invention relates to the building, namely the structural elements of the damper
 Hydraulic damper / 2230241
The invention relates to mechanical engineering and can be used in the construction of various transport equipment
 Hydraulic bearing suspension of the power unit of the vehicle / 2229636
The invention relates to the transport industry, in particular for hydraulic structures supports the suspension of the power unit of the vehicle
 Hydromechanical damper / 2258848
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.
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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
The invention relates to a pneumatic struts chassis vehicles, in particular boarding devices airplanes and helicopters. Known pneumatic shock absorbers are the cylinder, the plunger, the plunger with the piston, the gas and the hydraulic chamber, the movable and stationary axle boxes with hydraulic seals, openings for flow of fluid, the profiled needle (PI), the valve-reverse, anti-g ground valve (ha) forward stroke, aneroid devices, relief valves (see, for example, A.S. No. 473642 from 19.07.73, patent RU 2043946 from 12.08.92, patent SU 1190112 from 21.11.83, patent RU 2020320 from 29.12.90). The disadvantages of these absorbers are the design complexity and the inability to provide a wide range of viscosities (or temperature) of the fluid in the shock absorber at the same time the stability of such dynamic characteristics as the maximum axial load on the shock absorber and the total direct and reverse. This is due to the fact that the strong temperature decreases the viscosity of the liquid increases many times, at low temperatures (-50 -60...° (C) significantly increases the power of the hydraulic resistance inside the absorber and significantly change the dynamic characteristics of the shock absorber, which causes, firstly, the occurrence of unacceptably large dinamicas the x loads on the structure and secondly, leads to a large change of the total time backward and forward movement of the shock absorber. The change (decrease) the viscosity of the liquid can also occur due to foaming of the liquid during several successive cycles of compression-wound shock absorber, which leads to a change in the characteristics of the shock absorber. As a prototype of the selected elastic damper (see patent RU 2156899 priority from 01.07.99), having a housing, a gas and a liquid chamber, a plunger shaped spindle, a floating piston diaphragm with holes, non-return valve. The disadvantages of this damper are the complexity of the design and the fact that it does not provide a wide range of viscosities of liquid in the absorber at the same time the stability of the dynamic characteristics in forward and reverse course. To address these shortcomings, we offer pneumatic shock absorber (shock absorber) is equipped optimizing hydraulic double-acting regulator (GRD), installed in the hydraulic chamber. Figure 1 is a schematic diagram of the proposed absorber, figure 2 is a longitudinal section of optimizing the hydraulic control double-acting, and figure 3 - cut sleeves GRD in its three operating positions. The absorber consists of a cylinder 1, a piston 2, piston 3, the concentration in the OI pan 4, fixed axle box 5, gas 6 and 7 hydraulic chambers of hydraulic seals 8, profiled needle 9 and optimizing hydraulic double-acting regulator (GND) 18 consisting of the inner sleeve 10 with holes 11, fixedly mounted on the wall 16 of the plunger 3, the separating cavity "b" and "B" in the hydraulic chamber. The sleeve 10 in running landing to rotate around and move along its axis wearing outer sleeve 12 with openings 14. Sleeve 10 and 12 are connected in multiple threads 13 with angle turns more friction angle, the orifices 11 of the sleeve 10 relative to the side of the hole 14 of the sleeve 12 is shifted counterclockwise by angle α1and regarding the other part of the holes 14 clockwise angle α2. The ends of the sleeves 10 and 12 are connected in multiple by a spring 15. Holes 11 of the sleeve 10 and the holes 14 of the sleeve 12 have different cross sections and location around the circumference and along the axis of the sleeves. Square holes are designed so that when the mutual rotation and axial movement of the sleeves 10 and 12 matching holes 11 and 14 for fluid in forward and reverse motion of the shock absorber corresponds to two different laws, changes in the area of through-holes for fluid from the magnitude and direction of the angle of rotation and axial movement of the sleeve 12. The needle 9 is fixed on the shaft 2 and is GNC the ri holes 17 of the sleeve 12 with a gap. The operation of the shock absorber is as follows. The first mode is a direct stroke of the shock absorber. During compression (contraction) of the shock absorber when the reciprocal movement along the axis of the shock absorber of the needle 9 and the sleeve 12 changing the area of the through-holes for fluid between the needle 9 and the wall of the bore 17 depending on the progress of the shock absorber. Certain pre dependence of the square of these through-holes allows regulation of hydraulic forces depending on the progress of the shock absorber. When the compression of the shock absorber due to the resistance flowing through the openings 11 and 14 of the liquid there is a pressure difference P1(in the cavity "B") and R2(in the cavity "B") hydraulic chamber. At pressure P1more pressure P2creates a force along the axis of the sleeve 12. The result of this force on the threaded connection 13 of the sleeves 10 and 12 produces a torque that rotates the sleeve 12, for example, clockwise. The specified torque is balanced by the torque from the spring 15. Holes 14 are partially align with the holes 11 and the fluid from the cavity "B" flows into the cavity "B". This changes the size of through-holes for flow of fluid when changing differential pressures in cavities "a" and "B". Certain pre-dependency matching square hole from the corner turning parts, all specifications is a and the axial movement of the sleeve 12 allows the regulation of the hydraulic force depending on the pressure drop in the hydraulic chamber. The second mode is the reverse stroke of the shock absorber. This mode is resgate (increase in length) of the shock absorber. At pressure P1less pressure P2there is a force directed along the axis of the sleeves 10 and 12 down. This leads to rotation of the sleeve 12 in the opposite (unlike the forward stroke of the shock absorber) direction, such as counterclockwise. The holes 14 of the sleeve 12 "open up" holes 11 of the sleeve 10 and the fluid flows from the cavity "B" cavity "In". While acting on the sleeve 12 power changes in accordance with the pressure difference P1and R2and provides the necessary area of the through-holes for fluid on the back of the course to ensure optimal values of total time of direct and reverse t∑ in a wide range of viscosities of liquid in the absorber. You can change the square holes for flow of fluid from the stroke of the shock absorber with a needle and changes in the area of the extra holes from the pressure drop in the hydraulic chamber using HRD provides the necessary optimal change of the total area of throttling holes on both the direct and reverse motion of the shock absorber. This allows you greatly reduce the effect of viscosity of the fluid in the shock absorber on the dynamic characteristics of the damper. The result p is obedennyh numerical studies of the landing aircraft impact, having telescopic rack chassis with different absorbers obtained comparative results of the calculation (see table) for the landing gear with shock absorbers that have: (a) permanent openings for fluid (Const); b) a profiled needle (PI); C) ground valve (ha) and d) optimizing the hydraulic double-acting regulator (GRD). The results correspond to temperatures of +60°C, +20°and -60°and With different values of the viscosity of the fluid in the hydraulic chamber and the charging pressure in the gas chamber. As can be seen from the table, the proposed design provides the greatest stability of such important characteristics of the shock absorber, as the maximum bearing load Rumaxand the total direct and reverse t∑. The change in the value Rumaxwhen the temperature changes from +60°C to -60°is only 0.88% unlike other options the design of the absorber (9.54, 23.27 and 29.12%).
A pneumatic shock absorber comprising a cylinder, a piston, plunger, movable and immovable Buchs, hydraulic seals, gas and hydraulic chambers, the profiled needle, characterized in that it includes optimizing hydraulic double-acting regulator, consisting of inner sleeve with holes, which natvig what about mounted on the wall, separating the two cavities in the hydraulic chamber and connected with the plunger of a pneumatic-hydraulic shock absorber connected to the cylinder pneumatic-hydraulic shock absorber, which is dressed with the ability to move relative to the inner sleeve outer sleeve with holes, and both sleeves are interconnected multiple threads with the angle of gradient coils more friction angle and they are connected also by the elastic element and the profiled needle, connected with the rod pneumatic-hydraulic shock absorber, enters the hole in the outer sleeve optimizing the hydraulic control double-acting.
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