Controlled hydraulic shock absorber
FIELD: automotive industry.
SUBSTANCE: controlled hydraulic shock absorber comprises telescopic hydraulic two-tube shock absorber. The rod of the shock absorber is made of a hollow rod provided with the flange having a groove for roller thrust bearing and vertical slots from the other side. The hollow of the rod receives the hollow rod of by-pass valve for permitting vertical movement. The top section of the rod is provided with trapezium right thread, and the bottom section is provided with the stop for the spring of the valve. The driven pinion is screwed on the threaded part of the rod of the by-pass valve. The bottom of the driven pinion abuts against the roller thrust bearing that is mounted in the groove in the flange of the hollow rod. The second driven pinion is screwed on the threaded part of the valve rod. The top side of the pinion abuts against the roller thrust bearing. The third roller thrust bearing is interposed between the driven pinions. The driven pinions engage the driving gears mounted on the shaft of the electric motor. The control unit is connected with the electric motor and receives the signal from the pickups of suspension vibration and velocity pickup.
EFFECT: improved shock absorbing.
The invention relates to the field of transport engineering.
Known design telescopic hydraulic twin-tube shock absorber, consisting of the upper head, rod, piston with throttle openings, nuts, tank, cage cuff, spring, cuff, cuff rod, drive the bypass valve spring by-pass valve, disk valve recoil plate valve spring returns, the working cylinder, the valve body compression spring, compression valve, adjusting nut, valve compression lugs and tank .
The disadvantage of the design is its inability to regulate their characteristics when driving on different types of road profile.
The technical result of the invention is to increase the smoothness, reduce the body roll of the vehicle when cornering at high speeds, reducing shock loads of the suspension when driving on bumpy roads.
The technical result of the invention is achieved in that the inventive shock absorber includes a hollow stem with a flange having a groove in the thrust roller bearing, and on the other side of the vertical slot in the cavity of the rod is placed a hollow rod by-pass valve with the possibility of vertical movement in the upper part of which is cut a trapezoidal right hand thread, and in the lower part of them which is the focus for spring by-pass valve, in the stem cavity relief valve placed on the valve stem returns, in the upper part of which is cut trapezoid left-hand thread, and at the bottom there is a stop for the valve spring returns. Thus, moving in the vertical direction up or down, these stocks will compress or decompress the spring of the respective valves. On the threaded portion of the rod by-pass valve is screwed driven gear, the bottom plane resisting the thrust roller bearing, which is located in the groove of the flange of the hollow shaft. Similarly on the threaded portion of the valve stem returns screwed another driven gear, the top plane resisting the thrust roller bearing, pressed cover, bolted with four bolts to the flange of the hollow rod. Between the driven gears posted by another bearing roller. The driven gear engages with the leading gears mounted on the shaft of the motor keyed. The motor is connected to the control unit receiving signals through the amplifier signals from sensors oscillations of the suspension and the speed sensor.
The invention is illustrated by drawings: figure 1 presents a General view of the shock absorber on the side of the incision. Figure 2 - scheme of work shock absorber with adjustable feature.
The hydraulic shock absorber with adjustable features, what risticii consists of a tank 1, the working cylinder 2, the piston of the throttle holes 3, a hollow stem with a flange 4, stock bypass valve 5, the valve stem returns 6, the spring by-pass valve 7, a plate spring by-pass valve 8, a disk-pass valve 9, valve spring return 10, a plate spring return valve 11, the valve disc recoil 12, housing compression valve 13, valve spring compression 14, compression valve 15, the adjusting nut 16, the sleeve shaft 17, the spring cuff 18, the holder of the cuff 19, the nut of the tank 20, the lugs 21, the driven gears 22, bearings thrust roller 23, the gears leading 24, motor 25, the cover 26, a control unit 27, sensors oscillations of the suspension 28, a speed sensor 29, the amplifier signals of the sensors 30.
The absorber operates as follows: When the vehicle is moving in the control unit 27 receives the signal from the sensors of vibrations of the suspension 28 and the speed sensor 29 of the vehicle, through a signal amplifier 30, the control unit 27 can process these signals, and supplies the electric signal to the electric motor 25. The electric motor 25, rotating the driven gear 22 through the wheel 24 moves the valve stems 5 and 6, thereby changing the compression force of the valve spring 7 and 10, and therefore, the throughput of the throttle openings of the piston 3 and the power of resistance of the shock absorber when the strokes of compression and rebound within wide limits.
The use of the claimed image is to be placed will increase the smoothness, to reduce the body roll of the vehicle when cornering at high speeds, to reduce the shock load of the suspension when driving on bumpy roads due to changes in characteristics of the shock absorber.
The source of information
1. Hydraulic shock absorbers of vehicles / Derborence A.D.): mechanical engineering, 1969 - 236 S.
The hydraulic shock absorber with adjustable characteristic, consisting of a telescopic hydraulic twin-tube shock absorber, characterized in that the piston rod of the shock absorber consists of a hollow rod with a flange having a groove in the thrust roller bearing, and on the other hand is vertical slits in the cavity of the rod is placed a hollow rod by-pass valve with the possibility of vertical movement in the upper part of which is cut a trapezoidal right hand thread, and in the lower part there is a stop for the spring, bypass valve, the stem cavity relief valve placed on the valve stem returns, in the upper part of which is cut trapezoid left-hand thread, and the lower section has the focus for valve spring returns the threaded portion of the rod by-pass valve is screwed driven gear, the bottom plane resisting the thrust roller bearing, which is located in the groove of the flange of the hollow shaft, in a similar manner on the threaded portion of the valve stem returns screwed the other is AI driven gear, the top plane resisting the thrust roller bearing, pressed cover, bolted with four bolts to the flange of the hollow shaft between the driven gears posted by another thrust roller bearing, driven gear engages with the leading gears mounted on the shaft of the motor keyed to the motor connected to the control unit receiving signals through the amplifier signals from sensors oscillations of the suspension and the speed sensor.
FIELD: equipment for oil and gas condensate well development and repair, particularly to increase oil recovery from oil and gas condensate reservoirs during production oil well operation by creation of deeply penetrating repressions in well bottom zone.
SUBSTANCE: hydraulic generator comprises intake pipeline with orifices for well fluid reservoir pressure supply, implosion chamber cylinder, sub connecting intake pipeline with implosion chamber cylinder, piston connected with sucker rod, working chamber including working cylinder with windows and pressure concentrators, shutoff valve having rod and shutoff valve clutch, which connects implosion chamber cylinder with working chamber and cylindrical compression spring. Working chamber has hydraulic damping means. Damping means comprises cylinder with bypass orifices, piston made as a single whole with shutoff valve rod and spring-loaded with cylindrical compression spring, and collar having rigid spring-loaded stop. The stop may cooperate with shutoff valve rod to prevent critical cylindrical compression spring deformation.
EFFECT: increased reliability of hydraulic generator operation.
2 cl, 2 dwg
FIELD: mechanical engineering; transport engineering.
SUBSTANCE: invention relates to hydraulic vibration-isolating bases used for damping vibrations created by operating power units of vehicles. Proposed vibration-isolating base has liquid-filled working and compensating chambers 1 and 8 limited by housing 7 with fitted-in dividing partition 6 provided with ring space 12 and restriction channels 4 communicating ring space 12 with said chambers 1, 8. Working chamber 1 is limited by support plate 3 with displacer 13 and elastic shell 2, and compensating chamber 8 by elastic diaphragm 9. Restriction channels 4 adjoin tangentially ring space 12 and working and compensating chambers 1, 8 Diffuser channels 5 are made in middle part of dividing partition 6 to communicate working and compensating chambers 1, 8. Peripheral part 8b of compensating chamber 8 is torous-shaped, tangentially adjoining diffuser channels 5. Dividing partition 6 is provided with axial channel 14 whose inner surface is made conical, with cut screw groove. Vertex of cone is pointed to side of support plate 3. Elastic element 15 is arranged between pan 11 and elastic diaphragm 9. Rigidity of elastic element is equal to rigidity of pneumatic spring formed by air space 10.
EFFECT: improved damping characteristics of vibration-isolating base, increased dissipation of vibration energy.
FIELD: transport engineering.
SUBSTANCE: invention relates to hydraulic shock absorber struts of vehicle suspensions, particularly, to devices providing their adjustment, stabilizing of characteristics of suspension shock absorber struts at ambient temperature fluctuations within +40°C and -40°C. Proposed hydraulic shock absorber contains hydraulic cylinder with working medium, piston and rod. Piston and rod spaces are connected by channels made in piston and additional channel made in rod. Capacity of additional channel is made adjustable depending on temperature of working medium by means of rotary bushing with hole and spring made of bimetal or material with memorized shape effect and rigidly connected by one end with rod and by other end with adjusting bushing.
EFFECT: provision of hydraulic strut of front suspension of VAZ car with constant characteristics at any temperature of ambient air which is important in winter.
FIELD: mechanical engineering.
SUBSTANCE: invention relates to devices for suppressing mechanical vibrations of rotary systems. Proposed damper has housing and main movable element installed in housing filled with damping liquid. Main movable element is made in form of solid of revolution, is furnished with additional damping element and is hinge-rested by lower part through support needle and step bearing onto elastic member. Alignment springs are secured in upper part of main movable element. Additional damping element is fitted with damping clearances in ring groove of housing, it encloses main movable element and is connected to main movable element through elastic hanger whose vertical arrangement depends on adjustment of damper in frequency.
EFFECT: increased efficiency of damping and enlarged range of frequency damping in radial direction, provision of additional damping in axial direction.
10 cl, 9 dwg
FIELD: transport engineering.
SUBSTANCE: invention relates to pneumohydraulic springs with self-adjusted hydraulic resistance depending on amplitude and direction of oscillations. Proposed pneumohydraulic spring of vehicle suspension has cylinder with piston and rod forming piston and ring spaces in cylinder, and hydraulic accumulator connected with cylinder space through valve self-adjusted in amplitude and direction of oscillations. Valve is made in form of ring piston installed in cylinder for axial displacement along valve rod. One end of valve rod is connected with support secured on end face of cylinder. Ring piston travel limiter is installed on other end of rod, forming with cylinder a ring space of valve communicating with hydraulic accumulator through holes made in support and forming additional throttling channel and communicating with piston space through main throttling channel made in ring piston and through check valve installed at one of side of ring piston. Blind axial hole is made in piston with rod into which limiter gets at end of spring compression stroke, thus forming inner space of maximum vibration damper communicating with piston space. Invention reduces dynamic loads and increases free travel of spring rod at reduced damping without increasing overall dimensions, provides asymmetrical damping characteristics at compressing and rebound strokes and increased rigidity at end of compression stroke which simplified design, improves reliability and reduces heating of spring, provides smooth running on any road with small irregularities whose probable height does not exceed travel of spring rod corrected to wheel with reduced damping.
EFFECT: reduced dynamic loads, simplified design, improved reliability of vehicle running of roads of any type.
FIELD: automobile building, aircraft and space technique, and mechanical engineering.
SUBSTANCE: method involves compressing heterogeneous system placed within enclosed volume, with heterogeneous system consisting of porous substance and liquid which does not adhere to said porous substance, by applying impact action satisfying the following inequality: p>pcr, where p is pressure buildup rate as a result of applying predetermined impact action upon heterogeneous system; pcr is critical pressure buildup rate determined as pcr=pc/τ, where pc is pressure at which percolation transition occurs, τ is time of filling cluster with non-adhering liquid, with size equal to size of granules, of accessible pores of porous substance.
EFFECT: enhanced energy absorption and dissipation of energy by impact load absorbing equipment.
FIELD: mechanical engineering.
SUBSTANCE: invention relates to hydraulic vibrosupports used for damping vibrations created by operating power units of vehicles and stationary power generating sets. Proposed hydraulic vibrosupport contains working and compensating chambers filled with damping liquid and limited by common housing with fitted-in separating partition. Said separating partition is provided with space forming intermediate chamber communicating through throttling holes with working and compensating chambers. Working chamber is limited by elastic shell, and compensating chamber, by diaphragm. Intermediate chamber accommodates flexible corrugated diaphragm with throttling holes arranged in crests of standing waves arising at action of input vibrosignal. Hydraulic vibrosupport contains also air chamber formed by diaphragm and pan. Intermediate chamber accommodates also at least one diaphragm. Corrugations of each diaphragm are located in crests of standing walls arising at action of input vibrosignal. Summary area of throttling holes of each diaphragm is equal to summary area of throttling holes of upper or lower part of separating partition. Moreover, central holes in separating partition are of diameter greater than peripheral holes, and throttling holes in upper part of separating partition are made tangentially to inner surface of elastic shell, and throttling holes in lower part of separating partition are made tangentially to inner surface of diaphragm.
EFFECT: improved damping characteristics over entire frequency range.
2 cl, 3 dwg
FIELD: oil and gas-condensate well repair and development.
SUBSTANCE: device comprises intake pipeline with orifices for well fluid reservoir pressure supply; implosion chamber cylinder, sub connecting intake pipeline with implosion chamber cylinder, piston connected to rod, implosion chamber cylinder, clutch and working chamber. Working chamber has working cylinder with windows and pressure concentrator, as well as shutoff valve, rod, cylindrical compression spring and rigid thrust and shutoff valve clutch, which connects implosion chamber cylinder with working chamber. Working chamber has hydraulic damping means having cylinder and piston sliding with respect to the rod. The rod has annular rim made as a single whole with the rod and may cooperate with sliding piston after working cylinder window opening to absorb axial hydraulic impact content energy. As impact wave passes cylindrical spring may be compressed to non-critical state.
EFFECT: increased oil recovery from oil and gas-condensate reservoirs during oil production well operation by creation of deep repressions in well bottom zone with the use of implosion chamber connected to production string and lowered in well with hydrostatic reservoir pressure and working medium, namely contaminated mix including oil and reservoir water or oil and gas condensate, increased operational reliability of pressure generator.
2 cl, 2 dwg
FIELD: mechanical engineering.
SUBSTANCE: hydraulic damper contains cylinder with hollow rod and piston provided with L-shaped channels. Piston is rigidly secured on hollow rod. Two semispherical diaphragms are installed in overpiston zone inside hollow rod, one of which is solid and the other is provided with axial through hole. Spherical solid of revolution is installed for movement in space between diaphragms. Said spherical solid of revolution has round flay in horizontal equatorial area and vertical axial through channel. Channels tilted to longitudinal axis of symmetry are made in walls of hollow rod in space between diaphragms.
EFFECT: simplified design, improved efficiency of operation of hydraulic damper.
2 cl, 4 dwg
FIELD: transport mechanical engineering.
SUBSTANCE: shock absorber can be used as hydraulic telescopic shock absorber for transportation vehicles, mainly for rail rolling stock. Non-differential-type shock absorber has reservoir, cylinder with bottom, which is mounted coaxially inside the reservoir to form recuperative cavity. Cylinder has damper and back and safety valves. Piston, provided with damper and compression and straining strokes safety valves, is disposed in cylinder; the damper is mounted onto recess of rod and it is connected with thread. There is also guide with opening for letting rod pass. The guide closes cylinder and reservoir. Shock absorber is provided with compression and straining stokes overflow valves which valves have static characteristics corresponding to inclination of operational characteristic of shock absorber to kink point. Onto cylindrical surface of piston at its both ends there are pairs of opposite flats, which are opened at ends of piston; pair of through holes is made in perpendicular to plane of flats. One pair goes through spring cavities of overflow and safety valves of straining stroke, and the other one goes through spring cavities of overflow and safety valves of compression stroke.
EFFECT: improved reliability of operation.
3 cl, 4 dwg
FIELD: mechanical engineering.
SUBSTANCE: 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.
EFFECT: expanded functional capabilities.
FIELD: hydraulic shock absorbers.
SUBSTANCE: 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.
EFFECT: enlarged manufacturing possibilities, improved efficiency of shock absorber.
FIELD: transport machine engineering, namely shock absorbing apparatuses.
SUBSTANCE: 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.
EFFECT: possibility for setting rigidity factor of shock absorbing apparatus depending upon technological demands.
2 cl, 2 dwg
FIELD: mechanical engineering.
SUBSTANCE: 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.
EFFECT: simplified manufacturing, reduced cost and enhanced reliability.
FIELD: transport engineering; suspensions of vehicles.
SUBSTANCE: 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.
EFFECT: improved reliability and sensitivity of shock absorber.
FIELD: transport engineering; vehicle suspensions.
SUBSTANCE: 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.
EFFECT: improved reliability and sensitivity of shock absorber.
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
FIELD: machine building, applicable for suppression of vibrations of various objects.
SUBSTANCE: the hydraulic vibration support has a body filled with fluid with foundations movable in axial direction, with a cylindrical damping member installed between them spring-loaded from two sides by shaped coil springs. The damping member is furnished with blades fastened on the side surface. Each shaped coil spring is made of tapered and cylindrical parts. The springs positioned on both sides from the damping member are coiled to opposite sides and rigidly fastened to the latter by their cylindrical components with the aid of screw stoppers screwed on the ends of the damping member.
EFFECT: enhanced intensity of energy dissipation.
FIELD: mechanical engineering.
SUBSTANCE: vibration insulation support comprises base and platform with stops and rubber members interposed between the base and platform with a spacing equal to that between the stops for permitting co-operation with their stops. Each rubber member is made of interconnected rubber segments to define a cylinder. The inner spaces of the rubber segments is filled with fluid.
EFFECT: improved vibration insulation.
6 cl, 1 dwg
FIELD: railway transport.
SUBSTANCE: air-operated spring comprises cylinder that receives piston with rod. The cylinder is made of air-operated cylinder whose above-piston air space is in communication with the additional tank through the throttle passage which receives self-adjustable throttle member for permitting movements inside it. The self-adjustable throttle member is made of two trancated cones whose greater bases face each other. The spring is also provided with oil tank whose top air space is in communication with the additional tank through the tube with the reducing valve. The bottom oil space of the oil tank is connected with the connecting pipe on the bottom outer end of the rod through the flexible hose. The additional tank is provided with the electric heating member mounted inside the space and heat insulated from the ambient.
EFFECT: enhanced reliability.
3 cl, 3 dwg