CN102748422A - Stroke sensitive damping adjustable shock absorber - Google Patents

Stroke sensitive damping adjustable shock absorber Download PDF

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Publication number
CN102748422A
CN102748422A CN2012102296735A CN201210229673A CN102748422A CN 102748422 A CN102748422 A CN 102748422A CN 2012102296735 A CN2012102296735 A CN 2012102296735A CN 201210229673 A CN201210229673 A CN 201210229673A CN 102748422 A CN102748422 A CN 102748422A
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China
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piston
compression
stretching
bypass valve
valve
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CN2012102296735A
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CN102748422B (en
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韩佐悦
李静
程超
曹振
黄剑锋
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Jilin University
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Jilin University
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Abstract

The invention discloses a stroke sensitive damping adjustable shock absorber, which consists of a telescopic shock absorber and a parallel bypass valve. The parallel bypass valve comprises a tensile check valve fixing bolt, a tensile check valve block, a bypass floating piston, a floating piston ring, a compression check valve block, a compression bypass valve train and a tensile bypass valve train, wherein the tensile check valve block is arranged on the hole of the tensile check valve fixing bolt through the tensile check valve fixing bolt; the compression check valve block is arranged on the hole of the compression check valve fixing bolt through the compression check valve fixing bolt; the compression bypass valve train is connected with a compression bypass valve hole in the bypass valve body; the tensile bypass valve train is connected with the tensile bypass valve hole in the bypass valve body; the bypass valve floating piston is arranged in the bypass valve piston cavity between the compression bypass valve train and the tensile bypass valve train in a sliding connection way; and the floating piston ring is arranged in a fixed groove of the floating piston ring of the bypass valve floating piston. The parallel bypass valve is fixedly connected with the lower end of the telescopic shock absorber.

Description

The responsive ride control shock absorber of stroke
Technical field
The present invention relates to a kind of Adjustable Damping mechanical vibration reducing device that is applied on the automobile, more particularly, the present invention relates to a kind of stroke sensitivity ride control shock absorber responsive that is applied on the automotive suspension stroke.
Background technique
The suspension system of vehicle is responsible for relaxing road shocks and decay body vibrations, and suspension generally partly is made up of guide mechanism, elastic element, vibration damper etc.Wherein vibration damper is responsible for consuming vibrational energy, the attenuation vibration amplitude.For the mechanical vibration reducing device; When vehicle runs into Uneven road; Suspension moves up and down, the to-and-fro motion in piston cylinder of the piston of vibration damper, and the flow of liquid in each chamber is crossed valve system and the normal open hole in the vibration damper; Because the throttling action of the viscosity of liquid and aperture produces damping force, the energy of the friction dissipates vibration through liquid.Because orifice restriction is all relevant with speed with the power that fluid viscosity produces, so the damping of vibration damper is directly related with the movement velocity of piston, promptly so-called speed sensitive.
The motion that relates to suspension of vehicle has the smoothness motion when crossing uneven road surface, the inclination campaign when turning to is arranged, pitching movement when acceleration and braking are arranged or the like.Under different forms of motion; The passenger is different to the demand of travelling comfort; Requirement to the resistance of shock absorber characteristic is also different: when vehicle carried out the smoothness motion, the road surface input belonged to the vibration of little amplitude and high frequency rate, and the factor that mainly influence occupant's travelling comfort sensation this moment is the acceleration magnitude of Vehicular vibration; In order to satisfy occupant's travelling comfort, at this moment required resistance of shock absorber coefficient is less; And when Vehicular turn, the road surface input belongs to the low-frequency vibration of large amplitude, and the factor that influences occupant's travelling comfort sensation this moment is a vehicle roll angle, and in order to satisfy occupant's travelling comfort, at this moment required resistance of shock absorber coefficient is bigger; Vehicle quickens in the braking process, and the road surface input belongs to the low-frequency vibration of large amplitude, and the factor that influences occupant's travelling comfort sensation this moment is the vehicle body pitching angle, and for satisfying occupant's travelling comfort, at this moment required resistance of shock absorber coefficient is bigger.
The movement velocity of damper piston depends on the amplitude and the frequency of vibration simultaneously, and under the same frequency, vibration amplitude is big more, and velocity of piston is fast more; Under the same-amplitude, frequency is high more, and velocity of piston is fast more.Vehicle is the not obviously difference of piston movement speed when quickening skid steer when smoothness moves, so use the vibration damper of a responsive to speed to be difficult to satisfy vehicle to the resistance of shock absorber requirement under each operating mode.For reaching requirement, should make vibration damper responsive to the stroke of piston.
The responsive vibration damper of stroke some researchs have been carried out both at home and abroad.Through the patent document retrieval, for example, Chinese patent notification number 102032308A; Day for announcing 2011.04.27, application number 201010552262.0, applying date 2010.11.19; Claimant University Of Chongqing, name is called " variable-damping shock ", the described vibration damper of this application technological scheme; Through on vibration damper working steel tube wall, being drilled with the circular hole of some, piston being produced and other positions damping force inequality through near the time circular hole, thereby realize the sensitivity of the stroke of resistance of shock absorber.But the size of damping force depends on the absolute position of piston in clutch release slave cylinder in this scheme; When car load changes (particularly for commercial car); When the suspension equilibrium position changed, the damping characteristic of this vibration damper will great changes will take place, even produce very adverse influence.
Summary of the invention
Technical problem to be solved by this invention is to have overcome existing technology to exist the size of damping force to depend on the problem of the absolute position of piston in clutch release slave cylinder, provides a kind of stroke responsive ride control shock absorber.
For solving the problems of the technologies described above, the present invention adopts following technological scheme to realize: the responsive ride control shock absorber of described stroke is made up of with parallelly connected bypass valve telescopic shock absorber.Described parallelly connected bypass valve comprises stretching one-way valve fixing bolt, stretching check valve sheet, by-pass valve body, bypass valve floating piston, floating piston ring, compression check valve sheet, compression one-way valve fixing bolt, compression bypass valve system and stretching bypass valve system.
The stretching check valve sheet adopts stretching one-way valve fixing bolt to be installed on the stretching one-way valve fixed bolt hole that is positioned at 4 bypass valve stretching travel ostium neutral positions, and the left side of the unidirectional valve pocket of stretching in stretching check valve sheet and the by-pass valve body contacts and is connected.The compression check valve sheet adopts compression one-way valve fixing bolt to be installed on the compression one-way valve fixed bolt hole that is positioned at 4 bypass valve compression stroke ostium neutral positions, and the left side of the unidirectional valve pocket of compression in compression check valve sheet and the by-pass valve body contacts and is connected.Compression bypass valve system is connected with the compression bypass valve opening of upper end, by pass vavle piston chamber in the by-pass valve body through screw thread; Stretching bypass valve system is connected with the stretching bypass valve opening of lower end, by pass vavle piston chamber in the by-pass valve body through screw thread; The bypass valve floating piston is installed in the by pass vavle piston chamber between compression bypass valve system and the stretching bypass valve system to being slidingly connected; The floating piston ring is installed in the floating piston ring fixed groove on the bypass valve floating piston, the rotational axis conllinear in compression bypass valve system, stretching bypass valve system, floating piston and by pass vavle piston chamber.
By-pass valve body described in the technological scheme is the housing class formation spare that the cuboid by the cylindrical body in left side and right side links into an integrated entity.Be processed with coaxial ladder hole from top to bottom on the cylindrical central axis in left side; First sector hole is the middle cylinder hole; And formed the dome ring body between the inner cylindrical surface in the external cylindrical surface of middle cylinder hole coaxial line and middle cylinder hole; Second section is the piston cylinder lumen pore, and the 3rd and the 5th sector hole is called as upper piston cylinder hole and lower piston cylinder hole, and upper piston cylinder hole is identical with lower piston cylinder bore dia; The 4th sector hole is called as compression piston cylinder lumen pore; The 6th sector hole is for being communicated with lumen pore with compression stroke oil storage cylinder that piston cylinder forms down the oil storage cylinder communicated cavity, the 7th sector hole be called be used to locate under the vibration damper fixing ear assembly on fixing earhole, the 8th sector hole is called and is used to connect under the vibration damper the fixedly following fixedly earhole of ear assembly.Be processed with the by pass vavle piston chamber parallel in the cuboid of by-pass valve body right side with the left circles column axis; By pass vavle piston chamber intermediate section is the minimum columniform floating piston lumen pore of diameter; The upper end of floating piston lumen pore is connected with and is used for and last interior threaded hole that compression bypass valve system is connected; The lower end of floating piston lumen pore is connected with and is used for the following interior threaded hole that is connected with stretching bypass valve system; The arranged outside of the last interior threaded hole of floating piston lumen pore upper end has compression bypass valve opening, and the arranged outside of the following interior threaded hole of floating piston lumen pore lower end has stretching bypass valve opening.Be processed with a series of holes between floating piston lumen pore in the by pass vavle piston chamber and the left circles cylinder endoporus from top to bottom: between floating piston lumen pore and piston cylinder lumen pore, be provided with the bypass valve compression stroke oil outlet that is communicated with both; The right-hand member of bypass valve compression stroke oil outlet below is processed with the unidirectional valve pocket that stretches; The stretch left side of unidirectional valve pocket is provided with the stretching one-way valve fixed bolt hole of coaxial line, is to be uniformly distributed with 4 bypass valve stretching travel ostiums that the piston cylinder lumen pore is connected with the unidirectional valve pocket of stretching that structure is identical on the circumference at center with its axis promptly around the stretching one-way valve fixed bolt hole.Be provided with the bypass valve stretching travel oil outlet that is communicated with both between the lower end of floating piston lumen pore and the bypass valve compression stroke communicated cavity; The right-hand member of bypass valve stretching travel oil outlet top is processed with the unidirectional valve pocket of compression; Compress unidirectional valve pocket left side and be provided with coaxial compression one-way valve fixed bolt hole, around the compression one-way valve fixed bolt hole promptly with its axis be uniformly distributed with on the circumference at center 4 structures identical with bypass valve compression stroke communicated cavity with compress the bypass valve compression stroke ostiums that unidirectional valve pocket is connected.
Compression bypass valve system described in the technological scheme comprises compression piston tappet, compression stroke spring fixed seat, compression stroke low speed valve body, compression stroke spring, pressure spring fixed base seal ring, compression low speed valve body sealing ring and compression tappet seal ring.Compression stroke low speed valve body is installed among the compression bypass valve opening on the by-pass valve body to being threaded; Compression low speed valve body sealing ring is installed between the two; The compression stroke spring fixed seat is installed among the compression stroke low speed valve body to being threaded; Pressure spring fixed base seal ring is installed between the two; The lower end of compression stroke spring fixed seat is equipped with the compression stroke spring, and the compression piston tappet is installed among the compression stroke spring fixed seat to being threaded, and compression tappet seal ring is installed between the two.
Compression bypass valve system described in the technological scheme is identical with stretching bypass valve architecture.Described stretching bypass valve is to comprise stretching travel spring, stretching travel piston tappet, stretching travel spring fixed seat, stretching travel low speed valve body, stretching low speed valve body sealing ring, extension spring fixed base seal ring and stretching tappet seal ring.Stretching travel low speed valve body is installed among the stretching bypass valve opening on the by-pass valve body to being threaded; Stretching low speed valve body sealing ring is installed between the two; The upper end of stretching travel spring fixed seat is installed among the stretching travel low speed valve body to being threaded; Extension spring fixed base seal ring is installed between the two; The upper end of stretching travel spring fixed seat is equipped with the stretching travel spring, and stretching travel piston tappet is installed among the stretching travel spring fixed seat to being threaded, and stretching tappet seal ring is installed between the two.
Compression piston tappet described in the technological scheme is the identical bar class formation spare of structure with stretching travel piston tappet; The left end of compression piston tappet is processed with columniform tappet push rod; The right-hand member of tappet push rod is connected with the screw rod that is processed with the tappet screw thread; The right side that is processed with the screw rod of tappet screw thread is processed with the tappet limited ring; The right side of tappet limited ring is processed with tappet seal ring fixed groove, and the right side of tappet seal ring fixed groove is provided with the tappet spanner, and tappet spanner right-hand member is processed with the tappet U-groove bevel.
Compression stroke spring fixed seat described in the technological scheme is the identical cylinder class formation spare of structure with the stretching travel spring fixed seat; The left end of compression stroke spring fixed seat is the cylindrical body that play the guiding role; Cylindrical right-hand member is connected with the threaded circular cylinder that is processed with the spring fixed seat screw thread; The low order end of compression stroke spring fixed seat is processed with the spring fixed seat spanner of hexagon, is processed with on threaded circular cylinder and the cylndrical surface between the spring fixed seat spanner of spring fixed seat screw thread and is processed with the spring fixed seat seal ring fixed groove that is used for fixing extension spring fixed base seal ring.Compression stroke spring fixed seat left end cylindrical body center is processed with the spring lock chamber; The spring lock chamber is made up of the arc-shaped slot of an interior cylindrical hole and diameter mounting spring bigger than cylindrical hole; The right-hand member of spring lock chamber is connected with coaxial piston tappet pilot hole; The right-hand member of piston tappet pilot hole is connected with interior threaded hole, and the right-hand member of interior threaded hole is connected with piston tappet closed hole.
Compression stroke low speed valve body described in the technological scheme is the identical cylinder of a structure class formation spare with stretching travel low speed valve body; Compression stroke low speed valve body be processed with the low speed valve rod bottom; Low speed valve rod upper end is connected with the cylindrical body that is processed with low speed valve body screw thread; The top of compression stroke low speed valve body is processed with the low speed valve body spanner of hexagon, is processed with on cylindrical body and the cylndrical surface between the low speed valve body spanner of low speed valve body screw thread and is processed with the low speed valve body sealing ring fixed groove that is used for fixing compression low speed valve body sealing ring.The center of compression stroke low speed valve body lower end is processed with the spring fixed seat pilot hole vertically, and the upper end of spring fixed seat pilot hole is connected with interior threaded hole, and the upper end of interior threaded hole is processed with the spring fixed seat closed hole.
Telescopic shock absorber described in the technological scheme comprises under former damper piston up stroke limiting stopper, middle cylinder retaining ring, former damper piston assembly, oil storage cylinder, middle cylinder, piston cylinder, piston cylinder bottom valve assembly and the vibration damper fixedly ear assembly.Former damper piston up stroke limiting stopper is sleeved in the former damper piston assembly to become to be slidingly matched on the piston rod; Former damper piston up stroke limiting stopper is connected with the upper-end surface and the inner cylindrical surface contact of oil storage cylinder upper end inner chamber; The intermediate section of former damper piston up stroke limiting stopper and the central through bore Spielpassung of middle cylinder retaining ring; The lower end of middle cylinder retaining ring is inserted and is become contact to connect in the endoporus on the middle cylinder that is positioned at the oil storage cylinder inner chamber; The lower end of former damper piston up stroke limiting stopper is inserted and is become contact to connect in the endoporus on the piston cylinder that is positioned at the middle cylinder inner chamber; The piston body in the former damper piston assembly and the endoporus of piston cylinder are slidingly connected; Become transition fit in the upper piston cylinder hole that by-pass valve body is inserted in the lower end of piston cylinder and the lower piston cylinder hole; The lower end of oil storage cylinder is sleeved on the dome ring body of by-pass valve body upper end; The lower end of middle cylinder is inserted and is become transition fit to connect in the middle cylinder hole on the by-pass valve body; The external cylindrical surface of piston cylinder bottom valve body in piston cylinder bottom valve assembly upper end is connected with the contact of piston cylinder lower end endoporus, under the vibration damper fixedly the following fixedly earhole of the upper end of the oil storage cylinder lower end cap of ear assembly through wherein and by-pass valve body lower end be equipped with and the employing welding manner is fixed the fixing rotational axis conllinear of the oil storage cylinder lower end cap in the ear assembly under former damper piston up stroke limiting stopper, oil storage cylinder, middle cylinder retaining ring, middle cylinder, piston cylinder, former damper piston assembly, piston cylinder bottom valve assembly and the vibration damper.
Compared with prior art the invention has the beneficial effects as follows:
1. the responsive ride control shock absorber of stroke of the present invention can be under the low speed operating mode, when being implemented in little stroke with big stroke motion different damping characteristics is provided, and has nothing to do with the damper piston equilibrium position.
2. the damping characteristic when the responsive ride control shock absorber of stroke of the present invention can be realized little stroke motion under the low speed is regulated, and can the little stroke of free adjustment and the boundary position of big stroke operation point and the damping characteristic at big or small stroke transitional region place.Conveniently obtain the vibration damper stroke sensitivity characteristic wanted.
3. the responsive ride control shock absorber of stroke of the present invention is continued to use important spare parts such as piston assembly, piston cylinder bottom valve in the former commercial car vibration damper is total, oil storage cylinder; And on former vibration damper, add structures such as middle cylinder and bypass valve system; Boundary dimension changes very little and mounting type is constant; Little to former vibration damper change amount, cost is lower, is easy to realize.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is that the structure of the responsive ride control shock absorber of stroke of the present invention is formed the whole-cutaway view on the plan view;
Fig. 2 is the whole-cutaway view on the compression bypass valve owner view in the responsive ride control shock absorber of stroke of the present invention;
Fig. 3 is the whole-cutaway view on the stretching bypass valve owner view in the responsive ride control shock absorber of stroke of the present invention;
Fig. 4 is the whole-cutaway view on the damper piston up stroke limiting stopper plan view of the responsive ride control shock absorber of stroke of the present invention Central Plains;
Fig. 5 is the whole-cutaway view on the middle cylinder retaining ring plan view of the responsive ride control shock absorber of stroke of the present invention;
Fig. 6 is the whole-cutaway view on the damper piston assembly plan view of the responsive ride control shock absorber of stroke of the present invention Central Plains;
Fig. 7 is the whole-cutaway view on the oil storage cylinder plan view in the responsive ride control shock absorber of stroke of the present invention;
Fig. 8 is the whole-cutaway view on the middle cylinder plan view in the responsive ride control shock absorber of stroke of the present invention;
Fig. 9 is the whole-cutaway view on the piston cylinder plan view in the responsive ride control shock absorber of stroke of the present invention;
Figure 10 is the plan view of compression piston tappet and stretching travel piston tappet in the responsive ride control shock absorber of stroke of the present invention;
Figure 11 is the whole-cutaway view on compression stroke spring fixed seat and the stretching travel spring fixed seat plan view in the responsive ride control shock absorber of stroke of the present invention;
Figure 12 is the whole-cutaway view on compression stroke low speed valve body and the stretching travel low speed valve body plan view in the responsive ride control shock absorber of stroke of the present invention;
Figure 13-a is the whole-cutaway view on the by-pass valve body plan view in the responsive ride control shock absorber of stroke of the present invention;
Figure 13-b is the plan view of by-pass valve body in the responsive ride control shock absorber of stroke of the present invention;
Figure 14 is the whole-cutaway view on the bypass valve floating piston plan view in the responsive ride control shock absorber of stroke of the present invention;
Figure 15 is the whole-cutaway view on the piston cylinder bottom valve assembly plan view in the responsive ride control shock absorber of stroke of the present invention;
Figure 16 is the fixing whole-cutaway view on the ear assembly plan view under the vibration damper in the responsive ride control shock absorber of stroke of the present invention;
Figure 17 is the damping control characteristic of the low speed stretched stroke little stroke of the responsive ride control shock absorber of stroke of the present invention when changing the oil outlet area;
Figure 18 is that the resistance of shock absorber of the responsive ride control shock absorber of stroke of the present invention when adjustment stretching travel spring fixed seat extrusion increases some adjustment characteristic;
Figure 19 is the resistance of shock absorber saltus step adjustment characteristic of the responsive ride control shock absorber of stroke of the present invention when changing the tappet push rod extrusion of stretching travel piston tappet;
Figure 20 is the damping control characteristic of the vibration damper low speed lower compression stroke little stroke of the responsive ride control shock absorber of stroke of the present invention when changing the oil outlet area;
Figure 21 is that the resistance of shock absorber of the responsive ride control shock absorber of stroke of the present invention when adjustment compression stroke spring fixed seat extrusion increases some adjustment characteristic;
Figure 22 is the resistance of shock absorber saltus step adjustment characteristic of the responsive ride control shock absorber of stroke of the present invention when changing the tappet push rod extrusion of compression piston tappet;
Figure 23 is the damping characteristic regulation range under the responsive ride control shock absorber low speed of the stroke of the present invention operating mode;
Among the figure: 1. former damper piston up stroke limiting stopper, 2. middle cylinder retaining ring, 3. former damper piston assembly, 4. oil storage cylinder, 5. middle cylinder, 6. piston cylinder; 7. stretching one-way valve fixing bolt, 8. stretching check valve sheet, 9. compression piston tappet, 10. compression stroke spring fixed seat, 11. compression stroke low speed valve bodies, 12. by-pass valve bodies; 13. the compression stroke spring, 14. valve body auxiliary hole sealing covers, 15. bypass valve floating pistons, 16. floating piston rings, 17. stretching travel springs, 18. stretching travel piston tappets; 19. the stretching travel spring fixed seat, 20. stretching travel low speed valve bodies, 21. stretching low speed valve body sealing rings, 22. extension spring fixed base seal rings, 23. stretching tappet seal rings, 24. compression check valve sheet; 25. compression one-way valve fixing bolt, 26. piston cylinder bottom valve assemblies, fixing ear assembly under 27. vibration dampers, 28. back oil roads, 29. spill ports; 30. dunnage, 31. spring valve plates, 32. stretching openings, 33. compressive flow through holes, 34. tappet push rods; 35. the tappet screw thread, 36. tappet limited rings, 37. tappet seal ring fixed grooves, 38. tappet spanners, 39. tappet U-groove bevels; 40. the spring lock chamber, 41. piston tappet pilot holes, 42. spring fixed seat screw threads, 43. spring fixed seat seal ring fixed grooves, 44. piston tappet closed holes; 45. the spring fixed seat spanner, 46. spring fixed seat pilot holes, 47. spring fixed seat closed holes, 48. low speed valve body spanners, 49. low speed valve body sealing ring fixed grooves; 50. low speed valve body screw thread, 51. low speed valve rods, 52. oil storage cylinder intercommunicating pores, 53. bypass valve compression stroke oil outlets, 54. bypass valve stretching travel ostiums; 55. stretching one-way valve fixed bolt hole, the unidirectional valve pocket of 56. stretchings, 57. auxiliary holes, 58. by pass vavle piston chambeies, the unidirectional valve pocket of 59. compressions; 60. compression one-way valve fixed bolt hole, 61. bypass valve stretching travel oil outlets, 62. bypass valve compression stroke ostiums, 63. bypass valve compression stroke communicated cavitys, 64. times oil storage cylinder communicated cavitys; 65. recuperation valve spring at the bottom of the piston cylinder, compensation valve block at the bottom of 66. piston cylinders, 67. piston cylinder base compression valve blocks, 68. piston cylinder bottom valve bodies, 69. oil storage cylinder lower end caps; 70. the vibration damper lower fixed hole, 71 upper piston chambeies, 72. intermediate cavity, shoe cream room on 73., 74. lower piston chambeies; 75. following shoe cream room, 76. shock absorber oils, 77. pistons circulation valve spring, 78. pressure spring fixed base seal rings, 79. compression low speed valve body sealing rings; 80. compression bypass valve system, 81. stretching bypass valve system, 82. piston bodies, 83. compression tappet seal rings, 84. floating piston ring fixed grooves; 85. piston rod, annular end face on 86. limiting stoppers, 87. limiting stopper intermediate annular end faces, annular end face on 88. retaining rings, 89. retaining ring intermediate annular end faces.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
Consult Fig. 1, the responsive ride control shock absorber of stroke of the present invention is made up of with parallelly connected bypass valve telescopic shock absorber.Described telescopic shock absorber comprises under former damper piston up stroke limiting stopper 1, middle cylinder retaining ring 2, former damper piston assembly 3, oil storage cylinder 4, middle cylinder 5, piston cylinder 6, piston cylinder bottom valve assembly 26 and the vibration damper fixedly ear assembly 27.
Described parallelly connected bypass valve comprise stretching one-way valve fixing bolt 7, stretching check valve sheet 8, by-pass valve body 12, valve body auxiliary hole sealing cover 14, bypass valve floating piston 15, floating piston ring 16, compression check valve sheet 24, compression one-way valve fixing bolt 25, compression bypass valve be 80 with the stretching bypass valve be 81.Wherein, the compression bypass valve is 80 to be that 81 structures are identical with the stretching bypass valve.
Former damper piston up stroke limiting stopper 1 is contained in the former damper piston assembly 3 to become to be slidingly matched on the piston rod 85 through its inner hole sleeve; The top end of former damper piston up stroke limiting stopper 1 and upper end external cylindrical surface contact with the end face and the inner cylindrical surface of former auto shock absorber 4 inner chambers upper end; The cylndrical surface of the intermediate section of former damper piston up stroke limiting stopper 1 is connected with the central through bore Spielpassung of middle cylinder retaining ring 2, on the limiting stopper of top, the intermediate section cylndrical surface of former damper piston up stroke limiting stopper 1 on the retaining ring of annular end face 86 and middle cylinder retaining ring 2 annular end face 88 contact.The lower end of middle cylinder retaining ring 2 inserts that contact connects in the endoporus of middle cylinder 5 upper ends that are positioned at oil storage cylinder 4 inner chambers, and annular end face contacts on the retaining ring intermediate annular end face 89 of middle cylinder retaining ring 2 and the middle cylinder of middle cylinder 5.The lower end of former damper piston up stroke limiting stopper 1 inserts that contact connects in the endoporus of piston cylinder 6 upper ends that are positioned at middle cylinder 5 inner chambers, and annular end face contacts with the limiting stopper intermediate annular end face 87 of former damper piston up stroke limiting stopper 1 on the piston cylinder of piston cylinder 6.Piston body 82 in the former damper piston assembly 3 is slidingly connected with the endoporus of piston cylinder 6, and promptly former damper piston assembly 3 can be free to slide in piston cylinder 6.The lower end that by-pass valve body 12 is sleeved on piston cylinder 6 is a transition fit, and the lower end of oil storage cylinder 4 is sleeved on the dome ring body of by-pass valve body 12 upper ends, adopts welding manner to fix between oil storage cylinder 4 and the by-pass valve body 12; Become interference fit to connect in the endoporus of the lower end insertion by-pass valve body 12 dome ring bodies of middle cylinder 5; The external cylindrical surface of the piston cylinder bottom valve body 68 in the piston cylinder bottom valve assembly 26 upper end contacts with piston cylinder 6 lower end endoporus and is connected, and the annular end face that size equates on piston cylinder 6 lower end surfaces and the piston cylinder bottom valve body 68 contacts.Piston cylinder 6 is clamped up and down by former damper piston up stroke limiting stopper 1 and piston cylinder bottom valve assembly 26.Fixedly the endoporus of the upper end of the oil storage cylinder lower end cap 69 of ear assembly 27 through wherein and by-pass valve body 12 lower ends is equipped and adopt welding manner to fix under the vibration damper, under the curved surface of piston cylinder bottom valve assembly 26 through 68 times bottoms of piston cylinder bottom valve body wherein and the vibration damper fixedly the negative camber of the oil storage cylinder lower end cap 69 in the ear assembly 27 contact and be connected.The fixing rotational axis conllinear of the oil storage cylinder lower end cap 69 in the ear assembly 27 under former damper piston up stroke limiting stopper 1, oil storage cylinder 4, middle cylinder retaining ring 2, middle cylinder 5, piston cylinder 6, former damper piston assembly 3, piston cylinder bottom valve assembly 26 and the vibration damper.
By-pass valve body 12 right-hand members are communicated with lower piston chamber 74 with bypass valve compression stroke communicated cavity 63 and last shoe cream room 73, intermediate cavity 72 through the unidirectional valve pocket of bypass valve compression stroke oil outlet 53, bypass valve stretching travel ostium 54, the unidirectional valve pocket 56 that stretches, compression 59, bypass valve stretching travel oil outlet 61, bypass valve compression stroke ostium 62.The stretching one-way valve fixed bolt hole 55 that is arranged in identical bypass valve stretching travel ostium 54 neutral positions that are uniformly distributed with in a circumferential direction of 4 structures is equipped with stretching one-way valve fixing bolt 7, and stretching one-way valve fixing bolt 7 is pressed on stretching check valve sheet 8 left on the left side of the unidirectional valve pocket 56 of stretching of by-pass valve body 12.The compression one-way valve fixed bolt hole 60 that is arranged in identical bypass valve compression stroke ostium 62 neutral positions that are uniformly distributed with in a circumferential direction of 4 structures is equipped with compression one-way valve fixing bolt 25, and compression one-way valve fixing bolt 25 will compress on the left side of the unidirectional valve pocket 59 of compression that check valve sheet 24 is pressed on by-pass valve body 12 left.The compression bypass valve is 80 to be connected with compression bypass valve opening on the by-pass valve body 12 through screw thread, and the stretching bypass valve is 81 to pass through screw thread and be connected with stretching bypass valve opening on the by-pass valve body 12.The compression bypass valve be 80 with the stretching bypass valve be that the bypass valve floating piston 15 that can slide up and down is installed in the by pass vavle piston chamber 58 between 81, at bypass valve floating piston 15 the floating piston ring 16 that is used to seal is installed on every side.The compression bypass valve is 80, the stretching bypass valve is 81, the rotational axis conllinear in floating piston 15 and by pass vavle piston chamber 58.On 58 right side walls of by pass vavle piston chamber promptly and stretching one-way valve fixed bolt hole 55 and compression one-way valve fixed bolt hole 60 corresponding positions two valve body auxiliary hole sealing covers 14 are installed, and use welded seal.
The responsive ride control shock absorber of stroke of the present invention removes in the last shoe cream room 73 has certain volume gas, is used to absorb piston rod 85 volumes, and its complementary space all is full of shock absorber oil 76.
Consult Fig. 2, the compression bypass valve is 80 to comprise compression piston tappet 9, compression stroke spring fixed seat 10; Compression stroke low speed valve body 11, compression stroke spring 13, pressure spring fixed base seal ring 78; Compression low speed valve body sealing ring 79, compression tappet seal ring 83.
Compression stroke low speed valve body 11 is installed among the compression bypass valve opening on the by-pass valve body 12 to being threaded, and compression low speed valve body sealing ring 79 is installed between the two.Compression stroke spring fixed seat 10 is installed among the compression stroke low speed valve body 11 to being threaded, and pressure spring fixed base seal ring 78 is installed between the two.The lower end of compression stroke spring fixed seat 10 is mounted with compression stroke spring 13.Compression piston tappet 9 is installed among the compression stroke spring fixed seat 10 to being threaded, and compression tappet seal ring 83 is installed between the two.
Consult Fig. 3, the stretching bypass valve is 81 to comprise stretching travel spring 17, stretching travel piston tappet 18; Stretching travel spring fixed seat 19, stretching travel low speed valve body 20, stretching low speed valve body sealing ring 21; Extension spring fixed base seal ring 22, stretching tappet seal ring 23.
Stretching travel low speed valve body 20 is installed among the stretching bypass valve opening on the by-pass valve body 12 to being threaded, and stretching low speed valve body sealing ring 21 is installed between the two.Stretching travel spring fixed seat 19 is installed among the stretching travel low speed valve body 20 to being threaded, and extension spring fixed base seal ring 22 is installed between the two.The upper end of stretching travel spring fixed seat 19 is mounted with stretching travel spring 17.Stretching travel piston tappet 18 is installed among the stretching travel spring fixed seat 19 to being threaded, and stretching tappet seal ring 23 is installed between the two.
Consult Fig. 4, former damper piston up stroke limiting stopper 1 is parts in the former vibration damper.Former damper piston up stroke limiting stopper 1 is provided with back oil road 28; Back oil road 28 will be communicated with the external cylindrical surface of former damper piston up stroke limiting stopper 1 periphery along the inner cylindrical surface of the former damper piston up stroke limiting stopper 1 axial central through bore that is provided with; In the responsive ride control shock absorber extension stroke of stroke; The fluid of piston rod surface is scraped at place, oil return road junction, and flows out through back oil road 28.
Consult Fig. 5, middle cylinder retaining ring 2 is an annulus class formation spare, and external cylindrical surface is stepped.Middle cylinder retaining ring 2 upper ends radially be processed with four spill ports 29 that the structure that is uniformly distributed with is identical, the fluid through back oil road 28 flows out flows back to oil storage cylinder 4 through spill port 29.
Consult Fig. 6, former damper piston assembly 3 is parts in the former vibration damper, and wherein piston rod 85 1 ends are welded with dunnage 30 and are used to bear vibration damper load.Deformable spring valve plate 31 is installed in the structure of the other end, is processed with the normal open hole of several minor diameters on the spring valve plate 31.Spring valve plate 31 1 sides apply pretightening force by piston circulation valve spring 77 and are pressed on the piston body 82, are processed with the normal open hole on the piston body 82.
Consult Fig. 7; Oil storage cylinder 4 in the vibration damper is the structural member in the former commercial car vibration damper; Processed by seamless steel pipe, left end turns in suppressing, through the flat top surface and the fixing former damper piston up stroke limiting stopper 1 of steel pipe inner cylindrical surface of being inverted to form; Oil storage cylinder 4 the other ends are dressed up contact through end face and inner cylindrical surface and the dome ring body cover on the by-pass valve body 12 and are connected, and fixing through welding.
Consult Fig. 8, middle cylinder 5 is processed by seamless steel pipe.Middle cylinder 5 one ends are connected with middle cylinder retaining ring 2 interference fit with inner cylindrical surface through end face.The endoporus of the other end through the dome ring body on end face and external cylindrical surface and the by-pass valve body 12 is fitted to interference fit and is connected.
Consult Fig. 9, piston cylinder 6 is processed by seamless steel pipe.Piston cylinder 6 one ends are connected with gap, cylndrical surface, former damper piston up stroke limiting stopper 1 lower end.The external cylindrical surface upper end of the piston cylinder bottom valve body 64 in the other end and the piston cylinder bottom valve assembly 26 is connected.Be connected the stretching opening 32 that an end is processed with 4 circumference uniform distributions with former damper piston up stroke limiting stopper 1, the other end is processed with the compressive flow through hole 33 of 6 circumference uniform distributions.
Consult Figure 10, compression piston tappet 9 is identical with stretching travel piston tappet 18 structures, is bar class formation spare.The left end of compression piston tappet 9 and stretching travel piston tappet 18 is processed with columniform tappet push rod 34, piston tappet pilot hole 41 Spielpassung on the external cylindrical surface of tappet push rod 34 and compression stroke spring fixed seat 10 and the stretching travel spring fixed seat 19.The right-hand member of tappet push rod 34 is connected with the screw rod that is processed with tappet screw thread 35, and tappet screw thread 35 is connected with the internal thread of compression stroke spring fixed seat 10 with stretching travel spring fixed seat 19, and the path of tappet screw thread 35 is greater than the external diameter of tappet push rod 34.The right side of tappet screw thread 35 is processed with tappet limited ring 36, and tappet limited ring 36 contacts the effect of playing compression piston tappet 9 and stretching travel piston tappet 18 stroke limits with annular end face between the tappet screw thread 35 with piston tappet closed hole 44 left end face.The right side of tappet limited ring 36 is processed with tappet seal ring fixed groove 37, is used for fixing compression tappet seal ring 83 and stretching tappet seal ring 23.The right side of tappet seal ring fixed groove 37 is provided with tappet spanner 38; Tappet spanner 38 right parts are processed with tappet U-groove bevel 39. can rotate compression piston tappet 9 and stretching travel piston tappet 18 easily through tappet U-groove bevel 39; Through the interconnect function of tappet screw thread 35, can make compression piston tappet 9 and stretching travel piston tappet 18 produce axial motion.
Consult Figure 11, compression stroke spring fixed seat 10 is identical with stretching travel spring fixed seat 19 structures, is cylinder class formation spare.The left end of compression stroke spring fixed seat 10 and stretching travel spring fixed seat 19 is for cooperating the cylindrical body that play the guiding role with compression stroke low speed valve body 11 with fixed base pilot hole 46 clearance seals on the stretching travel low speed valve body 20.Cylindrical right-hand member is connected with the threaded circular cylinder that is processed with spring fixed seat screw thread 42; Spring fixed seat screw thread 42 is used for being connected with stretching travel low speed valve body 20 internal threads with compression stroke low speed valve body 11, and spring fixed seat screw thread 42 paths are greater than the left circles column diameter.Compression stroke spring fixed seat 10 and stretching travel spring fixed seat 19 low order ends are processed with the spring fixed seat spanner 45 of hexagon, and rotation spring fixed base spanner 45 can make compression stroke spring fixed seat 10 and stretching travel spring fixed seat 19 produce axial motions.Be processed with and be processed with the spring fixed seat seal ring fixed groove 43 that is used for fixing extension spring fixed base seal ring 22 and pressure spring fixed base seal ring 78 on threaded circular cylinder and the cylndrical surface between the spring fixed seat spanner 45 of spring fixed seat screw thread 42.
Compression stroke spring fixed seat 10 has spring lock chamber 40 with stretching travel spring fixed seat 19 left end cylindrical body machined; Spring lock chamber 40 is made up of the arc-shaped slot of an interior cylindrical hole and diameter mounting spring bigger than cylindrical hole; End one circle of spring embeds in this arc-shaped slot, thereby has realized the fixing of spring.The right-hand member of spring lock chamber 40 is connected with coaxial piston tappet pilot hole 41; The right-hand member of piston tappet pilot hole 41 is connected with interior threaded hole; This interior threaded hole is used for being connected with the screw rod that is processed with tappet screw thread 35; The right-hand member of interior threaded hole is connected with the piston tappet closed hole 44 of diameter greater than the interior threaded hole diameter, and the inner cylindrical surface of piston tappet closed hole 44 contacts with compression tappet seal ring 83 with stretching tappet seal ring 23, plays the effect of sealing fluid.Piston tappet closed hole 44 contacts the effect of playing piston tappet stroke limit with tappet limited ring 36 with the end face of tappet screw thread 35 joints with the end face of interior threaded hole joint.
Consult Figure 12, compression stroke low speed valve body 11 is identical with stretching travel low speed valve body 20 structures, is cylinder class formation spare.Compression stroke low speed valve body 11 and stretching travel low speed valve body 20 external cylindrical surfaces be processed with low speed valve rod 51, the inner cylindrical surface Spielpassung of by pass vavle piston chamber 58 minimums on low speed valve rod 51 external cylindrical surfaces and the by-pass valve body 12 bottom.Low speed valve rod 51 upper ends are connected with the cylindrical body that is processed with low speed valve body screw thread 50; Low speed valve body screw thread 50 is used for being connected with the internal thread of stretching bypass valve opening with the compression bypass valve opening on by-pass valve body 12 right sides, and low speed valve body screw thread 50 internal diameters are greater than the periphery diameter of low speed valve rod 51.Compression stroke low speed valve body 11 and stretching travel low speed valve body 20 are processed with the low speed valve body spanner 48 of hexagon topmost; Utilize spanner 48 can rotate compression stroke low speed valve body 11 and stretching travel low speed valve body 20, realize the axial motion of compression stroke low speed valve body 11 and stretching travel low speed valve body 20.Be processed with the low speed valve body sealing ring fixed groove 49 that is used for fixing compression low speed valve body sealing ring 79 and low stretching low speed valve body sealing ring 21 on the cylndrical surface between low speed valve body screw thread 50 and the low speed valve body spanner 48.
Compression stroke low speed valve body 11 is processed with spring fixed seat pilot hole 46 vertically with the center of stretching travel low speed valve body 20 lower ends; The upper end of spring fixed seat pilot hole 46 is connected with interior threaded hole, and this interior threaded hole is used for being connected with spring fixed seat screw thread 42 on the stretching travel spring fixed seat 19 with compression stroke spring fixed seat 10.The upper end of interior threaded hole is processed with spring fixed seat closed hole 47; Spring fixed seat closed hole 47 diameters are greater than Major Diam; Fixed base closed hole 47 inner cylindrical surfaces contact with pressure spring fixed base seal ring 78 with extension spring fixed base seal ring 22, play the effect of sealing fluid.
Consult Figure 13-a, by-pass valve body 12 is housing class formation spares that the cuboid by the cylindrical body in left side and right side links into an integrated entity.Be processed with coaxial ladder hole vertically from top to bottom on the cylindrical central axis in left side; First sector hole is the middle cylinder hole; The middle cylinder hole is used for fixing the middle cylinder of installing in the responsive ride control shock absorber of stroke 5, and middle cylinder hole and middle cylinder 5 external cylindrical surface transition are sealed and matched.And having formed dome ring body (be cylindrical upper end for the dome ring body equipped of middle cylinder hole coaxial line) between the inner cylindrical surface in the external cylindrical surface of middle cylinder hole coaxial line and middle cylinder hole with oil storage cylinder 4, the lower end of dome ring body and oil storage cylinder 4 is equipped with.Second section is the piston cylinder lumen pore, forms the part of intermediate cavity 72 between piston cylinder lumen pore and the piston cylinder.The the 3rd and the 5th sector hole is called as upper piston cylinder hole and lower piston cylinder hole, and upper piston cylinder hole is identical with lower piston cylinder bore dia, upper piston cylinder hole and lower piston cylinder hole and piston cylinder 6 external cylindrical surface Spielpassung.The 4th sector hole is called as compression piston cylinder lumen pore; Form bypass valve compression stroke communicated cavity 63 between compression piston cylinder lumen pore and the piston cylinder 6; Bypass valve compression stroke communicated cavity 63 is communicated with compressive flow through hole 33 and bypass valve stretching travel oil outlet 61 and bypass valve compression stroke ostium 62, and is relative with compressive flow through hole 33 on bypass valve compression stroke communicated cavity 63 axial positions.The compression stroke oil storage cylinder that the 6th sector hole is with piston cylinder 6 forms following oil storage cylinder communicated cavity 64 is communicated with lumen pore, is used for oil storage cylinder intercommunicating pore 52 is communicated with following shoe cream room 75.The 7th sector hole is called the fixedly earhole of going up that is used to locate under the vibration damper fixing ear assembly 27; The 8th sector hole is called and is used to connect under the vibration damper the fixedly following fixedly earhole of ear assembly 27; Promptly go up fixedly earhole with down fixedly earhole be used to install and fix under the vibration damper fixedly ear assembly 27, promptly go up fixedly the end toroidal surface of earhole and contact to be connected with the top anchor ring of oil storage cylinder lower end cap 69 and play the role of positioning; Fixedly the external cylindrical surface transition fit of earhole and oil storage cylinder lower end cap 69 plays interconnect function down, adopts welding manner further fixing between the external cylindrical surface of oil storage cylinder lower end cap 69 and by-pass valve body 12 bottom surfaces again.
Be processed with the by pass vavle piston chamber 58 parallel with the left circles column axis in the by-pass valve body 12 right side cuboids, piston cavity 58 intermediate sections are the minimum columniform floating piston lumen pore of diameter, and the external cylindrical surface of floating piston lumen pore and floating piston ring 16 is slidingly matched.The two ends up and down of floating piston lumen pore connect two sections interior threaded holes (going up interior threaded hole and following interior threaded hole); Be respectively applied for compress bypass valve be 80 and the compression bypass valve be 81 to be connected, (going up interior threaded hole and following interior threaded hole) screw thread minor diameter is greater than floating piston lumen pore diameter.The arranged outside of the last interior threaded hole of floating piston lumen pore upper end has compression bypass valve opening, and compression bypass valve bore dia is greater than the big footpath of screw thread, and compression bypass valve opening contacts with compression low speed valve body sealing ring 79, plays the fluid seal action.The arranged outside of the following interior threaded hole of floating piston lumen pore lower end has stretching bypass valve opening, and stretching bypass valve bore dia contacts with stretching low speed valve body sealing ring 21 greater than the big footpath of screw thread, plays the fluid seal action.
Be processed with a series of holes between floating piston lumen pore in the floating piston chamber 58 and the left circles cylinder endoporus; Wherein from top to bottom; Between floating piston lumen pore and left hand piston cylinder lumen pore, be processed with bypass valve compression stroke oil outlet 53 and be connected logical two chambers; The right-hand member of bypass valve compression stroke oil outlet 53 belows is processed with the unidirectional valve pocket 56 that stretches; The stretch left side of unidirectional valve pocket 56 is provided with the stretching one-way valve fixed bolt hole 55 of coaxial line, and stretching one-way valve fixed bolt hole 55 is used for fixing stretching one-way valve fixing bolt 7.Be to be uniformly distributed with 4 identical identical bypass valve stretching travel ostiums 54 of 54,4 structures of bypass valve stretching travel ostium of structure on the circumference at center left chamber is connected with the unidirectional valve pocket 56 of stretching promptly around the stretching one-way valve fixed bolt hole 55 with its axis.Stretch the diameter of unidirectional valve pocket 56 inner cylindrical surfaces greater than the diameter of identical bypass valve stretching travel ostium 54 outermost edge of 4 structures.Be processed with the bypass valve stretching travel oil outlet 61 that is communicated with two chambers between the lower end of floating piston lumen pore and the bypass valve compression stroke communicated cavity 63; The right side of bypass valve stretching travel oil outlet 61 tops is processed with the unidirectional valve pocket 59 of compression; Compress unidirectional valve pocket 59 left sides and be provided with coaxial compression one-way valve fixed bolt hole 60; Be used for fixing compression one-way valve fixing bolt 25; Around the compression one-way valve fixed bolt hole 60 with its axis be center circumferential be uniformly distributed with the identical bypass valve compression stroke ostiums 62 of identical 62,4 structures of bypass valve compression stroke ostium of 4 structures with bypass valve compression stroke communicated cavity 63 with compress unidirectional valve pocket 59 and be connected.The diameter that compresses unidirectional valve pocket 59 inner cylindrical surfaces is greater than the diameter of identical bypass valve compression stroke ostium 62 outermost edge of 4 structures.
Be processed with the auxiliary hole 57 of the axis normal of two axis and floating piston lumen pore on the right side wall of floating piston lumen pore, upper end auxiliary hole and bypass valve compression stroke oil outlet 53 is relative with the unidirectional valve pocket 56 that stretches, and area enough covers two holes.The unidirectional valve pocket of lower end auxiliary hole and stretching valve compression stroke oil outlet 61 and compression 59 is relative, and area enough covers two holes.Two auxiliary holes are used to process the identical bypass valve stretching travel ostium 54 of 53,4 structures of bypass valve compression stroke oil outlet, stretching one-way valve fixed bolt hole 55, the unidirectional valve pocket of the unidirectional valve pocket 56 that stretches, compression 59, compression one-way valve fixed bolt hole 60, bypass valve stretching travel oil outlet 61 use during with bypass valve compression stroke ostium 62.After process finishing, two identical valve body auxiliary hole sealing covers 14 of structure are fit in two auxiliary holes and use the welding manner sealing and fixing.
Consult Figure 13-b; Cylindrical left side in the by-pass valve body 12 promptly is evenly equipped with seven axial oil storage cylinder intercommunicating pores 52 that are communicated with following oil storage cylinder communicated cavity 64 that structure is identical away from the periphery of the semicylinder of cuboid one side, and oil storage cylinder intercommunicating pore 52 is communicated with goes up shoe cream room 73 and following oil storage cylinder communicated cavity 64.
Consult Figure 14, bypass valve floating piston 15 is dish class formation spare, and the diameter of bypass valve floating piston 15 is less than floating piston chamber face diameter, and the thickness of bypass valve floating piston 15 is enough to satisfy the leading role of bypass valve floating piston 15.Being processed with the floating piston ring fixed groove 84 that is used to install floating piston ring 16 on the external cylindrical surface of bypass valve floating piston 15, is Spielpassung between floating piston ring 16 and the floating piston ring fixed groove 84.
Consult Figure 15, piston cylinder bottom valve assembly 26 is parts in the former commercial car vibration damper.The main body of piston cylinder bottom valve assembly 26 is a piston cylinder bottom valve body 68, and piston cylinder bottom valve body 68 upper ends are equipped with at the bottom of the piston cylinder compensation valve block 66 at the bottom of the recuperation valve spring 65 and piston cylinder, and the lower end is equipped with piston cylinder base compression valve block 67.Piston cylinder bottom valve assembly 26 is fixedly connected with piston cylinder 6 through the cylndrical surface of piston cylinder bottom valve body 68 upper ends, and promptly the internal diameter of the cylndrical surface of piston cylinder bottom valve body 68 upper ends and piston cylinder 6 is a transition fit.The lower end of piston cylinder bottom valve body 68 contacts fixing with the inner conical face of oil storage cylinder lower end cap 69 through the circular cone bottom surface.
Consult Figure 16, under the vibration damper fixedly ear assembly 27 be the parts in the former commercial car vibration damper.Under the vibration damper fixedly ear assembly 27 comprise under oil storage cylinder lower end cap 69 and the vibration damper fixedly ear, under oil storage cylinder lower end cap 69 and the vibration damper fixedly ear employing welding manner be fixedly connected.Under the vibration damper fixedly ear be provided with vibration damper lower fixed hole 70, be used to wear the bolt vibration damper, oil storage cylinder lower end cap 69 is for by the circular shell class formation spare of being formed at the bottom of cylinder and the curved surface.Fixedly the rotational axis of the vibration damper lower fixed hole 70 on the ear assembly 27 and the rotational axis of oil storage cylinder lower end cap 69 intersect vertically under the vibration damper.Under the vibration damper fixedly the earhole of going up fixedly of the external cylindrical surface of the top end of the ear assembly 27 oil storage cylinder lower end cap 69 through wherein and upper end and bypass valve housing 12 bottoms contact to be connected with following fixedly earhole and be connected with transition fit, the employing welding manner is fixed between the external cylindrical surface of oil storage cylinder lower end cap 69 and by-pass valve body 12 bottom surfaces.After the installation, the axis of vibration damper lower fixed hole 70 and piston rod 85 intersect vertical axis.
Stretching check valve sheet 8 is identical with compression check valve sheet 24 structures, is disc-shaped structure spare, is processed by Steel Spring Plate.Stretching check valve sheet 8 and compression check valve sheet 24 diameter of bores are greater than stretching one-way valve fixing bolt 7 and compression one-way valve fixing bolt 25 diameters.Stretching check valve sheet 8 and compression check valve sheet 24 outside diameters are greater than the outer ledge diameter of the identical bypass valve stretching travel ostium 54 of 4 structures identical bypass valve compression stroke ostium 62 with 4 structures, less than the unidirectional valve pocket 56 of stretching and compress the diameter of bore of unidirectional valve pocket 59.
The responsive ride control shock absorber low speed of stroke stretched stroke working principle:
Little stroke:
Former damper piston assembly 3 moves up, and the volume in upper piston chamber 71 reduces, and pressure increases, greater than the pressure in the lower piston chamber 74.Fluid part in the upper piston chamber 71 is crossed shock absorber piston through the normal open orifice flow in the spring valve plate in the piston assembly 3 31 and is got into lower piston chamber 74, produces damping force.
The stretching opening 32 that another part fluid is flowed through on the piston cylinder 6 gets into intermediate cavity 72; Most of fluid is pushed the less stretching check valve sheet 8 of rigidity open; Get into 58 tops, by pass vavle piston chamber through the bypass valve stretching travel ostium 54 and the unidirectional valve pocket 56 that stretches, fraction fluid gets into 58 tops, by pass vavle piston chamber through bypass valve compression stroke oil outlet 53.Bypass valve floating piston 15 top fluid volumes increase, and pressure and upper piston chamber 71 are approaching.On the other hand; Before if former damper piston assembly 3 moves up; Carry out the big stroke motion of overcompression stroke; Be in position on the lower side in the piston cylinder 6, bypass valve floating piston 15 contacts with compression stroke spring 13 and compresses, and compression stroke spring 13 will act on bypass valve floating piston 15 certain pressures.Because of surface friction drag between floating piston ring 16 and 58 intermediate section cylndrical surface, by pass vavle piston chamber is very little, bypass valve floating piston 15 moves down under pressure, and bypass valve floating piston 15 below volumes reduce.Because compression check valve sheet 24 diameters can not circulate fluid greater than the outward edge of bypass valve compression stroke ostium 62.Bypass valve floating piston 15 below fluid get into bypass valve compression stroke communicated cavity 63 by bypass valve stretching travel tap hole 61, then get into lower piston chamber 74 through compression intercommunicating pore 33.During fluid process bypass valve stretching travel tap hole 61, because the orifice restriction effect produces damping force, this damping force is relevant with the net sectional area of speed and bypass valve stretching travel tap hole 61.Through circumgyration stretch stroke low speed valve 20, low speed valve rod 51 is moved axially with respect to by pass vavle piston chamber 58, the circulation area that changes bypass valve stretching travel tap hole 61 can change the damping force size of little stroke under the vibration damper low speed.Consulting Figure 17, is the damping control characteristic of the little stroke of vibration damper low speed stretched stroke when changing the oil outlet area.
Because piston rod outwards moves; Total volume in the damper piston cylinder increases; Lower piston chamber 74 pressure reduce, less than the oil storage cylinder internal pressure, and compensation valve block 66 distortion at the bottom of the piston cylinder on the piston cylinder bottom valve assembly 26; Produce passage between compensation valve block 66 and the piston cylinder bottom valve body 68 at the bottom of the piston cylinder, the liquid in the following shoe cream room 75 gets into lower piston chamber 74 through the passage between compensation valve block 66 and the piston cylinder bottom valve body 68 at the bottom of the piston cylinder.Last shoe cream room 73 is mobile each other through oil storage cylinder intercommunicating pore 52 and following oil storage cylinder communicated cavity 64 with the liquid in the following shoe cream room 75.
Big stroke:
Continue to move up with former damper piston assembly 3; The fluid that flows to by pass vavle piston chamber 58 increases gradually; Bypass valve floating piston 15 constantly moves down, and when bypass valve floating piston 15 contacted and pushes with stretching travel spring 17, bypass valve floating piston 15 top oil liquid pressures increased; Cause vibration damper upper piston chamber 71 pressure to increase, the damping force that shows as vibration damper increases.Along with the decrement increase of stretching travel spring 17, the damping force of vibration damper increases, and the speedup of damping force depends on the rigidity of stretching travel spring 17.Through circumgyration stretch stroke spring fixed seat 19, stretching travel spring 17 is moved vertically, thus corresponding stroke when changing damping force and increasing.Consult Figure 18, the resistance of shock absorber when being adjustment stretching travel spring fixed seat 19 extrusions increases some adjustment characteristic.
When bypass valve floating piston 15 continues to come downwards to when contacting with stretching travel piston tappet 18,15 motions of bypass valve floating piston stop, and bypass valve floating piston 15 tops and upper piston chamber oil 71 hydraulic couplings increase suddenly; When increasing to spring valve plate 31 cracking pressures; Spring valve plate 31 distortion produce the annular pass in the middle of spring valve plate 31, circulation area increases; Fluid gets into lower piston chamber 74 through passage, produces damping force.The size of this damping force depends on the rigidity of spring valve plate 31, and when spring valve plate 31 rigidity are enough big, the damping force of vibration damper will produce a saltus step when bypass valve floating piston 15 contact stretching travel piston tappets 18, raise suddenly.Through circumgyration stretch stroke piston tappet 18, change makes the extrusion of tappet push rod 34 with respect to by pass vavle piston chamber 58, can change the corresponding stroke of absorber damping force saltus step, and the increment of saltus step.Can make the jumping vanishing of resistance of shock absorber through certain adjustment.Consulting Figure 19 is the resistance of shock absorber saltus step adjustment characteristic when changing tappet push rod 34 extrusions of stretching travel piston tappet 18.
The responsive ride control shock absorber low speed of stroke lower compression stroke working principle:
Little stroke:
Former damper piston assembly 3 moves down, and lower piston chamber 74 volumes reduce, and pressure increases, greater than upper piston chamber 71.Under pressure; Piston circulation valve spring 77 is compressed; Spring valve plate 31 in the former damper piston assembly 3 produces circulation passage to piston rod one side shifting around spring valve plate 31, a fluid part flows into upper piston chamber 71 through this passage in the lower piston chamber 74.For avoiding the too small upper piston chamber 71 that makes of passage vacuum to occur, piston circulation valve spring 77 pretightening forces and rigidity are less, and the damping force that here produces is also less, and lower piston chamber 74 is also less with upper piston chamber 71 pressure differences.
Other some fluid flows to bypass valve under pressure in the lower piston chamber 74; Wherein most of fluid is pushed the less compression check valve sheet 24 of rigidity open; Through bypass valve compression stroke ostium 62 and compress unidirectional valve pocket 59 and get into 58 lower ends, by pass vavle piston chamber, fraction fluid gets into 58 lower ends, by pass vavle piston chamber through bypass valve stretching travel oil outlet 61.Bypass valve floating piston 15 below fluid volumes increase, and pressure and lower piston chamber 74 are approaching.On the other hand; Before if former damper piston assembly 3 moves down; Carry out the big stroke motion of overstretching stroke; Be in position on the upper side in the piston cylinder 6, bypass valve floating piston 15 contacts with stretching travel spring 17 and compresses, and compression stroke spring 13 will act on bypass valve floating piston 15 certain pressures.Because of the surface friction drag between floating piston ring 16 and 58 intermediate section cylndrical surface, by pass vavle piston chamber is very little, bypass valve floating piston 15 moves up under pressure, and bypass valve floating piston 15 top volumes reduce.Because stretching check valve sheet 8 diameters can not circulate fluid greater than the outward edge of bypass valve stretching travel ostium 54.The fluid of bypass valve floating piston 15 belows gets into intermediate cavity 72 by bypass valve compression stroke oil outlet 53, then gets into upper piston chamber 71 through stretching intercommunicating pore 32.During fluid process bypass valve compression stroke oil outlet 53; Because the orifice restriction effect produces damping force; This damping force is relevant with the net sectional area of speed and bypass valve compression stroke oil outlet 53, but since up and down between the piston cavity pressure difference less, the flow and the damping force of generation are limited.Through rotation compression stroke low speed valve 11, low speed valve rod 51 is moved axially with respect to by pass vavle piston chamber 58, change the circulation area of bypass valve compression stroke oil outlet 53, can interiorly among a small circle change the damping force size of little stroke under the vibration damper low speed.Consulting Figure 20, is the damping control characteristic of the little stroke of vibration damper low speed lower compression stroke when changing the oil outlet area.
Because piston rod 85 gets into piston cylinder 6; Total volume reduces in the piston cylinder 6; Pressure raises, and greater than shoe cream room pressure, another part fluid gets into shoe cream room 75 down through the normal open hole on the piston cylinder base compression valve block 67 on the piston cylinder bottom valve assembly 26 in the lower piston chamber 74; Damping function through the normal open hole produces damping force, and this damping force is the main damping force of vibration damper compression stroke.
Big stroke:
Along with former damper piston assembly 3 continues to move down; The fluid that flows to by pass vavle piston chamber 58 increases gradually, and bypass valve floating piston 15 constantly moves up, when bypass valve floating piston 15 contacts and pushes with compression stroke spring 13; Bypass valve floating piston 15 below oil liquid pressures increase; Cause lower piston chamber 74 pressure of vibration damper to increase, piston circulation valve spring 77 decrements increase, and the damping force that shows as vibration damper has increase slightly.Along with the decrement increase of compression stroke spring 13, the damping force of vibration damper increases slightly, and the speedup of damping force depends on the rigidity of compression stroke spring 13.Through rotation compression stroke spring fixed seat 10, compression stroke spring 13 is moved axially, thus corresponding stroke when changing damping force among a small circle and increasing.Consult Figure 21, the resistance of shock absorber when being adjustment compression stroke spring fixed seat 10 extrusions increases some adjustment characteristic.
When bypass valve floating piston 15 continues to go upward to when contacting with compression piston tappet 9; 15 motions of bypass valve floating piston stop; Bypass valve floating piston 15 belows and lower piston chamber 74 oil liquid pressures increase suddenly, and piston circulation valve spring 77 decrements also increase suddenly, when piston circulation valve spring 77 is compressed to limit position; It is maximum that the aisle spare of spring valve plate 31 belows reaches, and damping force reaches maximum value.Through rotation compression piston tappet 9, tappet push rod 34 is moved axially with respect to by pass vavle piston chamber 58, can interiorly among a small circle change the corresponding stroke of absorber damping force saltus step, and the increment of saltus step.Through certain adjustment, can make the jumping vanishing of resistance of shock absorber.Consulting Figure 22, is the resistance of shock absorber saltus step adjustment characteristic when changing tappet push rod 34 extrusions of compression piston tappet 9.
In sum, consulting Figure 23, is the damping characteristic scope of the responsive ride control shock absorber of stroke under the low speed operating mode.
The responsive ride control shock absorber high speed of stroke stretched stroke working principle:
Stretching travel:
With the increase of former damper piston assembly 3 movement velocitys, the damping force that spring valve plate 31 normal open holes and bypass valve stretching travel oil outlet 61 produce increases gradually, and the oil liquid pressure of upper piston chamber 71, intermediate cavity 72 and bypass valve floating piston top increases gradually.When pressure increased to spring valve plate 31 cracking pressures, spring valve plate 31 distortion produced the annular pass in the middle of spring valve plate 31, and circulation area increases, and fluid gets into lower piston chamber 74 through passage, produces damping force.The size of this damping force depends on the rigidity of spring valve plate 31.This moment, the damping function of stretching travel low speed valve was very little, and all by spring valve plate 31 decisions, promptly vibration damper high speed stretched stroke damping characteristic is non-adjustable for the damping force characteristic of vibration damper size stroke.
Compression stroke:
With the increase of former damper piston assembly 3 movement velocitys, piston cylinder base compression valve block 67 normal open holes and bypass valve compression stroke 53 damping forces that produce of portalling increase gradually, and the oil liquid pressure of lower piston chamber 74 and bypass valve floating piston 15 belows increases gradually.When piston cavity 74 pressure are increased to the compression valve cracking pressure instantly, 67 distortion of piston cylinder base compression valve block, and produce the annular pass between the piston cylinder bottom valve body 68, fluid gets into shoe cream room 75 down through passage, produces main damping force.The size of this damping force depends on the rigidity of piston cylinder base compression valve block 67.This moment, the damping function of compression stroke low speed valve was very little, and all by 67 decisions of piston cylinder base compression valve block, promptly vibration damper high speed lower compression stroke damping characteristic is non-adjustable for the damping force characteristic of vibration damper size stroke.

Claims (8)

1. the responsive ride control shock absorber of a stroke; Comprise telescopic shock absorber; It is characterized in that; The responsive ride control shock absorber of described stroke also comprises parallelly connected bypass valve, and described parallelly connected bypass valve comprises stretching one-way valve fixing bolt (7), stretching check valve sheet (8), by-pass valve body (12), bypass valve floating piston (15) floating piston ring (16), compression check valve sheet (24), compression one-way valve fixing bolt (25), compression bypass valve system (80) and stretching bypass valve system (81);
Stretching check valve sheet (8) adopts stretching one-way valve fixing bolt (7) to be installed on the stretching one-way valve fixed bolt hole (55) that is positioned at 4 bypass valve stretching travel ostiums (54) neutral position; The left side contact of the unidirectional valve pocket of stretching (56) in stretching check valve sheet (8) and the by-pass valve body (12) is connected; Compression check valve sheet (24) adopts compression one-way valve fixing bolt (25) to be installed on the compression one-way valve fixed bolt hole (60) that is positioned at 4 bypass valve compression stroke ostiums (62) neutral position; The left side of the unidirectional valve pocket of compression (59) in compression check valve sheet (24) and the by-pass valve body (12) contacts and to be connected; Compression bypass valve system (80) is connected with the compression bypass valve opening of upper end, by pass vavle piston chamber (58) in the by-pass valve body (12) through screw thread; Stretching bypass valve system (81) is connected with the stretching bypass valve opening of lower end, by pass vavle piston chamber (58) in the by-pass valve body (12) through screw thread; Bypass valve floating piston (15) is installed in the by pass vavle piston chamber (58) between compression bypass valve system (80) and the stretching bypass valve system (81) to being slidingly connected; Floating piston ring (16) is installed in the floating piston ring fixed groove (84) on the bypass valve floating piston (15), the rotational axis conllinear in compression bypass valve system (80), stretching bypass valve system (81), floating piston (15) and by pass vavle piston chamber (58).
2. according to the responsive ride control shock absorber of the described stroke of claim 1; It is characterized in that; Described by-pass valve body (12) is the housing class formation spare that the cuboid by the cylindrical body in left side and right side links into an integrated entity, and is processed with coaxial ladder hole from top to bottom on the cylindrical central axis in left side, and first sector hole is the middle cylinder hole; And formed the dome ring body between the inner cylindrical surface in the external cylindrical surface of middle cylinder hole coaxial line and middle cylinder hole; Second section is the piston cylinder lumen pore, and the 3rd and the 5th sector hole is called as upper piston cylinder hole and lower piston cylinder hole, and upper piston cylinder hole is identical with lower piston cylinder bore dia; The 4th sector hole is called as compression piston cylinder lumen pore; The 6th sector hole is to form down with piston cylinder (6) that the compression stroke oil storage cylinder of oil storage cylinder communicated cavity (64) is communicated with lumen pore, the 7th sector hole be called be used to locate under the vibration damper fixing ear assembly (27) on fixing earhole, the 8th sector hole is called and is used to connect under the vibration damper the fixedly following fixedly earhole of ear assembly (27);
Be processed with the by pass vavle piston chamber (58) parallel in the cuboid of by-pass valve body (12) right side with the left circles column axis; By pass vavle piston chamber (58) intermediate section is the minimum columniform floating piston lumen pore of diameter; The upper end of floating piston lumen pore is connected with and is used for and last interior threaded hole that compression bypass valve system (80) is connected; The lower end of floating piston lumen pore is connected with and is used for the following interior threaded hole that is connected with stretching bypass valve system (81); The arranged outside of the last interior threaded hole of floating piston lumen pore upper end has compression bypass valve opening, and the arranged outside of the following interior threaded hole of floating piston lumen pore lower end has stretching bypass valve opening;
Be processed with a series of holes between floating piston lumen pore in the by pass vavle piston chamber (58) and the left circles cylinder endoporus from top to bottom: between floating piston lumen pore and piston cylinder lumen pore, be provided with the bypass valve compression stroke oil outlet (53) that is communicated with both; The right-hand member of bypass valve compression stroke oil outlet (53) below is processed with the unidirectional valve pocket (56) that stretches; The stretch left side of unidirectional valve pocket (56) is provided with the stretching one-way valve fixed bolt hole (55) of coaxial line, is to be uniformly distributed with 4 bypass valve stretching travel ostiums (54) that the piston cylinder lumen pore is connected with the unidirectional valve pocket of stretching (56) that structure is identical on the circumference at center with its axis promptly around the stretching one-way valve fixed bolt hole (55); Be provided with the bypass valve stretching travel oil outlet (61) that is communicated with both between the lower end of floating piston lumen pore and the bypass valve compression stroke communicated cavity (63); The right-hand member of bypass valve stretching travel oil outlet (61) top is processed with compression unidirectional valve pocket (59); Compress unidirectional valve pocket (59) left side and be provided with coaxial compression one-way valve fixed bolt hole (60), around the compression one-way valve fixed bolt hole (60) promptly with its axis be uniformly distributed with on the circumference at center 4 structures identical with bypass valve compression stroke communicated cavity (63) with compress the bypass valve compression stroke ostiums (62) that unidirectional valve pocket (59) is connected.
3. according to the responsive ride control shock absorber of the described stroke of claim 1; It is characterized in that described compression bypass valve system (80) comprises compression piston tappet (9), compression stroke spring fixed seat (10), compression stroke low speed valve body (11), compression stroke spring (13), pressure spring fixed base seal ring (78), compression low speed valve body sealing ring (79) and compression tappet seal ring (83);
Compression stroke low speed valve body (11) is installed among the compression bypass valve opening on the by-pass valve body (12) to being threaded; Compression low speed valve body sealing ring (79) is installed between the two; Compression stroke spring fixed seat (10) is installed among the compression stroke low speed valve body (11) to being threaded; Pressure spring fixed base seal ring (78) is installed between the two; The lower end of compression stroke spring fixed seat (10) is equipped with compression stroke spring (13), and compression piston tappet (9) is installed among the compression stroke spring fixed seat (10) to being threaded, and compression tappet seal ring (83) is installed between the two.
4. according to the responsive ride control shock absorber of the described stroke of claim 1, it is characterized in that described compression bypass valve system (80) is that (81) structure is identical with the stretching bypass valve; Described stretching bypass valve system (81) comprises stretching travel spring (17), stretching travel piston tappet (18), stretching travel spring fixed seat (19), stretching travel low speed valve body (20), stretching low speed valve body sealing ring (21), extension spring fixed base seal ring (22) and stretching tappet seal ring (23);
Stretching travel low speed valve body (20) is installed among the stretching bypass valve opening on the by-pass valve body (12) to being threaded; Stretching low speed valve body sealing ring (21) is installed between the two; Stretching travel spring fixed seat (19) is installed among the stretching travel low speed valve body (20) to being threaded; Extension spring fixed base seal ring (22) is installed between the two; The upper end of stretching travel spring fixed seat (19) is equipped with stretching travel spring (17), and stretching travel piston tappet (18) is installed among the stretching travel spring fixed seat (19) to being threaded, and stretching tappet seal ring (23) is installed between the two.
5. according to the responsive ride control shock absorber of the described stroke of claim 3; It is characterized in that; Described compression piston tappet (9) is the identical bar class formation spare of structure with stretching travel piston tappet (18); The left end of compression piston tappet (9) is processed with columniform tappet push rod (34); The right-hand member of tappet push rod (34) is connected with the screw rod that is processed with tappet screw thread (35), and the right side that is processed with the screw rod of tappet screw thread (35) is processed with tappet limited ring (36), and the right side of tappet limited ring (36) is processed with tappet seal ring fixed groove (37); The right side of tappet seal ring fixed groove (37) is provided with tappet spanner (38), and tappet spanner (38) right-hand member is processed with tappet U-groove bevel (39).
6. according to the responsive ride control shock absorber of the described stroke of claim 3; It is characterized in that; Described compression stroke spring fixed seat (10) is the identical cylinder class formation spare of structure with stretching travel spring fixed seat (19); The left end of compression stroke spring fixed seat (10) is the cylindrical body that play the guiding role; Cylindrical right-hand member is connected with the threaded circular cylinder that is processed with spring fixed seat screw thread (42); The low order end of compression stroke spring fixed seat (10) is processed with the spring fixed seat spanner (45) of hexagon, is processed with on threaded circular cylinder and the cylndrical surface between the spring fixed seat spanner (45) of spring fixed seat screw thread (42) and is processed with the spring fixed seat seal ring fixed groove (43) that is used for fixing extension spring fixed base seal ring (22);
Compression stroke spring fixed seat (10) left end cylindrical body center is processed with spring lock chamber (40); Spring lock chamber (40) is made up of the arc-shaped slot of an interior cylindrical hole and diameter mounting spring bigger than cylindrical hole; The right-hand member of spring lock chamber (40) is connected with coaxial piston tappet pilot hole (41); The right-hand member of piston tappet pilot hole (41) is connected with interior threaded hole, and the right-hand member of interior threaded hole is connected with piston tappet closed hole (44).
7. according to the responsive ride control shock absorber of the described stroke of claim 3; It is characterized in that; Described compression stroke low speed valve body (11) is the identical cylinder of a structure class formation spare with stretching travel low speed valve body (20); Compression stroke low speed valve body (11) be processed with low speed valve rod (51) bottom; Low speed valve rod (51) upper end is connected with the cylindrical body that is processed with low speed valve body screw thread (50); The top of compression stroke low speed valve body (11) is processed with the low speed valve body spanner (48) of hexagon, is processed with on cylindrical body and the cylndrical surface between the low speed valve body spanner (48) of low speed valve body screw thread (50) and is processed with the low speed valve body sealing ring fixed groove (49) that is used for fixing compression low speed valve body sealing ring (79); The center of compression stroke low speed valve body (11) lower end is processed with spring fixed seat pilot hole (46) vertically, and the upper end of spring fixed seat pilot hole (46) is connected with interior threaded hole, and the upper end of interior threaded hole is processed with spring fixed seat closed hole (47).
8. according to the responsive ride control shock absorber of the described stroke of claim 1; It is characterized in that described telescopic shock absorber comprises under former damper piston up stroke limiting stopper (1), middle cylinder retaining ring (2), former damper piston assembly (3), oil storage cylinder (4), middle cylinder (5), piston cylinder (6), piston cylinder bottom valve assembly (26) and the vibration damper fixedly ear assembly (27);
Former damper piston up stroke limiting stopper (1) is sleeved in the former damper piston assembly (3) to become to be slidingly matched on the piston rod (85); Former damper piston up stroke limiting stopper (1) is connected with the upper-end surface and the inner cylindrical surface contact of oil storage cylinder (4) upper end inner chamber; The central through bore Spielpassung of the intermediate section of former damper piston up stroke limiting stopper (1) and middle cylinder retaining ring (2); The lower end of middle cylinder retaining ring (2) is inserted and is become contact to connect in the endoporus on the middle cylinder (5) that is positioned at oil storage cylinder (4) inner chamber; The lower end of former damper piston up stroke limiting stopper (1) is inserted and is become contact to connect in the endoporus on the piston cylinder (6) that is positioned at middle cylinder (5) inner chamber; Piston body (82) in the former damper piston assembly (3) is slidingly connected with the endoporus of piston cylinder (6); Become transition fit in the upper piston cylinder hole that by-pass valve body (12) is inserted in the lower end of piston cylinder (6) and the lower piston cylinder hole; The lower end of oil storage cylinder (4) is sleeved on the dome ring body of by-pass valve body (12) upper end; The lower end of middle cylinder (5) is inserted and is become transition fit to connect in the middle cylinder hole on the by-pass valve body (12); The external cylindrical surface of piston cylinder bottom valve body (68) upper end in the piston cylinder bottom valve assembly (26) is connected with the contact of piston cylinder (6) lower end endoporus; Fixedly the following fixedly earhole of the upper end of the oil storage cylinder lower end cap (69) of ear assembly (27) through wherein and by-pass valve body (12) lower end is equipped and adopt welding manner to fix under the vibration damper, the fixing rotational axis conllinear of the oil storage cylinder lower end cap (69) in the ear assembly (27) under former damper piston up stroke limiting stopper (1), oil storage cylinder (4), middle cylinder retaining ring (2), middle cylinder (5), piston cylinder (6), former damper piston assembly (3), piston cylinder bottom valve assembly (26) and the vibration damper.
CN2012102296735A 2012-07-04 2012-07-04 Stroke sensitive damping adjustable shock absorber Expired - Fee Related CN102748422B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103950350A (en) * 2014-03-14 2014-07-30 吉林大学 Lightweight magnesium-aluminum alloy assembled wheel
CN107035811A (en) * 2017-06-26 2017-08-11 吉林大学 Load self-adapting type stroke correlation mutative damp shock absorber
CN108974333A (en) * 2018-08-17 2018-12-11 中航飞机起落架有限责任公司 A kind of full liquid shock absorber and compensation device
CN109642632A (en) * 2016-08-30 2019-04-16 Ｋｙｂ株式会社 Half active shock
CN110410447A (en) * 2019-08-09 2019-11-05 南阳威奥斯图车辆减振器有限公司 A kind of damper oiling clamping cylinder device
CN114607723A (en) * 2022-05-11 2022-06-10 江苏科曼赛特减振器有限公司 High-low speed compression damping adjustable valve system assembly structure
CN114645920A (en) * 2020-12-21 2022-06-21 比亚迪股份有限公司 Damper, shock absorber and car

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101434792B1 (en) 2013-05-07 2014-08-26 주식회사 샘코 Door damper of aircraft

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6264604A (en) * 1985-09-15 1987-03-23 Showa Seisakusho:Kk Bottom hit preventive device for wheel suspension shock absorber
JP2002227906A (en) * 2001-01-31 2002-08-14 Kayaba Ind Co Ltd Oil cushion unit
CN1871452A (en) * 2003-09-17 2006-11-29 坦尼科汽车操作有限公司 Stroke dependent bypass
US20070000743A1 (en) * 2005-06-29 2007-01-04 Showa Corporation Adjustable damping force hydraulic shock absorber
CN102032308A (en) * 2010-11-19 2011-04-27 重庆大学 Variable damping absorber
CN202646521U (en) * 2012-07-04 2013-01-02 吉林大学 Journey sensitive damping adjustable damper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6264604A (en) * 1985-09-15 1987-03-23 Showa Seisakusho:Kk Bottom hit preventive device for wheel suspension shock absorber
JP2002227906A (en) * 2001-01-31 2002-08-14 Kayaba Ind Co Ltd Oil cushion unit
CN1871452A (en) * 2003-09-17 2006-11-29 坦尼科汽车操作有限公司 Stroke dependent bypass
US20070000743A1 (en) * 2005-06-29 2007-01-04 Showa Corporation Adjustable damping force hydraulic shock absorber
CN102032308A (en) * 2010-11-19 2011-04-27 重庆大学 Variable damping absorber
CN202646521U (en) * 2012-07-04 2013-01-02 吉林大学 Journey sensitive damping adjustable damper

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘淑艳 等: "节流式磁流体阻尼可调减震器的试验研究", 《汽车工程》 *
李幼德 等: "汽车减振器弹簧阀片变形模型的研究", 《汽车工程》 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103950350A (en) * 2014-03-14 2014-07-30 吉林大学 Lightweight magnesium-aluminum alloy assembled wheel
CN103950350B (en) * 2014-03-14 2016-06-08 吉林大学 A kind of lightweight assembly type wheel
CN109642632A (en) * 2016-08-30 2019-04-16 Ｋｙｂ株式会社 Half active shock
CN107035811A (en) * 2017-06-26 2017-08-11 吉林大学 Load self-adapting type stroke correlation mutative damp shock absorber
CN108974333A (en) * 2018-08-17 2018-12-11 中航飞机起落架有限责任公司 A kind of full liquid shock absorber and compensation device
CN110410447A (en) * 2019-08-09 2019-11-05 南阳威奥斯图车辆减振器有限公司 A kind of damper oiling clamping cylinder device
CN110410447B (en) * 2019-08-09 2024-01-09 南阳威奥斯图车辆减振器有限公司 Oil injection clamping oil cylinder device of shock absorber
CN114645920A (en) * 2020-12-21 2022-06-21 比亚迪股份有限公司 Damper, shock absorber and car
CN114645920B (en) * 2020-12-21 2023-05-05 比亚迪股份有限公司 Damper, shock absorber and car
CN114607723A (en) * 2022-05-11 2022-06-10 江苏科曼赛特减振器有限公司 High-low speed compression damping adjustable valve system assembly structure
CN114607723B (en) * 2022-05-11 2022-07-08 江苏科曼赛特减振器有限公司 High-low speed compression damping adjustable valve system assembly structure

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