CN110701232A - Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle - Google Patents
Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle Download PDFInfo
- Publication number
- CN110701232A CN110701232A CN201910933810.5A CN201910933810A CN110701232A CN 110701232 A CN110701232 A CN 110701232A CN 201910933810 A CN201910933810 A CN 201910933810A CN 110701232 A CN110701232 A CN 110701232A
- Authority
- CN
- China
- Prior art keywords
- oil
- damping
- valve
- communicated
- way
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013016 damping Methods 0.000 title claims abstract description 152
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 74
- 230000035939 shock Effects 0.000 title claims abstract description 69
- 239000003921 oil Substances 0.000 claims abstract description 406
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 66
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 230000006835 compression Effects 0.000 claims abstract description 62
- 238000007906 compression Methods 0.000 claims abstract description 62
- 239000000428 dust Substances 0.000 claims description 26
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 9
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000013017 mechanical damping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/185—Bitubular units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/38—Covers for protection or appearance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a double-oil-way electric control variable damping semi-active oil pressure shock absorber for a railway vehicle, which comprises an oil cylinder assembly, a piston assembly and a damping electromagnetic adjusting valve assembly, wherein the oil cylinder assembly is connected with the piston assembly through a hydraulic oil pipe; the oil cylinder assembly comprises a working cylinder and an oil storage cylinder; the piston assembly comprises a piston with two ends not communicated with an oil way, and the piston divides the working cylinder into a stretching oil cavity and a compression oil cavity; the damping electromagnetic adjusting valve assembly comprises a stretching oil way reversing electromagnetic valve and a compressing oil way reversing electromagnetic valve, a plurality of liquid outlet ends are arranged on the stretching oil way reversing electromagnetic valve and the compressing oil way reversing electromagnetic valve, the liquid outlet ends are communicated to the oil storage barrel through different oil ways, and a damping valve is arranged on each oil way communicated with the liquid outlet ends. The shock absorber can adopt the electromagnetic control switch to convert different damping characteristics according to different application speeds or different running conditions of the vehicle, can also convert damping coefficients of the shock absorber before and after unloading, and is simple in structure adjustment, safe and reliable.
Description
Technical Field
The invention relates to the field of oil pressure shock absorbers, in particular to a double-oil-way electric control variable damping semi-active oil pressure shock absorber for a railway vehicle.
Background
Along with the development of crossing railways and the rise of urban rail transit, the demand of rolling stock and subways is increased rapidly, the oil pressure shock absorber is used as an important part for attenuating the vibration of the rolling stock and the subways and improving the running stability and the comfort of the rolling stock and the subways, the demand is increased day by day, meanwhile, the performance requirement on the shock absorber product is higher, and the higher requirement is also put forward on the assembly of the shock absorber product.
The traditional oil pressure shock absorber for the railway vehicle is a passive shock absorber, passively outputs a certain damping characteristic at a certain stretching and compressing speed, and the damping characteristic cannot be changed according to different road conditions, the running speed of the vehicle and other conditions. Meanwhile, most of the conventional oil pressure absorbers with semi-active characteristics, which carry out different damping characteristic conversion according to different application conditions of vehicles, structurally belong to a single-oil-way structure, and the dynamic damping characteristic and the dynamic stiffness characteristic of the oil pressure absorber with the single-oil-way structure generate the damping characteristic through a single damping valve in a stretching and compressing mode. Secondly, the semi-active shock absorber used by the existing vehicle is complex in structure, and particularly when the vehicle runs at a high speed, certain reliability cannot be maintained, so that a semi-active shock absorber system which is simple in structure and reliable in operation is needed. Finally, as the operation time of the vehicle is prolonged, the wheel tread and the wheel rail contact surface are abraded, so that the wheel rail contact geometric parameters are changed, the stability of the vehicle is reduced, the stability of the vehicle has to be ensured by turning the wheel and grinding the wheel rail, and if the damping coefficient of the shock absorber is changed to prolong the grinding time of the turning wheel and the wheel rail, the service life and the maintenance economy of the vehicle can be greatly influenced.
Disclosure of Invention
In order to solve the above problems, the present invention provides a dual-oil-path electrically controlled variable damping semi-active oil pressure damper for a railway vehicle, which can convert different damping characteristics by using an electromagnetic control switch according to different application speeds or different running conditions of the vehicle, and can convert damping coefficients of the damper before and after unloading, and meanwhile, has a simple structure adjustment and is relatively safe and reliable.
In order to achieve the above purpose, the invention adopts the technical scheme that:
a double-oil-way electric control variable damping semi-active oil pressure shock absorber for a railway vehicle comprises an oil cylinder assembly, a piston assembly and a damping electromagnetic adjusting valve assembly, wherein the piston assembly and the damping electromagnetic adjusting valve assembly are arranged on the oil cylinder assembly;
the oil cylinder assembly comprises a working cylinder and an oil storage cylinder, hydraulic oil is filled in the working cylinder and the oil storage cylinder, and the oil storage cylinder is installed at the outer end of the working cylinder;
the piston assembly comprises a piston with two ends not communicated with oil passages, and the piston is slidably arranged in the working cylinder and divides the working cylinder into a stretching oil cavity and a compression oil cavity;
the damping electromagnetic adjusting valve assembly comprises a stretching oil way reversing electromagnetic valve and a compressing oil way reversing electromagnetic valve, liquid inlet ends of the stretching oil way reversing electromagnetic valve and the compressing oil way reversing electromagnetic valve are communicated to the stretching oil cavity and the compressing oil cavity respectively, a plurality of liquid outlet ends are arranged on the stretching oil way reversing electromagnetic valve and the compressing oil way reversing electromagnetic valve respectively, the liquid outlet ends are communicated to the oil storage barrel through different oil ways, and a damping valve is arranged on each oil way communicated with the liquid outlet ends.
In the invention, two ends of the piston are not communicated with oil passages, namely, hydraulic oil in the stretching oil cavity and the compression oil cavity can not enter the opposite side through the piston and can only enter the oil storage cylinder through the external oil passages. The invention installs the extension oil path reversing solenoid valve and the compression oil path reversing solenoid valve on the oil path leading to the oil storage cylinder of the extension oil chamber and the compression oil chamber, and the solenoid valve is provided with a plurality of liquid outlet ends, which can be converted by the control solenoid valve to control the communication of the liquid outlet ends of the solenoid valve, so that the hydraulic oil on the liquid outlet end communicating oil path enters the oil storage cylinder after being combined by the damping valve. The electric control mode is adopted for adjustment, the adjustment is simple, and the reliability is high.
Furthermore, each oil path communicated with the liquid outlet ends of the stretching oil path reversing solenoid valve and the compression oil path reversing solenoid valve is provided with at least two damping valves which are communicated in a one-way mode and connected in parallel, so that the dynamic damping characteristic and the dynamic rigidity characteristic of the oil pressure shock absorber have a symmetrical characteristic, the running safety of a high-speed motor car in the use process is ensured, and the problem of potential safety hazards caused by the fact that the dynamic damping characteristic and the dynamic rigidity characteristic of the shock absorber have an asymmetrical characteristic due to the fact that the compression oil chamber and the stretching oil chamber are communicated through one single damping valve in the prior art is solved.
Further, the oil cylinder assembly further comprises a guide seat, a base body and an oil pipe; the guide seat and the base body are respectively installed at two ends of the working cylinder, two ends of the oil pipe are respectively connected with the guide seat and the base body, and the oil pipe is located between the working cylinder and the oil storage cylinder. The base body is used for supporting the shock absorber, and the guide seat is used for guiding and sealing the piston rod so that the piston, the inner end of which is attached to the inner wall of the working cylinder, slides in the working cylinder along the inner side wall of the working cylinder; the oil pipe is used for connecting the guide seat and the base body.
Further, a guide seat stretching oil way is arranged in the guide seat, a liquid inlet end of the guide seat stretching oil way is communicated with the stretching oil cavity, and a liquid outlet end of the guide seat stretching oil way is communicated with the oil through pipe; a tensile hydraulic oil output oil path and a compression hydraulic oil output oil path are arranged in the base body; the tensile hydraulic oil output oil way is communicated with the oil through pipe, and the compression hydraulic oil output oil way is communicated with the compression oil cavity.
According to the invention, the guide seat stretching oil path and the stretching hydraulic oil output oil path are arranged, so that hydraulic oil in the stretching oil cavity can conveniently enter the oil storage cylinder after passing through the guide seat stretching oil path, the oil through pipe, the stretching hydraulic oil output oil path, the stretching oil path reversing electromagnetic valve and the damping valve; the hydraulic oil output oil way is arranged, so that hydraulic oil in the compressed oil cavity can conveniently enter the oil storage cylinder after passing through the compressed hydraulic oil output oil way, the compressed oil way reversing solenoid valve and the damping valve.
Furthermore, the damping electromagnetic adjusting valve assembly also comprises a transfer block arranged on the base body, and the tensile oil way reversing electromagnetic valve and the compression oil way reversing electromagnetic valve are arranged on the transfer block; and a switching block oil path is arranged in the switching block, the liquid inlet end of the switching block oil path is communicated with the tensile hydraulic oil output oil path and the compression hydraulic oil output oil path, and the liquid outlet end of the switching block oil path is communicated with the tensile oil path reversing electromagnetic valve and the compression oil path reversing electromagnetic valve.
According to the hydraulic oil path reversing device, the switching block is used for installing the oil path reversing electromagnetic valve, the switching block oil path is arranged in the switching block and is used for connecting the tensile hydraulic oil output oil path and the compression hydraulic oil output oil path and conveying the conveyed hydraulic oil to the oil path reversing electromagnetic valve, and the oil path reversing electromagnetic valve is used for switching and distributing the hydraulic oil to different liquid outlet ends for adjustment.
Furthermore, a plurality of damping valve oil ways which are in one-to-one correspondence and communication with a plurality of liquid outlet ends of the stretching oil way reversing electromagnetic valve and the compression oil way reversing electromagnetic valve are also arranged in the base body; the damping valve oil circuit is provided with at least two one-way communicated and parallel damping valves, the liquid outlet end of the damping valve oil circuit is communicated with an oil liquid return oil circuit, and the oil liquid return oil circuit is communicated to the oil storage cylinder. The damping valve oil circuit is connected with the output end of the oil circuit reversing electromagnetic valve and is internally provided with a damping valve assembly, the hydraulic oil can generate damping force when passing through so as to achieve the vibration damping effect, and the hydraulic oil in the oil circuit finally returns to the oil storage cylinder through the oil liquid return oil circuit.
Further, the piston assembly further comprises a piston rod, a dust cover and a dust cover seat; the piston rod is arranged in the guide seat in a sliding penetrating mode, the inner end of the piston rod is connected with the piston, and the outer end of the piston rod is fixedly connected with the dust cover seat; the dust cover is located the piston rod outside, and a pot head of dust cover is established the oil storage section of thick bamboo outside, other end fixed connection the dust cover seat. The piston rod is used for transmitting the vibration of the vehicle to the piston; the dust cover is used for protecting the sliding piston assembly from dust.
Furthermore, the dustproof cover seat and the outer end of the base body are both connected with mounting seats, and rubber nodes are arranged in the mounting seats and used for mounting the vibration absorber on a railway vehicle needing vibration reduction.
Further, the stretching oil cavity and the compression oil cavity are communicated with the oil storage cylinder through a one-way valve plate. By arranging the one-way valve plate, when the shock absorber does stretching movement, oil in the oil storage cylinder enters the compressed oil cavity through the one-way valve plate so as to make up for hydraulic oil required to be compensated due to the increase of the volume of the compressed oil cavity; during compression movement, oil in the oil storage cylinder enters the stretching oil cavity through the one-way valve plate so as to make up for hydraulic oil required to be compensated due to the increase of the volume of the stretching oil cavity.
Furthermore, the damping valve comprises a damping valve, a valve cover on one side of the damping valve and a compression spring arranged on the other side of the damping valve in a propping mode, so that hydraulic oil can circulate conveniently to generate damping force.
The invention has the beneficial effects that:
according to the oil pressure shock absorber, the oil way reversing solenoid valves are arranged on the oil ways of the hydraulic oil in the stretching oil cavity and the compression oil cavity to the oil storage cylinder, and the solenoid valves are provided with a plurality of liquid outlet ends, so that the oil pressure shock absorber can perform conversion of different damping characteristics according to different application speeds or different running conditions of a vehicle; after the pre-adjustment is finished, signals are received and appropriately converted only through an externally related oil way reversing solenoid valve in the using process, and different damping characteristics of two or more oil pressure shock absorbers can be achieved.
The oil pressure damper is adjusted in an electromagnetic control mode, and the electromagnetic control mode can still be adjusted according to electromagnetic signals after the damper is equipped, so that heavy physical mechanical manual operation is avoided; the damping characteristic is controlled by adopting a mechanical damping valve, and after the damping characteristic is adjusted, the electromagnetic valve only performs oil circuit conversion of different damping characteristics, so that the shock absorber is safer and more reliable compared with a semi-active shock absorber which adjusts the damping force by the electromagnetic valve, and can keep certain reliability when a vehicle runs at high speed.
The oil pressure shock absorber adopted by the invention can change the magnitude of unloading damping force, namely change the damping coefficient after unloading; the damping characteristic of the shock absorber before unloading, namely the damping coefficient before unloading can be converted, the damping coefficient of the shock absorber is changed, the grinding time of the turning wheel and the wheel rail is prolonged, and great influence is generated on the service life and the maintenance economy of the vehicle.
The hydraulic shock absorber is characterized in that the hydraulic shock absorber is composed of at least two damping valves which are communicated in a one-way mode and connected in parallel, and the oil circuit communicated with the liquid outlet end of the oil circuit reversing solenoid valve is provided with a dynamic damping characteristic and a dynamic rigidity characteristic which are symmetrical, so that the driving safety of a high-speed motor car in the use process is ensured, and the problem of potential safety hazards caused by the fact that the dynamic damping characteristic and the dynamic rigidity characteristic of the shock absorber are asymmetrical due to the fact that a compression oil cavity and a stretching oil cavity are communicated through a single damping valve in the prior art is solved.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a schematic view of the outer end of the present invention;
FIG. 3 is a cross-sectional view of the present invention taken along the length of the cylinder at the base body;
FIG. 4 is a cross-sectional view of the present invention taken perpendicular to the length of the cylinder at the solenoid valve for reversing the direction of the oil path;
FIG. 5 is a cross-sectional view of the present invention taken perpendicular to the length of the cylinder at the solenoid valve for reversing the compression oil path;
FIG. 6 is a cross-sectional view of the present invention taken along the length of the cylinder at the location of two tensile oil path directional solenoid valves and at the location of two compression oil path directional solenoid valves;
FIG. 7 is an exploded view of the damper valve assembly of the present invention;
FIG. 8 is a diagram showing the variation of the damping characteristics of a conventional variable damping shock absorber;
FIG. 9 is a graph showing the variation of the damping characteristics of the shock absorber in accordance with the present invention;
in the figure: 1. an oil cylinder assembly; 11. a working cylinder; 111. stretching the oil cavity; 112. a compression oil chamber; 12. an oil storage cylinder; 13. a guide seat; 131. the guide seat stretches the oil way; 14. a base body; 141. stretching a hydraulic oil output oil way; 142. compressing a hydraulic oil output oil path; 143. a damping valve oil path; 144. the oil returns to the oil circuit; 15. an oil pipe is communicated; 16. a one-way valve plate; 2. a piston assembly; 21. a piston; 22. a piston rod; 23. a dust cover; 24. a dust cover seat; 3. a damping solenoid trim valve assembly; 31. a stretching oil way reversing electromagnetic valve; 32. compressing the oil way reversing solenoid valve; 33. a damping valve; 331. a damping valve; 332. a valve housing; 333. a compression spring; 34. a transfer block; 4. a mounting seat; 5. and (4) rubber nodes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
A double-oil-way electric control variable damping semi-active oil pressure shock absorber for a railway vehicle comprises an oil cylinder assembly 1, a piston assembly 2 and a damping electromagnetic adjusting valve assembly 3, wherein the piston assembly 2 and the damping electromagnetic adjusting valve assembly 3 are installed on the oil cylinder assembly 1;
the oil cylinder assembly 1 comprises a working cylinder 11 and an oil storage cylinder 12, hydraulic oil is filled in the working cylinder 11 and the oil storage cylinder 12, and the oil storage cylinder 12 is installed at the outer end of the working cylinder 11;
the piston assembly 2 comprises a piston 21 with two ends not communicated with oil passages, the piston 21 is slidably arranged in the working cylinder 11 and divides the working cylinder 11 into a stretching oil chamber 111 and a compression oil chamber 112;
the damping electromagnetic adjusting valve assembly 3 comprises a stretching oil way reversing electromagnetic valve 31 and a compressing oil way reversing electromagnetic valve 32, liquid inlet ends of the stretching oil way reversing electromagnetic valve 31 and the compressing oil way reversing electromagnetic valve 32 are respectively communicated to a stretching oil cavity 111 and a compressing oil cavity 112, a plurality of liquid outlet ends are respectively arranged on the stretching oil way reversing electromagnetic valve 31 and the compressing oil way reversing electromagnetic valve 32 and communicated to the oil storage barrel 12 through different oil ways, and at least two damping valve assemblies 33 which are communicated in a one-way mode and connected in parallel are respectively arranged on the oil way communicated with each liquid outlet end.
In the present embodiment, since the two ends of the piston 21 do not have oil passages, the hydraulic oil in the tension oil chamber 111 and the compression oil chamber 112 can only enter the oil storage cylinder 12 through the oil passage outside the working cylinder 11, that is, the oil passage in which the tension oil passage switching solenoid valve 31 and the compression oil passage switching solenoid valve 32 are installed enters the oil storage cylinder 12. The oil way composed of different damping valves 33 can be communicated and installed by adjusting different positions of the stretching oil way reversing electromagnetic valve 31 and the compressing oil way reversing electromagnetic valve 32, and the opening and closing of the oil way are controlled, so that the shock absorber outputs a certain damping characteristic to meet the requirement of vehicle operation. The damping valve assemblies 33 are arranged in parallel, so that the dynamic damping characteristic and the dynamic stiffness characteristic of the oil pressure shock absorber have symmetrical characteristics, and the running safety of the high-speed motor car in the using process is ensured.
Example 2
The present embodiment is further improved on the basis of embodiment 1, as shown in fig. 1 and 2, the cylinder assembly 1 further includes a guide base 13, a base body 14 and a through oil pipe 15; the guide seat 13 and the base body 14 are respectively installed at two ends of the working cylinder 11, two ends of the oil pipe 15 are respectively connected with the guide seat 13 and the base body 14, and the oil pipe 15 is located between the working cylinder 11 and the oil storage cylinder 12.
A guide seat stretching oil way 131 is arranged in the guide seat 13, the liquid inlet end of the guide seat stretching oil way 131 is communicated with the stretching oil cavity 111, and the liquid outlet end of the guide seat stretching oil way is communicated with the oil through pipe 15; a tensile hydraulic oil output oil path 141 and a compression hydraulic oil output oil path 142 are arranged in the base body 14; the tensile hydraulic oil output oil path 141 is communicated with the oil through pipe 15, and the compression hydraulic oil output oil path 142 is communicated with the compression oil chamber 112.
In particular use, the guide seat 13 is used for guiding and sealing; the base body 14 is used for supporting the shock absorber; the oil pipe 15 is used for connecting the guide seat 13 and the base body 14 and conveying hydraulic oil in the stretching oil cavity 111; the guide seat stretching oil path 131 and the stretching hydraulic oil output oil path 141 are used for conveying hydraulic oil in the stretching oil cavity 111 when the shock absorber stretches; the compressed hydraulic oil output oil passage 142 is used for conveying hydraulic oil in the compression oil chamber 112 when the shock absorber is compressed.
Example 3
In this embodiment, a further improvement is made on the basis of embodiment 2, as shown in fig. 1 to 6, the damping solenoid adjusting valve assembly 3 further includes a junction block 34 installed on the base body 14, and the extension solenoid valve 31 and the compression solenoid valve 32 are installed on the junction block 34; the switching block 34 is internally provided with a switching block oil path, the liquid inlet end of the switching block oil path is communicated with the tensile hydraulic oil output oil path 141 and the compression hydraulic oil output oil path 142, and the liquid outlet end is communicated with the tensile oil path reversing electromagnetic valve 31 and the compression oil path reversing electromagnetic valve 32.
The base body 14 is also internally provided with a plurality of damping valve oil paths 143 which are in one-to-one correspondence and communication with a plurality of liquid outlet ends of the stretching oil path reversing solenoid valve 31 and the compression oil path reversing solenoid valve 32; at least two damping valve assemblies 33 which are communicated in one way and are connected in parallel are arranged on the damping valve oil way 143, the liquid outlet end of the damping valve oil way 143 is communicated with an oil liquid return oil way 144, and the oil liquid return oil way 144 is communicated with the oil storage cylinder 12.
In this embodiment, the oil path of the switching block 34 is used for communicating the hydraulic oil extending output oil path 141 and the hydraulic oil compressing output oil path 142, the switching block 34 is at least provided with two mutually independent switching block oil paths, one switching block oil path is used for communicating the hydraulic oil extending output oil path 141 and the liquid inlet end of the hydraulic oil extending path reversing solenoid valve 31, and the other switching block oil path is used for communicating the hydraulic oil compressing output oil path 142 and the liquid inlet end of the hydraulic oil compressing path reversing solenoid valve 32, so that the oil inlet of the hydraulic oil path reversing solenoid valve is facilitated.
During stretching movement, hydraulic oil in the stretching oil chamber 111 enters the oil storage cylinder through the guide seat stretching oil path 131, the oil pipe 15, the stretching hydraulic oil output oil path 141, the adapter block oil path, the stretching oil path reversing electromagnetic valve 31, the damping valve oil path 143, the damping valve assembly 33 and the oil return oil path 144. During the compression movement, the hydraulic oil in the compression oil chamber 112 enters the oil storage cylinder through the compressed hydraulic oil output oil path 142, the adapter block oil path, the compression oil path reversing solenoid valve 32, the damping valve oil path 143, the damping valve assembly 33 and the oil return oil path 144.
Example 4
This embodiment is further improved on the basis of embodiment 3, and as shown in fig. 1 and 2, the piston assembly 2 further includes a piston rod 22, a dust cover 23, and a dust cover seat 24; the piston rod 22 is slidably arranged in the guide seat 13 in a penetrating manner, the inner end of the piston rod 22 is connected with the piston 21, and the outer end of the piston rod 22 is fixedly connected with the dust cover seat 24; the dust cover 23 is located outside the piston rod 22, one end of the dust cover 23 is sleeved outside the oil storage cylinder 12, the other end of the dust cover 23 is fixedly connected with the dust cover seat 24, and the sliding piston assembly 2 is protected from dust through the dust cover 23.
The dustproof cover seat 24 and the outer end of the base body 14 are connected with a mounting seat 4, a rubber node 5 is arranged in the mounting seat 4, and the shock absorber is mounted on a railway vehicle needing damping through the rubber node 5.
The stretching oil chamber 111 and the compression oil chamber 112 are both communicated with the oil storage cylinder 12 through a one-way valve plate 16, so that the stretching oil chamber 111 and the compression oil chamber 112 are communicated with the oil storage cylinder 12 at the outer end in a one-way mode, and oil liquid required to be compensated is compensated when the volume of the stretching oil chamber 111 or the compression oil chamber 112 is increased.
The damping valve assembly 33 includes a damping valve 331, a valve housing 332 on one side of the damping valve 331, and a compression spring 333 supported on the other side of the damping valve 331, as shown in fig. 7. In this embodiment, the damping valve 331 is a conventional damping valve in the prior art, and the damping valve 331 is provided with an unloading hole and a long-section through-flow hole, and the long-section through-flow hole is used for communicating cavities on two sides of the damping valve assembly 33; the unloading hole is used for communicating with the through hole after the damping valve 331 moves, so that the shock absorber is unloaded.
For a better understanding of the present invention, the following is a complete description of the working principle of the present invention:
when the shock absorber performs stretching movement, the piston rod 22 drives the piston 21 to perform stretching movement, and because the two ends of the piston 21 are not communicated with oil passages, the pressure of the stretching oil chamber 111 of the shock absorber is increased, hydraulic oil enters the stretching oil passage 131 of the guide seat and enters the stretching hydraulic oil output oil passage 141 in the bottom seat body 14 along with the oil through pipe 15; then enters a transfer block oil path, enters the stretching oil path reversing solenoid valve 31 through the transfer block oil path, is distributed into different damping valve oil paths 143 according to different position states of the stretching oil path reversing solenoid valve 31, enters an oil return oil path 144 after throttling unloading and unloading are carried out by two groups of damping valves in the damping valve oil paths 143, and is finally conveyed into the oil storage cylinder 12. Meanwhile, the volume of the compression oil chamber 112 of the shock absorber is increased, and the oil liquid in the oil cylinder 12 enters the compensation oil liquid in the compression oil chamber 112 through the check valve plate.
Similarly, when the shock absorber performs compression movement, the piston rod 22 drives the piston 21 to perform compression movement, because the two ends of the piston 21 are not communicated with oil passages, the pressure of the compression oil chamber 112 of the shock absorber increases, hydraulic oil enters the compressed hydraulic oil output oil passage 142 in the base body 14, then enters the switching block oil passage, enters the compression oil passage reversing solenoid valve 32 through the switching block oil passage, is distributed into different damping valve oil passages 143 according to different position states of the compression oil passage reversing solenoid valve 32, and enters the oil return oil passage 144 after being throttled and unloaded by two groups of damping valves in the damping valve oil passage 143, and finally is conveyed into the oil storage cylinder 12. Meanwhile, the volume of the stretching oil cavity 111 of the shock absorber is increased, and the oil liquid in the oil storage cylinder 12 enters the compensation oil liquid in the stretching oil cavity 111 through the check valve plate.
In this embodiment, a stretch oil path reversing solenoid valve 31 and a compression oil path reversing solenoid valve 32 are provided, each solenoid valve is provided with two liquid outlet ends, and the damping valve assemblies 33 installed on the damping valve oil path 143 connected to each liquid outlet end have different specifications, that is, the output damping forces are different in magnitude. Assuming that two liquid outlet ends of the stretching oil path reversing solenoid valve 31 are A and B, and two liquid outlet ends of the compressing oil path reversing solenoid valve 32 are a and B, one mode of communicating oil paths Aa, Ab, Ba or Bb can be selected, and the stretching oil path reversing solenoid valve 31 and the compressing oil path reversing solenoid valve 32 are arranged, so that the shock absorber generates various different damping characteristics.
For example, when the liquid outlet ends of the group Aa are communicated, the group Bb is not communicated, hydraulic oil enters the damping valve assemblies 33 respectively connected with the two liquid outlet ends through the liquid outlet ends of the group Aa, and the shock absorber generates the required damping characteristic 1. On the contrary, the group Aa is not communicated, the group Bb is communicated, the hydraulic oil enters the damping valve assembly 33 respectively connected with the two groups of liquid outlet ends through the group Bb liquid outlet end, and the shock absorber generates the required damping characteristic 2.
The mode generates two groups of different damping characteristics, so that the shock absorber can generate at least two different damping characteristics, and the oil pressure shock absorber can convert different damping characteristics according to different application speeds or different running conditions of a vehicle. Meanwhile, the structure is simple to adjust, is adjusted in an electromagnetic control mode, is safe and reliable, and can keep certain reliability when the vehicle runs at high speed.
In the implementation, two groups of parallel damping valve assemblies 33 are mounted on each damping valve oil path 143, so that the dynamic damping characteristic and the dynamic stiffness characteristic of the oil pressure shock absorber have symmetrical characteristics, the running safety of the high-speed motor car in the use process is ensured, and the problem of potential safety hazards caused by the fact that the dynamic damping characteristic and the dynamic stiffness characteristic of the shock absorber have asymmetrical characteristics due to the fact that the compression oil chamber and the stretching oil chamber are communicated through a single damping valve in the prior art is solved.
As shown in fig. 8 and 9, fig. 8 is a damping characteristic variation diagram of the conventional variable damping vibration absorber, and fig. 9 is a damping characteristic variation diagram of the present variable damping vibration absorber. In the figure, the abscissa represents the excitation speed in m/s, and the ordinate represents the damping force in N; f1 represents a first force-velocity curve, and F2 represents a second force-velocity curve. In the figure, the front half part of the curve bending part shows the damping characteristic of the shock absorber before unloading, and the rear half part shows the damping characteristic of the shock absorber after unloading. As can be seen from fig. 9, the controllable damping semi-active shock absorber can change not only the first section force-velocity curve but also the second section force-velocity curve, so that the shock absorber of the present invention can change not only the magnitude of the unloading damping force, i.e. the damping coefficient after unloading; the different output ends of the electromagnetic valve can be selected for communication, the damping coefficient before unloading of the shock absorber is converted, the grinding time of the turning wheel and the wheel rail is prolonged, the service life of the vehicle is prolonged, the maintenance frequency is reduced, and great influence is generated on the service life and the maintenance economy of the vehicle.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a semi-initiative hydraulic shock absorber of automatically controlled variable damping of two oil circuits for rail vehicle which characterized in that: the damping oil cylinder comprises an oil cylinder assembly (1), and a piston assembly (2) and a damping electromagnetic adjusting valve assembly (3) which are arranged on the oil cylinder assembly (1);
the oil cylinder assembly (1) comprises a working cylinder (11) and an oil storage cylinder (12), hydraulic oil is filled in the working cylinder (11) and the oil storage cylinder (12), and the oil storage cylinder (12) is installed at the outer end of the working cylinder (11);
the piston assembly (2) comprises a piston (21) with two ends not communicated with an oil way, the piston (21) is installed inside the working cylinder (11) in a sliding mode, and the working cylinder (11) is divided into a stretching oil cavity (111) and a compression oil cavity (112);
the damping electromagnetic adjusting valve component (3) comprises a stretching oil way reversing electromagnetic valve (31) and a compressing oil way reversing electromagnetic valve (32), liquid inlet ends of the stretching oil way reversing electromagnetic valve (31) and the compressing oil way reversing electromagnetic valve (32) are respectively communicated to the stretching oil cavity (111) and the compressing oil cavity (112), a plurality of liquid outlet ends are respectively arranged on the stretching oil way reversing electromagnetic valve (31) and the compressing oil way reversing electromagnetic valve (32), the plurality of liquid outlet ends are communicated to the oil storage barrel (12) through different oil ways, and a damping valve assembly (33) is arranged on each oil way communicated with the liquid outlet ends.
2. The dual oil circuit electrically controlled variable damping semi-active hydraulic shock absorber for railway vehicle as claimed in claim 1, wherein: and each oil path communicated with the liquid outlet ends of the stretching oil path reversing electromagnetic valve (31) and the compression oil path reversing electromagnetic valve (32) is provided with at least two damping valve assemblies (33) which are communicated in a one-way mode and connected in parallel.
3. The dual oil circuit electrically controlled variable damping semi-active oil pressure shock absorber for railway vehicles according to claim 2, characterized in that: the oil cylinder assembly (1) further comprises a guide seat (13), a base body (14) and an oil pipe (15);
guide holder (13) and the base body (14) are installed respectively working cylinder (11) both ends, the both ends of oil pipe (15) are connected respectively guide holder (13) and the base body (14), just oil pipe (15) are located between working cylinder (11) and oil storage section of thick bamboo (12).
4. The dual oil circuit electrically controlled variable damping semi-active oil pressure shock absorber for railway vehicles according to claim 3, wherein: a guide seat stretching oil way (131) is arranged in the guide seat (13), the liquid inlet end of the guide seat stretching oil way (131) is communicated with the stretching oil cavity (111), and the liquid outlet end of the guide seat stretching oil way is communicated with the oil through pipe (15);
a tensile hydraulic oil output oil path (141) and a compression hydraulic oil output oil path (142) are arranged in the base body (14); the tensile hydraulic oil output oil way (141) is communicated with the oil through pipe (15), and the compression hydraulic oil output oil way (142) is communicated with the compression oil cavity (112).
5. The dual oil circuit electrically controlled variable damping semi-active oil pressure shock absorber for railway vehicles according to claim 4, wherein: the damping electromagnetic adjusting valve component (3) further comprises a switching block (34) arranged on the base body (14), and the tensile oil way reversing electromagnetic valve (31) and the compression oil way reversing electromagnetic valve (32) are arranged on the switching block (34);
and a switching block oil way is arranged in the switching block (34), the liquid inlet end of the switching block oil way is communicated with the tensile hydraulic oil output oil way (141) and the compression hydraulic oil output oil way (142), and the liquid outlet end of the switching block oil way is communicated with the tensile oil way reversing electromagnetic valve (31) and the compression oil way reversing electromagnetic valve (32).
6. The dual oil circuit electrically controlled variable damping semi-active oil pressure shock absorber for railway vehicles according to claim 5, wherein: a plurality of damping valve oil paths (143) which are in one-to-one correspondence and communication with a plurality of liquid outlet ends of the stretching oil path reversing electromagnetic valve (31) and the compression oil path reversing electromagnetic valve (32) are also arranged in the base body (14);
the damping valve oil way (143) is provided with the at least two damping valve assemblies (33) which are communicated in one way and are connected in parallel, the liquid outlet end of the damping valve oil way (143) is communicated with an oil liquid return oil way (144), and the oil liquid return oil way (144) is communicated to the oil storage cylinder (12).
7. The dual oil circuit electrically controlled variable damping semi-active oil pressure shock absorber for railway vehicles according to claim 3, wherein: the piston assembly (2) further comprises a piston rod (22), a dust cover (23) and a dust cover seat (24);
the piston rod (22) penetrates through the guide seat (13) in a sliding mode, the inner end of the piston rod is connected with the piston (21), and the outer end of the piston rod (22) is fixedly connected with the dust cover seat (24); the dust cover (23) is located outside the piston rod (22), one end of the dust cover (23) is sleeved outside the oil storage cylinder (12), and the other end of the dust cover is fixedly connected with the dust cover seat (24).
8. The dual oil circuit electrically controlled variable damping semi-active hydraulic shock absorber for railway vehicle as claimed in claim 7, wherein: the dustproof cover base (24) and the outer end of the base body (14) are connected with a mounting base (4), and rubber nodes (5) are arranged in the mounting base (4).
9. The dual oil circuit electrically controlled variable damping semi-active hydraulic shock absorber for railway vehicle as claimed in claim 1, wherein: the stretching oil cavity (111) and the compression oil cavity (112) are communicated with the oil storage cylinder (12) through a one-way valve plate (16).
10. The dual oil circuit electrically controlled variable damping semi-active hydraulic shock absorber for railway vehicle as claimed in claim 1, wherein: the damping valve assembly (33) comprises a damping valve (331), a valve cover (332) on one side of the damping valve (331) and a compression spring (333) arranged on the other side of the damping valve (331) in a propping mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933810.5A CN110701232A (en) | 2019-09-29 | 2019-09-29 | Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933810.5A CN110701232A (en) | 2019-09-29 | 2019-09-29 | Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110701232A true CN110701232A (en) | 2020-01-17 |
Family
ID=69198061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910933810.5A Pending CN110701232A (en) | 2019-09-29 | 2019-09-29 | Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110701232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117536946A (en) * | 2023-12-29 | 2024-02-09 | 浙江路得坦摩汽车部件股份有限公司 | Damping linear change oil hydraulic cylinder with buffering function |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61290249A (en) * | 1985-06-19 | 1986-12-20 | Kayaba Ind Co Ltd | Oil hydraulic shock absorber |
| US5004079A (en) * | 1989-02-10 | 1991-04-02 | Lord Corporation | Semi-active damper valve means and method |
| JPH1096440A (en) * | 1996-09-20 | 1998-04-14 | Kayaba Ind Co Ltd | Load amount sensing type shock absorber |
| JPH1096441A (en) * | 1996-09-20 | 1998-04-14 | Kayaba Ind Co Ltd | Loading amount-sensing type shock absorber |
| CN1699781A (en) * | 2005-06-24 | 2005-11-23 | 浙江大学 | Vehicle hydraulic damper with actively adjustable damping for semiactive suspension |
| CN201317237Y (en) * | 2008-11-19 | 2009-09-30 | 北京理工大学 | Adjustable oil-gas suspension with controllable throttle area and three-level damping |
| CN201380583Y (en) * | 2009-04-13 | 2010-01-13 | 浙江圣邦机械有限公司 | Mould-opening back pressure component of injection molding machine |
| CN102678810A (en) * | 2012-06-01 | 2012-09-19 | 吉林大学 | High/low speed bidirectional damping adjustable mechanical damper |
| CN202612463U (en) * | 2012-06-01 | 2012-12-19 | 吉林大学 | High and low speed two-way damping adjustable mechanical-type shock absorber |
| US20130147205A1 (en) * | 2010-06-16 | 2013-06-13 | Levant Power Corporation | Integrated energy generating damper |
| CN203009683U (en) * | 2012-12-07 | 2013-06-19 | 常州朗锐凯迩必减振技术有限公司 | Serpentine-resistant damper |
| CN105240442A (en) * | 2015-11-03 | 2016-01-13 | 株洲时代装备技术有限责任公司 | Oil damper |
| CN106678252A (en) * | 2016-12-27 | 2017-05-17 | 华南理工大学 | Operating method of automobile shock absorber with capillary tubes connected in series and in parallel and with variable system inherent frequency |
| US20180266510A1 (en) * | 2017-03-17 | 2018-09-20 | Mando Corporation | Vehicular shock absorber and method for controlling same |
| CN110107634A (en) * | 2019-06-11 | 2019-08-09 | 湖南联诚轨道装备有限公司 | A kind of new double circulation oil-pressure damper |
| CN210978327U (en) * | 2019-09-29 | 2020-07-10 | 成都博仕腾科技有限公司 | Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle |
-
2019
- 2019-09-29 CN CN201910933810.5A patent/CN110701232A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61290249A (en) * | 1985-06-19 | 1986-12-20 | Kayaba Ind Co Ltd | Oil hydraulic shock absorber |
| US5004079A (en) * | 1989-02-10 | 1991-04-02 | Lord Corporation | Semi-active damper valve means and method |
| JPH1096440A (en) * | 1996-09-20 | 1998-04-14 | Kayaba Ind Co Ltd | Load amount sensing type shock absorber |
| JPH1096441A (en) * | 1996-09-20 | 1998-04-14 | Kayaba Ind Co Ltd | Loading amount-sensing type shock absorber |
| CN1699781A (en) * | 2005-06-24 | 2005-11-23 | 浙江大学 | Vehicle hydraulic damper with actively adjustable damping for semiactive suspension |
| CN201317237Y (en) * | 2008-11-19 | 2009-09-30 | 北京理工大学 | Adjustable oil-gas suspension with controllable throttle area and three-level damping |
| CN201380583Y (en) * | 2009-04-13 | 2010-01-13 | 浙江圣邦机械有限公司 | Mould-opening back pressure component of injection molding machine |
| US20130147205A1 (en) * | 2010-06-16 | 2013-06-13 | Levant Power Corporation | Integrated energy generating damper |
| CN202612463U (en) * | 2012-06-01 | 2012-12-19 | 吉林大学 | High and low speed two-way damping adjustable mechanical-type shock absorber |
| CN102678810A (en) * | 2012-06-01 | 2012-09-19 | 吉林大学 | High/low speed bidirectional damping adjustable mechanical damper |
| CN203009683U (en) * | 2012-12-07 | 2013-06-19 | 常州朗锐凯迩必减振技术有限公司 | Serpentine-resistant damper |
| CN105240442A (en) * | 2015-11-03 | 2016-01-13 | 株洲时代装备技术有限责任公司 | Oil damper |
| CN106678252A (en) * | 2016-12-27 | 2017-05-17 | 华南理工大学 | Operating method of automobile shock absorber with capillary tubes connected in series and in parallel and with variable system inherent frequency |
| US20180266510A1 (en) * | 2017-03-17 | 2018-09-20 | Mando Corporation | Vehicular shock absorber and method for controlling same |
| CN110107634A (en) * | 2019-06-11 | 2019-08-09 | 湖南联诚轨道装备有限公司 | A kind of new double circulation oil-pressure damper |
| CN210978327U (en) * | 2019-09-29 | 2020-07-10 | 成都博仕腾科技有限公司 | Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle |
Non-Patent Citations (2)
| Title |
|---|
| 周小智: "铁道车辆抗蛇行减振器力学模型及动态特性研究", 《中国优秀硕士论文电子期刊 工程科技Ⅱ辑》, no. 09, 15 September 2018 (2018-09-15) * |
| 芦存浩: "阻尼连续可调半主动悬架控制策略仿真研究", 《中国优秀硕士论文电子期刊 工程科技Ⅱ辑》, no. 06, 15 June 2018 (2018-06-15) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117536946A (en) * | 2023-12-29 | 2024-02-09 | 浙江路得坦摩汽车部件股份有限公司 | Damping linear change oil hydraulic cylinder with buffering function |
| CN117536946B (en) * | 2023-12-29 | 2024-04-30 | 浙江路得坦摩汽车部件股份有限公司 | Damping linear change oil hydraulic cylinder with buffering function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11511592B2 (en) | Suspension system for a vehicle | |
| US20140353097A1 (en) | Frequency sensitive type shock absorber | |
| CN101349316B (en) | Sensing load damp-changing or controllable sensing load damp-changing shock mitigation system | |
| CN103991352A (en) | Wheel suspension unit with stabilizer | |
| CN112648320A (en) | High-frequency response damping-adjustable semi-active shock absorber | |
| CN210715706U (en) | Variable damping semi-active oil pressure shock absorber with measurable damping displacement speed | |
| CN100441901C (en) | Variable damping shock absorber | |
| CN210978327U (en) | Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle | |
| CN210978329U (en) | Double-oil-way mechanical control variable-damping passive oil pressure shock absorber for railway vehicle | |
| CN110701232A (en) | Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle | |
| CN204526714U (en) | A kind of road self-adaptive hydraulic active suspension system | |
| CN110686035A (en) | Double-oil-way mechanical control variable-damping passive oil pressure shock absorber for railway vehicle | |
| CN201317237Y (en) | Adjustable oil-gas suspension with controllable throttle area and three-level damping | |
| CN210661175U (en) | Double-oil-way switch type variable-damping semi-active oil pressure shock absorber for railway vehicle | |
| CN105134855A (en) | Novel oil-gas damper | |
| CN104709025A (en) | Self-road-adaption hydraulic active suspension system | |
| CN207673772U (en) | A kind of pneumatic cylinder | |
| CN213870882U (en) | Compression buffer structure of shock absorber | |
| CN107989947B (en) | Multi-piston damping adjustable shock absorber mechanism | |
| CN201385558Y (en) | Valve opening pressure controllable type three-level damper adjustable oil-gas suspension | |
| CN110425245A (en) | A kind of rolling stock half active oil-pressure damper of double oil circuits switching regulator adaptive damping | |
| CN112644237A (en) | Vehicle suspension system | |
| CN216691981U (en) | Steering damper structure of railway vehicle bogie | |
| CN108312798B (en) | Air suspension and vehicle using same | |
| CN220435309U (en) | Oil pressure vibration damper for railway vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |