CN107143598A - Oil-pressure damper - Google Patents
Oil-pressure damper Download PDFInfo
- Publication number
- CN107143598A CN107143598A CN201710508201.6A CN201710508201A CN107143598A CN 107143598 A CN107143598 A CN 107143598A CN 201710508201 A CN201710508201 A CN 201710508201A CN 107143598 A CN107143598 A CN 107143598A
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- Prior art keywords
- oil
- valve
- cylinder
- working cylinder
- storage cylinder
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Classifications
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- 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
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
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- 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
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- 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
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention proposes a kind of oil-pressure damper, including oil storage cylinder, working cylinder is arranged with the oil storage cylinder, hydraulic oil is filled with the oil storage cylinder and working cylinder, one end seal of the oil storage cylinder and working cylinder is provided with guide cover, the opposite other end envelope of the working cylinder is provided with bottom valve pedestal, and the bottom valve unit that hydraulic oil in the negotiable oil storage cylinder and working cylinder is provided with gas, the bottom valve pedestal is further filled between the oil storage cylinder and working cylinder.The oil-pressure damper of the present invention, without to install the volume that compensation air bag increases oil storage cylinder, making the structure of hydraulic pressure oil snubber compacter, and saves production cost and the set-up time of compensation air bag and mounting assembly, improves market competition advantage.
Description
Technical field
Subtract the invention belongs to rail locomotive vehicle oil-pressure damper technical field, more particularly to a kind of non-gasbag-type oil pressure
Shake device.
Background technology
Oil-pressure damper is the part of railway locomotive bogie suspension, can effectively prevent vehicle from occurring side
Put, shake the head, the generation of the dangerous situation such as hunting, while the impact between wheel and rail can be mitigated, improve passenger and take
Comfortableness.In the course of work, the piston unit of oil-pressure damper is moved back and forth at work, in piston rod intrusion hydraulic oil
Volume also changes therewith, so as to cause the change of hydraulic fluid pressure.In order to which volume becomes in compensating piston bar intrusion hydraulic oil
Hydraulic fluid pressure changes caused by changing, and is typically provided with compensating air bag in the oil storage cylinder of oil-pressure damper, compensates in air bag and fill
There are air or inert gas, it is flat to hydraulic fluid pressure when being moved by compensating the contraction or expansion of air bag come compensating piston bar
The change of weighing apparatus.
The U of Chinese patent CN 203348408 disclose a kind of oil-pressure damper for having and compensating air bag, including positioned at middle part
Pressure cylinder and peripheral ring around oil storage cylinder, pressure cylinder connect with oil storage cylinder by being arranged at the bottom valve of bottom, pressure cylinder and stores up
The port envelope of oil cylinder is set piston rod is worn in guide cover, and pressure cylinder, and piston rod is fixedly connected with piston, have on piston orifice valve and
Compensation air bag is symmetrical arranged at spring, the periphery wall of pressure cylinder.The utility model has the oil-pressure damper of compensation air bag, in order to
Compensation air bag is smoothly installed, inevitably needs to increase the size of oil storage cylinder, so as to cause oil-pressure damper volume larger, is tied
Structure is not compact, and cost is higher；Meanwhile, compensation air bag intrusion is in fluid, and extension over time is inevitably resulted from
Gas is leaked in fluid, can not only influence the compensation effect to fluid volume, and gas is mixed into fluid can influence oil pressure
The linear effectiveness in vibration suppression of shock absorber.
Therefore, a kind of oil-pressure damper of compact conformation is designed, effectively reduction volume and manufacturing cost, while avoiding gas
Body leakage problem, is very important to those skilled in the art.
The content of the invention
The present invention proposes a kind of oil pressure of compact conformation for the not compact technical problem of above-mentioned oil-pressure damper structure
Shock absorber, effectively reduction volume and manufacturing cost, and avoid gas leakage problem.
In order to achieve the above object, the technical solution adopted by the present invention is：
Working cylinder, the oil storage cylinder and working cylinder are arranged with a kind of oil-pressure damper, including oil storage cylinder, the oil storage cylinder
In be filled with hydraulic oil, an end seal of the oil storage cylinder and working cylinder is provided with guide cover, and the opposite other end of the working cylinder is sealed
Provided with bottom valve pedestal, further it is filled with the oil storage cylinder on gas, the bottom valve pedestal and is provided with the negotiable oil storage
The bottom valve unit of hydraulic oil in cylinder and working cylinder.
Preferably, be provided with the working cylinder can in the working cylinder reciprocating piston unit, the work
Filling in unit includes being provided with the valve body group of negotiable piston only both sides hydraulic oil on piston only, the piston only
Gas is provided between the negotiable piston only and bottom valve unit on part, the valve component to the piston only with leading
To the fixed orifice between lid.
Preferably, the oil-pressure damper further comprises that gas is extremely between the negotiable piston only and guide cover
Exhaust unit between the oil storage cylinder and working cylinder, the exhaust unit includes the conduction hole being arranged on the guide cover,
The conduction hole is connected with the working cylinder, and air discharge duct has further been radially arranged on the guide cover, the air discharge duct
One end is connected with the conduction hole, and the other end of the air discharge duct is connected with the oil storage cylinder.
Preferably, the conduction hole is circumferentially distributed on the guide cover along the guide cover, the exhaust unit enters
One step includes the annular groove being connected with the conduction hole, and one end of the air discharge duct is connected with the annular groove.
Preferably, the bottom valve unit includes the hydraulic oil between the oil storage cylinder and working cylinder being flowed into the work
Make to be provided with spill port on the oil return valve in cylinder, the bottom valve pedestal, the oil return valve is arranged in the spill port, described time
Oilhole center line is located at the side of the bottom valve base central line.
Preferably, the bottom valve unit further comprise hydraulic oil in the working cylinder being flowed into the oil storage cylinder and
Unloading hole is provided with unloading valve between working cylinder, the bottom valve pedestal, the unloading valve is arranged in the unloading hole.
Preferably, the bottom valve pedestal is further provided with may be guided the hydraulic oil of the unloading valve outflow described in
The guidance set that spill port side is flowed between the oil storage cylinder and working cylinder, the guidance set includes being arranged at the bottom valve
First guide plate of base bottom surface, first guide plate is synthetic into arc, and the opening of the arc is set towards the oil return valve
Put, first guide plate is located at the unloading valve and deviates from the oil return valve side.
Preferably, the guidance set further comprises the second guide plate, second guide plate is led with described first
It is connected to the bottom of plate and is fitted with the oil storage cylinder bottom surface, is set on second guide plate with the oil return valve relevant position
There is U-shaped opening.
Preferably, be connected with the 3rd guide plate at the U-shaped opening, the 3rd guide plate further with the bottom valve
Pedestal, the first guide plate are connected together to hydraulic oil channel, and the 3rd guide plate is set with the unloading valve corresponding position
Have and the unloading valve hydraulic oil may be guided flow to outlet to the oil return valve.
Compared with prior art, advantages and positive effects of the present invention are：
1st, oil-pressure damper of the invention, it fills gas in the oil storage cylinder, and the negotiable oil storage cylinder and
The bottom valve unit of hydraulic oil in working cylinder, when the volume that the piston rod is invaded in the working cylinder hydraulic oil changes,
By the gas expansion or compression so that the hydraulic oil circulates in the oil storage cylinder and working cylinder, to compensate the work
The change of the working cylinder hydraulic oil volume caused by stopper rod motion, without compensating the body that air bag increases oil storage cylinder to install
Product, makes the structure of hydraulic pressure oil snubber compacter, and saves production cost and the installation of compensation air bag and mounting assembly
Time, improve market competition advantage；Gas leakage problem in compensation air bag is avoided simultaneously.
2nd, oil-pressure damper of the invention, it, which is provided with, to drain into the oil storage cylinder and work by the gas being mixed into working cylinder
Make the exhaust unit between cylinder, it is to avoid work as caused by gas in the oil storage cylinder entered in working cylinder by oil return valve
" air pocket " phenomenon, improves the stability of oil-pressure damper of the present invention.
3rd, oil-pressure damper of the invention, its oil return centerline hole is located at the side of the bottom valve base central line, and returns
Oilhole center line is located at the distance between described bottom valve base central line and meets the oil return when oil-pressure damper laterally works
Valve is invaded in hydraulic oil completely, it is to avoid the gas in oil storage cylinder is entered in working cylinder by oil return valve, improves oil of the invention
Stability when pressure damper laterally works.
4th, the hydraulic oil that bootable unloading valve outflow is provided with oil-pressure damper of the invention, its bottom valve pedestal flows to institute
State the guidance set of oil return valve side, it is ensured that when oil-pressure damper is laterally disposed, the hydraulic oil of unloading valve outflow and oil storage
The hydraulic oil mixing in cylinder bottom portion, it is to avoid possibility with gas mixing, is further increased for oil-pressure damper of the present invention
Stability when laterally working.
Brief description of the drawings
Fig. 1 is the structural representation that oil-pressure damper hydraulic oil of the present invention is flowed to；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is the structural representation of gas flow when oil-pressure damper of the present invention is vented；
Fig. 4 is oil-pressure damper exhaust unit structure schematic diagram of the present invention；
Fig. 5 is one of oil-pressure damper bottom valve base construction schematic diagram of the present invention；
Fig. 6 is the two of oil-pressure damper bottom valve base construction schematic diagram of the present invention；
Fig. 7 is the three of oil-pressure damper bottom valve base construction schematic diagram of the present invention.
Above in each figure：1st, oil storage cylinder；2nd, working cylinder；3rd, guide cover；4th, piston unit；41st, piston only；42nd, piston
Bar；43rd, valve component；5th, bottom valve pedestal；51st, spill port；52nd, unloading hole；53rd, guidance set；531st, the first guide plate；532、
Second guide plate；533rd, the 3rd guide plate；534th, outlet；6th, bottom valve unit；61st, oil return valve；611st, oil return valve body；612nd, return
Fuel tap bar；613rd, oil return vavle shelf；614th, oil return valve nut；615th, oil return valve spring；62nd, unloading valve；621st, off-load valve pocket；622、
Off-load valve element；623rd, unloading port；624th, unloading valve shoulder；625th, off-load valve spring；7th, exhaust unit；71st, conduction hole；72nd, ring
Groove；73rd, air discharge duct；8th, hydraulic oil；9th, gas.
Embodiment
Below, the present invention is specifically described by exemplary embodiment.It should be appreciated, however, that not entering one
In the case of step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiment
In.
In the description of the invention, it is necessary to which explanation, when oil-pressure damper is vertically placed, the side towards guide cover is
Top, the side towards bottom valve unit is lower section；The orientation of instruction such as term " interior ", " outer ", " on ", " under ", "front", "rear" or
Position relationship is, based on position relationship shown in the drawings, to be for only for ease of the description present invention and simplify description, rather than indicate
Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For limitation of the present invention.In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating
Or imply relative importance.
As shown in Figure 1 and Figure 2, a kind of oil-pressure damper, including oil storage cylinder 1, working cylinder 2, guide cover 3, the and of piston unit 4
Bottom valve pedestal 5, the oil storage cylinder 1 and working cylinder 2 are drum, and the coaxial sleeve of the working cylinder 2 is located at the oil storage cylinder 1
In, hydraulic oil 8 is filled with the oil storage cylinder 1 and working cylinder 2, the envelope of guide cover 3 is located at the oil storage cylinder 1 and working cylinder
2 one end simultaneously seals the end of the oil storage cylinder 1 and working cylinder 2；The envelope of bottom valve pedestal 5 is located at the phase of the working cylinder 2
Sealed to the other end and by the end of the working cylinder 2, so that the hydraulic oil 8 in the working cylinder 2 and oil storage cylinder 1 is isolated；Institute
State piston unit 4 to be arranged in the working cylinder 1 and can move back and forth in the working cylinder 1, the piston unit 4 includes living
Body 41 is filled in, the internal surface gaps of the lateral surface of the piston only 41 and the working cylinder 2 coordinate, gap, which coordinates, at this meets
There is piston rod 42 along the working cylinder 2 is axially arranged on the requirement of closing oil path, the piston only 41, the piston rod 42 is worn
In the guide cover 3 and can be in the guide cover 3 axially movable, the piston rod 42 and the gap of guide cover 3
With the sealing of merga pass fluid with closing oil path；Negotiable piston only both sides hydraulic pressure is provided with the piston only 41
The valve component 43 of oil 8, when the piston rod 42 drives the piston only 41 to be moved towards the guide cover 3, the work
Fill in the pressure of hydraulic oil 8 increase between body 41 and guide cover 3, the hydraulic oil pressure between the piston only 41 and guide cover 3
Power can open oil circuit of the valve component 43 by guide cover to bottom valve unit, so that the hydraulic oil 8 is from the piston sheet
Flowed between body 41 and guide cover 3 before the piston only 41 and bottom valve unit 6, and then realize unloading function, when the work
Stopper rod 42 drive the piston only 41 towards the bottom valve unit 6 move when, between the piston only 41 and bottom valve unit 6
The increase of the pressure of hydraulic oil 8, the pressure of hydraulic oil 8 can open the valve component between the piston only 41 and bottom valve unit 6
The oil circuit by bottom valve unit 6 to guide cover 3 so that the hydraulic oil 8 is between the piston only 41 and bottom valve unit
Flow between the piston only 41 and guide cover 3, and then realize unloading function.
It should be noted that during the piston rod 42 is moved, the piston rod 42 is invaded in the hydraulic oil 8
Volume also therewith reduce or increase, so as to cause the stereomutation of hydraulic oil 8 in the working cylinder 2, in order to compensate because of institute
State piston rod 42 and invade the stereomutation of hydraulic oil 8 in the working cylinder 2 caused by Volume Changes in the hydraulic oil 8, it is described
Further it is filled with oil storage cylinder 1 on gas 9, the bottom valve pedestal 5 and is further provided with the negotiable working cylinder 2 and oil storage
The bottom valve assembly 6 of hydraulic oil 8 in cylinder 1, when the piston rod 42 is moved towards guide cover 3, the piston rod 42 invades described
Volume in the hydraulic oil 8 of working cylinder 2 is reduced, so that the pressure of hydraulic oil 8 is reduced in the working cylinder 2, the oil storage cylinder 1 and work
The oil circuit by oil storage cylinder 1 to working cylinder 2 in bottom valve unit 6 can be opened by making the pressure of hydraulic oil 8 between cylinder 2, the oil storage
The hydraulic oil 8 that gas between cylinder 1 and working cylinder 2 can be oppressed between the oil storage cylinder 1 and working cylinder 2 passes through the bottom valve unit
6 enter in the working cylinder 2；When the piston rod 42 is moved towards bottom valve unit 6, the piston rod 42 invades the work
Volume increase in the hydraulic oil 8 of cylinder 2, so that hydraulic fluid pressure increases in the working cylinder 2, hydraulic oil 8 in the working cylinder 2
Pressure will can be opened in the bottom valve unit 6 by the oil circuit of working cylinder 2 to oil storage cylinder 1, and the hydraulic oil 8 in the working cylinder 2 leads to
The bottom valve unit 6 is crossed to flow between the oil storage cylinder 1 and working cylinder 2 and compress the gas between the oil storage cylinder 1 and working cylinder 2
Body.
The oil-pressure damper of the present invention, it fills gas 9, and negotiable institute between the oil storage cylinder 1 and working cylinder 2
The bottom valve unit 6 of hydraulic oil in oil storage cylinder 1 and working cylinder 2 is stated, when the piston rod 42 is invaded in the hydraulic oil 8 of working cylinder 2
Volume when changing, expand or compress by the gas 9 so that the hydraulic oil 8 is in the oil storage cylinder 1 and work
In cylinder 2 circulate, with compensate the piston rod 42 move caused by the pressure of 2 hydraulic oil of working cylinder 8 change, without for install
Compensation air bag and increase the volume of oil storage cylinder 1, make the structure of hydraulic pressure oil snubber compacter, and save compensation air bag and
The production cost of mounting assembly and set-up time, improve market competition advantage.
With further reference to Fig. 2, the bottom valve unit 6 includes oil return valve 61 and unloading valve 62, and the oil return valve 61 can make institute
State the hydraulic oil 8 between oil storage cylinder 1 and working cylinder 2 to flow into the working cylinder 2, the unloading valve 62 can make the working cylinder 2
In hydraulic oil 8 flow between oil storage cylinder 1 and working cylinder 2.Specifically, spill port 51, institute are provided with the bottom valve pedestal 5
State oil return valve 61 to be arranged in the spill port 51, the oil return valve 61 includes oil return valve body 611, oil return valve rod 612, oil return valve
Support 613, oil return valve nut 614 and oil return valve spring 615, the oil return valve body 611 is for circle and positioned at the bottom valve pedestal 5
Top, the oil return valve rod 612 for cylinder and axially be arranged in the spill port 51, the appearance of oil return valve rod 611
There is gap between face and the inner surface of spill port 51 to form hydraulic oil path, the oil return valve rod 612 and the bottom of oil return valve body 611
Face integrally connected, and the oil return valve rod 612 and oil return valve body 611 are perpendicular；The oil return valve support 613 is horizontally set at institute
State in spill port 51, the transverse ends of the oil return valve support 613 and the internal surface gaps of the spill port 51 coordinate, described time
Fuel tap support 613 is connected with the part inner peripheral surface of the spill port 61, so that the hydraulic oil 8 can pass through the oil return
Passage between valve support 613 and spill port 51, the oil return valve support 613 is axially arranged connecting hole, the oil return valve rod
612 are arranged in the connecting hole, and the outer surface of oil return valve rod 612 coordinates with connecting hole internal surface gaps；The oil return valve
Nut 614 is arranged at the bottom of oil return valve rod 612, and the outer surface of the oil return valve rod 612 is further equipped with oil return
Valve spring 615, the two ends of the oil return valve spring 615 are solid with the oil return valve nut 614 and the oil return valve support 613 respectively
Even, the oil return valve spring 615 is in compressive state, so that the bottom surface of oil return valve body 611 and the top of the bottom valve pedestal 5
Face pressure is tight and closes the oil circuit between the oil return valve body 611 and the bottom valve pedestal 5；When the piston rod 42 is towards described
When guide cover 3 is moved, the volume in the intrusion of piston rod 42 hydraulic oil 8 of working cylinder 2 is reduced, and the hydraulic oil 8 of working cylinder 2 is pressed
Power is reduced, and the gas 9 in the oil storage cylinder 1, which expands, makes the hydraulic oil between the oil storage cylinder 1 and working cylinder 2 oppress the oil return
Valve body 611 is moved towards guide cover 3, and the oil circuit between the oil return valve body 611 and the bottom valve pedestal 5 is opened, the oil storage
Hydraulic oil 8 between cylinder 1 and working cylinder 2 is passed sequentially through between spill port 51, the oil return valve body 611 and the bottom valve pedestal 5
Flow between the piston only 41 and bottom valve unit 6, until the hydraulic oil pressure dynamic balance in the oil storage cylinder 1 and working cylinder 2,
So as to compensate because hydraulic oil 8 is reduced and increased space between oil storage cylinder 1 and working cylinder.
Further, unloading hole 52 is provided with the bottom valve pedestal 5, the unloading valve 62 is installed on the unloading hole 52
In, the unloading valve 62 includes off-load valve pocket 621 and off-load valve element 622, the outer surface of off-load valve pocket 621 and the unloading hole
52 are connected and closing oil path, and the off-load valve pocket 621 is axially arranged through hole, and the off-load valve element 622 is arranged in the through hole
In, the outer surface of off-load valve element 622 coordinates with closing oil path with the through-hole inner surface gap, and the off-load valve element 622 is set
Blind hole is equipped with, the bottom of the blind hole, which is located on lower section, the side wall of the blind hole, has been radially arranged unloading port 623；The off-load
The bottom of valve element 622 is provided with the shoulder 624 that can be engaged with the off-load valve pocket 621, and the top surface of the shoulder is unloaded with described
The bottom surface gap of lotus valve pocket 622 coordinates with closing oil path；The bottom surface of the off-load valve element 622 is connected with the bottom valve pedestal 5
Unloading spring 625 is so that the off-load valve element 622 can move up and down；When the piston rod 42 is transported towards the bottom valve unit 6
When dynamic, the piston rod 42 invades hydraulic fluid pressure in the volume increase in the hydraulic oil 8 of working cylinder 2, the working cylinder 2 and increased
Plus, hydraulic oil is oppressed the off-load valve element 622 and transported towards the bottom valve unit 6 between the piston only 41 and bottom valve unit 6
Dynamic, the unloading port 623 is separated with the inner surface of off-load valve pocket 621, and the shoulder 624 and the bottom of off-load valve pocket 621
Part is from hydraulic oil passes sequentially through the blind hole, unloading port 623, the shoulder between the piston only 41 and bottom valve unit 6
Oil circuit is flowed between the oil storage cylinder 1 and working cylinder 2 between 624 and the bottom of off-load valve pocket 621, liquid in the oil storage cylinder 1
Oil pressure increases and compresses the gas 9, until the hydraulic oil pressure dynamic balance in the oil storage cylinder 1 and working cylinder 2, so that
Compensate because hydraulic oil 8 increases and the space of reduction in oil storage cylinder 1.
Preferably, the unloading valve 62 may be configured as one or more, to meet the different pressure of hydraulic oil 8 and stream
Amount compensation requires that, when the unloading valve 62 is set to multiple, the multiple unloading valve 62 is uniformly distributed and the oil return valve 61
Outside.
Referring to Fig. 5, when the oil-pressure damper is vertically arranged, the gas 9 in the oil storage cylinder 1 is located at because density is small
The top of the hydraulic oil 8, the piston rod 42 has not had gas 9 when being moved towards the guide cover 3 and has passed through oil return valve 61
Into in working cylinder 2；When the oil-pressure damper is laterally set, the same position of gas between the oil storage cylinder 1 and working cylinder 2
In the top of the hydraulic oil 8, in order to avoid the gas 9 is entered in the working cylinder 2 by oil return valve 61, the spill port
51 center lines are less than the center line of the bottom valve pedestal 5, and the center line of spill port 51 is less than the center line of bottom valve pedestal 5
Distance is h, and the capacity of h and hydraulic oil 8 meets the oil return valve 61 intrusion completely when the oil-pressure damper is laterally disposed
In hydraulic oil 8.
Further, referring to Fig. 6, Fig. 7, when the oil-pressure damper is laterally set, in order to ensure in the working cylinder 2
Hydraulic oil 8 by after the unloading valve 62 towards the side of the oil return valve 61 flow into the oil storage cylinder 1 and working cylinder 2 it
Between, the bottom of the bottom valve pedestal 5 is further provided with guidance set 53, and the guidance set 53 includes the first guide plate 531,
The bottom surface of first guide plate 531 and the bottom valve pedestal 5 is connected, and first guide plate 531 and the bottom valve pedestal 5
Bottom surface it is perpendicular, the outer surface of the first guide plate 531 be circular arc, the unloading valve 62 be located at first guide plate
Inside 531 circular arc, in order to avoid hydraulic oil 8 is flowed by the unloading valve 62 between the piston only 41 and bottom valve unit 6
When entering between the oil storage cylinder 1 and working cylinder 2, the gas 9 between the oil storage cylinder 1 and working cylinder 2 is mixed, and described first leads
It is more than semicircle to the arc angle of plate 531, so that hydraulic oil 8 is unloaded by described between the piston only 41 and bottom valve unit 6
After lotus valve 62, mixed in the guiding of first guide plate 531 to the hydraulic oil 8 with the bottom of oil storage cylinder 1.
With continued reference to Fig. 6, Fig. 7, in order to further increase hydraulic oil 8 that the unloading valve 62 flows through towards the oil storage cylinder
The uniformity of 1 flows, the guidance set 53 further comprises the second guide plate 532 and the 3rd guide plate 533, described
Two guide plates 532 are vertically installed in the bottom of first guide plate 531, and second guide plate 532 is to be led with described first
The circular arc being engaged to plate 531, the bottom surface of second guide plate 532 and the bottom of the oil storage cylinder 1 fit, and described
Second guide plate 532 at the corresponding position of the oil return valve 61 with being provided with U-shaped breach, and the U-shaped breach makes the hydraulic oil 8
Pass through the oil return valve 61 and unloading valve 62；The upper end of 3rd guide plate 533 is vertically installed in the bottom valve pedestal 5
Bottom, the lower end of the 3rd guide plate 533 is connected with the U-shaped breach of second guide plate 532, the 3rd guide plate
533 two ends are connected with the two ends of first guide plate 531, with the phase of unloading valve 62 on the 3rd guide plate 533
The hydraulic oil 8 that being provided with corresponding position can flow through the unloading valve 62 smoothly flows into the outlet of the oil storage cylinder 1, institute
Hydraulic oil 8 is stated between piston only 41 and bottom valve unit 6 by being flowed out after the unloading valve 62 from the outlet 534, and
3rd guide plate 533 leads the bottom for flowing downwardly into the oil storage cylinder 1, it is to avoid mixes and occurs with the gas 9 on top
" air pocket " phenomenon.
Referring to Fig. 3, Fig. 4, when the gas 9 between the oil storage cylinder 1 and working cylinder 2 is described by the oil return valve 61 entrance
After working cylinder 1, in order to which the gas 9 is discharged from the working cylinder 1, oil-pressure damper of the invention further comprises exhaust
Unit 7, the exhaust unit 7 includes conduction hole 71, annular groove 72 and air discharge duct 73, and the conduction hole 71 is axially set in described lead
To the bottom surface of lid 3, the i.e. one side towards the working cylinder 1；The annular groove 72 is arranged on the bottom surface of the guide cover 3, and with
The conduction hole 71 is connected, in order that the gas in the hydraulic oil 8 of the working cylinder 1 is uniformly discharged, the conduction hole 71 can be set
It is set to multiple, the multiple conduction hole is uniformly distributed circumferentially on the bottom surface of the guide cover 3, and the multiple conduction hole 71 is equal
Connected with the annular groove 73；The air discharge duct 73 is arranged radially in the bottom surface of the guide cover 3, one end of the air discharge duct 73
It is connected with the annular groove 72, the opposite other end of the air discharge duct 73 is connected with gas 9 between oil storage cylinder 1 and working cylinder 2；
So that the gas 9 in the working cylinder 2 is drained between oil storage cylinder 1 and working cylinder 2.
It should be noted that fixed orifice 431 is provided with the valve component 43, when the piston only 41 is produced
Trickle motion, i.e., the described insufficient pressure of hydraulic oil 8 with overcome it is described open the valve component 43 oil circuit when, the hydraulic pressure
Oil 8 can circulate to realize unloading function, the piston only 41 by fixed orifice 431 in the both sides of piston only 41
The gas 9 being mixed between bottom valve unit 6 in hydraulic oil 8 also can flow into the piston only by the fixed orifice 431
Between 41 and guide cover 3.
Specifically, during exhaust, oil-pressure damper is vertically placed, and compressing piston rod 42 makes the direction of piston only 41 downwards
The bottom valve unit 6 is moved, and makes the increase of the pressure of gas 9, the piston only 41 between the piston only 41 and bottom valve unit 6
Gas 9 is entered between the piston only 41 and guide cover 3 by the fixed orifice 431 between bottom valve unit 6；Upwards
Pull the piston rod 42 piston only 41 is moved towards the guide cover 3, the piston only 41 and guide cover 3 it
Between the pressure of gas 9 increase and enter in the multiple conduction hole 71, the gas collection in the multiple conduction hole 71 to annular groove 72
In and flowed into eventually through air discharge duct 73 between the oil storage cylinder 1 and working cylinder 2, complete exhaust work.
Claims (9)
1. it is arranged with working cylinder (2), the oil storage cylinder in a kind of oil-pressure damper, including oil storage cylinder (1), the oil storage cylinder (1)
(1) and in working cylinder (2) it is filled with hydraulic oil (8), an end seal of the oil storage cylinder (1) and working cylinder (2) is provided with guide cover
(3), the opposite other end envelope of the working cylinder (2) is provided with bottom valve pedestal (5), it is characterised in that：The oil storage cylinder (1) and work
Further it is filled between cylinder (2) on gas (9), the bottom valve pedestal (5) and is provided with the negotiable oil storage cylinder (1) and work
The bottom valve unit (6) of hydraulic oil (8) in cylinder (2).
2. oil-pressure damper according to claim 1, it is characterised in that：Being provided with the working cylinder (2) can be described
Reciprocating piston unit (4) in working cylinder (2), the piston unit (4) includes piston only (41), the piston only
(41) valve component (43) of the negotiable piston only (41) both sides hydraulic oil (8), the valve component are provided with
(43) gas (9) the extremely piston only (41) between the negotiable piston only (41) and bottom valve unit (6) is provided with
Fixed orifice (431) between guide cover (3).
3. oil-pressure damper according to claim 2, it is characterised in that：The oil-pressure damper further comprises negotiable
Exhaust list of the gas (9) extremely between the oil storage cylinder (1) and working cylinder (2) between the piston only (41) and guide cover (3)
First (7), the exhaust unit (7) includes the conduction hole (71) being arranged on the guide cover (3), the conduction hole (71) and institute
State working cylinder (2) to be connected, air discharge duct (73) has further been radially arranged on the guide cover (3), the air discharge duct (73)
One end is connected with the conduction hole (71), and the other end of the air discharge duct (73) is connected with the oil storage cylinder (1).
4. oil-pressure damper according to claim 3, it is characterised in that：The conduction hole (71) is along the guide cover (3)
It is circumferentially distributed on the guide cover (3), the exhaust unit (7) further comprises the ring being connected with the conduction hole (71)
Groove (72), one end of the air discharge duct (73) is connected with the annular groove (73).
5. oil-pressure damper according to claim 1, it is characterised in that：The bottom valve unit (6) includes can be by the storage
The oil return valve (61) that hydraulic oil (8) between oil cylinder (1) and working cylinder (1) is flowed into the working cylinder (2), the bottom valve pedestal
(5) spill port (51) is provided with, the oil return valve (61) is arranged in the spill port (51), spill port (51) center
Line is located at the side of bottom valve pedestal (5) center line.
6. oil-pressure damper according to claim 5, it is characterised in that：The bottom valve unit (6) further comprises can be by
The unloading valve (62) that hydraulic oil (8) is flowed between the oil storage cylinder (1) and working cylinder (2) in the working cylinder (2), the bottom valve
Unloading hole (52) is provided with pedestal (3), the unloading valve (62) is arranged in the unloading hole (52).
7. oil-pressure damper according to claim 6, it is characterised in that：The bottom valve pedestal (3) is further provided with can
The hydraulic oil (8) that the unloading valve (62) flows out is guided to flow into the oil storage cylinder (1) and work towards the spill port (51) side
Make the guidance set (53) between cylinder (2), the guidance set (53) includes being arranged at the first of bottom valve pedestal (5) bottom surface
Guide plate (531), first guide plate (531) is synthetic into arc, and the opening of the arc is set towards the oil return valve (61)
Put, first guide plate (531) is located at the unloading valve (62) and deviates from the oil return valve (61) side.
8. oil-pressure damper according to claim 7, it is characterised in that：The guidance set (53) further comprises second
Guide plate (532), second guide plate be connected with the bottom of first guide plate (531) and with the oil storage cylinder (1) bottom
Face is fitted, and the oil return valve (61) relevant position is provided with U-shaped opening on second guide plate (532).
9. oil-pressure damper according to claim 8, it is characterised in that：The 3rd guide plate is connected with the U-shaped opening
(533), the 3rd guide plate (533) is further connected together to liquid with the bottom valve pedestal (5), the first guide plate (531)
(8) passage is pressed oil, the 3rd guide plate (533) is provided with the unloading valve (62) corresponding position and the off-load may be guided
Valve (62) hydraulic oil (8) flows to the outlet (534) to the oil return valve (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508201.6A CN107143598B (en) | 2017-06-28 | 2017-06-28 | Oil-pressure damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508201.6A CN107143598B (en) | 2017-06-28 | 2017-06-28 | Oil-pressure damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107143598A true CN107143598A (en) | 2017-09-08 |
| CN107143598B CN107143598B (en) | 2019-06-18 |
Family
ID=59785343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710508201.6A Active CN107143598B (en) | 2017-06-28 | 2017-06-28 | Oil-pressure damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107143598B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727992A (en) * | 2020-12-22 | 2021-04-30 | 东风越野车有限公司 | Hydro-pneumatic spring base assembly integrating vehicle height sensor and valve bank |
| WO2021143893A1 (en) * | 2020-01-17 | 2021-07-22 | 常州中车柴油机零部件有限公司 | Hydraulic shock absorber and railway vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485899A (en) * | 1981-08-07 | 1984-12-04 | Fichtel & Sachs Ag | Shock absorber unit for vehicles |
| CN204704305U (en) * | 2015-06-29 | 2015-10-14 | 江西科技学院 | A kind of inflation hydraulic damper for automobile |
| CN205064679U (en) * | 2015-09-18 | 2016-03-02 | 珠海市业成轨道交通设备科技有限公司 | Hydraulic shock absorber's piston unit for rail locomotive vehicle |
-
2017
- 2017-06-28 CN CN201710508201.6A patent/CN107143598B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485899A (en) * | 1981-08-07 | 1984-12-04 | Fichtel & Sachs Ag | Shock absorber unit for vehicles |
| CN204704305U (en) * | 2015-06-29 | 2015-10-14 | 江西科技学院 | A kind of inflation hydraulic damper for automobile |
| CN205064679U (en) * | 2015-09-18 | 2016-03-02 | 珠海市业成轨道交通设备科技有限公司 | Hydraulic shock absorber's piston unit for rail locomotive vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021143893A1 (en) * | 2020-01-17 | 2021-07-22 | 常州中车柴油机零部件有限公司 | Hydraulic shock absorber and railway vehicle |
| CN112727992A (en) * | 2020-12-22 | 2021-04-30 | 东风越野车有限公司 | Hydro-pneumatic spring base assembly integrating vehicle height sensor and valve bank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107143598B (en) | 2019-06-18 |
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