CN217814715U - Oil-gas separation vertical oil pressure shock absorber - Google Patents
Oil-gas separation vertical oil pressure shock absorber Download PDFInfo
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- CN217814715U CN217814715U CN202220846335.5U CN202220846335U CN217814715U CN 217814715 U CN217814715 U CN 217814715U CN 202220846335 U CN202220846335 U CN 202220846335U CN 217814715 U CN217814715 U CN 217814715U
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Abstract
The oil-gas separated vertical oil pressure shock absorber comprises an oil storage cylinder, a pressure cylinder, a piston rod, a guide seat, a framework oil seal and a bottom valve member, wherein the piston divides an inner cavity of the pressure cylinder into a piston upper cavity positioned above the piston and a piston lower cavity positioned below the piston, an oil storage cavity is formed between the pressure cylinder and the oil storage cylinder, an elastic movable valve capable of conducting the piston upper cavity and the oil storage cavity is arranged on the guide seat, the upper half part of the oil storage cavity is air, the lower half part of the oil storage cavity is oil, a flow guide device is arranged in the oil storage cavity, the upper end of the flow guide device is coaxially fixed with the guide seat, the lower end of the flow guide device extends into the oil in the lower half part of the oil storage cavity, and the oil in the piston upper cavity is directly guided into the lower half part of the oil storage cavity through the flow guide device along with the opening of the elastic movable valve. The utility model discloses guarantee in the piston rod motion in-process fluid directly channels into oil storage chamber second section, can not with the air mixing of oil storage chamber first section, realize oil, the gas separation in the oil hydraulic shock absorber, improve the sealing reliability of skeleton oil blanket to extension oil hydraulic shock absorber's life.
Description
Technical Field
The utility model relates to an oil-gas separation's vertical oil pressure shock absorber belongs to oil pressure shock absorber technical field.
Background
The oil pressure damper for the railway rolling stock is a key component of rail transit equipment such as an electric locomotive, an internal combustion locomotive, a subway train and the like, and has the functions of slowing down the vibration of the rolling stock in the running process, ensuring the running safety of the rolling stock and improving the comfort level of the train. The damping effect of the oil pressure damper is determined by the damping force characteristic of the oil pressure damper; for the oil pressure vibration absorber with oil liquid one-way circulation, the advantages and disadvantages of the oil liquid flow guiding and oil-gas separating effect are structural devices which are one of the key factors for determining the damping force characteristic of the oil pressure vibration absorber. Therefore, it is necessary to design an oil-gas separation device with excellent oil-gas separation effect to further improve the oil-gas separation effect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a oil-gas separation's vertical oil pressure shock absorber, guiding device's simple structure, easily installation location guarantees in piston rod motion process fluid directly channels into the oil storage chamber in the second section, can not with the air mixing of the first section in oil storage chamber, realizes oil, the gas separation among the oil pressure shock absorber, improves the sealing reliability of skeleton oil blanket to extension oil pressure shock absorber's life.
In order to achieve the purpose, the utility model adopts the technical proposal that:
oil-gas separation's vertical oil pressure shock absorber, including vertical setting and the upwards open-ended oil storage cylinder, the pressure tube of dress in the oil storage cylinder, the piston of sealed cooperation dress in the pressure tube, stretch into in the pressure tube with the piston rod of piston fixation, the dress is in the oil storage cylinder with piston rod direction complex guide holder, dress in the guide holder and with piston rod seal complex skeleton oil blanket and dress be in the oil storage cylinder with the sealed end valve member of pressure tube bottom, the piston divide into the piston epicoele that is located the piston top with the inner chamber of pressure tube and is located the piston cavity of resorption below the piston, form the oil storage chamber between pressure tube and the oil storage cylinder, the flexible movable valve that can switch on piston epicoele and oil storage chamber is equipped with on the guide holder, the first half is the air in the oil storage chamber, the second half is fluid, its characterized in that: the oil storage cavity is internally provided with a flow guide device, the upper end of the flow guide device is coaxially fixed with the guide seat, the lower end of the flow guide device extends into oil in the lower half section of the oil storage cavity, and the oil in the upper piston cavity is directly guided into the lower half section of the oil storage cavity through the flow guide device along with the opening of the elastic movable valve.
Preferably, the guiding device comprises a guiding sleeve coaxially sleeved on the guiding seat and a guiding pipe arranged at the bottom of the guiding sleeve, the guiding pipe is axially arranged, the lower end of the guiding pipe extends into the lower half section of the oil storage cavity, the guiding sleeve and the guiding seat surround to form a small cavity, and oil in the upper piston cavity flows into the small cavity along with the opening of the elastic movable valve and is directly guided into the lower half section of the oil storage cavity through the guiding pipe.
Preferably, the guide seat is pressed into the guide sleeve in an interference fit manner, the bottom of the guide sleeve is clamped between the guide seat and the pressure cylinder, and the bottom of the guide sleeve is provided with a through hole which is coaxially butted with the top end of the pressure cylinder.
Preferably, the bottom of the flow guide sleeve is provided with a mounting hole corresponding to the flow guide pipe, the top of the flow guide pipe is provided with a flange with the diameter larger than that of the mounting hole, the flow guide pipe is pressed into the mounting hole in a tight fit manner and is overlapped on the flow guide sleeve, and the flow guide pipe is distributed uniformly in the circumferential direction of the flow guide sleeve in a plurality.
Preferably, the framework oil seal, the guide seat and the piston rod surround to form an oil gathering cavity, and an oil return channel communicated with the oil gathering cavity and the oil storage cavity is formed in the guide seat.
Preferably, the guide seat is provided with an oil passing hole communicated with the elastic movable valve and the small cavity, and oil in the piston upper cavity is sprayed into the small cavity from the oil passing hole along with the opening of the elastic movable valve.
The utility model has the advantages that:
1. in the utility model, the oil liquid flows in a one-way circulation manner, when the piston rod is pressed inwards, the oil pressure in the lower piston cavity rises, the bottom valve part is closed, the valve seat on the oil liquid jacking piston enters the upper piston cavity and then jacks the elastic movable valve to flow into the flow guide device, and the oil liquid is guided into the lower half section of the oil storage cavity directly through the flow guide device to be mixed with the liquid oil in the lower half section of the oil storage cavity; when the piston rod extends outwards, the oil pressure in the upper piston cavity rises, the oil pushes the elastic movable valve open to flow into the flow guide device, the oil is guided by the flow guide device to be directly guided into the lower half section of the oil storage cavity to be mixed with the oil in the lower half section of the oil storage cavity, simultaneously, the oil pressure in the lower piston cavity falls, and the oil in the oil storage cavity pushes the bottom valve element open to enter the lower piston cavity so as to compensate the volume of the extending part of the piston rod sequence; the flow guide device is simple in structure and easy to install and position, and ensures that oil is directly guided into the lower half section of the oil storage cavity in the movement process of the piston rod and cannot be mixed with air in the upper half section of the oil storage cavity, so that oil and air in the oil pressure shock absorber are separated.
2. A guide sleeve in the guide device is in interference press-fitting with a guide seat, a small cavity is formed between the guide sleeve and the guide sleeve, the flowing space of oil liquid is enlarged when the elastic movable valve is opened, the high-pressure oil liquid is prevented from being gushed into an oil collecting cavity below the framework oil seal when being sprayed out of the elastic movable valve, the pressure of the framework oil seal is reduced, the sealing reliability of the framework oil seal is improved, and therefore the service life of the oil pressure shock absorber is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of a vertical oil-pressure damper for oil-gas separation.
Fig. 2 is a schematic structural view of the flow guide device.
Fig. 3 is a schematic structural view of the flow guide sleeve.
Detailed Description
The following describes embodiments of the present invention in detail with reference to fig. 1 to 3.
Oil-gas separation's vertical oil pressure shock absorber, including vertical setting and the upwards open-ended reserve tank 1, pressure tube 2 of dress in reserve tank 1, piston 3 of sealed cooperation dress in pressure tube 2, stretch into to pressure tube 2 in with piston 3 fixed piston rod 4, dress in reserve tank 1 with piston rod 4 direction complex guide holder 5, dress in guide holder 5 and with piston rod 4 seal complex skeleton oil blanket 6 and dress in reserve tank 1 with the sealed bottom valve spare 7 in reserve tank 2 bottom, piston 3 divide into the piston cavity I that is located piston 3 top and the piston cavity II that is located piston 3 below with pressure tube 2's inner chamber, form oil storage chamber III between pressure tube 2 and the reserve tank 1, be equipped with the flexible movable valve 8 that can switch on piston cavity I and oil storage chamber on the guide holder 5, the middle-upper half section in oil storage chamber III is the air, the lower half section is fluid, its characterized in that: the oil storage cavity III in be equipped with guiding device 9, guiding device 9 upper end and guide holder 5 coaxial fixed, the lower extreme stretches into in the fluid of oil storage cavity III lower half, the fluid in the piston epicoele I directly leads into in the lower half of oil storage cavity III through guiding device 9 along with the opening of elasticity movable valve 8.
The oil in the oil-gas separation vertical oil pressure shock absorber flows in a unidirectional circulation mode, when the piston rod 4 is pressed inwards, the oil pressure in the piston lower cavity II rises, the bottom valve part 7 is closed, the oil jacks a valve seat on the piston 3, enters the piston upper cavity I, jacks an elastic movable valve 8, flows into the flow guide device 9, and is guided by the flow guide device 9 to be directly guided into the lower half section of the oil storage cavity III to be mixed with the oil in the lower half section of the oil storage cavity III; when the piston rod 4 extends outwards, the oil pressure in the piston upper cavity I rises, the oil jacks up the elastic movable valve 8 to flow into the flow guide device 9, the oil is directly guided into the lower half section of the oil storage cavity III through the flow guide device 9 to be mixed with the oil in the lower half section of the oil storage cavity, meanwhile, the oil pressure in the piston lower cavity II falls, and the oil in the oil storage cavity III jacks up the bottom valve piece 7 to enter the piston lower cavity II so as to compensate the volume of the extending part of the piston rod 4; the guiding device 9 is simple in structure and easy to install and position, ensures that oil is directly led into the lower half section of the oil storage cavity III in the movement process of the piston rod 4 and cannot be mixed with air in the upper half section of the oil storage cavity III, and oil and air separation in the oil pressure shock absorber is realized.
The guide device 9 comprises a guide sleeve coaxially sleeved on the guide seat 5 and a guide pipe 92 arranged at the bottom of the guide sleeve 91, the guide pipe 92 is axially arranged, the lower end of the guide sleeve 92 extends into the lower half section of the oil storage cavity III, the guide sleeve 91 and the guide seat 5 surround to form a small cavity IV, oil in the piston upper cavity I flows into the small cavity IV along with the opening of the elastic movable valve 8, and the oil is directly guided into the lower half section of the oil storage cavity III through the guide pipe 92. The deflector sleeve 91 is coaxially assembled at the bottom of the guide seat 5, a small cavity IV is formed between the deflector sleeve and the guide seat 5, the flowing space of oil liquid is enlarged when the elastic movable valve 8 is opened, the high-pressure oil liquid is prevented from being sprayed out from the elastic movable valve 8 to impact the framework oil seal 6, the pressure of the framework oil seal 6 is reduced, the sealing reliability of the framework oil seal 6 is improved, and the service life of the oil pressure shock absorber is prolonged.
The guide seat 5 is pressed into the guide sleeve 91 in an interference fit manner, the bottom of the guide sleeve 91 is clamped between the guide seat 5 and the pressure cylinder 2, and the bottom of the guide sleeve 91 is provided with a through hole 911 coaxially butted with the top end of the pressure cylinder 2. The guide sleeve 91 is sleeved on the guide seat 5 in an interference fit manner, the through hole 911 at the bottom is butted with the pressure cylinder 2, so that the piston rod 4 passes through the through hole, the bottom of the guide sleeve 91 is clamped between the guide seat 5 and the pressure cylinder 2 to form axial positioning, the installation and positioning structure of the guide sleeve 91 is simple, the structure of the guide seat 5 does not need to be changed, and the guide sleeve is easy to install in place.
Wherein, the bottom of water conservancy diversion cover 91 is opened has the mounting hole 912 corresponding with honeycomb duct 92, and honeycomb duct 92 top has the turn-ups 921 that the diameter is greater than mounting hole 912, and honeycomb duct 92 tight fit is impressed in the mounting hole 912 and turn-ups 921 and overlap joint are on water conservancy diversion cover 91, and honeycomb duct 92's quantity is a plurality of and along water conservancy diversion cover 91 circumference evenly distributed. Turn-ups 921 is with honeycomb duct 92 axial positioning on water conservancy diversion cover 91, and honeycomb duct 92's quantity is a plurality of, can be fast open elasticity movable valve 8 the time high-pressure fluid that erupts directly into to the second half section of oil storage chamber III in, the speed that fluid was derived is fast, effectively reduces the pressure that the fluid that erupts in the elasticity movable valve 8 formed to skeleton oil blanket 6 on the basis of effectively carrying out oil, gas separation, guarantees the sealing reliability of skeleton oil blanket 6.
The framework oil seal 6, the guide seat 5 and the piston rod 4 are encircled to form an oil collecting cavity V, and an oil return channel 51 communicated with the oil collecting cavity V and the oil storage cavity III is formed in the guide seat 5. The little seepage fluid of piston rod 4 motion in-process is gathered at oil collecting chamber V, the fluid in oil collecting chamber V flows into oil storage chamber III through oil return channel 51, guiding device 9 will follow in the elastic movable valve 8 erupts the fluid directly into the second half section in oil storage chamber III, avoid high-pressure fluid gush into oil collecting chamber V below skeleton oil blanket 6 when the elastic movable valve 8 is spout, alleviate the pressure of skeleton oil blanket 6, improve the sealing reliability of skeleton oil blanket 6, thereby the life of extension oil pressure shock absorber.
The guide seat 5 is provided with an oil passing hole 52 for communicating the elastic movable valve 8 with the small cavity IV, and oil in the piston upper cavity I is sprayed into the small cavity IV from the oil passing hole 52 along with the opening of the elastic movable valve 8. The elastic movable valve 8 is arranged in a valve hole of the guide support 5 and comprises a screw cap fixed with the guide support 5, a valve core movable in the valve hole of the guide support 5 and a spring compressed between the valve core and the screw cap, when the oil pressure of the piston upper cavity I rises to push the valve core to move in the valve hole of the guide support 5, the spring is compressed, the valve hole of the guide support 5 is communicated with the oil passing hole 52, high-pressure oil in the piston upper cavity I is sprayed into the small cavity IV from the oil passing hole 52 and is sprayed into the flow guide pipe 92 from the small cavity IV, the high-pressure oil is directly guided into the lower half section of the oil storage cavity III through the flow guide pipe 92 and is mixed with the oil in the lower half section of the oil storage cavity III, and the separation of the oil and the gas in the oil storage cavity III is realized.
The technical solutions of the embodiments of the present invention are completely described above with reference to the accompanying drawings, and it should be noted that the described embodiments are only some embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (6)
1. Oil-gas separation's vertical oil pressure shock absorber, including vertical setting and the upwards open-ended oil storage cylinder, the pressure tube of dress in the oil storage cylinder, the piston of sealed cooperation dress in the pressure tube, stretch into in the pressure tube with the piston rod of piston fixation, the dress is in the oil storage cylinder with piston rod direction complex guide holder, dress in the guide holder and with piston rod seal complex skeleton oil blanket and dress be in the oil storage cylinder with the sealed end valve member of pressure tube bottom, the piston divide into the piston epicoele that is located the piston top with the inner chamber of pressure tube and is located the piston cavity of resorption below the piston, form the oil storage chamber between pressure tube and the oil storage cylinder, the flexible movable valve that can switch on piston epicoele and oil storage chamber is equipped with on the guide holder, the first half is the air in the oil storage chamber, the second half is fluid, its characterized in that: the oil storage cavity is internally provided with a flow guide device, the upper end of the flow guide device is coaxially fixed with the guide seat, the lower end of the flow guide device extends into oil in the lower half section of the oil storage cavity, and the oil in the upper piston cavity is directly guided into the lower half section of the oil storage cavity through the flow guide device along with the opening of the elastic movable valve.
2. The oleo-pneumatic vertical oleo-hydraulic damper of claim 1, further comprising: the flow guiding device comprises a flow guiding sleeve coaxially sleeved on the guide seat and a flow guiding pipe arranged at the bottom of the flow guiding sleeve, the flow guiding pipe is axially arranged, the lower end of the flow guiding pipe extends into the lower half section of the oil storage cavity, the flow guiding sleeve and the guide seat are surrounded to form a small cavity, oil in the piston upper cavity flows into the small cavity along with the opening of the elastic movable valve, and the oil is directly guided into the lower half section of the oil storage cavity through the flow guiding pipe.
3. The oleo-pneumatic vertical oleo-hydraulic damper of claim 2, further comprising: the guide seat is pressed into the guide sleeve in an interference fit manner, the bottom of the guide sleeve is clamped between the guide seat and the pressure cylinder, and the bottom of the guide sleeve is provided with a through hole which is coaxially butted with the top end of the pressure cylinder.
4. The oleo-pneumatic vertical oleo-hydraulic damper of claim 2, further comprising: the bottom of the flow guide sleeve is provided with a mounting hole corresponding to the flow guide pipe, the top of the flow guide pipe is provided with a flanging with the diameter larger than the mounting hole, the flow guide pipe is pressed into the mounting hole in a tight fit manner, the flanging and the flow guide sleeve are in lap joint, and the flow guide pipes are distributed uniformly in the circumferential direction of the flow guide sleeve in a plurality.
5. The oleo-pneumatic vertical oleo-hydraulic damper of claim 1, further comprising: the framework oil seal, the guide seat and the piston rod are encircled to form an oil gathering cavity, and an oil return channel communicated with the oil gathering cavity and the oil storage cavity is formed in the guide seat.
6. The oleo-pneumatic vertical oleo-hydraulic damper of claim 2, further comprising: the guide seat is provided with an oil passing hole communicated with the elastic movable valve and the small cavity, and oil in the piston upper cavity is sprayed into the small cavity from the oil passing hole along with the opening of the elastic movable valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220846335.5U CN217814715U (en) | 2022-04-13 | 2022-04-13 | Oil-gas separation vertical oil pressure shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220846335.5U CN217814715U (en) | 2022-04-13 | 2022-04-13 | Oil-gas separation vertical oil pressure shock absorber |
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| Publication Number | Publication Date |
|---|---|
| CN217814715U true CN217814715U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220846335.5U Active CN217814715U (en) | 2022-04-13 | 2022-04-13 | Oil-gas separation vertical oil pressure shock absorber |
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| Country | Link |
|---|---|
| CN (1) | CN217814715U (en) |
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2022
- 2022-04-13 CN CN202220846335.5U patent/CN217814715U/en active Active
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