CN104675901B - Gas rapid returning multi-stage hydraulic buffer - Google Patents
Gas rapid returning multi-stage hydraulic buffer Download PDFInfo
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- CN104675901B CN104675901B CN201310638111.0A CN201310638111A CN104675901B CN 104675901 B CN104675901 B CN 104675901B CN 201310638111 A CN201310638111 A CN 201310638111A CN 104675901 B CN104675901 B CN 104675901B
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- tapered rod
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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
-
- 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
- F16F9/3214—Constructional features of pistons
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention provides a gas rapid returning multi-stage hydraulic buffer. The gas rapid returning multi-stage hydraulic buffer comprises a hydraulic cylinder body filled hydraulic oil, a gas cylinder filled inert gas, a third stage plunger, a second stage plunger, a first stage plunger, a tapered rod, a check valve and a gas cylinder, wherein the third stage plunger can be slidably inserted into the cylinder body in the axial direction, the cylindrical third stage plunger is provided with an opening at the bottom of the third stage plunger, the second stage plunger can be slidably inserted into the third stage plunger in the axial direction, an opening is formed in the bottom of the second stage plunger, the first stage plunger can be slidably inserted into the second stage plunger in the axial direction, an opening is formed in the bottom of the first stage plunger, the tapered rod is vertically arranged on a ring-shaped platform in the hydraulic cylinder body and is inserted into the openings of the plungers in the downward movement process of the third stage plunger, the check valve is arranged at the bottom end of the tapered rod to enable the hydraulic oil to flow one way, and the gas cylinder is arranged at the bottom of the tapered rod to enable the third stage plunger to return to the position of unloaded state. The small hole throttle and the compressed inert gas are utilized to achieve the buffing under high speed and heavy load conditions, and the rapid returning of the buffer is achieved by the check valve.
Description
Technical field
The present invention relates to hydraulic bjuffer technical field, specifically one kind carry cylinder body, first order plunger, second level post
Plug, third level plunger and be applied at a high speed, big mass objects buffer the gas Rapid reset multistage hydraulic buffer of occasion.
Background technology
Traditional hydraulic bjuffer is usually single-stage, more employing torus knot discharge orifice one tapered rod plunger shape.Liquid
The volume of compression buffer and height are determined by cushion stroke, and cushion stroke is typically determined by impact velocity, and impact velocity is bigger,
Stroke is longer, and the volume of buffer oil cylinder and plunger and height are bigger.So make to be applied to adding of the buffer of high speed impact
Work, installation and transport difficulty greatly increase.
Therefore, in high speed and high-impact occasion, usually it is considered as multistage hydraulic buffer.In multi-stage buffer,
Plunger is divided into multistage, reduces the height of every one-stage hydraulic cylinder or plunger in the case of guaranteeing stroke, to reduce difficulty of processing.
Chinese invention patent CN101597003A discloses a kind of hydraulic buffer of elevator, and the plunger of this buffer is with the side of concentric overlapping
Formula is arranged, and can stretch in above-below direction, resets and relies on the spring being arranged on cylinder base.Chinese invention patent
CN101932521A discloses a kind of buffer of elevator, and plunger is also to be arranged in the way of concentric overlapping, but every one-level plunger
Reset and rely on single spring to carry out.Above multi-stage buffer is all to adopt spring reset, and after buffering terminates, spring still has
Height is had to cause the waste of buffer height.And spring causes certain difficulty can to the installation of buffer.
Content of the invention
The present invention is directed to above-mentioned deficiency present in prior art, there is provided a kind of gas Rapid reset multistage hydraulic buffering
Device, this buffer to replace spring using cylinder, and realize the Rapid reset of plunger by arranging check valve, can be applicable at a high speed
The flexible installing field of the Grand Equipments such as elevator, marine high-power wind-driven generator.
The present invention is achieved by the following technical solutions.
A kind of gas Rapid reset multistage hydraulic buffer, including such as lower component：
- it is filled with the hydraulic cylinder of hydraulic oil；
- it is filled with the cylinder of inert gas, described cylinder is arranged at the lower section of hydraulic cylinder, between cylinder and hydraulic cylinder
It is connected by ring-shaped platform；Described cylinder can make third level plunger, second level plunger and first order post after removing weight
Get back into the position of no load condition；
- it is erected at the tapered rod of hollow on ring-shaped platform, the middle cavity of tapered rod is relative with the centre bore of ring-shaped platform
Should；
- third level plunger, described third level plunger axially slidably inserts above-mentioned hydraulic cylinder, and in third level post
The bottom of plug is provided with the opening c for tapered rod insertion；
- second level plunger, described second level plunger axially slidably inserts above-mentioned third level plunger, and in the second level
The bottom of plunger is provided with the opening b for tapered rod insertion；
- first order plunger, described first order plunger axially slidably inserts above-mentioned second level plunger, and in the first order
The bottom of plunger is provided with the opening a being smaller in size than opening b；
Described hydraulic cylinder, third level plunger, second level plunger and first order plunger concentric sealing shroud successively from the bottom to top
Connect, form hydraulic mechanism, inside described hydraulic mechanism, be filled with hydraulic oil.
Preferably, described tapered rod bottom is provided with the check valve for controlling hydraulic oil flow direction.
Preferably, described first order plunger head is provided with cushion pad.
Preferably, the sectional area of described tapered rod is gradually increased with leveling off to the bottom of tapered rod.
Preferably, it is provided with oil through a, described logical oil between the bottom of described first order plunger and the inner chamber of second level plunger
Hole a is it can be avoided that first order plunger and second level plunger produce the vacuum cavity being unfavorable for buffering because of relative displacement.
In the same manner it is preferable that being provided with oil through b between the bottom of described second level plunger and the inner chamber of third level plunger；Institute
State and between the bottom of third level plunger and hydraulic cylinder, be provided with oil through c.
Preferably, one end of described tapered rod is connected with the inner chamber of first order plunger, and the other end of tapered rod is with cylinder even
Connect；Torus knot discharge orifice is constituted between the opening a of described first order plunger base and the outer surface of tapered rod；In buffering course,
Hydraulic oil within hydraulic mechanism can only enter the middle cavity of tapered rod by throttle orifice；And in reseting procedure, it is discharged into gas
A part of hydraulic oil in cylinder can be rapidly entered in hydraulic mechanism by check valve so that third level plunger, second level plunger
Being capable of Rapid reset with first order plunger.
Preferably, the area of throttle orifice is relevant with magnitude of load, the acceleration magnitude of buffering course and stroke, therefore tapered rod
Overall diameter need according to performance requirement come specific design.
Preferably, be provided with can be along cylinder piston in axial sliding, the outer rim of described piston and cylinder for described cylinder interior
Inwall is in close contact；In buffering course, piston can inert gas in compression cylinder, thus absorb and impacting and store energy
Amount；After impact load removes, piston, in the presence of gases at high pressure, hydraulic oil is pushed back hydraulic mechanism, thus realizing
The reset of three-level plunger, second level plunger and first order plunger.
Preferably, it is provided with sealing mechanism between described cylinder and piston.
Preferably, described check valve is two.
Compared with prior art, the present invention has following technical characterstic：
The present invention realizes buffering at a high speed, under case of heavy load using orifice restriction with by compressed inert, and
Realize the Rapid reset of buffer by check valve.Further, since present invention employs multi-stage buffer, it is easy to plunger and cylinder
The processing of body and transport.
Brief description
The detailed description with reference to the following drawings, non-limiting example made by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the sectional view of the no load condition of multistage hydraulic buffer of the present invention.
The sectional view of the state that Fig. 2 is compressed by total travel for multistage hydraulic buffer.
Fig. 3 is the state sectional view during first order ram compression.
Fig. 4 is the state sectional view during the ram compression of the second level.
Fig. 5 is the state sectional view during third level ram compression.
Fig. 6 is the graph of a relation of the aperture area of the displacement of first order plunger and throttle orifice.
In figure：
1- cushion pad；
2- first order plunger；
3- oil through a；
4- second level plunger；
5- oil through b；
6- third level plunger；
7- oil through c；
8- check valve；
9- tapered rod；
10- opening a；
11- opening b；
12- opening c；
13- hydraulic cylinder；
14- ring-shaped platform；
15- piston；
16- cylinder.
Specific embodiment
Below embodiments of the invention are elaborated：The present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process.It should be pointed out that to those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.
Please refer to Fig. 1 to Fig. 6.
Present embodiments provide a kind of gas Rapid reset multistage hydraulic buffer, including such as lower component：
- it is filled with the hydraulic cylinder of hydraulic oil；
- it is filled with the cylinder of inert gas, described cylinder is arranged at the lower section of hydraulic cylinder, between cylinder and hydraulic cylinder
It is connected by ring-shaped platform；Described cylinder can make third level plunger, second level plunger and first order post after removing weight
Get back into the position of no load condition；
- it is erected at the tapered rod of hollow on ring-shaped platform, the middle cavity of tapered rod is relative with the centre bore of ring-shaped platform
Should；
- third level plunger, described third level plunger axially slidably inserts above-mentioned hydraulic cylinder, and in third level post
The bottom of plug is provided with the opening c for tapered rod insertion；
- second level plunger, described second level plunger axially slidably inserts above-mentioned third level plunger, and in the second level
The bottom of plunger is provided with the opening b for tapered rod insertion；
- first order plunger, described first order plunger axially slidably inserts above-mentioned second level plunger, and in the first order
The bottom of plunger is provided with the opening a being smaller in size than opening b；
Described hydraulic cylinder, third level plunger, second level plunger and first order plunger concentric sealing shroud successively from the bottom to top
Connect, form hydraulic mechanism, inside described hydraulic mechanism, be filled with hydraulic oil.
Further, described tapered rod bottom is provided with the check valve for controlling hydraulic oil flow direction.
Further, described first order plunger head is provided with cushion pad.
Further, the sectional area of described tapered rod is gradually increased with leveling off to the bottom of tapered rod.
Further, it is provided with oil through a between the bottom of described first order plunger and the inner chamber of second level plunger, described logical
Oilhole a is it can be avoided that first order plunger and second level plunger produce the vacuum cavity being unfavorable for buffering because of relative displacement.
In the same manner, further, it is provided with oil through b between the bottom of described second level plunger and the inner chamber of third level plunger；
It is provided with oil through c between the bottom of described third level plunger and hydraulic cylinder.
Further, one end of described tapered rod is connected with the inner chamber of first order plunger, the other end of tapered rod and cylinder
Connect；Torus knot discharge orifice is constituted between the opening a of described first order plunger base and the outer surface of tapered rod；In buffering course
In, the hydraulic oil within hydraulic mechanism can only enter the middle cavity of tapered rod by throttle orifice；And in reseting procedure, be discharged into
A part of hydraulic oil in cylinder can be rapidly entered in hydraulic mechanism by check valve so that third level plunger, second level post
Plug and first order plunger being capable of Rapid resets.
Further, the area of throttle orifice is relevant with magnitude of load, the acceleration magnitude of buffering course and stroke, therefore taper
The diameter of rod needs according to performance requirement come specific design.
Further, described cylinder interior be provided with can along cylinder piston in axial sliding, the both ends of described piston with
Cylinder inner wall is in close contact；In buffering course, piston can inert gas in compression cylinder, thus absorb and impacting and store
Energy；After impact load removes, piston, in the presence of gases at high pressure, hydraulic oil is pushed back hydraulic mechanism, thus realizing
The reset of third level plunger, second level plunger and first order plunger.
Further, it is provided with sealing mechanism between described cylinder and piston.
Further, described check valve is two.
The present embodiment is specially：
As shown in figure 1, the gas Rapid reset multistage hydraulic buffer that the present embodiment provides, including hydraulic cylinder 13, gas
Cylinder 16, first order plunger 2, second level plunger 4, third level plunger 6, check valve 8 and tapered rod 9；Wherein first order plunger 2,
Two stage column plug 4 and third level plunger 6 can be entrenched in hydraulic cylinder in above-below direction, and the diameter of this three-level plunger is suitable from outside to inside
Secondary reduction, and overlapping setting in concentric manner each other.
Cylinder body is made up of hydraulic cylinder 13 and cylinder 16.Wherein, from first order plunger 2, second level plunger 4, third level post
The hydraulic oil flowing out in plug 6 and hydraulic cylinder 13 acts on piston 15 upper surface by cavity in tapered rod 9, and compression cylinder
Inert gas in 16.Tapered rod 9 is erected on ring-shaped platform 14, insertion opening b11 and opening c12, and declines in plunger
During in insertion opening a10.
The bottom of first order plunger 2 has opening a10 and oil through 3, and is full of hydraulic oil in this plunger.The second level
Hydraulic oil in plunger 4 acts on the bottom of first order plunger 2 so that plunger 2 can be fully extended, and enables this plunger
Slide up and down.The bottom surface of second level plunger has opening b11 and oil through 5, and is full of hydraulic oil in this plunger.The third level
Hydraulic oil in plunger 6 acts on the bottom of second level plunger 4 so that plunger 4 can be fully extended, and enables this plunger
Slide up and down.Third level plunger 6 bottom has opening c12 and oil through 7, and is full of hydraulic oil in this plunger.Hydraulic cylinder
Hydraulic oil in body 13 acts on third level plunger 6 bottom so that plunger 6 can be fully extended, and enables on this plunger
Lower slider.
In this hydraulic bjuffer, with the decline of plunger, the hydraulic pressure in plunger 2, plunger 4, plunger 6 and hydraulic cylinder 13
Oil enters in cylinder 16 by the cavity in tapered rod 9, now due to hydraulic oil pass through opening a10 and tapered rod 9 outer surface it
Between torus knot discharge orifice and the restriction effect that produces, very big resistance is produced to the plunger 2 declining, plunger 4 and plunger 6, thus
Obtain buffering effect, meanwhile, with the decline of plunger 2, plunger 4 and plunger 6, in the presence of tapered rod 9, the area of throttle orifice
It is gradually reduced, the resistance of hydraulic oil will be gradually increased, its corresponding result is that the decrease speed of plunger 2, plunger 4 and plunger 6 will
Slow down gradually until the speed of plunger 2, plunger 4 and plunger 6 is zero.
In this buffer, check valve 8 is arranged on the bottom of tapered rod 9 so that in hydraulic cylinder 13 in buffering course
Hydraulic oil can not be entered in tapered rod by check valve 8.When resetting, the oil liquid pressure in tapered rod 9 is more than hydraulic cylinder 13
Interior oil liquid pressure, the hydraulic oil in tapered rod 9 can be entered in hydraulic cylinder 13 by check valve.
Action to the hydraulic bjuffer with said structure illustrates below.
After the cushion pad 1 (can adopt rubber blanket) of weight and top collides.First, first order plunger 2 along
The inwall slide downward of second level plunger 4 is so that oil liquid pressure in second level plunger 4, third level plunger 6 and hydraulic cylinder 13
Raise.Due to the presence of check valve, hydraulic oil can only be entered by the torus knot discharge orifice between opening a10 and tapered rod 9 outer surface
Enter first order plunger 2, and cylinder 16 is entered by the inner chamber of tapered rod 9, in the collective effect of gas pressure and oil liquid pressure
Under, play the effect of deceleration.
When first order plunger 2 completes stroke, the bottom of the bottom of first order plunger 2 and second level plunger 4 will occur
Contact.Then, first order plunger 2 and second level plunger 4 are moved downwardly together with same speed.Similar with said process,
When first order plunger 2 and second level plunger 4 move downwardly together, the hydraulic oil in third level plunger 6 and hydraulic cylinder 13 passes through
Torus knot discharge orifice between opening a10 and tapered rod 9 outer surface enters in first order plunger 2, and is entered by the inner chamber of tapered rod 9
Enter cylinder 16, under the collective effect of gas pressure and oil liquid pressure, play the effect of deceleration.
When second level plunger 4 completes stroke, the bottom of second level plunger 4 will contact with the bottom of third level plunger 6.
Now, three-level plunger will be moved downwardly together with same speed.While three-level plunger together moves downward, hydraulic cylinder
The torus knot discharge orifice that hydraulic oil in 13 passes through between opening a10 and tapered rod 9 outer surface enters in first order plunger 2, passes through
The inner chamber of tapered rod 9 enters cylinder 16, under the collective effect of gas pressure and oil liquid pressure, plays the effect of deceleration.
Enter the inert gas that the hydraulic oil of cylinder 16 acts in piston 15 upper surface compression cylinder 16, play buffering
Effect storage energy.In whole buffering course, in the presence of tapered rod 9, the area of throttle orifice is gradually reduced, and is derived from
The resistance of hydraulic oil will be gradually increased, as a result, the decrease speed of weight is slowly dropped to zero.
Additionally, after removal weight, inert gas acts on piston 15 lower surface so that piston 15 moves upwards, simultaneously
Make the hydraulic oil in cylinder 16 most of by check valve 8 entrance hydraulic cylinder 13, fraction hydraulic oil passes through tapered rod 9
Inner chamber enters in plunger cavity so that plunger Quick-return is to uncharging original state.
In buffering course, control rod 9 is inserted in opening a10, forms ring between opening a10 and tapered rod 9 outer surface
The throttle orifice of shape, the area of throttle orifice changes with the change in displacement of plunger 2.Due to when weight is with certain velocity collision hydraulic pressure
In the case of buffer, preferable deceleration is certain value.Therefore, the relation between the displacement x of plunger 2 and throttle hole area A is such as
Shown in Fig. 6.Thus, can get the design parameter of tapered rod.
In the present embodiment：
Gas Rapid reset multistage hydraulic buffer, including the hydraulic cylinder being filled with hydraulic oil and be filled with indifferent gas
The cylinder of body, can slidably axially insert cylinder body and bottom be provided with opening third level plunger；Can be slidably
Axially insert third level plunger and be provided with the second level plunger of opening in bottom；Slidably can axially insert second
Level plunger, and it is provided with the first order plunger of opening in bottom；Erect on the ring-shaped platform being arranged in hydraulic cylinder, and in three-level
The tapered rod of plunger opening is inserted during the moving downward of plunger；It is arranged on the bottom of tapered rod so that the unidirectional stream of hydraulic oil
Dynamic check valve and make three-level plunger be returned to the cylinder of the position of no load condition；
Tapered rod inserts the opening of second level plunger and third level plunger base.And the sectional area of above-mentioned tapered rod with
Level off to the bottom of tapered rod and be gradually increased；
There is cavity in above-mentioned tapered rod, when above-mentioned plunger is compressed, the hydraulic oil in plunger and hydraulic cylinder leads to
The cavity crossed in tapered rod enters cylinder, and acts on the upper piston area in cylinder body, and then the inert gas in compression cylinder is (such as
Nitrogen)；Check valve is arranged on the bottom of tapered rod, and makes the hydraulic oil in hydraulic cylinder can not enter cone by check valve
In shape rod；
Three-level plunger is arranged in hydraulic cylinder in the way of can in axial direction stretching, and the diameter of plunger have outer arrive interior
It is gradually reduced, arrange in concentric manner each other；
In order to avoid the fluid leakage between three-level plunger, between the outer wall of upper level plunger and the inwall of next stage plunger
It is provided with sealing device；
In order to avoid the fluid leakage between third level plunger and hydraulic cylinder, in inwall and the third level post of hydraulic cylinder
It is provided with sealing device between the outer wall of plug；
It is provided with oil through, it is to avoid between this two-stage plunger, produce vacuum in the bottom of upper level plunger and next stage plunger cavity
Region；
It also is provided with oil through between the bottom of third level plunger and cylinder body；
Above-mentioned piston is arranged on the inwall of cylinder, and can slide up and down along cylinder；
In order to avoid the gas leakage in cylinder, between piston and cylinder, there is sealing device；
Above-mentioned cushion pad is arranged on the top of first order plunger.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (9)
1. a kind of gas Rapid reset multistage hydraulic buffer, including：
- it is filled with the hydraulic cylinder of hydraulic oil；
- it is filled with the cylinder of inert gas, described cylinder is arranged at the lower section of hydraulic cylinder, passes through between cylinder and hydraulic cylinder
Ring-shaped platform is connected；Described cylinder can make third level plunger, second level plunger and first order plunger return after removing weight
Position to no load condition；
The sealing socket with one heart successively from the bottom to top of described hydraulic cylinder, third level plunger, second level plunger and first order plunger, shape
Become hydraulic mechanism, inside described hydraulic mechanism, be filled with hydraulic oil；
It is characterized in that, also include as lower component：
- it is erected at the tapered rod of hollow on ring-shaped platform, the middle cavity of tapered rod is corresponding with the centre bore of ring-shaped platform；
- third level plunger, described third level plunger axially slidably inserts above-mentioned hydraulic cylinder, and in third level plunger
Bottom is provided with the opening c for tapered rod insertion；
- second level plunger, described second level plunger axially slidably inserts above-mentioned third level plunger, and in second level plunger
Bottom be provided with for tapered rod insertion opening b；
- first order plunger, described first order plunger axially slidably inserts above-mentioned second level plunger, and in first order plunger
Bottom be provided with the opening a being smaller in size than opening b.
2. gas Rapid reset multistage hydraulic buffer according to claim 1 is it is characterised in that described tapered rod bottom
It is provided with the check valve for controlling hydraulic oil flow direction.
3. gas Rapid reset multistage hydraulic buffer according to claim 1 is it is characterised in that described first order plunger
Top is provided with cushion pad.
4. gas Rapid reset multistage hydraulic buffer according to claim 1 is it is characterised in that described tapered rod level
The sectional area in direction is gradually increased with leveling off to the bottom of tapered rod.
5. gas Rapid reset multistage hydraulic buffer according to claim 1 is it is characterised in that described first order plunger
Bottom and the inner chamber of second level plunger between be provided with oil through a, described oil through a is it can be avoided that first order plunger and the second level
Plunger produces the vacuum cavity being unfavorable for buffering because of relative displacement.
6. according to claim 1 or 5 gas Rapid reset multistage hydraulic buffer it is characterised in that the described second level
It is provided with oil through b between the inner chamber of the bottom of plunger and third level plunger；The bottom of described third level plunger and hydraulic cylinder it
Between be provided with oil through c.
7. gas Rapid reset multistage hydraulic buffer according to claim 2 it is characterised in that described tapered rod one
End is connected with the inner chamber of first order plunger, and the other end of tapered rod is connected with cylinder；The opening a of described first order plunger base with
Torus knot discharge orifice is constituted between the outer surface of tapered rod；In buffering course, the hydraulic oil within hydraulic mechanism can only be by section
Discharge orifice enters the middle cavity of tapered rod；And in reseting procedure, a part of hydraulic oil of being discharged in cylinder can pass through unidirectional
Valve rapidly enters in hydraulic mechanism so that third level plunger, second level plunger and first order plunger being capable of Rapid resets.
8. the gas Rapid reset multistage hydraulic buffer according to claim 1 or 7 is it is characterised in that in described cylinder
Portion is provided with can be along cylinder piston in axial sliding, and the outer rim of described piston is in close contact with cylinder inner wall；In buffering course,
Piston can inert gas in compression cylinder, thus absorbing impact storage energy；After impact load removes, piston is in height
Calm the anger in the presence of body, hydraulic oil is pushed back hydraulic mechanism, thus realizing third level plunger, second level plunger and first order post
The reset of plug.
9. gas Rapid reset multistage hydraulic buffer according to claim 8 is it is characterised in that described cylinder and piston
Between be provided with sealing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310638111.0A CN104675901B (en) | 2013-12-02 | 2013-12-02 | Gas rapid returning multi-stage hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310638111.0A CN104675901B (en) | 2013-12-02 | 2013-12-02 | Gas rapid returning multi-stage hydraulic buffer |
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| Publication Number | Publication Date |
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| CN104675901A CN104675901A (en) | 2015-06-03 |
| CN104675901B true CN104675901B (en) | 2017-02-15 |
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| CN105240339B (en) * | 2015-10-22 | 2017-09-29 | 北京北机机电工业有限责任公司 | A kind of vibrating air cylinder |
| CN106369010B (en) * | 2016-10-27 | 2018-04-13 | 华南理工大学 | A kind of adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method |
| CN109764025B (en) * | 2019-01-24 | 2024-03-26 | 蓝箭航天空间科技股份有限公司 | Carrier rocket and multistage pneumatic support cylinder for recycling carrier rocket |
| CN109838491A (en) * | 2019-03-08 | 2019-06-04 | 上海理工大学 | A kind of multistage hydraulic buffer with tapered rod of gas reset |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2784574B2 (en) * | 1988-03-30 | 1998-08-06 | 住友精密工業株式会社 | Aircraft shock absorber |
| CN201198853Y (en) * | 2008-05-15 | 2009-02-25 | 内蒙古北方重型汽车股份有限公司 | Buffering device of automobile hanging cylinder |
| US8967346B2 (en) * | 2009-10-30 | 2015-03-03 | Great Lakes Sound & Vibration, Inc. | Multi-stage telescopic shock absorber |
| CN203009675U (en) * | 2012-11-07 | 2013-06-19 | 程林森 | Knitting machine head buffer structure |
| CN105114518A (en) * | 2013-06-25 | 2015-12-02 | 蒋盘君 | Operating method of multi-stage buffer |
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