CN104675901A - Gas rapid returning multi-stage hydraulic buffer - Google Patents
Gas rapid returning multi-stage hydraulic buffer Download PDFInfo
- Publication number
- CN104675901A CN104675901A CN201310638111.0A CN201310638111A CN104675901A CN 104675901 A CN104675901 A CN 104675901A CN 201310638111 A CN201310638111 A CN 201310638111A CN 104675901 A CN104675901 A CN 104675901A
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- Prior art keywords
- plunger
- hydraulic
- cylinder
- level
- tapered rod
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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
-
- 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
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 a kind of with cylinder body, first order plunger, second level plunger, third level plunger and be applicable at a high speed, the gas Rapid reset multistage hydraulic buffer of large mass objects buffering occasion.
Background technique
Traditional hydraulic bjuffer is generally single-stage, more employing torus knot discharge orifice one tapered rod plunger shape.The volume of hydraulic bjuffer and height are determined by cushion stroke, and cushion stroke is generally determined by striking velocity, and striking velocity is larger, and stroke is longer, the volume of buffer oil cylinder and plunger and highly larger.The processing of the buffer being applicable to high speed impact, installation and transport difficulty is made greatly to increase like this.
Therefore, in high speed and high-impact occasion, usually consider to adopt multistage hydraulic buffer.In multi-stage buffer, plunger being divided into multistage, reducing the height of each grade of oil hydraulic cylinder or plunger when 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 arranged in mode superimposed with one heart, and can stretch at above-below direction, and reset the spring relying on and be arranged on cylinder base.Chinese invention patent CN101932521A discloses a kind of buffer of elevator, and plunger is also arrange in mode superimposed with one heart, but the reset of every one-level plunger relies on independent spring to carry out.Above multi-stage buffer is all adopt spring reset, and after buffering terminates, spring still has height and causes the waste of buffer height.And spring causes certain difficulty can to the installation of buffer.
Summary of the invention
The present invention is directed to above shortcomings in prior art, provide a kind of gas Rapid reset multistage hydraulic buffer, this buffer adopts cylinder to replace spring, and the Rapid reset of plunger is realized by arranging one-way valve, can be applicable to the flexible installing field of the Grand Equipments such as express 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, comprises as lower component:
-be filled with the hydraulic cylinder of hydraulic oil;
-being filled with the cylinder of inert gas, described cylinder is arranged at the below of hydraulic cylinder, is connected between cylinder with hydraulic cylinder by ring-shaped platform; Described cylinder can make third level plunger, second level plunger and first order plunger get back to the position of no load condition after removing weight;
-being erected at the tapered rod of the hollow on ring-shaped platform, the hollow cavity of tapered rod is corresponding with the center hole of ring-shaped platform;
-third level plunger, described third level plunger inserts above-mentioned hydraulic cylinder vertically slidably, and is provided with the opening c inserted for tapered rod in the bottom of third level plunger;
-second level plunger, described second level plunger inserts above-mentioned third level plunger vertically slidably, and is provided with the opening b inserted for tapered rod in the bottom of second level plunger;
-first order plunger, described first order plunger inserts above-mentioned second level plunger vertically slidably, and is provided with the opening a that size is less than opening b in the bottom of first order plunger;
Described hydraulic cylinder, third level plunger, second level plunger and first order plunger seal socket from the bottom to top successively with one heart, and form hydraulic mechanism, described hydraulic mechanism inside is filled with hydraulic oil.
Preferably, the one-way valve flowed to for hydraulic control oil is provided with bottom described tapered rod.
Preferably, described first order plunger head is provided with cushion pad.
Preferably, described tapered rod sectional area along with level off to tapered rod bottom and increase gradually.
Preferably, be provided with oil through a between the bottom of described first order plunger and the inner chamber of second level plunger, described oil through a can avoid first order plunger and second level plunger to produce because of relative displacement being unfavorable for the vacuum cavity cushioned.
In like manner, preferably, oil through b is provided with between the bottom of described second level plunger and the inner chamber of third level plunger; Oil through c is provided with between the bottom of described third level plunger and hydraulic cylinder.
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 connected with cylinder; Looping throttle orifice between the opening a of described first order plunger base and the outer surface of tapered rod; In buffering course, the hydraulic oil of hydraulic mechanism inside can only enter the hollow cavity of tapered rod by throttle orifice; And in reseting procedure, a part of hydraulic oil be discharged in cylinder can be entered in hydraulic mechanism fast by one-way valve, make third level plunger, second level plunger and first order plunger can Rapid reset.
Preferably, the area of throttle orifice is relevant with stroke with the acceleration magnitude of magnitude of load, buffering course, therefore the outer diameter of tapered rod needs to carry out specific design according to performance requirement.
Preferably, described cylinder interior is provided with can along cylinder piston in axial sliding, the outer rim of described piston and cylinder inner wall close contact; In buffering course, piston can inert gas in compression cylinder, thus absorbs and impact and stored energy; After impact load removes, hydraulic oil, under the effect of pressurized gas, is pushed back hydraulic mechanism by piston, thus realizes the reset of third level plunger, second level plunger and first order plunger.
Preferably, sealing mechanism is provided with between described cylinder and piston.
Preferably, described one-way valve is two.
Compared with prior art, the present invention has following technical characterstic:
The present invention adopts orifice restriction and realizes the buffering under high speed, case of heavy load by compressed inert, and is realized the Rapid reset of buffer by one-way valve.In addition, owing to present invention employs multi-stage buffer, be convenient to processing and the transport of plunger and cylinder body.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the sectional view of the no load condition of multistage hydraulic buffer of the present invention.
Fig. 2 is the sectional view of the state that multistage hydraulic buffer is compressed by total travel.
Fig. 3 is the state sectional view in first order ram compression process.
Fig. 4 is the state sectional view in the ram compression process of the second level.
Fig. 5 is the state sectional view in third level ram compression process.
Fig. 6 is the graph of a relation of the displacement of first order plunger and the opening area of 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-one-way valve;
9-tapered rod;
10-opening a;
11-opening b;
12-opening c;
13-hydraulic cylinder;
14-ring-shaped platform;
15-piston;
16-cylinder.
Embodiment
Below embodiments of the invention are elaborated: the present embodiment is implemented under premised on technical solution of the present invention, give detailed mode of execution and concrete operating process.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Please refer to Fig. 1 to Fig. 6.
Present embodiments provide a kind of gas Rapid reset multistage hydraulic buffer, comprise as lower component:
-be filled with the hydraulic cylinder of hydraulic oil;
-being filled with the cylinder of inert gas, described cylinder is arranged at the below of hydraulic cylinder, is connected between cylinder with hydraulic cylinder by ring-shaped platform; Described cylinder can make third level plunger, second level plunger and first order plunger get back to the position of no load condition after removing weight;
-being erected at the tapered rod of the hollow on ring-shaped platform, the hollow cavity of tapered rod is corresponding with the center hole of ring-shaped platform;
-third level plunger, described third level plunger inserts above-mentioned hydraulic cylinder vertically slidably, and is provided with the opening c inserted for tapered rod in the bottom of third level plunger;
-second level plunger, described second level plunger inserts above-mentioned third level plunger vertically slidably, and is provided with the opening b inserted for tapered rod in the bottom of second level plunger;
-first order plunger, described first order plunger inserts above-mentioned second level plunger vertically slidably, and is provided with the opening a that size is less than opening b in the bottom of first order plunger;
Described hydraulic cylinder, third level plunger, second level plunger and first order plunger seal socket from the bottom to top successively with one heart, and form hydraulic mechanism, described hydraulic mechanism inside is filled with hydraulic oil.
Further, the one-way valve flowed to for hydraulic control oil is provided with bottom described tapered rod.
Further, described first order plunger head is provided with cushion pad.
Further, described tapered rod sectional area along with level off to tapered rod bottom and increase gradually.
Further, be provided with oil through a between the bottom of described first order plunger and the inner chamber of second level plunger, described oil through a can avoid first order plunger and second level plunger to produce because of relative displacement being unfavorable for the vacuum cavity cushioned.
In like manner, further, oil through b is provided with between the bottom of described second level plunger and the inner chamber of third level plunger; Oil through c is provided with 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, and the other end of tapered rod is connected with cylinder; Looping throttle orifice between the opening a of described first order plunger base and the outer surface of tapered rod; In buffering course, the hydraulic oil of hydraulic mechanism inside can only enter the hollow cavity of tapered rod by throttle orifice; And in reseting procedure, a part of hydraulic oil be discharged in cylinder can be entered in hydraulic mechanism fast by one-way valve, make third level plunger, second level plunger and first order plunger can Rapid reset.
Further, the area of throttle orifice is relevant with stroke with the acceleration magnitude of magnitude of load, buffering course, therefore the diameter of tapered rod needs to carry out specific design according to performance requirement.
Further, described cylinder interior is provided with can along cylinder piston in axial sliding, the two end part of described piston and cylinder inner wall close contact; In buffering course, piston can inert gas in compression cylinder, thus absorbs and impact and stored energy; After impact load removes, hydraulic oil, under the effect of pressurized gas, is pushed back hydraulic mechanism by piston, thus realizes the reset of third level plunger, second level plunger and first order plunger.
Further, sealing mechanism is provided with between described cylinder and piston.
Further, described one-way 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, comprises hydraulic cylinder 13, cylinder 16, first order plunger 2, second level plunger 4, third level plunger 6, one-way valve 8 and tapered rod 9; Wherein first order plunger 2, second level plunger 4 and third level plunger 6 can be entrenched in oil hydraulic cylinder at above-below direction, and the diameter of these three grades of plungers reduces from outside to inside in turn, and superimposed setting in concentric manner each other.
Cylinder body is made up of hydraulic cylinder 13 and cylinder 16.Wherein, the hydraulic oil flowed out from first order plunger 2, second level plunger 4, third level plunger 6 and hydraulic cylinder 13 acts on piston 15 upper surface by tapered rod 9 hollow cavity, and the inert gas in compression cylinder 16.Tapered rod 9 is erected on ring-shaped platform 14, insertion opening b11 and opening c12, and in plunger decline process 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.Hydraulic oil in second level plunger 4 acts on the bottom of first order plunger 2, and plunger 2 can be stretched out completely, and this plunger can be slided 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.Hydraulic oil in third level plunger 6 acts on the bottom of second level plunger 4, and plunger 4 can be stretched out completely, and this plunger can be slided up and down.There is bottom third level plunger 6 opening c12 and oil through 7, and be full of hydraulic oil in this plunger.Hydraulic oil in hydraulic cylinder 13 acts on bottom third level plunger 6, and plunger 6 can be stretched out completely, and this plunger can be slided up and down.
In this hydraulic bjuffer, along with the decline of plunger, plunger 2, plunger 4, hydraulic oil in plunger 6 and hydraulic cylinder 13 enters in cylinder 16 by the cavity in tapered rod 9, now due to restriction effect that hydraulic oil is produced by the torus knot discharge orifice between opening a10 and tapered rod 9 outer surface, to the plunger 2 declined, plunger 4 and plunger 6 produce very large resistance, thus acquisition cushioning effect, simultaneously, along with plunger 2, the decline of plunger 4 and plunger 6, under the effect of tapered rod 9, the area of throttle orifice reduces gradually, the resistance of hydraulic oil will increase gradually, the result of its correspondence is plunger 2, the rate of descent of plunger 4 and plunger 6 will slow down gradually until plunger 2, the speed of plunger 4 and plunger 6 is zero.
In this buffer, one-way valve 8 is arranged on the bottom of tapered rod 9, and the hydraulic oil in buffering course in hydraulic cylinder 13 is not entered in tapered rod by one-way valve 8.When resetting, the oil liquid pressure in tapered rod 9 is greater than the oil liquid pressure in hydraulic cylinder 13, and the hydraulic oil in tapered rod 9 enters in hydraulic cylinder 13 by one-way valve.
Below the action of the hydraulic bjuffer with said structure is described.
After the cushion pad 1 (can adopt rubber pad) at weight and top collides.First, first order plunger 2, along the inwall slide downward of second level plunger 4, makes the oil liquid pressure in second level plunger 4, third level plunger 6 and hydraulic cylinder 13 raise.Due to the existence of one-way valve, hydraulic oil can only enter first order plunger 2 by the torus knot discharge orifice between opening a10 and tapered rod 9 outer surface, and enter cylinder 16 by the inner chamber of tapered rod 9, under the acting in conjunction of gas pressure and oil liquid pressure, play the effect of deceleration.
When first order plunger 2 completes stroke, the bottom of first order plunger 2 and the bottom of second level plunger 4 will come in contact.Then, first order plunger 2 moves downward with identical speed together with second level plunger 4.Similar with said process, when first order plunger 2 moves downward together with second level plunger 4, hydraulic oil in third level plunger 6 and hydraulic cylinder 13 enters in first order plunger 2 by the torus knot discharge orifice between opening a10 and tapered rod 9 outer surface, and enter cylinder 16 by the inner chamber of tapered rod 9, under the acting in conjunction 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 grades of plungers move downward together by with identical speed.While three grades of plungers together move downward, hydraulic oil in hydraulic cylinder 13 enters in first order plunger 2 by the torus knot discharge orifice between opening a10 and tapered rod 9 outer surface, cylinder 16 is entered by the inner chamber of tapered rod 9, under the acting in conjunction of gas pressure and oil liquid pressure, play the effect of deceleration.
The hydraulic oil entering cylinder 16 acts on the inert gas in piston 15 upper surface compression cylinder 16, plays the effect of buffering and stored energy.In whole buffering course, under the effect due to tapered rod 9, the area of throttle orifice reduces gradually, and the resistance from hydraulic oil will increase gradually, and consequently, the rate of descent of weight is slowly down to zero.
In addition, after removal weight, inert gas acts on piston 15 lower surface, piston 15 is moved upward, make the major part of the hydraulic oil in cylinder 16 enter hydraulic cylinder 13 by one-way valve 8 simultaneously, fraction hydraulic oil enters in plunger cavity by the inner chamber of tapered rod 9, makes plunger Quick-return to uncharge original state.
In buffering course, control rod 9 is inserted in opening a10, and form the throttle orifice of annular between opening a10 and tapered rod 9 outer surface, the area of throttle orifice changes with the change in displacement of plunger 2.During owing to working as weight with certain velocity collision hydraulic bjuffer, desirable retardation is certain value.Therefore, the relation between the displacement x of plunger 2 and throttle hole area A as shown in Figure 6.Thus, the design parameter of tapered rod can be obtained.
In the present embodiment:
Gas Rapid reset multistage hydraulic buffer, comprises the hydraulic cylinder being filled with hydraulic oil and the cylinder being filled with inert gas, axially can insert cylinder body slidably and be provided with in bottom opening third level plunger; Can axially insert third level plunger slidably and be provided with the second level plunger of opening in bottom; Can axially insert second level plunger slidably, and be provided with the first order plunger of opening in bottom; Erect on being arranged in hydraulic cylinder ring-shaped platform, and move downward in process at three grades of plungers the tapered rod inserting plunger opening; Be arranged on the bottom of tapered rod, make the one-way valve of hydraulic oil one-way flow and make three grades of plungers 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 along with level off to tapered rod bottom and increase gradually;
Cavity is had in above-mentioned tapered rod, when above-mentioned plunger is compressed, hydraulic oil in plunger and hydraulic cylinder enters cylinder by the cavity in tapered rod, and acts on the upper piston area in cylinder body, and then the inert gas (as nitrogen) in compression cylinder; One-way valve is arranged on the bottom of tapered rod, and makes the hydraulic oil in hydraulic cylinder not enter in tapered rod by one-way valve;
Three grades of plungers are arranged in oil hydraulic cylinder in the mode that can in axial direction stretch, and the diameter of plunger reduces gradually to interior outside having, and arranges in concentric manner each other;
Fluid leakage between three grades of plungers, is provided with seal arrangement between the outer wall of upper level plunger and the inwall of next stage plunger;
Fluid leakage between third level plunger and hydraulic cylinder, is provided with seal arrangement between the inwall of hydraulic cylinder and the outer wall of third level plunger;
Be provided with oil through in the bottom of upper level plunger and next stage plunger cavity, avoid producing vacuum area between this two-stage plunger;
Also oil through is provided with 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 Leakage Gas in cylinder, between piston and cylinder, there is seal arrangement;
Above-mentioned cushion pad is arranged on the top of first order plunger.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (9)
1. a gas Rapid reset multistage hydraulic buffer, is characterized in that, comprises as lower component:
-be filled with the hydraulic cylinder of hydraulic oil;
-being filled with the cylinder of inert gas, described cylinder is arranged at the below of hydraulic cylinder, is connected between cylinder with hydraulic cylinder by ring-shaped platform; Described cylinder can make third level plunger, second level plunger and first order plunger get back to the position of no load condition after removing weight;
-being erected at the tapered rod of the hollow on ring-shaped platform, the hollow cavity of tapered rod is corresponding with the center hole of ring-shaped platform;
-third level plunger, described third level plunger inserts above-mentioned hydraulic cylinder vertically slidably, and is provided with the opening c inserted for tapered rod in the bottom of third level plunger;
-second level plunger, described second level plunger inserts above-mentioned third level plunger vertically slidably, and is provided with the opening b inserted for tapered rod in the bottom of second level plunger;
-first order plunger, described first order plunger inserts above-mentioned second level plunger vertically slidably, and is provided with the opening a that size is less than opening b in the bottom of first order plunger;
Described hydraulic cylinder, third level plunger, second level plunger and first order plunger seal socket from the bottom to top successively with one heart, and form hydraulic mechanism, described hydraulic mechanism inside is filled with hydraulic oil.
2. gas Rapid reset multistage hydraulic buffer according to claim 1, is characterized in that, is provided with the one-way valve flowed to for hydraulic control oil bottom described tapered rod.
3. gas Rapid reset multistage hydraulic buffer according to claim 1, it is characterized in that, described first order plunger head is provided with cushion pad.
4. gas Rapid reset multistage hydraulic buffer according to claim 1, is characterized in that, the sectional area of described tapered rod along with level off to tapered rod bottom and increase gradually.
5. gas Rapid reset multistage hydraulic buffer according to claim 1, it is characterized in that, be provided with oil through a between the bottom of described first order plunger and the inner chamber of second level plunger, described oil through a can avoid first order plunger and second level plunger to produce because of relative displacement being unfavorable for the vacuum cavity cushioned.
6. gas Rapid reset multistage hydraulic buffer according to claim 1 or 5, is characterized in that, be provided with oil through b between the bottom of described second level plunger and the inner chamber of third level plunger; Oil through c is provided with between the bottom of described third level plunger and hydraulic cylinder.
7. gas Rapid reset multistage hydraulic buffer according to claim 2, it is characterized in that, one end of described tapered rod is connected with the inner chamber of first order plunger, and the other end of tapered rod is connected with cylinder; Looping throttle orifice between the opening a of described first order plunger base and the outer surface of tapered rod; In buffering course, the hydraulic oil of hydraulic mechanism inside can only enter the hollow cavity of tapered rod by throttle orifice; And in reseting procedure, a part of hydraulic oil be discharged in cylinder can be entered in hydraulic mechanism fast by one-way valve, make third level plunger, second level plunger and first order plunger can Rapid reset.
8. the gas Rapid reset multistage hydraulic buffer according to claim 1 or 7, is characterized in that, described cylinder interior is provided with can along cylinder piston in axial sliding, the outer rim of described piston and cylinder inner wall close contact; In buffering course, piston can inert gas in compression cylinder, thus absorbs and impact and stored energy; After impact load removes, hydraulic oil, under the effect of pressurized gas, is pushed back hydraulic mechanism by piston, thus realizes the reset of third level plunger, second level plunger and first order plunger.
9. gas Rapid reset multistage hydraulic buffer according to claim 8, is characterized in that, be provided with sealing mechanism between described cylinder and piston.
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 |
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| 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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| CN104675901A true CN104675901A (en) | 2015-06-03 |
| CN104675901B CN104675901B (en) | 2017-02-15 |
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| CN201310638111.0A Active CN104675901B (en) | 2013-12-02 | 2013-12-02 | Gas rapid returning multi-stage hydraulic buffer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105240339A (en) * | 2015-10-22 | 2016-01-13 | 北京北机机电工业有限责任公司 | Vibration cylinder |
| CN106369010A (en) * | 2016-10-27 | 2017-02-01 | 华南理工大学 | Adjustable high-speed cylinder buffer device and method |
| 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 |
| JP2022519029A (en) * | 2019-01-24 | 2022-03-18 | 藍箭航天空間科技股▲ふん▼有限公司 | Launch vehicle, and multi-stage pneumatically supported cylinder for recovering the launch vehicle |
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| CN203009675U (en) * | 2012-11-07 | 2013-06-19 | 程林森 | Knitting machine head buffer structure |
| CN103291804A (en) * | 2013-06-25 | 2013-09-11 | 苏州唐氏机械制造有限公司 | Multi-stage buffer capable of automatically regulating buffering stage number |
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| JPH01250633A (en) * | 1988-03-30 | 1989-10-05 | Sumitomo Precision Prod Co Ltd | 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105240339A (en) * | 2015-10-22 | 2016-01-13 | 北京北机机电工业有限责任公司 | Vibration cylinder |
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| 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 |
| JP2022519029A (en) * | 2019-01-24 | 2022-03-18 | 藍箭航天空間科技股▲ふん▼有限公司 | Launch vehicle, and multi-stage pneumatically supported cylinder for recovering the launch vehicle |
| JP7253061B2 (en) | 2019-01-24 | 2023-04-05 | 藍箭航天空間科技股▲ふん▼有限公司 | Launch vehicle and multi-stage pneumatic support cylinders for retrieving the launch vehicle |
| 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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| CN104675901B (en) | 2017-02-15 |
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