CN102261355B - Rotary actuation device with buffer structure - Google Patents
Rotary actuation device with buffer structure Download PDFInfo
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- CN102261355B CN102261355B CN201110171215.6A CN201110171215A CN102261355B CN 102261355 B CN102261355 B CN 102261355B CN 201110171215 A CN201110171215 A CN 201110171215A CN 102261355 B CN102261355 B CN 102261355B
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Abstract
The invention discloses a rotary actuation device with a buffer structure. The rotary actuation device comprises two air cylinders, and front pistons and rear pistons which are arranged in piston cavities of the air cylinders, wherein gear racks are arranged on the middle parts of the front pistons and the rear pistons; the gear racks are engaged with a gear provided with a power output shaft; the two air cylinders are symmetric to both sides of the gear; both ends of each air cylinder are provided with a front cover and a rear cover; an air connection opening is formed on each front cover; front piston cavities and the air connection openings of the air cylinders are communicated with each other through front air paths arranged in the front covers; the air connection openings are connected with rear air paths; flow control mechanisms are arranged at connected positions of the air connection openings and the rear air paths; and cylinder wall air holes communicated with the front piston cavities are formed in the rear air paths close to the flow control mechanisms. By the rotary actuation device with the buffer structure, the problems of low equipment stability, heavy noise pollution, easiness in abrasion and short service life caused by large impact force in the pneumatic rotary actuation device in the prior art can be solved effectively; and the rotary actuation device has extremely high social and economic benefits.
Description
Technical field
The present invention relates to a kind ofly for driving the rotary type actuator of various machineries, relate in particular to a kind of actuator of the revolution with buffer structure.
Background technique
By the power-actuated rotary type actuator of air pressure, be to reciprocatingly slide in cylinder by the piston with tooth bar, thereby driven gear rotate outputting power.In this rotary type actuator of prior art, the impact force produced due to inertia energy when stroke terminal stops in order to absorb above-mentioned piston, usually adopt outside mechanical type damping mechanism be set.But so mechanical damping mechanism exists while stopping that the wearing and tearing of sending impulsive sound, being produced by abrasion in the part of impacting easily develop, the part of buffer etc. is projected into outside and form the problem of obstacle.Open day is September 5 calendar year 2001, the patent document that publication number is CN1311399A discloses a kind of rotation apparatus with damping mechanism, and it has the tooth bar back and forth driven by air pressure: for stopping at just contrary at least one party's stroke end damping mechanism with making above-mentioned tooth bar buffering; Above-mentioned damping mechanism comprises relief opening, flow rate adjusting mechanism, cushion seal circle, this relief opening in the position more distolateral than the more close chamber of above-mentioned oral pore to pressure chamber's opening, the flow of the exhaust that above-mentioned flow rate adjusting mechanism restriction is discharged from this relief opening, above-mentioned cushion seal circle is arranged on the outer circumferential face of upper piston, when this piston soon arrives the stroke end, above-mentioned oral pore and pressure chamber are cut off and by the air in this pressure chamber from relief opening by flow rate adjusting mechanism, discharge.This structure adopts the gas buffer structure, close the exhaust port be arranged on casing wall when piston approaches stroke terminal, slow down the velocity of discharge of air in cylinder, thereby play the effect of buffering, but this structure has adopted traditional seal ring, irregular seal ring, the part combinations such as buffering screw realize buffering, too complex on structure, the manufacturing difficulty, cost of production is very high, assemble loaded down with trivial details, and accident susceptibility while adjusting the buffering screw.On the other hand, the cylinder of this structure when closing exhaust port because extraction flow alters a great deal at short notice, single buffering pore is because the length made progress at cylinder axis is very short, therefore when piston moves in a short period of time just by its sealing, therefore the pressure in piston cavity sharply increases at short notice, cause the unexpected variation of piston traveling speed, this structure changes at short notice excessive by the pressure of piston cavity and Cylinder Vibration that cause is very large, therefore, the buffering of this structure is steady not, because the stabilization of equipment performance that impact force causes by force is poor, noise pollution is serious, equipment attrition reaches soon working life short problem and is not well solved.
Summary of the invention
The buffer structure complexity that the objective of the invention is the pneumatic rotary actuator for solving prior art, the manufacturing difficulty, cost of production is very high, assemble loaded down with trivial details, and the problem such as accident susceptibility and a kind of simple in structure, manufacturing is easy, cost of production is low actuator of the revolution with buffer structure is provided while adjusting the buffering screw.
Another object of the present invention is that pneumatic rotary actuator for solving prior art is because the stabilization of equipment performance that impact force causes by force is poor, noise pollution is serious, equipment attrition short problem in fast and working life and a kind of stable working is provided, noise is low, the actuator of the revolution with buffer structure of long service life.
The present invention solves the problems of the technologies described above adopted technological scheme to be: a kind of actuator of the revolution with buffer structure, comprise cylinder and be arranged on the sliding device in the cylinder piston chamber, the two ends of sliding device arrange respectively secondary piston and back piston, secondary piston is connected with the tooth bar of back piston by the middle part setting of sliding device, tooth bar and the gear engagement that is provided with pto＝power take-off, described cylinder is two, be symmetrically set in the both sides of described gear, the two ends of cylinder are respectively equipped with protecgulum and bonnet, protecgulum is provided with and connects gas port, the secondary piston chamber of cylinder with connect gas port and be communicated with by the front gas circuit arranged in protecgulum, connect on gas port and also be connected with rear gas circuit, rear gas circuit is connected and composed by the bonnet gas circuit that is arranged on the casing wall gas circuit on the cylinder casing wall and be arranged on bonnet, the gas port that connects of a cylinder passes through the casing wall gas circuit, the bonnet gas circuit is communicated with the back piston chamber of another cylinder, the joint that connects gas port and casing wall gas circuit is provided with flow control mechanism, casing wall gas circuit near flow control mechanism is provided with the casing wall pore be communicated with the secondary piston chamber, the two ends of secondary piston are respectively equipped with front seal ring and increasing back sealing ring.In the gear bilateral symmetry that is provided with pto＝power take-off, upper and lower two cylinders are set, when the gas port air inlet Shi， mono-road gas that connects of upper cylinder enters the secondary piston chamber of upper cylinder by front gas circuit, promote piston in upper cylinder to the bonnet side shifting; Another road gas enters rear gas circuit simultaneously, enters the back piston chamber of lower cylinder by flow control mechanism, casing wall gas circuit and bonnet gas circuit, promotes the piston forward lid side shifting in lower cylinder.And the piston in upper cylinder is during to the bonnet side shifting, the compressed rear gas circuit that enters lower cylinder of upper cylinder back piston intracavity gas, this part gas is by bonnet gas circuit and the casing wall gas circuit of lower cylinder, when approaching the front end of lower cylinder, because the casing wall gas circuit is provided with the casing wall pore be communicated with cylinder secondary piston chamber, this part gas is divided into two-way, and the flow control mechanism of leading up on the casing wall gas circuit is discharged by the gas port that connects of lower cylinder; Another road, by casing wall pore on the casing wall gas circuit, enters the secondary piston chamber of lower cylinder, and discharges by gas circuit before lower cylinder.When the secondary piston of lower cylinder moves near protecgulum, front seal ring on secondary piston is crossed the casing wall pore on cylinder wall and is made the sealing of casing wall pore, upper cylinder back piston intracavity gas can not be discharged and can only discharge by the throttle orifice on flow control mechanism by the casing wall pore, because the throttle orifice air displacement on flow control mechanism is very little, therefore upper cylinder back piston intracavity gas discharge capacity significantly reduces, pressure in upper cylinder back piston chamber raises because air displacement reduces, thereby the back piston in upper cylinder is moved and plays inhibition, play buffer function while piston being approached to terminal.Piston movement direction in such two cylinders is contrary, by the rack drives gear, rotate, upper and lower two cylinders connect gas port air intake-exhaust in turn, gear is ceaselessly forward and reverse rotation, thus outputting power.With the buffer structure of prior art, compare, of the present invention simple in structure, manufacturing is easy, cost of production is low, has obvious economic benefit.
As preferably, flow control mechanism comprises the buffering diaphragm that is arranged on the through flow hole on protecgulum and is arranged on casing wall gas circuit end, installed diaphragm chamber near through flow hole on the casing wall gas circuit, the buffering diaphragm is arranged in diaphragm chamber, be provided with throttle orifice in the middle of the buffering diaphragm, the buffering diaphragm is provided with air inlet duct away from the one side of protecgulum, and the diameter of described throttle orifice is less than the diameter of through flow hole.In the end of casing wall gas circuit, the buffering diaphragm is set, during air inlet, press and leave through flow hole after the buffering diaphragm, now air-flow can enter the casing wall gas circuit from surrounding and the air inlet duct that arranges of buffering diaphragm of buffering diaphragm through through flow hole, throttle orifice on the buffering diaphragm also can pass through the part air-flow, so air inflow is larger.During exhaust, before the buffering diaphragm, compress to paste through flow hole, now air-flow can only pass through by the throttle orifice from the buffering diaphragm, so gas output is very restricted, and enough bufferings are provided in the time of can moving on near terminal for piston.The buffering diaphragm is done reciprocal " class piston " motion under compressed-air actuated effect in diaphragm chamber, thereby realizes the one-way buffer of gas.This flow control mechanism has that air inlet is large, and the one-way characteristics that exhaust is little, be suitable for requirement intake velocity cylinder faster, and these cylinders are applied to the application that requires the work starting speed fast usually.
Flow control mechanism also can adopt simple structure, and flow control mechanism is the throttle orifice be arranged on protecgulum.Throttle orifice is an aperture, throttle orifice on the buffering diaphragm of its aperture and aforementioned schemes is close, all there is throttling action in this scheme when air inlet and exhaust, be that air inlet starts can realize buffering with the exhaust end, its advantage is easy to process, cost is low, is suitable for starting and stops all needing the occasion cushioned.
Casing wall pore on the cylinder casing wall also can adopt porous structure, adopt the metering hole structure, the casing wall pore is 3 to 5 metering holes, and metering hole is arranged in a linear on the casing wall of cylinder is axial, and the seal distance that secondary piston is gone forward between increasing back sealing ring is greater than the casing wall gas circuit length at metering hole place.The casing wall gas circuit length that the seal distance that secondary piston is gone forward between increasing back sealing ring is greater than the metering hole place is that the secondary piston of cylinder while guaranteeing end of travel can seal all metering holes fully.With single structure casing wall pore, compare, the structure of this programme is that original disposable casing wall pore of closing is divided into repeatedly and closes when piston is moved, and there is certain time interval between closing for twice, thereby make stepped the increasing progressively of pressure in the secondary piston chamber, therefore, pressure in piston cavity changes a relatively level and smooth process, thereby realize smoothing buffer, with this, reduce because the pressure in the secondary piston chamber sharply increases the impact caused, reduce vibration and the noise of cylinder, the working life of extension device.And the single buffering pore of prior art is very short due to the length made progress at cylinder axis, therefore when piston moves in a short period of time just by its sealing, therefore the pressure of piston cavity increases at short notice fast, by the pressure of piston cavity, change at short notice excessive and Cylinder Vibration that cause is relatively very large, the work of cylinder is steady not, noise is large, has also affected to a certain extent the working life of cylinder simultaneously.
As the preferred version of above-mentioned porous scheme, be greater than the metering hole diameter of close protecgulum away from the metering hole diameter of protecgulum, the cross-section area of described metering hole is linear increment.Although metering hole also can adopt the equal aperture structure, but compare with the scheme of a plurality of equal aperture metering holes, the metering hole cross-section area of this programme covers backward direction from protecgulum and is linear increment, for example, when 5 metering holes are set, the cross-section area ratio of metering hole can be 1 to 2 to 3 to 4 to 5 relation.While adopting this structure, pressure variation in corresponding secondary piston chamber is first big after small stepped trend, pressure when this structure can make piston approach terminal in the secondary piston chamber changes relatively mild, be conducive to eliminate better the impact shock of cylinder, reduce noise, the working life of extension device.
As preferably, air cylinder front cover and the bonnet of gear both sides all are integrated, and connect gas port, front gas circuit and the casing wall gas circuit corresponding with the both sides cylinder are symplex structure.Two cylinders adopt shared integrated type protecgulum and integrated type bonnet to be conducive to the setting of gas circuit, can simplified structures, and symplex structure can cut down finished cost.
The invention has the beneficial effects as follows: it has solved the pneumatic rotary actuator complex structure of prior art effectively, the manufacturing difficulty, the problem that cost of production is very high, also solved the pneumatic rotary actuator of prior art because the stabilization of equipment performance that impact force causes by force is poor, noise pollution is serious, equipment attrition reaches short problem in working life soon, revolution actuator stable working of the present invention, noise is little, long service life and simple in structure, cost of production is low, has very high social benefit and economic benefit.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation of the revolution actuator embodiment 1 of band buffer structure of the present invention;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the partial enlarged drawing at B place in Fig. 2;
Fig. 4 is a kind of structural representation of the revolution actuator embodiment 2 of band buffer structure of the present invention;
Fig. 5 is a kind of structural representation of the revolution actuator embodiment 3 of band buffer structure of the present invention;
Fig. 6 is the partial enlarged drawing at C place in Fig. 5;
Fig. 7 is the partial enlarged drawing at D place in Fig. 6.
In figure: 1. secondary piston, 2. back piston, 3. tooth bar, 4. gear, 5. protecgulum, 6. bonnet, 7. connect gas port, 8. the secondary piston chamber, 9. front gas circuit, 10. casing wall gas circuit, 11. bonnet gas circuits, 12. back piston chambeies, 13. flow control mechanism, 14. casing wall pores, 15. front seal rings, 16. increasing back sealing rings, 17. through flow hole, 18. buffering diaphragms, 19. diaphragm chamber, 20. throttle orifice, 21. air inlet ducts, 22. metering holes.
Embodiment
Below by embodiment, and by reference to the accompanying drawings the embodiment of technical solution of the present invention is further described.
In the embodiment 1 shown in Fig. 1, a kind of actuator of the revolution with buffer structure, comprise cylinder and be arranged on the sliding device in the cylinder piston chamber, the two ends of sliding device arrange respectively secondary piston 1 and back piston 2, secondary piston is connected with the tooth bar 3 of back piston by the middle part setting of sliding device, tooth bar and gear 4 engagements that are provided with pto＝power take-off, described cylinder is two, be symmetrically set in the both sides of described gear, the plane at two cylinder-bore axis places is vertical with the axis of gear, the two ends of cylinder are respectively equipped with protecgulum 5 and bonnet 6, air cylinder front cover and the bonnet of gear both sides all are integrated, the protecgulum of two cylinders is structure as a whole, the bonnet of two cylinders also is structure as a whole.Protecgulum is provided with and connects gas port 7, the secondary piston chamber 8 of cylinder with connect gas port and be communicated with by the front gas circuit 9 arranged in protecgulum, it is that straight gas circuit connects and composes that front gas circuit is parallel to cylinder-bore axis by one section horizontal gas circuit perpendicular to cylinder-bore axis and one section.Connect on gas port and also be connected with rear gas circuit, rear gas circuit by being arranged on the cylinder casing wall, the casing wall gas circuit 10 parallel with cylinder-bore axis and the bonnet gas circuit 11 be arranged on bonnet connect and compose, the gas port that connects of a cylinder is communicated with the back piston chamber 12 of another cylinder by casing wall gas circuit, bonnet gas circuit, and connect gas port, front gas circuit and casing wall gas circuit that the both sides cylinder is corresponding are symplex structure.The joint that connects gas port and casing wall gas circuit is provided with flow control mechanism 13, the buffering diaphragm 18(that flow control mechanism comprises the through flow hole 17 be arranged on protecgulum and is arranged on casing wall gas circuit end is shown in Fig. 2, Fig. 3), position near through flow hole on the casing wall gas circuit is provided with diaphragm chamber 19, the buffering diaphragm is arranged in diaphragm chamber, be provided with throttle orifice 20 in the middle of the buffering diaphragm, the buffering diaphragm is provided with air inlet duct 21 away from the one side of protecgulum, and the diameter of throttle orifice is less than the diameter of through flow hole.Casing wall gas circuit near flow control mechanism is provided with the casing wall pore 14 be communicated with the secondary piston chamber, and the casing wall pore is one, and the two ends of secondary piston are respectively equipped with front seal ring 15 and increasing back sealing ring 16, and the end of back piston also is provided with a seal ring.This embodiment realizes the buffering of discharge end LAP.
In the embodiment 2 shown in Fig. 4, flow control mechanism is that the throttle orifice 20(be arranged on protecgulum is shown in Fig. 7), all the other are identical with embodiment 1.What this embodiment realized is that air inlet starts the buffering of LAP and the buffering of discharge end LAP.
In the embodiment 3 shown in Fig. 5, the casing wall pore is 3 metering holes 22, on the casing wall of cylinder is axial, be arranged in a linear, metering hole diameter away from protecgulum is greater than the metering hole diameter near protecgulum, the cross-section area of described metering hole covers backward direction from protecgulum and is linear increment, be 1 to 2 than 3(, to see Fig. 6), the distance that secondary piston is gone forward between increasing back sealing ring is greater than the casing wall gas circuit length at metering hole place, the seal distance before and after between seal ring is greater than the distance between the maximum hole wall of the metering hole in the both sides, front and back, and all the other are identical with embodiment 2.What this embodiment realized is that air inlet starts the buffering of LAP and the mild buffering of discharge end LAP.
When the casing wall pore adopts the scheme of a plurality of metering holes, metering hole also can adopt the equal aperture structure, forms new embodiment.
During with the work of the revolution actuator of buffer structure, when the gas port air inlet Shi， mono-road gas that connects of upper cylinder enters the secondary piston chamber of upper cylinder by front gas circuit, promote piston in upper cylinder to the bonnet side shifting; Another road gas enters rear gas circuit, enters the back piston chamber of lower cylinder by flow control mechanism, casing wall gas circuit and bonnet gas circuit, promotes the piston forward lid side shifting in lower cylinder.And the piston in upper cylinder is during to the bonnet side shifting, the compressed rear gas circuit that enters lower cylinder of upper cylinder back piston intracavity gas, this part gas is by bonnet gas circuit and the casing wall gas circuit of lower cylinder, when approaching the front end of lower cylinder, because the casing wall gas circuit is provided with the casing wall pore be communicated with cylinder secondary piston chamber, this part gas is divided into two-way, and the flow control mechanism of leading up on the casing wall gas circuit is discharged by the gas port that connects of lower cylinder; Another road, by casing wall pore on the casing wall gas circuit, enters the secondary piston chamber of lower cylinder, and discharges by gas circuit before lower cylinder.Piston movement direction in such two cylinders is contrary, by the rack drives gear, rotate, upper and lower two cylinders connect gas port air intake-exhaust in turn, gear is ceaselessly forward and reverse rotation, thus outputting power.
When the secondary piston of lower cylinder moves near protecgulum, front seal ring on secondary piston is crossed the casing wall pore on cylinder wall and is made the sealing of casing wall pore, upper cylinder back piston intracavity gas can not be discharged and can only discharge by flow control mechanism by the casing wall pore, because the air displacement of flow control mechanism is less, therefore upper cylinder back piston intracavity gas discharge capacity significantly reduces, pressure in upper cylinder back piston chamber raises because air displacement reduces, thereby the back piston in upper cylinder is moved and plays inhibition, play buffer function while piston being approached to terminal.When the casing wall pore is a plurality of metering hole, because metering hole is arranged in a linear on the casing wall of cylinder is axial, and the seal distance that secondary piston is gone forward between increasing back sealing ring is greater than the casing wall gas circuit length at metering hole place.With single casing wall pore, compare, this structure is that original disposable casing wall pore of closing is divided into repeatedly and closes when piston is moved, and there is certain time interval between closing for twice, thereby make stepped the increasing progressively of pressure in the secondary piston chamber, therefore, the pressure in piston cavity changes a relatively level and smooth process, thereby realize smoothing buffer, reduce because the pressure in the secondary piston chamber sharply increases the impact caused with this, reduce vibration and the noise of cylinder, the working life of extension device.
Claims (5)
1. the actuator of the revolution with buffer structure, comprise cylinder and be arranged on the sliding device in the cylinder piston chamber, the two ends of sliding device arrange respectively secondary piston and back piston, secondary piston is connected with the tooth bar of back piston by the middle part setting of sliding device, tooth bar and the gear engagement that is provided with pto＝power take-off, it is characterized in that: described cylinder is two, be symmetrically set in the both sides of described gear (4), the two ends of cylinder are respectively equipped with protecgulum (5) and bonnet (6), protecgulum is provided with and connects gas port (7), the secondary piston chamber (8) of cylinder with connect gas port and be communicated with by the front gas circuit (9) arranged in protecgulum, connect on gas port and also be connected with rear gas circuit, rear gas circuit is connected and composed by the bonnet gas circuit (11) that is arranged on the casing wall gas circuit (10) on the cylinder casing wall and be arranged on bonnet, the gas port that connects of a cylinder passes through the casing wall gas circuit, the bonnet gas circuit is communicated with the back piston chamber (12) of another cylinder, the joint that connects gas port and casing wall gas circuit is provided with flow control mechanism (13), casing wall gas circuit near flow control mechanism is provided with the casing wall pore (14) be communicated with the secondary piston chamber, the two ends of secondary piston are respectively equipped with front seal ring (15) and increasing back sealing ring (16), described flow control mechanism comprises the through flow hole (17) be arranged on protecgulum and the buffering diaphragm (18) that is arranged on casing wall gas circuit end, installed diaphragm chamber (19) near through flow hole on the casing wall gas circuit, the buffering diaphragm is arranged in diaphragm chamber, be provided with throttle orifice (20) in the middle of the buffering diaphragm, the buffering diaphragm is provided with air inlet duct (21) away from the one side of protecgulum, and the diameter of described throttle orifice is less than the diameter of through flow hole.
2. the actuator of the revolution with buffer structure according to claim 1, it is characterized in that the casing wall pore is 3 to 5 metering holes, metering hole is arranged in a linear on the casing wall of cylinder is axial, and the seal distance that secondary piston is gone forward between increasing back sealing ring is greater than the casing wall gas circuit length at metering hole place.
3. the actuator of the revolution with buffer structure according to claim 2, is characterized in that being greater than the metering hole diameter near protecgulum away from the metering hole diameter of protecgulum, and the cross-section area of described metering hole is linear increment.
4. according to claim 1 with the revolution actuator of buffer structure, it is characterized in that the air cylinder front cover of gear both sides and bonnet all are integrated, connect gas port, front gas circuit and the casing wall gas circuit corresponding with the both sides cylinder are symplex structure.
5. according to claim 2 with the revolution actuator of buffer structure, it is characterized in that the air cylinder front cover of gear both sides and bonnet all are integrated, connect gas port, front gas circuit and the casing wall gas circuit corresponding with the both sides cylinder are symplex structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110171215.6A CN102261355B (en) | 2011-06-23 | 2011-06-23 | Rotary actuation device with buffer structure |
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| CN201110171215.6A CN102261355B (en) | 2011-06-23 | 2011-06-23 | Rotary actuation device with buffer structure |
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| CN102261355A CN102261355A (en) | 2011-11-30 |
| CN102261355B true CN102261355B (en) | 2014-01-08 |
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| CN201110171215.6A Active CN102261355B (en) | 2011-06-23 | 2011-06-23 | Rotary actuation device with buffer structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418722A (en) * | 2011-12-08 | 2012-04-18 | 海卓泰克液压技术（苏州）有限公司 | Oil quantity control device and air cylinder |
| CN104421247B (en) * | 2014-07-09 | 2016-06-22 | 宁波亚德客自动化工业有限公司 | A kind of cylinder trunnion support structure |
| CN104564899B (en) * | 2014-12-31 | 2017-05-03 | 中船重工中南装备有限责任公司 | Gear and rack cylinder with spring buffering function |
| CN115163604B (en) * | 2022-05-23 | 2023-06-16 | 马鞍山市天成液压机械制造有限公司 | Vibration reduction hydraulic cylinder with buffering capacity |
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| US3447423A (en) * | 1966-08-10 | 1969-06-03 | Mathews Eng Co Ltd E | Rotary fluid pressure actuators |
| FR2244925A1 (en) * | 1973-09-20 | 1975-04-18 | Renault | Shock absorber for end of piston travel - cylinder sleeve has outlet orifices to annular chambers |
| DE19532457A1 (en) * | 1995-09-04 | 1997-03-06 | Ptm Produktion Tech Mechanisch | Slewing equipment with pneumatic drive unit and hydraulic system |
| CN1290820A (en) * | 1999-10-01 | 2001-04-11 | 速睦喜股份有限公司 | Linear driver with air buffer machanism |
| CN101676571A (en) * | 2008-09-18 | 2010-03-24 | Smc株式会社 | Double rack and pinion oscillating device |
| CN202118025U (en) * | 2011-06-23 | 2012-01-18 | 宁波亚德客自动化工业有限公司 | Rotation actuation device with buffering structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3469525B2 (en) * | 2000-03-03 | 2003-11-25 | Ｓｍｃ株式会社 | Pneumatic rotary actuator with cushion mechanism |
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2011
- 2011-06-23 CN CN201110171215.6A patent/CN102261355B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3447423A (en) * | 1966-08-10 | 1969-06-03 | Mathews Eng Co Ltd E | Rotary fluid pressure actuators |
| FR2244925A1 (en) * | 1973-09-20 | 1975-04-18 | Renault | Shock absorber for end of piston travel - cylinder sleeve has outlet orifices to annular chambers |
| DE19532457A1 (en) * | 1995-09-04 | 1997-03-06 | Ptm Produktion Tech Mechanisch | Slewing equipment with pneumatic drive unit and hydraulic system |
| CN1290820A (en) * | 1999-10-01 | 2001-04-11 | 速睦喜股份有限公司 | Linear driver with air buffer machanism |
| CN101676571A (en) * | 2008-09-18 | 2010-03-24 | Smc株式会社 | Double rack and pinion oscillating device |
| CN202118025U (en) * | 2011-06-23 | 2012-01-18 | 宁波亚德客自动化工业有限公司 | Rotation actuation device with buffering structure |
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Address after: Zhejiang province Fenghua City Siming road 315500 High-tech Park No. 88 Applicant after: Ningbo Yadeke Automatic Chemical Industry Co., Ltd. Address before: 315500 Zhejiang Province, Ningbo City Siming road Fenghua high tech park, No. 88 Applicant before: Ningbo Yadeke Automatic Chemical Industry Co., Ltd. |
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