CN2769581Y - Gas-liquid booster cylinder - Google Patents
Gas-liquid booster cylinder Download PDFInfo
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- CN2769581Y CN2769581Y CN 200520069735 CN200520069735U CN2769581Y CN 2769581 Y CN2769581 Y CN 2769581Y CN 200520069735 CN200520069735 CN 200520069735 CN 200520069735 U CN200520069735 U CN 200520069735U CN 2769581 Y CN2769581 Y CN 2769581Y
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Abstract
The utility model relates to a gas-liquid pressurizing cylinder which is formed by the method that a front air cylinder is axially connected with a back air cylinder in series by a middle hydraulic cavity, wherein the inside of the air cylinder is provided with a working piston, and a front air chamber and a back air chamber are formed by the working piston and a cylinder body; the two air chambers are respectively provided with a compressed air interface; the inside of the back air cylinder is provided with a pneumatic piston, and the pneumatic piston is provided with a pressurizing rod in a forward lead-out way; a separator piston is sheathed on the pressurizing rod, and the middle hydraulic cavity is arranged between the separator piston and a hydraulic plug; the hydraulic cavity is divided into a high-pressure oil cavity and a low-pressure oil cavity, and the high-pressure oil cavity and the low-pressure oil cavity are communicated with each other through a pressurizing port; the pressurizing port is matched with the pressurizing rod in a sealing way. The utility model is characterized in that an air spring structure is arranged between the pneumatic piston and the separator piston; the air spring structure is composed of an air chamber formed from a pneumatic piston, a separator piston and the cylinder body; the air chamber is provided with an air inlet and an air outlet; the air inlet is connected with a compressed air source via a pressure control valve, and the air outlet is connected with the atmosphere via an overflow valve. In the utility model, a mechanical spring of the prior art is replaced by the unique air spring structure; thus, the air-liquid pressurizing cylinder structure can be much more reasonable, the working noise is reduced and the service life is extended.
Description
Technical field
The utility model relates to a kind of pressure actuator, is specifically related to a kind of pressurized cylinder that air pressure, hydraulic pressure are combined.
Background technique
Pneumatic Transmission and hydraulic transmission are mechanically operated main modes.Pneumatic Transmission and hydraulic transmission respectively have excellent lacking on characteristic, Pneumatic Transmission has the fast advantage of travelling speed, but its power is little; Hydraulicdriven advantage is that power is big, but its travelling speed is slow.
Therefore, people have designed a kind of pneumohydraulic pressure-cylinder that air pressure, hydraulic pressure are combined, this cylinder combines the advantage of air pressure and hydraulic pressure, can realize that F.F.-worker advances-circulation of the ideal operation of rewind down, in the industries such as it is widely used in punching press, shears, press-fits, no rivet connection.It is 94229014.3 that Chinese patent discloses an application number May 31 nineteen ninety-five, name is called the utility model patent of " gas-liquid pressure-boosting drive unit ", this patent has certain representativeness in existing gas-liquid pressure-boosting cylinder structure, referring to shown in Figure 1, this device mainly is made of former and later two separable cylinder bodies that connect by the transverse section each other, be provided with a pneumatic disk-shaped piston 1 in the cylinder body of rear section, with booster rod 2 that disk-shaped piston 1 is connected on be with a separator piston 3, between disk-shaped piston 2 and separator piston 3, be provided with mechanical spring 24, be equipped with vent 25 being loaded with on the space casing wall of spring 24; Being provided with working piston 4 in the forward part cylinder body, is oil pocket between the section of working piston 4 and separator piston 3; This oil pocket is separated into low pressure oil pocket 18 and high-voltage oil cavity 17 by section, and they are communicated with by boost port 19.On principle, can be described as the front portion, two cylinders in rear portion connect and compose by oil pocket, during work, elder generation's forward part cylinder body ventilation, working piston 4 is F.F. forward under gas pressure, when working piston 4 anterior push rods are run into machining object, rear section cylinder body air inlet, disk-shaped piston 1 travels forward together with booster rod 2, when booster rod 2 enters boost port 19, closely cooperates with boost port 19, oil in the high-voltage oil cavity 17 is pressurized bar 2 and extrudes, produce high pressure, this high pressure acts on working piston 4 afterbodys, and working piston 4 is advanced with worker energetically; After the worker advanced to finish, the forward part cylinder body was oppositely ventilated, and working piston 4 is rewind down under gas pressure, and piston promotes booster rod 2, separator piston 3 and disk-shaped piston 1 simultaneously and resets.Spring in this device mainly plays two functions: the one, and precompressed is pressed into high-voltage oil cavity with the hydraulic oil in the low pressure oil pocket in the F.F. process; The 2nd, help to reset, disk-shaped piston after advancing to finish, the worker is resetted.What all adopt in the existing pneumohydraulic pressure-cylinder is mechanical coil spring, therefore there is following shortcoming in they: 1, top cylinder body air inlet promotion push rod stretches in the process of high-voltage oil cavity when the worker advances, spring can have been offset a part of power, because of the internal losses of power in the mechanical spring compression process is that increasing with amount of deformation increases, when camber of spring was big more, the power of consumption was just many more.2, the fatigue life of mechanical spring is limited.3, mechanical spring is in case manufacturing is finished, and its mechanical constant, decrement have just determined that the pressure of its generation is unadjustable, can only change spring in the time of adjusting pressure.4, mechanical spring has vibration in compression when resetting, contacts the generation noise with sidewall, even can scratch the surface of other parts.5, to be provided with the spring fixed groove on disk-shaped piston and the annular piston, make the processed complexization of these two parts.
Summary of the invention
The utility model purpose is the angle from the spring members that improves pneumohydraulic pressure-cylinder, a kind of novel pneumohydraulic pressure-cylinder is provided, has made the pressure of spring stepless adjustable, constant pressure, internal pressure loss reduces, thereby makes whole pressurized cylinder more reasonable structure, work more reliable.
For achieving the above object, the technical solution adopted in the utility model is: a kind of pneumohydraulic pressure-cylinder axially is connected in series by the middle part hydraulic pressure cavity with the rear portion cylinder by anterior cylinder and constitutes;
In the anterior cylinder working piston is arranged, this working piston is drawn a push rod that stretches out cylinder body forward, draws a hydraulic pressure plug backward to the middle part hydraulic pressure cavity, and working piston and cylinder body form former and later two air chambers, and two air chambers are respectively equipped with a pressurized air interface;
One pneumatic piston is arranged in the cylinder of rear portion, pneumatic piston is drawn a booster rod forward to the middle part hydraulic pressure cavity, be with a separator piston on this booster rod, between separator piston and the above-mentioned hydraulic pressure plug is the middle part hydraulic pressure cavity, this hydraulic pressure cavity is divided into the anterior high-voltage oil cavity and the low pressure oil pocket two-part at rear portion, two-part are communicated with by middle boost port, and boost port is located at booster rod the place ahead, and are sealed and matched when advancing with booster rod; Pneumatic piston rear end and cylinder body form a supercharging air chamber, and the supercharging air chamber is provided with the pressurized air interface, and this pressurized air interface is connected with rear gas chamber's pressurized air interface of above-mentioned anterior cylinder through pressure controlled valve; Its innovative point is: be an air spring structure between pneumatic piston and the separator piston, this air spring structure is made of the air chamber that pneumatic piston, separator piston and cylinder body form, this air chamber is provided with a suction port and an air outlet, suction port is connected with source of compressed air through pressure controlled valve, and the air outlet communicates with atmosphere through relief valve.
Related content in the technique scheme is explained as follows:
1, in the such scheme, the optimum structure of described air spring is: be provided with a transverse section in the air chamber of air spring, this transverse section will be divided into spacer and reseting cavity before and after the air chamber, and there is a booster rod through hole at the middle part, transverse section, and booster rod passes from this through hole; Described pressure controlled valve and relief valve are arranged on this transverse section.
2, in the such scheme, the concrete scheme that spacer, reseting cavity are connected with pressure controlled valve and relief valve is: offer gas-entered passageway on the transverse section between spacer and the reseting cavity, pressure controlled valve is connected through gas-entered passageway and spacer, reseting cavity; The import of described relief valve communicates with booster rod through hole on the transverse section, and spacer and reseting cavity are connected through this through hole and relief valve.
Certainly, other Placement is also contained in this case.
4, in the such scheme, baffler can be set in the outlet of relief valve, to reduce the generation of noise.
5, in the such scheme, described orientation such as forward and backward is pressed accompanying drawing 2 and is determined that for example the left side of Fig. 2 is the rear, and the right side is the place ahead.
The utility model working principle is: cooperate with air chamber, pressure controlled valve and relief valve to constitute an air spring, replace mechanical spring of the prior art with this air spring; The working principle of air spring is: feed pressurized air through pressure controlled valve in air chamber, and control air pressure in the air chamber together with pressure controlled valve and relief valve; When the air pressure in the air chamber is crossed when low, pressure controlled valve is opened and is charged into pressurized air, when the air chamber internal air pressure is too high, and relief valve meeting automatic pressure-relieving, make the air chamber internal air pressure remain certain value (being preferably 0.8bar), the effect that makes this air spring realize precompressed and help to reset.
The working procedure of whole model utility is: shown in accompanying drawing 2, when the diagram state of rest, pressurized gas interface B22 feeds extraneous pressurized air, and working piston 4 is at rear end of the cylinder block, and same separator piston 3 remains on the rear positions under air spring 29 effects.During work, the pressurized air interface A23 of anterior cylinder 6 goes up and feeds pressurized gas earlier, and pressurized air interface B22 goes up pass-out pressurized air, and working piston 4 moves forward under gas pressure, and push rod 5 is fast moving forward, enters the F.F. stroke; At this moment, separator piston 3 also moves forward with working piston 4 under air spring 29 effects, and the hydraulic oil in the low pressure oil pocket 18 is pressed in the high-voltage oil cavity 17.When push rod 5 is run into machining object, rear gas chamber's 28 internal air pressures of anterior cylinder 6 rise, pressure controlled valve 30 is backed down automatically, pressurized air is in this control valve 30 enters the pressurized air interface 15 of rear portion cylinder 7 rear gas chamber 28, pneumatic piston 1 is travelled forward together with booster rod 2, in the time of in booster rod 2 stretches into boost port 19, booster rod 2 is sealed and matched with boost port 19, and low pressure oil pocket 18 and high-voltage oil cavity 17 are cut off; Booster rod 2 continues to move forward and stretches in the high-voltage oil cavity 17, and the oil in the high-voltage oil cavity 17 are extruded by push rod, produces high pressure, and this high pressure acts on the section of working piston 4, and working piston 4 is moved forward continuing energetically, enters the worker and carries out journey.After machining, pressurized air interface A, the B22,23 of anterior cylinder 6 oppositely ventilate, and working piston 4 is rewind down under gas pressure, and drive booster rod 2 and pneumatic piston 1 resets; So far, finishing F.F.-worker advances-the whole work cycle of rewind down.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, because the utility model design is ingenious, adopts unique air spring structure, made precompressed and reseat pressure can steplessly adjust (0-8bar), and relied on the relief valve of air spring inside, can guarantee work medi-spring inner pressure constant.
2, same because the utility model has adopted unique air spring structure, the spring inner pressure loss reduces, and makes whole pneumohydraulic pressure-cylinder more economize gas, energy-conservation.
3, same because the utility model has adopted unique air spring structure, and on relief valve, added baffler, realized noise free work.
Description of drawings
Accompanying drawing 1 is prior art constructions figure;
Accompanying drawing 2 is a structural representation of the present utility model;
Accompanying drawing 3 is embodiment's a structural drawing;
Accompanying drawing 4 is the part figure of embodiment's air spring part.
In the above accompanying drawing: 1, pneumatic piston; 2, booster rod; 3, separator piston; 4, working piston; 5, push rod; 6, anterior cylinder; 7, rear portion cylinder; 8, hydraulic pressure plug; 9, spacer; 10, reseting cavity; 11, booster rod through hole; 12, pressure controlled valve; 13, relief valve; 14, supercharging air chamber; 15, pressurized air interface; 16, transverse section; 17, high-voltage oil cavity; 18, low pressure oil pocket; 19, boost port; 20, gas-entered passageway; 21, baffler; 22, pressurized air interface B; 23, pressurized air interface A; 24, mechanical spring; 25, vent; 26, middle part hydraulic pressure cavity; 27, preceding air chamber; 28, rear gas chamber; 29, air spring; 30, pressure controlled valve.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: shown in accompanying drawing 2～accompanying drawing 4, a kind of pneumohydraulic pressure-cylinder is made of by middle part hydraulic pressure cavity 26 axial serial connections with rear portion cylinder 7 anterior cylinder 6; In the anterior cylinder 6 working piston 4 is arranged, this working piston 4 is drawn a push rod 5 that stretches out cylinder body forward, draw a hydraulic pressure plug 8 backward to middle part hydraulic pressure cavity 26, working piston 4 forms former and later two air chambers with cylinder body: preceding air chamber 27,28, two air chambers of rear gas chamber are provided with pressurized air interface A23, pressurized air interface B22; One pneumatic piston 1 is arranged in the rear portion cylinder 7, pneumatic piston 1 is drawn a booster rod 2 forward to middle part hydraulic pressure cavity 26, be with a separator piston 3 on this booster rod 2, between separator piston 3 and the above-mentioned hydraulic pressure plug 8 is middle part hydraulic pressure cavity 26, this hydraulic pressure cavity is divided into the anterior high-voltage oil cavity 17 and low pressure oil pocket 18 two-part at rear portion, two-part are communicated with by middle boost port 19, and boost port 19 is located at booster rod 2 the place aheads, and are sealed and matched when advancing with booster rod 2; Pneumatic piston 1 rear end and cylinder body form a supercharging air chamber 14, and supercharging air chamber 14 is provided with pressurized air interface 15, and this pressurized air interface 15 is connected with rear gas chamber's 28 pressurized air interfaces of above-mentioned anterior cylinder 6 through pressure controlled valve 30;
Between pneumatic piston 1 and the separator piston 3 air spring 29 structures, these air spring 29 structures are made of with the air chamber that cylinder body forms pneumatic piston 1, separator piston 3, this air chamber is provided with a suction port and an air outlet, suction port is connected with source of compressed air through pressure controlled valve 12, and the air outlet communicates with atmosphere through relief valve 13.Be provided with a transverse section 16 in the air chamber of described air spring 29, this transverse section 16 is divided into spacer 9 and reseting cavity 10 with before and after the air chamber, and there is a booster rod through hole 11 at 16 middle parts, transverse section, and booster rod 2 passes from this through hole 11; Pressure controlled valve 12 and relief valve 13 are arranged on this transverse section 16.Offer gas-entered passageway 20 on the transverse section 16, pressure controlled valve 12 is connected through gas-entered passageway 20 and spacer 9, reseting cavity 10.The import of relief valve 13 communicates with booster rod through hole 11 on the transverse section 8, and spacer 9 and reseting cavity 10 are connected through this through hole 11 and relief valve 13.The outlet of relief valve 13 is provided with baffler 21.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (5)
1, a kind of pneumohydraulic pressure-cylinder axially is connected in series formation with rear portion cylinder [7] by middle part hydraulic pressure cavity [26] by anterior cylinder [6];
In the anterior cylinder [6] working piston [4] is arranged, this working piston [4] is drawn a push rod [5] that stretches out cylinder body forward, draw a hydraulic pressure plug [8] backward to middle part hydraulic pressure cavity [26], working piston [4] forms former and later two air chambers with cylinder body, and two air chambers are respectively equipped with a pressurized air interface;
One pneumatic piston [1] is arranged in the rear portion cylinder [7], pneumatic piston [1] is drawn a booster rod [2] forward to middle part hydraulic pressure cavity [26], be with a separator piston [3] on this booster rod [2], be middle part hydraulic pressure cavity [26] between separator piston [3] and the above-mentioned hydraulic pressure plug [8], this hydraulic pressure cavity is divided into the anterior high-voltage oil cavity [17] and low pressure oil pocket [18] two-part at rear portion, two-part are communicated with by middle boost port [19], and boost port [19] is located at booster rod [2] the place ahead, and is sealed and matched when advancing with booster rod [2]; Pneumatic piston [1] rear end and cylinder body form a supercharging air chamber [14], and supercharging air chamber [14] is provided with pressurized air interface [15], and this pressurized air interface [15] is connected through the pressurized air interface of pressure controlled valve [30] with the rear gas chamber [28] of above-mentioned anterior cylinder [6]; It is characterized in that: be an air spring [29] structure between pneumatic piston [1] and the separator piston [3], this air spring [29] structure is made of with the air chamber that cylinder body forms pneumatic piston [1], separator piston [3], this air chamber is provided with a suction port and an air outlet, suction port is connected with source of compressed air through pressure controlled valve [12], and the air outlet communicates with atmosphere through relief valve [13].
2, pneumohydraulic pressure-cylinder according to claim 1, it is characterized in that: be provided with a transverse section [16] in the air chamber of described air spring [29], this transverse section [16] will be divided into spacer [9] and reseting cavity [10] before and after the air chamber, there is a booster rod through hole [11] at middle part, transverse section [16], and booster rod [2] passes from this through hole [11]; Described pressure controlled valve [12] and relief valve [13] are arranged on this transverse section [16].
3, pneumohydraulic pressure-cylinder according to claim 2 is characterized in that: offer gas-entered passageway [20] on described transverse section [16], pressure controlled valve [12] is connected through gas-entered passageway [20] and spacer [9], reseting cavity [10].
4, pneumohydraulic pressure-cylinder according to claim 2 is characterized in that: the import of described relief valve [13] communicates with booster rod through hole [11] on transverse section [8], and spacer [9] and reseting cavity [10] are connected through this through hole [11] and relief valve [13].
5, pneumohydraulic pressure-cylinder according to claim 1 is characterized in that: the outlet of described relief valve [13] is provided with baffler [21].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069735 CN2769581Y (en) | 2005-03-08 | 2005-03-08 | Gas-liquid booster cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069735 CN2769581Y (en) | 2005-03-08 | 2005-03-08 | Gas-liquid booster cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN2769581Y true CN2769581Y (en) | 2006-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520069735 Expired - Fee Related CN2769581Y (en) | 2005-03-08 | 2005-03-08 | Gas-liquid booster cylinder |
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| CN (1) | CN2769581Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852227A (en) * | 2010-06-22 | 2010-10-06 | 肖高富 | Powerful cylinder |
| CN101886645A (en) * | 2009-05-13 | 2010-11-17 | 单才华 | Pneumatic and hydraulic linked cylinder |
| CN101956737A (en) * | 2010-10-25 | 2011-01-26 | 苏州高新区禾云设备设计事务所 | Pneumatic-boosting hydraulic cylinder |
| CN102252001A (en) * | 2011-08-22 | 2011-11-23 | 康向一 | Air cylinder using hydraulic drive |
| CN102410266A (en) * | 2011-09-27 | 2012-04-11 | 浙江师范大学 | Method for realizing micro-displacement |
| CN103410798A (en) * | 2013-08-06 | 2013-11-27 | 彭智勇 | Gas-liquid damping cylinder for vertical jacking |
| CN105570207A (en) * | 2016-03-14 | 2016-05-11 | 匡信机械(昆山)有限公司 | Continuous multi-stage pressurizing method and continuous multi-stage pressurizing cylinder structure |
| CN105952698A (en) * | 2016-06-17 | 2016-09-21 | 武汉软件工程职业学院 | Gas-liquid pressurized cylinder |
| CN106015130A (en) * | 2016-07-06 | 2016-10-12 | 天津优瑞纳斯液压机械有限公司 | Large-thrust high-speed hydraulic cylinder and work method thereof |
| CN110125310A (en) * | 2019-06-14 | 2019-08-16 | 眉山中车紧固件科技有限公司 | It is a kind of for riveting the prestressing force driving device of robot |
-
2005
- 2005-03-08 CN CN 200520069735 patent/CN2769581Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886645A (en) * | 2009-05-13 | 2010-11-17 | 单才华 | Pneumatic and hydraulic linked cylinder |
| CN101852227A (en) * | 2010-06-22 | 2010-10-06 | 肖高富 | Powerful cylinder |
| CN101956737A (en) * | 2010-10-25 | 2011-01-26 | 苏州高新区禾云设备设计事务所 | Pneumatic-boosting hydraulic cylinder |
| CN102252001A (en) * | 2011-08-22 | 2011-11-23 | 康向一 | Air cylinder using hydraulic drive |
| CN102410266A (en) * | 2011-09-27 | 2012-04-11 | 浙江师范大学 | Method for realizing micro-displacement |
| CN103410798B (en) * | 2013-08-06 | 2016-12-28 | 彭智勇 | A kind of gas-liquid damping cylinder for vertical jacking |
| CN103410798A (en) * | 2013-08-06 | 2013-11-27 | 彭智勇 | Gas-liquid damping cylinder for vertical jacking |
| CN105570207A (en) * | 2016-03-14 | 2016-05-11 | 匡信机械(昆山)有限公司 | Continuous multi-stage pressurizing method and continuous multi-stage pressurizing cylinder structure |
| CN105570207B (en) * | 2016-03-14 | 2017-06-06 | 匡信机械(昆山)有限公司 | A kind of continous way multi-stage booster method and its supercharging cylinder structure |
| CN105952698A (en) * | 2016-06-17 | 2016-09-21 | 武汉软件工程职业学院 | Gas-liquid pressurized cylinder |
| CN105952698B (en) * | 2016-06-17 | 2019-07-30 | 武汉软件工程职业学院 | A kind of solution-air pressurized cylinder |
| CN106015130A (en) * | 2016-07-06 | 2016-10-12 | 天津优瑞纳斯液压机械有限公司 | Large-thrust high-speed hydraulic cylinder and work method thereof |
| CN110125310A (en) * | 2019-06-14 | 2019-08-16 | 眉山中车紧固件科技有限公司 | It is a kind of for riveting the prestressing force driving device of robot |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |