CN202251164U - Rapid hydraulic booster cylinder - Google Patents
Rapid hydraulic booster cylinder Download PDFInfo
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- CN202251164U CN202251164U CN2011203566056U CN201120356605U CN202251164U CN 202251164 U CN202251164 U CN 202251164U CN 2011203566056 U CN2011203566056 U CN 2011203566056U CN 201120356605 U CN201120356605 U CN 201120356605U CN 202251164 U CN202251164 U CN 202251164U
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Abstract
The utility model discloses a rapid hydraulic booster cylinder. A small piston is separated from a big piston by a connecting plate between the small piston and the big piston, and formed to be two individual hydraulic cylinder chambers including a small piston cylinder chamber and a big piston cylinder chamber; the small piston is connected with the big piston through a connecting plate and a piston rod at the front end; a lower-stroke oil inlet and an upper-stroke oil inlet for downwards and upwards moving the big piston under the driving of the small piston are formed on the small piston cylinder and communicated into the small piston hydraulic cylinder chambers on the upper and lower end faces of the small piston without interfering with each other; and an oil feeding hole connected with an oil tank and a big piston cylinder chamber is formed on the connecting plate and a one-way oil feeding valve is placed inside the oil feeding hole. The rapid hydraulic booster cylinder is featured by small overall cylinder volume, high boosting degree, capability of quickly and stably switching idle speed and load speed, and the like, and the downward movement speed of the big piston is accelerated with a spring added and the oil automatically flowing into the big piston chamber at the oil feeding hole under the negative downward movement pressure.
Description
Technical field
The utility model relates to step-up system, specifically the fast hydraulic pressure power cylinder.
Background technique
Adopting hydraulic jack to come stamped workpieces in the prior art is more common technological means; Its application is very extensive; Such as being applied to be used in the molding machine of angle the occasion of stamped workpieces, but because its stamping press of hydraulic jack commonly used depends on the size of piston effective area.For the less oil cylinder of volume, stamping press is also less, often can not satisfy the needs of big stamping press, if strengthen the oil cylinder volume, not only increases cost, the difficulty that has also increased power consumption and installed and used.So the reinforcement hydraulic jack that stamping press increases greatly through the improved small volume oil cylinder of structure arises at the historic moment.
Such as a kind of disclosed boosting oil cylinder is arranged, be on the piston rod in same cylinder body two pistons to be housed, wherein be provided with spacer between small piston and the cylinder body, in fact form two oil cylinders.When back oilhole oil-feed, when preceding oilhole is fuel-displaced, act on two thrust additions on the piston, the oil cylinder stamping press is increased.Like this under the situation that does not strengthen the oil cylinder volume and play the effect of reinforcement.Though this boosting oil cylinder has reached the purpose of reinforcement and since the front and back oilhole be separately positioned on big small piston and and its inner chamber UNICOM, its reinforcement is limited; And this structure operation is not steady; Big piston only leans on the drive of small piston, does not have extra reinforcement source, and whole process is too slow; The function that does not have automatic oil-feed and automatic fuel-displaced and self-return; Use inconveniently, the fluency of the cyclic process of backhaul and punching press does not solve, and a kind of reinforcement is bigger so we need develop, big piston downstream rate, null speed and loading speed are switched rapid and steady, self-return and used more smoothness fast hydraulic pressure power cylinder quickly and easily.
Summary of the invention
The purpose of the utility model is the defective that exists to existing technology, and the fast hydraulic pressure power cylinder is provided.Have one-piece cylinder long-pending little, reinforcement big, null speed is switched characteristics such as rapid and steady with loading speed, and since added spring simultaneously through descending negative pressure oil-filled mouthful automatically the oil in the inflow big piston chamber accelerated the big piston downstream rate.
The utility model solves the technological scheme that its technical problem adopted: fast hydraulic pressure power cylinder, its structure mainly comprise small piston that places the small piston cylinder body and the big piston that places the big piston cylinder body; The connecting plate between the two is separated by through it that to form two independent hydraulic cylinder cavities be small piston cylinder chamber and big piston cylinder chamber in the back for described small piston and big piston; Said small piston cylinder chamber forms the small piston epicoele in the upper-end surface of small piston, forms the small piston cavity of resorption in the small piston lower end surface; After passing connecting plate, the piston rod of said small piston through front end link together with big piston; Being used for making small piston to drive down stroke filler opening that big piston realizes descending and up action and up stroke filler opening all is opened in and also is communicated to respectively not on the small piston cylinder body each other in the small piston hydraulic cylinder cavity of the small piston upper-end surface of interference and lower end surface; Offer oil-filled mouthful that connects fuel tank and big piston cylinder chamber on the said connecting plate, this oil-filled mouthful of set inside has oil-filled one-way valve.
Said big piston cylinder is provided with spring in the chamber, and this spring one end connects connecting plate, and the other end connects big piston.
The fuel-displaced duct, centre of up/down perforation is offered at said small piston and piston rod center; The lower end in this fuel-displaced duct and joint, big piston cylinder chamber are provided with the piston rod one-way valve, and the joint, small piston cylinder chamber of the upper end in this fuel-displaced duct and small piston upper-end surface is provided with piston oil extraction one-way valve.
Also be provided with in the said connecting plate and be used for the reverse hydraulic control cylinder of opening oil-filled one-way valve, this hydraulic control cylinder and small piston cavity of resorption are communicated with.
Said down stroke filler opening and up stroke filler opening are connected to fuel tank through oil pipe, solenoid valve, oil pump.
Be provided with seal ring between said small piston and the small piston cylinder body; Be provided with seal ring between said big piston and the big piston cylinder body; Be provided with seal ring when the piston rod of said small piston front end passes connecting plate and between the connecting plate.
The fast hydraulic pressure power cylinder of the utility model is compared with existing technology, has following beneficial effect:
The utility model is when solenoid valve B gets when electric: the oil-feed of down stroke filler opening, and small piston is descending, and big piston follows closely descending under spring action and produces negative pressure simultaneously; Oil-filled one-way valve opens, fuel tank oil is sucked fast, when big piston walks to workpiece and produces operating load; Small piston continues descending; Oil-filled closed check valve, big piston oil pocket oil pressure transfers malleation to, because mechanism characteristics; Small piston upper end area is that M multiple, big piston work area are the N multiple with the ratio of small piston rod area with the ratio of small piston rod area, and the technology power that this moment, big piston produced is the M * N=W multiple of small piston active force.Reinforcement effect is very obvious.When solenoid valve A gets up stroke filler opening when electric; Make small piston up; Small piston is through moving big piston of two shoulder belts of piston rod one-way valve and pressure spring backhaul, and big piston epicoele oil converges to fuel tank with small piston epicoele oil through opened piston rod one-way valve and piston oil extraction one-way valve in the lump simultaneously.Up just wherein a kind of mode of above-mentioned small piston and big piston; Can certainly utilize another kind of mode up; Such as getting as solenoid valve A when electric: the oil-feed of up stroke filler opening; Make small piston up,, make the pressure in small piston cylinder chamber reach the hydraulic control cylinder and promote oil-filled mouth one-way valve is reverse and open because small piston chamber and hydraulic control cylinder communicate; Small piston drives big piston and pressure spring backhaul through piston rod front end boss rigidity, and big piston epicoele oil is back to fuel tank through the reverse oil-filled mouthful of one-way valve of opening simultaneously.Have one-piece cylinder long-pending little, reinforcement big, null speed is switched characteristics such as rapid and steady with loading speed, and since added spring simultaneously through descending negative pressure oil-filled mouthful automatically the oil in the inflow big piston chamber accelerated the big piston downstream rate.
Description of drawings
Fig. 1 is the structural representation of the fast hydraulic pressure power cylinder of the utility model;
Fig. 2 is the another kind of example structure schematic representation of the fast hydraulic pressure power cylinder of the utility model;
Fig. 3 is the partial enlarged drawing of Fig. 2.
Among the figure: 1, fuel tank; 2, connecting plate; 3, big piston cylinder body; 4, small piston cylinder body; 5, big piston; 6, small piston; 7, down stroke filler opening; 8, up stroke filler opening; 9, oil-filled mouthful; 10, oil-filled one-way valve; 11, spring; 12, piston rod one-way valve; 13, piston oil extraction one-way valve; 14, workpiece; 15, hydraulic control cylinder.
Embodiment
Next explanation at length below with reference to Figure of description the fast hydraulic pressure power cylinder of the utility model being done.
Embodiment 1:
According to shown in Figure 1, the fast hydraulic pressure power cylinder, its structure mainly comprises small piston 6 that places small piston cylinder body 4 and the big piston 5 that places big piston cylinder body 3; The connecting plate between the two 2 is separated by through it that to form two independent hydraulic cylinder cavities be small piston cylinder chamber and big piston cylinder chamber in the back for described small piston and big piston; Said small piston cylinder chamber forms the small piston epicoele in the upper-end surface of small piston, forms the small piston cavity of resorption in the small piston lower end surface; After passing connecting plate, the piston rod of said small piston through front end link together with big piston; Be used for making small piston to drive big piston and realize that descending down stroke filler opening 7 with up action all is opened on the small piston cylinder body with up stroke filler opening 8 and is communicated to respectively not each other in the small piston hydraulic cylinder cavity of the small piston upper-end surface of interference and lower end surface; Offer oil-filled mouthful 9 that connects fuel tank 1 and big piston cylinder chamber on the said connecting plate, this oil-filled mouthful of set inside has oil-filled one-way valve 10.The big piston cylinder is provided with spring 11 in the chamber, and this spring one end connects connecting plate 2, and the other end connects big piston.The fuel-displaced duct, centre of up/down perforation is offered at said small piston and piston rod center; The lower end in this fuel-displaced duct and joint, big piston cylinder chamber are provided with piston rod one-way valve 12, and the joint, small piston cylinder chamber of the upper end in this fuel-displaced duct and small piston upper-end surface is provided with piston oil extraction one-way valve 13.Said down stroke filler opening and up stroke filler opening are connected to fuel tank through oil pipe, solenoid valve, oil pump.Be provided with seal ring between said small piston and the small piston cylinder body; Be provided with seal ring between said big piston and the big piston cylinder body; Be provided with seal ring when the piston rod of said small piston front end passes connecting plate and between the connecting plate.
When initial state, the piston rod one-way valve of small piston piston rod front end two shoulders are being carried on a shoulder pole big piston and spring are being had the decrement of a big stroke, are still in initial position.
When solenoid valve B gets when electric: the oil-feed of down stroke filler opening, small piston is descending, and big piston follows closely descending under spring action and produces negative pressure simultaneously; Oil-filled one-way valve opens, fuel tank oil is sucked fast, when big piston walks to workpiece and produces operating load; Small piston continues descending; Oil-filled closed check valve, big piston oil pocket oil pressure transfers malleation to, because mechanism characteristics; Small piston upper end area is that M multiple, big piston work area are the N multiple with the ratio of small piston rod area with the ratio of small piston rod area, and the technology power that this moment, big piston produced is the M * N=W multiple of small piston active force.
When solenoid valve A gets when electric: the oil-feed of up stroke filler opening; Make small piston up; Small piston is through moving big piston of two shoulder belts of piston rod one-way valve and pressure spring backhaul, and big piston epicoele oil converges to fuel tank with small piston epicoele oil through opened piston rod one-way valve and piston oil extraction one-way valve in the lump simultaneously.
Embodiment 2:
According to Fig. 2 and shown in Figure 3, the fast hydraulic pressure power cylinder, its structure mainly comprises small piston 6 that places small piston cylinder 4 bodies and the big piston 5 that places big piston cylinder body 3; The connecting plate between the two 2 is separated by through it that to form two independent hydraulic cylinder cavities be small piston cylinder chamber and big piston cylinder chamber in the back for described small piston and big piston; Said small piston cylinder chamber forms the small piston epicoele in the upper-end surface of small piston, forms the small piston cavity of resorption in the small piston lower end surface; After passing connecting plate, the piston rod of said small piston through front end link together with big piston; Be used for making small piston to drive big piston and realize that descending down stroke filler opening 7 with up action all is opened on the small piston cylinder body with up stroke filler opening 8 and is communicated to respectively not each other in the small piston hydraulic pressure cavity of resorption of the small piston upper-end surface of interference and lower end surface; Offer oil-filled mouthful 9 that connects fuel tank and big piston cylinder chamber on the said connecting plate, this oil-filled mouthful of set inside has oil-filled one-way valve 10.Said big piston cylinder is provided with spring 11 in the chamber, and this spring one end connects connecting plate, and the other end connects big piston.Also be provided with in the said connecting plate and be used for the reverse hydraulic control cylinder 15 of opening oil-filled one-way valve, this hydraulic control cylinder and small piston cylinder chamber are communicated with.Said down stroke filler opening and up stroke filler opening are connected to fuel tank through oil pipe, solenoid valve, oil pump.Be provided with seal ring between said small piston and the small piston cylinder body; Be provided with seal ring between said big piston and the big piston cylinder body; Be provided with seal ring when the piston rod of said small piston front end passes connecting plate and between the connecting plate.
When initial state, the boss of small piston piston rod front end two shoulders are being carried on a shoulder pole big piston and spring are being had the decrement of a big stroke, are still in initial position.
When solenoid valve B gets when electric: the oil-feed of down stroke filler opening, small piston is descending, and big piston follows closely descending under spring action and produces negative pressure simultaneously; Oil-filled one-way valve opens, fuel tank oil is sucked fast, when big piston walks to workpiece and produces operating load; Small piston continues descending; Oil-filled closed check valve, big piston oil pocket oil pressure transfers malleation to, because mechanism characteristics; Small piston upper end area is that M multiple, big piston work area are the N multiple with the ratio of small piston rod area with the ratio of small piston rod area, and the technology power that this moment, big piston produced is the M * N=W multiple of small piston active force.
When solenoid valve A gets when electric: the oil-feed of up stroke filler opening; Make small piston up; Because small piston chamber and hydraulic control cylinder communicate; Make the pressure in small piston cylinder chamber reach the hydraulic control cylinder and promote oil-filled mouthful one-way valve is reverse and open that small piston drives big piston and pressure spring backhaul through piston rod front end boss rigidity, big piston epicoele oil is back to fuel tank through the reverse oil-filled mouthful of one-way valve of opening simultaneously.
The above embodiment is a kind of of the more preferably concrete mode of execution of the utility model, and common variation that those skilled in the art carries out in the utility model technological scheme scope and replacement all should be included in the protection domain of the utility model.
Claims (6)
1. fast hydraulic pressure power cylinder, its structure mainly comprise small piston that places the small piston cylinder body and the big piston that places the big piston cylinder body; The connecting plate between the two is separated by through it that to form two independent hydraulic cylinder cavities be small piston cylinder chamber and big piston cylinder chamber in the back for described small piston and big piston; Said small piston cylinder chamber forms the small piston epicoele in the upper-end surface of small piston, forms the small piston cavity of resorption in the small piston lower end surface; It is characterized in that: link together with big piston after the piston rod of said small piston through front end passes connecting plate; Being used for making small piston to drive big piston realizes that descending down stroke filler opening with up action all is opened in the up stroke filler opening and also is communicated to not the small piston epicoele of the small piston upper-end surface of interference and the small piston cavity of resorption of lower end surface each other on the small piston cylinder body respectively; Offer oil-filled mouthful that connects fuel tank and big piston cylinder chamber on the said connecting plate, this oil-filled mouthful of set inside has oil-filled one-way valve.
2. fast hydraulic pressure power cylinder according to claim 1 is characterized in that: said big piston cylinder is provided with spring in the chamber, and this spring one end connects connecting plate, and the other end connects big piston.
3. fast hydraulic pressure power cylinder according to claim 1; It is characterized in that: the fuel-displaced duct, centre of up/down perforation is offered at said small piston and piston rod center; The lower end in this fuel-displaced duct and joint, big piston cylinder chamber are provided with the piston rod one-way valve, and the joint, small piston cylinder chamber of the upper end in this fuel-displaced duct and small piston upper-end surface is provided with piston oil extraction one-way valve.
4. fast hydraulic pressure power cylinder according to claim 1 is characterized in that: also be provided with in the said connecting plate and be used for the reverse hydraulic control cylinder of opening oil-filled one-way valve, this hydraulic control cylinder and small piston cavity of resorption are communicated with.
5. fast hydraulic pressure power cylinder according to claim 1 is characterized in that: said down stroke filler opening and up stroke filler opening are connected to fuel tank through oil pipe, solenoid valve, oil pump.
6. fast hydraulic pressure power cylinder according to claim 1 is characterized in that: be provided with seal ring between said small piston and the small piston cylinder body; Be provided with seal ring between said big piston and the big piston cylinder body; Be provided with seal ring when the piston rod of said small piston front end passes connecting plate and between the connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203566056U CN202251164U (en) | 2011-09-22 | 2011-09-22 | Rapid hydraulic booster cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203566056U CN202251164U (en) | 2011-09-22 | 2011-09-22 | Rapid hydraulic booster cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251164U true CN202251164U (en) | 2012-05-30 |
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ID=46112414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203566056U Expired - Fee Related CN202251164U (en) | 2011-09-22 | 2011-09-22 | Rapid hydraulic booster cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297169A (en) * | 2011-09-22 | 2011-12-28 | 田书印 | Quick hydraulic booster cylinder |
| CN103883585A (en) * | 2014-04-08 | 2014-06-25 | 武汉科技大学 | Self-adapting load conversion hydraulic cylinder |
-
2011
- 2011-09-22 CN CN2011203566056U patent/CN202251164U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297169A (en) * | 2011-09-22 | 2011-12-28 | 田书印 | Quick hydraulic booster cylinder |
| CN103883585A (en) * | 2014-04-08 | 2014-06-25 | 武汉科技大学 | Self-adapting load conversion hydraulic cylinder |
| CN103883585B (en) * | 2014-04-08 | 2015-12-16 | 武汉科技大学 | A kind of self-adapting load conversion oil hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140922 |
|
| EXPY | Termination of patent right or utility model |