CN107588056A - Composite oil cylinder - Google Patents
Composite oil cylinder Download PDFInfo
- Publication number
- CN107588056A CN107588056A CN201710939850.1A CN201710939850A CN107588056A CN 107588056 A CN107588056 A CN 107588056A CN 201710939850 A CN201710939850 A CN 201710939850A CN 107588056 A CN107588056 A CN 107588056A
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- piston rod
- screw mandrel
- cylinder body
- oil
- oil cylinder
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Abstract
The present invention is applied to oil cylinder technical field, provide a kind of composite oil cylinder, including hollow cylinder body, the both ends of cylinder body are connected to protecgulum and bonnet, one end is provided with cylinder body to insert through protecgulum, and the piston rod that can be moved back and forth in cylinder body, it is respectively formed between piston rod and cylinder body and between bonnet for accommodating hydraulic oil, with the first cavity and the second cavity that piston rod can be promoted to move back and forth, receiving hole is offered on piston rod, after cover and be connected with and can rotate, with the screw mandrel for driving piston rod to move back and forth, one end of screw mandrel is located in receiving hole, and drive mechanism is provided between piston rod, the other end of screw mandrel is connected with actuator.A kind of composite oil cylinder provided by the present invention, its is rational in infrastructure, spaces compact, control is simple, and is swift in response, and can quickly stretch out, retract, and high-pressure work at a slow speed can be switched to when reaching operating position at a slow speed, use demand is reliably met, and manufacturing cost is low.
Description
Technical field
The invention belongs to oil cylinder technical field, more particularly to a kind of composite oil cylinder.
Background technology
At present, oil cylinder largely is used as execution unit in the equipment such as die casting, injection machine, hydraulic press, using motor
Oil pump as power source, in the course of the work according to operating mode needs and action that control cylinder is made quick stretching, retracted, until
Switch to high-pressure work at a slow speed after up to operating position.To meet the needs of above operating mode, currently conventional way is to use big flow
Hydraulic system, or use composite oil cylinder structure.
But some following deficiency is primarily present in current use：Large-flow hydraulic system is complicated, space-consuming
Greatly, installation is inconvenient；And oil cylinder works under high-volume hydraulic oil driving, and position control accuracy is low；And use composite oil cylinder
Structure when control system complex, processing difficulties cost is high.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided and a kind of composite oil cylinder, its is rational in infrastructure,
Spaces compact, control is simple, and is swift in response, and can quickly stretch out, retract, and can turn when reaching operating position at a slow speed
For high-pressure work at a slow speed, use demand is reliably met, and manufacturing cost is low.
What the present invention was realized in：A kind of composite oil cylinder, including hollow cylinder body, the both ends of the cylinder body connect respectively
There are protecgulum and bonnet, one end is provided with the cylinder body and inserts and can be moved back and forth in the cylinder body through the protecgulum
Piston rod, be respectively formed between the piston rod and the cylinder body and between the bonnet for accommodate hydraulic oil,
With the first cavity and the second cavity that the piston rod can be promoted to move back and forth, receiving hole is offered on the piston rod, institute
Covering to be connected with after stating can rotate, to drive the screw mandrel that the piston rod moves back and forth, and one end of the screw mandrel is located in institute
State in receiving hole and drive mechanism is provided between the piston rod, the other end of the screw mandrel is connected with actuator.
Alternatively, the drive mechanism includes feed screw nut and for the feed screw nut to be fixedly connected on into the piston
Fastener on bar, the screw mandrel are located in the feed screw nut and are threadedly coupled between the two.
Alternatively, fluted, feed screw nut's fixation company is opened up in the piston rod one side relative with the bonnet
It is connected in the groove.
Alternatively, the drive mechanism includes being opened in internal thread on the receiving hole madial wall, the internal thread with
Screw thread on the screw mandrel is meshed.
Alternatively, the support component being provided with for supporting the screw mandrel is covered after described, the support component includes double
Axial thrust bearing and the bearing plate for fixing the branch two-direction thrust bearing, one end of the screw mandrel are located in described two-way
In thrust bearing, the bearing plate is resisted against the two-direction thrust bearing.
Alternatively, the screw mandrel, which is stretched out on one end of the bonnet, is provided with screw thread, and is connected with for fixing the silk
The locking nut of bar and the two-direction thrust bearing.
Alternatively, be provided between the bonnet and the screw mandrel for assemble sealing the first support ring, buffering ring and
Rotating seal ring, first support ring, the buffering ring and the rotating seal ring are spaced setting.
Alternatively, at least one second support ring is provided between the inwall of the piston rod and the cylinder body and one double
To oil sealing or at least one second support ring and two unidirectional oil sealings.
Alternatively, three-support ring, hermetic oil seal are disposed with from inside to outside between the protecgulum and the piston rod
It is covered with dust with sealing.
Alternatively, offer for the first oil transportation hole of delivery hydraulic pressure oil into first cavity and open on the cylinder body
Provided with the second oil transportation hole for the delivery hydraulic pressure oil into second cavity, the piston rod end face relative with the bonnet
On offer oil-through-hole for connecting the second oil transportation hole and the second cavity.
A kind of composite oil cylinder provided by the present invention, by being provided with receiving hole on the piston rod, cover and be connected with after
Can rotate, the screw mandrel to drive piston rod to move back and forth, and one end of screw mandrel be located in receiving hole and with piston rod it
Between be provided with drive mechanism, and the other end of screw mandrel is connected with actuator.So as to which in the course of work, actuator drives screw mandrel
Rotate, and piston rod is moved under the transmission of drive mechanism, and then can realize that oil cylinder is not needing the situation of hydraulic power
Under can fast reaction, drive piston rod quickly to extend and retract, and can also soon reach operating position when be reconverted into
High drive at a slow speed is realized by hydraulic-driven, reliably met in actual production, it is right when in different working condition
Oil cylinder stretching speed requires different use demands.The composite oil cylinder of such a structure, there is simple and reasonable, compact appearance,
Good airproof performance, the characteristics of quick accurate, reliability is high is acted, meets use demand well.
Brief description of the drawings
Fig. 1 is the front view of composite oil cylinder provided in an embodiment of the present invention；
Fig. 2 is the diagrammatic cross-section at A-A in Fig. 1；
Fig. 3 is the close-up schematic view at C in Fig. 2；
Fig. 4 is the close-up schematic view at D in Fig. 2；
Fig. 5 is the close-up schematic view at E in Fig. 2；
Fig. 6 is the diagrammatic cross-section at B-B in Fig. 2.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It is described in detail below in conjunction with specific implementation of the specific embodiment to the present invention：
As depicted in figs. 1 and 2, the composite oil cylinder provided in the embodiment of the present invention, including hollow cylinder body 11, cylinder body 11
Both ends be connected to protecgulum 12 and bonnet 13, one end is provided with cylinder body 11 and is inserted through protecgulum 12 and can be in cylinder body
The piston rod 14 moved back and forth in 11, it is respectively formed between piston rod 14 and cylinder body 11 and between bonnet 13 for accommodating
Hydraulic oil, the first cavity 15 and the second cavity 16 so that piston rod 14 can be promoted to move back and forth.So, after the completion of assembling and
The structure of an opposing seal can be formed, so that during work, can be according to the work requirements of reality, to the first cavity
15 or into the second cavity 16 conveying high-pressure hydraulic oil and can realize driving piston rod 14 contraction and stretch out motion.
Alternatively, in real work, in order to realize piston rod 14 in the action process for stretching out or retracting, not
It when reaching operating position, can quickly stretch out, to improve operating efficiency, and when will reach operating position shortly, just can turn
It is changed to by hydraulic oil to realize high pressure motive at a slow speed.Therefore, in order to meet such a use demand, solve to be deposited in existing way
Use defect, in embodiments of the present invention, as depicted in figs. 1 and 2, receiving hole 141 is just offered on piston rod 14, after
Be connected with lid 13 can rotate, the screw mandrel 17 to drive piston rod 14 to move back and forth, one end of screw mandrel 17 is located in receiving hole
Drive mechanism 18 is provided with 141 and between piston rod 14, the other end of screw mandrel 17 is connected with actuator and (do not shown in figure
Go out), the actuator can provide driving force and make the forward or reverse of drive screw 17.So, in the course of work of reality, by
It is connected between screw mandrel 17 and piston rod 14 by drive mechanism 18, so that when actuator drives screw mandrel 17 to rotate,
Just piston rod 14 can be driven to be moved in cylinder body 11, and the reciprocal shifting of piston rod 14 is realized by adjusting the direction rotated
It is dynamic.Such a stretching motion when oil cylinder most starts and is not up to operating position is to be driven by the rotation of screw mandrel 17 to realize,
Hydraulic power driving is not needed, rapid reaction, meeting can drive piston rod 14 quickly to extend and retract use demand.And
It is reconverted into and is hydraulically operated to realize high drive at a slow speed when soon reaching operating position.It will finally reach work
During position, into the first cavity 15 or the second cavity 16, conveying high-pressure hydraulic oil drives the piston rod 14 flexible, and silk now
Bar 17 also can be rotated synchronously, to coordinate piston rod 14 to realize movement.The setting of the composite oil cylinder, pass through piston rod 14 and silk
Being used cooperatively between bar 17, the fast reaction of piston rod 14 can be made, realize fast feed.And composite oil cylinder has overall structure simple
The characteristics of list is reasonable, compact appearance, and action control is simple and convenient, meets in actual production to hydraulic oil cylinder driving mode well
Use demand.
Alternatively, as depicted in figs. 1 and 2, in embodiments of the present invention, the drive mechanism 18 includes the He of feed screw nut 181
For the fastener 182 being fixedly connected on feed screw nut 181 on piston rod 14, screw mandrel 17 be located in feed screw nut 181 and
It is threadedly coupled between the two.Due to itself there is screw thread on screw mandrel 17, it will pass through and be provided with feed screw nut 181, and by feed screw nut
181 are fixedly connected on piston rod 14 by bolt class fastener 182, so as to be coordinated by screw thread between the two, in screw mandrel 17
During rotation, active force can be delivered on piston rod 14, and then can realize and drive piston rod 14 in cylinder body 11
Move back and forth.
Alternatively, during actual setting, feed screw nut 181 can be connected directly between on the end face of piston rod 14, or
It can also be to coordinate on bonnet 13 and offer reception hole, so as to which after piston rod 14 shrinks completely, the feed screw nut 181 can
In the reception hole.And in embodiments of the present invention, it is recessed using being offered in the one side relative with bonnet 13 of piston rod 14
Groove (is not indicated) in figure, and feed screw nut 181 is fixedly connected in groove.The depth of the groove is more than or equal to feed screw nut
181 thickness, the feed screw nut 181 is accommodated completely so as to realize.In this way, improve the compactedness of structure.
Alternatively, another implementation as drive mechanism 18, drive mechanism 18 can also be arranged to include out
The internal thread being located on the madial wall of receiving hole 141, internal thread are meshed with the screw thread on screw mandrel 17.That is, directly in piston rod 14
Receiving hole 141 in be provided with internal thread, screw thread on screw mandrel 17 coordinates.So that under the rotation of screw mandrel 17, same energy
Enough realize drives piston rod 14 to be moved in cylinder body 11.Such a set-up mode, it is ingenious in design, it can equally be reliably achieved driving
The use demand that piston rod 14 moves back and forth.
Alternatively, as shown in Figure 2 and Figure 5, in embodiments of the present invention, it is provided with bonnet 13 for support screw 17
Support component 19, support component 19 includes two-direction thrust bearing 191 and the bearing pressure for fixing branch two-direction thrust bearing 191
Plate 192, one end of screw mandrel 17 are located in two-direction thrust bearing 191, and bearing plate 192 is resisted against two-direction thrust bearing 191.Should
Two-direction thrust bearing 191 is used to realize to the axial restraint of screw mandrel 17 and the support of radial direction, it is ensured that can reliably drive piston rod
14 realize stretching or retraction movement.And two-direction thrust bearing 191 is after mounting, its installation is fixed by bearing plate 192
Position, it is ensured that use the reliability of function.
Alternatively, as shown in Figure 2 and Figure 5, stretched out in screw mandrel 17 on one end of bonnet 13 and be provided with screw thread, and be connected with
For fixing the locking nut 193 of screw mandrel 17 and two-direction thrust bearing 191.So as to the locking nut 193 and the spiral shell on screw mandrel 17
Line realizes connection, and one end of locking nut 193 is supported on two-direction thrust bearing 191, can be to the peace of two-direction thrust bearing 191
Holding position is further fixed, and lifts the reliability of the performance of support screw 17.
Alternatively, as shown in Figure 2 and Figure 5, the first support for assembling sealing is provided between bonnet 13 and screw mandrel 17
Ring 20, buffering ring 21 and rotating seal ring 22, and the first support ring 20, buffering ring 21 and rotating seal ring 22 are spaced and set
Put.In this way, it can be used not only for being supported screw mandrel 17, moreover it is possible to realize the sealing to screw mandrel 17 and the fitting surface of bonnet 13.
Alternatively, it is shown such as Fig. 2 and Fig. 4, by the domestic demand of the second cavity 16 formed between bonnet 13 and piston rod 14
High pressure liquid force feed is accommodated, in order that bonnet 13 can be directly tightly connected with cylinder body 11, avoids the second cavity 16 from leaking
The problem of hydraulic oil, bonnet 13 and cylinder body 11 are provided with sealing ring 10, are connected and sealed by the sealing ring 10, meets
Seal the use demand of assembling.Equally, sealing ring 10 is also correspondingly provided between protecgulum 12 and cylinder body 11.
Alternatively, because piston rod 14 needs to reciprocatingly slide in the inside of cylinder body 11, and need the He of the first cavity 15
Second cavity 16, which is realized, to be reliably slidingly sealed, and avoids both from the movement for connecting and influenceing piston rod 14 occur, is just used in work
At least one second support ring 23 and a Bidirectional oil seal 24 or at least one are provided between the inwall of stopper rod 14 and cylinder body 11
Second support ring 23 and two unidirectional oil sealings.And in embodiments of the present invention, as shown in Figure 2 and Figure 4, using in the He of piston rod 14
Two the second support rings 23 and a Bidirectional oil seal 24 are provided between the inwall of cylinder body 11.
Alternatively, as shown in Figures 2 and 3, the 3rd support is disposed between protecgulum 12 and piston rod 14 from inside to outside
Ring 25, hermetic oil seal 26 and sealing are covered with dust 27.By three-support ring 25, hermetic oil seal 26 and sealing be covered with dust 27 common work
With that can realize, assembling seals between piston rod 14 and the fitting surface of protecgulum 12.
Alternatively, as shown in Fig. 2 in embodiments of the present invention, in order to meet the overall assembling demand of composite oil cylinder, preceding
Mounting flange 121 is provided with lid 12, and through hole is offered on flange 121, for for passing through for bolt class fastener and real
Now installation is fixed.It will of course be understood that ground, can also use and be provided with cylinder body 11 or bonnet 13 for assembling fixed installation
Structure, do not limit herein.
Alternatively, as shown in Figure 2 and Figure 5, piston rod 14 is enable to be moved to work finally by hydraulic-driven to realize
Make position, offer on cylinder body 11 and be used for for the first oil transportation hole 28 of delivery hydraulic pressure oil into the first cavity 15 and offering
The second oil transportation hole 29 of delivery hydraulic pressure oil into the second cavity 16.It is additionally, since when piston rod 14 is completely in retracted mode,
The end face of piston rod 14 is to be substantially at fit-state with bonnet 13, now in order to realize the delivery hydraulic pressure into the second cavity 16
Oil, it can use and be offered on the end face relative with bonnet 13 of piston rod 14 for connecting the second oil transportation hole 29 and the second cavity 16
Oil-through-hole 30.So, when needing the delivery hydraulic pressure oil into the second cavity 16, hydraulic oil is entered by the second oil transportation hole 29
In oil-through-hole 30, then entering in the second cavity 16, and then the movement of piston rod 14 can be promoted to stretch out.
Composite oil cylinder provided in the embodiment of the present invention, by being provided with screw mandrel 17 in cylinder body 11, and pass through setting
Screw mandrel 17 is connected by feed screw nut 181 with piston rod 14, and receiving hole 141 is provided with piston rod 14, screw mandrel 17
The other end is connected with actuator.So as to, in the course of work, actuator drives screw mandrel 17 to rotate, and in the transmission of drive mechanism 18
Under move piston rod 14, and then can realize oil cylinder do not need hydraulic power in the case of can fast reaction, drive work
Stopper rod 14 quickly extends and retracts, and can also be reconverted into when soon reaching operating position by hydraulic-driven slow to realize
Fast high drive, reliably meets in actual production, when in different working condition, requires different to oil cylinder stretching speed
Use demand.Meanwhile in piston rod 14 and cylinder body 11, position that screw mandrel 17 coordinates with bonnet 13, be provided with all kinds of support rings,
The seals such as oil sealing, buffering ring 21, ensure the reliability during cylinder efficient.And this structure have it is simple and reasonable,
The advantages of compact appearance, action is quick accurately, good airproof performance, and reliability is high, meets use demand well.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of composite oil cylinder, including hollow cylinder body, the both ends of the cylinder body are connected to protecgulum and bonnet, the cylinder body
One end is inside provided with to insert through the protecgulum and the piston rod that can move back and forth in the cylinder body, the piston rod with
It is respectively formed between the cylinder body and between the bonnet for accommodating hydraulic oil, so that the piston rod can be promoted past
The first cavity and the second cavity moved again, it is characterised in that receiving hole is offered on the piston rod, connection is covered after described
Having can rotate, to drive the screw mandrel that the piston rod moves back and forth, one end of the screw mandrel be located in the receiving hole and
Drive mechanism is provided between the piston rod, the other end of the screw mandrel is connected with actuator.
2. composite oil cylinder as claimed in claim 1, it is characterised in that the drive mechanism includes feed screw nut and for by institute
The fastener that feed screw nut is fixedly connected on the piston rod is stated, the screw mandrel is located in the feed screw nut and both
Between be threadedly coupled.
3. composite oil cylinder as claimed in claim 2, it is characterised in that opened in the piston rod one side relative with the bonnet
Provided with groove, the feed screw nut is fixedly connected in the groove.
4. composite oil cylinder as claimed in claim 2, it is characterised in that the drive mechanism includes being opened in the receiving hole
Internal thread in side wall, the internal thread are meshed with the screw thread on the screw mandrel.
5. the composite oil cylinder as any one of Claims 1-4, it is characterised in that cover and be provided with for branch after described
The support component of the screw mandrel is supportted, the support component includes two-direction thrust bearing and for fixing the branch two-direction thrust bearing
Bearing plate, one end of the screw mandrel is located in the two-direction thrust bearing, and the bearing plate is resisted against described two-way
Thrust bearing.
6. composite oil cylinder as claimed in claim 5, it is characterised in that the screw mandrel, which is stretched out on one end of the bonnet, to be provided with
Screw thread, and it is connected with the locking nut for fixing the screw mandrel and the two-direction thrust bearing.
7. the composite oil cylinder as any one of Claims 1-4, it is characterised in that between the bonnet and the screw mandrel
Be provided with for assemble sealing the first support ring, buffering ring and rotating seal ring, first support ring, the buffering ring and
The rotating seal ring is spaced setting.
8. the composite oil cylinder as any one of Claims 1-4, it is characterised in that the piston rod and the cylinder body
At least one second support ring and a Bidirectional oil seal or at least one second support ring and two are provided between inwall
Unidirectional oil sealing.
9. the composite oil cylinder as any one of Claims 1-4, it is characterised in that the protecgulum and the piston rod it
Between be disposed with three-support ring, hermetic oil seal and sealing from inside to outside and be covered with dust.
10. the composite oil cylinder as any one of Claims 1-4, it is characterised in that offered on the cylinder body for
In first cavity delivery hydraulic pressure oil the first oil transportation hole and offer for into second cavity delivery hydraulic pressure oil
Second oil transportation hole, offer on the piston rod end face relative with the bonnet for connecting the second oil transportation hole and second
The oil-through-hole of cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710939850.1A CN107588056A (en) | 2017-09-30 | 2017-09-30 | Composite oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710939850.1A CN107588056A (en) | 2017-09-30 | 2017-09-30 | Composite oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107588056A true CN107588056A (en) | 2018-01-16 |
Family
ID=61053257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710939850.1A Pending CN107588056A (en) | 2017-09-30 | 2017-09-30 | Composite oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107588056A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355220A (en) * | 2022-09-22 | 2022-11-18 | 无锡君帆科技有限公司 | Hydraulic cylinder with piston rod capable of acting simultaneously |
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| CN207421019U (en) * | 2017-09-30 | 2018-05-29 | 深圳领威科技有限公司 | Composite oil cylinder |
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2017
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649851A (en) * | 2009-09-04 | 2010-02-17 | 无锡智航控制技术有限公司 | Force balance type electric cylinder featuring fluid circulation |
| CN102287416A (en) * | 2011-09-01 | 2011-12-21 | 无锡市长江液压缸厂 | Numeric hydraulic cylinder |
| CN103075385A (en) * | 2011-10-26 | 2013-05-01 | 北京精密机电控制设备研究所 | Electric servo oil cylinder |
| CN203130655U (en) * | 2013-03-13 | 2013-08-14 | 武汉海力威机电科技有限公司 | Hydraulic booster electric cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115355220A (en) * | 2022-09-22 | 2022-11-18 | 无锡君帆科技有限公司 | Hydraulic cylinder with piston rod capable of acting simultaneously |
| CN115355220B (en) * | 2022-09-22 | 2023-05-19 | 无锡君帆科技有限公司 | Hydraulic cylinder with piston rods capable of simultaneously acting |
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