CN103115038A - Novel buffering oil cylinder for hydraulic pump station - Google Patents
Novel buffering oil cylinder for hydraulic pump station Download PDFInfo
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- CN103115038A CN103115038A CN2013100314998A CN201310031499A CN103115038A CN 103115038 A CN103115038 A CN 103115038A CN 2013100314998 A CN2013100314998 A CN 2013100314998A CN 201310031499 A CN201310031499 A CN 201310031499A CN 103115038 A CN103115038 A CN 103115038A
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Abstract
The invention relates to a novel buffering oil cylinder for a hydraulic pump station. The novel buffering oil cylinder for the hydraulic pump station is characterized in that two oil lines are respectively arranged on two sides of the oil cylinder, namely an oil inlet line which is placed in a non-rod cavity and an oil line which is placed in the rod cavity; the two oil lines are respectively composed of two pairs of branch lines, namely and respectively, a first inner branch line and a first outer branch line, a second inner branch line and a second outer branch line, wherein inner oil inlets of the first inner branch line and the second inner branch line are respectively formed in two sides on the inner wall surface of the cylinder above a piston, and the inner oil inlets of the first outer branch line and the second outer branch line are respectively formed in the cylinder cover at left and right ends of the piston. According to the novel buffering oil cylinder for the hydraulic pump station, the buffering distance can reach below 10mm, the piston is adopted to replace a traditional cylindrical cone body to cover the oil port, one oil port is designed to be arranged on the inner wall of the cylinder, and the piston is utilized to close the oil port. Due to the facts that the cylinder and the piston are a pair of parts matched accurately, and the distance between the cylinder and the piston is small, oil lines can be shut down instantly, processing is easy, and therefore buffering stroke is small, and buffering effect is good.
Description
Technical field
The present invention relates to the hydraulics field, relate in particular to a kind of for the New Buffering oil cylinder on hydraulic power unit.
Background technique
In the hydraulics field, the cushion cylinder that generally uses at present generally with a filler opening and a return opening, arranges damping hole and buffer plunger at the afterbody of oil cylinder, and its cushioning effect is general.Many oil cylinders collided when preventing its piston at the two ends high-speed motion in when motion, rod chamber and rodless cavity at oil cylinder are designed with damping device, the principle of its buffering is at the two ends of piston, a taper column cap to be housed respectively, when piston movement arrives two ends, conical column is progressively stifled disconnected with normal oil circuit, reaches the throttling buffering effect.Cumulative error because of processing and assembling, conical column structure wherein is difficult to also effectively cut off immediately with one heart oil circuit with cushion hole, so the single head buffer distance of general design has 20 ~ 30mm, and often having the bad problem of cushioning effect occurs, be that the too high meeting of processing precise requirement significantly increases cost, processing request is too low is difficult to again guarantee good cushioning effect, or a little less than cushioning too, cushion too firmly, do not reach designing requirement; Particularly sort buffer just has 20 ~ 30mm apart from single head, and 40 ~ 60mm is just arranged during double end, when using in the short stroke oil cylinder, if when stroke only has 40 ~ 50mm, just can't adopt the sort buffer principle.Therefore, need in conjunction with above analysis, prior art effectively be innovated.
Summary of the invention
For above defective, the invention provides that a kind of buffer distance can reach that 10mm is following, throttling buffering successful, machining accuracy are high, be conducive to reduce costs be used for New Buffering oil cylinder on hydraulic power unit, to solve many deficiencies of prior art.
For achieving the above object, the present invention is by the following technical solutions:
a kind of for the New Buffering oil cylinder on hydraulic power unit, be positioned at oil cylinder both sides and offer respectively two oil circuits, namely be positioned at the in-line of rodless cavity, be positioned at the oil circuit of rod chamber, described two oil circuits are comprised of two pairs of branch roads again separately, namely be respectively interior branch road one and outer branch road one, interior branch road two and outer branch road two, a piston and this piston are set in interior branch road one and two unrestricted motions of interior branch road in the cylinder cavity between interior branch road one and interior branch road two these two branch roads, interior branch road one wherein and the inside filler opening of interior branch road two are opened in respectively the inner wall of cylinder face both sides of piston top, outer branch road one wherein is opened in respectively on the cylinder cap of two ends, piston left and right with the inside filler opening of outer branch road two.
Be positioned at and an one-way throttle valve and this two oil circuits cylinder cap by two ends is housed respectively on outer branch road one and outer branch road two these two branch roads enters oil cylinder inside.During to left movement, described piston left end slides and this filler opening is blocked along the inside filler opening of interior branch road one when piston; When piston reverses direction moved right, described piston right-hand member slided and this filler opening is blocked along the inside filler opening of interior branch road two.
Beneficial effect for the New Buffering oil cylinder on hydraulic power unit of the present invention is:
⑴ buffer distance can reach below 10mm; Every of oil cylinder has two hydraulic fluid ports, and one is normal hydraulic fluid port, is made on cylinder barrel, and another is the hydraulic fluid port with one-way throttle valve, and design is on cylinder cap; When piston movement arrived the centre, these two hydraulic fluid ports can work, and seesawed with normally oil cylinder is the same; When piston movement arrived two ends, piston can hide the hydraulic fluid port of holding on cylinder barrel, and fluid can only flow out by the hydraulic fluid port with throttle valve, thereby can reach the throttling buffering effect, regulates the degree of tightness of throttle valve, can regulate the throttling cushioning effect; During reversing motion, be one-way throttle valve on the hydraulic fluid port on cylinder cap, oil-feed can unrestrictedly flow into, and pushing piston moves to the other end, and after the hydraulic fluid port on cylinder barrel, this hydraulic fluid port is also opened, and flows into fluid, and oil cylinder normally moves to the other end; Equally, when the oilhole on the cylinder barrel that arrives the other end, piston covers this hydraulic fluid port, and the oil cylinder inner fluid can only flow out by another throttle valve, reaches the throttling buffering effect.
⑵ by adopting piston to replace traditional cylinder centrum to hide hydraulic fluid port, one of them hydraulic fluid port is designed on inner wall of cylinder, close this hydraulic fluid port with piston, because cylinder barrel and piston are exactly originally the very accurate part of a pair of cooperation, gap between them is very little, can accomplish to close immediately oil circuit, and good processing, so it is very little that cushion stroke can be accomplished, and good cushioning effect is arranged; And another cavity that traditional cone buffering coordinates is that design is on end cap, it is to be formed by the several part accumulations such as cylinder barrel, piston rod, cone with the gap between cone, so that can not do is very little, thereby buffer distance is long, many shortcomings such as the bad control of cushioning effect and machining accuracy height.
Description of drawings
The below is described in further detail the present invention with reference to the accompanying drawings.
Fig. 1 is that the embodiment of the present invention is described for the New Buffering cylinder structure schematic diagram on hydraulic power unit.
Embodiment
as shown in Figure 1, the embodiment of the present invention is described for the New Buffering oil cylinder on hydraulic power unit, be positioned at oil cylinder both sides and offer respectively two oil circuits, namely be positioned at the in-line A of rodless cavity, be positioned at the oil circuit B of rod chamber, these two oil circuits are comprised of two pairs of branch roads again separately, namely be respectively A1 and A2, B1 and B2, a piston and this piston are set in the cylinder cavity between A1 and two branch roads of B1 are unrestricted motion between A1 and B1, the inside filler opening of A1 wherein and B1 branch road is opened in respectively the inner wall of cylinder face both sides with the piston movement perpendicular direction, the inside filler opening of A2 wherein and B2 branch road is opened in respectively the piston left and right sides, be positioned at and an one-way throttle valve and this two oil circuits are housed respectively on these two branch roads of A2 and B2 enter respectively oil cylinder inside by the two ends cylinder cap.
The above embodiment of the present invention is described for the New Buffering oil cylinder on hydraulic power unit, when piston continues to left movement, can gradually the A1 mouth be hidden, play initial cushioning effect, when piston continues to left movement, fully with after the covering of A1 mouth, fluid can only go out to flow out from the throttle valve of A2 mouth, reach very strong throttling buffering effect, the throttle power that flows out fluid can make piston stop gradually; When piston when oppositely moving right, fluid is by the unrestricted inflow of A2, the fluid pushing piston moves right, until during the B1 point, the fluid that flows to the B mouth is subjected to again throttling, then after further the B1 mouth being hidden fully, fluid can only flow out from the B2 hydraulic fluid port with throttle valve, throttle valve on the B2 mouth will make the fluid of outflow produce very large back pressure, thereby make piston slow stopping gradually; Like this, the oil cylinder of high-speed motion can reach at two ends good cushioning effect.
Above embodiment is more preferably embodiment a kind of of the present invention, the common variation that those skilled in the art carry out in the technical program scope and replace and should be included in protection scope of the present invention.
Claims (3)
1. New Buffering oil cylinder that is used on hydraulic power unit, be positioned at oil cylinder both sides and offer respectively two oil circuits, namely be positioned at the in-line of rodless cavity, be positioned at the oil circuit of rod chamber, it is characterized in that: described two oil circuits are comprised of two pairs of branch roads again separately, namely be respectively interior branch road one and outer branch road one, interior branch road two and outer branch road two, a piston and this piston are set in interior branch road one and two unrestricted motions of interior branch road in the cylinder cavity between interior branch road one and interior branch road two these two branch roads, interior branch road one wherein and the inside filler opening of interior branch road two are opened in respectively the inner wall of cylinder face both sides of piston top, outer branch road one wherein is opened in respectively on the cylinder cap of two ends, piston left and right with the inside filler opening of outer branch road two, be positioned at and an one-way throttle valve and this two oil circuits cylinder cap by two ends is housed respectively on outer branch road one and outer branch road two these two branch roads enters oil cylinder inside.
2. according to claim 1 for the New Buffering oil cylinder on hydraulic power unit, it is characterized in that: during to left movement, described piston left end slides and this filler opening is blocked along the inside filler opening of interior branch road one when piston.
3. according to claim 1 for the New Buffering oil cylinder on hydraulic power unit, it is characterized in that: when piston reverses direction moved right, described piston right-hand member slided and this filler opening is blocked along the inside filler opening of interior branch road two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100314998A CN103115038A (en) | 2013-01-28 | 2013-01-28 | Novel buffering oil cylinder for hydraulic pump station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100314998A CN103115038A (en) | 2013-01-28 | 2013-01-28 | Novel buffering oil cylinder for hydraulic pump station |
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| CN103115038A true CN103115038A (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013100314998A Pending CN103115038A (en) | 2013-01-28 | 2013-01-28 | Novel buffering oil cylinder for hydraulic pump station |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994125A (en) * | 2014-05-20 | 2014-08-20 | 长沙达豪机械设备有限公司 | Adjustable bi-directional buffering oil cylinder |
| CN104235115A (en) * | 2014-09-17 | 2014-12-24 | 青特集团有限公司 | Running buffer type hydraulic oil cylinder |
| CN104358741A (en) * | 2014-10-30 | 2015-02-18 | 蚌埠市行星工程机械有限公司 | Hydraulic oil cylinder with buffering function |
| CN105240241A (en) * | 2015-10-23 | 2016-01-13 | 宝鸡石油机械有限责任公司 | Full-hydraulic modularized fracturing pump |
| CN105864147A (en) * | 2016-04-26 | 2016-08-17 | 英诺威阀业有限公司 | Damping oil cylinder |
| CN112727814A (en) * | 2020-12-28 | 2021-04-30 | 浙江大学 | Variable-speed and variable-displacement single-rod electro-hydraulic actuator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07269519A (en) * | 1994-03-30 | 1995-10-17 | Shin Caterpillar Mitsubishi Ltd | Cushioning structure for hydraulic cylinder |
| CN2736577Y (en) * | 2004-10-20 | 2005-10-26 | 攀枝花钢铁有限责任公司机械制造分公司 | External hydraulic cylinder buffering exhaust device |
| CN200943614Y (en) * | 2006-08-23 | 2007-09-05 | 郭锡南 | Buffering oil cylinder |
| CN202493523U (en) * | 2012-03-30 | 2012-10-17 | 杨奉钦 | Buffer device of oil cylinder |
| CN202628674U (en) * | 2012-05-17 | 2012-12-26 | 太仓奥科机械设备有限公司 | Air cylinder cushion device |
-
2013
- 2013-01-28 CN CN2013100314998A patent/CN103115038A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07269519A (en) * | 1994-03-30 | 1995-10-17 | Shin Caterpillar Mitsubishi Ltd | Cushioning structure for hydraulic cylinder |
| CN2736577Y (en) * | 2004-10-20 | 2005-10-26 | 攀枝花钢铁有限责任公司机械制造分公司 | External hydraulic cylinder buffering exhaust device |
| CN200943614Y (en) * | 2006-08-23 | 2007-09-05 | 郭锡南 | Buffering oil cylinder |
| CN202493523U (en) * | 2012-03-30 | 2012-10-17 | 杨奉钦 | Buffer device of oil cylinder |
| CN202628674U (en) * | 2012-05-17 | 2012-12-26 | 太仓奥科机械设备有限公司 | Air cylinder cushion device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994125A (en) * | 2014-05-20 | 2014-08-20 | 长沙达豪机械设备有限公司 | Adjustable bi-directional buffering oil cylinder |
| CN103994125B (en) * | 2014-05-20 | 2016-01-13 | 长沙达豪机械设备有限公司 | Adjustable Bidirectional cushion cylinder |
| CN104235115A (en) * | 2014-09-17 | 2014-12-24 | 青特集团有限公司 | Running buffer type hydraulic oil cylinder |
| CN104358741A (en) * | 2014-10-30 | 2015-02-18 | 蚌埠市行星工程机械有限公司 | Hydraulic oil cylinder with buffering function |
| CN105240241A (en) * | 2015-10-23 | 2016-01-13 | 宝鸡石油机械有限责任公司 | Full-hydraulic modularized fracturing pump |
| CN105864147A (en) * | 2016-04-26 | 2016-08-17 | 英诺威阀业有限公司 | Damping oil cylinder |
| CN112727814A (en) * | 2020-12-28 | 2021-04-30 | 浙江大学 | Variable-speed and variable-displacement single-rod electro-hydraulic actuator |
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Application publication date: 20130522 |