CN105485086A - Multi-cavity fast hydraulic oil cylinder - Google Patents
Multi-cavity fast hydraulic oil cylinder Download PDFInfo
- Publication number
- CN105485086A CN105485086A CN201610025677.XA CN201610025677A CN105485086A CN 105485086 A CN105485086 A CN 105485086A CN 201610025677 A CN201610025677 A CN 201610025677A CN 105485086 A CN105485086 A CN 105485086A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- cavity
- large piston
- end cap
- fluid port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/17—Characterised by the construction of the motor unit of the straight-cylinder type of differential-piston type
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention relates to a hydraulic oil cylinder and aims at providing a multi-cavity fast hydraulic oil cylinder which is simple in structure and capable of reducing cost and enabling a piston rod to go downward rapidly. The multi-cavity fast hydraulic oil cylinder comprises a cylinder body, a large piston rod and a small piston rod. The large piston rod is installed in the cylinder body. The diameter of the upper end of the large piston rod is matched with the inner diameter of the cylinder body. A first cavity is formed in the large piston rod. The small piston rod is installed in the first cavity. A second cavity is formed in a second piston rod. An upper end cover is fixed to the top of the cylinder body. A small end cover is fixed to the top of the upper end cover. An oil opening C is formed in the small end cover. The oil opening C is communicated with the first cavity through the second cavity. A third cavity is formed between the upper end face of the large piston rod and the upper end cover. An oil opening A and an oil opening D are formed in the upper end cover, and a first oil way and a second oil way are correspondingly formed. The oil opening A is communicated with the third cavity through the first oil way. The oil opening D is communicated with the third cavity through the second oil way. A lower end cover is installed at the bottom of the cylinder body. A fourth cavity is formed between the large piston rod and the inner wall of the cylinder body. An oil opening B is formed in the lower end of the fourth cavity.
Description
Technical field
The present invention relates to a kind of hydraulic jack, particularly relate to a kind of multi-cavity rapid hydraulic oil cylinder.
Background technique
Mostly existing hydraulic jack is single chamber oil cylinder, and the descending hourly velocity of piston rod cannot regulate, and in order to make piston rod energy fast downlink, needing to set up accumulator, adding system complexity, and adding manufacture cost.CN104863922 discloses the fast cylinder system of a kind of modified tone, comprises large and small piston rod, and by controlling the position of small piston rod, to reach the object of regulating the speed, but this cylinder structure is complicated, and amount of parts is many, and cost is high.
Summary of the invention
The technical problem to be solved in the present invention is to provide the multi-cavity rapid hydraulic oil cylinder that a kind of structure is simple, reduce costs, make piston rod energy fast downlink.
For solving the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of multi-cavity rapid hydraulic oil cylinder, comprise cylinder body, large piston rod and small piston rod, large piston rod is arranged in cylinder body, diameter and the cylinder diameter of large piston rod upper end match, the surface of contact of large piston rod and cylinder body seals, the first cavity is provided with in large piston rod, small piston rod is arranged in the first cavity, the second cavity is provided with in small piston rod, upper end cap is fixed at the top of cylinder body, through hole is offered in the middle part of upper end cap, the upper end of small piston rod is stretched in through hole, small piston rod and large piston rod, the surface of contact of upper end cap seals respectively, small end cover is fixed at the top of upper end cap, small end cover is arranged hydraulic fluid port C, hydraulic fluid port C is through the second cavity and the first cavity connects, the 3rd cavity is provided with between the upper-end surface of large piston rod and upper end cap, upper end cap is arranged hydraulic fluid port A, hydraulic fluid port D, and correspondence offers first, second oil duct, hydraulic fluid port A is through the first oil duct and the 3rd cavity connects, hydraulic fluid port D is through the second oil duct and the 3rd cavity connects, cylinder base installs lower end cap, the surface of contact of lower end cap and large piston rod seals, the 4th cavity is provided with between large piston rod and inboard wall of cylinder block, the lower end position of the 4th cavity arranges hydraulic fluid port B.
Multi-cavity rapid hydraulic oil cylinder of the present invention, further, installs cylinder sleeve between described cylinder body lower end and large piston rod, and cylinder sleeve and cylinder body, the greatly surface of contact of piston rod seal respectively.
Multi-cavity rapid hydraulic oil cylinder of the present invention, further, the lower position fastening flange of described outer wall of cylinder block.
Multi-cavity rapid hydraulic oil cylinder of the present invention, further, the surface of contact of described large piston rod and cylinder body adopts backbone sealing ring and square seal ring to seal.
Multi-cavity rapid hydraulic oil cylinder of the present invention, further, the surface of contact of described small piston rod and large piston rod adopts backbone sealing ring and square seal ring to seal, and the surface of contact of small piston rod and upper end cap adopts backbone sealing ring and O RunddichtringO to seal.
Multi-cavity rapid hydraulic oil cylinder of the present invention, further, the surface of contact of described lower end cap and large piston rod adopts backbone sealing ring to seal.
Multi-cavity rapid hydraulic oil cylinder of the present invention compared with prior art, there is following beneficial effect: be provided with large piston rod and small piston rod, greatly, first is respectively equipped with in small piston rod, second cavity, the 3rd cavity is provided with between large piston rod and upper end cap, the 4th cavity is provided with between large piston rod and cylinder body, and be provided with multiple hydraulic fluid port, during work, hydraulic oil can simultaneously through hydraulic fluid port C, hydraulic fluid port D oil-feed, large piston rod fast downlink is made to arrive the precalculated position required, then hydraulic oil can simultaneously through hydraulic fluid port A, hydraulic fluid port C oil-feed, large piston rod is made to rush at the location of workpiece of specifying fast, after pressurization is completed to workpiece, hydraulic oil can simultaneously through hydraulic fluid port A, hydraulic fluid port C, hydraulic fluid port D oil sump tank, large piston rod fast uplink is made to get back to initial state.Multi-cavity rapid hydraulic oil cylinder structure of the present invention is simple, without the need to using accumulator, reduces cost, and can realize large piston rod fast downlink and fast uplink.
Below in conjunction with accompanying drawing, multi-cavity rapid hydraulic oil cylinder of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the plan view of multi-cavity rapid hydraulic oil cylinder of the present invention.
Embodiment
As shown in Figure 1, multi-cavity rapid hydraulic oil cylinder of the present invention comprises cylinder body 1, large piston rod 2, small piston rod 3, large piston rod 2 is arranged in cylinder body 1, diameter and cylinder body 1 internal diameter of large piston rod 2 upper end match, large piston rod 2 seals with the surface of contact of cylinder body 1, the first cavity 21 is provided with in large piston rod 2, small piston rod 3 is arranged in the first cavity 21, the second cavity 31 is provided with in small piston rod 3, upper end cap 4 is fixed at the top of cylinder body 1, through hole is offered in the middle part of upper end cap 4, the upper end of small piston rod 3 is stretched in through hole, small piston rod 3 and large piston rod 2, the surface of contact of upper end cap 4 seals respectively, the top of upper end cap 4 is bolted small end cover 5, small end cover 5 is arranged hydraulic fluid port C, hydraulic fluid port C is communicated with the first cavity 21 through the second cavity 31.The 3rd cavity 6 is provided with between the upper-end surface of large piston rod 2 and upper end cap 4, upper end cap 4 is arranged hydraulic fluid port A, hydraulic fluid port D, and correspondence is offered first, second oil duct 41,42, hydraulic fluid port A and is communicated with the 3rd cavity 6 through the first oil duct 41, hydraulic fluid port D is communicated with the 3rd cavity 6 through the second oil duct 42.
Install cylinder sleeve 7 between cylinder body 1 lower end and large piston rod 2, cylinder sleeve 7 seals respectively with the surface of contact of cylinder body 1, large piston rod 2.Install lower end cap 8 by bolt bottom cylinder body 1, lower end cap 8 seals with the surface of contact of large piston rod 2.The lower end position being provided with the 4th cavity the 9, four cavity 9 between large piston rod 2 and cylinder body 1 inwall arranges hydraulic fluid port B.The lower position fastening flange 10 of cylinder body 1 outer wall.
In multi-cavity rapid hydraulic oil cylinder of the present invention, the above-mentioned sealing related between two component contact faces can adopt O RunddichtringO, backbone sealing ring, square seal ring and combination thereof etc.As shown in the figure, the surface of contact of large piston rod and cylinder body adopts backbone sealing ring and square seal ring to seal, the surface of contact of small piston rod and large piston rod adopts backbone sealing ring and square seal ring to seal, the surface of contact of small piston rod and upper end cap adopts backbone sealing ring and O RunddichtringO to seal, and the surface of contact of lower end cap and large piston rod adopts backbone sealing ring to seal.
The hydraulic work principle of multi-cavity rapid hydraulic oil cylinder of the present invention is as follows:
1, when press machine is started working, first the quick precompressed of oil cylinder, hydraulic oil, through hydraulic fluid port C oil-feed, flows to the first cavity 21 by the second cavity 31, make large piston rod 2 fast downlink, precalculated position required by arrival, when large piston rod 2 is descending, the 3rd cavity 6 can form vacuum, therefore while hydraulic fluid port C oil-feed, hydraulic fluid port D open imbibition force feed from fuel tank supplement large piston rod 2 descending time the 3rd cavity 6 space, simultaneously hydraulic fluid port B opens and is in unloading condition, and now hydraulic fluid port A does not work.
2, when large piston rod 2 arrives precalculated position, close hydraulic fluid port D, open hydraulic fluid port A, make hydraulic oil enter the 3rd cavity 6 through hydraulic fluid port A and produce high pressure, now hydraulic fluid port A, hydraulic fluid port C oil-feed simultaneously makes large piston rod 2 under high pressure rush at the location of workpiece of specifying fast, and now hydraulic fluid port B opens and is still in unloading condition.
3, after pressurization being completed to workpiece, hydraulic fluid port A and hydraulic fluid port C oil-feed is stopped immediately, control port B oil-feed, open hydraulic fluid port D, now hydraulic fluid port A, hydraulic fluid port C, hydraulic fluid port D are in unloading condition, hydraulic oil oil sump tank simultaneously, large piston rod 2 fast uplink, gets back to initial state, forms a cyclic.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technological scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (6)
1. a multi-cavity rapid hydraulic oil cylinder, comprise cylinder body, it is characterized in that: also comprise large piston rod and small piston rod, large piston rod is arranged in cylinder body, diameter and the cylinder diameter of large piston rod upper end match, the surface of contact of large piston rod and cylinder body seals, the first cavity is provided with in large piston rod, small piston rod is arranged in the first cavity, the second cavity is provided with in small piston rod, upper end cap is fixed at the top of cylinder body, through hole is offered in the middle part of upper end cap, the upper end of small piston rod is stretched in through hole, small piston rod and large piston rod, the surface of contact of upper end cap seals respectively, small end cover is fixed at the top of upper end cap, small end cover is arranged hydraulic fluid port C, hydraulic fluid port C is through the second cavity and the first cavity connects, the 3rd cavity is provided with between the upper-end surface of large piston rod and upper end cap, upper end cap is arranged hydraulic fluid port A, hydraulic fluid port D, and correspondence offers first, second oil duct, hydraulic fluid port A is through the first oil duct and the 3rd cavity connects, hydraulic fluid port D is through the second oil duct and the 3rd cavity connects, cylinder base installs lower end cap, the surface of contact of lower end cap and large piston rod seals, the 4th cavity is provided with between large piston rod and inboard wall of cylinder block, the lower end position of the 4th cavity arranges hydraulic fluid port B.
2. multi-cavity rapid hydraulic oil cylinder according to claim 1, is characterized in that: install cylinder sleeve between described cylinder body lower end and large piston rod, and cylinder sleeve and cylinder body, the greatly surface of contact of piston rod seal respectively.
3. multi-cavity rapid hydraulic oil cylinder according to claim 2, is characterized in that: the lower position fastening flange of described outer wall of cylinder block.
4. the multi-cavity rapid hydraulic oil cylinder according to any one of claim 1-3, is characterized in that: the surface of contact of described large piston rod and cylinder body adopts backbone sealing ring and square seal ring to seal.
5. the multi-cavity rapid hydraulic oil cylinder according to any one of claim 1-3, it is characterized in that: the surface of contact of described small piston rod and large piston rod adopts backbone sealing ring and square seal ring to seal, the surface of contact of small piston rod and upper end cap adopts backbone sealing ring and O RunddichtringO to seal.
6. the multi-cavity rapid hydraulic oil cylinder according to any one of claim 1-3, is characterized in that: the surface of contact of described lower end cap and large piston rod adopts backbone sealing ring to seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025677.XA CN105485086A (en) | 2016-01-14 | 2016-01-14 | Multi-cavity fast hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025677.XA CN105485086A (en) | 2016-01-14 | 2016-01-14 | Multi-cavity fast hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105485086A true CN105485086A (en) | 2016-04-13 |
Family
ID=55672289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610025677.XA Pending CN105485086A (en) | 2016-01-14 | 2016-01-14 | Multi-cavity fast hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105485086A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339071A (en) * | 2017-02-24 | 2017-11-10 | 中建钢构有限公司 | A kind of floating type well drilling heave compensator |
| CN107387489A (en) * | 2017-09-01 | 2017-11-24 | 董祥义 | A kind of double acting oil cylinder of single plunger |
| CN107999594A (en) * | 2017-12-20 | 2018-05-08 | 马鞍山创诚中小企业服务中心有限公司 | Stroke accurately controls decompressor |
| CN108115029A (en) * | 2017-12-20 | 2018-06-05 | 马鞍山创诚中小企业服务中心有限公司 | Numerical control press process for stamping |
| CN108397440A (en) * | 2018-04-11 | 2018-08-14 | 江阴市军炫智能装备有限公司 | A kind of fast unit for medium-and-large-sized hydraulic pressure metal bits cuber |
| CN109681488A (en) * | 2019-01-05 | 2019-04-26 | 叶伟强 | A kind of rapid hydraulic oil cylinder |
| CN112343887A (en) * | 2020-11-25 | 2021-02-09 | 无锡欧曼液压科技有限公司 | Novel metallurgical manipulator clamping oil cylinder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2204742C2 (en) * | 2001-05-08 | 2003-05-20 | Государственное унитарное предприятие Забайкальская железная дорога | Two-stage power hydraulic cylinder |
| CN2718298Y (en) * | 2004-06-28 | 2005-08-17 | 天津市天锻压力机有限公司 | Hydraulic press fast cylinder for warm and cold extrusion |
| CN102242746A (en) * | 2011-06-12 | 2011-11-16 | 江苏维达机械有限公司 | Hydraulic push rod device |
| KR20150074530A (en) * | 2013-12-24 | 2015-07-02 | 볼보 컨스트럭션 이큅먼트 에이비 | Hydaulic cylinder for construction machine |
| CN204512056U (en) * | 2015-02-12 | 2015-07-29 | 湖南奥盛特重工科技有限公司 | A kind of rotary drilling rig hydraulic jack |
| CN104863922A (en) * | 2015-05-29 | 2015-08-26 | 大连宏远气动液压船舶辅机有限公司 | Speed changing/regulating hydraulic cylinder device |
| CN205349914U (en) * | 2016-01-14 | 2016-06-29 | 徐州奥博机械科技有限公司 | Quick hydraulic cylinder of multicavity |
-
2016
- 2016-01-14 CN CN201610025677.XA patent/CN105485086A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2204742C2 (en) * | 2001-05-08 | 2003-05-20 | Государственное унитарное предприятие Забайкальская железная дорога | Two-stage power hydraulic cylinder |
| CN2718298Y (en) * | 2004-06-28 | 2005-08-17 | 天津市天锻压力机有限公司 | Hydraulic press fast cylinder for warm and cold extrusion |
| CN102242746A (en) * | 2011-06-12 | 2011-11-16 | 江苏维达机械有限公司 | Hydraulic push rod device |
| KR20150074530A (en) * | 2013-12-24 | 2015-07-02 | 볼보 컨스트럭션 이큅먼트 에이비 | Hydaulic cylinder for construction machine |
| CN204512056U (en) * | 2015-02-12 | 2015-07-29 | 湖南奥盛特重工科技有限公司 | A kind of rotary drilling rig hydraulic jack |
| CN104863922A (en) * | 2015-05-29 | 2015-08-26 | 大连宏远气动液压船舶辅机有限公司 | Speed changing/regulating hydraulic cylinder device |
| CN205349914U (en) * | 2016-01-14 | 2016-06-29 | 徐州奥博机械科技有限公司 | Quick hydraulic cylinder of multicavity |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339071A (en) * | 2017-02-24 | 2017-11-10 | 中建钢构有限公司 | A kind of floating type well drilling heave compensator |
| CN107387489A (en) * | 2017-09-01 | 2017-11-24 | 董祥义 | A kind of double acting oil cylinder of single plunger |
| CN107999594A (en) * | 2017-12-20 | 2018-05-08 | 马鞍山创诚中小企业服务中心有限公司 | Stroke accurately controls decompressor |
| CN108115029A (en) * | 2017-12-20 | 2018-06-05 | 马鞍山创诚中小企业服务中心有限公司 | Numerical control press process for stamping |
| CN108397440A (en) * | 2018-04-11 | 2018-08-14 | 江阴市军炫智能装备有限公司 | A kind of fast unit for medium-and-large-sized hydraulic pressure metal bits cuber |
| CN109681488A (en) * | 2019-01-05 | 2019-04-26 | 叶伟强 | A kind of rapid hydraulic oil cylinder |
| CN112343887A (en) * | 2020-11-25 | 2021-02-09 | 无锡欧曼液压科技有限公司 | Novel metallurgical manipulator clamping oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160413 |
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| RJ01 | Rejection of invention patent application after publication |