CN101285490A - Tandem construction parallel reinforcement hydraulic cylinder - Google Patents
Tandem construction parallel reinforcement hydraulic cylinder Download PDFInfo
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- CN101285490A CN101285490A CNA2008101112009A CN200810111200A CN101285490A CN 101285490 A CN101285490 A CN 101285490A CN A2008101112009 A CNA2008101112009 A CN A2008101112009A CN 200810111200 A CN200810111200 A CN 200810111200A CN 101285490 A CN101285490 A CN 101285490A
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- hydraulic cylinder
- parallel reinforcement
- tandem construction
- oil hydraulic
- oil
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Abstract
The invention discloses a parallel connection reinforcement hydraulic cylinder with a series connection structure, comprising a plurality of hydraulic cylinder bodies and corresponding piston rods, which is characterized in that the plurality of hydraulic cylinder bodies are arranged axially, the piston rods are arranged longitudinally end to end, which form into the series connection, the reinforcement way is formed by the parallel connection. The piston rods are provided with central drilling holes, which are used as liquid inlet paths of liquid inlet cavities (A, C and E) of hydraulic cylinders (1, 5 and 7), while liquid return cavities (B, D and F) of the hydraulic cylinders (1, 5 and 7) are connected into liquid return paths by an external pipe or an internal passage, thereby forming the parallel connection hydraulic cylinder which outputs acting force to the outside through the piston rod (8) at the last stage.
Description
Technical field
The invention belongs to mechanical manufacturing field, relate to a kind of reinforcement hydraulic cylinder.
Background technique
Oil hydraulic cylinder is a kind of final controlling element commonly used in machine-building and hydraulic transmission field, is mainly used in displacement (straight line or movement in a curve) and the output action power transmitted.Structurally, have singly to go out rod-type, twoly go out rod-type, plunger type, piston type etc.Working principle is all utilized Pascal's static pressure principle, that is, pressure oil acts on the differential static pressure that utilizes oil cylinder both sides oil pocket on the piston end surface, and promote piston and move, simultaneously, output displacement and active force.Enter the oily flow of oil pocket by change, can change the movement velocity of piston; Amass by changing piston end face, can change the output action power of piston.In essence, in real system, existing various oil hydraulic cylinders all work alone.If, need acting in conjunction, so, have only each oil hydraulic cylinder is made up.Like this, the use at some special occasions just is restricted.
Therefore, related work personnel also making a search always, develops the oil hydraulic cylinder of some specific uses.Documents and materials show that certain researcher designs a kind of oil hydraulic cylinder in parallel, and its structure adopts the multi-cylinder split to arrange, oil pipe is set in the piston rod specially.The main purpose that designs this oil hydraulic cylinder is to increase the piston rod stroke.Chinese patent application numbers 91219376 is disclosed to be a kind of invention of automobile parallel oil cylinder jack.Be mainly used in to change in the automobile tire and support automobile.It is to be provided with left cylinder and right cylinder in the oil cylinder housing, and the choked flow mouth that is communicated with left cylinder and right cylinder top is set, and the upper right side of housing and lower-left side all have oil nozzle.As seen, its mechanism's complexity is made difficulty, and applicable situation is limited.
Summary of the invention
In view of the problem that above-mentioned existing oil hydraulic cylinder is restricted in some use occasion, the inventor has invented a kind of oil hydraulic cylinder of serial mechanism parallel reinforcement.The new-type oil hydraulic cylinder of this special construction, it is limited to be mainly used in bulk, and needs the occasion of the very big axial active force of output.
A kind of tandem construction parallel reinforcement hydraulic cylinder, it comprises a plurality of hydraulic cylinders and corresponding piston bar thereof, and described a plurality of hydraulic cylinders are axial arranged, and piston rod is vertically arranged and is joined end to end, and constitutes cascaded structure, and its reinforcement mode is in parallel formation.Piston rod is provided with central bore, and it is as the feed liquor road of the admission chamber of oil hydraulic cylinder, and the sap cavity that returns of oil hydraulic cylinder becomes go back to the liquid road with external pipe or built-in channel connection, thus, constitutes oil hydraulic cylinder in parallel, by the external output action power of the piston rod of afterbody.
Under the condition that intensity allows, described built-in passage is arranged in the hydraulic cylinder; When the cylinder wall thickness low LCL, at the described external pipe of hydraulic cylinder outer installment.
The structure of hydraulic cylinder can be an integrated type or split type, and wherein integrated type is meant: an oil hydraulic cylinder is separated into multistage hydraulic cylinder; Split type being meant: oil hydraulic cylinders at different levels are made respectively, are assembled into longitudinal construction then.
It can unidirectional output action power, the direct draining of oil hydraulic cylinder cavity of resorption, and backhaul relies on manually and solves.Perhaps the selector valve by the outside commutates the liquid that advances back of oil hydraulic cylinder admission chamber and time sap cavity, realizes the to-and-fro motion of piston rod.
Tandem construction parallel reinforcement hydraulic cylinder of the present invention, it can work alone, and also can be combined in other equipment.
Description of drawings
Accompanying drawing is the structure principle chart of three grades of tandem construction parallel reinforcement hydraulic cylinders
Embodiment
As shown in drawings, the first order is a piston hydraulic cylinder of single rod, and the second level, the third level are two rod symmetry piston-type hydraulic cylinders.According to production requirement, can increase unlimited multistage pair of rod symmetry such as the fourth stage, level V piston-type hydraulic cylinder.
Oil hydraulic cylinders at different levels are made respectively, then, vertically connect together, that is, hydraulic cylinder piston rod end surface at different levels opposite end face is connected and sealed, and Placement can be to be threaded or the flange connection.
In the outside of hydraulic cylinder, again oil pipe 2 that connects the A chamber and time sap cavity B, D, the shared oil pipe 4 of F is connected on the two-position four-way valve (or three-position four-way valve).
Cut-in pressure oil is to two-position four-way valve (or three-position four-way valve), and this tandem construction parallel reinforcement hydraulic cylinder just can to-and-fro motion, and at this moment, above-mentioned oil hydraulic cylinder admission chamber of mentioning and the fluid that returns in the sap cavity also will commutate.Can be in the external output action power in piston rod 8 ends of final stage.
The active force numerical value of output is the product of hydraulic cylinder works pressure and piston 3,6,8 useful area sums.Can perhaps change piston effective areas at different levels by changing hydraulic working pressure, perhaps change parameters such as cylinder number in parallel, change output action power numerical value, produce actual needs to satisfy.
Design procedure:, determine the maximum outside diameter that oil hydraulic cylinder allows, then at first according to the field operation requirement, select hydraulic cylinder works pressure, set piston rod central bore diameter, calculate piston rod intensity, then, determine diameter of piston rod, set the oil hydraulic cylinder internal diameter, calculate the hydraulic cylinder wall thickness, calculate the piston effective active area, calculate the maximum ouput force of oil hydraulic cylinder, active force according to actual needs, calculate the progression of oil hydraulic cylinder in parallel, design work is finished substantially.
This oil hydraulic cylinder of inventor invention, can be applied in need very big ouput force occasion.Can independently use, also can be combined in other equipment.
Claims (9)
1. tandem construction parallel reinforcement hydraulic cylinder, it comprises a plurality of hydraulic cylinders and corresponding piston bar thereof, it is characterized in that described a plurality of hydraulic cylinder is axial arranged, piston rod is vertically arranged and is joined end to end, and constitutes cascaded structure.
2. tandem construction parallel reinforcement hydraulic cylinder as claimed in claim 1 is characterized in that, its reinforcement mode is in parallel formation.
3. tandem construction parallel reinforcement hydraulic cylinder as claimed in claim 2 is characterized in that piston rod is provided with central bore, it is as the admission chamber (A of oil hydraulic cylinder (1,5,7), C, feed liquor road E), and oil hydraulic cylinder (1,5,7) time sap cavity (B, D, F) become go back to the liquid road with external pipe or built-in channel connection, thus, constitute oil hydraulic cylinder in parallel, by the external output action power of the piston rod (8) of afterbody.
4. tandem construction parallel reinforcement hydraulic cylinder as claimed in claim 3 is characterized in that, under the condition that intensity allows, described built-in passage is arranged in the hydraulic cylinder; When the cylinder wall thickness low LCL, at the described external pipe of hydraulic cylinder outer installment.
5. as the arbitrary described tandem construction parallel reinforcement hydraulic cylinder of claim 1-4, it is characterized in that the structure of hydraulic cylinder can be an integrated type or split type, wherein integrated type is meant: an oil hydraulic cylinder is separated into multistage hydraulic cylinder; Split type being meant: oil hydraulic cylinders at different levels are made respectively, are assembled into longitudinal construction then.
6. as the arbitrary described tandem construction parallel reinforcement hydraulic cylinder of claim 1-4, it is characterized in that it can unidirectional output action power, the direct draining of oil hydraulic cylinder cavity of resorption, backhaul relies on manually and solves.
7. as the arbitrary described tandem construction parallel reinforcement hydraulic cylinder of claim 1-4, it is characterized in that, the selector valve by the outside make the oil hydraulic cylinder admission chamber (A, C, E) and return sap cavity (B, D, F) advance back liquid commutation, the to-and-fro motion of realization piston rod.
8. as the arbitrary described tandem construction parallel reinforcement hydraulic cylinder of claim 1-4, it is characterized in that it can work alone, also can be combined in other equipment.
9. tandem construction parallel reinforcement hydraulic cylinder as claimed in claim 7 is characterized in that, commutates by two-position four-way valve or three-position four-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101112009A CN101285490A (en) | 2008-06-13 | 2008-06-13 | Tandem construction parallel reinforcement hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101112009A CN101285490A (en) | 2008-06-13 | 2008-06-13 | Tandem construction parallel reinforcement hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101285490A true CN101285490A (en) | 2008-10-15 |
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ID=40057848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101112009A Pending CN101285490A (en) | 2008-06-13 | 2008-06-13 | Tandem construction parallel reinforcement hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101285490A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148048A (en) * | 2013-03-26 | 2013-06-12 | 严瑞山 | Multistage-piston hydraulic tension oil cylinder |
| CN103394965A (en) * | 2013-06-21 | 2013-11-20 | 山东宏康机械制造有限公司 | Novel spindle box lifting balance system |
| CN114992189A (en) * | 2022-08-03 | 2022-09-02 | 中国矿业大学(北京) | Dynamic-static coupling high stress multi-stage loading device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3554088A (en) * | 1968-11-06 | 1971-01-12 | James Henry Bruyn | Air tool |
| US4024794A (en) * | 1973-02-02 | 1977-05-24 | Amp Incorporated | Pneumatically operated cable-slitting tool |
| CN2362688Y (en) * | 1999-03-25 | 2000-02-09 | 大连绿洲食品包装有限公司 | Cylinder boosting hydraulic cylinder |
| RU2204742C2 (en) * | 2001-05-08 | 2003-05-20 | Государственное унитарное предприятие Забайкальская железная дорога | Two-stage power hydraulic cylinder |
-
2008
- 2008-06-13 CN CNA2008101112009A patent/CN101285490A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3554088A (en) * | 1968-11-06 | 1971-01-12 | James Henry Bruyn | Air tool |
| US4024794A (en) * | 1973-02-02 | 1977-05-24 | Amp Incorporated | Pneumatically operated cable-slitting tool |
| CN2362688Y (en) * | 1999-03-25 | 2000-02-09 | 大连绿洲食品包装有限公司 | Cylinder boosting hydraulic cylinder |
| RU2204742C2 (en) * | 2001-05-08 | 2003-05-20 | Государственное унитарное предприятие Забайкальская железная дорога | Two-stage power hydraulic cylinder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148048A (en) * | 2013-03-26 | 2013-06-12 | 严瑞山 | Multistage-piston hydraulic tension oil cylinder |
| CN103394965A (en) * | 2013-06-21 | 2013-11-20 | 山东宏康机械制造有限公司 | Novel spindle box lifting balance system |
| CN114992189A (en) * | 2022-08-03 | 2022-09-02 | 中国矿业大学(北京) | Dynamic-static coupling high stress multi-stage loading device and method |
| CN114992189B (en) * | 2022-08-03 | 2022-11-01 | 中国矿业大学(北京) | Dynamic-static coupling high stress multi-stage loading device and method |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20081015 |