CN203189381U - Double-piston high-thrust hydraulic cylinder - Google Patents
Double-piston high-thrust hydraulic cylinder Download PDFInfo
- Publication number
- CN203189381U CN203189381U CN 201320121873 CN201320121873U CN203189381U CN 203189381 U CN203189381 U CN 203189381U CN 201320121873 CN201320121873 CN 201320121873 CN 201320121873 U CN201320121873 U CN 201320121873U CN 203189381 U CN203189381 U CN 203189381U
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- piston
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- pistons
- piston rod
- guide sleeve
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Abstract
The utility model relates to a double-piston high-thrust hydraulic cylinder. The double-piston high-thrust hydraulic cylinder comprises a cylinder barrel, pistons, a piston rod and a guide sleeve, wherein the two pistons are arranged on the piston rod, the outer diameter part of the guide sleeve is fixedly connected with the cylinder barrel and the divides the cylinder barrel into two cavities with the same length. The rod diameter part, between the two pistons, of the piston rod is sealed inside a hole of the guide sleeve in a matched mode, so that the two pistons fall into the two cavities in the cylinder barrel respectively. Due to the fact that the guide sleeve divides a barrel cavity of a traditional cylinder into the two cavities with the same length and the two pistons of the piston rod and the two cavities form two series-connection-type cylinders, when pressure oil enters the cavities, on the same side, of the two hydraulic cylinders, the piston rods move towards the direction of acting force and bear common thrust on the side faces of the two pistons, and high thrust can be obtained under the condition that the cylinder diameters and system pressure are not changed.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, and particularly a kind of oil hydraulic cylinder is realized the dual-piston structure of high thrust, belongs to hydraulic element design and manufacturing technology field.
Background technique
Traditional piston-type hydraulic cylinder, comprise that asymmetric servo cylinder and two rod oil hydraulic cylinder all are divided into oil suction chamber and go out oil pocket by the oil pocket of a piston with oil hydraulic cylinder, when pressure oil enters two chambeies respectively by oilhole, it is reciprocating just to promote piston drive piston rod, the thrust P=10pA(N of piston), p is that working pressure, the A of oil suction chamber is that pressure oil acts on the real work area (cm2) on the piston in the formula.As seen from the above equation, under the situation that does not change oil suction chamber working pressure p, increase the thrust P of piston, have only by increasing piston the real work area A namely: the cylinder diameter that increases oil hydraulic cylinder could be realized.Yet in some real work occasions, the increase of cylinder diameter often is subjected to the restriction of external environment condition and is not allowed to, and remaining way has the working pressure p that improves oil suction chamber only.Thus, must reselect powerful oil pump and with the relevant hydraulic pressure components and parts of its coupling, not only increased the cost of Hydraulic Power Transmission System, and caused the energy dissipation of system.
Summary of the invention
The purpose of this utility model is to provide a kind of double-piston high thrust oil hydraulic cylinder, under the prerequisite that does not change system works pressure and cylinder diameter, realizes the thrust multiplication of oil hydraulic cylinder.
The utility model realizes that the technological scheme of above-mentioned purpose is: a kind of double-piston high thrust oil hydraulic cylinder, comprise cylinder barrel, piston, piston rod, guide sleeve, end cap and gland, cylinder barrel is respectively by gland and aperture, end cap shutoff two ends, constitute the inner chamber of oil hydraulic cylinder, piston rod one end is inserted inner chamber, an end stretches out outside the end cap, it is characterized in that:
The fixedly connected cylinder barrel of the external diameter of described guide sleeve, and cylinder barrel is divided into the chamber of two equal in length;
Described piston rod places the bar portion of oil hydraulic cylinder inner chamber to be provided with two pistons, and two pistons place two chambers respectively;
Bar footpath on the described piston rod between the two-piston is sealed and matched with the hole of guide sleeve;
The cylinder barrel wall section of described two chambers is not provided with two into and out of oilhole, and two lay respectively at each into and out of oilhole
Two ends from chamber.
The utility model is divided into the cylinder chamber of conventional cylinder by guide sleeve the chamber of two equal in length, and form two in-line oil hydraulic cylinders with two chambers respectively by two pistons on the piston rod, when pressure oil enters homonymy chamber in two oil hydraulic cylinders simultaneously by oil inlet hole in, and when oil pressure being acted on the active area of two-piston homonymy, piston rod moves to force direction, and obtains the common thrust on the two-piston side.Because the active area on the two-piston is greater than the active area on the piston, therefore, the common thrust on the two-piston is greater than the thrust on the piston.
The utlity model has reasonable in design, simple in structure, under the situation that does not change cylinder diameter and system pressure, can obtain the advantage than high thrust.
Description of drawings
Accompanying drawing 1 is structural principle schematic representation of the present utility model.
In accompanying drawing 1: 1 cylinder barrel, 2 end caps, 3 Sealings, 4 and 4 ' piston, 5 guide sleeves, 6 piston rods, 7 glands, are into and out of oilhole at a1, b1, a2, b2.
Embodiment
As shown in Figure 1, double-piston high thrust oil hydraulic cylinder described in the utility model by cylinder barrel 1, end cap 2, Sealing 3, piston 4 and 4 ', guide sleeve 5, piston rod 6, gland 7 form.Cylinder barrel 1 constitutes the inner chamber of oil hydraulic cylinder respectively by gland 7 and aperture, end cap 2 shutoff two ends; Piston rod 6 one ends are inserted inner chamber, an end stretches out outside the end cap 2; The fixedly connected cylinder barrel 1 of the external diameter of guide sleeve 5, and the chamber that cylinder barrel 1 is divided into two equal in length, cylinder barrel 1 wall section of two chambers is not provided with two into and out of oilhole a1, b1 and a2, b2, and two lay respectively at the two ends of chamber separately into and out of oilhole a1, b1 and a2, b2; Piston rod 6 place the bar portion of oil hydraulic cylinder inner chamber be provided with two pistons 4 and 4 ', and two pistons 4 and 4 ' respectively place two chambers; Two-piston 4 and 4 on the piston rod 6 ' between the hole of bar footpath and guide sleeve 5 be sealed and matched, the oil hydraulic cylinder that formation is made of cylinder barrel 1, end cap 2, guide sleeve 5, piston rod 6, piston 4 and Sealing 3 is by cylinder barrel 1, gland 2, guide sleeve 5, piston rod 6, piston 4 ' and another oil hydraulic cylinder of constituting of Sealing 3.
During work, when pressure oil entered homonymy chamber in two oil hydraulic cylinders respectively by oil inlet hole a1 and a2 in, oil return was when oil outlet b1 and b2 stay oil sump tank, and piston rod 6 is to the motion of oil pressure force direction, and obtained the common thrust on two-piston 4 and the 4 ' same side.If common thrust is F, the thrust of one oil hydraulic cylinder is F1, the thrust of another oil hydraulic cylinder is F2, active area on the piston 4 is S1, piston 4 ' on active area be S2, P is system works pressure, then F=F1+ F2=P(S1+ S2), therefore and the thrust of conventional cylinder only is PS2, thrust P(S1+ S2 of the present utility model) greater than the thrust PS2 of conventional cylinder.Realized not changing system pressure and not increasing under the situation of cylinder diameter, improved the effect of thrust hydraulic cylinder.
Claims (1)
1. double-piston high thrust oil hydraulic cylinder, comprise cylinder barrel, piston, piston rod, guide sleeve, end cap and gland, cylinder barrel constitutes the inner chamber of oil hydraulic cylinder respectively by gland and aperture, end cap shutoff two ends, piston rod one end is inserted inner chamber, an end stretches out outside the end cap, it is characterized in that:
The fixedly connected cylinder barrel of the external diameter of described guide sleeve, and cylinder barrel is divided into the chamber of two equal in length;
Described piston rod places the bar portion of oil hydraulic cylinder inner chamber to be provided with two pistons, and two pistons place two chambers respectively;
Bar footpath on the described piston rod between the two-piston is sealed and matched with the hole of guide sleeve;
The cylinder barrel wall section of described two chambers is not provided with two into and out of oilhole, and two lay respectively at each into and out of oilhole
Two ends from chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121873 CN203189381U (en) | 2013-03-18 | 2013-03-18 | Double-piston high-thrust hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121873 CN203189381U (en) | 2013-03-18 | 2013-03-18 | Double-piston high-thrust hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189381U true CN203189381U (en) | 2013-09-11 |
Family
ID=49106243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320121873 Expired - Fee Related CN203189381U (en) | 2013-03-18 | 2013-03-18 | Double-piston high-thrust hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189381U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088850A (en) * | 2014-07-06 | 2014-10-08 | 上海宏信设备工程有限公司 | Oblique cone type combined oblique-con self-locking hydraulic oil cylinder |
| WO2015010630A1 (en) * | 2013-07-24 | 2015-01-29 | 常州市瑞泰工程机械有限公司 | Overlap removing oil cylinder, and flash butt welder having asymmetric-cross-section trough-type rail and using same |
| CN106246634A (en) * | 2016-08-12 | 2016-12-21 | 哈尔滨工业大学 | A kind of air-float zero-friction air cylinder of dual-piston structure |
| CN113503287A (en) * | 2021-07-01 | 2021-10-15 | 燕山大学 | Double-cylinder barrel symmetric double-piston hydraulic cylinder without cylinder cover |
-
2013
- 2013-03-18 CN CN 201320121873 patent/CN203189381U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015010630A1 (en) * | 2013-07-24 | 2015-01-29 | 常州市瑞泰工程机械有限公司 | Overlap removing oil cylinder, and flash butt welder having asymmetric-cross-section trough-type rail and using same |
| CN104088850A (en) * | 2014-07-06 | 2014-10-08 | 上海宏信设备工程有限公司 | Oblique cone type combined oblique-con self-locking hydraulic oil cylinder |
| CN106246634A (en) * | 2016-08-12 | 2016-12-21 | 哈尔滨工业大学 | A kind of air-float zero-friction air cylinder of dual-piston structure |
| CN113503287A (en) * | 2021-07-01 | 2021-10-15 | 燕山大学 | Double-cylinder barrel symmetric double-piston hydraulic cylinder without cylinder cover |
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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: 20130911 Termination date: 20150318 |
|
| EXPY | Termination of patent right or utility model |