CN100337041C - Single rod double acting symmetrical hydraulic cylinder with built-in displacement sensor - Google Patents
Single rod double acting symmetrical hydraulic cylinder with built-in displacement sensor Download PDFInfo
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- CN100337041C CN100337041C CNB2003101089989A CN200310108998A CN100337041C CN 100337041 C CN100337041 C CN 100337041C CN B2003101089989 A CNB2003101089989 A CN B2003101089989A CN 200310108998 A CN200310108998 A CN 200310108998A CN 100337041 C CN100337041 C CN 100337041C
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- piston rod
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Abstract
The present invention discloses a single output rod double action type symmetrical hydraulic cylinder in which displacement sensors are arranged. One end of an inner cylinder barrel is connected with an outer cylinder barrel, and a piston connected with one end of a hollow piston rod is arranged between the inner cylinder barrel and the outer cylinder barrel, wherein the piston forms a sliding fit with the inner cylinder barrel and the outer cylinder barrel; the piston rod is sheathed outside the inner cylinder barrel, and forms a sliding fit with the other end of the other end hole of the outer cylinder barrel; the displacement sensors are arranged in the piston rod and the inner cylinder barrel; one end of a main body is fixed at the top end of the piston rod; the sliding sleeves of the displacement sensors, which form a sliding fit with the displacement sensors, are fixed at the inner top end of the inner cylinder barrel; c cavities formed by the inner cylinder barrel, the piston and the piston rod are communicated with the a cavities of the inner cavity of the inner cylinder barrel through the C port of the inner cylinder barrel, and the a cavities are communicated through the A port at the bottom of the outer cylinder barrel; b cavities formed by the outer cylinder barrel, the piston and the piston rod are communicated through the B port of one end of the cavity with a rod of the outer cylinder barrel; t cavities formed by the outer cylinder barrel, the inner cylinder barrel and the piston are communicated through the T port of one end of the cavity without the rod of the outer cylinder barrel. The present invention is characterized in that the present invention is provided with a single output rod; the effective areas of the two action faces of the hydraulic cylinder are equal; the displacement sensors are arranged in the present invention.
Description
Technical field
The present invention relates to fluid pressure actuator, especially relate to a kind of single rod double-action symmetrical hydraulic cylinder of inbuilt displacement sensor.
Background technique
Oil hydraulic cylinder is the executive module that hydraulic pressure can be converted to straight line motion mechanical energy.Symmetrical hydraulic cylinder refers to that two acting surface areas of double-acting hydraulic cylinder equate, existing symmetrical hydraulic cylinder is generally two rods, the oil hydraulic cylinder of two rods is higher to spatial requirement, two active areas of asymmetric servo cylinder are then unequal, be asymmetrical cylinder, control performance be cannot say for sure to demonstrate,prove, and this makes their applications separately be very limited, and is not suitable for the use occasion that the space is limited, control performance is had relatively high expectations.
Summary of the invention
The advantage that the purpose of this invention is to provide symmetrical hydraulic cylinder and asymmetric servo cylinder well combines, and the useful area with single rod, oil hydraulic cylinder two acting surfaces equates, single rod double-action symmetrical hydraulic cylinder of a kind of inbuilt displacement sensor of inbuilt displacement sensor.
In order to achieve the above object, the technical solution used in the present invention is: comprise outer cylinder, inner cylinder tube, piston, piston rod, displacement transducer sliding sleeve, displacement transducer; Inner cylinder tube is housed in the outer cylinder, inner cylinder tube one end is connected in the bottom with outer cylinder, piston is connected with piston rod one end of hollow, be installed between outer cylinder and the inner cylinder tube, being slidingly matched for sealing between piston and outer cylinder, inner cylinder tube, the piston rod of hollow is enclosed within the inner cylinder tube outside, with another stomidium of outer cylinder being slidingly matched for sealing; At the piston rod of hollow and installation position, the inside displacement sensor of inner cylinder tube, an end of displacement transducer main body is fixed on the top of piston rod, the displacement transducer sliding sleeve that is slidingly matched with displacement transducer is fixed on the inner tip of inner cylinder tube; The piston rod cavity that inner cylinder tube, piston and piston rod form is communicated with the inner cylinder tube inner chamber through the logical hydraulic fluid port of inner cylinder tube of inner cylinder tube, and the inner cylinder tube inner chamber is communicated with the logical hydraulic fluid port of cylinder bottom of outer cylinder bottom; The rod chamber that is formed by outer cylinder, piston and piston rod is communicated with the logical hydraulic fluid port of the cylinder side of outer cylinder rod chamber one end; The rodless cavity that is formed by outer cylinder, inner cylinder tube and piston is communicated with the ventilating hole of outer cylinder rodless cavity one end; The area of---acting surface on acting surface and inner cylinder tube top on the piston---the piston rod acting surface that is positioned at the acting surface of piston rod one side on the piston equates.
The present invention compares with background technique, the useful effect that has is: the advantage of symmetrical hydraulic cylinder and asymmetric servo cylinder is well combined, proposed a kind of desirable Integrated Solution of compact structure, the useful area with single rod, oil hydraulic cylinder two acting surfaces equates, the characteristics of inbuilt displacement sensor.Can extensive use in hydraulic system, be particularly useful for the use occasion that the space is limited, control performance is had relatively high expectations.
Description of drawings
The present invention is further illustrated below in conjunction with drawings and Examples.
Accompanying drawing is a structural principle schematic representation of the present invention.
In the accompanying drawing: 1, outer cylinder, 2, inner cylinder tube, 3, piston, 4, piston rod, 5, the displacement transducer sliding sleeve, 6, displacement transducer.
Embodiment
As shown in drawings, the present invention includes: outer cylinder 1, inner cylinder tube 2, piston 3, piston rod 4, displacement transducer sliding sleeve 5, displacement transducer 6; Inner cylinder tube 2 is housed in the outer cylinder 1, inner cylinder tube 2 one ends and outer cylinder 1 are connected in the bottom, piston 3 is connected with piston rod 4 one ends of hollow, be installed between outer cylinder 1 and the inner cylinder tube 2, piston 3 and outer cylinder 1,2 being slidingly matched of inner cylinder tube for sealing, the piston rod 4 of hollow is enclosed within inner cylinder tube 2 outsides, with outer cylinder 1 another stomidium being slidingly matched for sealing; At the piston rod 4 of hollow and installation position, the inside displacement sensor 6 of inner cylinder tube 2, an end of displacement transducer 6 main bodys is fixed on the top of piston rod 4, the displacement transducer sliding sleeve 5 that is slidingly matched with displacement transducer 6 is fixed on the inner tip of inner cylinder tube 2; The piston rod cavity c that inner cylinder tube 2, piston 3 and piston rod 4 form is communicated with inner cylinder tube inner chamber a through the logical hydraulic fluid port C of inner cylinder tube of inner cylinder tube 2, and inner cylinder tube inner chamber a is communicated with the logical hydraulic fluid port A of cylinder bottom of outer cylinder 1 bottom; The rod chamber b that is formed by outer cylinder 1, piston 3 and piston rod 4 is communicated with the logical hydraulic fluid port B of the cylinder side of outer cylinder 1 rod chamber b one end; The rodless cavity t that is formed by outer cylinder 1, inner cylinder tube 2 and piston 3 is communicated with the ventilating hole T of outer cylinder 1 rodless cavity t one end; The area of---acting surface on acting surface I and inner cylinder tube 2 tops on the piston---the piston rod acting surface II that is positioned at the acting surface of piston rod 4 one sides on the piston 3 equates.
Working principle of the present invention is as follows:
Oil hydraulic cylinder has only an actuating rod, and promptly piston rod 4, and two acting surfaces of oil hydraulic cylinder are respectively face I and face II, and the area with this two acting surface during the design oil hydraulic cylinder mates, to realize the control performance of asymmetric cylinder.During work, the T mouth leads to atmosphere, and piston rod 4 stretches out in the process, the oil-feed of oil hydraulic cylinder A mouth, and hydraulic oil arrives the c chamber by a chamber, C mouth, and the useful effect face by the c chamber promotes piston rod and stretches out, and the B mouth is fuel-displaced, and the hydraulic oil in b chamber is discharged by the B mouth; In the piston rod 4 withdrawal processes, the oil-feed of oil hydraulic cylinder B mouth, hydraulic oil enters the b chamber, and by the useful effect face promotion piston rod withdrawal in b chamber, the A mouth is fuel-displaced, and the hydraulic oil in c chamber is discharged through C mouth, a chamber, A mouth.Oil hydraulic cylinder is built-in displacement transducer 6 is installed in the inside of the piston rod 4 and the inner cylinder tube 2 of hollow, compact structure, when hydraulic cylinder works, displacement transducer sliding sleeve 5 maintains static, and it is flexible that the main body of displacement transducer 6 is followed piston rod 4, the displacement signal of real-time accurate feedback piston rod 4.
Claims (1)
1, a kind of single rod double-action symmetrical hydraulic cylinder of inbuilt displacement sensor is characterized in that it comprises: outer cylinder (1), inner cylinder tube (2), piston (3), piston rod (4), displacement transducer sliding sleeve (5), displacement transducer (6); Inner cylinder tube (2) is housed in the outer cylinder (1), inner cylinder tube (2) one ends are connected in the bottom with outer cylinder (1), piston (3) is connected with piston rod (4) one ends of hollow, be installed between outer cylinder (1) and the inner cylinder tube (2), being slidingly matched for sealing between piston (3) and outer cylinder (1), inner cylinder tube (2), the piston rod of hollow (4) is enclosed within inner cylinder tube (2) outside, with another stomidium of outer cylinder (1) being slidingly matched for sealing; At the piston rod (4) of hollow and installation position, the inside displacement sensor (6) of inner cylinder tube (2), one end of displacement transducer (6) main body is fixed on the top of piston rod (4), and the displacement transducer sliding sleeve (5) that is slidingly matched with displacement transducer (6) is fixed on the inner tip of inner cylinder tube (2); The piston rod cavity (c) that inner cylinder tube (2), piston (3) and piston rod (4) form is communicated with inner cylinder tube inner chamber (a) through the logical hydraulic fluid port (C) of inner cylinder tube of inner cylinder tube (2), and inner cylinder tube inner chamber (a) is communicated with the logical hydraulic fluid port (A) of cylinder bottom of outer cylinder (1) bottom; The rod chamber (b) that is formed by outer cylinder (1), piston (3) and piston rod (4) is communicated with the logical hydraulic fluid port (B) of the cylinder side of outer cylinder (1) rod chamber (b) end; The rodless cavity (t) that is formed by outer cylinder (1), inner cylinder tube (2) and piston (3) is communicated with the ventilating hole (T) of outer cylinder (1) rodless cavity (t) end; The area of---acting surface on acting surface on the piston (I) and inner cylinder tube (2) top---the piston rod acting surface (II) that is positioned at the acting surface of piston rod (4) one sides on the piston (3) equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101089989A CN100337041C (en) | 2003-11-29 | 2003-11-29 | Single rod double acting symmetrical hydraulic cylinder with built-in displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101089989A CN100337041C (en) | 2003-11-29 | 2003-11-29 | Single rod double acting symmetrical hydraulic cylinder with built-in displacement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1546873A CN1546873A (en) | 2004-11-17 |
| CN100337041C true CN100337041C (en) | 2007-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101089989A Expired - Fee Related CN100337041C (en) | 2003-11-29 | 2003-11-29 | Single rod double acting symmetrical hydraulic cylinder with built-in displacement sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN100337041C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4733481B2 (en) * | 2005-09-09 | 2011-07-27 | カヤバ工業株式会社 | Cylinder device |
| CN103016447A (en) * | 2013-01-15 | 2013-04-03 | 无锡市三信传动控制有限公司 | Constant-pressure and constant-force hydraulic servo cylinder with single outlet rod |
| CN103939029B (en) * | 2014-04-08 | 2017-01-25 | 袁振宇 | Expansion coupling for screw pile machine |
| CN104632760B (en) * | 2015-02-28 | 2017-12-26 | 武汉武船机电设备有限责任公司 | A kind of hydraulic cylinder |
| CN104863924A (en) * | 2015-05-24 | 2015-08-26 | 南京理工大学 | Three-cavity power hydraulic cylinder |
| CN105114398A (en) * | 2015-09-21 | 2015-12-02 | 海门市油威力液压工业有限责任公司 | High-response electro-hydraulic shaft controller |
| CN106194890B (en) * | 2016-09-08 | 2018-11-06 | 北京精密机电控制设备研究所 | A kind of list rod double acting symmetrical hydraulic cylinder |
| CN106224320A (en) * | 2016-09-12 | 2016-12-14 | 天津大学 | Inbuilt displacement sensor integrated form list rod symmetrical hydraulic cylinder |
| CN106369004B (en) * | 2016-09-12 | 2018-03-13 | 天津大学 | Inbuilt displacement sensor integrated electric pump control list rod symmetrical hydraulic cylinder |
| CN110905885A (en) * | 2019-12-16 | 2020-03-24 | 广东志成电液科技有限公司 | Inverted hydraulic cylinder with built-in displacement sensor and hydraulic mechanism |
| CN113738738B (en) * | 2021-09-29 | 2023-06-23 | 西安航空学院 | Bidirectional rapid hydraulic cylinder |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877349A (en) * | 1974-05-15 | 1975-04-15 | Singer Co | Dual opposite motion extending and retracting ram fluid cylinders |
| US3949650A (en) * | 1975-01-16 | 1976-04-13 | Blatt Leland F | Equal area displacement hydraulic cylinder |
| US5318616A (en) * | 1991-10-09 | 1994-06-07 | Emhart Glass Machinery Investments Inc. | Plunger mechanism with a Hall sensor movement detection device for a glassware forming machine |
| US5522212A (en) * | 1994-12-21 | 1996-06-04 | Kubik; Philip A. | Rod equal displacement cylinder in a rapid transfer and feed system |
| EP0741232A1 (en) * | 1995-05-03 | 1996-11-06 | Richard Weiss | 3 chamber cylinder |
| JP2000346012A (en) * | 1999-06-04 | 2000-12-12 | Oil Drive Kogyo Kk | Hydraulic cylinder and hydraulic device using thereof |
| JP2001090714A (en) * | 1999-09-21 | 2001-04-03 | Taiyo Ltd | Position detector device for hydraulic cylinder |
| CN2700624Y (en) * | 2003-11-29 | 2005-05-18 | 浙江大学 | Single rod symmetrical hydraulic cylinder with built-in displacement sensor |
-
2003
- 2003-11-29 CN CNB2003101089989A patent/CN100337041C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877349A (en) * | 1974-05-15 | 1975-04-15 | Singer Co | Dual opposite motion extending and retracting ram fluid cylinders |
| US3949650A (en) * | 1975-01-16 | 1976-04-13 | Blatt Leland F | Equal area displacement hydraulic cylinder |
| US5318616A (en) * | 1991-10-09 | 1994-06-07 | Emhart Glass Machinery Investments Inc. | Plunger mechanism with a Hall sensor movement detection device for a glassware forming machine |
| US5522212A (en) * | 1994-12-21 | 1996-06-04 | Kubik; Philip A. | Rod equal displacement cylinder in a rapid transfer and feed system |
| EP0741232A1 (en) * | 1995-05-03 | 1996-11-06 | Richard Weiss | 3 chamber cylinder |
| JP2000346012A (en) * | 1999-06-04 | 2000-12-12 | Oil Drive Kogyo Kk | Hydraulic cylinder and hydraulic device using thereof |
| JP2001090714A (en) * | 1999-09-21 | 2001-04-03 | Taiyo Ltd | Position detector device for hydraulic cylinder |
| CN2700624Y (en) * | 2003-11-29 | 2005-05-18 | 浙江大学 | Single rod symmetrical hydraulic cylinder with built-in displacement sensor |
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| Publication number | Publication date |
|---|---|
| CN1546873A (en) | 2004-11-17 |
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Granted publication date: 20070912 Termination date: 20091229 |