CN2700624Y - Single rod symmetrical hydraulic cylinder with built-in displacement sensor - Google Patents
Single rod symmetrical hydraulic cylinder with built-in displacement sensor Download PDFInfo
- Publication number
- CN2700624Y CN2700624Y CN 200320108537 CN200320108537U CN2700624Y CN 2700624 Y CN2700624 Y CN 2700624Y CN 200320108537 CN200320108537 CN 200320108537 CN 200320108537 U CN200320108537 U CN 200320108537U CN 2700624 Y CN2700624 Y CN 2700624Y
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- CN
- China
- Prior art keywords
- cylinder barrel
- inner cylinder
- piston
- outer cylinder
- piston rod
- 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.)
- Expired - Lifetime
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 37
- 238000007789 sealing Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a single rod symmetrical hydraulic cylinder with a built-in displacement sensor. One end of an inner cylinder barrel is connected with an outer cylinder barrel, and a piston installed between the outer cylinder barrel and the inner cylinder barrel is connected with one end of a hollow piston rod. The piston forms a sliding fit with the outer cylinder barrel and the inner cylinder barrel, and the piston rod sheathed outside the inner cylinder barrel forms a sliding fit with the other end hole of the outer cylinder barrel. The displacement sensor is installed between the piston rod and the inner cylinder barrel, and one end of the main body of the displacement sensor is fixed on the top end of the piston rod. A slide sleeve of the displacement sensor forms a sliding fit with the displacement sensor is fixed on the inner top end of the inner cylinder barrel. A c cavity formed from the inner cylinder barrel, the piston and the piston rod is communicated with an a cavity of an inner cavity of the inner cylinder barrel via a C opening of the inner cylinder barrel; the a cavity is communicated with an A opening through the bottom of the outer cylinder barrel; a b cavity formed from the outer cylinder barrel, the piston and the piston rod is communicated with a B opening through one end of the outer cylinder barrel with a rod cavity; a t cavity formed from the outer cylinder barrel, the inner cylinder barrel and the piston is communicated with a T opening through one end of the outer cylinder barrel without the rod cavity. The utility model has the characteristics of single rod, equal useful areas of two acting surfaces of the hydraulic cylinder, and built-in displacement sensor.
Description
Affiliated technical field
The utility model relates to fluid pressure actuator, especially relates to the built-in single rod symmetrical hydraulic cylinder of a kind of displacement transducer.
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 utility model provides symmetrical hydraulic cylinder and asymmetric servo cylinder well combines, and the useful area with single rod, oil hydraulic cylinder two acting surfaces equates, the built-in single rod symmetrical hydraulic cylinder of a kind of displacement transducer of inbuilt displacement sensor.
In order to achieve the above object, the technical solution adopted in the utility model 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, the inner cylinder tube 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 c chamber that inner cylinder tube, piston and piston rod form is communicated with the inner chamber a chamber of inner cylinder tube through the C mouth of inner cylinder tube, and a chamber is communicated with the A mouth of outer cylinder bottom; The b chamber that is formed by outer cylinder, piston and piston rod is communicated with the B mouth of outer cylinder rod chamber one end; The t chamber that is formed by outer cylinder, inner cylinder tube and piston is communicated with the T mouth of outer cylinder rodless cavity one end.
The utility model is compared 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 built-in characteristics of displacement transducer.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
Below in conjunction with drawings and Examples the utility model is further described.
Accompanying drawing is a structural principle schematic representation of the present utility model.
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 utility model 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 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 c chamber that inner cylinder tube 2, piston 3 and piston rod 4 form is communicated with the inner chamber a chamber of inner cylinder tube 2 through the C mouth of inner cylinder tube 2, and a chamber is communicated with the A mouth of outer cylinder 1 bottom; The b chamber that is formed by outer cylinder 1, piston 3 and piston rod 4 is communicated with the B mouth of outer cylinder 1 rod chamber one end; The t chamber that is formed by outer cylinder 1, inner cylinder tube 2 and piston 3 is communicated with the T mouth of outer cylinder 1 rodless cavity one end.
Working principle of the present utility model 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, the built-in single rod symmetrical hydraulic cylinder of a kind of displacement transducer 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 c chamber that inner cylinder tube (2), piston (3) and piston rod (4) form is communicated with the inner chamber a chamber of inner cylinder tube (2) through the C mouth of inner cylinder tube (2), and a chamber is communicated with the A mouth of outer cylinder (1) bottom; The b chamber that is formed by outer cylinder (1), piston (3) and piston rod (4) is communicated with the B mouth of outer cylinder (1) rod chamber one end; The t chamber that is formed by outer cylinder (1), inner cylinder tube (2) and piston (3) is communicated with the T mouth of outer cylinder (1) rodless cavity one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108537 CN2700624Y (en) | 2003-11-29 | 2003-11-29 | Single rod symmetrical hydraulic cylinder with built-in displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108537 CN2700624Y (en) | 2003-11-29 | 2003-11-29 | Single rod symmetrical hydraulic cylinder with built-in displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2700624Y true CN2700624Y (en) | 2005-05-18 |
Family
ID=34761978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320108537 Expired - Lifetime CN2700624Y (en) | 2003-11-29 | 2003-11-29 | Single rod symmetrical hydraulic cylinder with built-in displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2700624Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337041C (en) * | 2003-11-29 | 2007-09-12 | 浙江大学 | Single rod double acting symmetrical hydraulic cylinder with built-in displacement sensor |
| CN102788061A (en) * | 2012-08-30 | 2012-11-21 | 中国地质科学院勘探技术研究所 | Low-flow fast movable cylinder |
| CN106939910A (en) * | 2017-04-22 | 2017-07-11 | 新乡市新倍增自动化设备有限公司 | A kind of Electrical hydrostatic actuator single rod symmetrical hydraulic cylinder at a high speed |
| CN108331799A (en) * | 2018-04-12 | 2018-07-27 | 辽宁工程技术大学 | A kind of machine feedback formula single pole symmetrical figure fluid cylinder |
| CN109723698A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | It is a kind of with emergency function can bidirectional buffering single rod symmetrical hydraulic cylinder |
-
2003
- 2003-11-29 CN CN 200320108537 patent/CN2700624Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337041C (en) * | 2003-11-29 | 2007-09-12 | 浙江大学 | Single rod double acting symmetrical hydraulic cylinder with built-in displacement sensor |
| CN102788061A (en) * | 2012-08-30 | 2012-11-21 | 中国地质科学院勘探技术研究所 | Low-flow fast movable cylinder |
| CN106939910A (en) * | 2017-04-22 | 2017-07-11 | 新乡市新倍增自动化设备有限公司 | A kind of Electrical hydrostatic actuator single rod symmetrical hydraulic cylinder at a high speed |
| CN109723698A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | It is a kind of with emergency function can bidirectional buffering single rod symmetrical hydraulic cylinder |
| CN109723698B (en) * | 2017-10-27 | 2020-10-23 | 北京精密机电控制设备研究所 | Bidirectional-buffering single-rod symmetrical hydraulic cylinder with emergency function |
| CN108331799A (en) * | 2018-04-12 | 2018-07-27 | 辽宁工程技术大学 | A kind of machine feedback formula single pole symmetrical figure fluid cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20031129 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |