CN1018083B - Cylinder-piston combination actuated by pressure medium - Google Patents
Cylinder-piston combination actuated by pressure mediumInfo
- Publication number
- CN1018083B CN1018083B CN 88104402 CN88104402A CN1018083B CN 1018083 B CN1018083 B CN 1018083B CN 88104402 CN88104402 CN 88104402 CN 88104402 A CN88104402 A CN 88104402A CN 1018083 B CN1018083 B CN 1018083B
- Authority
- CN
- China
- Prior art keywords
- piston
- pipe joint
- cylinder space
- space
- cylinder
- 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
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Abstract
The present invention relates to a cylinder-piston combination actuated by pressure media, which comprises a stretchy cylinder space and a piston assembly composed of two parts, wherein a piston rod of the first part of the piston assembly is in a cylindrical structure, and the first part is provided with a sealing ring; the cylinder space is provided with a pipe joint (27) through which the pressure media are led in a space (31); the second part is arranged in the first part and moves correspondingly to the first part. The combination comprises an auxiliary piston. The cylinder space is provided with a pipe joint (25) which enables the pressure media to be led in a space (29), and the cylinder space is provided with a pipe joint (26) which enables the pressure media to be led to an end surface (21) of the auxiliary piston.
Description
The present invention relates to cylinder body-piston combination by a kind of pressure medium actuating.This assemblying body has cylinder space and two-part piston assembly of an elongation, the arrangement of this piston assembly to make its cylinder space axially on out movement.
To the solution before such structure be, two pistons of piston assembly be placed on cylinder space inner mutually facing to the position on, stretched out by the two ends of the opposing side of cylinder body with its piston rod, the length of each piston rod approximates half of cylinder space length.So then the extreme length of this assemblying body approximates the twice of cylinder space.In many cases, can not satisfy the requirement aspect length change, especially when available space all the more so when the extreme length of cylinder space and other size are carried out various restriction.In this case, a kind of telescoping tube type structure of especially popular employing, this structure can the time be elongated to enough length and can be contracted to the form of enough deflations when resting in work.
The objective of the invention is to recommend a kind of cylinder body-piston combination, this assemblying body can be stretched to the 3 double-length degree that approximate cylinder space.The outside dimensions of this assemblying body is as broad as long basically with the corresponding size of the double-piston cylinder body of routine.This assemblying body has simple structure, and its control function is to adopt common control technique to carry out at an easy rate.
Present invention is described below in conjunction with accompanying drawing.Fig. 1 to Fig. 3 shows the vertical cut-away view of this assemblying body at each executive routine of different phase.
Fig. 1 shows that one is positioned at the cylinder body-piston combination of cylinder body with its piston rod, and this assemblying body is in its minimum length state that is contracted to.Cylinder space 1 be by one preferably the outer sleeve 1a of circular cross-section constituted.The first portion 3 of piston assembly contacts with the internal surface 2 of outer sleeve by an outer piston 4 that is subordinated to it.This outer piston 4 disposes seal ring 5 between this piston and internal surface 2.When this assemblying body was opened, the piston rod 6 of first portion 3 moved towards the right shown in Figure 1, was pushed against the seal ring 7 of cylinder space 1 right-hand end flange 1b until its piston.Piston rod 6 be one columnar structured, and its internal diameter is corresponding to the diameter of the internal piston 9 of the second portion 8 of piston assembly.In the closed position of this assemblying body, this second portion 8 is in the inside of first portion 3 substantially.The outer surface of internal piston 9 is provided with several axial grooves 10.When assemblying body was opened, the piston rod 13 of second portion 8 moved towards the left side shown in Figure 1, was pushed against the seal ring 12 of cylinder space 1 left-hand end flange 1c until its piston.This piston rod 13 can be as shown in now for example columnar, also can be the entity bar.
This assemblying body also comprises an auxiliary piston 14 that is provided with seal ring 15 between the internal surface 2 of this piston and cylinder space 1.This auxiliary piston 14 is provided with a central hole 16 so that the piston rod 13 of second portion 8 is moved with respect to auxiliary piston 14.In addition, this auxiliary piston has its size and is equivalent to the otch 17 of internal piston 9 and one or more extension 18 and shoulder 19 or its equivalents basically, preferably is positioned on end face 20 and 21.This auxiliary piston 14 also is provided with seal ring 23 so that the gap between this piston and the piston rod 13 is sealed.It externally on the connection part between piston 4 and the piston rod 6 shoulder 24.
The outer sleeve 1a of cylinder space 1 is provided with three connecting tube joints 25,26,27, by these pipe joints pressure medium is fed in the cylinder space 1 so that control the work of this assemblying body.
By first pipe joint 25, one pressure puts on the left side end face 20 of auxiliary piston, just when this assemblying body is in closed position shown in Figure 1, utilize extension 18 that medium is fed between end flange 1c and auxiliary piston 14 in the formed space 29.By second pipe joint 26 one pressure is put on internal surface by outer piston 4, on the part 30 of the end face 21 of auxiliary piston 14 and the cylinder space that outer surface limited of second portion 8.By the 3rd pipe joint 27 one pressure is put on the cylinder space part 31 that outer surface limited by first portion 3.The effect of transmitting pressure medium is also played in end 28 and the space 32 between the internal piston 9 at piston rod 6.The position arrangement that is used for each pipe joint of pressure medium is like this, and promptly when this assemblying body carried out a work cycle, each pipe joint was in turn to work.
Referring to each accompanying drawing, the working condition of this assemblying body is as follows:
When making pressure medium feed space 29 by first pipe joint 25, assemblying body will be from closed position shown in Figure 1, promptly this internal piston is the inside that is in the piston rod 6 of cylinder space right-hand end, and outer piston 4 and auxiliary piston all are spaced from each other with shoulder 19 determined distances at the left-hand end of cylinder space, are moved into position shown in Figure 2.Auxiliary piston 14 is pushed first portion 3 right-hand end of cylinder space to, like this so that piston rod 6 is moved until shoulder 24 compresses facing to end flange 1b and space 31 is in minimum state towards the outside of cylinder space 1.In proper this motion, pipe joint 27 and have pipe joint 26 and be opened so that pressure medium is outwards flowed out by space 31.In this motion, space 30 has also dwindled, and the hole 10 of flowing through of pressure medium wherein enters space 32.In this motion at the end, internal piston 9 be in the otch 17 in auxiliary piston 14 as shown in Figure 2, therefore, space 30 and 32 has merged and pipe joint 26 is in the right of auxiliary piston end face 21, thereby can be connected with space 30 and 32.Fig. 4 is the cut-away view of expression by the cross section IV-IV of this assemblying body.In addition, pipe joint 27 is connected with space 31.
When making pressure medium through pipe joint 26 inflow spaces 30 and 32, because pressure acts on two formed end faces 21 of piston simultaneously, on 34, the assemblying body of inner carrier 9 and auxiliary piston 14 just moves towards left position shown in Figure 3, and piston rod 13 motion left simultaneously arrives its ragged edge position.In this motion, pipe joint 25 must be opened so that the pressure medium in the space 29 that is dwindling is spilt out.At this moment this assemblying body is elongated to its extreme length, is substantially equal to 3 times of cylinder space length.Piston rod 6 and 13 is pushed continuously to the outside of cylinder space by means of auxiliary piston 14.
In the time will making assemblying body be in position shown in Figure 1 again, at first to make pressure medium by in pipe joint 25 inflow spaces 29, meanwhile pipe joint 27 stays open.So this assemblying body moves to position shown in Figure 2.Then, make pressure medium through in pipe joint 27 inflow spaces 31, meanwhile pipe joint 25 stays open and pipe joint 26 cuts out, and reaches position shown in Figure 1.Now internal piston 9 is remained on the origin-location, independent space 30 and 32 is all restored.
A tube-carrier joint 35 is located on the cylinder body overcoat 1a, and when auxiliary piston 14 is in the apical position on the left side (Fig. 1), this tube-carrier joint is positioned at the right of end face 21.Like this when auxiliary piston 14 arrives its left side apical position thereby additional pipe joint 35 is connected with space 30, be stored between auxiliary piston 14 and the first portion 3 and also ought move from right to left in the distance between them is increased that part be equivalent to the pressure medium of the content volume of piston rod 13, just emit through additional pipe joint 35.This system also comprises a pressure cylinder 36 that is activated by pressure medium, and this cylinder body can be worked as piston rod 6 and piston rod 13 is locked on its interior location when being in its interior location.
Obviously, the present invention can be implemented by alternate manner except mode described above.Otch 17 on the auxiliary piston 14 can be set in certain embodiments.The shoulder design proposal that is used to reach the minimum value of pressure space can realize by different modes.Pressure medium is hydraulic oil preferably.Be obviously can realize making the pass closed procedure of this assemblying body with for example described in compare be with opposite in sequence.Described order is the application that is particularly suitable for having the flexible principle of sleeve.The control of the work of each pipe joint can for example adopt the solenoid valve in the pipeline that is connected to these pipe joints to realize.
Claims (6)
1, a kind of cylinder body-piston combination by the pressure medium actuating, comprise that the cylinder space (1) of an elongation and one can be at two-part piston assemblys (3 of axially going up out movement of cylinder space (1), 8), the piston rod (6) of the first portion of this piston assembly (3) has columnar structured, this first portion (3) disposes a seal ring between the internal surface (2) of piston (4) and cylinder space (1), cylinder space (1) is provided with a pipe joint (27), can be by this pipe joint with the space that outer surface limited (31) of pressure medium feeding by cylinder space (1) and first portion (3), the size design of second portion (8) will make it can be installed in the inside of first portion (3) and it can be moved with respect to first portion (3), it is characterized in that: the auxiliary piston (14) that this assemblying body comprises that a piston rod round second portion (13) is installed with and seals with respect to the internal surface (2) of cylinder space (1); This cylinder space is provided with a pipe joint (25), and this pipe joint can make pressure medium feed by cylinder space (1) with in the space (29) that the auxiliary piston end face (20) of first portion is limited dorsad; This cylinder space (1) is provided with another pipe joint (26), and the piston (9) that this pipe joint can be worked as second portion (8) and auxiliary piston (14) be when being meshed, and pressure medium is led to auxiliary piston end face (21) towards first portion (3).
2, assemblying body as claimed in claim 1 is characterized in that: first portion (3) is provided with a shoulder (24).
3, assemblying body as claimed in claim 1 is characterized in that: piston (9) is provided with one at least in the hole of axial this piston of break-through and/or have a groove (10) at least on its shell.
4, assemblying body as claimed in claim 1 is characterized in that: this auxiliary piston is provided with an otch that is used for piston (9).
5, assemblying body as claimed in claim 1 is characterized in that: this auxiliary piston (14) is provided with preferably by the set a distance piece (18,19) that stretches out on its end face (20,21).
6, assemblying body as claimed in claim 1 is characterized in that: this cylinder space (1) is provided with an additional pipe joint (35), and this pipe joint is positioned at opposite, space (29) one side with respect to auxiliary piston (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104402 CN1018083B (en) | 1988-07-13 | 1988-07-13 | Cylinder-piston combination actuated by pressure medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104402 CN1018083B (en) | 1988-07-13 | 1988-07-13 | Cylinder-piston combination actuated by pressure medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039289A CN1039289A (en) | 1990-01-31 |
| CN1018083B true CN1018083B (en) | 1992-09-02 |
Family
ID=4832999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88104402 Expired CN1018083B (en) | 1988-07-13 | 1988-07-13 | Cylinder-piston combination actuated by pressure medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1018083B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA017689B1 (en) * | 2008-06-09 | 2013-02-28 | Оао "Санкт-Петербургское Морское Бюро Машиностроения "Малахит" | Combined telescopic double-acting hydraulic cylinder for substantial strokes |
| JP5134447B2 (en) * | 2008-06-10 | 2013-01-30 | 国立大学法人九州工業大学 | Piston cylinder type high pressure generator |
| CN104314918B (en) * | 2014-06-18 | 2016-08-17 | 国家电网公司 | Hydraulic actuating mechanism used for high-voltage switch and hydraulic working cylinder thereof |
-
1988
- 1988-07-13 CN CN 88104402 patent/CN1018083B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1039289A (en) | 1990-01-31 |
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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 | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| 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 |