CN109441908A - A kind of fluid acting device - Google Patents
A kind of fluid acting device Download PDFInfo
- Publication number
- CN109441908A CN109441908A CN201811583675.8A CN201811583675A CN109441908A CN 109441908 A CN109441908 A CN 109441908A CN 201811583675 A CN201811583675 A CN 201811583675A CN 109441908 A CN109441908 A CN 109441908A
- Authority
- CN
- China
- Prior art keywords
- piston
- plunger shaft
- fluid acting
- acting device
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of fluid acting devices, including piston cavity shell, piston cavity shell one end is fixed with plunger shaft cover board by connector, the plunger shaft enclosure interior is threaded with piston rod at center, the junction of the piston rod and plunger shaft cover board is embedded with sealing ring, the upper cover of piston rod is connected to several pistons, and the piston is sequentially connected and is formed by plunger shaft disk and piston plate head and the tail.The present invention fluid acting device can meet requirement under the premise of not increasing even reduction piston diameter by increasing the quantity of piston using pressure and in the conditional situation of piston diameter.
Description
Technical field
The invention belongs to fluid acting device technical field, specially a kind of fluid acting device.
Background technique
Existing high limit relay, quick response shut-off valve, pneumatically or hydraulically executive device generally use piston (or
Similar to the diaphragm of piston) scheme, piston motion is realized using the pressure difference of piston two sides to drive execution structure to do, or
The transmitting of power is realized using the pressure difference, typically pneumatically or hydraulically executive device structure generallys use single layer piston scheme, the dress
The pressure for setting transmitting is equal to the pressure difference of piston two sides multiplied by piston area.
Prior art, the transmitting of power or doing for mechanism are nearly all using single-piston scheme, and disadvantage is main
It is:
1, since the size of active force and piston area are directly proportional, when one timing of piston two sides pressure difference, needing piston fast
Speed movement or the occasion for needing to transmit big pressure need bigger piston area to increase whole to increase cylinder bore
The scale of a system.
2, since the size of active force and piston area are directly proportional, when have space limit prevent piston area from doing too
When big, higher piston two sides pressure difference is needed.And under practical application, the pressure of plunger shaft is usually limited, because relating to
And supplied to gas source, material structural strength, the factors such as construction weight and safety restrict.
Summary of the invention
It is an object of the invention to: existing fluid acting device is in the transmitting of power or doing using single work for mechanism
Plug scheme, in the case where limited using pressure, actuator force could be increased or accelerate to execute by needing to increase piston area
Device does speed.In the limited situation of structure space, need to increase pistons work pressure difference could increase actuator force or
Accelerate actuator and does speed.If being just more difficult to combine under structure space and using all limited situation of pressure
Both of these problems, the present invention will provide a kind of fluid acting device and solve the problems, such as two above.
The technical solution adopted by the invention is as follows:
A kind of fluid acting device, including piston cavity shell, piston cavity shell one end are fixed with work by connector
Chamber lid plate is filled in, is threaded with piston rod, the company of the piston rod and plunger shaft cover board at plunger shaft enclosure interior center
The place of connecing is embedded with sealing ring, and the upper cover of piston rod is connected to several pistons, and the piston is by plunger shaft disk and piston plate head and the tail
It is sequentially connected composition.
Wherein, it is provided with the first sealing ring on the plunger shaft disk, the first sealing ring of cooperation is offered on the piston plate
The limiting slot used.
Wherein, the piston plate is provided with multiple altogether, and multiple piston plates head and the tail are sequentially connected, and multiple piston plates connect
The place of connecing is connected with the second sealing ring.
Wherein, the piston rod threaded one end is connected with hold-doun nut.
Wherein, external screw thread is arranged close to one end of hold-doun nut in the piston rod.
Wherein, the plunger shaft disk is provided with multiple altogether, and multiple plunger shaft disks are in same horizontal line, and adjacent
Spacing between two plunger shaft disks is equal
Wherein, the junction of the piston cavity shell and plunger shaft cover board is embedded with gasket.
Wherein, the connector is that screw connection can also be using the directly types of attachment such as welding.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, in the present invention, which realizes the modularization of piston, and number of pistons increases and decreases flexibly
It is adjustable, it is only necessary to increase or reduce the length of piston rod and the depth of piston cavity shell；
2, in the present invention, the fluid acting device, sealing structure is reliable, and piston plate and plunger shaft are all axisymmetric parts,
Processing and assembly are all very simple；
3, in the present invention, the fluid acting device is using pressure and in the conditional situation of piston diameter, Ke Yitong
The quantity for increasing piston is crossed, under the premise of not increasing even reduction piston diameter, meets requirement.
4, in the present invention, the piston element by existing actuator which can be convenient carries out more pistons
It improves, more rapidly does or provide bigger active force to realize.
Detailed description of the invention
Fig. 1 is structure schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of piston cavity shell in the present invention；
Fig. 3 is the structural schematic diagram of piston rod in the present invention.
Marked in the figure: 1, piston cavity shell；2, connector；3, plunger shaft cover board；4, sealing ring；5, piston rod；6, fixed
Nut；7, piston；8, plunger shaft disk；9, the first sealing ring；10, limiting slot；11, the second sealing ring；12, piston plate.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Referring to Fig.1-3, a kind of fluid acting device, including piston cavity shell 1,1 one end of piston cavity shell pass through connector 2
It is fixed with plunger shaft cover board 3, piston rod 5, piston rod 5 and plunger shaft cover board 3 are threaded at 1 inside center of piston cavity shell
Junction be embedded with sealing ring 4, be socketed with several pistons 7 on piston rod 5, piston 7 is first by plunger shaft disk 8 and piston plate 12
Tail is sequentially connected composition.
It is provided with the first sealing ring 9 on plunger shaft disk 8, the limit that the first sealing ring 9 of cooperation uses is offered on piston plate 12
Position slot 10, piston plate 12 are provided with multiple altogether, and 12 head and the tail of multiple piston plates are sequentially connected, and 12 junction of multiple piston plates
It is connected with the second sealing ring 11,5 one end of piston rod is connected with hold-doun nut 6, and piston rod 5 is arranged close to one end of hold-doun nut 6
External screw thread, plunger shaft disk 8 are provided with multiple altogether, and multiple plunger shaft disks 8 are in same horizontal line, and two neighboring piston
Spacing between chamber disk 8 is equal, and the junction of piston cavity shell 1 and plunger shaft cover board 3 is embedded with gasket, and connector 2 is
Screw connection can also not have to screw and directly weld piston cavity shell 1 and plunger shaft cover board 3, the increase of 7 quantity of piston and subtract
It is few flexibly adjustable, it is only necessary to increase or reduce the length of piston rod 5 and the depth of piston cavity shell 1.
Working principle: in use, mutually connecting and fixing piston plate 12 and plunger shaft disk 8 to form 7 structure of piston first, so
Piston 7 is socketed on piston rod 5 afterwards, then by hold-doun nut 6 by being screwed on piston rod 5, clamping piston 7, this
When piston rod 5 is being fixed at 1 inside center of piston cavity shell, then by first piston chamber lid plate 3 and second piston chamber lid
Sealing ring 4 is fixed on piston cavity shell 1 by connector 2, and the fluid acting device can use at this time.
It is can also be applied in high limit relay, quick response shut-off valve etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of fluid acting device, including piston cavity shell (1), it is characterised in that: described piston cavity shell (1) one end passes through
Connector (2) is fixed with plunger shaft cover board (3), is threaded with piston rod (5) at piston cavity shell (1) inside center,
The junction of the piston rod (5) and plunger shaft cover board (3) is embedded with sealing ring (4), is socketed on the piston rod (5) several
A piston (7), the piston (7) are sequentially connected are formed from beginning to end by plunger shaft disk (8) and piston plate (12).
2. a kind of fluid acting device as described in claim 1, it is characterised in that: be provided with the on the plunger shaft disk (8)
One sealing ring (9) offers the limiting slot (10) that cooperation the first sealing ring (9) uses on the piston plate (12).
3. a kind of fluid acting device as described in claim 1, it is characterised in that: the piston plate (12) is provided with more altogether
It is a, and multiple piston plates (12) are sequentially connected from beginning to end, and multiple piston plates (12) junction is connected with the second sealing ring (11).
4. a kind of fluid acting device as described in claim 1, it is characterised in that: piston rod (5) the threaded one end connection
There are hold-doun nut (6).
5. a kind of fluid acting device as described in claim 1, it is characterised in that: the piston rod (5) is close to hold-doun nut
(6) external screw thread is arranged in one end.
6. a kind of fluid acting device as described in claim 1, it is characterised in that: the plunger shaft disk (8) is provided with more altogether
It is a, and multiple plunger shaft disks (8) are in same horizontal line, and the spacing between two neighboring plunger shaft disk (8) is equal.
7. a kind of fluid acting device as described in claim 1, it is characterised in that: the piston cavity shell (1) and plunger shaft
The junction of cover board (3) is embedded with gasket.
8. a kind of fluid acting device as described in claim 1, it is characterised in that: the connector (2) is screw connection,
It can be using the directly types of attachment such as welding.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583675.8A CN109441908A (en) | 2018-12-24 | 2018-12-24 | A kind of fluid acting device |
| CN201920923752.3U CN210484237U (en) | 2018-12-24 | 2019-06-19 | Fluid acting device |
| CN201910530797.9A CN111350714A (en) | 2018-12-24 | 2019-06-19 | Fluid acting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583675.8A CN109441908A (en) | 2018-12-24 | 2018-12-24 | A kind of fluid acting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109441908A true CN109441908A (en) | 2019-03-08 |
Family
ID=65537809
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811583675.8A Withdrawn CN109441908A (en) | 2018-12-24 | 2018-12-24 | A kind of fluid acting device |
| CN201920923752.3U Active CN210484237U (en) | 2018-12-24 | 2019-06-19 | Fluid acting device |
| CN201910530797.9A Pending CN111350714A (en) | 2018-12-24 | 2019-06-19 | Fluid acting device |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920923752.3U Active CN210484237U (en) | 2018-12-24 | 2019-06-19 | Fluid acting device |
| CN201910530797.9A Pending CN111350714A (en) | 2018-12-24 | 2019-06-19 | Fluid acting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN109441908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576230A (en) * | 2022-03-01 | 2022-06-03 | 安徽建筑大学 | Hydraulic loading device |
-
2018
- 2018-12-24 CN CN201811583675.8A patent/CN109441908A/en not_active Withdrawn
-
2019
- 2019-06-19 CN CN201920923752.3U patent/CN210484237U/en active Active
- 2019-06-19 CN CN201910530797.9A patent/CN111350714A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576230A (en) * | 2022-03-01 | 2022-06-03 | 安徽建筑大学 | Hydraulic loading device |
| CN114576230B (en) * | 2022-03-01 | 2022-08-26 | 安徽建筑大学 | Hydraulic loading device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111350714A (en) | 2020-06-30 |
| CN210484237U (en) | 2020-05-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190308 |