CN113983029A - Two-stage oil cylinder - Google Patents
Two-stage oil cylinder Download PDFInfo
- Publication number
- CN113983029A CN113983029A CN202111441830.4A CN202111441830A CN113983029A CN 113983029 A CN113983029 A CN 113983029A CN 202111441830 A CN202111441830 A CN 202111441830A CN 113983029 A CN113983029 A CN 113983029A
- Authority
- CN
- China
- Prior art keywords
- stage
- cylinder body
- outer cylinder
- plunger
- return port
- 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.)
- Pending
Links
Images
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
-
- 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
- F15B15/1428—Cylinders
-
- 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
- F15B15/1471—Guiding means other than in the end cap
-
- 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
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
A two-stage oil cylinder solves the problems that existing multi-stage telescopic cylinders only can extend out and retract all stages of pistons step by step, independent action requirements of all stages of pistons cannot be met, and applicability is poor. Including the outer cylinder body that one end was provided with outer cylinder bottom, its characterized in that: the opening at the other end of the outer cylinder body is movably inserted with a primary inner cylinder body, one end of the primary inner cylinder body, which is positioned inside the outer cylinder body, is provided with an inner cylinder bottom, and the opening at the other end of the primary inner cylinder body is movably inserted with a secondary plunger; one end of the second-stage plunger, which is positioned in the first-stage inner cylinder body, is provided with a piston, and the other end of the second-stage plunger is provided with a second-stage liquid inlet and return port; the outer cylinder body is provided with a primary liquid inlet and return port. The oil cylinder has the advantages of reasonable design and compact structure, can realize independent extension or retraction of all stages of pistons of the oil cylinder, can meet the requirements of various different use working conditions, and has wide application range.
Description
Technical Field
The invention belongs to the technical field of multi-stage telescopic cylinders, and particularly relates to a two-stage oil cylinder which can realize independent extension or retraction of pistons at all stages of the oil cylinder, can meet the requirements of various use working conditions, and is wide in application range.
Background
The two-stage oil cylinder is formed by sleeving a two-stage cylinder body and a piston, and during work, oil firstly pushes a first-stage piston with a large effective action area to move, and then pushes a second-stage piston with a small effective action area to move, so that a piston rod is driven to sequentially extend or retract step by step. The two-stage oil cylinder and the common oil cylinder are the same in overall dimension, the working stroke of the two-stage oil cylinder is far longer than that of the common oil cylinder, and the two-stage oil cylinder is suitable for working conditions that the installation space is limited and the requirement on the telescopic stroke is large. Therefore, the method is widely applied to various occasions such as industrial production and the like.
The two-stage oil cylinder with the existing structure can only extend and retract two-stage pistons step by step, however, some working conditions often occur in actual production and use, only one-stage piston alone acts or only two-stage piston alone acts, and the two-stage pistons act simultaneously under special conditions. Because the existing two-stage oil cylinder cannot meet the requirement of independent action of each stage of piston, the structure of the two-stage oil cylinder in the prior art needs to be improved.
Disclosure of Invention
The invention aims at the problems and provides the secondary oil cylinder which can realize independent extension or retraction of each stage of piston of the oil cylinder, can meet the requirements of various use working conditions and has wide application range.
The technical scheme adopted by the invention is as follows: the two-stage oil cylinder comprises an outer cylinder body and is characterized in that: one end of the outer cylinder body is provided with an outer cylinder bottom, the opening at the other end of the outer cylinder body is movably inserted with a primary inner cylinder body, one end of the primary inner cylinder body, which is positioned in the outer cylinder body, is provided with an inner cylinder bottom, and the opening at the other end of the primary inner cylinder body is movably inserted with a secondary movable column; and a piston is arranged at one end of the second-stage movable column positioned in the first-stage inner cylinder body, a second-stage liquid inlet and return port is arranged at the other end of the second-stage movable column, and a first-stage liquid inlet and return port is arranged on the outer cylinder body.
The outer cylinder body is composed of an outer cylinder barrel, and the inner cavity of the outer cylinder barrel is divided into a first-stage rodless cavity and a first-stage rod cavity which are mutually independent by the inner cylinder bottom at the inner end of the first-stage inner cylinder body; and the primary rodless cavity is communicated with a primary rodless cavity liquid inlet and return port on the outer cylinder body, and the primary rod cavity is connected with a primary rod cavity liquid inlet and return port on the outer cylinder body. The first-stage inner cylinder body is extended by high-pressure oil liquid entering the first-stage rodless cavity of the outer cylinder body through the first-stage rodless cavity liquid inlet and return port, and the first-stage inner cylinder body is retracted by the high-pressure oil liquid entering the first-stage rodless cavity of the outer cylinder body from the first-stage rodless cavity liquid inlet and return port.
The primary rodless cavity liquid inlet and return port is arranged on the side part of the outer cylinder bottom of the outer cylinder body. So as to facilitate the connection of oil pipelines and improve the overall structural strength of the outer cylinder body.
And an outer cylinder guide sleeve is arranged at the opening end of the outer cylinder body. So as to guide the extension and retraction of the primary inner cylinder body while sealing the inner cavity of the outer cylinder body.
The first-stage rod cavity liquid inlet and return port is arranged on the side part of the outer cylinder guide sleeve of the outer cylinder body. So as to improve the structural strength of the whole outer cylinder body and facilitate the connection of oil pipelines.
The first-stage inner cylinder body is composed of an inner cylinder barrel body, and an inner cavity of the inner cylinder barrel body is divided into a second-stage rodless cavity and a second-stage rod cavity which are independent from each other by a piston at the inner end of the second-stage plunger; the second-stage rodless cavity is communicated with a second-stage rodless cavity liquid inlet and return port on the second-stage plunger, and the second-stage rod cavity is communicated with a second-stage rod cavity liquid inlet and return port on the second-stage plunger. The high-pressure oil liquid entering the secondary rodless cavity of the primary inner cylinder body from the liquid inlet and return port of the secondary rodless cavity is utilized to extend the secondary plunger, and the secondary plunger is withdrawn by the high-pressure oil liquid entering the secondary rod cavity of the primary inner cylinder body from the liquid inlet and return port of the secondary rod cavity.
The second-stage plunger is composed of a plunger cylinder body, and the plunger cylinder body is positioned at one end outside the opening end of the first-stage inner cylinder body and is respectively provided with a second-stage rodless cavity liquid inlet and return port and a second-stage rod cavity liquid inlet and return port; the second-stage rodless cavity liquid inlet and return port is connected with a second-stage extending column liquid channel arranged in the plunger column body, and the second-stage rod cavity liquid inlet and return port is connected with a second-stage column collecting liquid channel arranged in the plunger column body. So that the oil pipeline is conveniently connected with the end part of the secondary plunger, the compact structure degree of the secondary plunger is increased, and the use reliability is ensured.
The end hole setting that the second grade of second grade plunger stretched the post liquid way is in the inner side of piston, the tip that the post liquid was drawn to the second grade links to each other with the second grade side hole of drawing back that sets up on the plunger cylinder lateral wall, just the post side hole is drawn back to the second grade is located the outer terminal side of piston, towards the one side of extending direction. The piston is ejected or pressed back by using high-pressure oil flowing out through the end hole of the secondary column extending liquid channel and the side hole of the secondary column collecting respectively, and then the secondary movable column is extended or collected.
And an inner cylinder guide sleeve is arranged at the opening end of the first-stage inner cylinder body. So as to seal the inner cavity of the first-stage inner cylinder body and effectively guide the extension of the second-stage movable column.
The invention has the beneficial effects that: because the invention adopts the outer cylinder body with one end provided with the outer cylinder bottom, the opening at the other end of the outer cylinder body is movably inserted with the first-stage inner cylinder body, one end of the first-stage inner cylinder body positioned in the outer cylinder body is provided with the inner cylinder bottom, and the opening at the other end of the first-stage inner cylinder body is movably inserted with the second-stage movable post; the one end that the second grade traveller is located one-level internal cylinder body inside is provided with the piston, the other end of second grade traveller is provided with the second grade and advances back the liquid mouth, set up the structural style that one upgrades back the liquid mouth on the outer cylinder body, so its reasonable in design, compact structure, because the inner chamber of outer cylinder body and the inner chamber of one-level internal cylinder body are each other not UNICOM, thereby can adopt independent fluid pipeline to control respectively, and then realize independent stretching out or retracting of cylinder body and second grade traveller in the hydro-cylinder one-level, can satisfy the demand of multiple different use condition, the application scope of hydro-cylinder is wide.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of a structure of the external cylinder body of fig. 1.
Fig. 3 is a schematic view showing a structure of the one-stage internal cylinder block of fig. 1.
FIG. 4 is a schematic diagram of a secondary plunger of FIG. 1.
FIG. 5 is a schematic view showing a state of use in which the primary inner cylinder of the present invention is extended alone (the secondary plunger is not extended).
FIG. 6 is a schematic view showing a state of use in which the secondary plunger of the present invention is extended alone (the primary internal cylinder is not extended).
Fig. 7 is a schematic view showing a state of use in which the primary internal cylinder and the secondary plunger of the present invention are simultaneously extended.
The sequence numbers in the figures illustrate: the device comprises an outer cylinder body 1, an outer cylinder bottom 2, a first-stage rodless cavity liquid inlet and return port 3, an outer cylinder guide sleeve 4, a first-stage rod cavity liquid inlet and return port 5, a first-stage inner cylinder body 6, an inner cylinder guide sleeve 7, a second-stage plunger 8, a second-stage rodless cavity liquid inlet and return port 9, a second-stage rod cavity liquid inlet and return port 10, an outer cylinder barrel 11, an inner cylinder telescopic socket 12, a first-stage rodless cavity 13, a first-stage rod cavity 14, an inner cylinder bottom 15, an inner cylinder barrel 16, a plunger telescopic socket 17, a second-stage rodless cavity 18, a second-stage rod cavity 19, a piston 20, a plunger barrel 21, a second-stage extended column liquid channel 22, a second-stage retracted column liquid channel 23, a 24 closed plug and a second-stage retracted column side hole 25.
Detailed Description
The specific structure of the present invention will be described in detail with reference to FIGS. 1 to 7. The two-stage oil cylinder comprises an outer cylinder body 1 consisting of an outer cylinder body 11, wherein the rear end of the outer cylinder body 11 of the outer cylinder body 1 is provided with an outer cylinder bottom 2, an inner cylinder telescopic socket 12 at the front end of the outer cylinder body 11 is movably inserted with a first-stage inner cylinder body 6, and an outer cylinder guide sleeve 4 is further arranged at the inner cylinder telescopic socket 12 of the outer cylinder body 11, so that the extension of the first-stage inner cylinder body 6 is effectively guided while the inner cavity of the outer cylinder body 1 is sealed. The primary inner cylinder 6 is composed of an inner cylinder 16, and the inner cylinder 16 is located at the rear end inside the outer cylinder 1 and is provided with an inner cylinder bottom 15.
The inner cavity of the outer cylinder barrel 11 of the outer cylinder body 1 is sealed and separated into a first-stage rodless cavity 13 and a first-stage rod cavity 14 which are mutually independent by an inner cylinder bottom 15 at the rear end of the first-stage inner cylinder body 6. Moreover, the primary rodless cavity 13 is communicated with the primary rodless cavity liquid inlet and return port 3 on the outer cylinder body 1; in order to facilitate the connection of oil pipelines and effectively improve the overall structural strength of the outer cylinder body 1, the primary rodless cavity liquid inlet and return port 3 is arranged on the side part of the outer cylinder bottom 2 of the outer cylinder body 1. Meanwhile, the first-stage rod cavity 14 is connected with the first-stage rod cavity liquid inlet and return port 5 on the outer cylinder body 1, and the first-stage rod cavity liquid inlet and return port 5 is arranged on the side part of the outer cylinder guide sleeve 4 of the outer cylinder body 1, so that the structural strength of the whole outer cylinder body 1 is improved, and the connection of oil pipelines is facilitated. Thus, the primary inner cylinder 6 is extended by the high-pressure oil which enters the primary rodless cavity 13 of the outer cylinder 1 through the primary rodless cavity inlet/return port 3, and the primary inner cylinder 6 is retracted by the high-pressure oil which enters the primary rodless cavity 14 of the outer cylinder 1 through the primary rodless cavity inlet/return port 5.
The flexible socket 17 department of the post of living of 6 front ends of the one-level internal cylinder body of grafting at external cylinder body 1 front end, the activity is pegged graft and is provided with second grade post 8 that lives, and the flexible socket 17 department of post of living of the one-level internal cylinder body 6 still is provided with inner cylinder uide bushing 7, and then seals 6 inner chambers of the one-level internal cylinder body to for the flexible effective direction that leads of second grade post 8 that lives. The secondary plunger 8 is composed of a plunger cylinder 21, and the rear end of the plunger cylinder 21, which is positioned in the primary inner cylinder 6, is provided with a piston 20; the inner cavity of the inner cylinder 16 of the primary inner cylinder 6 is sealed and partitioned into a secondary rodless cavity 18 and a secondary rodless cavity 19 which are independent of each other by a piston 20 at the rear end of the secondary plunger 8. Meanwhile, the secondary rodless cavity 18 is communicated with a secondary rodless cavity liquid inlet and return port 9 on the secondary plunger 8, and the secondary rod cavity 19 is communicated with a secondary rod cavity liquid inlet and return port 10 on the secondary plunger 8; and then the high-pressure oil liquid entering the secondary rodless cavity 18 of the primary inner cylinder 6 from the secondary rodless cavity liquid inlet and return port 9 is utilized to extend the secondary plunger 8, and the high-pressure oil liquid entering the secondary rodless cavity 19 of the primary inner cylinder 6 through the secondary rodless cavity liquid inlet and return port 10 withdraws the secondary plunger 8.
In order to facilitate the connection of the oil pipeline at the end part of the second-stage plunger 8 and increase the compact structure degree of the second-stage plunger 8, the second-stage rodless cavity liquid inlet and outlet 9 and the second-stage rod cavity liquid inlet and outlet 10 are respectively arranged at the front end of the plunger cylinder body 21 of the second-stage plunger 8 and positioned at the outer side of the plunger telescopic socket 17 of the first-stage inner cylinder body 6. Meanwhile, the secondary rodless cavity liquid inlet/return port 9 is connected with a secondary extended column liquid channel 22 arranged inside the plunger body 21, and an end hole of the secondary extended column liquid channel 22 is arranged on the inner end side of the piston 20. The second-stage rod cavity liquid inlet and return port 10 is connected with a second-stage column collecting liquid channel 23 arranged in the plunger body 21, and the second-stage column collecting liquid channel 23 is positioned at an end hole at the inner end side of the piston 20 and is provided with a closed plug 24; the rear end part of the secondary plunger retracting liquid channel 23 is connected with a secondary plunger retracting side hole 25 arranged on the side wall of the plunger body 21, and the secondary plunger retracting side hole 25 is positioned at the outer end side of the piston 20 and above the extending direction of the secondary plunger 8. Therefore, the piston 20 is pushed out or pressed back by the high-pressure oil flowing out through the end hole of the secondary extending column liquid channel 22 and the secondary retracting column side hole 25 which are arranged at the two end sides of the piston 20 of the secondary plunger 8 respectively, so as to extend or retract the secondary plunger 8, and the use reliability is ensured.
When the two-stage oil cylinder is used, when the one-stage inner cylinder body 6 needs to be independently extended, high-pressure oil enters the liquid return port 3 through the one-stage rodless cavity at the side part of the outer cylinder bottom 2 and enters the one-stage rodless cavity body 13 of the outer cylinder body 1, and then the one-stage inner cylinder body 6 is ejected out (as shown in fig. 5); and when the primary inner cylinder body 6 is retracted, the primary inner cylinder body 6 is retracted by using high-pressure oil which enters the primary rod cavity 14 of the outer cylinder body 1 from the primary rod cavity liquid inlet/return port 5 at the side of the outer cylinder guide sleeve 4 (as shown in fig. 6). When the secondary plunger 8 needs to be extended out independently, the secondary plunger 8 is extended out by utilizing high-pressure oil liquid which enters the liquid return port 9 from the secondary rodless cavity at the front end of the secondary plunger 8 and enters the secondary rodless cavity 18 of the primary inner cylinder body 6 (as shown in figure 6); when the secondary plunger 8 is retracted, the secondary plunger 8 is retracted by high pressure oil entering the secondary rod chamber 19 of the primary inner cylinder 6 through the secondary rod chamber inlet/return port 10 (as shown in fig. 5).
When the primary inner cylinder body 6 and the secondary plunger 8 need to be extended out simultaneously, high-pressure oil enters the primary rodless cavity 13 of the outer cylinder body 1 and the secondary rodless cavity 18 of the primary inner cylinder body 6 through the primary rodless cavity liquid inlet and return port 3 and the secondary rodless cavity liquid inlet and return port 9 respectively, and then the primary inner cylinder body 6 and the secondary plunger 8 are pushed to be extended out simultaneously (as shown in fig. 7). Because the first-stage rodless cavity 13 and the first-stage rod cavity 14 of the outer cylinder body 1 and the second-stage rodless cavity 18 and the second-stage rod cavity 19 of the first-stage inner cylinder body 6 are not communicated with each other, the independent extension or retraction of the first-stage inner cylinder body 6 and the second-stage movable column 8 of the oil cylinder is realized, and the requirements of various different use working conditions are met.
Claims (9)
1. The utility model provides a two-stage cylinder, includes outer cylinder body (1), its characterized in that: an outer cylinder bottom (2) is arranged at one end of the outer cylinder body (1), a primary inner cylinder body (6) is movably inserted into an opening at the other end of the outer cylinder body (1), an inner cylinder bottom (15) is arranged at one end, located inside the outer cylinder body (1), of the primary inner cylinder body (6), and a secondary movable column (8) is movably inserted into an opening at the other end of the primary inner cylinder body (6); and one end of the second-stage plunger (8) positioned inside the first-stage inner cylinder body (6) is provided with a piston (20), the other end of the second-stage plunger (8) is provided with a second-stage liquid inlet and return port, and the outer cylinder body (1) is provided with a first-stage liquid return port.
2. The two-stage cylinder according to claim 1, characterized in that: the outer cylinder body (1) is composed of an outer cylinder body (11), the inner cavity of the outer cylinder body (11) is divided into a first-stage rodless cavity (13) and a first-stage rod cavity (14) which are mutually independent by an inner cylinder bottom (15) at the inner end of the first-stage inner cylinder body (6); the primary rodless cavity (13) is communicated with the primary rodless cavity liquid inlet and return port (3) on the outer cylinder body (1), and the primary rod cavity (14) is connected with the primary rod cavity liquid inlet and return port (5) on the outer cylinder body (1).
3. The two-stage cylinder according to claim 2, characterized in that: the primary rodless cavity liquid inlet and return port (3) is arranged on the side part of the outer cylinder bottom (2) of the outer cylinder body (1).
4. The two-stage cylinder according to claim 2, characterized in that: an outer cylinder guide sleeve (4) is arranged at the opening end of the outer cylinder body (1).
5. The two-stage cylinder according to claim 4, wherein: the primary rod cavity liquid inlet and return port (5) is arranged at the side part of the outer cylinder guide sleeve (4) of the outer cylinder body (1).
6. The two-stage cylinder according to claim 1, characterized in that: the primary inner cylinder body (6) is composed of an inner cylinder body (16), and the inner cavity of the inner cylinder body (16) is partitioned into a secondary rodless cavity (18) and a secondary rod cavity (19) which are independent from each other by a piston (20) at the inner end of the secondary plunger (8); the secondary rodless cavity (18) is communicated with a secondary rodless cavity liquid inlet and return port (9) on the secondary plunger (8), and the secondary rod cavity (19) is communicated with a secondary rod cavity liquid inlet and return port (10) on the secondary plunger (8).
7. The two-stage cylinder according to claim 6, characterized in that: the second-stage plunger (8) is composed of a plunger cylinder body (21), the plunger cylinder body (21) is positioned at one end of the outer side of the opening end of the first-stage inner cylinder body (6), and a second-stage rodless cavity liquid inlet and return port (9) and a second-stage rod cavity liquid inlet and return port (10) are respectively arranged; the secondary rodless cavity liquid inlet and return port (9) is connected with a secondary column extending liquid channel (22) arranged inside the plunger cylinder (21), and the secondary rod cavity liquid inlet and return port (10) is connected with a secondary column collecting liquid channel (23) arranged inside the plunger cylinder (21).
8. The two-stage cylinder according to claim 7, wherein: the end hole setting that the second grade of second grade plunger (8) stretched post liquid way (22) is in the inner end side of piston (20), the terminal portion that the post liquid was received to the second grade sets up on with plunger cylinder (21) lateral wall and receives post side hole (25) and link to each other, just post side hole (25) are received to the second grade is located the outside of piston (20) distolaterally, towards the party of direction of stretching out.
9. The two-stage cylinder according to claim 1, characterized in that: an inner cylinder guide sleeve (7) is arranged at the opening end of the first-stage inner cylinder body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111441830.4A CN113983029A (en) | 2021-11-30 | 2021-11-30 | Two-stage oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111441830.4A CN113983029A (en) | 2021-11-30 | 2021-11-30 | Two-stage oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113983029A true CN113983029A (en) | 2022-01-28 |
Family
ID=79732671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111441830.4A Pending CN113983029A (en) | 2021-11-30 | 2021-11-30 | Two-stage oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113983029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670479A (en) * | 2022-05-31 | 2022-06-28 | 合肥合锻智能制造股份有限公司 | High-pressure quick long-stroke hydraulic machine |
-
2021
- 2021-11-30 CN CN202111441830.4A patent/CN113983029A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670479A (en) * | 2022-05-31 | 2022-06-28 | 合肥合锻智能制造股份有限公司 | High-pressure quick long-stroke hydraulic machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203532406U (en) | Multi-stage double-action reinforced hydraulic cylinder | |
| CN113983029A (en) | Two-stage oil cylinder | |
| CN111503088B (en) | Single-telescopic thrust multiplication hydraulic cylinder | |
| CN216478142U (en) | Two-stage oil cylinder | |
| CN113550957A (en) | Two-stage synchronous hydraulic cylinder | |
| CN113323943B (en) | Stroke-adjustable double-stroke single-stage double-acting drill rod clamping oil cylinder | |
| CN101737375A (en) | Top cylinder center oil-taking two-level sleeve cylinder | |
| CN111017785B (en) | Energy-saving hydraulic cylinder for reciprocating lifting | |
| CN202690555U (en) | Booster cylinder | |
| CN211852373U (en) | Two-stage independent control oil cylinder structure | |
| CN203453173U (en) | Beading pushing oil cylinder of steel rail flash welding machine | |
| CN211599147U (en) | Sequence oil cylinder with hydraulic control one-way valve | |
| CN114876911A (en) | Three-stage synchronous telescopic hydraulic oil cylinder | |
| CN216554728U (en) | Two-stage telescopic oil cylinder | |
| CN214304644U (en) | Multi-stage central sleeve hydraulic cylinder structure capable of extending and retracting step by step | |
| CN209892544U (en) | Double-oil-cylinder continuous sequential telescopic device and two-stage telescopic arm | |
| CN203614507U (en) | Two-stage equal-thrust hydraulic oil cylinder | |
| CN217682570U (en) | Three-stage synchronous telescopic hydraulic oil cylinder | |
| CN107387353B (en) | Ultrahigh pressure water pump | |
| CN202612030U (en) | Two-stage compression device of pneumatic oil cylinder | |
| CN215861082U (en) | Sequential action hydraulic cylinder | |
| CN213270498U (en) | Supercharger with approach switches at two ends | |
| CN102678506A (en) | Coaxial compressor cylinder two-stage compression device | |
| CN209990712U (en) | Liquid type pressure boost spring cylinder | |
| CN219754954U (en) | Controllable multi-cavity multi-action hydraulic cylinder |
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 |