CN114370442A - Double-piston oil cylinder - Google Patents
Double-piston oil cylinder Download PDFInfo
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- CN114370442A CN114370442A CN202111623623.0A CN202111623623A CN114370442A CN 114370442 A CN114370442 A CN 114370442A CN 202111623623 A CN202111623623 A CN 202111623623A CN 114370442 A CN114370442 A CN 114370442A
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- oil hole
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- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
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- 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
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- 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
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
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- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/202—Externally-operated valves mounted in or on the actuator
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to the technical field of hydraulic cylinders, and discloses a double-piston oil cylinder which comprises an oil cylinder body, wherein a first cavity and a second cavity are arranged inside the oil cylinder body, a first piston is arranged in the first cavity, a second piston is arranged in the second cavity, a piston rod is arranged on one side of the first piston, which is far away from the second piston, an adjusting rod is arranged on one side of the second piston, which is far away from the first piston, the piston rod and the adjusting rod penetrate through the oil cylinder body, at least one first oil hole is formed in the oil cylinder body, the first oil hole is communicated with the first cavity, at least one second oil hole and at least one third oil hole are formed in the oil cylinder body, the second oil hole and the third oil hole are respectively communicated with the second cavity, the first oil hole is respectively connected with the second oil hole and the third oil hole through a flow adjusting assembly, an adjusting sleeve is arranged on the adjusting rod, when the adjusting sleeve is connected with the third oil hole, the third oil hole is not communicated with the second cavity, when the adjusting sleeve is separated from the third oil hole, the invention can adjust the speed of the butterfly check valve and the angles of fast closing and slow closing of the valve.
Description
Technical Field
The invention relates to the technical field of hydraulic oil cylinders, in particular to a double-piston oil cylinder.
Background
The check valve is used as a key device of the water pump outlet, the performance of the check valve is related to the safety of the pipeline and the water pump, the problem that when the pump is stopped, particularly when the pump is stopped due to accidents, a large amount of water flows backwards to cause the water pump to reverse and damage a motor is solved, and the damage of a water hammer to the pipeline caused by sudden rise of water pressure due to too fast closing is prevented. In order to enable the check valve to have the two performances, the check valve on the market at present is provided with an oil cylinder (the large caliber can be two) for preventing the valve from being closed quickly, so that the valve has the function of being closed in two stages of quick closing and slow closing.
At present, some oil cylinders in the market can only realize the adjustment of slow closing speed, some oil cylinders can realize the adjustment of fast closing speed and slow closing speed, and some oil cylinders are also provided with an oil storage tank, but cannot realize the adjustment of fast closing angle and slow closing angle and cannot adjust the valve opening speed.
Disclosure of Invention
The invention aims to provide a double-piston oil cylinder which has the effect of adjusting the fast and slow closing speed and the fast and slow closing angle of a check valve.
The technical purpose of the invention is realized by the following technical scheme: a double-piston oil cylinder comprises an oil cylinder body, wherein a first cavity and a second cavity are arranged inside the oil cylinder body, a first piston is arranged in the first cavity, a second piston is arranged in the second cavity, a piston rod is arranged on one side, far away from the second piston, of the first piston, an adjusting rod is arranged on one side, far away from the first piston, of the second piston, the piston rod and the adjusting rod penetrate through the oil cylinder body, at least one first oil hole is formed in the oil cylinder body, the first oil hole is communicated with the first cavity, at least one second oil hole and at least one third oil hole are formed in the oil cylinder body, the second oil hole and the third oil hole are respectively communicated with the second cavity, the first oil hole is respectively connected with the second oil hole and the third oil hole through a flow adjusting assembly, an adjusting sleeve is arranged on the adjusting rod, when the adjusting sleeve is connected with the third oil hole, the third oil hole is not communicated with the second cavity, and when the adjusting sleeve is separated from the third oil hole, and the oil hole III is communicated with the cavity II.
According to the further arrangement of the oil cylinder, the oil cylinder body comprises a cylinder body, a front end cover and a rear end cover, a first through hole is formed in the front end cover, a second through hole is formed in the rear end cover, the piston rod penetrates through the front end cover through the first through hole, the adjusting rod penetrates through the rear end cover through the second through hole, a first oil hole is formed in the front end cover and communicated with the first cavity, a second oil hole and a third oil hole are formed in the rear end cover and directly communicated with the second cavity, the third oil hole is communicated with the second through hole, and the adjusting sleeve is coaxially clamped in the second through hole in a sliding mode.
According to the further arrangement of the invention, the diameter of the adjusting rod is smaller than that of the second through hole, the diameter of the adjusting sleeve is equal to that of the second through hole, when the second piston is positioned at the bottom of the second chamber, the adjusting sleeve blocks the third oil hole, and when the second piston is positioned at the top of the second chamber, the adjusting sleeve is positioned at one side of the third oil hole, which is far away from the second piston, so that the third oil hole is communicated with the second chamber through the second through hole.
As a further arrangement of the invention, the distance between the adjusting sleeve and the second piston is adjustable.
As a further arrangement of the invention, the adjusting sleeve and the adjusting rod are in threaded connection.
As a further arrangement of the invention, the flow regulating assembly comprises a regulating valve group arranged at the second oil hole, the regulating valve group comprises a first check valve and a first speed regulating valve which are connected in parallel, the first check valve controls oil to flow out of the second oil hole, one end of the regulating valve group is connected with the second speed regulating valve, the third oil hole is provided with a second check valve, the second check valve controls oil to flow into the third oil hole, one end of the second check valve is connected with the third oil hole, one end of the third speed regulating valve is connected with the third speed regulating valve, and the third speed regulating valve is respectively connected with the second speed regulating valve and the first oil hole.
As a further arrangement of the invention, a limiting hole is arranged between the first chamber and the second chamber of the cylinder body, and a limiting rod is arranged in the limiting hole.
As a further arrangement of the invention, the limiting hole is a threaded hole, and the limiting rod is a threaded rod.
The invention has the beneficial effects that:
when the valve is opened, the valve drives the piston rod to return first, the piston rod extrudes air in the cavity, so that the adjusting rod drives the adjusting sleeve to extend out, the adjusting sleeve blocks the oil hole III, the check valve II is arranged at the oil hole III, hydraulic oil cannot flow out of the oil hole III, oil in the cavity II flows out through the oil hole II, flows to the cavity I from the oil hole through the speed regulating valve I, the check valve I and the speed regulating valve II, pressure is applied to the piston I, the speed of the piston I is changed, the speed regulating valve II is adjusted, the flow speed and the flow of the oil in the cavity II flowing into the cavity I can be adjusted, the movement speed of the piston rod is controlled, and the quick opening speed of the valve is controlled; after the piston rod is completely withdrawn, the valve is continuously opened, the adjusting sleeve does not block the oil hole III at the moment, the piston rod extends out, the adjusting rod drives the adjusting sleeve to withdraw, oil in the cavity I flows out through the oil hole I, a part of oil returns to the cavity II from the oil hole II through the speed regulating valve II and the speed regulating valve I, a part of oil returns to the cavity II from the oil hole III through the speed regulating valve III and the one-way valve II, and the speed of the oil in the cavity I flowing into the cavity II can be controlled through the speed regulating valve II and the speed regulating valve III, so that the moving speed of the piston rod is controlled, and the quick opening speed of the valve is adjusted; when the adjusting rod drives the adjusting sleeve to return to the position of the oil hole III, the oil hole III is blocked, hydraulic oil cannot flow to the chamber II from the oil hole III, oil in the chamber I only passes through the speed regulating valve II and returns to the chamber II through the oil hole II, the opening speed of the valve is obviously reduced, the speed regulating valve II is adjusted, the slow opening speed of the valve can be adjusted, and the buffering effect is achieved when the valve is opened to the position.
When the valve is closed, the principle is the same as that when the valve is opened, the valve drives the piston rod to return firstly, the piston rod extrudes air in the cavity, so that the adjusting rod drives the adjusting sleeve to extend out, the adjusting sleeve blocks the oil hole III, the check valve II is arranged at the oil hole III, hydraulic oil cannot flow out of the oil hole III, oil in the cavity II flows out through the oil hole II, passes through the speed regulating valve I, the check valve I and the speed regulating valve II and flows to the cavity I from the oil hole I, pressure is applied to the piston I, the speed of the piston I is changed, the speed regulating valve II is adjusted, the flow speed and the flow of the oil in the cavity II flowing into the cavity I can be adjusted, and the movement speed of the piston rod is controlled, so that the quick closing speed of the valve is controlled; after the piston rod is completely retracted, the valve is continuously closed, the adjusting sleeve does not block the oil hole III at the moment, the piston rod extends out, the adjusting rod drives the adjusting sleeve to retract, oil in the cavity I flows out through the oil hole I, a part of oil returns to the cavity II from the oil hole II through the speed regulating valve II and the speed regulating valve I, a part of oil returns to the cavity II from the oil hole III through the speed regulating valve III and the one-way valve II, and the speed of the oil in the cavity I flowing into the cavity II can be controlled through the speed regulating valve II and the speed regulating valve III, so that the moving speed of the piston rod is controlled, and the quick closing speed of the valve is adjusted; when the adjusting rod drives the adjusting sleeve to return to the position of the oil hole III, the oil hole III is blocked, hydraulic oil cannot flow to the chamber II from the oil hole III, oil in the chamber I only passes through the speed regulating valve II and returns to the chamber II through the oil hole II, the closing speed of the valve is obviously reduced, the speed regulating valve II is adjusted, the slow closing speed of the valve can be adjusted, and the buffering effect is achieved when the valve is closed in place.
And (3) adjusting the fast and slow closing (opening) angle, namely adjusting the rotating angle of the valve during fast closing (or fast opening) and the rotating angle of the valve during slow closing (or slow opening), namely adjusting the proportion of the rotating angle of the valve during fast closing (opening) (or the rotating angle of the valve during slow closing (opening)) to the total rotating angle of the valve during closing of the valve, rotating the adjusting sleeve according to the requirement of the actual using working condition of the valve to change and adjust the distance between the piston II, so that when the valve is opened or closed, the time for blocking the oil hole III by the adjusting sleeve is changed, the time for communicating the oil hole III with the cavity II is changed, and the fast closing (opening) angle and the slow closing (opening) angle can be changed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present embodiment;
in the figure, the oil cylinder comprises an oil cylinder body 1, an oil cylinder body 2, first chambers 3, second chambers 4, first pistons 5, second pistons 6, a piston rod 7, an adjusting rod 8, first oil holes 9, second oil holes 10, third oil holes 11, a flow adjusting assembly 12, an adjusting sleeve 13, a cylinder body 14, a front end cover 15, a rear end cover 16, first through holes 17, second through holes 18, first check valves 19, first speed regulating valves 20, second speed regulating valves 21, second check valves 22, third speed regulating valves 23, limiting holes 24 and limiting rods.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Examples
A double-piston oil cylinder is disclosed, referring to figure 1, and comprising an oil cylinder body 1, wherein the oil cylinder body 1 comprises a cylinder body 13, a front end cover 14 and a rear end cover 15, a first cavity 2 and a second cavity 3 are arranged inside the cylinder body 13, a first piston 4 is arranged in the first cavity 2, a second piston 5 is arranged in the second cavity 3, a threaded hole is formed in the side edge of the cylinder body 13, which is positioned at the joint of the first cavity 2 and the second cavity 3, a threaded rod is arranged in the threaded hole and prevents the first piston 4 and the second piston 5 from separating from the original cavity, a piston rod 6 is arranged on the side of the first piston 4, which is far away from the second piston 5, an adjusting rod 7 is arranged on the side of the second piston 5, a first through hole 16 is formed in the front end cover 14, a second through hole 17 is formed in the rear end cover 15, the piston rod 6 penetrates through the front end cover 14 via the first through hole 16, the adjusting rod 7 penetrates through the rear end cover 15 via the second through hole 17, at least one oil hole 8 is formed in the front end cover 14, the oil hole I8 is communicated with the cavity I2, the rear end cover 15 is provided with at least one oil hole II 9 and at least one oil hole III 10, the oil hole II 9 is directly communicated with the cavity II 3, the oil hole III 10 is communicated with the through hole II 17, the specific number of the oil hole I8, the oil hole II 9 and the oil hole III 10 can be determined according to the size and the practical use condition of the oil cylinder body 1, the adjusting rod 7 is provided with an adjusting sleeve 12, the adjusting sleeve 12 is coaxially and slidably clamped in the through hole II 17, the diameter of the adjusting rod 7 is smaller than that of the through hole II 17, the diameter of the adjusting sleeve 12 is equal to that of the through hole II 17, when the piston II 5 is positioned at the bottom of the cavity II 3, the adjusting sleeve 12 blocks the oil hole III 10, when the piston II 5 is positioned at the top of the cavity II 3, the adjusting sleeve 12 is positioned at one side of the oil hole III 10 far away from the piston II 5, so that the oil hole III 10 is communicated with the cavity II 3 through the through hole II 17, the adjusting sleeve 12 is in threaded connection with the adjusting rod 7, so that the distance between the adjusting sleeve 12 and the second piston 5 is adjustable.
The first oil hole 8 is connected with the second oil hole 9 and the third oil hole 10 through the flow adjusting assembly 11, the flow adjusting assembly 11 comprises an adjusting valve group arranged at the second oil hole 9, the adjusting valve group comprises a first check valve 18 and a first speed regulating valve 19 which are connected in parallel, the first check valve 18 controls an oil body to flow out of the second oil hole 9, one end of the adjusting valve group is connected with a second speed regulating valve 20, the third oil hole 10 is provided with a second check valve 21, the second check valve 21 controls the oil body to flow into the third oil hole 10, one end of the second check valve 21 is connected with the third oil hole 10, one end of the third speed regulating valve 22 is connected with the second speed regulating valve 20 and the first oil hole 8 respectively.
The working principle of the invention is as follows:
when the valve is opened, the valve drives the piston rod 6 to return first, the piston rod 6 extrudes air in the cavity, so that the adjusting rod 7 drives the adjusting sleeve 12 to extend, the adjusting sleeve 12 blocks the oil hole III 10 at the moment, the check valve II 21 is arranged at the oil hole III 10, hydraulic oil cannot flow out of the oil hole III 10, oil in the cavity II 3 flows out through the oil hole II 9, passes through the speed regulating valve I19, the check valve I18 and the speed regulating valve II 20 and then flows to the cavity I2 from the oil hole I8, pressure is applied to the piston I4, the speed of the piston I4 is changed, the speed regulating valve II 20 is adjusted, the flow speed and the flow rate of the oil in the cavity II 3 flowing into the cavity I2 can be adjusted, the movement speed of the piston rod 6 is controlled, and the quick opening speed of the valve is controlled; after the piston rod 6 is completely withdrawn, the valve is continuously opened, the adjusting sleeve 12 does not block the oil hole III 10 at the moment, the piston rod 6 extends out, the adjusting rod 7 drives the adjusting sleeve 12 to withdraw, oil in the cavity I2 flows out through the oil hole I8, a part of oil returns to the cavity II 3 from the oil hole II 9 through the speed regulating valve II 20 and the speed regulating valve I19, a part of oil returns to the cavity II 3 from the oil hole III 10 through the speed regulating valve III 22 and the one-way valve II 21, and the speed of the oil in the cavity I2 flowing into the cavity II 3 can be controlled through the speed regulating valve II 20 and the speed regulating valve III 22, so that the moving speed of the piston rod 6 is controlled, and the quick opening speed of the valve is adjusted; when the adjusting rod 7 drives the adjusting sleeve 12 to return to the position of the oil hole III 10, the oil hole III 10 is blocked, hydraulic oil cannot flow to the chamber II 3 from the oil hole III 10, oil in the chamber I2 only flows through the speed regulating valve II 20 and returns to the chamber II 3 through the oil hole II 9, the opening speed of the valve is obviously reduced, the speed regulating valve II 20 can be adjusted to adjust the slow opening speed of the valve, and the buffering effect is achieved when the valve is opened to the position.
When the valve is closed, the principle is the same as that when the valve is opened, the valve drives the piston rod 6 to return firstly, the piston rod 6 extrudes air in the cavity, so that the adjusting rod 7 drives the adjusting sleeve 12 to extend out, at the moment, the adjusting sleeve 12 blocks the oil hole III 10, the check valve II 21 is arranged at the oil hole III 10, hydraulic oil cannot flow out of the oil hole III 10, oil in the cavity II 3 flows out through the oil hole II 9, passes through the speed regulating valve I19, the check valve I18 and the speed regulating valve II 20 and then flows to the cavity I2 from the oil hole I8, so that pressure is applied to the piston I4, the speed of the piston I4 is changed, the speed regulating valve II 20 is adjusted, the flow speed and the flow rate of the oil in the cavity II 3 flowing into the cavity I2 can be adjusted, the movement speed of the piston rod 6 is controlled, and the speed of the valve is controlled to be quickly closed; after the piston rod 6 completely retracts, the valve is continuously closed, the adjusting sleeve 12 does not block the oil hole III 10 at the moment, the piston rod 6 extends out, the adjusting rod 7 drives the adjusting sleeve 12 to retract, oil in the cavity I2 flows out through the oil hole I8, a part of oil returns to the cavity II 3 from the oil hole II 9 through the speed regulating valve II 20 and the speed regulating valve I19, a part of oil returns to the cavity II 3 from the oil hole III 10 through the speed regulating valve III 22 and the one-way valve II 21, and the speed of the oil in the cavity I2 flowing into the cavity II 3 can be controlled through the speed regulating valve II 20 and the speed regulating valve III 22, so that the moving speed of the piston rod 6 is controlled, and the fast closing speed of the valve is adjusted; when the adjusting rod 7 drives the adjusting sleeve 12 to return to the position of the oil hole III 10, the oil hole III 10 is blocked, hydraulic oil cannot flow to the chamber II 3 from the oil hole III 10, oil in the chamber I2 only flows through the speed regulating valve II 20 and returns to the chamber II 3 through the oil hole II 9, the closing speed of the valve is obviously reduced, the speed of the valve which is closed slowly can be adjusted by adjusting the speed regulating valve II 20, and the buffering effect is achieved when the valve is closed in place.
Adjusting the fast-slow closing (opening) angle, namely adjusting the rotating angle of the valve during fast closing (or fast opening) and the rotating angle of the valve during slow closing (or slow opening), namely adjusting the proportion of the rotating angle of the valve during fast closing (opening) (or the rotating angle of the valve during slow closing (opening)) to the total rotating angle of the valve during closing the valve, rotating the adjusting sleeve 12 according to the requirement of the actual using working condition of the valve to change and adjust the distance between the piston II 5, so that the time for blocking the oil hole III 10 by the adjusting sleeve 12 is changed during opening or closing the valve, the time for communicating the oil hole III 10 with the cavity II 3 is changed, and the fast-closing (opening) angle and the slow-closing (opening) angle can be changed.
Claims (8)
1. A double-piston oil cylinder is characterized in that: including hydro-cylinder body (1), inside cavity one (2) and the cavity two (3) of being provided with of hydro-cylinder body (1), be provided with piston one (4) in cavity one (2), be provided with piston two (5) in cavity two (3), piston one (4) is kept away from piston two (5) one side and is provided with piston rod (6), piston two (5) are kept away from piston one (4) one side and are provided with regulation pole (7), piston rod (6) and regulation pole (7) pass hydro-cylinder body (1), at least one oilhole (8) has been seted up on hydro-cylinder body (1), oilhole one (8) and cavity one (2) intercommunication, set up at least one oilhole two (9) and oilhole three (10) on hydro-cylinder body (1), oilhole two (9) and oilhole three (10) communicate with cavity two (3) respectively, oilhole one (8) pass through flow control subassembly (11) respectively with oilhole two (9) and oilhole three (3), (3) 10) And the adjusting rod (7) is provided with an adjusting sleeve (12), when the adjusting sleeve (12) is connected with the oil hole III (10), the oil hole III (10) is not communicated with the cavity II (3), and when the adjusting sleeve (12) is separated from the oil hole III (10), the oil hole III (10) is communicated with the cavity II (3).
2. The dual piston cylinder of claim 1, wherein: the oil cylinder body (1) comprises a cylinder body (13), a front end cover (14) and a rear end cover (15), a first through hole (16) is formed in the front end cover (14), a second through hole (17) is formed in the rear end cover (15), the piston rod (6) penetrates through the front end cover (14) through the first through hole (16), the adjusting rod (7) penetrates through the rear end cover (15) through the second through hole (17), a first oil hole (8) is formed in the front end cover (14), the first oil hole (8) is communicated with a first cavity (2), a second oil hole (9) and a third oil hole (10) are formed in the rear end cover (15), the second oil hole (9) is directly communicated with a second cavity (3), the third oil hole (10) is communicated with the second through hole (17), and the adjusting sleeve (12) is coaxially slidably clamped in the second through hole (17).
3. A dual piston cylinder as defined in claim 2, wherein: the diameter of the adjusting rod (7) is smaller than that of the second through hole (17), the diameter of the adjusting sleeve (12) is equal to that of the second through hole (17), when the second piston (5) is located at the bottom of the second cavity (3), the third oil hole (10) is blocked by the adjusting sleeve (12), and when the second piston (5) is located at the top of the second cavity (3), the adjusting sleeve (12) is located on one side, away from the second piston (5), of the third oil hole (10), so that the third oil hole (10) is communicated with the second cavity (3) through the second through hole (17).
4. A dual piston cylinder according to claim 3, wherein: the distance between the adjusting sleeve (12) and the second piston (5) is adjustable.
5. The dual piston cylinder of claim 4, wherein: the adjusting sleeve (12) is in threaded connection with the adjusting rod (7).
6. The dual piston cylinder of claim 5, wherein: flow control assembly (11) is including setting up the governing valve group in oilhole two (9) department, the governing valve group is including parallelly connected check valve (18) and governing valve (19), the flow of the oilhole two (9) is followed to check valve (18) control oil body, the one end and the oilhole two (9) of governing valve group are connected, and one end is connected with governing valve two (20), oilhole three (10) department is provided with check valve two (21), check valve two (21) control oil body flows in oilhole three (10) check valve two (21) one end links to each other with oilhole three (10), and one end is connected with governing valve three (22), governing valve three (22) link to each other with governing valve two (20) and oilhole one (8) respectively.
7. The dual piston cylinder of claim 1, wherein: the cylinder body (13) is located and sets up spacing hole (23) between cavity one (2) and cavity two (3), be provided with gag lever post (24) in spacing hole (23).
8. A dual piston cylinder as defined in claim 8, wherein: the limiting hole (23) is a threaded hole, and the limiting rod (24) is a threaded rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623623.0A CN114370442B (en) | 2021-12-28 | 2021-12-28 | Double-piston oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623623.0A CN114370442B (en) | 2021-12-28 | 2021-12-28 | Double-piston oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114370442A true CN114370442A (en) | 2022-04-19 |
| CN114370442B CN114370442B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111623623.0A Active CN114370442B (en) | 2021-12-28 | 2021-12-28 | Double-piston oil cylinder |
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| CN214037072U (en) * | 2020-10-13 | 2021-08-24 | 河南鸿佳伟业机械设备有限公司 | Multistage adjustable slow-closing mute oil cylinder for valve |
| CN113513465A (en) * | 2021-04-08 | 2021-10-19 | 西安交通大学 | Oil cylinder side buffering structure of liquid-driven piston compressor and liquid-driven piston compressor |
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2021
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| CN114370442B (en) | 2024-04-26 |
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