CN109578375B - Gas-liquid accelerating hydraulic cylinder - Google Patents
Gas-liquid accelerating hydraulic cylinder Download PDFInfo
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- CN109578375B CN109578375B CN201910064612.XA CN201910064612A CN109578375B CN 109578375 B CN109578375 B CN 109578375B CN 201910064612 A CN201910064612 A CN 201910064612A CN 109578375 B CN109578375 B CN 109578375B
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- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 238000004146 energy storage Methods 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims description 45
- 230000007246 mechanism Effects 0.000 claims description 24
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 20
- 239000007789 gas Substances 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
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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
- F15B15/1423—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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- 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
- F15B15/1438—Cylinder to end cap assemblies
- F15B15/1442—End cap 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention provides a gas-liquid accelerating hydraulic cylinder, which belongs to the field of driving devices and comprises a valve opening assembly, an energy storage assembly and a driving cylinder which are arranged from top to bottom, wherein the driving cylinder comprises a high-speed rod, the output end of the high-speed rod is communicated with an external load, the energy storage assembly comprises a first driving cavity and a second driving cavity which are separated by a piston and are mutually independent, the second driving cavity is arranged at the lower end of the first driving cavity and drives the high-speed rod to move, the valve opening assembly comprises a lifting valve core, the lifting valve core moves up and down, and the lifting valve core penetrates through the piston to control the second driving cylinder to be communicated with and disconnected from the high-speed rod. The invention uses gas and liquid as energy conversion medium, and the energy output can reach the megajoule level in a very short millisecond level.
Description
Technical Field
The invention belongs to the field of driving devices, and relates to a gas-liquid accelerating hydraulic cylinder.
Background
The ultra-high speed driving device is mainly used for enabling a load to obtain extremely large initial kinetic energy and extremely high speed in extremely short time, and the currently adopted driving modes mainly comprise a steam type driving mode, an electromagnetic driving mode, a gas driving mode and the like, wherein the steam type driving mode, the electromagnetic driving mode and the gas driving mode cannot achieve large output energy in millisecond level due to tightness or structural limitation, and cannot achieve the requirement of more strict high level.
Disclosure of Invention
The invention aims to solve the problem of providing a gas-liquid accelerating hydraulic cylinder, which takes gas and liquid as energy conversion media, and the energy output can reach the level of megajoules in extremely short millisecond-level time.
In order to solve the technical problems, the invention adopts the following technical scheme: the gas-liquid accelerating hydraulic cylinder comprises a valve opening assembly, an energy storage assembly and a driving cylinder which are arranged from top to bottom, wherein the driving cylinder comprises a high-speed rod, the output end of the high-speed rod is communicated with an external load, the energy storage assembly comprises a first driving cavity and a second driving cavity which are separated by a piston and are mutually independent, the second driving cavity is arranged at the lower end of the first driving cavity and drives the high-speed rod to move, the valve opening assembly comprises a lifting valve core, the lifting valve core moves up and down, and the lifting valve core penetrates through the piston to control the second driving cylinder to be communicated with and disconnected from the high-speed rod.
Further, the first driving cavity is a first air cavity, the second driving cavity is a first oil cavity, and the second driving cavity is arranged at the lower end of the first driving cavity and is parallel to the lower end of the first driving cavity.
Further, the energy storage assembly further comprises a cylinder body and a first cylinder barrel which form a closed cavity, the piston is arranged in the closed cavity formed by the cylinder body and the first cylinder barrel and is in sliding connection with the cylinder body and the first cylinder barrel, the lifting valve core is perpendicular to the piston, and the lifting valve core is in sealing fit with the piston and is in sliding connection with the piston up and down.
Further, the driving cylinder comprises a high-speed rod, a second cylinder barrel and a cylinder head, the second cylinder barrel is vertically arranged at the lower end of the energy storage assembly, the cylinder head is arranged at the lower end of the second cylinder barrel and is in sealing arrangement with the second cylinder barrel, the high-speed rod is arranged in the second cylinder barrel and is in up-down sealing sliding connection with the second cylinder barrel, the high-speed rod downwards penetrates through the cylinder head and then is connected with an external load, a second oil cavity is formed between the high-speed rod and the cylinder head, and an oil port communicated with the second oil cavity is formed in the cylinder head.
Further, a plurality of first sealing rings which are arranged in parallel are arranged between the upper end of the high-speed rod and the second cylinder, and a plurality of second sealing rings which are arranged in parallel are arranged between the lower end of the high-speed rod and the cylinder head.
Further, the poppet includes main part pole, sealing disc and locking inclined plane, the sealing disc is established the lower extreme of main part pole, the locking inclined plane is established the upper end of main part pole, the locking inclined plane with the sealing disc is established the upper and lower both ends of piston, the sealing disc moves down the back with the inner circle sealing fit of second cylinder.
Further, the valve opening assembly further comprises a valve body, a self-locking rod and a driving mechanism, the valve body is arranged right above the energy storage assembly, the lifting valve core further comprises a valve plate, the valve plate is arranged in the valve body and moves up and down in a sealing mode relative to the valve body, the main body rod is perpendicular to the valve plate, a sealed second air cavity is formed between the upper end of the valve plate and the valve body, a first air cavity communicated with the second air cavity is formed in the valve body, a third air cavity communicated with the valve body and the energy storage assembly is formed in the lower end of the valve plate, a second air cavity communicated with the third air cavity is formed in the valve body, the self-locking rod is arranged in the valve body, and the driving mechanism drives the self-locking rod to move relative to the valve body and match with the locking inclined plane to achieve upper limit of the lifting valve core.
Further, the valve opening assembly further comprises a spring, the spring and the output shaft of the driving mechanism are coaxially arranged, and the spring is arranged between the valve body and the self-locking rod.
Further, the driving mechanism is pneumatic, hydraulic or mechanical.
Further, the valve opening assembly further comprises a valve body, a self-locking rod and a driving mechanism, the valve body is arranged right above the energy storage assembly, the lifting valve core further comprises a valve plate, the valve plate is arranged in the valve body and moves up and down in a sealing mode relative to the valve body, the main body rod is perpendicular to the valve plate, a sealed second air cavity is formed between the upper end of the valve plate and the valve body, a first air cavity communicated with the second air cavity is formed in the valve body, a third air cavity communicated with the valve body and the energy storage assembly is formed in the lower end of the valve plate, a second air cavity communicated with the third air cavity is formed in the valve body, the self-locking rod is arranged in the valve body, and the driving mechanism drives the self-locking rod to move relative to the valve body and cooperate with the lifting valve core to achieve upper limit of the lifting valve core.
Compared with the prior art, the invention has the following advantages and positive effects.
1. The invention adopts the integral design of the energy storage component in the driving cylinder, directly connects the liquid outlet of the piston energy storage component with the second cylinder of the driving cylinder, avoids the limitation of small flow rate of the outlet of the common energy storage component, omits the connection of a complex middle pipeline and a valve block, adopts the internal control valve, solves the problem of high pressure and large flow rate which cannot be realized by the conventional valve, and has the flow rate of more than 150000L/min at most, meanwhile, the structure eliminates the energy loss of hydraulic oil in the pipeline, completely uses the energy for load driving, and reduces the space volume of the equipment by more than half under the same condition;
2. The two-stage speed increaser is adopted, the speed increaser utilizes the extremely-rapid expansion characteristic of ultrahigh-pressure gas, the first stage is used for rapidly opening a valve assembly, the second stage energy storage assembly is used for rapidly driving a load, the flow of more than 150000L/min and the energy output of more than 1000KJ can be realized, and finally, the load with proper quality can reach extremely high movement speed (more than 80 m/s) within extremely-short time of millisecond level (less than or equal to 15 ms) so as to meet the working condition requirement of ultra-high load speed;
3. The hydraulic oil is used as an intermediate transmission medium, the characteristics of the hydraulic oil are utilized to lubricate and cool the sliding parts of the kinematic pair, the seal and the like at high speed, the problems of lubrication and cooling in the ultra-high speed movement process are solved, and the problems of high-temperature sintering, sealing melting and the like of the friction pair at high speed are avoided;
4. The driving mechanism and the spring are arranged, the spring can realize an automatic control mechanical lock, the requirement of quick valve opening is met, the self-locking rod and the lifting valve core are locked by utilizing the conical surface friction angle, and then the self-locking rod and the lifting valve core are quickly opened by utilizing high-pressure gas, so that the unlocking time is shortened, the unlocking time can be shortened to about 1ms, the reaction time is greatly shortened, and the efficiency is improved;
5. The first sealing ring and the second sealing ring are arranged, the speed limit of 15m/s of conventional sealing is broken through, the ultrahigh speed sealing is realized, and the highest speed can be more than 80m/s.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of a gas-liquid acceleration hydraulic cylinder of the present invention;
FIG. 2 is a cross-sectional view of a gas-liquid acceleration hydraulic cylinder of the present invention;
fig. 3 is an enlarged view of a portion of fig. 2 in accordance with the present invention.
Reference numerals:
1-a cylinder body; 2-a first cylinder; 3-a first air cavity; 4-a piston; 5-a first oil chamber; 6-a high speed bar; 61-a first sealing ring; 62-a second seal ring; 8-a second cylinder; 9-a second oil chamber; 10-an oil port; 11-cylinder head; 12-loading; 20-a driving mechanism; 21-a spring; 22-self locking bar; 23-a second air cavity; 24-lifting the valve core; 241-body stem; 242-sealing discs; 243-locking ramp; 244-a valve plate; 25-a third air cavity; 26-first port 27-second port; 30-valve body; 90-valve opening assembly; 91-an energy storage assembly; 92-drive cylinder.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the invention is a gas-liquid speed-increasing hydraulic cylinder, which comprises a valve opening assembly 90, an energy storage assembly 91 and a driving cylinder 92 which are arranged from top to bottom, wherein the energy storage assembly 91 is used for storing certain hydraulic energy, the driving cylinder 92 comprises a high-speed rod 6, the output end of the high-speed rod 6 is communicated with an external load 12 and pushes the load 12 to achieve required kinetic energy, the valve opening assembly 90 is mainly used for rapidly supplying high-pressure hydraulic oil in the energy storage assembly 91 to the driving cylinder 92 so as to accelerate the high-speed rod 6 of the high-speed cylinder, the energy storage assembly 91 comprises a first driving cavity and a second driving cavity which are separated by a piston 4 and are mutually independent, the second driving cavity is arranged at the lower end of the first driving cavity and drives the high-speed rod 6 to move, the valve opening assembly 90 comprises a lifting valve core 24, and the lifting valve core 24 passes through the piston 4 to control the second driving cylinder 92 to be communicated with and disconnected from the high-speed rod 6.
Preferably, the first driving cavity is a first air cavity 3, the second driving cavity is a first oil cavity 5, and the second driving cavity is arranged at the lower end of the first driving cavity and is parallel to the first driving cavity.
Preferably, the energy storage component 91 further comprises a cylinder body 1 and a first cylinder barrel 2 which form a closed cavity, the piston 4 is arranged in the closed cavity formed by the cylinder body 1 and the first cylinder barrel 2 and is in sliding connection with the cylinder body 1 and the first cylinder barrel 2, the lifting valve core 24 is perpendicular to the piston 4, and the lifting valve core 24 is in sealing fit with the piston 4 and is in sliding connection with the piston 4 up and down.
Preferably, the driving cylinder 92 comprises a high-speed rod 6, a second cylinder 8 and a cylinder head 11, the second cylinder 8 is vertically arranged at the lower end of the energy storage component 91, the cylinder head 11 is arranged at the lower end of the second cylinder 8 and is in sealing arrangement with the second cylinder 8, the high-speed rod 6 is arranged in the second cylinder 8 and is in up-down sealing sliding connection with the second cylinder, the high-speed rod 6 downwards passes through the cylinder head 11 and then is connected with an external load 12, a second oil cavity 9 is formed between the high-speed rod 6 and the cylinder head 11, and an oil port 10 communicated with the second oil cavity 9 is arranged on the cylinder head 11.
Preferably, a plurality of first sealing rings which are arranged in parallel are arranged between the upper end of the high-speed rod 6 and the second cylinder barrel 8, a plurality of second sealing rings which are arranged in parallel are arranged between the lower end of the high-speed rod and the cylinder head 11, and more preferably, the first sealing rings and the second sealing rings are made of composite materials, and the composite materials are preferably made of polytetrafluoroethylene, glass fiber or carbon fiber materials.
Preferably, the poppet 24 includes a main body rod 241, a sealing disc 242 and a locking inclined surface 243, the sealing disc 242 is disposed at the lower end of the main body rod 241, the locking inclined surface 243 is disposed at the upper end of the main body rod 241, the locking inclined surface 243 and the sealing disc 242 are disposed at the upper and lower ends of the piston 4, the sealing disc 242 is in sealing fit with the inner ring of the second cylinder 8 and is in inclined contact with the inner ring after moving downwards, so that the inner cavity of the second cylinder 8 is isolated from and communicated with the first oil cavity 5, the preparation work for starting is realized in an isolated state, energy storage is realized, and in a communicated state, the energy storage is instantaneously opened and is instantaneously converted into kinetic energy for releasing.
Preferably, the valve opening assembly 90 further comprises a valve body 30, a self-locking rod 22 and a driving mechanism 20, the valve body 30 is arranged right above the energy storage assembly 91, the lifting valve core 24 further comprises a valve plate 244, the valve plate 244 is arranged in the valve body 30 and moves up and down in a sealing mode relative to the valve body 30, a main body rod 241 is perpendicular to the valve plate 244, a sealed second air cavity 23 is formed between the upper end of the valve plate 244 and the valve body 30, a first air cavity 26 communicated with the second air cavity 23 is formed in the valve body 30, a sealed third air cavity 25 is formed between the lower end of the valve plate 244 and the valve body 30 and the energy storage assembly 91, a second air port 27 communicated with the third air cavity 25 is formed in the valve body 30, the self-locking rod 22 is arranged in the valve body 30, the driving mechanism 20 drives the self-locking rod 22 to move relative to the valve body 30 to be matched with a locking inclined plane 243 to achieve upper limit of the lifting valve core 24, the inclined plane structure is high in matching stability, the inclined plane has guiding function, and the moving precision and stability of the whole structure are improved.
Preferably, the valve opening assembly 90 further includes a spring 21, the spring 21 is coaxially disposed with the output shaft of the driving mechanism 20, the spring 21 is disposed between the valve body 30 and the self-locking rod 22, the self-locking rod 22 is in a T-shaped structure, one end with a large diameter is connected with the output shaft of the driving mechanism 20, under the action of the spring 21, the self-locking rod 22 cooperates with the locking inclined plane 243 to realize the closed state of the whole structure, and when the valve opening is needed, the driving mechanism 20 acts to drive the self-locking rod 22 to move in a direction away from the locking inclined plane 243, so that the instant opening of the whole structure is realized, and the small-distance operation is convenient and fast and efficient due to the small-distance relative to the inner cavity proportion of the valve body 30, so that the quick starting of the large structure is realized.
Preferably, the driving mechanism 20 is pneumatic, hydraulic or mechanical, and can adopt a cylinder, a hydraulic cylinder or an electric push rod structure, and the driving mechanism 20 directly drives the self-locking rod 22 to move so as to realize the matching of the self-locking rod 22 and the poppet 24.
Preferably, the valve opening assembly 90 further comprises a valve body 30, a self-locking rod 22 and a driving mechanism 20, the valve body 30 is arranged right above the energy storage assembly 91, the lifting valve core 24 further comprises a valve plate 244, the valve plate 244 is arranged in the valve body 30 and moves up and down in a sealing mode relative to the valve body 30, a main body rod 241 is perpendicular to the valve plate 244, a sealed second air cavity 23 is formed between the upper end of the valve plate 244 and the valve body 30, a first air cavity 26 communicated with the second air cavity 23 is formed in the valve body 30, a sealed third air cavity 25 is formed between the lower end of the valve plate 244 and the valve body 30 and the energy storage assembly 91, a second air cavity 27 communicated with the third air cavity 25 is formed in the valve body 30, the self-locking rod is arranged in the valve body 30, and the driving mechanism 20 drives the self-locking rod to move relative to the valve body 30 and cooperate with the lifting valve core 24 to achieve upper limit of the lifting valve core 24.
In the actual use process, high-pressure nitrogen is firstly filled into the first air cavity 3 before working, hydraulic oil required by the movement of the driving cylinder is filled into the first oil cavity 5, hydraulic oil is filled into the second oil cavity 9 through the oil port 10, the high-speed rod 6 is completely retracted, the piston 4 is driven, the second air cavity 23 is filled with air through the first air port 26, the lifting valve core 24 is completely extended, the second cylinder barrel 8 of the driving cylinder 92 is disconnected from an oil way of the first oil cavity 5 in the energy storage assembly, the self-locking rod 22 is pushed out through the spring 21, locking is realized through the cooperation of the conical surface of the self-locking rod 22 and the locking surface 243 of the lifting valve core 24, the high-speed rod 6 is ready for being put in, then the high-pressure gas in the third air cavity 25 is rapidly expanded to push the lifting valve core 24 to rapidly move upwards, meanwhile, high-pressure gas in the first gas cavity 3 rapidly expands and pushes a piston 4 in the energy storage component to move downwards, high-pressure oil in the first oil cavity 5 pushes a high-speed rod 6 to move downwards rapidly, parameters such as pressure of an energy storage device, oil cavity and cylinder diameter and stroke of a high-speed cylinder are changed, the load can obtain extremely large kinetic energy (more than megajoules) in extremely short time (millisecond level), the highest load speed of proper mass can be more than 80m/s, the structure is used for reducing middle link interference and improving the response speed of a system, the product adopts an automatic control type mechanical lock rapid valve opening mechanism, a self-locking rod and a lifting valve core are locked by using a conical surface friction angle, the high-pressure gas is rapidly opened, and the unlocking time is shortened, so that the unlocking time can be shortened to about 1ms, and the reaction time is greatly shortened.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (9)
1. The gas-liquid acceleration hydraulic cylinder is characterized in that: the energy storage device comprises a valve opening assembly, an energy storage assembly and a driving cylinder which are arranged from top to bottom, wherein the driving cylinder comprises a high-speed rod, the output end of the high-speed rod is communicated with an external load, the energy storage assembly comprises a first driving cavity and a second driving cavity which are separated by a piston and are mutually independent, the second driving cavity is arranged at the lower end of the first driving cavity and drives the high-speed rod to move, the valve opening assembly comprises a lifting valve core, the lifting valve core moves up and down, and the lifting valve core penetrates through the piston to control the second driving cavity to be communicated with and disconnected from the high-speed rod;
The valve opening assembly further comprises a valve body, a self-locking rod and a driving mechanism, the valve body is arranged right above the energy storage assembly, the lifting valve core further comprises a valve plate, the valve plate is arranged in the valve body and moves up and down in a sealing mode relative to the valve body, the main body rod is perpendicular to the valve plate, a sealed second air cavity is formed between the upper end of the valve plate and the valve body, a first air cavity communicated with the second air cavity is formed in the valve body, a third air cavity communicated with the valve body and the energy storage assembly is formed in the lower end of the valve plate, a second air cavity communicated with the third air cavity is formed in the valve body, the self-locking rod is arranged in the valve body, and the driving mechanism drives the self-locking rod to move relative to the valve body and cooperate with the lifting valve core to achieve upper limit of the lifting valve core.
2. The gas-liquid accelerating hydraulic cylinder according to claim 1, characterized in that: the first driving cavity is a first air cavity, the second driving cavity is a first oil cavity, and the second driving cavity is arranged at the lower end of the first driving cavity and is parallel to the lower end of the first driving cavity.
3. The gas-liquid accelerating hydraulic cylinder according to claim 1, characterized in that: the energy storage assembly further comprises a cylinder body and a first cylinder barrel which form a closed cavity, the piston is arranged in the closed cavity formed by the cylinder body and the first cylinder barrel and is in sliding connection with the cylinder body and the first cylinder barrel, the lifting valve core is perpendicular to the piston, and the lifting valve core is in sealing fit with the piston and is in sliding connection with the piston up and down.
4. The gas-liquid accelerating hydraulic cylinder according to claim 1, characterized in that: the driving cylinder comprises a high-speed rod, a second cylinder barrel and a cylinder head, wherein the second cylinder barrel is vertically arranged at the lower end of the energy storage assembly, the cylinder head is arranged at the lower end of the second cylinder barrel and is in sealing arrangement with the lower end of the second cylinder barrel, the high-speed rod is arranged in the second cylinder barrel and is in up-down sealing sliding connection with the second cylinder barrel, the high-speed rod downwards penetrates through the cylinder head and then is connected with an external load, a second oil cavity is formed between the high-speed rod and the cylinder head, and an oil port communicated with the second oil cavity is formed in the cylinder head.
5. The gas-liquid accelerating hydraulic cylinder according to claim 4, wherein: a plurality of first sealing rings which are arranged in parallel are arranged between the upper end of the high-speed rod and the second cylinder barrel, and a plurality of second sealing rings which are arranged in parallel are arranged between the lower end of the high-speed rod and the cylinder head.
6. The gas-liquid accelerating hydraulic cylinder according to claim 4, wherein: the lifting valve core comprises a main body rod, a sealing disc and a locking inclined plane, wherein the sealing disc is arranged at the lower end of the main body rod, the locking inclined plane is arranged at the upper end of the main body rod, the locking inclined plane and the sealing disc are arranged at the upper end and the lower end of the piston, and the sealing disc moves downwards and is in sealing fit with the inner ring of the second cylinder barrel.
7. The gas-liquid accelerating hydraulic cylinder according to claim 4, wherein: the valve opening assembly further comprises a valve body, a self-locking rod and a driving mechanism, the valve body is arranged right above the energy storage assembly, the valve lifting valve core further comprises a valve plate, the valve plate is arranged in the valve body and moves up and down relative to the valve body in a sealing mode, the main body rod is perpendicular to the valve plate, a sealed second air cavity is formed between the upper end of the valve plate and the valve body, a first air cavity communicated with the second air cavity is formed in the valve body, a third air cavity communicated with the valve body and the energy storage assembly is formed in the lower end of the valve plate, a second air cavity communicated with the third air cavity is formed in the valve body, the self-locking rod is arranged in the valve body, and the driving mechanism drives the self-locking rod to move relative to the valve body and match with the locking inclined surface to achieve upper limit of the valve lifting core.
8. The gas-liquid accelerating hydraulic cylinder according to claim 7, characterized in that: the valve opening assembly further comprises a spring, the spring and the output shaft of the driving mechanism are coaxially arranged, and the spring is arranged between the valve body and the self-locking rod.
9. The gas-liquid accelerating hydraulic cylinder according to claim 7, characterized in that: the driving mechanism is pneumatic, hydraulic or mechanical.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205918665U (en) * | 2016-07-06 | 2017-02-01 | 天津优瑞纳斯液压机械有限公司 | High thrust high -speed hydraulic cylinder |
| CN106946435A (en) * | 2017-04-08 | 2017-07-14 | 饶宾期 | High throughput sewage sludge depth quantitative reduction method |
| CN209510776U (en) * | 2019-01-23 | 2019-10-18 | 中国人民解放军军事科学院国防工程研究院 | Gas-liquid boosting hydraulic cylinder |
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| DE102006001546A1 (en) * | 2005-02-10 | 2006-10-05 | Continental Teves Ag & Co. Ohg | Hydraulic brake for motor vehicle has brake housing with reservoir piston exposed to operating piston pressure |
| CN2925689Y (en) * | 2006-06-22 | 2007-07-25 | 夏德仕 | Electrohydraulic hammer against punch |
| CN102269153B (en) * | 2011-05-13 | 2015-05-20 | 浙江大学 | Constant power adjustment mechanism |
| CN103256273B (en) * | 2013-05-06 | 2015-10-07 | 牟安平 | Automatic linear double-acting cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205918665U (en) * | 2016-07-06 | 2017-02-01 | 天津优瑞纳斯液压机械有限公司 | High thrust high -speed hydraulic cylinder |
| CN106946435A (en) * | 2017-04-08 | 2017-07-14 | 饶宾期 | High throughput sewage sludge depth quantitative reduction method |
| CN209510776U (en) * | 2019-01-23 | 2019-10-18 | 中国人民解放军军事科学院国防工程研究院 | Gas-liquid boosting hydraulic cylinder |
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