CN109654086A - A kind of loaded hydraulic cylinder of high frequency - Google Patents
A kind of loaded hydraulic cylinder of high frequency Download PDFInfo
- Publication number
- CN109654086A CN109654086A CN201910002882.8A CN201910002882A CN109654086A CN 109654086 A CN109654086 A CN 109654086A CN 201910002882 A CN201910002882 A CN 201910002882A CN 109654086 A CN109654086 A CN 109654086A
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- piston rod
- check valve
- cylinder
- oil
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- 239000003921 oil Substances 0.000 claims abstract description 32
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims description 17
- 239000000872 buffer Substances 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000009527 percussion Methods 0.000 abstract description 19
- 238000013016 damping Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 230000033001 locomotion Effects 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 230000003139 buffering effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- 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
- F15B13/027—Check valves
-
- 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
- F15B15/1457—Piston rods
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Percussive Tools And Related Accessories (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of loaded hydraulic cylinders of high frequency, belong to hydraulic cylinder technical field, comprising: plug is rushed body, charge valve, piston rod, gas piston, cylinder body, piston, check valve, cylinder bottom and oil-filled plug screw；The cylinder bottom is fixed on one end of cylinder body, and the end opening of cylinder body is closed；The cooperation of the other end hole axle of piston rod and cylinder body；The closed end of piston rod, which is equipped with, is rushed body and charge valve, and the gas piston coaxial is mounted in the inner cavity of piston rod；Piston coaxial is mounted on the open end of piston rod, and the axially extending bore of piston is communicated with the inner cavity of piston rod；The check valve is mounted in the check valve mounting hole of piston, and when check valve is in close state, oil-through hole is closed；When check valve in the open state, hydraulic oil can enter rod chamber from rodless cavity by oil-through hole.The present invention is suitable for the measurement condition of high-frequency percussion product, and manufacture installation convenience, working service is simple, and the resistance to punching of damping works well, long service life.
Description
Technical field
The invention belongs to hydraulic cylinder technical fields, and in particular to a kind of loaded hydraulic cylinder of high frequency.
Background technique
The high-frequency percussions product such as hydraulic gate need to carry out impact property test verifying, even if using steel plate, rock,
For the adamants such as clump as loaded part, service life is also extremely limited；A kind of loaded examination of effective high frequency can be developed
Experiment device had not only met the test request of high-frequency percussion product, but also has guaranteed higher service life, just seemed very necessary.
Summary of the invention
In view of this, it is suitable for the measurement condition of high-frequency percussion product the present invention provides a kind of loaded hydraulic cylinder of high frequency,
Manufacture installation convenience, working service is simple, and the resistance to punching of damping works well, long service life.
The present invention is achieved through the following technical solutions:
A kind of loaded hydraulic cylinder of high frequency, comprising: plug is rushed body, charge valve, piston rod, gas piston, cylinder body, piston, list
To valve, cylinder bottom and oil-filled plug screw；
The cylinder body is the cylinder of both ends open, is machined with the oil gas mouth communicated with its inner cavity on cylinder body, pacifies in oil gas mouth
Equipped with plug, oil gas mouth is closed；
The cylinder bottom is fixed on one end of cylinder body, and the end opening of cylinder body is closed, and is machined on cylinder bottom and cylinder body
The hydraulic fluid port that inner cavity communicates is equipped with oil-filled plug screw on hydraulic fluid port, hydraulic fluid port is closed；
The piston rod is cylinder open at one end, closed at one end, the other end hole axle cooperation of piston rod and cylinder body；Piston
The closed end of bar stretches out in cylinder body, and open end is located in inner chamber of cylinder block；Piston rod can move repeatedly along the axial cylinder；Piston rod
Closed end, which is equipped with, is rushed body and charge valve, and charge valve is communicated by the aperture processed in piston rod with the inner cavity of piston rod；Institute
It states gas piston coaxial to be mounted in the inner cavity of piston rod, and the outer circumference surface of gas piston is in contact with the inner peripheral surface of piston rod,
Gas piston can be along piston rod to moving repeatedly；
Axially extending bore, more than one throttle orifice are machined on the piston, along its circumferentially distributed oil-through hole and along its week
To the check valve mounting hole of distribution；And oil-through hole is corresponding with check valve mounting hole communicates；Piston coaxial is mounted on opening for piston rod
Mouth end, and the axially extending bore of piston is communicated with the inner cavity of piston rod, the outer circumference surface of piston is in contact with the inner peripheral surface of cylinder body；
The inner cavity of cylinder body is divided into rodless cavity and rod chamber by piston, cavity and gas piston and work between the open end and cylinder bottom of piston rod
Cavity between the open end of stopper rod is rodless cavity, and the annular chamber between the outer circumference surface of piston rod and the inner peripheral surface of cylinder body is
Rod chamber；Cavity between gas piston and the closed end of piston rod is air cavity；And the hydraulic fluid port is communicated with rodless cavity, the oil gas
Mouth is communicated with rod chamber；The aperture is communicated with air cavity；
The check valve is mounted in the check valve mounting hole of piston, when check valve is in close state, by oil-through hole
Closing；When check valve in the open state, hydraulic oil can enter rod chamber from rodless cavity by oil-through hole.
It further, further include buffer body, the buffer body is ring structure, and is coaxially fixed on the end face of piston；
When piston rod moves to extreme position to the direction of cylinder bottom with piston, the left side of cylinder bottom is machined with and buffers
The groove of body cooperation, buffer body are matched with the groove.
Further, the inner face of the cylinder body is machined with step surface, and the left side of piston is machined with step surface, works as piston
Bar moves to extreme position with the direction of piston Xiang Shouchong body, and two step surfaces match.
Further, oil-through hole described in every two is a pair, corresponding with a check valve mounting hole to communicate.
Further, the check valve is mounted in the check valve mounting hole of piston by one-way valve seat, the check valve
For sphere, one-way valve seat is annular sleeve；When in sphere insertion annular sleeve, closed check valve；It is single when sphere leaves annular sleeve
It is opened to valve.
Further, the piston rod closed end is equipped with groove, and the body that rushed is mounted in the groove, by rush body by
Pressure surface is the arc surface of indent.
The utility model has the advantages that (1) present invention is equipped with gas piston in piston rod cavity, resistance is generated by the intracavitary gas of compressed gas
Power and the shock loading for bearing high-frequency percussion product, bearing capacity increase with the stroke of compression piston bar and are increased, and therefore, pass through work
The movement repeatedly of stopper rod and gas piston is realized to the resistance to punching of the damping of high-frequency percussion product, long service life.
(2) present invention is equipped with throttle orifice and check valve on piston, when so that the impact of high-frequency percussion product returning, piston rod
It is overhanging to generate biggish damping, the overhanging bounce of piston rod is effectively reduced, avoids having an impact high-frequency percussion product.
(3) every two oil-through hole of the present invention on piston is communicated with check valve mounting hole, makes list in the open state
Two oil-through holes will not be blocked to valve, it is therefore prevented that influence when check valve is opened to oil flow channel.
(4) present invention is equipped with throttling buffering in two extreme positions of piston rod movement, avoids the production of high-frequency percussion product
Raw instantaneous overload leads to the rigid impact of piston rod and cylinder bottom or cylinder body.
Detailed description of the invention
Fig. 1 is structure composition figure of the invention；
Fig. 2 is the A-A sectional view of Fig. 1；
Fig. 3 is the B-B sectional view of Fig. 1；
Wherein, 1- plug, 2- are rushed body, 3- charge valve, 4- piston rod, 5- aperture, 6- gas piston, 7- cylinder body, 8- throttling
Hole, 9- piston, 10- oil-through hole, 11- check valve, 12- one-way valve seat, 13- oil gas mouth, 14- buffer body, 15- cylinder bottom, 16- are oil-filled
Plug screw, 17- hydraulic fluid port.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
A kind of loaded hydraulic cylinder of high frequency is present embodiments provided, referring to attached drawing 1-3, comprising: plug 1 is rushed body 2, inflation
Valve 3, piston rod 4, gas piston 6, cylinder body 7, piston 9, check valve 11, one-way valve seat 12, buffer body 14, cylinder bottom 15 and oil-filled plug screw
16；
The cylinder body 7 is the cylinder of both ends open, is machined with the oil gas mouth 13 communicated with its inner cavity, oil gas mouth on cylinder body 7
Plug 1 is installed on 13, oil gas mouth 13 is closed；
The cylinder bottom 15 is fixed by screws in one end of cylinder body 7, and the end opening of cylinder body 7 is closed, and cylinder bottom 15
On be machined with the hydraulic fluid port 17 communicated with 7 inner cavity of cylinder body, oil-filled plug screw 16 is installed on hydraulic fluid port 17, hydraulic fluid port 17 is closed；
The piston rod 4 is cylinder open at one end, closed at one end, and piston rod 4 and the other end hole axle of cylinder body 7 cooperate,
And mating surface is equipped with sealing ring；The closed end of piston rod 4 stretches out in cylinder body 7, and open end is located in 7 inner cavity of cylinder body；Piston rod 4
It can axially be moved repeatedly along cylinder body 7；4 closed end of piston rod is equipped with groove, is equipped in groove and is rushed body 2, by the compression for rushing body 2
Face is the arc surface of indent；The closed end of piston rod 4 is also equipped with charge valve 3, and charge valve 3 is small by what is processed in piston rod 4
Hole 5 is communicated with the inner cavity of piston rod 4；The gas piston 6 is coaxially mounted in the inner cavity of piston rod 4, and the excircle of gas piston 6
Face is in contact with the inner peripheral surface of piston rod 4, and contact surface is equipped with sealing ring；Gas piston 6 can axially be transported repeatedly along piston rod 4
It is dynamic；
Axially extending bore, two throttle orifices 8 are machined on the piston 9, along its circumferentially distributed oil-through hole 10 and along its week
To the check valve mounting hole of distribution；Oil-through hole 10 described in every two is a pair, corresponding with a check valve mounting hole to communicate；Piston
9 are coaxially mounted to the open end of piston rod 4, and the axially extending bore of piston 9 is communicated with the inner cavity of piston rod 4, the excircle of piston 9
Face is in contact with the inner peripheral surface of cylinder body 7, and contact surface is equipped with sealing ring；The inner cavity of cylinder body 7 is divided into rodless cavity and had by piston 9
Rod cavity, the cavity between cavity and gas piston 6 and the open end of piston rod 4 between the open end and cylinder bottom 15 of piston rod 4 are
Rodless cavity, the annular chamber between the outer circumference surface of piston rod 4 and the inner peripheral surface of cylinder body 7 are rod chamber；Gas piston 6 and piston rod
Cavity between 4 closed end is air cavity；And the hydraulic fluid port 17 is communicated with rodless cavity, the oil gas mouth 13 is communicated with rod chamber；
The aperture 5 is communicated with air cavity；
The check valve 11 is mounted in the check valve mounting hole of piston 9 by one-way valve seat 12, wherein the check valve
11 be sphere, and one-way valve seat 12 is annular sleeve；When in sphere insertion annular sleeve, check valve 11 is closed, and then by oil-through hole 10
Closing；When sphere leaves annular sleeve, check valve 11 is opened, and hydraulic oil, which can be entered by oil-through hole 10 from rodless cavity, bar
Chamber；
The buffer body 14 is ring structure, and is coaxially fixed on the end face of piston 9；When piston rod 4 with piston 9 to cylinder
The direction at bottom 15 moves to extreme position, i.e. when the left side of the right side of piston 9 and cylinder bottom 15 is inconsistent, the left end of cylinder bottom 15
Face is machined with the groove cooperated with buffer body 14, and buffer body 14 is matched with the groove, and the oil liquid of cylinder bottom is by groove mating surface
Closing, the annular gap that can only be cooperated by groove are discharged, and realize the throttling buffering of buffer body 14 and cylinder bottom 15；When piston rod 4
Direction with 9 Xiang Shouchong body 2 of piston moves to extreme position, i.e. the inner face of the left side of piston 9 and cylinder body 7 reaches setting
When gap (gap is for communicating oil-through hole 10 with oil gas mouth 13 always), the inner face of cylinder body 7 is machined with step surface, living
The left side of plug 9 is machined with step surface, and two step surfaces match, and the oil liquid of 9 left chamber of piston can only be passed through by cooperation face closure
The annular gap of cooperation is discharged, and realizes the throttling buffering of piston 9 and cylinder body 7.
Working principle: before carrying out loaded work using the hydraulic cylinder, oil-filled plug screw 16 and plug 1 are removed, opening is filled
Air valve 3 is filled with hydraulic oil into rodless cavity by hydraulic fluid port 17, hydraulic oil in rodless cavity push the gentle piston 6 of piston rod 4 to by
The direction movement of body 2 is rushed, check valve 11 is in the open state at this time；Meanwhile the air in air cavity is discharged by charge valve 3, is had
Air in rod cavity is discharged by oil gas mouth 13；Until piston rod 4 is fully extended, (i.e. piston rod 4 is with 9 Xiang Shouchong body 2 of piston
Direction move to extreme position) and after gas piston 6 is in contact with the closed end of piston rod 4, close hydraulic fluid port with oil-filled plug screw 16
17；Then, drying nitrogen is filled with to air cavity by charge valve 3, pushes opening end motion of the gas piston 6 to piston rod 4；Due to gas
Piston 6 compresses the hydraulic oil in rodless cavity, and the hydraulic oil in rodless cavity pushes check valve 11 to leave one-way valve seat 12, so that unidirectionally
Valve 11 is opened, and the hydraulic oil in rodless cavity enters rod chamber by oil-through hole 10, throttle orifice 8, is flowed at oil gas mouth 13, and by oil
Hydraulic cylinder is discharged in port 13；Until gas piston 6 and the piston 9 that is mounted on 4 open end of piston rod are inconsistent, and reach setting for nitrogen
When constant-pressure, stop inflated with nitrogen, and close oil gas mouth 13 with plug 1；At this point, piston rod 4 is still in fully extended state,
Original state when loaded work is carried out for hydraulic cylinder；
When hydraulic cylinder carries out loaded work, it will be in the horizontal or vertical fixation of hydraulic cylinder of original state, by the height of subject
Frequency impact product is mounted on by the interior concaved circular cambered surface for rushing body 2；
When high-frequency percussion product impact hydraulic cylinder, compression piston bar 4, i.e. promotion piston rod 4 is moved to the direction of cylinder bottom 15,
Piston rod 4 compresses the hydraulic oil in rodless cavity, and the hydraulic fluid pressure in rodless cavity becomes larger, and check valve 11 is pushed to leave one-way valve seat
12, so that check valve 11 is opened, the hydraulic oil in rodless cavity flows rapidly into rod chamber by oil-through hole 10 and throttle orifice 8, into one
Step pushes piston rod 4 to move to the direction of cylinder bottom 15；Since the hydraulic oil volume in rodless cavity constantly reduces, the liquid in rodless cavity
Pressure oil pushes the direction movement of 6 Xiang Shouchong body 2 of gas piston, and to increase the hydraulic oil volume in rodless cavity, the movement of gas piston 6 can be pressed
Nitrogen in contracting air cavity increases the nitrogen pressure in air cavity；The resistance that compressed nitrogen generates is used to bear high-frequency percussion product
Shock loading；
High-frequency percussion product increases with the stroke for pushing piston rod 4 to move, and the nitrogen resistance in the air cavity being subject to is not yet
Disconnected to increase, when the impact force that high-frequency percussion product pushes piston rod 4 to move and the nitrogen resistance balance being subject to, high-frequency percussion is produced
The ballistic motions of product stops, i.e. no longer compression piston bar 4；
When the impact of high-frequency percussion product returns, compression external force discharges, and the high pressure nitrogen in air cavity pushes gas piston 6 to cylinder bottom
15 direction movement makes piston rod 4 generate biggish overhanging screen resilience, i.e. the direction movement of promotion 4 Xiang Shouchong body 2 of piston rod；
Meanwhile the direction movement of 4 Xiang Shouchong body 2 of piston rod, the hydraulic oil in rod chamber is compressed, due to the hydraulic fluid pressure in rodless cavity
Become larger, check valve 11 is pushed to be nested in one-way valve seat 12, so that check valve 11 is closed, the hydraulic oil in rod chamber can only pass through
Throttle orifice 8 flows into rodless cavity at a slow speed, makes piston rod 4 again by biggish overhanging damping, i.e. prevention 4 Xiang Shouchong body 2 of piston rod
Direction movement；In this way, not only can guarantee that piston rod 4 was quickly returned with high-frequency percussion product, but also it can control piston rod 4 and high frequency rushed
The bounce for hitting product avoids having an impact high-frequency percussion product.
Wherein, if the instantaneous impact of high-frequency percussion product is more than setting value, compression piston bar drives piston rod 4 and lives
Plug 9 moves to extreme position to the direction of cylinder bottom 15, and buffer body 14 is matched with the groove of the left side of cylinder bottom 15, realizes piston
9 with the throttling buffering of cylinder bottom 15；If the temporary impact return force of high-frequency percussion product is more than setting value, piston rod 4 is pulled out, makes to live
Stopper rod 4 moves to extreme position with the direction of 9 Xiang Shouchong body 2 of piston, and the step surface of the left side of piston 9 is interior with cylinder body 7
The step surface of end face matches, and realizes the throttling buffering of piston 9 and cylinder body 7；It can be avoided piston rod 4 and cylinder bottom 15 or cylinder body 7
Hardness hits and generates destruction, and then adversely affects to the loaded hydraulic cylinder of high frequency.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of loaded hydraulic cylinder of high frequency characterized by comprising plug (1) is rushed body (2), charge valve (3), piston rod
(4), gas piston (6), cylinder body (7), piston (9), check valve (11), cylinder bottom (15) and oil-filled plug screw (16)；
The cylinder body (7) is the cylinder of both ends open, is machined with the oil gas mouth (13) communicated with its inner cavity, oil gas on cylinder body (7)
Plug (1) is installed on mouth (13), oil gas mouth (13) are closed；
The cylinder bottom (15) is fixed on one end of cylinder body (7), and the end opening of cylinder body (7) is closed, and adds on cylinder bottom (15)
Work has the hydraulic fluid port (17) communicated with cylinder body (7) inner cavity, is equipped with oil-filled plug screw (16) on hydraulic fluid port (17), and hydraulic fluid port (17) are closed；
The piston rod (4) is cylinder open at one end, closed at one end, and piston rod (4) and the other end hole axle of cylinder body (7) are matched
It closes；The closed end of piston rod (4) stretches out in cylinder body (7), and open end is located in cylinder body (7) inner cavity；Piston rod (4) can be along cylinder body
(7) axial to move repeatedly；Piston rod (4) closed end, which is equipped with, is rushed body (2) and charge valve (3), and charge valve (3) passes through piston rod
(4) aperture (5) processed in is communicated with the inner cavity of piston rod (4)；The gas piston (6) is coaxially mounted to the interior of piston rod (4)
In chamber, and the outer circumference surface of gas piston (6) is in contact with the inner peripheral surface of piston rod (4), and gas piston (6) can be along piston rod (4)
It is axial to move repeatedly；
Axially extending bore, more than one throttle orifice (8) are machined on the piston (9), along its circumferentially distributed oil-through hole (10) and
The check valve mounting hole circumferentially distributed along its；And oil-through hole (10) is corresponding with check valve mounting hole communicates；Piston (9) is co-axially mounted
In the open end of piston rod (4), and the axially extending bore of piston (9) is communicated with the inner cavity of piston rod (4), the excircle of piston (9)
Face is in contact with the inner peripheral surface of cylinder body (7)；The inner cavity of cylinder body (7) is divided into rodless cavity and rod chamber, piston rod by piston (9)
(4) cavity between cavity and gas piston (6) and the open end of piston rod (4) between open end and cylinder bottom (15) is no bar
Chamber, the annular chamber between the outer circumference surface of piston rod (4) and the inner peripheral surface of cylinder body (7) are rod chamber；Gas piston (6) and piston
Cavity between the closed end of bar (4) is air cavity；And the hydraulic fluid port (17) communicates with rodless cavity, the oil gas mouth (13) and has bar
Chamber communicates；The aperture (5) communicates with air cavity；
The check valve (11) is mounted in the check valve mounting hole of piston (9), will when check valve (11) is in close state
Oil-through hole (10) closing；When check valve (11) in the open state, hydraulic oil can by oil-through hole (10) from rodless cavity into
Enter rod chamber.
2. a kind of loaded hydraulic cylinder of high frequency as described in claim 1, which is characterized in that it further include buffer body (14), it is described slow
Rushing body (14) is ring structure, and is coaxially fixed on the end face of piston (9)；
When piston rod (4) moves to extreme position to the direction of cylinder bottom (15) with piston (9), the left side of cylinder bottom (15) adds
Work has the groove with buffer body (14) cooperation, and buffer body (14) is matched with the groove.
3. a kind of loaded hydraulic cylinder of high frequency as described in claim 1, which is characterized in that the inner face of the cylinder body (7) is processed
There is step surface, the left side of piston (9) is machined with step surface, when direction of the piston rod (4) with piston (9) Xiang Shouchong body (2)
Extreme position is moved to, two step surfaces match.
4. a kind of loaded hydraulic cylinder of high frequency as described in claim 1, which is characterized in that oil-through hole described in every two (10) is one
It is right, it is corresponding with a check valve mounting hole to communicate.
5. a kind of loaded hydraulic cylinder of high frequency as claimed in claim 4, which is characterized in that the check valve (11) passes through check valve
Seat (12) is mounted in the check valve mounting hole of piston (9), and the check valve (11) is sphere, and one-way valve seat (12) is annular
Set；When in sphere insertion annular sleeve, check valve (11) is closed；When sphere leaves annular sleeve, check valve (11) is opened.
6. a kind of loaded hydraulic cylinder of high frequency as described in claim 1, which is characterized in that piston rod (4) closed end is equipped with
Groove, the body (2) that rushed are mounted in the groove, are the arc surface of indent by the compression face for rushing body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002882.8A CN109654086B (en) | 2019-01-02 | 2019-01-02 | High-frequency loaded hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002882.8A CN109654086B (en) | 2019-01-02 | 2019-01-02 | High-frequency loaded hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109654086A true CN109654086A (en) | 2019-04-19 |
| CN109654086B CN109654086B (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910002882.8A Active CN109654086B (en) | 2019-01-02 | 2019-01-02 | High-frequency loaded hydraulic cylinder |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410444A (en) * | 2019-07-22 | 2019-11-05 | 中国铁建重工集团股份有限公司 | Active impact receiving buffer device and impact equipment |
| CN110864026A (en) * | 2019-11-21 | 2020-03-06 | 衡阳市林肯液压设备有限公司 | Buffering hydraulic cylinder with good sealing performance |
| CN111721607A (en) * | 2020-07-01 | 2020-09-29 | 湖南农业大学 | Oil-gas mixing device capable of simulating rocks with different hardness |
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| CN114427557A (en) * | 2022-01-26 | 2022-05-03 | 中国铁建重工集团股份有限公司 | Vibration absorber |
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