CN106286464B - A kind of end mechanical self-locking hydraulic cylinder of band buffering - Google Patents
A kind of end mechanical self-locking hydraulic cylinder of band buffering Download PDFInfo
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- CN106286464B CN106286464B CN201610800738.5A CN201610800738A CN106286464B CN 106286464 B CN106286464 B CN 106286464B CN 201610800738 A CN201610800738 A CN 201610800738A CN 106286464 B CN106286464 B CN 106286464B
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- cylinder
- hydraulic cylinder
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- locking
- latch segment
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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
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- 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
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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
-
- 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
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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-Damping Devices (AREA)
Abstract
The present invention provides a kind of end mechanical self-locking hydraulic cylinder of band buffering, opened up on the inwall of cylinder barrel fluted, cylindrical hole is offered on the piston, latch segment is installed in cylindrical hole, latch segment and fit depressions are used for the self-locking and unblock for realizing hydraulic cylinder, sealing ring is provided between latch segment and cylindrical hole inwall, hydraulic oil channel is provided with the piston, hydraulic oil reaches the check valve being arranged among piston by the passage, cylindrical hole connects with check valve, one-way throttle valve is installed on the cylinder bottom, when hydraulic cylinder is retracted close to cylinder bottom, realize the pooling feature of hydraulic cylinder, the hydraulic cylinder of the present invention can not only realize the reciprocating motion of Normal hydraulic cylinder, but also the function of the self-locking of retraction end of travel and retraction end of travel buffering can be realized.
Description
Technical field
The invention belongs to technical field of hydraulic pressure, more particularly, to a kind of end mechanical self-locking hydraulic cylinder of band buffering.
Background technology
Hydraulic cylinder be hydraulic energy is changed into mechanical energy, the hydraulic pressure that does straight reciprocating motion (or oscillating motion) performs member
Part.During with it to realize reciprocating motion, deceleration device can be removed from, and do not have drive gap, stable movement, in various hydraulic pressure systems
It is used widely in system.
According to job requirement, it is sometimes desirable to workpiece after a certain position is moved to or workpiece be stopped after in certain time
Holding position is constant, in order to prevent workpiece to be subjected to displacement under other power effect such as external force, gravity, now needs hydraulic cylinder to lock
Tightly.The mode that the self-locking of hydraulic cylinder at present relies primarily on closure pressure oil is realized, but this locking mode hydraulic oil easily lets out
Reveal, " underbalance effect " and " soft leg phenomenon " can occur after hydraulic fluid leak, although being directed to this phenomenon, done many improvement sides
Case, but do not solve the above problems fundamentally.In order to realize the self-locking of hydraulic cylinder, hydraulic lock can also be used, still
There is leakage problem in hydraulic lock, occur that self-locking precision is not high and workpiece offset phenomena after leakage in auto-lock process, and oil is occurring
During the failure of road, precision and reliability just can not more ensure, so hydraulic lock can not realize the self-locking of hydraulic cylinder for a long time；And
Hydraulic lock is often required for multiple auxiliary element collective effects such as check valve, reversal valve to realize the self-locking of hydraulic cylinder, and this is not only
Make self-locking cost high, more spaces are occupied when also making to realize self-locking, while oil circuit increases, the possibility for making to leak increases
Add, maintenance and use are made troubles.
The content of the invention
Patent of the present invention provides a kind of end mechanical self-locking hydraulic cylinder of band buffering, and the hydraulic cylinder can not only be realized commonly
The reciprocating motion of hydraulic cylinder, but also the function of the self-locking of retraction end of travel and retraction end of travel buffering can be realized.
Technical scheme：A kind of end mechanical self-locking hydraulic cylinder of band buffering, including base, it is provided with base
Cylinder barrel, the tail end of cylinder barrel are provided with cylinder bottom, and the front end of cylinder barrel is provided with cylinder head, and base, cylinder bottom, cylinder barrel and cylinder head are assembled into liquid
Cylinder pressure cylinder body, is provided with piston in cylinder barrel close to cylinder bottom, and the piston rod of cylinder head, piston rod connection are extended in the anterior connection of piston
Suspension ring, the tail end of the cylinder barrel offer tail end hydraulic fluid port, and the front end of cylinder barrel offers front end hydraulic fluid port, use is offered on the cylinder head
It is fluted in being opened up on the discharge opening that the water for entering hydraulic cylinder is discharged to hydraulic cylinder, the inwall of cylinder barrel, offered on the piston
Cylindrical hole, latch segment is provided with cylindrical hole, and latch segment and fit depressions are used for the self-locking and unblock for realizing hydraulic cylinder, locking
Sealing ring is provided between block and cylindrical hole inwall, hydraulic oil channel is provided with the piston, hydraulic oil is reached by the passage
The check valve being arranged among piston, cylindrical hole connect with check valve, one-way throttle valve are provided with the cylinder bottom, in hydraulic cylinder
When retracting close to cylinder bottom, the pooling feature of hydraulic cylinder is realized.
The type circle of cylinder head 0 that medium inside and outside hydraulic cylinder is separated is housed, between cylinder bottom and cylinder barrel between the cylinder head and cylinder barrel
Equipped with the type circle of cylinder bottom 0 for separating medium inside and outside hydraulic cylinder.
Sealed between the cylinder head and piston rod equipped with bar, prevent hydraulic fluid leak and introduced contaminants from entering hydraulic cylinder.
Piston guide band is housed between the piston and cylinder barrel, is oriented between the piston rod and cylinder head equipped with piston rod
Band.
The latch segment lower end is cylindrical structural, and in the cylindrical hole opened up on piston, it is in 10 ° that latch segment upper end, which is,
The arcuate structure of~80 ° of radians.
The latch segment is provided with 2~6,2~6 latch segments be evenly distributed on piston circumferentially by making hydraulic cylinder
Reliable self-locking and uniform force.
There is bit copper the upper end of the latch segment, to increase the wearability of latch segment.
Locking spring, locking spring one end and the contact of cylindrical hole bottom are housed on the lower end cylindrical structural of the latch segment
The other end and latch segment contact, the spring force of locking spring make latch segment enter groove, and in unblock, locking spring plays buffering
Effect, prevents latch segment from quickly exiting groove and being hit with piston.
The check valve includes push rod spring, push rod, poppet valve core, poppet valve core spring and conical valve base, and push rod is arranged on cone valve
In seat, the end thereof contacts cylinder bottom of push rod, the tail end of another end in contact poppet valve core of push rod, the front end of poppet valve core contacts hydraulic oil and led to
Road junction, has been provided with the push rod spring of cushioning effect between push rod and piston, the front end of poppet valve core has been provided with cushioning effect
Poppet valve core spring, push rod spring and poppet valve core spring prevent that push rod and poppet valve core (hit with piston when hydraulic cylinder from unlocking.
The suspension ring and piston rod are connected through a screw thread, and suspension ring, which are used to connect, to be loaded.
The technique effect of the present invention：Self-locking and the pooling feature of hydraulic cylinder are realized by mechanical structure.Piston is in hydraulic oil
In the presence of retract, when hydraulic cylinder piston is being moved in the presence of pressure oil close to cylinder bottoms of hydraulic cylinders, push rod starts and liquid
Cylinder pressure cylinder bottom contacts, and promotes poppet valve core, and then opens check valve, and pressure oil enters latch segment lower end by check valve, locks
Block enters groove under the collective effect of pressure oil pressure and spring force, realizes the self-locking of hydraulic cylinder.Before hydraulic cylinder stretching,
Pressure oil is entered at the top of latch segment by one-way throttle valve, and under pressure oil effect, latch segment exits groove, realizes hydraulic cylinder
Unblock.During hydraulic cylinder retraction, when piston is not close to cylinder bottoms of hydraulic cylinders, low pressure oil can be directly direct by hydraulic fluid port
, can also be by entering return line through hydraulic fluid port again after one-way throttle valve, when piston is close to cylinder bottoms of hydraulic cylinders into return line
When, low pressure oil can only be by flowing into return line after one-way throttle valve through hydraulic fluid port；Pass through the aperture of check valve in one-way throttle valve
The movement velocity of piston can be controlled well, and then realize buffering when hydraulic cylinder is retracted.
Brief description of the drawings
Fig. 1 is the structural representation of hydraulic cylinder in one embodiment of the invention；
Fig. 2 is locking block structure schematic diagram in one embodiment of the invention；
Fig. 3 is locking mechanism schematic diagram in one embodiment of the invention；
Fig. 4 is auto-lock process schematic diagram in one embodiment of the invention；
Fig. 5 is releasing process schematic diagram in one embodiment of the invention；
Fig. 6 is buffering course schematic diagram in one embodiment of the invention.
Label represents respectively in figure：1- bases, 2- cylinder bottoms, 3- piston guide bands, the type circle of 4- cylinder heads 0,5- piston rods are oriented to
Band, 6- bars envelope, 7- piston rods, 8- tail end hydraulic fluid ports, 9- cylinder barrels, 10- pistons, 11- front ends hydraulic fluid port, 12- discharge openings, 13- cylinder heads,
14- suspension ring, 15- latch segments, 16- sealing rings, 17- locking springs, the type circle of 18- cylinder bottoms 0,19- one-way throttle valves, 20- push rod bullets
Spring, 21- push rods, 22- poppet valve cores, 23- poppet valve core springs, 24- conical valve bases, 25- grooves, 26- cylindrical holes, 27- check valves.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings：
As shown in Fig. 1-3, a kind of end mechanical self-locking hydraulic cylinder of band buffering, including base 1, cylinder is installed on base 1
Cylinder 9, the tail end of cylinder barrel 9 is provided with cylinder bottom 2, and the front end of cylinder barrel 9 is provided with cylinder head 13, base 1, cylinder bottom 2, cylinder barrel 9 and cylinder head
13 are assembled into hydraulic cylinder body, are provided with piston 10 in cylinder barrel 9 at cylinder bottom 2, and cylinder head is extended in the anterior connection of piston 10
13 piston rod 7, piston rod 7 connect suspension ring 14, and the tail end of the cylinder barrel 9 offers tail end hydraulic fluid port 8, and the front end of cylinder barrel 9 opens up
There is front end hydraulic fluid port 11, the discharge opening 12 for the water for entering hydraulic cylinder to be discharged to hydraulic cylinder, cylinder barrel 9 are offered on the cylinder head 13
Inwall on open up fluted 25, cylindrical hole 26 is offered on the piston 10, latch segment 15 is installed in cylindrical hole 26, lock
Block 15 and groove 25 are engaged self-locking and unblock for realizing hydraulic cylinder, are provided between latch segment 15 and the inwall of cylindrical hole 26
Sealing ring 16, the effect of sealing ring 16 are that the height for preventing piston both ends presses oil connection, and hydraulic oil channel is provided with the piston 10,
Hydraulic oil reaches the check valve 27 being arranged among piston 10 by the passage, and cylindrical hole 26 connects with check valve 27.
The tail end of the cylinder barrel 9 offers tail end hydraulic fluid port 8, and the front end of cylinder barrel 9 offers front end hydraulic fluid port 11, for hydraulic oil
Into hydraulic cylinder and low pressure oil discharge hydraulic cylinder.
Equipped with the type circle 4 of cylinder head 0 that separates medium inside and outside hydraulic cylinder between cylinder head 13 and cylinder barrel 9, cylinder bottom 2 and cylinder barrel 9 it
Between equipped with the type circle 18 of cylinder bottom 0 that separates medium inside and outside hydraulic cylinder, equipped with bar envelope 6 between the cylinder head 13 and piston rod 7, prevent
Hydraulic fluid leak and introduced contaminants enter hydraulic cylinder.
Piston guide band 3 is housed between piston 10 and cylinder barrel 9, led between the piston rod 7 and cylinder head 13 equipped with piston rod
To band 5.
The lower end of latch segment 15 is cylindrical structural, and in the cylindrical hole 26 opened up on piston 10, the upper end of latch segment 15 is
In the arcuate structure of 10 °~80 ° radians.
Latch segment 15 is provided with 2~6,2~6 latch segments 15 be evenly distributed on piston 10 circumferentially by making hydraulic pressure
The reliable self-locking of cylinder and uniform force.
There is bit copper the upper end of latch segment 15, to increase the wearability of latch segment 15.
Locking spring 17, the one end of locking spring 17 and the bottom of cylindrical hole 26 are housed on the lower end cylindrical structural of latch segment 15
The contact other end and latch segment 15 contact, and the spring force of locking spring 17 makes latch segment 15 enter groove 25, in unblock, locking
Spring 17 plays cushioning effect, prevents latch segment 15 from quickly exiting groove 25 and being hit with piston 10.
One-way throttle valve 19 is housed on cylinder bottom 2, one-way throttle valve 19 is opened when piston 10 stretches out, and piston is unidirectional when retracting
Choke valve 19 is closed, and the pooling feature of hydraulic cylinder is realized by one-way throttle valve 19；
Check valve 27 includes push rod spring 20, push rod 21, poppet valve core 22, poppet valve core spring 23 and conical valve base 24, push rod 21
In conical valve base 24, the end thereof contacts cylinder bottom 2 of push rod 21, the tail end of another end in contact poppet valve core 22 of push rod 21, cone valve
The front end contact hydraulic oil channel mouth of core 22, has been provided with the push rod spring 20 of cushioning effect, has bored between push rod 21 and piston 10
The front end of valve element 22 has been provided with the poppet valve core spring 23 of cushioning effect, and push rod spring 20 and poppet valve core spring 23 prevent hydraulic cylinder
Push rod 21 and poppet valve core 22 hit with piston 10 during unblock.
The keying of check valve 27 is controlled by the relative position of push rod 21 and cylinder bottom 2, i.e. push rod 21 and cylinder bottom 2 contacts
When, check valve 27 is opened, and when push rod 21 and the separation of cylinder bottom 2, check valve 27 is closed.
Suspension ring 14 and piston rod 7 are connected through a screw thread, the connection load of suspension ring 14.
Such as Fig. 4, during hydraulic cylinder retraction, when hydraulic cylinder piston is moved in the presence of pressure oil close to hydraulic cylinder
During cylinder bottom, push rod start with cylinder bottoms of hydraulic cylinders contact, due to base fix and piston driving push rod to hydraulic cylinder base direction transport
Dynamic, push rod promotes poppet valve core to be moved to away from base direction in the presence of cylinder bottom thrust, opens check valve, and pressure oil passes through list
Reach latch segment lower end to valve, latch segment enters groove under the collective effect of pressure oil pressure and locking spring elastic force, realizes
The self-locking of hydraulic cylinder.
Such as Fig. 5, before hydraulic cylinder stretching, pressure oil reaches latch segment upper end by one-way throttle valve, and pressure oil is to locking
Block applies a power in opposite direction with locking spring elastic force, and under the effect of pressure oil pressure, locking spring is compressed, latch segment
Groove is exited, realizes the unblock of hydraulic cylinder, after latch segment exits groove, piston setting in motion in the presence of pressure oil, i.e. liquid
Cylinder pressure starts to stretch out.
Hydraulic cylinder retract or stretch out and push rod not in contact with cylinder bottom during, latch segment is close to hydraulic cylinder internal face,
Under push rod pressure and the effect of push rod spring elastic force, poppet valve core is close to conical valve base, makes closed check valve.
As Fig. 6 hydraulic cylinder retraction during, when piston is not close to cylinder bottom, low pressure oil directly can directly be entered by hydraulic fluid port
Enter return line, can also be a part of low when piston is close to cylinder bottom by entering return line through hydraulic fluid port after one-way throttle valve
Force feed can only be by flowing into return line after one-way throttle valve through hydraulic fluid port；The area of restriction can be adjusted in control one-way throttle valve
Flow of the low pressure oil by one-way throttle valve is saved, and then controls the movement velocity of piston, realizes buffering when hydraulic cylinder is retracted.
Locking spring is housed in latch segment lower end, when its effect is that latch segment moves to groove location on the one hand, spring force
Latch segment can be made to enter groove；On the other hand it is to avoid during hydraulic cylinder self locking, the pressure oil pressure of latch segment lower end
When relatively low, latch segment automatically exits groove, and when preventing hydraulic cylinder from self-locking and preventing that hydraulic cylinder from unlocking, latch segment quickly moves back
Go out groove and piston hits.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (10)
1. a kind of end mechanical self-locking hydraulic cylinder of band buffering, including base (1), cylinder barrel (9), cylinder barrel are installed on base (1)
(9) tail end is provided with cylinder bottom (2), and the front end of cylinder barrel (9) is provided with cylinder head (13), base (1), cylinder bottom (2), cylinder barrel (9) with
And cylinder head (13) is assembled into hydraulic cylinder body, cylinder bottom (2) place is provided with piston (10) in cylinder barrel (9), before piston (10)
Portion connects the piston rod (7) for extending cylinder head (13), piston rod (7) connection suspension ring (14), it is characterised in that：The cylinder barrel (9)
Tail end offer tail end hydraulic fluid port (8), the front end of cylinder barrel (9) offers front end hydraulic fluid port (11), offered on the cylinder head (13)
For the water for entering hydraulic cylinder to be discharged to the discharge opening (12) of hydraulic cylinder, opened up fluted (25) on the inwall of cylinder barrel (9), it is described
Cylindrical hole (26) is offered on piston (10), latch segment (15), latch segment (15) and groove (25) are installed in cylindrical hole (26)
The self-locking and unblock for realizing hydraulic cylinder are engaged, sealing ring is provided between latch segment (15) and cylindrical hole (26) inwall
(16) hydraulic oil channel, is provided with the piston (10), hydraulic oil reaches the list being arranged among piston (10) by the passage
To valve (27), cylindrical hole (26) connects with check valve (27), one-way throttle valve (19) is provided with the cylinder bottom (2), in hydraulic pressure
When cylinder is retracted close to cylinder bottom (2), the pooling feature of hydraulic cylinder is realized.
A kind of 2. end mechanical self-locking hydraulic cylinder of band buffering according to claim 1, it is characterised in that：The cylinder head
(13) the type circle (4) of cylinder head 0 for separating medium inside and outside hydraulic cylinder is housed between cylinder barrel (9), between cylinder bottom (2) and cylinder barrel (9)
Equipped with the type circle (18) of cylinder bottom 0 for separating medium inside and outside hydraulic cylinder.
A kind of 3. end mechanical self-locking hydraulic cylinder of band buffering according to claim 1, it is characterised in that：The cylinder head
(13) prevent hydraulic fluid leak and introduced contaminants from entering hydraulic cylinder equipped with bar envelope (6) between piston rod (7).
A kind of 4. end mechanical self-locking hydraulic cylinder of band buffering according to claim 1, it is characterised in that：The piston
(10) piston guide band (3) is housed between cylinder barrel (9), is oriented between the piston rod (7) and cylinder head (13) equipped with piston rod
Band (5).
A kind of 5. end mechanical self-locking hydraulic cylinder of band buffering according to claim 1, it is characterised in that：The latch segment
(15) lower end is cylindrical structural, in the cylindrical hole (26) opened up on piston (10), latch segment (15) upper end be in 10 °~
The arcuate structure of 80 ° of radians.
A kind of 6. end mechanical self-locking hydraulic cylinder of band buffering according to claim 5, it is characterised in that：The latch segment
(15) be provided with 2~6,2~6 latch segments (15) be evenly distributed on piston (10) circumferentially by make hydraulic cylinder reliably from
Lock and uniform force.
A kind of 7. end mechanical self-locking hydraulic cylinder of band buffering according to claim 6, it is characterised in that：The latch segment
(15) there is bit copper upper end, to increase the wearability of latch segment (15).
A kind of 8. end mechanical self-locking hydraulic cylinder of band buffering according to claim 5 or 6 or 7, it is characterised in that：It is described
Locking spring (17), locking spring (17) one end and cylindrical hole (26) bottom are housed on the lower end cylindrical structural of latch segment (15)
The other end and latch segment (15) contact are contacted, the spring force of locking spring (17) makes latch segment (15) enter groove (25), solved
During lock, locking spring (17) plays cushioning effect, prevents latch segment (15) from quickly exiting groove (25) and occurring with piston (10)
Hit.
A kind of 9. end mechanical self-locking hydraulic cylinder of band buffering according to claim 1, it is characterised in that：The check valve
(27) push rod spring (20), push rod (21), poppet valve core (22), poppet valve core spring (23) and conical valve base (24), push rod (21) are included
In conical valve base (24), the end thereof contacts cylinder bottom (2) of push rod (21), another end in contact poppet valve core (22) of push rod (21)
Tail end, the front end contact hydraulic oil channel mouth of poppet valve core (22), cushioning effect has been provided between push rod (21) and piston (10)
Push rod spring (20), the front end of poppet valve core (22) has been provided with the poppet valve core spring (23) of cushioning effect, push rod spring (20)
Push rod (21) and poppet valve core (22) hit with piston (10) when preventing that hydraulic cylinder from unlocking with poppet valve core spring (23).
A kind of 10. end mechanical self-locking hydraulic cylinder of band buffering according to claim 1, it is characterised in that：The suspension ring
(14) it is connected through a screw thread with piston rod (7), suspension ring (14) connection load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610800738.5A CN106286464B (en) | 2016-09-02 | 2016-09-02 | A kind of end mechanical self-locking hydraulic cylinder of band buffering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610800738.5A CN106286464B (en) | 2016-09-02 | 2016-09-02 | A kind of end mechanical self-locking hydraulic cylinder of band buffering |
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| Publication Number | Publication Date |
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| CN106286464A CN106286464A (en) | 2017-01-04 |
| CN106286464B true CN106286464B (en) | 2017-12-05 |
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| CN201610800738.5A Active CN106286464B (en) | 2016-09-02 | 2016-09-02 | A kind of end mechanical self-locking hydraulic cylinder of band buffering |
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| CN112081792B (en) * | 2020-07-29 | 2022-11-08 | 太原重工股份有限公司 | Piston assembly with locking function |
| CN113530916A (en) * | 2021-08-25 | 2021-10-22 | 马庆国 | Single-acting supporting hydraulic cylinder |
| CN113565830B (en) * | 2021-08-25 | 2023-09-19 | 重庆众颖熙科技有限公司 | Single-acting hydraulic cylinder |
| CN113530915A (en) * | 2021-08-25 | 2021-10-22 | 马庆国 | Self-locking type single-action hydraulic cylinder |
| CN114215816B (en) * | 2021-12-04 | 2024-02-02 | 建湖县八达液压机械有限公司 | Mechanical locking hydraulic cylinder |
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| US4524676A (en) * | 1984-01-19 | 1985-06-25 | American Standard Inc. | Hydraulic cylinder locking device |
| WO2003064864A1 (en) * | 2002-01-30 | 2003-08-07 | Weber-Hydraulik Gmbh | Hydraulic cylinder |
| CN202579453U (en) * | 2012-03-08 | 2012-12-05 | 柳州双吉机械有限公司 | Buffer device for hydraulic oil cylinder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009047748B3 (en) * | 2009-12-09 | 2011-07-28 | SUSPA GmbH, 90518 | Length adjustable piston-cylinder unit with safety device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4524676A (en) * | 1984-01-19 | 1985-06-25 | American Standard Inc. | Hydraulic cylinder locking device |
| WO2003064864A1 (en) * | 2002-01-30 | 2003-08-07 | Weber-Hydraulik Gmbh | Hydraulic cylinder |
| CN202579453U (en) * | 2012-03-08 | 2012-12-05 | 柳州双吉机械有限公司 | Buffer device for hydraulic oil cylinder |
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| CN106286464A (en) | 2017-01-04 |
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