CN108518386A - A kind of cushion cylinder - Google Patents
A kind of cushion cylinder Download PDFInfo
- Publication number
- CN108518386A CN108518386A CN201810437735.9A CN201810437735A CN108518386A CN 108518386 A CN108518386 A CN 108518386A CN 201810437735 A CN201810437735 A CN 201810437735A CN 108518386 A CN108518386 A CN 108518386A
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- chamber
- cushion
- cylinder
- oil
- fluid port
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- 239000003921 oil Substances 0.000 claims abstract description 102
- 230000003139 buffering effect Effects 0.000 claims abstract description 82
- 239000000872 buffer Substances 0.000 claims abstract description 70
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims description 113
- 238000007667 floating Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000010729 system oil Substances 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011176 pooling Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001360 synchronised effect Effects 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/228—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having shock absorbers mounted outside the actuator housing
-
- 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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of cushion cylinders, it include the power cylinder for connecting load, the outside of power cylinder has been independently arranged buffering converter, the power of cushion cylinder and buffering function module is arranged apart, and the two is connected by channel connector, by oil piping system into cushion chamber and oil back chamber fuel feeding, the high pressure liquid pressure oil from hydraulic system is converted to the high pressure oil of power cylinder working chamber, power cylinder generation is made to push away (or draw) power；In power cylinder reverse operation, the hydraulic oil of the power cylinder working chamber flows into the conversion chamber of buffering converter, push buffering converter piston bar and piston advances forward, after the buffer body on piston rod enters cushion stroke, the circulation area of buffer channel reduces to form throttling passage, the pressure of cushion chamber increases rapidly, and the pressure of power cylinder working chamber is caused also to increase rapidly, drag effect is formed in power the cylinder piston and piston rod, the moving component of power cylinder and driven object body is made gradually to slow down until stopping.
Description
【Technical field】
The invention belongs to technical field of hydraulic oil cylinder, and more particularly, to a kind of reliability, high, suitable high-speed overload uses field
The cushion cylinder of conjunction.
【Background technology】
Hydraulic drive biggest advantage is that its power weight ratio and power-mass ratio are big, especially in, high-power and real
Especially prominent when existing straight reciprocating motion, hydraulic cylinder is the executive component that straight reciprocating motion is realized in hydraulic drive, works as hydraulic pressure
When the moving component of oil cylinder makees fast reciprocating action with the moving object with certain mass, have at the end of the stroke prodigious dynamic
Can, such as at the end of the stroke without buffer unit, make moving component gradual braking, the inertia force and hydraulic coupling of moving component that will cause to live
The mechanical impact of plug and end cap generates impact, noise, or even damage cylinder part, especially in the application scenario of high-speed overload, oil
The performance of cylinder buffer unit directly influences equipment even personal safety.It is real for hydraulic cylinder disclosed in currently available technology
The mode now buffered mainly has throttling buffering and external valve control in cylinder to buffer two kinds.Throttle in the first cylinder buffering method, be
To there are distinguish on the internal part of relative motion (piston and piston rod) and external component (cylinder barrel and end cap) in hydraulic cylinder
The buffering parts of pairing are set, and at the end of the stroke, the buffering parts of these pairings can be in internal part (piston and piston
Bar) oil storage space with throttling passage, the throttling passage circulation area are formed between external component (cylinder barrel and end cap)
May immobilize may also change with stroke, but respectively less than faster reciprocal motion when hydraulic oil circulation area, i.e., by subtracting
Small hydraulic oil circulation area makes the hydraulic oil of the oil storage space form high pressure, to generate prodigious resistance, keeps moving component flat
Steady braking, avoids the mutual shock of piston and end cap.There are many structure types for this buffering method, can meet low speed underloading and use
The oil cylinder gradual braking of occasion has the advantages that compact-sized and reliability is higher；But no matter which kind of structure it uses, this slow
It rushes mode and there is following problem：1. the structure and installation dimension by oil cylinder are limited, buffer capacity is smaller, Wu Faman
The requirement of sufficient high-speed overload use occasion oil cylinder gradual braking；2. since buffer unit is arranged in inside oil cylinder, buffer unit tune
Whole and maintenance is all highly difficult；3. due to buffer unit a portion be made with cylinder movement component it is integrated or connected,
Its requirement on machining accuracy is higher, especially the longer oil cylinder of cushion stroke, and machining accuracy is even more to require strictly；4. since buffering fills
Instantaneous pressure may be generated inside oil cylinder by setting, and certain influence is constituted to the safety of hydraulic cylinder.Second of valve control buffers
Mode is that buffer loop is arranged in the hydraulic circuit of oil cylinder, by the circulation area for gradually turning down oil cylinder oil return line hydraulic valve
Realize that buffering, this buffering method can reach the buffer requirements of high-speed overload use occasion oil cylinder, but due to realizing buffering
Controlled hydraulic valve there are spool be easy it is stuck cause buffer invalidation and control signal failure cause severe impact etc. a series of
There is reliability deficiency in problem, this buffering method.
Although above two buffering method has obtained widely applying in existing hydraulic cylinder, the prior art exists
The problem of buffer capacity or reliability deficiency, can not being reliably achieved high-speed overload use occasion, (especially some are to safety
It is required that high occasion, such as amusement facility, man lift etc.) gradual braking of oil cylinder.
The present invention is namely based on what such case was made.
【Invention content】
The purpose of the present invention is to overcome the shortcomings of the prior art and to provide one kind, and there is high, the suitable high-speed overload of reliability to answer
Cushion cylinder, buffer capacity foot, securely and reliably, structure type is flexible, buffer unit adjustment and safeguard be easy, installation and
Easy to use, hydraulic cylinder service life is long.
The present invention is achieved by the following technical solutions：
A kind of cushion cylinder, it is characterised in that：Include the power cylinder for connecting load, the outside of the power cylinder is independent
It is provided with buffering converter, the buffering converter includes the buffering for buffering cylinder body, being arranged in buffering cylinder body and being pierced by front end
Piston rod, connect with damper piston bar and with inner chamber of cylinder block matched damper piston, the buffing pad that is fixed in cushion dashpot body,
The inner space of the buffering cylinder body is divided into oil back chamber, cushion chamber and conversion chamber, institute from front to back by buffing pad and damper piston
It states conversion chamber and cushion chamber, oil back chamber is completely isolated, the damper piston bar is passed through from buffing pad, the buffing pad and buffering
Be formed between piston rod for fluid between cushion chamber and oil back chamber by buffer channel, be located on the damper piston bar
The buffer body that the circulation area of buffer channel can be reduced when toward nose motion and to form throttling passage is equipped in cushion chamber, it is described
Buffer cylinder body be equipped with access hydraulic system and into cushion chamber and oil back chamber fuel feeding and oil return oil piping system, the power cylinder
It is provided between gentle red switch parallel operation and needs the working chamber for buffering side and the channel connector for converting chamber for being connected to power cylinder.
A kind of cushion cylinder as described above, it is characterised in that：The power cylinder includes power cylinder, the power cylinder
It is interior be equipped with the matched power piston in its inner cavity, the inner space of the power cylinder is divided into rod chamber and nothing by power piston
Two working chambers of rod cavity are equipped in the rod chamber and connects and be used for the power piston bar that connection loads with power piston.
As described above, the present invention proposes a kind of new design principle：By the power of cushion cylinder and buffering function module
It is arranged apart, and power is connected with buffering function module by channel connector.According to applying working condition, a power cylinder can match
Set one or more buffering converters, buffering converter is a kind of multi-function device of special designing, 1. by oil piping system to
High pressure liquid pressure oil from hydraulic system is converted to the work being connected to conversion chamber in power cylinder by fuel feeding in cushion chamber and oil back chamber
The high pressure oil for making chamber makes power cylinder generation push away (or drawing) power, and in this stage, buffering converter plays transformation；2. in power cylinder
When reverse operation, the hydraulic oil of the power cylinder working chamber flows into the conversion chamber of buffering converter, pushes buffering converter piston bar
And piston advances forward, after the buffer body on piston rod enters cushion stroke, the circulation area of buffer channel is gradually reduced shape
At throttling passage, the pressure for buffering cushion chamber in converter increases rapidly, and the pressure of power cylinder working chamber is caused also to rise rapidly
Height forms drag effect on power piston and power piston bar, the moving component of power cylinder and driven object body is made gradually to subtract
Speed is until stop, and in this stage, buffering converter mainly works as a buffer.
A kind of cushion cylinder as described above, it is characterised in that：The power cylinder is equipped with for rodless cavity into fuel-displaced
Third hydraulic fluid port, the power cylinder are equipped with the second hydraulic fluid port communicated with rodless cavity, and the power cylinder is equipped with for rod chamber
Into the first fuel-displaced hydraulic fluid port, the buffering cylinder body is equipped with for conversion chamber into the 4th fuel-displaced hydraulic fluid port, in the channel connector
Equipped with the connector channel for being connected to power cylinder working chamber with converting chamber.
A kind of cushion cylinder as described above, it is characterised in that：Second hydraulic fluid port is circumscribed be closed
One reversal valve, the third hydraulic fluid port are connected to the 4th hydraulic fluid port by connector channel.
A kind of cushion cylinder as described above, it is characterised in that：Second hydraulic fluid port and the first hydraulic fluid port pass through exterior line
Connection.
A kind of cushion cylinder as described above, it is characterised in that：First hydraulic fluid port connect hydraulic system or with by another
One channel connector is connected to the conversion chamber of another buffering converter.
A kind of cushion cylinder as described above, it is characterised in that：The buffing pad be equipped with can with buffering mates from
And form the bumper ring of throttling passage.
A kind of cushion cylinder as described above, it is characterised in that：The oil piping system includes the 6th hydraulic fluid port, the 6th oil
Mouth is communicated with oil back chamber.
A kind of cushion cylinder as described above, it is characterised in that：It is equipped with for before and after bumper ring and radial in the buffing pad
The floating trough of floating, the bumper ring be located at inner ring edge be equipped with forwardly convex annular convex platform, the buffing pad be equipped with
On front side of the opposite slot of boss, the outside that boss is located on the bumper ring is equipped with the through-hole that perforation is front and back and is connected to cushion chamber,
In oil back chamber toward when cushion chamber oil inlet, the bumper ring is against on rear side of floating trough, on front side of boss and slot between, bumper ring and floating
Between slot, through-hole be collectively formed for fluid by runner；In cushion chamber toward when oil back chamber oil inlet, boss is pressed in upper shape on front side of slot
At closed-loop, blocking fluid passes through between boss and slot front side.
A kind of cushion cylinder as described above, it is characterised in that：The oil piping system includes the 5th hydraulic fluid port for oil inlet,
And the 6th hydraulic fluid port for the fluid outflow in cushion chamber and oil back chamber, the 5th hydraulic fluid port are communicated with cushion chamber, the described 5th
Hydraulic fluid port is built-in or is circumscribed with check valve, and the 6th hydraulic fluid port is communicated with oil back chamber, and on and off can be beaten by being connected on the 6th hydraulic fluid port
The second reversal valve for closing oil circuit, in the oil back chamber toward when hydraulic system oil return, the second reversal valve is in the open state.
Compared with prior art, the present invention has the following advantages：
1, the outside that converter is independently arranged at power cylinder is buffered in the present invention, by the power and pooling feature of cushion cylinder
Module is arranged apart, and power is connected with buffering function module by channel connector, and buffer capacity foot and reliability is high
It fully combines, integrates Performance And Reliability.
2, buffer capacity foot of the present invention：Buffer unit (buffering converter and channel connector) is arranged in power by the present invention
It outside cylinder, is not influenced by power cylinder structure snd size, various high performance buffer structure forms can be used, fully absorb existing
The strong advantage of hydraulic bjuffer buffer capacity, can design high performance buffer unit, meet the oil of high-speed overload use occasion
Cylinder buffer requirements.
3, the present invention is safe and reliable：Pass through machinery between power cylinder in cushion cylinder of the present invention and buffering converter
Mode connects (i.e. channel connector), and without controlled hydraulic valve and control signal, cushion performance is solely dependent upon the knot of correlated parts
Structure size and machining accuracy overcome valve control buffering since hydraulic pressure valve core valve pocket cooperation precision is high, hydraulic valve driving power is small
Cause spool be easy it is stuck cause buffer invalidation, cushion performance to rely on a series of defects of control signal etc., securely and reliably, especially
Security reliability is good in high-speed overload application.
4, structure of the invention flexible form：Buffering can be adjusted according to the requirement of applying working condition, cushion performance and installation space
The diameter ratio of converter and power cylinder；The channel connector is being arranged either link block can also make connecting pipe
Power cylinder red switch parallel operation can be eased up into parallel, coaxial or vertical, inclination arrangement by link block in mode, connection can be also passed through
The power cylinder red switch parallel operation that eases up is remotely locatable by pipeline, to reduce the limitation of cushion cylinder installation space, is applicable in different make
Use demand.
5, buffer unit (buffering converter and channel connector) adjustment and maintenance of the present invention are easy：The buffering dress of the present invention
It sets due to being arranged in outside power cylinder, when needing that buffer unit is adjusted and safeguarded, it is only necessary to be torn open to buffer unit part
Adjustment is whole, does not influence power cylinder and equipment.
6, the present invention is easy to install and use：The power cylinder portion of cushion cylinder of the present invention substantially with common oil cylinder phase
Together, the mounting means of common oil cylinder can be used；Simultaneously as the cushion cylinder of the present invention haves no need to change power cylinder internal junction
Structure, therefore it can be directly produced into the cushion cylinder of finished product, it can also be easy to use by being converted to common oil cylinder.
7, service life of the present invention is long：The cushion cylinder buffer capacity foot of the present invention, dependable performance, can avoid power cylinder
Mechanical collision, effectively extend the service life of cushion cylinder.
【Description of the drawings】
The specific implementation mode of the present invention is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is that the present invention realizes that a kind of embodiment power cylinder of one-way buffer stretches out phase principle figure；
Fig. 2 is power cylinder retraction phase principle figure in Fig. 1 embodiments；
Fig. 3 is buffer stage schematic diagram in Fig. 1 embodiments；
Fig. 4 is a kind of embodiment schematic diagram that the present invention realizes bidirectional buffering；
Fig. 5 is the reality of the first hydraulic fluid port and the second hydraulic fluid port connection of the invention and the 6th hydraulic fluid port as oil inlet and oil return opening
Example is applied in oil inlet state principle figure；
Fig. 6 is buffering converter in Fig. 5 in embodiment in oil return state schematic diagram.
【Specific implementation mode】
The invention will be further described below in conjunction with the accompanying drawings：
Signified front (front end) refers to one end of piston rod stretching in the present invention, and rear (rear end) is and front (front end) phase
To one end.
A kind of cushion cylinder as shown in Figures 1 to 4 realizes a kind of embodiment of one-way buffer for the present invention, including dynamic
Power cylinder 1 eases up red switch parallel operation 2, and the buffering converter 2 is independently arranged at the outside of power cylinder 1, and power cylinder 1 includes by drive end bearing bracket
102, the power cylinder 10 that power cylinder tube 103 and rear end cap 105 form, setting is at 103 center of power cylinder tube and passes through drive end bearing bracket
102 power piston bar 101 and connect with power piston bar 101 and with the matched power piston in 103 inner cavity of power cylinder tube
104, it is two that the inner space that the power cylinder tube 103 is formed with drive end bearing bracket 102 and rear end cap 105 is divided to by power piston 104
Work chamber, i.e. rod chamber I and rodless cavity II, rod chamber I and rodless cavity II can separate completely, can also pass through power piston 104
Inner passage is connected to；The first hydraulic fluid port A, the second hydraulic fluid port B and third hydraulic fluid port C, the first oil are respectively arranged on the power cylinder 10
Mouth A is communicated with rod chamber I, and the second hydraulic fluid port B and third hydraulic fluid port C are communicated with rodless cavity II, and the second hydraulic fluid port B is external to be closed
The first reversal valve 4, the first reversal valve 4 can be switched to opening state when needing repairing, can be to nothing by the second hydraulic fluid port B
Rod cavity II carries out repairing.
Buffering converter 2 includes the buffering cylinder body 20 being made of drive end bearing bracket 207, buffering cylinder barrel 202, rear end cap 201, setting
Buffering 202 center of cylinder barrel and across the damper piston bar 208 of drive end bearing bracket 207, connect with damper piston bar 208 and and cushion dashpot
The matched damper piston 203 in 20 inner cavity of body and buffering 202 relatively-stationary buffing pad 205 of cylinder barrel and setting are in buffing pad 205
Interior bumper ring 206, the inner space that the buffering cylinder barrel 202 is formed with drive end bearing bracket 207 and rear end cap 201 is by damper piston
203 and buffing pad 205 (bumper ring 206) be divided into three chambers, that is, convert chamber III, cushion chamber IV and oil back chamber V, convert chamber III
It is completely isolated with cushion chamber IV, oil back chamber V, it is formed with for fluid slow between the buffing pad 205 and buffering piston rod 208
Rush between chamber IV and oil back chamber V by buffer channel 211, be located on the damper piston bar 208 in cushion chamber IV be equipped with it is slow
Body 204 is rushed, the preferred buffer channel 211 is circular passage, and the buffer body 204 is the big bullet in the small rear end in front end,
Cushion chamber IV and oil back chamber V form loop buffer channel 211 by damper piston bar 208 and buffing pad 205 (bumper ring 206),
Or the loop buffer channel by being formed between the buffer body 204 on damper piston bar 208 and buffing pad 205 (bumper ring 206)
211 communicate, and the circulation area of the buffer channel 211 is with the buffer body 204 on damper piston bar 208 or damper piston bar 208
Change in location, when buffer body 204 moves forward, the buffer channel between buffer body 204 and buffing pad 205 (bumper ring 206)
211 circulation area is gradually reduced to form throttling；The buffering cylinder barrel 202 be respectively arranged with the 4th hydraulic fluid port D, the 5th hydraulic fluid port E and
6th hydraulic fluid port F, the 4th hydraulic fluid port D are communicated with conversion chamber III, and the 5th hydraulic fluid port E communicates with cushion chamber IV, the 6th hydraulic fluid port F and oil back chamber V
It communicates；5th hydraulic fluid port E can built-in or external check valve 401, the 6th hydraulic fluid port F connects the second reversal valve 5 that can open and close oil circuit；
The channel connector 3 of both connections, the channel connector 3 are equipped between the third hydraulic fluid port C and the 4th hydraulic fluid port D
In be equipped with the connector channel 301 that is docked and connected with third hydraulic fluid port C and the 4th hydraulic fluid port D；The third hydraulic fluid port C of power cylinder 1 passes through company
Junctor channel 301 is communicated with the 4th hydraulic fluid port D of buffering converter 2, buffers conversion chamber III, 301 and of connector channel of converter 2
A closing oil storage space is formed between the rodless cavity II of power cylinder 1.
Buffering converter 2 and channel connector 2 are arranged in outside power cylinder 1, are not influenced by power cylinder structure snd size,
And buffer capacity is strong, meets the cylinder buffer requirement in high-speed overload use occasion.In addition, it is necessary to buffer unit (buffering
Converter and channel connector) adjustment and when safeguarding, it is only necessary to dismounting adjustment is carried out to buffer unit part, does not influence power cylinder
With equipment, adjustment and maintenance are easy.
It is connected by channel connector 3 between the power cylinder 1 and buffering converter 2, belongs to and be mechanically connected, be not necessarily to
Controlled hydraulic valve and control signal, cushion performance are solely dependent upon the structure size and machining accuracy of correlated parts, overcome valve control
Buffering causes spool to be easy stuck buffering to be caused to be lost since hydraulic pressure valve core valve pocket cooperation precision is high, hydraulic valve driving power is small
Effect, cushion performance rely on a series of defects such as control signal, securely and reliably, the security reliability especially in high-speed overload application
It is good.
Can be according to the requirement of applying working condition, cushion performance and installation space, adjustment buffering converter 2 is straight with power cylinder 1
Diameter ratio.
And according to needs when the cushion cylinder specific works, the first hydraulic fluid port A of power cylinder 1 can be according to working method not
Together, it takes and is individually connected to hydraulic circuit.
In conjunction with Fig. 1, the 5th hydraulic fluid port E is connected to hydraulic system into oil return line, and the 6th hydraulic fluid port F accesses hydraulic pressure through the second reversal valve 5
Stage, when the cushion cylinder is from the 5th hydraulic fluid port E oil inlets, the 6th hydraulic fluid port are stretched out in system oil return circuit in power piston bar 101
F is closed by the second reversal valve 5, after fluid enters cushion chamber IV and oil back chamber V, push damper piston 203 and
Damper piston bar 208 quickly moves backward, converts the fluid of chamber III and from the 4th hydraulic fluid port D enters connector channel 301 and by the
Three hydraulic fluid port C flow into the rodless cavity II of power cylinder 1, and propulsion power piston 104 and power piston bar 101 quickly travel forward, and drive
Driven object body moves, when reaching designated position, the 5th hydraulic fluid port E stopping oil inlet, due to the 5th hydraulic fluid port E have check valve 401 and
6th hydraulic fluid port F is closed, therefore the hydraulic oil of cushion chamber IV and oil back chamber V is in closed state, and pressure is identical, and
Reach balance with the pressure of conversion chamber III；And it is also closing to convert between chamber III, connector channel 301 and power cylinder rodless cavity II
Oil storage space, thus convert chamber III it is identical as the pressure of rodless cavity II of power cylinder, and with power piston 104 and power piston bar
101 load reaches equilibrium state, makes power cylinder stop motion and keeps in the position, in this stage, buffering converter is main
Play transformation；
In conjunction with Fig. 2 and attached drawing 3, retracts in power piston bar 101 and buffer stage, the second reversal valve 5 are switched to open shape
State, the 6th hydraulic fluid port F are constantly in opening state, and the hydraulic oil of cushion chamber IV enters oil back chamber V by buffer channel 211, from the
Six hydraulic fluid port F outflows, cause the pressure reduction of cushion chamber IV, and with the pressure disequilibrium of conversion chamber III, to make damper piston
203 travel forward, and damper piston bar 208 starts to forward extend out, due to rodless cavity II, conversion chamber III and connector channel 301 it
Between be a closing oil storage space, therefore the hydraulic oil of rodless cavity II from third hydraulic fluid port C enters connector channel 301 and by the
Four hydraulic fluid port D flow into conversion chamber III, and power piston 104 and power piston bar 101 start to retract；In the incipient stage, bumper ring 206
211 circulation area of buffer channel between (buffing pad 205) and damper piston bar 208 is larger, and the hydraulic oil of cushion chamber IV is quick
Outflow, the movement velocity of power piston 104 and power piston bar 101 is also very fast at this time, until buffer body 204 enters bumper ring
After 206,211 circulation area of buffer channel that IV hydraulic oil of cushion chamber flows into oil back chamber V gradually reduces, the hydraulic pressure of cushion chamber IV
Oil pressure increases rapidly, and conversion chamber III, connector channel 301 and the pressure of rodless cavity II are also synchronous to be increased, in power piston 104
With big resistance is generated on power piston bar 101, make power cylinder 1 moving component and driven object body gradually slow down until stop
Get off, in this stage, buffering converter mainly works as a buffer.
In the present embodiment, the buffer body 204 can be used in existing buffer technology any one structure type (such as：
The structures such as cone, cylinder with throttling channel), form throttling passage with buffing pad 205 or bumper ring 206；Bumper ring 206 with
It can be used between buffing pad 205 and be integrally machined, be relatively fixed or in floating state.
And according to needs when the cushion cylinder specific works, the first hydraulic fluid port A of power cylinder 1 can also connect with the second hydraulic fluid port B
Logical (such as Fig. 5), power cylinder is plunger case at this time, and rod chamber I and nothing are connected to exterior line by the first hydraulic fluid port A, the second hydraulic fluid port B
Rod cavity II then buffers one closing of formation between conversion chamber III, connector channel 301 and rodless cavity II, the rod chamber I of converter
Oil storage space.Power piston bar 101 stretches out the stage, after fluid enters cushion chamber IV and oil back chamber V, pushes damper piston 203
And damper piston bar 208 quickly moves backward, the fluid of conversion chamber III enters connector channel 301 from the 4th hydraulic fluid port D and passes through
Third hydraulic fluid port C flows into the rodless cavity II of power cylinder 1, and propulsion power piston 104 and power piston bar 101 quickly travel forward, and
Power piston 104 pushes the fluid of rod chamber I to flow out from the first hydraulic fluid port A and enter in rodless cavity II through the second hydraulic fluid port B；In power
Piston rod 101 is retracted and buffer stage, due to being a closing between rod chamber I, rodless cavity II, conversion chamber III and channel 301
Oil storage space, therefore the hydraulic oil of rodless cavity II enters connector channel 301 from third hydraulic fluid port C and is flowed by the 4th hydraulic fluid port D
Chamber III is converted, while the hydraulic oil of rodless cavity II also has bar from the second hydraulic fluid port B outflows and through exterior line and the first hydraulic fluid port A inflows
In chamber I.
In addition, a kind of embodiment of bidirectional buffering as shown in Figure 4, using two buffering converters 2, the first hydraulic fluid port A and
The channel connector 3 of both another connections, buffering conversion are equipped between the 4th hydraulic fluid port D on another buffering converter 2
Also a closing oil storage space is formed between the rod chamber I of the conversion chamber III, connector channel 301 and power cylinder 1 of device 2.Power
When piston rod 101 stretches out, the fluid of the conversion chamber III in a buffering converter 2 passes through connector channel 301 from its 4th hydraulic fluid port D
The rodless cavity II of power cylinder 1 is flowed into third hydraulic fluid port C, propulsion power piston 104 and power piston bar 101 quickly travel forward,
And the fluid of rod chamber I is from the first hydraulic fluid port A outflows and slow into another through 301 and the 4th hydraulic fluid port D of corresponding connector channel
In conversion chamber III in red switch parallel operation 2, similarly by this buffering converter 2 make on power piston 104 and power piston bar 101
Big resistance is generated, so that the moving component of power cylinder 1 and driven object body is gradually slowed down until stopping, works as a buffer.
The oil piping system of above-mentioned fuel feeding and oil return into cushion chamber IV and oil back chamber V, i.e. the 5th hydraulic fluid port E, check valve 401
The system formed with the 6th hydraulic fluid port F, the second reversal valve 5, can also use following scheme (such as Fig. 5 and Fig. 6)：6th hydraulic fluid port
F has both been used as oil inlet or has been used as oil outlet, and the 6th hydraulic fluid port F communicates with oil back chamber V, it is preferable that the bumper ring 206 is
The check valve floating structure being located on buffing pad 205, can cancel check valve 401 and the 5th hydraulic fluid port E at this time.The check valve floating junction
Structure is realized by following scheme：It is equipped in the buffing pad 205 for the front and back floating trough 2051 to float of bumper ring 206, it is described slow
Punching circle 206 is located at inner ring edge and is equipped with forwardly convex annular convex platform 2061, and the buffing pad 205 is equipped with and 2061 phase of boss
To slot on front side of 2052, the outside of boss 2061 is located on the bumper ring 206, and to be equipped with perforation front and back and be connected to cushion chamber IV
Through-hole 2062, in oil back chamber V toward when IV oil inlet of cushion chamber, the bumper ring 206 is against 2051 rear side of floating trough, boss
Gap, through-hole 2062 between 2061 and slot front side 2052 between formation gap, bumper ring 206 and floating trough 2051 are collectively formed
For fluid by runner, with buffer channel 211 together give cushion chamber IV in fuel feeding；In cushion chamber IV toward V oil inlet of oil back chamber
When, boss 2061, which is pressed on 2052 on front side of slot, forms closed-loop, and blocking fluid passes through between boss 2061 and slot front side 2052, oil
Liquid is mainly flowed back into from cushion chamber IV in oil back chamber V by buffer channel 211, simple in structure, and there is preferable buffering to imitate
Fruit.
Above-mentioned channel connector 3 both can by link block 302 and with 302 integrally formed channel connector 301 of link block
It constitutes, can also be made of the pipeline with channel connector 301, the channel connector 3 is either link block can also
Make connecting pipe, on arrangement can by link block by power cylinder 1 ease up red switch parallel operation 2 at it is parallel, coaxial or vertical, incline
The red switch parallel operation 2 that eases up of power cylinder 1 can be also remotely locatable by tiltedly arrangement by connecting pipe, empty to reduce cushion cylinder installation
Between limitation, structure type is flexible, is applicable in different use demands.
The above is only some embodiments of the present invention, is not imposed any restrictions to the present invention, every according to the present invention
The technical spirit of the design principle of proposition to made by above example it is any it is simple modification, change and equivalent structure variation or
Person converts working media (such as gas), is still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of cushion cylinder, it is characterised in that：Include the power cylinder (1) for connecting load, the outside of the power cylinder (1)
It is independently arranged buffering converter (2), the buffering converter (2) includes buffering cylinder body (20), setting in buffering cylinder body (20)
In and be pierced by the damper piston bar (208) of front end, connect with damper piston bar (208) and live with the matched buffering of inner chamber of cylinder block
Plug (203), the buffing pad (205) being fixed in buffering cylinder body (20), the inner space of the buffering cylinder body (20) is by buffing pad
(205) and damper piston (203) is divided into oil back chamber (V), cushion chamber (IV) and conversion chamber (III), the conversion chamber from front to back
(III) completely isolated with cushion chamber (IV), oil back chamber (V), the damper piston bar (208) is from buffing pad (205) across institute
It states to be formed between buffing pad (205) and buffering piston rod (208) and lead between cushion chamber (IV) and oil back chamber (V) for fluid
The buffer channel (211) crossed, is located in cushion chamber (IV) that be equipped with when toward nose motion can will on the damper piston bar (208)
The circulation area of buffer channel (211) reduces the buffer body (204) to form throttling passage, and the buffering cylinder body (20) is equipped with and connects
Enter hydraulic system and to the oil piping system of cushion chamber (IV) and oil back chamber (V) interior fuel feeding and oil return, the power cylinder (1) is gentle
It is provided between red switch parallel operation (2) and needs the working chamber for buffering side and the channel for converting chamber (III) for being connected to power cylinder (1)
Connector (3).
2. a kind of cushion cylinder according to claim 1, it is characterised in that：The power cylinder (1) includes power cylinder
(10), be equipped in the power cylinder (10) with the matched power piston in its inner cavity (104), the power cylinder (10) it is interior
Portion space is divided into (II) two working chamber of rod chamber (I) and rodless cavity by power piston (104), is equipped in the rod chamber (I)
It is connect with power piston (104) and for connecting the power piston bar (101) loaded.
3. a kind of cushion cylinder according to claim 2, it is characterised in that：The power cylinder (10) is equipped with for no bar
Chamber (II) is equipped with the second hydraulic fluid port communicated with rodless cavity (II) into fuel-displaced third hydraulic fluid port (C), the power cylinder (10)
(B), the power cylinder (10) is equipped with for rod chamber (I) into fuel-displaced the first hydraulic fluid port (A), is set on the buffering cylinder body (20)
Have for conversion chamber (III) into the 4th fuel-displaced hydraulic fluid port (D), the channel connector (3) is interior to be equipped with for being connected to power cylinder (1) work
Make chamber and converts the connector channel (301) of chamber (III).
4. a kind of cushion cylinder according to claim 3, it is characterised in that：Second hydraulic fluid port (B) is circumscribed in pass
The first reversal valve (4) of closed state, the third hydraulic fluid port (C) are connected to the 4th hydraulic fluid port (D) by connector channel (301).
5. a kind of cushion cylinder according to claim 4, it is characterised in that：Second hydraulic fluid port (B) and the first hydraulic fluid port (A)
It is connected to by exterior line.
6. a kind of cushion cylinder according to claim 4, it is characterised in that：First hydraulic fluid port (A) connect hydraulic system or
Person is connected to the conversion chamber (III) of another buffering converter (2) with by another channel connector (3).
7. a kind of cushion cylinder according to claim 1, it is characterised in that：The buffing pad (205) be equipped with can with it is slow
Body (204) is rushed to match to form the bumper ring (206) of throttling passage.
8. a kind of cushion cylinder according to claim 7, it is characterised in that：The oil piping system includes the 6th hydraulic fluid port (F),
6th hydraulic fluid port (F) communicates with oil back chamber (V).
9. a kind of cushion cylinder according to claim 8, it is characterised in that：It is equipped with for buffering in the buffing pad (205)
It encloses before and after (206) and the floating trough (2051) of radial floating, the bumper ring (206) is located at inner ring edge equipped with forwardly convex
Annular convex platform (2061), the buffing pad (205) are equipped on front side of the slot opposite with boss (2061) (2052), the bumper ring
(206) it is equipped with the through-hole (2062) that perforation is front and back and is connected to cushion chamber (IV) positioned at the outside of boss (2061) on, in oil return
Toward when cushion chamber (IV) oil inlet, the bumper ring (206) is against on rear side of floating trough (2051) chamber (V), before boss (2061) and slot
Between side (2052), between bumper ring (206) and floating trough (2051), through-hole (2062) be collectively formed for fluid by stream
Road；In cushion chamber (IV) toward when oil back chamber (V) oil inlet, boss (2061) is pressed on front side of slot and forms closed-loop, boss on (2052)
(2061) and on front side of slot blocking fluid passes through between (2052).
10. a kind of cushion cylinder according to claim 1, it is characterised in that：The oil piping system includes for oil inlet
5th hydraulic fluid port (E), and for the 6th hydraulic fluid port (F) of the fluid outflow in cushion chamber (IV) and oil back chamber (V), the 5th oil
Mouth (E) is communicated with cushion chamber (IV), and the 5th hydraulic fluid port (E) is built-in or is circumscribed with check valve (401), the 6th hydraulic fluid port (F)
It is communicated with oil back chamber (V), the second reversal valve (5) that can open and close oil circuit is connected on the 6th hydraulic fluid port (F), described
For oil back chamber (V) toward when hydraulic system oil return, the second reversal valve (5) is in the open state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810437735.9A CN108518386B (en) | 2018-05-09 | 2018-05-09 | Buffer oil cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810437735.9A CN108518386B (en) | 2018-05-09 | 2018-05-09 | Buffer oil cylinder |
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| CN108518386A true CN108518386A (en) | 2018-09-11 |
| CN108518386B CN108518386B (en) | 2024-04-26 |
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|---|---|---|---|
| CN201810437735.9A Active CN108518386B (en) | 2018-05-09 | 2018-05-09 | Buffer oil cylinder |
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| CN109595217A (en) * | 2019-01-02 | 2019-04-09 | 中船重工中南装备有限责任公司 | The oil cylinder of asphalt channel built in a kind of band |
| CN110094244A (en) * | 2019-05-13 | 2019-08-06 | 哈尔滨工程大学 | The electro-hydraulic full variable gas distribution actuator of one kind and its control method |
| CN112377124A (en) * | 2020-11-19 | 2021-02-19 | 中油国家油气钻井装备工程技术研究中心有限公司 | Hydraulic floating and lifting screwing clamp device |
| CN112806670A (en) * | 2021-01-31 | 2021-05-18 | 冯杰慧 | Shoe heel |
| CN113683004A (en) * | 2021-09-02 | 2021-11-23 | 海盐海顶汽车配件科技股份有限公司 | Vertical oil pressure slow-lowering jack |
| CN113847376A (en) * | 2021-09-10 | 2021-12-28 | 江苏恒立液压股份有限公司 | Damping hydraulic cylinder |
| CN114135616A (en) * | 2021-12-17 | 2022-03-04 | 江西洪都航空工业集团有限责任公司 | Load buffer structure with rebound damping |
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| CN112806670A (en) * | 2021-01-31 | 2021-05-18 | 冯杰慧 | Shoe heel |
| CN113683004B (en) * | 2021-09-02 | 2023-03-10 | 海盐海顶汽车配件科技股份有限公司 | Vertical oil pressure slow-lowering jack |
| CN113683004A (en) * | 2021-09-02 | 2021-11-23 | 海盐海顶汽车配件科技股份有限公司 | Vertical oil pressure slow-lowering jack |
| CN113847376A (en) * | 2021-09-10 | 2021-12-28 | 江苏恒立液压股份有限公司 | Damping hydraulic cylinder |
| CN114148937A (en) * | 2021-12-14 | 2022-03-08 | 新乡市新华液压机械有限公司 | Novel hydraulic cylinder |
| CN114148937B (en) * | 2021-12-14 | 2023-03-10 | 新乡市新华液压机械有限公司 | Novel hydraulic cylinder |
| CN114135616A (en) * | 2021-12-17 | 2022-03-04 | 江西洪都航空工业集团有限责任公司 | Load buffer structure with rebound damping |
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