CN208203698U - A kind of highly reliable cushion cylinder - Google Patents
A kind of highly reliable cushion cylinder Download PDFInfo
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- CN208203698U CN208203698U CN201820691446.7U CN201820691446U CN208203698U CN 208203698 U CN208203698 U CN 208203698U CN 201820691446 U CN201820691446 U CN 201820691446U CN 208203698 U CN208203698 U CN 208203698U
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Abstract
The utility model discloses a kind of highly reliable cushion cylinders, including the power cylinder for connecting load, the outside of power cylinder has been independently arranged buffering converter, the power of cushion cylinder and buffering functional 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, so that the moving component of power cylinder and driven object body is gradually slowed down until stopping.
Description
[technical field]
The utility model belongs to technical field of hydraulic oil cylinder, more particularly, to a kind of high reliablity, high-speed overload is suitble to make
With the cushion cylinder of occasion.
[background technique]
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, when hydraulic
When the moving component of oil cylinder makees fast reciprocating movement with the moving object with certain mass, moved at the end of the stroke with very big
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 will cause to live
The mechanical impact of plug and end cap generates impact, noise, or even damage cylinder part, especially in the application 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 components of pairing are set, and at the end of the stroke, the buffering components of these pairings can be in internal part (piston and piston
Bar) and external component (cylinder barrel and end cap) between formed an oil storage space with throttling passage, the throttling passage circulation area
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 very big 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
Rushing mode, there are the following problems: 1. being limited by the structure of oil cylinder and installation dimension, 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 buffering
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 buffering, this buffering method can achieve 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 been widely used in existing hydraulic cylinder, the prior art exists
The problem of buffer capacity or reliability deficiency can not be reliably achieved high-speed overload use occasion (more especially pair safety
It is required that high occasion, such as amusement facility, man lift etc.) gradual braking of oil cylinder.
The utility model is namely based on what such case was made.
[utility model content]
The utility model aim is to overcome the deficiencies in the prior art, is provided a kind of with high reliablity, suitable high speed weight
The cushion cylinder of application is carried, buffer capacity foot, securely and reliably, structure type is flexible, and buffer unit adjustment and maintenance are easy, peace
Dress and easy to use, hydraulic cylinder long service life.
The utility model is achieved through the following technical solutions:
A kind of highly reliable cushion cylinder, it is characterised in that: including the power cylinder for connecting load, the power cylinder it is outer
Portion has been independently arranged buffering converter, and the buffering converter includes buffering cylinder body, setting in buffering cylinder body and is pierced by front end
Damper piston bar, connect with damper piston bar and matched with inner chamber of cylinder block damper piston, to be fixed on cushion dashpot intracorporal
The inner space of buffing pad, the buffering cylinder body is divided into oil back chamber, cushion chamber by buffing pad and damper piston from front to back and is turned
Chamber is changed, the conversion chamber and cushion chamber, oil back chamber are completely isolated, and the damper piston bar is passed through from buffing pad, the buffering
The buffer channel passed through between cushion chamber and oil back chamber for oil liquid, the damper piston are formed between seat and buffering piston rod
The circulation area of buffer channel can be reduced to form the slow of throttling passage when toward nose motion by being located to be equipped in cushion chamber on bar
Rush body, the buffering 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 working chamber and conversion chamber for needing to buffer side for being connected to power cylinder are provided between the gentle red switch parallel operation of the power cylinder
Channel connector.
A kind of highly reliable cushion cylinder as described above, it is characterised in that: the power cylinder includes power cylinder, described dynamic
The power piston matched with its inner cavity is equipped in power cylinder body, the inner space of the power cylinder is divided by power piston bar
Two working chambers of chamber and rodless cavity are equipped in the rod chamber and connects and be used for the power piston that connection loads with power piston
Bar.
As described above, the utility model proposes a kind of new design principles: by the power and pooling feature of cushion cylinder
Module is arranged apart, and power is connected with buffering functional module by channel connector.According to applying working condition, a power cylinder
Configurable one or more buffering converters, buffering converter is a kind of multi-function device of special designing, 1. passes through oil circuit system
It unites the fuel feeding into cushion chamber and oil back chamber, the high pressure liquid pressure oil from hydraulic system is converted in power cylinder and is connected to conversion chamber
Working chamber high pressure oil, so that power cylinder generation is pushed away (or draw) power, in this stage, buffer converter and play transformation；2. dynamic
When power cylinder reverse operation, the hydraulic oil of the power cylinder working chamber flows into the conversion chamber of buffering converter, pushes buffering converter living
Stopper rod and piston advances forward, after the buffer body on piston rod enters cushion stroke, the circulation area of buffer channel gradually subtracts
Small formation throttling passage, the pressure for buffering cushion chamber in converter increases rapidly, and causes the pressure of power cylinder working chamber also fast
Speed increase, formed drag effect on power piston and power piston bar, make power cylinder moving component and driven object body by
Decrescence speed is until stop, and in this stage, buffering converter is mainly worked as a buffer.
A kind of highly reliable cushion cylinder as described above, it is characterised in that: the power cylinder be 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, which is equipped with, to be supplied
First hydraulic fluid port of rod chamber disengaging oil, the buffering cylinder body are equipped with the 4th hydraulic fluid port for conversion chamber disengaging oil, and the channel connects
It is equipped in junctor for being connected to power cylinder working chamber and converting the connector channel of chamber.
A kind of highly reliable cushion cylinder as described above, it is characterised in that: second hydraulic fluid port is circumscribed in closing shape
First reversal valve of state, the third hydraulic fluid port are connected to the 4th hydraulic fluid port by connector channel.
A kind of highly reliable cushion cylinder as described above, it is characterised in that: second hydraulic fluid port and the first hydraulic fluid port are outside
Portion's pipeline connection.
A kind of highly reliable cushion cylinder as described above, it is characterised in that: first hydraulic fluid port connect hydraulic system or with
The conversion chamber of another buffering converter is connected to by another channel connector.
A kind of highly reliable cushion cylinder as described above, it is characterised in that: the buffing pad is equipped with can be with buffer body phase
Cooperation is to form the bumper ring of throttling passage.
A kind of highly reliable cushion cylinder as described above, it is characterised in that: the oil piping system includes the 6th hydraulic fluid port, described
6th hydraulic fluid port is communicated with oil back chamber.
A kind of highly reliable cushion cylinder as described above, it is characterised in that: be equipped in the buffing pad for before and after bumper ring
And the floating trough of radial floating, the bumper ring are located at inner ring edge equipped with forwardly convex annular convex platform, on the buffing pad
It equipped with the outside on front side of the slot opposite with boss, being located at boss on the bumper ring is equipped with perforation front and back and is connected to cushion chamber
Through-hole, 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
Between floating trough, through-hole the runner passed through for oil liquid is collectively formed；In cushion chamber toward when oil back chamber oil inlet, before boss is pressed in slot
Closed-loop is formed on side, stops oil liquid to pass through between boss and slot front side.
A kind of highly reliable cushion cylinder as described above, it is characterised in that: the oil piping system includes for oil inlet
Five hydraulic fluid ports, and for the 6th hydraulic fluid port of the oil liquid outflow in cushion chamber and oil back chamber, the 5th hydraulic fluid port is communicated with cushion chamber, institute
It states built in the 5th hydraulic fluid port or is circumscribed with check valve, the 6th hydraulic fluid port is communicated with oil back chamber, is connected to and can be beaten on the 6th hydraulic fluid port
Second reversal valve of open and close 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 utility model has the following advantages:
1, the outside that converter is independently arranged at power cylinder is buffered in the utility model, by the power and buffering of cushion cylinder
Functional module is arranged apart, and power is connected with buffering functional module by channel connector, by buffer capacity foot and reliably
Property it is high sufficiently combine, integrate Performance And Reliability.
2, the utility model buffer capacity foot: the utility model is by buffer unit (buffering converter and channel connector) cloth
It sets outside power cylinder, is not influenced by power cylinder structure snd size, various high performance buffer structure forms can be used, sufficiently
The strong advantage of existing hydraulic bjuffer buffer capacity is absorbed, can be designed high performance buffer unit, meets high-speed overload use
The cylinder buffer requirement of occasion.
3, the utility model is safe and reliable: between the power cylinder in cushion cylinder described in the utility model and buffering converter
(i.e. channel connector) mechanically is connected, without controlled hydraulic valve and control signal, cushion performance is solely dependent upon correlation
The structure size and machining accuracy of part overcome valve control buffering since hydraulic valve core valve pocket cooperation precision is high, hydraulic valve drives
Dynamic power is small cause spool be easy it is stuck cause buffer invalidation, cushion performance to rely on a series of defects such as control signal, safely may be used
It leans on, especially security reliability is good in high-speed overload application.
4, the utility model structure type is flexible: can be adjusted according to the requirement of applying working condition, cushion performance and installation space
Buffer the diameter ratio of converter and power cylinder；The channel connector either link block can also make connecting pipe,
Power cylinder can be eased up into red switch parallel operation into parallel, coaxial or vertical, inclination arrangement by link block on arrangement, can also passed through
The power cylinder red switch parallel operation that eases up is remotely locatable by connecting pipe, to reduce the limitation of cushion cylinder installation space, is applicable in difference
Use demand.
5, (the buffering converter and channel connector) adjustment of the utility model buffer unit and maintenance are easy: the utility model
Buffer unit due to being arranged in outside power cylinder, when needing to adjust buffer unit and safeguard, it is only necessary to buffer unit portion
Divide and carry out dismounting adjustment, does not influence power cylinder and equipment.
6, the utility model is easy to install and use: the power cylinder portion of cushion cylinder described in the utility model substantially with it is general
Logical oil cylinder is identical, and the mounting means of common oil cylinder can be used；Simultaneously as the cushion cylinder of the utility model have no need to change it is dynamic
Power cylinder interior structure, therefore can directly be produced into the cushion cylinder of finished product, can also by being converted to common oil cylinder,
It is easy to use.
7, the utility model long service life: the cushion cylinder buffer capacity foot of the utility model, reliable performance can be kept away
Exempt from the mechanical collision of power cylinder, effectively extends the service life of cushion cylinder.
[Detailed description of the invention]
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is that the utility model realizes that a kind of embodiment power cylinder of one-way buffer stretches out phase principle figure；
Fig. 2 is that power cylinder retracts phase principle figure in Fig. 1 embodiment；
Fig. 3 is buffer stage schematic diagram in Fig. 1 embodiment；
Fig. 4 is a kind of embodiment schematic diagram that the utility model realizes bidirectional buffering；
Fig. 5 is the first hydraulic fluid port of the utility model and the connection of the second hydraulic fluid port and the 6th hydraulic fluid port as oil inlet and oil return opening
Embodiment in oil inlet state principle figure；
Fig. 6 is the buffering converter of embodiment in Fig. 5 in oil return state schematic diagram.
[specific embodiment]
The utility model is further described with reference to the accompanying drawing:
Signified front (front end) refers to that one end that piston rod stretches out, rear (rear end) are (preceding with front in the utility model
End) opposite one end.
A kind of highly reliable cushion cylinder as shown in Figures 1 to 4 realizes a kind of implementation of one-way buffer for the utility model
Example, including power cylinder 1 ease 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 wraps
Include the power cylinder 10 being made of drive end bearing bracket 102, power cylinder tube 103 and rear end cap 105, setting at 103 center of power cylinder tube and
Connect across the power piston bar 101 of drive end bearing bracket 102 and with power piston bar 101 and matches with 103 inner cavity of power cylinder tube
Power piston 104, the inner space that the power cylinder tube 103 is formed with drive end bearing bracket 102 and rear end cap 105 is by power piston 104
It is divided into Liang Ge 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
The connection of 104 inner passage of piston；The first hydraulic fluid port A, the second hydraulic fluid port B and third hydraulic fluid port C are respectively arranged on the power cylinder 10,
First hydraulic fluid port 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 in pass
First reversal valve 4 can be switched to opening state when needing repairing by the first reversal valve 4 of closed state, can by the second hydraulic fluid port B
To carry out repairing to rodless cavity II.
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
At buffering 202 center of cylinder barrel and the damper piston bar 208 of drive end bearing bracket 207 is passed through, is connected with damper piston bar 208 and and cushion dashpot
The damper piston 203 and the buffering relatively-stationary buffing pad 205 of cylinder barrel 202 and be arranged in buffing pad 205 that 20 inner cavity of body matches
Interior bumper ring 206, the inner space that the buffering cylinder barrel 202 and drive end bearing bracket 207 and rear end cap 201 are formed is by damper piston
203 and buffing pad 205 (bumper ring 206) be divided into three chambers, i.e. conversion 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 oil liquid between the buffing pad 205 and buffering piston rod 208 slow
The buffer channel 211 passed through between chamber IV and oil back chamber V is rushed, is located to be equipped in cushion chamber IV on the damper piston bar 208 and delay
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 pass through damper piston bar 208 and buffing pad 205 (bumper ring 206) forms loop buffer channel 211,
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, the buffer channel when buffer body 204 moves forward, 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 is built-in or external check valve 401, the 6th hydraulic fluid port F connect 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 maintenance when, 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 between the power cylinder 1 and buffering converter 2 by channel connector 3, 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 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 oil inlet circuit, and the 6th hydraulic fluid port F accesses hydraulic through the second reversal valve 5
Stage, when the cushion cylinder is from the 5th hydraulic fluid port E oil inlet, the 6th hydraulic fluid port are stretched out in power piston bar 101 in system oil return circuit
F is in close state by the second reversal valve 5, after oil liquid enters cushion chamber IV and oil back chamber V, push damper piston 203 and
Damper piston bar 208 quickly moves backward, converts the oil liquid 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 101 fast forward movement of propulsion power piston 104 and power piston bar drives
Driven object body movement, 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 in close state, 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 converting is also closing 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, it is main buffering converter
Play transformation；
In conjunction with Fig. 2 and attached drawing 3, is retracted 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 outflow causes the pressure reduction of cushion chamber IV, and the pressure disequilibrium with 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, IV hydraulic oil of cushion chamber flow into oil back chamber V 211 circulation area of buffer channel gradually reduce, cushion chamber IV it is hydraulic
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 the moving component of power cylinder 1 and driven object body gradually slow down until stop
Get off, in this stage, buffers converter and mainly work 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, cylindrical body with throttling channel), throttling passage is formed 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 and forms a closing 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 oil liquid enters cushion chamber IV and oil back chamber V, pushes damper piston 203
And damper piston bar 208 quickly moves backward, the oil liquid of conversion chamber III enters connector channel 301 from the 4th hydraulic fluid port D and passes through
The rodless cavity II of third hydraulic fluid port C inflow power cylinder 1,101 fast forward movement of propulsion power piston 104 and power piston bar, and
Power piston 104 pushes the oil liquid 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 retracts 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 flows out from the second hydraulic fluid port B and has bar through exterior line and the first hydraulic fluid port A inflow
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 oil liquid of the conversion chamber III in a buffering converter 2 passes through connector channel 301 from its 4th hydraulic fluid port D
With third hydraulic fluid port C flow into power cylinder 1 rodless cavity II, 101 fast forward movement of propulsion power piston 104 and power piston bar,
And the oil liquid of rod chamber I is flowed out from the first hydraulic fluid port A and slow into another through corresponding connector channel 301 and the 4th hydraulic fluid port D
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): the 6th hydraulic fluid port
F had both been used as oil inlet or had been used as oil outlet, and the 6th hydraulic fluid port F is communicated 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: the floating trough 2051 for floating before and after bumper ring 206 is equipped in the buffing pad 205, 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
Pair slot on front side of 2052, the outside that boss 2061 is located on the bumper ring 206 is equipped with perforation front and back and is 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 the runner that oil liquid passes through, with buffer channel 211 together to fuel feeding in cushion chamber IV；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, stops oil liquid to pass through between boss 2061 and slot front side 2052, oil
Liquid mainly passes through buffer channel 211 and flows back into oil back chamber V from cushion chamber IV, and structure is simple, has preferable buffering effect
Fruit.
Above-mentioned channel connector 3 both can by link block 302 and with the integrally formed channel connector 301 of link block 302
It constitutes, can also be made of the pipeline with channel connector 301, the channel connector 3 is either link block can also be with
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 also be 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 utility model, not imposes any restrictions to the utility model, all
According to the utility model proposes design principle technical spirit any simple modification to the above embodiments, change and wait
It imitates structure change or converts working media (such as gas), in the protection scope for still falling within technical solutions of the utility model.
Claims (10)
1. a kind of highly reliable cushion cylinder, it is characterised in that: including the power cylinder (1) for connecting load, the power cylinder (1)
Outside be independently arranged buffering converter (2), the buffering converter (2) include buffering cylinder body (20), be arranged in cushion dashpot
In body (20) and it is pierced by the damper piston bar (208) of front end, is connected with damper piston bar (208) and is matched with inner chamber of cylinder block
Damper piston (203), be fixed on buffering cylinder body (20) in buffing pad (205), it is described buffering cylinder body (20) inner space by
Buffing pad (205) and damper piston (203) are divided into oil back chamber (V), cushion chamber (IV) and conversion chamber (III) from front to back, described
It converts chamber (III) and cushion chamber (IV), oil back chamber (V) is completely isolated, the damper piston bar (208) is from buffing pad (205)
It passes through, is formed with for oil liquid between the buffing pad (205) and buffering piston rod (208) in cushion chamber (IV) and oil back chamber (V)
Between the buffer channel (211) that passes through, be located in cushion chamber (IV) on the damper piston bar (208) and be equipped with toward nose motion
When the circulation area of buffer channel (211) can reduce to the buffer body (204) to form throttling passage, on the buffering cylinder body (20)
Equipped with access 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) working chamber and conversion chamber (III) for needing to buffer side for being connected to power cylinder (1) are provided between gentle red switch parallel operation (2)
Channel connector (3).
2. a kind of highly reliable cushion cylinder according to claim 1, it is characterised in that: the power cylinder (1) includes power
Cylinder body (10), the power cylinder (10) is interior to be equipped with the power piston (104) matched with its inner cavity, the power cylinder (10)
Inner space (II) two working chamber of rod chamber (I) and rodless cavity is divided by power piston (104), in the rod chamber (I)
Power piston bar (101) equipped with being connect with power piston (104) and for connecting load.
3. a kind of highly reliable cushion cylinder according to claim 2, it is characterised in that: the power cylinder (10) is equipped with
The third hydraulic fluid port (C) of oil is passed in and out for rodless cavity (II), the power cylinder (10) is equipped with second communicated with rodless cavity (II)
Hydraulic fluid port (B), the power cylinder (10) are equipped with the first hydraulic fluid port (A) that oil is passed in and out for rod chamber (I), the buffering cylinder body (20)
It is equipped with the 4th hydraulic fluid port (D) for passing in and out oil for conversion chamber (III), is equipped in the channel connector (3) for being connected to power cylinder
(1) the connector channel (301) of working chamber and conversion chamber (III).
4. a kind of highly reliable cushion cylinder according to claim 3, it is characterised in that: second hydraulic fluid port (B) is circumscribed with
The first reversal valve (4) being in close state, the third hydraulic fluid port (C) and the 4th hydraulic fluid port (D) are connected by connector channel (301)
It is logical.
5. a kind of highly reliable cushion cylinder according to claim 4, it is characterised in that: second hydraulic fluid port (B) and first
Hydraulic fluid port (A) is connected to by exterior line.
6. a kind of highly reliable cushion cylinder according to claim 4, it is characterised in that: first hydraulic fluid port (A) connects hydraulic
System or the conversion chamber (III) that another buffering converter (2) is connected to by another channel connector (3).
7. a kind of highly reliable cushion cylinder according to claim 1, it is characterised in that: the buffing pad (205) is equipped with
It can be matched with buffer body (204) to form the bumper ring (206) of throttling passage.
8. a kind of highly reliable cushion cylinder according to claim 7, it is characterised in that: the oil piping system includes the 6th oil
Mouth (F), the 6th hydraulic fluid port (F) communicate with oil back chamber (V).
9. a kind of highly reliable cushion cylinder according to claim 8, it is characterised in that: be equipped in the buffing pad (205)
For bumper ring (206) front and back and the floating trough (2051) of radial floating, the bumper ring (206) is located at inner ring edge and is equipped with forward
The annular convex platform (2061) of protrusion, the buffing pad (205) is equipped on front side of the slot opposite with boss (2061) (2052), described
The through-hole (2062) that outside on bumper ring (206) positioned at boss (2061) is equipped with perforation front and back and is connected to cushion chamber (IV),
Oil back chamber (V) toward when cushion chamber (IV) oil inlet, the bumper ring (206) is against on rear side of floating trough (2051), boss (2061)
On front side of slot between (2052), between bumper ring (206) and floating trough (2051), through-hole (2062) is collectively formed and passes through for oil liquid
Runner；Cushion chamber (IV) toward when oil back chamber (V) oil inlet, boss (2061) is pressed on front side of slot and forms closed-loop on (2052),
Oil liquid is stopped to pass through between (2052) on front side of boss (2061) and slot.
10. a kind of highly reliable cushion cylinder according to claim 1, it is characterised in that: the oil piping system includes being used for
5th hydraulic fluid port (E) of oil inlet, and for the 6th hydraulic fluid port (F) of the oil liquid outflow in cushion chamber (IV) and oil back chamber (V), it is described
5th hydraulic fluid port (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 oil
Mouth (F) is communicated with oil back chamber (V), and the second reversal valve (5) that can open and close oil circuit is connected on the 6th hydraulic fluid port (F),
For the oil back chamber (V) toward when hydraulic system oil return, the second reversal valve (5) is in the open state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820691446.7U CN208203698U (en) | 2018-05-09 | 2018-05-09 | A kind of highly reliable cushion cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820691446.7U CN208203698U (en) | 2018-05-09 | 2018-05-09 | A kind of highly reliable cushion cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN208203698U true CN208203698U (en) | 2018-12-07 |
Family
ID=64520390
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820691446.7U Active CN208203698U (en) | 2018-05-09 | 2018-05-09 | A kind of highly reliable cushion cylinder |
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| CN (1) | CN208203698U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518386A (en) * | 2018-05-09 | 2018-09-11 | 中山市智泰机电科技有限公司 | A kind of cushion cylinder |
| CN109599295A (en) * | 2018-12-12 | 2019-04-09 | 西安交通大学 | A kind of vacuum interrupter with oily buffer-type bellows |
| CN114183580A (en) * | 2021-10-28 | 2022-03-15 | 武汉船用机械有限责任公司 | Hydraulic control system of arc-shaped door of concrete bucket |
| CN108518386B (en) * | 2018-05-09 | 2024-04-26 | 中山市智泰机电科技有限公司 | Buffer oil cylinder |
-
2018
- 2018-05-09 CN CN201820691446.7U patent/CN208203698U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518386A (en) * | 2018-05-09 | 2018-09-11 | 中山市智泰机电科技有限公司 | A kind of cushion cylinder |
| CN108518386B (en) * | 2018-05-09 | 2024-04-26 | 中山市智泰机电科技有限公司 | Buffer oil cylinder |
| CN109599295A (en) * | 2018-12-12 | 2019-04-09 | 西安交通大学 | A kind of vacuum interrupter with oily buffer-type bellows |
| CN114183580A (en) * | 2021-10-28 | 2022-03-15 | 武汉船用机械有限责任公司 | Hydraulic control system of arc-shaped door of concrete bucket |
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