CN102985349B - Energy disperser - Google Patents

Energy disperser Download PDF

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Publication number
CN102985349B
CN102985349B CN201180020253.XA CN201180020253A CN102985349B CN 102985349 B CN102985349 B CN 102985349B CN 201180020253 A CN201180020253 A CN 201180020253A CN 102985349 B CN102985349 B CN 102985349B
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CN
China
Prior art keywords
storage tank
aperture
displacement component
energy disperser
actuating
Prior art date
Application number
CN201180020253.XA
Other languages
Chinese (zh)
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CN102985349A (en
Inventor
T.D.威廉斯
C.H.吴
E.C.斯特劳德
Original Assignee
Ta萨弗里有限公司
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Priority to GB1006713.0 priority Critical
Priority to GBGB1006713.0A priority patent/GB201006713D0/en
Application filed by Ta萨弗里有限公司 filed Critical Ta萨弗里有限公司
Priority to PCT/GB2011/050787 priority patent/WO2011131986A2/en
Publication of CN102985349A publication Critical patent/CN102985349A/en
Application granted granted Critical
Publication of CN102985349B publication Critical patent/CN102985349B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/28Buffer-stops for cars, cages, or skips
    • B66B5/282Structure thereof

Abstract

A kind of energy disperser (10), comprises the housing (11) of the hollow container being defined for hydraulic fluid; The hollow hydraulic fluid reservoir of adjacent vessel; At the displacement component (18) that the outside of energy disperser and the inside of storage tank extend via the first aperture (19) in storage tank; And the spring (16) acted between displacement component and the remainder of energy disperser.Displacement component (18) can move with wherein displacement component (19) in the inner side of storage tank, wherein displacement component (18) primary importance on the outside extending to housing (11) between the second place of inner side being retracted into storage tank, and displacement component (18) promotes towards primary importance by spring (16).Storage tank comprises one or more other aperture (28), when displacement component (18) moves to the second place from primary importance, hydraulic fluid flows to container from storage tank via aperture (28) in the mode of the movement of buffer displacement parts (18).

Description

Energy disperser
Technical field
The present invention relates to a kind of energy disperser being particularly useful for using in the well of elevator or elevator.
Common embodiment is the bottom place one or more energy disperser being arranged on this type of well, to meet the requirement of the fault of some type, these faults occasional during the operation of elevator occurs.
Background technology
There is the elevator of various design.In many in them, be suspended on pulley by means of cable by elevator car, cable is connected in heavier counterweight on the side of the pulley relative with the side of elevator car.The rising that electro-motor impels elevator car controlled and decline, because elevator car is connected in counterweight via cable, therefore make the quality of elevator car be essentially " centre ".
Dynamo-electric brake or mechanical brake act on elevator car, pulley or electro-motor (depending on accurate elevator design) selectively, to make elevator car rest in be installed on wherein corresponding to elevator or elevator is installed on At The Height selected by the flooring of the building near it or floor.When so limiting, elevator car is in the entering and/or leaving for passenger or goods of correct At The Height.
The supporting rope of elevator lifting car can support the quality of the quality being several times as much as whole elevator car, and in most countries, the other parts of cable and elevator must experience regular safety inspection.Therefore, occur that the probability of the wherein entirely ineffective accident that elevator car is fallen under gravity of cable is very small; And the maximum vertical speed that obtained by elevator car is determined generally through the rotative speed of motor.No matter the elevator car that the character of the force balance substantially of the elevator of cable support is actually them rises or declines all with the major cause of identical speed movement.
But yes known, cable extends sometimes, or the drg of elevator or control electronics package and can become defectiveness, the correct At The Height of elevator car not accurately at each flooring place is stopped.
If the step between the flooring of the floor that this type of event causes the ground of elevator car and elevator car to stop near it, then this type of event may be only inconvenient.
When elevator car position from its contiguous flooring the parked point of expectation enough away from not touch the release-push of elevator car door when stopping elevator car time, there will be more serious problem.As a result, the people inside elevator car just can not leave when not coming from extraneous assistance.
Potential maximum worry is, a reason for the above reasons, may collide when the bottom scope place of its stroke of elevator car in elevator declines too far away.
In many buildings, the base portion of elevator is all formed by cement concrete or another kind of hard material.If elevator car collides this type of base portion due to rope stretch or drg/control electronic device failure, then elevator car becomes impaired.
In addition, the shake produced inside elevator car or clash into can make passenger injured or damage by the goods of carriage lift.Even if do not have the physical injury for human or animal occurs during this type of collision, in many people, also define the worry to calamitous elevator accident strongly.Therefore, the uncontrolled shake of any type of elevator lifting car all can cause quite serious psychic trauma and worry.
For previous reasons, the object estimating the energy dissipation of the elevator car of the parked point of bottom lower than it in order to make to decline too far away, it is known that will install microscler energy disperser, this energy disperser will upwards extend from the base portion of elevator.
Elevator car generally includes the plate be fixed on the downside of it, and plate is aimed at the free upper end of energy disperser, to make plate engage energy disperser and compression buffer when the excessive descent of elevator car.This type of action impels the kinetic energy of the elevator car that to dissipate in predictable mode, makes the shake reduced to greatest extent inside elevator car, and also reduces risk elevator car self being caused to damage to greatest extent.
The energy disperser of an extensively known type is so-called water bumper.
This type of energy disperser uses in elevator, and is also used on rolling stock with heavier project, and is used as cushioning fender (being called beam in the U.S.) in the end of railroad track.
No matter use in elevator or use in railway applications, water bumper all comprises cylindrical housings usually, and one end of piston is stretched out from housing, and the other end of piston is positioned at case inside.
Lid is terminated at the external part of piston, and when such as being collided by lift car, covers the motion of translation power of generation being converted to the position that piston is retracted towards case inside.
During this action, after opening the valve in fluid flow passages, piston forces hydraulic oil to pass throttle nozzle.According to known physical principle, the motion of the throttling buffering piston of fluid, makes elevator car reposefully and little by little stops, and it can not be made to be subject to any damage or shake.
The Known designs of elevator energy disperser is be intended to the non-catastrophic collision that as prescribed alleviates the above-mentioned type.Given this, general situation is that buffer design becomes in order to repeatedly to use.For this reason, many known buffer design comprise retracing spring, and the object of retracing spring is absorbing collision and elevator car impels piston to retract its extended position after lifting away from energy disperser.In this type of energy disperser after operating spring, prepare to re-use.
Spring can adopt many forms, and they act on the piston of the inner side of housing mentioned above substantially.Some spring designs are very complicated, and comprise gas compression chamber, when colliding, will touch gas compression chamber.The complexity that known retracing spring is arranged is tending towards the weight and the cost that increase buffer design.
In addition, flow regulating valve and nozzle assembly are usually very complicated, and therefore relatively costly for manufacture.
Can according to the regulation of the use task adjustable rail buffer of this type of energy disperser and the costliness of cushioning fender and/or the component of complexity.On the other hand, the cost of the especially more difficult higher level adjusted in buffer of elevator, complexity and quality.This is not at least because this type of energy disperser is intended to only operate very infrequently when defect as described above occurs.
In addition, there is total pressure to reduce the cost of building element at least some class of construction trade.
Therefore, exist and need to produce a kind of actv. elevator energy disperser, it provides good performance when needed, causes cost savings simultaneously, and this can be caused by the use task specified infrequently.
The fugitiveness of piston during another problem of buffer of elevator relates to shake-up.In many countries, rules and regulations piston only can from straight line longitudinal stroke minimum depart from.Therefore, it is desirable that overcome non-longitudinal and move stable plunger.
In relatively long energy disperser, just likely provide sleeve, sleeve lap in the inner side of energy disperser to overcome the bar that N/R shifted laterally (side-to-side movement) carrys out stable plunger on its stroke all or most of.
But, in buffer of elevator, usually there is not the space for providing longer overlapping stabilizer component in an economical manner.
As alternative, likely with very high precision and closely tolerance construct energy disperser simply.But this is also expensive, and can increase the weight of energy disperser.In low cost elevator buffer design, these two kinds of losses may be unacceptable.
Summary of the invention
According to the present invention, in wider, provide a kind of energy disperser, it comprises the housing of the hollow container being defined for hydraulic fluid; The hollow hydraulic fluid reservoir of adjacent vessel; Via the displacement component that the first aperture in storage tank extends between the outside and the inside of storage tank of energy disperser; And the spring acted between displacement component and the remainder of energy disperser, the primary importance that displacement component can extend relative to the outside of housing in the inner side of storage tank, wherein displacement component and wherein displacement component are relatively retracted between the second place inside storage tank and extend, spring promotes displacement component towards primary importance, and storage tank comprises one or more other aperture, when displacement component moves to the second place from primary importance, hydraulic fluid in the mode of the movement of buffer displacement parts from storage tank via other orifice flow to container; Wherein displacement component comprises the free end away from storage tank; Wherein spring is coil spring, and action of the spring is at described free end and housing or be connected on housing between element; And the inside of wherein energy disperser comprises stabiliser, stabiliser stops the non-longitudinal of displacement component to move in the mode increased towards mobile the increasing of the second place with displacement component.
The advantage of this device is that it can construct and cheaply as object relatively light in weight.
This part is due to easily can provide with the form of conventional helical spring of low cost buying the spring between free end and housing (or the element be connected on housing) being configured to act on displacement component.
In addition, the appointed place of spring means and any part of spring will not be placed in the inner side of housing or storage tank.This means again the structure very economical that can make energy disperser then, because such as do not need to provide the costliness by the chamber of gas spring and the chamber isolation of hydraulic buffering mechanism are opened to seal.
In addition, this also means the diameter (if being configured to cylindrical form like that in preferred embodiment as is described below) that can reduce energy disperser as much as possible to greatest extent, considers the performance requriements of energy disperser simultaneously.Which reduce quantity of material (that is, the steel in preferred embodiment) required in the manufacture of energy disperser, thus reduce further its cost and weight.
In force, spring exposes unimportant on the outside of device, because the user for elevator, and generally can not close to buffer of elevator (so there is not the danger intervened by user); And in addition, even if coil spring to expose in position do not touch for a long time after also will work.
As preferably, housing and storage tank are respectively or comprise hollow circuit cylinder respectively, and the diameter of the inside of housing exceedes the diameter of the outside of storage tank, storage tank is positioned at the inner side of housing at least in part, take Bedpan as the circle holding storage tank in its length at least partially.
This kind of layout is advantageously very compact.In addition, by component and especially storage tank is configured to cylinder and means that they can stand heavily stressed, especially stands those heavily stresseds occurred during operation buffer.
Easily, housing and storage tank and concentrically with respect to one another and be parallel to and extend each other, and storage tank is positioned at the inner side of housing roughly completely.
This layout also contributes to bringing compactedness and light weight on energy disperser.
In a preferred embodiment of the invention, displacement component is cylindrical piston, a part for cylindrical piston is accommodated in the inner side of storage tank slidably, be communicated with fluidly to shift with the inwall of storage tank, displacement component is impelled via the positive transfering fluid in one or more other apertures towards the movement of the second place.
Compared with prior art, this layout significantly simplify energy disperser of the present invention.
Specifically, result storage tank can be configured to gauge line, does not have movable part in gauge line, and wherein aperture is opened all the time.This means not need to there is relatively costly calibrate valve in energy disperser of the present invention, calibrate valve is known in the device of prior art.
Easily, stabiliser comprises the circumferential collar around bar or piston, and the diameter of the collar is variable; And bar or piston comprise one or more first actuating surface be connected thereto, when bar or piston move towards the second place, first actuating surface can with cover engagement of loops to impel cover ring extension, this type of expansion is resisted, to stop the non-longitudinal of piston to move by one or more surfaces in addition of the outside being positioned at the collar.
As preferably, circumferential collar is formed by two or more ring-type sections, and when being engaged by one or more first actuating surface, ring-type sections can be expanded away from each other.
In a preferred embodiment of the invention, the first actuating surface or each the first actuating surface are one or more inclined-plane or comprise one or more inclined-plane.
As preferably, the collar comprises one or more storage surface, and storage surface comprises the inclined-plane that can be engaged by described actuating surface.
Easily, overcome to vertically move by one or more shoulders relative with the power be applied on the collar by the first actuating surface or each the first actuating surface and limit the collar.
As preferably, the collar comprises one or more reaction surface, reaction surface can be engaged by one or more other actuating surface, the place engaged between one or more reaction surface and other actuating surface impels the collar to expand at the three unities place, and the place end wise that this place engages along piston with by described first actuating surface or actuating surface described in each is spaced apart.
Easily, the first actuating surface or each the first actuating surface and/or other actuating surface or each other actuating surface are formed as the actuating surface circle around bar or piston.
Preferably, described at least one, the diameter of actuating surface circle is variable.
In addition, as preferably, energy disperser of the present invention comprises the one or more discontinuities being arranged in the described actuating surface circle allowing the change of its diameter.
Seal to provide actv. and therefore the just transfer of hydraulic fluid is as described above provided, in a preferred embodiment of the invention, piston is included in one or more piston rings of the inner side of storage tank, and piston ring and the inwall of storage tank become slidably fluid to shift to contact.
Any material in the applicable material of the certain limit expected can be made up of such as those of skill in the art by piston ring.
Be easily, the inside of storage tank is microscler, and comprise multiple other aperture, aperture limits the isolated aperture in groups extended along storage tank, displacement component covers the other aperture in aperture in groups in order when moving towards the second place, make the buffering of the movement of displacement component move with displacement component towards the second place and increase.
The other aperture of such formation is it is beneficial that tending towards being compressed to further by displacement component than low energy collisions in the meaning in storage tank in high energy collision, and energy disperser of the present invention is conditioned.During collisional quenching, displacement component covers and aperture more other in stopping aperture in groups continuously.This little by little decreases the other orifice area of gathering, shifts hydraulic fluid by displacement component via orifice area.Thus, the buffering effect of energy disperser increases, and have compressed displacement component further.
More specifically, in a preferred embodiment of the invention, other aperture limits the spiral pattern in the other aperture of the periphery be arranged to around storage tank.Other aperture and the length variations of spacing each other along storage tank.
These aspects of other orifice pattern mean: first, and all sidepieces of storage tank shift hydraulic fluid equably.The stress that this is then balanced again suffered by the wall of displacement component and storage tank.
The second, the pattern in preferably other aperture means when displacement component is advanced along storage tank, adds buffering effect by the increment of change.The character increased gradually produced in buffering effect means the design that can simplify storage tank and displacement component, and the design of storage tank and displacement component is produced by relatively simple engineering calculation, the design of storage tank and displacement component simultaneously can be used for the elevator car quality cushioning certain limit.
Advantageously, in the use of energy disperser, multiple other aperture vertically extends between the aperture of bottom and the aperture of the other of at least one the top; And when displacement component occupies its first extended position, container holds the hydraulic fluid of the level higher than the other aperture of the top or the other aperture of each the top.
The volume of container (as specified mainly through its diameter) can be selected to cause this fill level of hydraulic fluid.In a preferred embodiment, Selective filling level, generally not use the other aperture of the top or the other aperture of each the top to come for transfering fluid in a large number during the compression stroke of displacement component.As an alternative, as described herein, the other aperture of the top or the other aperture of each the top recharge the object of storage tank when displacement component extends under the action of the spring after it is beneficial that can be used for colliding.
For the ease of this effect, optionally, the other aperture of the top in groups in aperture or the other aperture of each the top are greater than remaining aperture in aperture in groups.
In a preferred embodiment of the invention, storage tank and housing are at least one end place and adjacent to each other, and piston directly extend out to the outside of housing via the first aperture from storage tank thus.In addition, optionally, free end comprises flange fixed thereon, and action of the spring is between flange and housing; And further alternative, flange comprises skirt section, and skirt section is at first end place around spring, and housing comprises the part that diameter reduces, the part that the second end ring of the spring relative with first end reduces around diameter, and this layout makes keep-spring relative to energy disperser fixing.
Preceding feature contributes to providing compact structure, the manufacture of this structure and assemble relatively cheap.
As preferably, energy disperser of the present invention comprises the switch be fixed on housing and the switch actuator be fixed on displacement component, makes when displacement component moves from primary importance towards the second place, switch actuator operating switch.
This type of switch provides the safety of the operation of the energy disperser of reinforcement.Switch can be connected on circuit, and when compression buffer, circuitry cuts is to the energy supply of elevator motor.In the design of many elevators, this has automatically touched again the drg of elevator then, such as, by release magnet stopper baffle plate.
Easily, switch actuator is elongate bars or comprises elongate bars, and elongate bars extends from displacement component towards switch, so as with when displacement component moves towards the second place with the mode engagement switch impelling it to operate.
This feature of the present invention can be designed to advantageously to guarantee only to need the compression of a small amount of energy disperser, so that touch switch and then cut off powered motors again.
Accompanying drawing explanation
Now hereinafter by the mode of limiting examples, carry out reference to describe the preferred embodiments of the present invention in view of to accompanying drawing, in the accompanying drawings:
Fig. 1 is the longitudinal cross-section view of the energy disperser that essential characteristics more of the present invention are shown;
Fig. 2 is the view being similar to Fig. 1, shows some optional feature of the present invention;
Fig. 3 shows the stabiliser forming a part of the present invention with fragmentary sectional view;
Fig. 4 A and Fig. 4 B shows the operation of the device of the Fig. 3 in conjunction with additional, optional features of the present invention; And
Fig. 5 shows the circumferential collar of the part forming the stabiliser shown in Fig. 3 and Fig. 4 with plan view.
Detailed description of the invention
Referring to accompanying drawing, what energy disperser 10 comprised hollow is essentially prismatic cylindrical metal (such as, steel) shell 11, and the empty internal 12 of shell 11 is defined for the container of hydraulic fluid (it is invisible in the accompanying drawings).
Housing 11 is by cylindrical wall 11a; The metal base plate 13 bottom being in use in energy disperser 10 and the metal end 14 being in use terminated at its upper end limit.
End cap 14 comprises flanged skirt portion 14a, and the flange 14b of skirt portion 14a mates with the upper end of fluid hold mode with cylindrical wall 11a.The remainder of skirt portion 14a has the diameter of reduction compared to the external diameter of cylindrical wall 11a.The object of this swedged part of skirt portion 14a is to hold coil spring 16 in the mode described in more detail hereinafter.
Substantially the prismatic cylindrical upright gauge line 17 of hollow is positioned at the inner side of housing 11, so that concentric and extend between base plate 13 and end cap 14 in the inside of energy disperser 10 with housing 11.The empty internal of gauge line 17 is defined for the storage tank of hydraulic fluid.
Such as, gauge line 17 can by metal as steel be made, and this metal can stand the remarkable circumference stress that can occur during the operation of energy disperser 10.Other material except the metal pointed out for component also may be within the scope of the invention.Those skilled in the art will know feasible alternatives.
By steel disk 17a at the place bottom of gauge line sealing gauge line 17, steel disk 17a is equipped with plastics (or similar material) sealing member 17b.As the alternatives of this compound structure, in order to seal the object bottom of gauge line 17, such as, the weld plate omitting plastic seal is likely considered.
For the displacement component of the form of microscler round section piston 18 extends along its length relative to energy disperser 10.
In the pre-using state of the energy disperser in FIG, piston 18 is partly accommodated in the inside of gauge line 17, and wherein its most length is stretched out via the through-pore 19 be formed in the top of end cap 14 in the outside of energy disperser 10.Due to the upper end of housing 11 and the adjacent structure of gauge line 17, piston directly extend out to the outside of energy disperser 10 substantially via aperture 19 from the inside of storage tank.Sealing member as elastomeric seal 21 shank around piston 18 near aperture 19, any hydraulic fluid is wherein remained in the container that limited by housing 11.
Locate bottom at it, piston 18 end is connected in piston head 22, and piston head 22 contacts with the inwall of the storage tank limited inside gauge line 17 with becoming slidable sealing.Be accommodated in corresponding complemental groove 24a by using, one or more annular piston ring 23a, 23b in 24b realize the slipper seal of the piston head 22 in gauge line 17, and groove 24a, 24b extend around the periphery of piston head 22.Piston ring can provide any material in the material of the certain limit of the object of the slipper seal of the above-mentioned type to make by known being suitable for.In a preferred embodiment of the invention, they are made of cast iron, and are suitably processed by cast iron and provide desired oily control effects.
If desired, plural piston ring 23a, 23b can be provided.In theory, also likely only provide single piston ring, but preferably use two these type of rings as shown.
As shown in fig. 1, define the piston head 22 above piston ring 23, comprise annular ring district 42, limit annular ring district 42 by the annular groove of processing in the surface of piston head 22.Ring district 42 and the piston ring between them 23 provide in the upward direction through the predictable leakage flow of the hydraulic fluid of piston head 22, cause the slipper seal of abundant level under reasonable cost.
At its topmost place, the free end of storage tank outboard piston 18 is terminated in top board 26, and top board 26 is essentially the rosette of on even keel extension or the disk of other rigid material.The diameter of top board 26 is roughly the same with the external diameter of housing 11.
Top board 26 comprises the ring-shaped skirt 27 of suspension downwards, and skirt section 27 extends shorter distance towards housing 11.Be retained on the free end of piston 18 by the mode of spring washer 29 by top board 26 maintaining rigidness, the projecting collar 29a of spring washer 29 is resiliently engaged and is engaged in the annular groove 31 of the end being formed as adjacent piston 18.As a result, spring washer 29 presents the circle 29b in outstanding V-arrangement cross section downwards, and this circle 29b is accommodated in annular recess 32, and annular recess 32 is formed in the upper surface of top board 26.Spring 26 advances recess 32 to contact with V-arrangement cross section circle 29b, to form the sane of rigidity but the maintaining body of low cost comes for top board 26.
The coil of spring 16 has constant diameter along its length.The diameter of coil will be selected, make in use, locate bottom at it, spring 16 can fitly be seated in the part that the diameter that limited by end cap 14 reduced, so that the coil of its bottom is resisted against from the outside flange 14b in the direction extended bottom of skirt section 14a.
At its topmost place, spring 16 as shown against the downside of top board 26, and overcomes shifted laterally by skirt section 27 and carrys out restraining spring 16.Over its length, spring 16 is around a part for piston 18, and this part of piston 18 is stretched out on the outside of housing 11.
Therefore, will be apparent from, spring 16 by the mode contacted with end cap 14 act on represented by piston 18 between displacement component and the remainder of energy disperser.Any trend be compressed to by piston 18 in the inside of gauge line is stoped by the power of the spring so acted on; But the buffering effect that this power not responsible energy disperser 10 can present.
On the contrary, causing with the dissipate buffering effect of the crash energy be subject to by top board of the mode specifically described hereinafter is the result of the structure of gauge line 17.
Define gauge line 17, comprise a series of multiple through-pores in addition extended along its length, multiple through-pores are in addition arranged to the spiral pattern along gauge line 17 to downward-extension, and have marked four 28a, 28b, 28c, 28d wherein in Fig. 1.
In other embodiments of the invention, wherein the length of gauge line 17 and the length of piston 18 are different from shown those, can exist than those shown more or less other aperture 28a, 28b etc.
In a preferred embodiment of the invention, the spiral pattern in aperture is arranged so that there is the aperture density increased, and therefore there is larger region, fluid can flow via the lower end of larger region towards gauge line 17.The object of this aspect of the invention is the optimum performance providing energy disperser 10 when using together with the elevator car quality of certain limit.
Each other aperture 28 is formed as throttle nozzle, throttle nozzle extends from the inside of gauge line 17 and leads to container, to experience originally known energy dissipation throttle process by the effect of piston 18 as described below via any fluid that other aperture promotes.
In the preparation using energy disperser 10, at its final assembly process, filling containers and gauge line 17 is come via filler plug 34 (visible in Fig. 2), the opening of filler plug 34 releasedly in closed end cap 14, wherein hydraulic fluid such as oily (not shown) reaches only higher than the degree of depth of piston ring 23.Because other aperture 28 allows the fluid between storage tank with container to be communicated with, therefore the level of oil in these two chambers is with becoming equal during oily fill buffer.
After by this measure filling containers and storage tank, such as, the mode by threaded plastic plug is closed and is filled opening, and if desired, threaded plastic plug can comprise the sounding rod 36 of the downward suspension for the purpose of for the fill level of inspection energy disperser.In this regard, importantly guarantee energy disperser to be filled to correct level.If the hydraulic oil added is not enough, make the level of oil lower than an aperture in other aperture 28 in groups, then this type of aperture can not provide any pooling feature during the operation of device, until piston ring 23 declines and reaches pasta.
On the other hand, required is guarantee in the container limited by housing 11, a certain amount of gas (namely, air) be present in hydraulic fluid level above, because during the operation of energy disperser, this type of fluid is transferred to the container limited by housing 11 from the storage tank limited by gauge line 17.If container is all filled with (incompressible) hydraulic fluid, during operation, energy disperser will lock immediately and not allow further piston stroke.This type of event can cause housing 11 excessively to pressurize, and runs into the stress of the stress exceeded for its design.
Once filling activity completes, then energy disperser is ready to use substantially.After this, such as the usual mode by stud is screwed onto the appropriate location in elevator, and stud is cast in (normally) concrete material of bottom, to protrude upward.The aperture be formed in base plate 13 with the pattern of the pattern registration with post allows to use the combination of nuts and washers to come with the directional at-tachment energy disperser 10 shown in scheming.
Decline in well as far as being enough to make its contacts-side-down top board 26 at elevator car, this impels compression buffer 10, so that piston is retracted in the storage tank limited by gauge line 17.
During this action, this type of retraction will only occur when the power given by elevator car exceedes the power of spring 16 certainly.But the power of spring has relatively low value, because as hereafter set forth, the main purpose of spring 16 is to make piston 18 return to appreciiable extended position in Fig. 1 after being removed from its upper end by elevator car.
As set forth, assuming that the power given by elevator car is enough to impel compression buffer, then piston head 22 moves down inside storage tank.
Due to the reason of the effect in piston ring 23a, 23b and ring district 42, this impels piston head 22 to force oil in storage tank via aperture 28a, and 28b, 28c, 28d outwards enter container from storage tank.
As specified, the design in each aperture 28 makes the throttling providing hydraulic fluid during this process.Therefore, in a manner known per se by the crash energy of transformation of energy dissipation elevator car.
As from Fig. 1 very clearly, when being in its complete extension state, piston is only from very short-range At The Height piece sealing reservoir above the 28a of aperture, the top.Result, the piston 18 only very little movement in a downward direction that the power given produces impels seal ring 23 through the aperture 28a of the top, and with the seals hydraulic fluid in storage tank, although make after this piston 18 move further towards the bottom of energy disperser 10 also do not make flow restriction by those other apertures.
As a result, after the movement of beginning piston 18 soon, decrease the number in other aperture 28 in groups, make the number being less than maxim can be used for making hydraulic fluid throttling.
This means then after piston ring 23a, 23b are passed down through the other aperture 28a in groups of the top, and the resistance of the hydraulic fluid flowing in energy disperser little by little increases due to the spiral pattern in other aperture 28.
Piston 18 moves to impel subsequently further in a downward direction and covers more and more other aperture 28 similarly, and wherein result is that the resistance flowed increases further.Then, people it is seen that, the additional of piston 18 moves down the further increase impelling resistance to flow in order, until piston head 22 finally forces hydraulic fluid only via the other aperture 28d of the bottom shown in figure.
Because this arranges, therefore the resistance of energy disperser to the downward application force applied increases with the increase of amount of compression.In other words, automatically the increasing with being in proportion of the buffering effect of energy disperser 10 and the power of applying.
When forcing hydraulic fluid to enter in storage tank via aperture 28, the level of fluid is wherein elevated in air volume mentioned above.Because air is compressible, therefore the air volume in container can allow the increase of this amount of hydraulic fluid.
Clearly, the institute be not applied on top board 26 all will be enough to compression buffer effectively, and the other aperture group 28d of only bottom is finally operated.When power is less, can covers at piston head 22 and reach balance position before closed other aperture group 28c or even 28b (depending on the circumstances).
After removing elevator car from top board 26, the power of spring 16 works and makes piston 18 turn back to its complete extended position as shown in Figure 1.
During this process, some hydraulic fluids just likely enter in storage tank via other aperture group 28d, 28c and 28b again; But in view of the viscosity of typical hydraulic fluid, via these routes, the part that only can realize storage tank is recharged.
On the other hand, the mean diameter in each the other aperture in the group 28a of the top is greater than the mean diameter in each the other aperture in group 28b, 28c and 28d.Result, when spring 16 makes piston 18 slippage, make seal ring 23a, 23b passes through in the upward direction, when making the hydraulic fluid in container arrive the top of the level of the other aperture group 28a of the top, displaced the hydraulic fluid in container by the compression stroke of energy disperser at this, hydraulic fluid can freely flow back in storage tank under gravity, until the level in container and storage tank is again equal.
It is clear that the aperture owing to being restricted to expansion, the flowing of other aperture group 28a to hydraulic fluid during downward (compression) stroke of piston 18 of the top provides relatively little resistance.But, this is less on the impact of the overall resistance for compression provided by energy disperser, because as prescribed, along piston 18 in downward direction only very after short travel, the other aperture group 28a of the top becomes by seal ring 23a, 23b covers, and makes not force hydraulic fluid by them further during the remainder of downward piston movement.
An optional improvement project of the present invention is in conjunction with discharge orifice 33, and discharge orifice 33 provides the upper end of storage tank to be communicated with the gas between container.Result, can by any gas discharging in the upper end of container to the region of the storage tank at piston head 22 rear of reach downwards (the shank 18a due to piston 18 has the diameter of the diameter being less than piston head 22, therefore this effect is possible) between the compression period of energy disperser.Result, owing to there is the reason of the relatively large volume be made up of the part of container and the part of storage tank respectively there, therefore there is the requirement of reduction to allow gas compression power for energy disperser 10, when the level of hydraulic fluid rises in a reservoir, gas can be transferred in the part of container and the part of storage tank respectively.
Fig. 2 shows the energy disperser of the embodiment be similar to very much in Fig. 1, but eliminates discharge orifice 33.On the other hand, the layout of Fig. 2 comprises other optional features more of the present invention.
Fig. 2 shows plastics filler plug 34 mentioned above, and filler plug 34 is accommodated in the opening in end cap 14 threadably.Hydraulic fluid level sounding rod 36 suspending to the inside of container downwards bottom from filler plug 34, as prescribed, sounding rod 36 can be used for the object of inspection hydraulic fluid fill buffer to correct depth.As from Fig. 2 very clearly, the free end of the bottom of sounding rod comprises indicant part 36a, and when being screwed into by filler plug 34 in its aperture in end cap 14, indicant part 36a in use terminates at best hydraulic fluid level place as described above.
But another is chosen as the form of angle staple 37, angle staple 37 near the 14a of skirt section around end cap 14 so that be resisted against flange 14b above on.
When assembling energy disperser 10, spring 16 advances angle staple 37 and flange 14b firm contact.
Angle staple 37 supports the switch enclosure 38 comprising electric mechanical switch in a cantilever fashion on the side of energy disperser 10.
Switch actuation rod 39 is given prominence to downwards from the skirt section 27 of top board 26, to enter in switch enclosure 38 from top via the aperture be formed in its uppermost surface.
Switch actuation rod 39 is included in its switch activation parts 41 located bottom, and when the downward compression starting piston 18 is mobile, switch activation parts 41 are positioned to the switch in order to engage and in operating switch box 38.
This generic operation of switch can make relay trip, and relay cuts off the energy supply of lift motor immediately and/or touches lifting drg.As a result, energy disperser 10 of the present invention easily can comprise the feature of reinforcing security, and this feature almost becomes immediately and can operate after the compression of energy disperser 10 starts.
As from Fig. 2 it is clear that the length of switch actuation rod 29 is substantially equal to the length of piston 18.As a result, flange plate 37 comprises aperture, via aperture guide switch actuator 39, can guarantee the shake-up of switch, and thus allows move down piston 18 further after touch switch.
Referring now to Fig. 3 to Fig. 5, show a kind of layout, by this layout, can realize overcoming N/R shifted laterally according to the present invention or other non-longitudinal moves stable plunger bar 18.
Energy disperser 10 in Fig. 3 to Fig. 5 is similar to the energy disperser 10 in Fig. 1 and Fig. 2 in its general layout and function aspects.But, in use, topmost locate, by change energy disperser 10 to comprise stabiliser 43 at it.
When towards the second place mobile piston bar 18 limited herein, stabiliser 43 operates.
Stabiliser 43 is made up of circumferential collar 44, in a preferred embodiment of the invention, is processed into (e.g., " Delrin ", " Kemetal " or have the aluminum alloy ") circumferential collar 44 of relatively high modulus of elasticity by light metal.But when constructing the collar 44, it is also possible for comprising other material nonmetallic.
As shown in Fig. 5 of the plan view for the collar 44, in a preferred embodiment of the invention, the collar is formed by two semi-circular sections 44a, 44b, and when sections 44a, 44b being placed in as shown each other, sections 44a, 44b limit whole circle 44.
As preferably, process ring-type sections 44a by solid annular thing, 44b, but other method forming circle 44 is also possible.In addition, likely by being greater than the shown sections 44a of two, the number of 44b forms circle 44.
Have nothing to do with the careful design of the collar 44, sections 44a, 44b limit the marginal fact and mean by making sections 44a, and 44b stretches to increase the diameter of the collar 44 with being spaced apart from each other.
In a preferred embodiment of the invention, realize this type of by the actuating surface 47 that the first actuating surface 46 is other with (optionally) to stretch.
Actuating surface 46,47 are formed as corresponding annular voussoir, and as shown in Figures 3 and 4, each voussoir is around piston rod 18.
More specifically, the first actuating surface 46 is defined as inclined-plane 48, in figs. 3 and 4 in appreciiable view, bevel direction is downward-sloping.
In a preferred embodiment of the invention, limit the circle 46a of wedge-shaped surface 46,47,47a is segmentation also, and such as, the semi-circular half portion of separating by two is divided and formed; Or may be formed by the part annular segment of more more number.This means these circles 46a, the internal diameter of 47a is collapsible during the operation of energy disperser, will be present in any gap between the inside face of circle and bar 18 in other cases to occupy.This layout contributes to the lateral stability improving energy disperser 10.
But have fixed diameter even if to limit the circle of actuating surface 46,47 and be entirely rigidity, energy disperser 10 also will enjoy the stability of improvement.Wherein each circle be formed as one object or be assembled into one object this type of arrange within the scope of the invention.
Another modification within the scope of the invention also relates to restriction actuating surface 46, the circle of 47 is formed as the object of, each this object comprises through corresponding circle 46a, the material of 47a run through notch otch, to allow circle 46a, the internal diameter of 47a and the changeability of external diameter, avoid simultaneously and must assemble circle 46a by independent part annular segment, the potential assembling inconvenience of 47a.
In this type of embodiment, the material of circle 46a, 46a at least resiliently will can be deformed into extreme degree.In this type of embodiment, circle or at least one in them can be made up of plastic material (but metal is also possible).
In one and same energy disperser 10, dissimilar combination is possible at least in theory.
First actuator 46 allow inclined-plane 48 be limited to the collar 44 upper end corresponding towards on the place place that engages, inclined-plane 49 around bar 18.
As from Fig. 3 and Fig. 4 very clearly, the bar 18 power being passed to the first actuator 46 orders about aforementioned chamfers 48 towards the movement of its second (retraction) position, and 49 enter and engage with link each other.
This impels the appearance of wedging effect, and this makes the collar 44 expand by the separation of collar sections 44a, 44b again then.
Therefore, collar sections 44a, 44b is coupling spool 51 on its radially-outer surface, and sleeve 51 is fixed in the open upper end of container 12.Bar 18, first actuator 46, wedging action between the collar 44 and sleeve 51 secure the accommodation of bar 18 along non-longitudinal direction, thus make it stablize in an efficient way, and which only occupies length relatively short in energy disperser 10.
At its (as shown) place bottom, sleeve 51 comprises the inside shoulder in direction 52.The lower end abutment shoulder 52 of the collar 44, shoulder thus stop the collar 44 move down under the impact of downward application force, this downward application force transmits from moving down bar 18 via the first actuator 46.
Owing to being threadedly engaged with the top board 61 of energy disperser 10, prevent sleeve 51 from self moving down.Outward flange 53 with catch hold lip ring 62 mode against top board 61, lip ring 62 contributes to making device leakproof.But other sealing arrangement may be within the scope of the invention.
Energy disperser 10 shown in Fig. 3 and Fig. 4 comprises the other actuator 47 for optional feature.
Other actuator 47 is substantially the same with the design of the first actuator 46, and just it is installed along contrary orientation, so that the direction making its inclined ramp 54 as shown upwards.
In illustrated embodiment of the present invention, define the collar 44 of the present invention, the collar 44 comprises the inclined-plane 56 facing down and at its lower end.
This layout makes when moving down the collar 18, and the impact by the first actuator 46 causes, and orders about lower inclined plane 54, and 56 links entered as shown engage.
This action provides the expansionary force of its lower end acted on the collar 44.Therefore, if having other actuating surface (inclined-plane 54) and the feature on inclined-plane 56, then the expansion of the collar 44 can be caused equably with lower end at its upper end.But the use of two actuators 46,47 is not enforceable; And if desired, likely only use the upper end being placed in sleeve 51, lower end or the incompatible expansion realizing the collar of list docking along the part place of sleeve ramp.
Sleeve 51 at its upper end place is formed and comprises pretensioner, and pretensioner is also optional.
The form of circle 57 in pretensioner adopts, interior circle 57 is fixed by the flat head screw 58 of the lateral action in the other open upper end of sleeve 51 as shown.Downward application force is given the first actuator 46 by interior circle, thus provides certain expansionary force, and expansionary force acts on the collar 44, thus appropriateness is firmly ordered about it and entered in sleeve 51.Interior circle also prevents the open upper end dropping out energy disperser 10 for the part described in Fig. 3 to Fig. 5 simply.
Fig. 4 A and Fig. 4 B show piston rod 18 respectively in its primary importance (Fig. 4 A) and the second place (4B) time stabiliser 43.
Fig. 4 A and Fig. 4 B also shows another optional feature of the present invention with the form of middle springs flange 59.
Along a part of holding flange 59 of piston rod 18.As a result, likely when not must installation length match spring 16 structure comprise the energy disperser 10 of process for long piston rod 18.As shown, intermediate flange 59 allows use two spring 16a, 16b, and when piston rod 18 occupies its primary importance, each spring 16a, 16b extend in the length of the general half of piston rod 18.
As shown, spring 16a extends between the lid 14 and intermediate flange 59 of energy disperser 10; And spring 16b extends from intermediate flange 59 to top board 26.Flange edge, the lid edge of 14 and the edge of top board 26 are shaped to keep coil spring 16a, 16b.Flange and layout of spring provide stable layout cheaply.
Generally, energy disperser of the present invention represents the marked improvement of the prior art of elevator cushion apparatus.Although be described its use in conjunction with the elevator car of Cable suspension herein, but it is clear that, this type of energy disperser can easily be used in the elevator car of other type, as but be not limited to, used being bearing in hydraulic ram or other mechanism in those.
In addition, energy disperser can be manufactured in the length of certain limit and diameter, to be applicable to the accurate application in consideration; And as specified, can consider that the material of certain limit comes for the manufacture of component part herein.
Enumerating or discussing of the document clearly formerly announced very much in this specification sheets should be regarded as the part of the literature as prior art or the general knowledge as common practise.

Claims (23)

1. an energy disperser, comprises the housing of the hollow container being defined for hydraulic fluid, the hollow hydraulic fluid reservoir of contiguous described container, the inside of described storage tank is microscler, at the displacement component that the inside of the outside of described energy disperser and described storage tank extends via the first aperture in described storage tank, and the spring between the remainder acting on described displacement component and described energy disperser, described displacement component can in the inner side of described storage tank, the primary importance that described displacement component extends relative to the outside of described housing wherein moves between the second place of inner side being retracted into described storage tank with wherein said displacement component, described displacement component promotes towards described primary importance by described spring, and described storage tank comprises one or more other aperture, described other aperture is defined as the isolated aperture in groups extended along described storage tank, when described displacement component moves to the described second place from described primary importance, described displacement component covers the other aperture in aperture in groups in order when moving towards the described second place, hydraulic fluid in the mode cushioning the movement of described displacement component from described storage tank via described other orifice flow to described container, the buffering of the movement of described displacement component moves with described displacement component towards the described second place and increases, wherein said displacement component comprises the free end away from described storage tank, wherein said spring is coil spring, and described action of the spring is at described free end and described housing or be connected on described housing between element, and the inside of wherein said energy disperser comprises stabiliser, described stabiliser stops the non-longitudinal of described displacement component to move in the mode increased towards mobile the increasing of the described second place with described displacement component.
2. energy disperser according to claim 1, it is characterized in that, described housing and described storage tank are respectively or comprise hollow circuit cylinder respectively, and the diameter of the inside of described housing exceedes the diameter of the outside of described storage tank, described storage tank is positioned at the inner side of described housing at least in part, so that described container is the circle holding described storage tank in its length at least partially.
3. energy disperser according to claim 2, is characterized in that, described housing and described storage tank with concentrically with respect to one another and be parallel to and extend each other, and wherein said storage tank is roughly fully positioned at the inner side of described housing.
4. according to claim 2 or energy disperser according to claim 3, it is characterized in that, described displacement component is bar or cylindrical piston, a part for described bar or piston is accommodated in the inner side of described storage tank slidably, be communicated with fluidly to shift with the inwall of storage tank, described displacement component impelled towards the movement of the described second place and just shifts described fluid via described one or more other aperture.
5. energy disperser according to claim 4, is characterized in that, described piston comprises the one or more piston rings inside described storage tank, and described piston ring and the described inwall of described storage tank become fluid slidably to shift to contact.
6. energy disperser according to claim 5, is characterized in that, described stabiliser comprises the circumferential collar around described bar or described piston, and the diameter of the described collar is variable; And described bar or described piston comprise one or more first actuating surface be connected thereto, when described bar or described piston move towards the described second place, described first actuating surface can with described cover engagement of loops to actuate described cover ring extension, this type of expansion is resisted, to stop the non-longitudinal of described piston to move by one or more surfaces in addition of the outside being positioned at the described collar.
7. energy disperser according to claim 6, is characterized in that, described circumferential collar is formed by two or more ring-type sections, and described ring-type sections is expanded away from each other when being engaged by described one or more first actuating surface.
8. energy disperser according to claim 6, is characterized in that, described first actuating surface or each the first actuating surface are one or more inclined-plane or comprise one or more inclined-plane.
9. energy disperser according to claim 6, is characterized in that, the described collar comprises one or more storage surface, and described storage surface comprises the inclined-plane that can be engaged by described actuating surface.
10. energy disperser according to claim 6, is characterized in that, overcomes to vertically move to limit the described collar by one or more shoulders relative with the power being applied to the described collar by described first actuating surface or each the first actuating surface.
11. energy dispersers according to claim 6, it is characterized in that, the described collar comprises one or more reaction surface, described reaction surface can be engaged by one or more other actuating surface, the place engaged between described one or more reaction surface with described other actuating surface impels the described collar to expand at the three unities place, and the place end wise that described place engages along described piston with by described first actuating surface or each actuating surface is spaced apart.
12. energy dispersers according to claim 11, it is characterized in that, described first actuating surface or each the first actuating surface and/or described other actuating surface or each other actuating surface are formed as the actuating surface circle around described bar or described piston.
13. energy dispersers according to claim 12, is characterized in that, described at least one, the diameter of actuating surface circle is variable.
14. energy dispersers according to claim 13, is characterized in that, comprise one or more discontinuities allowing the described actuating surface circle of its diameter change.
15. energy dispersers according to claim 1, is characterized in that, described other aperture limits the spiral pattern in the described other aperture of the periphery be arranged to around described storage tank.
16. energy dispersers according to claim 1, is characterized in that, described other aperture and the length variations of spacing each other along described storage tank.
17. energy dispersers according to claim 1, is characterized in that, described multiple other aperture vertically extends in the use of described energy disperser between the other aperture of bottom and the other aperture of at least one the top; And wherein when described displacement component occupies its first extended position, described container holds hydraulic fluid to the level higher than the other aperture of described the top or the other aperture of each the top.
18. energy dispersers according to claim 17, is characterized in that, the other aperture of the described the top in described aperture in groups or the other aperture of each the top are greater than remaining aperture described.
19. energy dispersers according to claim 4, is characterized in that, described storage tank and described housing are at least one end place and adjacent to each other, and described piston directly extend out to the outside of described housing via described first aperture from described storage tank thus.
20. energy dispersers according to claim 1, it is characterized in that, described free end comprises the flange be fixed thereon, and wherein said action of the spring are between described flange and described housing.
21. energy dispersers according to claim 20, it is characterized in that, described flange is included in the skirt section of first end place around described spring, and described housing comprises the part that diameter reduces, the part that second end ring of the described spring relative with described first end reduces around described diameter, makes keep-spring relative to described energy disperser fixing.
22. according to stating energy disperser according to claim 1, it is characterized in that, described energy disperser comprises fixing switch on the housing and the switch actuator be fixed on described displacement component, make when described displacement component moves from described primary importance towards the described second place, described switch actuator operates described switch.
23. energy dispersers according to claim 22, it is characterized in that, described switch actuator is elongate bars or comprises elongate bars, described elongate bars extends from described displacement component towards described switch, to engage described switch in the mode impelling it to operate when described displacement component moves towards the described second place.
CN201180020253.XA 2010-04-22 2011-04-20 Energy disperser CN102985349B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104803253B (en) * 2015-04-27 2017-03-22 杜志刚 Elevator buffer brake device
CN106395549A (en) * 2016-10-28 2017-02-15 成都聚智工业设计有限公司 Elevator buffer
CN110446677B (en) * 2017-03-30 2020-12-01 三菱电机株式会社 Hydraulic buffer for elevator
CN107686034B (en) * 2017-08-25 2019-04-02 辽宁工程技术大学 A kind of elevator hydraulic damping device
CN109368439B (en) * 2018-08-29 2020-10-23 安徽迅立达电梯有限公司 Novel hydraulic elevator
CN110877847A (en) * 2019-10-31 2020-03-13 孙阎强 Intelligent manufacturing elevator is with buffering foundation ditch

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1870827A (en) * 1930-07-30 1932-08-09 Westinghouse Electric & Mfg Co Buffer
US3731770A (en) * 1971-05-19 1973-05-08 Ace Controls Adjustable shock absorber
US4015835A (en) * 1974-08-21 1977-04-05 R. Stahl Aufzuege Gmbh Shock absorbers for elevators
US4174098A (en) * 1978-07-03 1979-11-13 Ace Controls, Inc. Shock absorber and mounting means therefor
GB2143613A (en) * 1983-07-11 1985-02-13 Otis Elevator Co Hydraulic buffer for elevators with air flow to remove contaminants
US5050712A (en) * 1989-04-25 1991-09-24 Enertrols, Inc. Shock absorber
WO2001089974A1 (en) * 2000-05-25 2001-11-29 Henning Gmbh Hydraulic lift buffer
JP2008297113A (en) * 2007-06-04 2008-12-11 Mitsubishi Electric Corp Oil-filled shock absorbing device of elevator
CN201217591Y (en) * 2008-05-08 2009-04-08 河北东方富达机械有限公司 Oil hydraulic buffer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1870827A (en) * 1930-07-30 1932-08-09 Westinghouse Electric & Mfg Co Buffer
US3731770A (en) * 1971-05-19 1973-05-08 Ace Controls Adjustable shock absorber
US4015835A (en) * 1974-08-21 1977-04-05 R. Stahl Aufzuege Gmbh Shock absorbers for elevators
US4174098A (en) * 1978-07-03 1979-11-13 Ace Controls, Inc. Shock absorber and mounting means therefor
GB2143613A (en) * 1983-07-11 1985-02-13 Otis Elevator Co Hydraulic buffer for elevators with air flow to remove contaminants
US5050712A (en) * 1989-04-25 1991-09-24 Enertrols, Inc. Shock absorber
WO2001089974A1 (en) * 2000-05-25 2001-11-29 Henning Gmbh Hydraulic lift buffer
JP2008297113A (en) * 2007-06-04 2008-12-11 Mitsubishi Electric Corp Oil-filled shock absorbing device of elevator
CN201217591Y (en) * 2008-05-08 2009-04-08 河北东方富达机械有限公司 Oil hydraulic buffer

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GB2491793B (en) 2015-02-25
WO2011131986A2 (en) 2011-10-27
GB201006713D0 (en) 2010-06-09
GB2491793A (en) 2012-12-12
GB201218609D0 (en) 2012-11-28
CN102985349A (en) 2013-03-20
WO2011131986A3 (en) 2012-03-29

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