The present invention relates generally to an arrangement that enables a plurality of closely related and adjacent oriented sleepers to be moved from a sleeper assembly in the form of a stock or a stack and distributed to and along a railroad bed or a prepared track containing embankment.
The arrangement includes a chosen number of coordinated units, each of which comprises a beam construction or beams having end-related gripping means, hereinafter referred to as gripping claws, wherein pairs of gripping claws are adapted to grip or to grip and hold a sleeper in a first position, and to release the thus held sleeper in a second position.
The invention finds particularly suitable application with regard to moving a plurality of mutually parallel loosely positioned and closely adjacent sleepers from a sleeper stock or stack, by gripping and positioning a chosen number of said sleepers simultaneously with the aid of a corresponding number of arrangement-associated units, where said sleepers are lifted from the sleeper stock, wherein said units are moved away from one another, with the gripped sleepers depending therefrom, to a predetermined position in which the sleepers are lowered onto the railroad bed or containment embankment and loosened so as to rest on said bed.
The arrangement includes to this end a unit-related means, which is adapted to enable the relative distance between said units to be either increased or decreased.
Beam-end-related pairs of gripping claws function to enable a sleeper to be held firmly by means of an end-orientated clamping effect.
More particularly, said means and said chosen number of units are coordinated in a frame structure, wherein, when in a mutually combined first position, said units and their pairs of gripping claws and associated beams are able, to grip and to hold simultaneously a number of closely adjacent sleepers corresponding to the number of units and extending in the same plane, and to lift said sleepers from a sleeper stock or stack located on one side of the railroad bed and lift and move said sleepers towards and over said bed.
During this suspended movement of the thus held sleepers, the aforesaid means is activated so as to allow the units to move away from each other and into a second position in which the units and the sleepers are mutually spaced apart along the railroad bed.
The arrangement also includes means for distributing adjacent units and adjacent sleepers equidistantly.
Equipment utilising a plurality of such arrangements also lies within the scope of the present invention.
Several different methods and arrangements of the aforesaid kind are known to the art.
For instance, an appropriate example of the background of the technology relevant at present and the technical field to which the invention relates are found in the contents of the International Patent Application No. PCT/SE98/01992, with the International Publication No. WO-A1-99124668.
This prior patent application illustrates and describes an arrangement that includes a number of units, each comprising beam-carrying, end-related gripping claws by means of which a number of sleepers chosen for an arrangement along a railroad track can be gripped and released simultaneously.
For a closer understanding of the basic conditions that shall be applied in respect of an arrangement, according to the present invention, the reader is referred primarily to the contents of said patent publication and secondarily to the following overview description given below, with reference to
When taking into consideration the technical deliberations that a person skilled in this particular art must make in order to provide a solution to one or more technical problems that he/she encounters, it will be seen that on the one hand it is necessary initially to realise the measures and/or the sequence of measures that must be undertaken to this end, and on the other hand to realise which means is/are required in solving one or more of said problems. On this basis, it will be evident that the technical problems listed below are highly relevant to the development of the present invention.
When considering the present standpoint of techniques, as described above, it will be seen that a technical problem resides in the ability to realise the significance of and the advantages afforded by creating an arrangement of the aforesaid kind which can be made lighter than the earlier known equipment described in the aforesaid International Patent Publication while including the same number of units.
A technical problem also resides in the ability to realise the significance of and the advantages afforded by creating with the aid of simple means conditions that will enable a chosen number of sleepers to be placed along a railroad bed with the aid of a much simpler manually applied force than that required in the case of the known technology, such that adjacent sleepers will be spaced equidistantly and capable of being adjusted in dependence of the support that a rail requires with regard to relevant railroad sections.
Another technical problem resides in the ability to realise the significance of and the advantages afforded by providing means which enable the horizontal distance between mutually adjacent units to be increased or reduced with the aid of a beam and associated pairs of gripping claws, and by providing sleepers held by said gripping claws with frame-associated centrally pivotal arms, among other things.
It will also be seen that a technical problem resides in the ability to realise the significance of and the advantages afforded by, inter alia, allowing outer parts of the pivotal arms to co-act pivotally with one end of a respective brace or link, whose other ends are each pivotally fastened to a respective outer-orientated unit.
Another technical problem resides in the ability to realise the significance of and the advantages afforded by pivotally fastening one end of each brace or link to the centre regions of respective pivotal arms, and by pivotally fastening respective other ends of said braces or links to a respective intermediate unit.
It will also be seen that a technical problem resides in the ability to realise the significance of and the advantages afforded by providing the centrally pivotal arms with a common vertical pivot shaft related to the central region of the arms and also to the central region of a frame part.
Another technical problem resides in the ability to realise the significance of and the advantages afforded by including two such arms in the arrangement with the two outer parts of one arm being adapted for pivotal co-action with one end of a respective brace or link and to pivotally fasten the other ends thereof to a respective outer unit.
A technical problem also resides in the ability to realise the significance of and the advantages afforded by enabling the two outer parts of the other arm to co-act pivotally with one end of a respective other brace or link and to pivotally fasten the other ends to a respective outer unit at a chosen distance from the other ends of the braces or links related to said one arm.
Still another technical problem resides in the ability to realise the significance of and the advantages afforded by enabling two central regions of said one arm, on each respective side of the arm pivot axis, to co-act pivotally with one end of a respective brace or link whose other ends are fastened pivotally to a respective one of two intermediate units.
Another technical problem resides in the ability to realise the significance of and the advantages afforded by enabling the two central regions of said other arm, on each respective side of the arm pivot axis, to co-act pivotally with one end of a respective brace or link whose other ends are fastened pivotally to a respective one of said two intermediate units at a distance from the other ends of the braces or links related to said one arm.
Another technical problem resides in the ability to realise the significance of and the advantages afforded by arranging said two arms with their associated eight braces or links equidistantly between chosen pivot points, wherewith two outer units and two intermediate units can be displaced in parallel with one another.
In this regard, it will be seen that a technical problem resides in allowing said two arms and associated braces or links to differ slightly in distance between chosen pivot points, wherewith the two outer units and/or the two intermediate units may be displaceable in a slightly convergent path.
It will also be seen that a technical problem resides in the ability to realise the significance of and the advantages afforded by allowing the braces or links to be rotated to a unit transverse position in a fully combined or closely adjacent position of said units, and to be angled slightly from a perpendicular orientation with said units, and to allow given braces or links to mutually intersect.
It will also be seen that a technical problem resides in the ability to realise the significance of and the advantages afforded by using a hydraulic or a pneumatic piston-cylinder device that is capable of acting between a frame structure and one of said outer units.
It will also be seen that a technical problem resides in the ability to realise the significance of and the advantages that are afforded by enabling displacement of an outer unit relative to the frame structure to be achieved through the agency of movement limiting means that may consist of a rod of adjustable length disposed between stop means related to said rod.
A further technical problem resides in the ability to provide a coordinated array of at least two inventive arrangements that can be positioned side-by-side so as to increase the sleeper laying capacity at least twofold and enable the coordinated arrangements to be actuated synchronously in a coordinated fashion, and to realise the significance of and the advantages afforded by enabling an outer unit of a first arrangement to be placed adjacent an outer unit of a second arrangement, and to position said two units close to one another and to enable said units to mutually co-act through the movement of two mutually pivotal arms and braces or links pivotally fastened thereto.
In the case an array of two identical arrangements, it will be seen that a technical problem resides in realising the significance of and the advantages afforded by choosing said two pivotal arms and the lengths of the braces or links and their pivotal attachments so that the distance between adjacent outer units of a respective arrangement will correspond to the distance between an outer unit and an adjacent intermediate unit with respect to one and/or the other arrangement.
The present invention takes as its starting point the aforedescribed known technology wherewith an arrangement enables a co-ordinated plurality of sleepers intended for a railroad section to be gripped and released with the aid of pairs of gripping claws which co-act with one of a number of units included in the arrangement and which are coordinated with said unit through the agency of a gripping-claw carrying beam.
The arrangement shall be movable and also active between a sleeper stock or stack comprised of a plurality of mutually parallel, loosely stacked and closely adjacent sleepers that can be gripped by gripping claws allocated to the unit or units of said arrangement.
The arrangement includes a means with which the distance between mutually adjacent units and mutually adjacent sleepers can be changed, such as increased, wherewith pairs of gripping claws on one unit are adapted to grip a respective sleeper with an end-orientated or end-related clamping action to move the sleepers through a distance corresponding to a chosen sleeper distance appropriate for a chosen railroad bed, at which position the gripping claws in the units are opened above the railroad bed and therewith release said plurality of sleepers.
Said means are co-ordinated to form an arrangement frame structure.
With the intention of solving one or more of the aforesaid technical problems, it is particularly proposed in accordance with the present invention that the known technology shall be supplemented by giving said means the form of frame-associated and centrally pivotal arms, whose outer portions are capable of pivotally co-acting with one end of a respective brace or link whose other ends are pivotally fastened to a respective outer unit.
It is also proposed that one end of a respective brace or link is pivotally fastened to the midway regions of the arms on respective sides of a central pivot point, and that the other ends are pivotally fastened to a respective intermediate unit.
By way of proposed embodiments that lie within the scope of the basic concept of the present invention, it is proposed that the centrally pivotal arms are allocated a common, vertically orientated, pivot axis related to said frame part.
It is also proposed that the arms are two in number with both outer arm portions of one arm pivotally co-acting with one end of a respective brace or link whose other ends are pivotally fastened to a respective outer unit.
It is also proposed that both outer arm portions of the other arm pivotally co-act with the end of a respective other brace or link whose other ends are pivotally fastened to a respective outer unit at a distance from the other ends of the braces or links related to said one arm.
It is also proposed that the central regions of one arm on respective sides of the pivot axis are able to co-act pivotally with one end of a respective brace or link whose other ends are pivotally fastened to a respective intermediate unit.
It is also proposed that the central regions of the other arm on respective sides of the pivot axis are able to co-act pivotally with one end of a respective brace or link whose other ends are pivotally fastened to a respective intermediate beam at a distance from the other ends of the braces or links related to said one arm.
It is also proposed, in accordance with the invention, that said two arms, with associated braces or links, shall be capable of being given the same distance between chosen pivot points, and that two outer units and two intermediate units can be displaced in parallel.
It is also proposed that said two arms, with associated braces or links, shall be capable of being given a slightly deviating distance between chosen pivot points and that said two outer units and/or said two intermediate units can be displaced in a slightly convergent part relative to one another.
It is also proposed, in accordance with the invention, that the braces or links are rotatable to a transverse position of the units, also when the units are in a fully juxtaposed position, and therewith be angled slightly from a perpendicular orientation relative to said units and intersect one another.
Also proposed in accordance with the invention is the use of a hydraulic or a pneumatic piston-cylinder device which is able to act between the frame structure and one of said outer units.
In addition, there is proposed in accordance with the invention means functioning to limit displacement of an outer unit relative to said frame structure, wherein said means may consist of a rod whose length can be adjusted between rod-related stop means.
Also proposed in accordance with the invention is the possibility of constructing an array of two or more co-ordinated arrangements, said arrangements in said array being positionned side-by-side such as to obtain a greater sleeper-laying capacity.
It is proposed in this regard that an outer unit of a first arrangement can be placed adjacent to and parallel with an outer unit of a second arrangement and that these units are placed adjacent each other and able to co-act mutually through the agency of two mutually pivotal arms and also through the agency of braces or links related to said arms.
With regard to said array of arrangements, it is proposed in accordance with the invention that the lengths of the two pivotal arms and the lengths of the braces or links and the pivotal attachments are chosen so that the distance between adjacent outer units in respective arrangements will correspond to the distance between an outer unit and an adjacent intermediate unit in respect of one and/or the other arrangement.
Those advantages primarily afforded by the present invention and its particular significant characteristic features reside in the provision of conditions with which the weight of an arrangement of this kind can be reduced, and therewith facilitate manual manoeuvring of sleepers that are held firmly in said units and that shall be placed with precision over a prepared railroad bed, and wherewith the relative distance between adjacent sleepers can be readily adjusted in accordance with expected loading conditions acting on the railroad bed concerned.
Other advantages include simplifications whereby means adapted to enable the horizontal distance between adjacent units, comprising a beam and gripping claws coordinated therewith, and adjacent sleepers comprises two frame-associated centrally pivotal arms whose outer parts are able to co-act pivotally with one end of a respective brace or link whose other ends are pivotally fastened to a respective outer unit.
One end of a respective brace or link is also pivotally fastened to the midway regions of said two arms on a respective side of a central pivot axis and the other ends of said respective braces or links are pivotally fastened to a respective intermediate unit.
Arrangements of this kind are well suited for inclusion as units in said array.
The primary characteristic features of the present invention are set forth in the characterising clause of the accompanying claim 1, whereas the features set forth in the characterising clause of the accompanying claim 15 can be considered to characterise an array of said arrangements.
Earlier known equipment for moving sleepers from a sleeper stock to a railroad bed and an exemplifying embodiment of an arrangement at present preferred and having characteristic features significant of the present invention will now be described in more detail with reference to the accompanying drawings, in which;
PCT/SE98/01992;
Shown in
In this case, the arrangement “B” is carried by a working machine “C” and the arrangement includes means “D” capable of increasing the distance between mutually adjacent sleepers “E1; E2; E3 . . . ”.
The arrangement also includes pairs of gripping claws that are adapted to firmly hold respective sleepers with an end-related clamping action.
The distance “a” between adjacent sleepers can be adjusted to a sleeper spacing appropriate with regard to a railroad bed “F” and the gripping claws are opened to release the coordinated sleepers in this position.
More particularly,
When the spacing between the sleepers has been increased, the sleepers are placed to rest on the railroad bed and released.
It is pointed out initially that we have chosen to use in the following description of embodiments at present preferred and including significant characteristic features of the invention illustrated in the figures of the accompanying drawings special terms and terminology with the primary intention of illustrating the inventive concept more clearly.
However, it will be noted that the expressions and terms used shall not be seen as being limited solely to these expressions and terms and that each chosen expression and term shall be interpreted as also including all technical equivalents that function in at least essentially the same way so as to achieve the same or essentially the same intention and/or technical effect.
As will be seen in
The arrangement 3 is shown here in a first side view and is constructed to enable four sleepers to be securely held simultaneously with the aid of four units in an adapted co-ordinated or increased distance therebetween.
In the case of the
A person “P” stands on the railroad bed “F” and the positions of respective sleepers S1, S2, S3 and S4 along the railroad bed is controlled by a crane driver, wherewith the distance of the sleeper S4 from an already positioned sleeper S5 can be caused to correspond to a chosen distance “b3” between sleeper S3 and the sleeper S4 with the aid of a distance measuring unit 4.
The invention is based on the concept of causing each distance “b” chosen between the sleepers S3 and S4 to be the same as the distance between remaining sleepers S1 and S2, S2 and S3.
The construction of the arrangement 3 will be described below in more detail.
Thus,
As shown in
Referring to
In conjunction with moving coordinated and gripped sleepers “A1” belonging to the sleeper stock or stack, the means 10 is activated to increase the distance between adjacent units B1, B2, B3 and B4 and adjacent sleepers, wherewith unit-associated pairs of gripping claws G1, G1′ are adapted to secure a respective sleeper through the medium of an end-related clamping action until a distance corresponding to a sleeper spacing “b3” according to
The sleepers have been omitted in FIGS. 3 to 12, for the sake of clarity.
The means 10 is comprised of a frame structure 11 (not described in detail) and centrally pivotal arms 40, 41 whose respective outer arm portions 40a, 40b and 41a, 41b respectively co-act pivotally with one end of a respective brace or link.
Thus, one end 40a of the arm 40 co-acts with a brace or a link 51, while the other end 40b of said arm co-acts with a brace or a link 52.
Referring to
Similarly, the other end 40b of the arm 40 is connected pivotally to one end 52a of the brace or the link 52, whereas the other end 52b of the link 52 is fastened pivotally to an outermost unit B4.
One end 41a of the arm 41 co-acts pivotally with one end 61a of the link 61, whereas the other end 61b of said link 61 is fastened pivotally to the unit B1.
The other end 41b of the arm 41 is fastened pivotally to one end 62a of the link 62, whereas the other end 62b of said link 61 is fastened pivotally to the unit 64.
As will be seen, the arms 40, 41 are pivotally mounted about a common pivot axis 12 disposed in the midway regions of respective arms.
With reference to
This is shown more clearly in
Thus, one end 71a of a link 71 is pivotally fastened to one central region 40′ of the arm 40, and the other end 71b of said link is pivotally fastened to the unit B2.
As will be seen, one end 72a of a link 72 is pivotally fastened to the other central region (40′) of the arm 40, and the other end 72b of said link is pivotally fastened to the unit B3.
It will also be seen that one end 81a of a link 81 is pivotally fastened to one central region 41′ of the arm 41, and that the other end 81b of said link is pivotally fastened to the unit B2.
It will also be seen that one end 82a of a link 82 is pivotally fastened to another central region 41′ of the arm 41, and that the other end 82b of said link is pivotally fastened to the unit B3.
In the illustrated embodiment, the pivotal arms 40, 41 are two in number with the outer arm portions 40a, 40b of one arm 40 co-acting pivotally with one end 51a, 52a of a respective brace of link 51, 52, wherewith the other ends 51b and 52b of said brace or link are pivotally fastened to a respective outer unit B1 and B4.
The outer arm portions 41a, 41b of the other arm 41 co-act pivotally with one end 61a, 62a of a respective other brace or link 61, 62, wherein the other ends 61b, 62b of said brace or link 61, 62 are fastened to a respective outer unit B1 and B4 at a distance “c” from said other ends 51b and 52b of the braces or links 51 and 52 related to said one arm 40.
The two central regions 40′, (40′) of said one arm 40 co-act pivotally with one end of a respective brace or link 71, 72, wherewith other ends are pivotally fastened to a respective intermediate unit.
Two central regions 41′, (41′) of said other arm (41) co-act pivotally with one end of a respective brace or link (81, 82), the other ends of which are fastened pivotally to a respective intermediate unit B2 and B3 at a distance from said other end of the braces or links related to said one arm 40.
The two arms 40, 41, with associated braces or links, are spaced at the same distance apart between chosen link pivot points, therewith enabling two outer units and two intermediate units to be moved towards and away from each other in a parallel path.
It also lies within the scope of the invention to use two arms 4041, with associated braces or links, that are disposed at a slightly deviating distance between selected pivot points, therewith enabling said two outer units and/or said two intermediate units to be moved in a slightly converging path.
As will be seen from
It will be seen from these figures, and then particularly from
The orientation of these braces and links is shown more clearly in the enlarged view of
The arrangement also includes means 50a for restricting displacement of an outer unit B1 relative to the frame structure 11, said means 50a having the form of a rod whose length can be adjusted between associated stop elements so as to enable the units to be spaced equidistantly by a chosen distance “b2”.
It will be noted that displacement of the units B1 to B4 inclusive while retaining one and the same increasing or decreasing distance “b” between said units requires corresponding dimensioning of the means 10.
For example, with reference to
A second distance between the common pivot point 12 of the arms 40 and 41 and respective pivotal fastening 51a, 52a and 61a and 62a in respect of second braces or links shall also have the same value.
In respect of parallel displacement, the ratio of the first distance to the second distance shall be 1:3.
In this regard, it is particularly proposed that an outer unit B4 in a first arrangement 3A can be placed adjacent an outer unit B5 of a second arrangement 3B and that these units lie close together and co-act with each other through the agency of an intermediate coupling means 13 that includes arms 400 and 410 that are pivotal relative to each other via four braces or links referenced 510, 520; 610, 620.
As shown more specifically in
It will be understood that the invention is not restricted to the aforedescribed and illustrated exemplifying embodiment thereof and that modifications can be made within the scope of the inventive concept and illustrated in the accompanying Claims.
It will also be understood in particular that each illustrated unit can be combined with each other illustrated unit within the concept of the invention in order to achieve a desired technical function.
Number | Date | Country | Kind |
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0301367-9 | May 2003 | SE | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/SE04/00708 | 5/10/2004 | WO | 11/9/2005 |