WO2010070741A1 - Chaîne sans fin et dispositif de retrait de ballast la comportant - Google Patents

Chaîne sans fin et dispositif de retrait de ballast la comportant Download PDF

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Publication number
WO2010070741A1
WO2010070741A1 PCT/JP2008/072923 JP2008072923W WO2010070741A1 WO 2010070741 A1 WO2010070741 A1 WO 2010070741A1 JP 2008072923 W JP2008072923 W JP 2008072923W WO 2010070741 A1 WO2010070741 A1 WO 2010070741A1
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WO
WIPO (PCT)
Prior art keywords
ballast
endless chain
support member
link
portions
Prior art date
Application number
PCT/JP2008/072923
Other languages
English (en)
Japanese (ja)
Inventor
智行 尾島
Original Assignee
株式会社水谷組
マルマテクニカ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社水谷組, マルマテクニカ株式会社 filed Critical 株式会社水谷組
Priority to ATA9474/2008A priority Critical patent/AT512242B1/de
Priority to JP2010542777A priority patent/JP5238040B2/ja
Priority to PCT/JP2008/072923 priority patent/WO2010070741A1/fr
Publication of WO2010070741A1 publication Critical patent/WO2010070741A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/04—Removing the ballast; Machines therefor, whether or not additionally adapted for taking-up ballast
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
    • E01B27/10—Renewing or cleaning the ballast in situ, with or without concurrent work on the track without taking-up track
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/18—Chains having special overall characteristics

Definitions

  • the present invention relates to an endless chain used for removing a ballast, which is a roadbed made of a large number of gravel and crushed stone, which is laid on a roadbed under a sleeper that supports rails of a railroad track, and a ballast removal provided with the endless chain Relates to the device.
  • an apparatus described in Patent Document 1 is known as an apparatus for removing a ballast scheduled to be replaced on a railway track.
  • This conventional apparatus includes a pair of linear portions and a supporting member having a curved portion between the linear portions, a pair of sprockets rotatably supported by the linear portions of the supporting member, and both sprockets. And an endless chain that is supported by the support member and extends along both straight and curved portions of the support member.
  • the endless chain is pivotably connected to each other around a swing axis and is extended around another swing axis perpendicular to the swing axis so that the endless chain can extend along the curved portion of the support member.
  • a plurality of link bases that are swingably connected to each other, and scraping off the bit and the ballast that has been broken, which are supported by each link base and project around the endless chain, And a scraping plate.
  • the conventional apparatus further includes a hood that is supported by the support member and surrounds a part of the endless chain that extends along one of the straight portions and the curved portion of the support member.
  • the endless chain rotates around both sprockets by driving one of the two sprockets, and the bit and scraper supported by each link base of the endless chain are connected to each sprocket. It travels in the rotation direction of the endless chain along the circumferential surface and each straight line portion and curved portion of the support member.
  • the broken ballast that is, individual gravel or crushed stone, is scraped by the scraping plate and is taken in the rotational direction of the endless chain.
  • These ballasts are further fed into the hood by the scraping plate, transferred to the one sprocket through the hood, and then discharged from the hood to the outside. Thereby, the removal of the ballast from the railway track is performed.
  • a gap is provided between the link bases so that the two link bases adjacent to each other can swing around the other swing axis.
  • This gap allows the ballast to fit between the link bases during the ballast removal operation.
  • the ballast fitted in the gap causes the link bases to swing around the other swing axis for traveling along the curved portion of the support member, and the gap between the link bases gradually narrows. When it is pressed by both link bases, it is crushed and destroyed. However, this causes wear or damage to both link bases. This also causes the endless chain to vibrate, which is a cause of poor ballast conveyance in the hood.
  • An object of the present invention is to provide an endless chain capable of preventing ballast from entering between adjacent link bases and a ballast removing apparatus including the endless chain.
  • the invention according to claim 1 relates to an endless chain used for removing ballast on a railway track, and the endless chain is connected in series between a pair of linear portions and both linear portions when used. It is supported by a support member having a curved portion so as to extend along both the straight portions and the curved portion, and is wound around a pair of sprockets rotatably supported on both straight portions of the support member.
  • the endless chain is pivotably connected to each other around a swing axis and is extended around another swing axis perpendicular to the swing axis so that the endless chain can extend along the curved portion of the support member.
  • a plurality of link bases that are swingably connected to each other, a bit that is supported by each link base and protrudes around the endless chain, and a scrap for scraping off the ballast. And a catch plate.
  • a pair of adjacent link bases are provided with a set of overlapping portions facing the periphery of the endless chain that can overlap each other when the link bases are located at positions other than the periphery of each sprocket. It is characterized by.
  • the endless chain in use, is supported by the support member and wound around both sprockets, and is rotationally driven by receiving rotational power applied to one of the two sprockets.
  • the endless chain performs rotational movement along the peripheral surfaces of both sprockets and the linear portions and the curved portion of the support member, and the bit supported on each link base constituting the endless chain and
  • the scraping plate travels with each link base in the rotation direction of the endless chain.
  • the operation of removing the ballast from the railway track by using the endless chain is performed by pressing a bit protruding around the endless chain against the ballast of the railroad track that runs along one straight portion of the support member.
  • the scraping plate that travels along the one straight portion together with the bit scrapes off the individual gravel or crushed stone that is the collapsed ballast on other ballasts or roadbeds below these, and the support It is performed by conveying toward the curved portion of the member.
  • a pair of overlapping portions is provided on a pair of adjacent link bases constituting the endless chain.
  • the overlapping portions are arranged facing the periphery of the endless chain, and can overlap each other when both adjacent link bases are located at positions other than the periphery of each sprocket. Therefore, the gap between the adjacent link bases traveling on the one straight portion is closed by the overlapping portion, and the ball base is fitted into the gap and the link base is worn or damaged due to this. In addition, it is possible to avoid a ballast conveyance failure caused by the vibration of the endless chain.
  • both adjacent link bases swing around the swing axis when they move around each sprocket, and as a result, the overlapping area, which is the area of the overlapping portions of both overlapping portions, gradually decreases. Finally, a gap is formed between the two overlapping portions.
  • this gap serves as a ballast discharge space as follows. That is, the ballast having a relatively small particle diameter that may enter between the two overlapping portions or between the two link bases through the other portions during traveling in one linear portion of the support member, It can discharge
  • the invention described in claim 2 is characterized in that the bit is removably attached to the link base after the components of the invention described in claim 1 are provided.
  • the second aspect of the present invention it is possible to easily and quickly remove a bit and attach a new bit that may be worn or damaged by a collision with a ballast. Further, it is possible to easily load and replace a bit having sufficient strength or hardness to exert a breaking action on the ballast according to the hardness of the ballast.
  • the invention described in claim 3 relates to a ballast removing device for removing ballast on a railway track, and basically includes the endless chain described in claim 1.
  • the ballast removing device includes a support member having a pair of straight portions and a curved portion between both straight portions, and a pair of sprockets rotatably supported on both straight portions of the support member, and the endless chain is It is supported by the support member so as to be wound around both sprockets and to extend along both straight and curved portions of the support member.
  • the endless chain is slidably connected to each other around the swing axis, and can be extended along the curved portion of the support member.
  • a plurality of link bases that are swingably connected to each other around another swing axis that is orthogonal to each other, and a ballast of the railroad track that is supported by each link base and protrudes around the endless chain.
  • the periphery of the endless chain provided on a scraping plate for scraping off the bit and the ballast and a pair of link bases adjacent to each other and capable of overlapping each other when both link bases are located outside the periphery of each sprocket And a pair of overlapping portions facing each other.
  • the ballast removing device further includes a hood that is supported by the support member and surrounds a part of the endless chain that extends along one of the linear portions of the support member and the curved portion thereof.
  • a rotational motion around the two sprockets is generated in the endless chain.
  • a bit projecting around the endless chain that travels along the other straight portion (the straight portion not accommodated in the hood) of the support member in accordance with the rotational movement of the endless chain is used as a ballast for the railway track.
  • the ballast conveyed to the curved portion is propelled toward one of the brackets by the scraping plate in the hood that houses the curved portion and the one linear portion connected to the curved portion. Thereafter, the ballast from the track can be removed by discharging these ballasts from the open end provided in the hood to the outside and further conveying them with a belt conveyor as necessary.
  • the pair of adjacent link bases constituting the endless chain is provided with a set of overlapping portions that can be overlapped with each other when they are at positions other than the periphery of each sprocket. Therefore, it is avoided that the ballast is fitted between the adjacent link bases during the operation of removing the ballast, and that the link base is worn or damaged, and the ballast is not properly conveyed due to the vibration of the endless chain. can do.
  • Both adjacent link bases swing around the swing axis when they move around each sprocket, and as a result, the overlapping area, which is the area of the overlapping portions of both overlapping portions, gradually decreases.
  • a gap is formed between the two overlapping portions. However, this gap serves as a ballast discharge space as follows. That is, the ballast having a relatively small particle size that may enter between the two overlapping bases or between the two link bases during traveling in the linear portion of the support member is caused to pass through the gap by centrifugal force. It can be released from between both link bases.
  • the invention described in claim 4 comprises the component of the invention described in claim 3, and further includes a shaft rotatably supported by a curved portion of the support member via a bearing, and the shaft. And a plurality of guide members each having a roller that is fixed and is in contact with the link base at the curved portion of the support member and is capable of rolling.
  • the link base of the endless chain follows the curved portion of the support member via the roller of the guide member that rolls in contact with the curved portion of the support member. All the more accurate driving is guaranteed.
  • a roller that rolls in contact with the link base is rotatably supported on a shaft through a bearing fitted in a central hole provided in the roller, and the shaft is supported by the support member. It was fixed to the curved part.
  • the bearing since the bearing faces the specified space of the hood, the ballast pieces and powder conveyed in the specified space of the hood enter the inside of the bearing, and the bearing And the resulting rotation failure of the roller.
  • the roller of the guide member is fixed to the shaft, and the shaft is rotatably supported by the curved portion of the support member via the bearing. It is possible to dispose the roller behind the roller that does not face the specified space, thereby preventing a failure of the bearing due to the intrusion of ballast pieces and powder and a decrease in the guiding ability of the endless chain due to this. it can.
  • ballast removal apparatus of the state supported by the vehicle. It is a side view of the ballast removal apparatus of the state supported by the vehicle. It is a top view which fractures
  • FIGS. 1 and 2 there is shown a ballast removing device 1 according to the present invention disposed on a railroad track, and a vehicle 3 having a function for moving and operating the ballast removing device. .
  • the ballast removing device 1 is composed of a large number of gravel and crushed stones laid on a roadbed in order to disperse a load applied to a pair of rails 5 on a railroad track and a plurality of sleepers 7 that support the rails, reduce noise generation, and the like. Operated to remove ballast (not shown) for the purpose of replacement.
  • the vehicle 3 enables traveling on the rail 5 and a pair of crawlers 9 that enable entry into the railroad track, travel on the side of the track, and the like that are necessary for the operation of the ballast removing device 1.
  • a plurality of iron wheels 11 are provided.
  • the ballast removing device 1 is cantilevered on the vehicle 3 via a power mechanism 13 mounted on the vehicle 3. By operating the power mechanism 13, the ballast removing device 1 can be rotated or turned. By this rotation or turning operation, the ballast removing device 1 can be positioned at the work position (position shown in FIGS. 1 and 2), and can be retracted from the work position. As will be described later, the ballast removing apparatus 1 further has a function of conveying the ballast removed from the railroad track. On the other hand, the vehicle 3 receives a ballast from the ballast removing device 1, and is used to transfer the ballast to, for example, a waiting dump truck. And a sorting belt conveyor 17.
  • Reference numeral 19 denotes an operation room in which the driving device of the vehicle 3 and the operation device of the ballast removing device 1 are arranged.
  • the ballast removing apparatus 1 includes a support member 21, a pair of sprockets 23 rotatably supported on the support member, an endless chain 25 wound around both sprockets 23, A hood 27 (FIG. 4) is supported by the support member 21 and surrounds a part of the endless chain 25 extending along a part of the curved part 41 described later and the linear part 39 connected thereto.
  • the support member 21 is composed of an elongated frame 29 extending in a U-shape as a whole, one linear portion 37, a curved portion or curved portion 41, and another straight line connected in series with each other in the extending direction. Part 39. In contrast to the straight portions 37 and 39 extending straight, the curved portion 41 between the straight portions 37 and 39 extends to draw an arc.
  • the support member 21 that supports the endless chain 25, that is, the frame 29, is seen in FIG. 2 showing the state where the ballast removing device 1 is placed in the operating position, and one straight portion 37 is located above the roadbed of the railroad track. Thus, it extends horizontally so as to cross both rails 5 at a position below the sleepers 7.
  • the curved portion 41 connected to the straight portion 37 extends upward in the lateral space of the sleepers 7 and both rails 5. Further, the other one linear portion 39 connected to the curved portion 41 extends obliquely upward in the upper space of both rails 5 relative to the one linear portion 37.
  • the frame 29 includes a pair of parallel side portions 31 that are spaced from each other with respect to the paper surface direction of FIG. 2, an upper portion 32 and a lower portion 33 that are respectively positioned above and below the side portions 31, One end 35.
  • the end portion 35 is located at the tip of one linear portion 37.
  • the end portion 35 is received so as to be movable in the longitudinal direction of the space in a space defined by the both side portions 31 and the upper and lower portions 32 and 33 and to be fixed to the both side portions 31 and the lower portion 33.
  • a base portion 35a, and a pair of plate-like bearing portions 35b that are connected to the base portion and project outside the space.
  • the upper portion 32 of the frame 29 and one bearing portion 35 b at the end portion 35 are removed.
  • One sprocket 23 is disposed between both bearing portions 35 b of the end portion 35 of the frame 29.
  • the sprocket 23 is supported by both bearing portions 35b so as to be rotatable around an axis perpendicular to them.
  • the other sprocket 23 is rotatably supported at the end of the other one linear portion 39, and the sprocket is connected to a drive source 43 such as a hydraulic motor for providing rotational power thereto. ing.
  • the drive source 43 is disposed on the hood 27 and supported by the hood 27.
  • the upper portion 32 of the frame 29 is composed of a plurality of plate bodies arranged side by side on both side portions 31 and fixed by, for example, a plurality of bolts (not shown). These plates are arranged over a part of the frame 29 not covered with the hood 27, that is, a range from one straight part 37 to a part of the curved part 41. Regarding the range from the remaining portion of the curved portion 41 to the other one straight portion 39, the inner wall surface of the hood 27 covering this range plays the role of the upper portion 32. Further, the lower portion 33 of the frame 29 is connected to both side portions 31 and is formed of a single plate that is integrated therewith. This plate extends over both the outside and the inside of the hood 27.
  • the upper and lower parts 32 and 33 respectively cover the side part 31 and the end part 35 at the upper side and the lower side thereof, and project to the sides.
  • the inner wall surfaces of the upper and lower parts 32 and 33 and the hood 27 receive the endless chain 25 between them, and serve to support the endless chain 25 around the both side parts 31, and also serve as travel guide means for the endless chain 25. Function.
  • the endless chain 25 includes a plurality of link bases 45 connected to each other so as to be able to swing around a swing axis and another swing axis perpendicular thereto, and a bit 47 supported on each link base 45 and A scraping plate 49.
  • each link base 45 has a cross-sectional shape that has a ⁇ -shape as a whole, a substrate portion 51 that has a rectangular shape as a whole, and a pair of plate-like plates that are orthogonal to the substrate portion and are parallel to each other. It consists of a flange portion 53.
  • the substrate portion 51 defines the outer surface of the endless chain 25, that is, the side surface facing the outer side O of the ring defined by the endless chain 25. Further, the free end surfaces of both flange portions 53 define the inner side surface of the endless chain 25, that is, the side surface facing the inner side I of the ring.
  • Each pair of link bases (adjacent link bases) 45 adjacent to each other includes a joint link 55 that is a connecting member, and the joint link and both adjacent link bases 45 so as to be swingable around the swing axis.
  • a joint link 55 that is a connecting member
  • the joint link and both adjacent link bases 45 so as to be swingable around the swing axis.
  • Each pin 57 defines the swing axis.
  • the joint link 55 is composed of a pair of comb-like block bodies 59 that mesh with each other so that both adjacent link bases 45 can swing around the other swing axis.
  • Both block bodies 59 are connected to each other by pins 61 that pass through these interdigitated comb-like portions.
  • the pin 61 defines the other swing axis.
  • the pin 61 of illustration has a head part and the axial part connected to this (not shown).
  • One of the block bodies 59 is provided with a hollow receiving portion 63 that allows only the shaft portion of the pin 61 to be inserted and can receive the head portion of the pin 61.
  • the head of the pin 61 is covered with a lid member 64 that is screwed into the receiving portion 63.
  • the two adjacent link bases 45 are arranged with a slight gap S described later between them.
  • the endless chain 25 wound around both the sprockets 23 is held between the upper and lower parts 32 and 33 of the frame 29 at both flange parts 53 of the link base 45. It is held between the inner wall surfaces and faces both side portions 31 of the frame 29 at the free ends of both flange portions 53 of the link base 45.
  • each side portion 31 of the frame 29 is used to reduce wear caused by contact between both flange portions 53 of the link base 45 in the endless chain 25 and each side portion 31 in the frame 29. It is covered with the wear plate 66 attached to.
  • the rotational power of the other sprocket 23 is such that the teeth of the sprocket bite into and engage with a pair of joint links 55 in each link base 45, via one of the joint links 55. Is transmitted to.
  • the endless chain 25 supported by the frame 29 that is the support member 21 extends along both the straight portions 37 and 39 of the frame 29 and the curved portion 41 (FIG. 2) connected to the straight portions 37 and 39. It is growing. Both adjacent link bases 45 in the endless chain 25 swing around a pin 57 that defines the swing axis when they travel around each sprocket 23. At this time, the flange portions 53 of both link bases 45 that are in a state of being opposed to each other with respect to the traveling direction of the endless chain 25 are changed to an angled state. Further, when both the link bases 45 travel along the curved portion 41 of the frame 29, the link bases 45 swing around the pin 61 that defines the other swing axis. At this time, the substrate portions 51 of both link bases 45 located on the same plane are changed into an angled state.
  • the bit 47 and the scraping plate 49 supported by each link base 45 extend vertically from the base plate portion 51 of each link base 45 toward the outer side O of the ring, and thereby, around the endless chain 25. It protrudes.
  • the bit 47 is fixed to the substrate portion 51 of the link base 45 by, for example, welding, or is inserted into a holder 65 that is fixed to the substrate portion 51 and can receive the bit 47 as shown in FIG. Fixed. According to the example shown in FIG. 4, when the bit 47 is worn, damaged, or the like, it is possible to replace only the bit 47 instead of replacing the entire link base 45. In addition, it is possible to easily load and replace a bit having a strength or hardness that can correspond to the hardness of the ballast to be broken.
  • the hood 27 has an inner wall surface and a link base 45 so that the ballast pushed into the hood 27 does not slide down in the hood 27 and can be entrained by the scraping plate 49 in the hood 27.
  • An interval between the scraping plate 49 is set.
  • the hood 27 has a flat rectangular cross-sectional shape as a whole, and a pair of opposing inner wall surfaces partially form an arc shape.
  • the ballast is conveyed toward the sprocket 23 at the upper position by a scraping plate 49 that travels in the hood 27.
  • a hopper 67 for discharging the ballast conveyed here to the outside lower side of the hood 27 is provided at the upper open end of the hood 27.
  • the ballast discharged from the hopper 67 is dropped onto the belt conveyor 15 which is moved and arranged below the hopper 67 and is transported to a predetermined place by the belt conveyor 15.
  • the two adjacent link bases 45 are connected to each other at an interval in order to ensure their swinging motion, and a gap S (FIGS. 4 and 6) exists between them.
  • the two adjacent link bases 45 face the periphery of the endless chain 25, that is, the outer side O of the ring.
  • a set of overlapping portions 69 and 71 is provided.
  • the two overlapping portions 69 and 71 can overlap each other when both adjacent link bases 45 are located outside the periphery of each sprocket 23, that is, at positions other than the respective end portions of the support member 21,
  • the gap S between the two adjacent link bases 45 is substantially closed so that the ballast does not enter into the gap S due to the overlapping of the 71.
  • the pair of overlapping portions 69 and 71 are provided at opposite end portions of the base plate portion 51 in both adjacent link bases 45, that is, both end portions in the traveling direction of the link base 45, and face the periphery of the endless chain 25.
  • one overlapping portion 69 has a bowl shape, and the tip portion extends beyond the gap S to a position that covers the other overlapping portion 71.
  • the other overlapping portion 71 has a flat surface and is covered with the tip portion of the bowl-shaped overlapping portion 69 with a space between the tip portion.
  • the mutual interval between the tip portion of the bowl-shaped overlapping portion 69 and the other overlapping portion 71 is determined by taking into consideration the size of gravel and crushed stone constituting the ballast to be removed.
  • Each of the overlapping portions 69 and 71 is provided with a semicircular cutout 75 that allows the head receiving portion 63 of the pin 61 that defines the other swing axis for both adjacent link bases 45 to pass through. ing.
  • the facing surfaces of the overlapping portion 69 and the overlapping portion 71 facing each other in the direction from the inner side I to the outer side O of the endless chain 25, that is, the transverse direction of the endless chain 25, are parallel to each other.
  • a pair of tapered surfaces is used.
  • a hole 73 is provided in the substrate portion 51 of each link base 45.
  • the hole 73 discharges the ballast that may enter between the overlapping portions 69 and 71 of both adjacent link bases 45 or between the flange portions 53 of the link base 45 from other locations using the centrifugal force. It functions as a discharge outlet.
  • both adjacent link bases 45 swing around the pin 61 when passing through the curved portion 41 of the support member 21. Accordingly, both overlapping portions 69 and 71 swing toward each other on the inner peripheral side of the bending portion 41 and away from each other on the outer peripheral side.
  • one overlapping portion 71 is positioned on the outer peripheral side of the bending portion 41 so that the overlapping portions of the overlapping portions 69 and 71 on the outer peripheral side of the bending portion 41 can be maintained.
  • the width dimension of the portion 71a to be performed (direction related to the traveling direction of the link base 45) is set to be wider than the width dimension of the portion 71b located on the inner peripheral side.
  • both edges 77 and 79 of the base plate portion 51 of each link base 45 facing each other with respect to the rotation axis direction (vertical direction in the drawing) of the sprocket 23 have the same curvature. It is formed to draw an arc.
  • Each of these arcs is set to form part of two larger arcs extending along the curved portion 41 of the support member 21. For this reason, when a plurality of continuous link bases 45 travel along the curved portion 41 of the support member 21, these link bases 45 under the guiding action of the support member 21 extend along the curved portion 41. It swings around the pin 61.
  • the edges 77 of the two link bases 45 adjacent to each other are positioned on one of the large arcs, and the edges 79 are positioned on the other large arc, whereby the links in the curved portion 41 are linked. Smooth running of the base 45 is ensured. Since one edge 79 of the arc-shaped substrate portion 51 has a smaller contact area with the ballast or the roadbed during the ballast removing operation than when the edge 79 extends linearly, the resistance against running of the endless chain 25 is reduced. And the wear of the link base 45 is small.
  • a plurality of guides are provided along one arc of the curved portion 41 in order to make the travel of the link base 45 along the curved portion 41 of the support member 21 even smoother.
  • a member 81 is disposed (see FIG. 2).
  • the guide member 81 includes a shaft 83 and a coaxial roller 85 fixed to the end of the shaft.
  • Each guide member 81 has a circumferential surface of the roller 85 on one of the flange portions 53 of the link base 45 (upward in FIGS. 5 and 6), more specifically, on a curved surface 86 formed on one flange portion 53. It arrange
  • the roller 85 in contact with the curved surface 86 of one flange portion 53 is rotated by a frictional force generated when the link base 45 moves, and the arc-shaped edge 77 of the link base 45 concentrically or coaxially with the curved surface 86.
  • the curved portion 41 is aligned on the one arc.
  • the bearing 87 that rotatably supports the shaft 83 is behind the roller 85 and does not directly face the ballast that is transported in the hood 27, so that it occurs with the transport of the ballast. It is possible to prevent the fine fragments and dust from entering the inside of the bearing 87, between the outer race 89 and the inner race 91 in the illustrated example, and causing the bearing 87 to malfunction. As a result, it is possible to prevent occurrence of vibration of the endless chain 25 that impairs the ballast conveying efficiency due to the poor rotation of the roller 85 and the insufficient guide action with respect to the link base 45 associated therewith.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

L'invention porte sur une chaîne sans fin (25) pour le retrait de ballast, laquelle chaîne comprend une pluralité de bases de maillons (45) qui sont reliés les uns aux autres de façon à être aptes à osciller autour d'axes d'oscillation (57), et qui sont également reliés les uns aux autres de façon à être aptes à osciller autour des autres axes d'oscillation (61), de telle sorte que les bases peuvent s'étendre le long des parties incurvées (41) d'éléments de support, de mèches (47) et de plaques de raclage de ballast (49) pour pousser et écraser les ballasts supportés sur chacune des bases de maillons. Un ensemble de parties chevauchées (69, 71) aptes à se chevaucher mutuellement pour fermer l'espace entre les bases de maillons adjacents sont disposées sur ces bases de maillons. Ces parties chevauchées peuvent empêcher le ballast d'entrer entre les deux bases de maillons.
PCT/JP2008/072923 2008-12-17 2008-12-17 Chaîne sans fin et dispositif de retrait de ballast la comportant WO2010070741A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ATA9474/2008A AT512242B1 (de) 2008-12-17 2008-12-17 Endloskette und mit dieser versehene ballasträumeinrichtung
JP2010542777A JP5238040B2 (ja) 2008-12-17 2008-12-17 無端チェーン及びこれを備えるバラスト除去装置
PCT/JP2008/072923 WO2010070741A1 (fr) 2008-12-17 2008-12-17 Chaîne sans fin et dispositif de retrait de ballast la comportant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2008/072923 WO2010070741A1 (fr) 2008-12-17 2008-12-17 Chaîne sans fin et dispositif de retrait de ballast la comportant

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WO2010070741A1 true WO2010070741A1 (fr) 2010-06-24

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PCT/JP2008/072923 WO2010070741A1 (fr) 2008-12-17 2008-12-17 Chaîne sans fin et dispositif de retrait de ballast la comportant

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AT (1) AT512242B1 (fr)
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WO2014019021A1 (fr) * 2012-07-31 2014-02-06 Lazidis Rail Products Pty Ltd Dégarnisseuse à ballast
EP2631361A3 (fr) * 2012-02-22 2014-11-26 K&K Maschinenentwicklungs GmbH & Co. KG Chaîne de terrassement destinée à démonter le matériau de ballast
CN106592348A (zh) * 2016-12-30 2017-04-26 常州市瑞泰工程机械有限公司 道砟清筛车用挖掘链
CN110725167A (zh) * 2019-11-19 2020-01-24 常州市瑞泰工程机械有限公司 挖掘链单元、挖掘链和边坡清筛车
FR3101891A1 (fr) * 2019-10-14 2021-04-16 Matisa Materiel Industriel maillon pour une chaîne d’excavation et chaine d’excavation associée
FR3101892A1 (fr) * 2019-10-14 2021-04-16 Matisa Materiel Industriel Assemblage articulé de deux maillons et chaîne d’excavation associée
CN112796180A (zh) * 2021-03-17 2021-05-14 温州市瑞基科技有限公司 一种扒渣链
WO2022257094A1 (fr) * 2021-06-11 2022-12-15 清展科技股份有限公司 Structure de cadre de guidage d'écran et dispositif d'écran la comprenant

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JPH0681302A (ja) * 1992-09-04 1994-03-22 Mitsubishi Heavy Ind Ltd 道床更換機
JP3696059B2 (ja) * 2000-07-18 2005-09-14 マルマテクニカ株式会社 道床バラスト掻出用チェーン及び掻出装置
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Publication number Priority date Publication date Assignee Title
EP2631361A3 (fr) * 2012-02-22 2014-11-26 K&K Maschinenentwicklungs GmbH & Co. KG Chaîne de terrassement destinée à démonter le matériau de ballast
WO2014019021A1 (fr) * 2012-07-31 2014-02-06 Lazidis Rail Products Pty Ltd Dégarnisseuse à ballast
CN106592348A (zh) * 2016-12-30 2017-04-26 常州市瑞泰工程机械有限公司 道砟清筛车用挖掘链
FR3101891A1 (fr) * 2019-10-14 2021-04-16 Matisa Materiel Industriel maillon pour une chaîne d’excavation et chaine d’excavation associée
FR3101892A1 (fr) * 2019-10-14 2021-04-16 Matisa Materiel Industriel Assemblage articulé de deux maillons et chaîne d’excavation associée
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WO2021074242A1 (fr) * 2019-10-14 2021-04-22 Matisa Materiel Industriel Sa Maillon pour une chaine d'excavation et chaine d'excavation associee
CN110725167A (zh) * 2019-11-19 2020-01-24 常州市瑞泰工程机械有限公司 挖掘链单元、挖掘链和边坡清筛车
CN112796180A (zh) * 2021-03-17 2021-05-14 温州市瑞基科技有限公司 一种扒渣链
WO2022257094A1 (fr) * 2021-06-11 2022-12-15 清展科技股份有限公司 Structure de cadre de guidage d'écran et dispositif d'écran la comprenant

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AT512242A2 (de) 2014-06-15
JPWO2010070741A1 (ja) 2012-05-24

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