JP2009242085A - Switchback type lane moving method and apparatus for rail mount type portal crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain movement between lanes by a structure and a facility of high maintainability with less failure and to attain the efficient operation of a rail mount type portal crane (RMT) in a container yard. <P>SOLUTION: The RMT 1 used for handling containers for marine transportation and moving to the other cargo-handling block 30 in the container yard provided with a plurality of cargo-handling blocks, has a traveling wheel support means (a support part) allowing each traveling wheel to be rotated on a horizontal face to travel on a gently curved intersection rail 27. A lane moving method for the RMT 1 includes steps of allowing the RMT 1 to move by the support part into a switchback area 10 constituted so that travel rails 13 of the adjacent first lane 21 intersect in a gentle curve and allowing the RMT 1 to move into the other second lane 22 from the switchback area 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rail-mounted portal crane that transports containers in a container yard such as a harbor, and equipment in the container yard.

  In container yards such as harbors, containers are loaded and unloaded between ships and trailers by cranes.

  FIG. 15 shows an overview of the container yard 15.

  A container 31 such as a 20 ft container or a 40 ft container transported by a ship 16 such as a container ship is unloaded by a container crane 17 installed on a quay and mounted on a trailer 32 that travels in a container yard 15. The containers 31 mounted on the trailer 32 are regularly arranged in a plurality of rows by the portal crane 1 on a cargo handling block 30 including a rail 13 and a container stack 29 which is a place for placing the containers, and the unloading is completed. These containers 31 are loaded again on other ships 16 or are transported to other places by trailers 32. A similar container yard may be used as an inland cargo terminal.

  Here, the portal crane 1 used is roughly classified into a crane that moves by tire (hereinafter, RTT) and a rail-mounted crane (hereinafter, RMT) that moves by a combination of rails and wheels. The RTT can move freely in the yard 15, but when the weight of the transported item or its own weight increases, the number of tires for supporting it increases. When the weight of the transported object such as the container 31 is large, the tire cannot support it, so RMT is adopted.

  In addition, the RMT moves on the rail 13 laid in the yard 15 so that the traveling direction is defined, positioning becomes easy, and stable transportation with little load fluctuation is realized when moving a suspended load. . Furthermore, since it moves along the rail 13, it becomes possible to supply power with the cable reel 20 shown in FIG. 11 which is a side view of the RMT. Environmental performance is also high.

  On the other hand, in the RMT, in order to increase the efficiency and leveling of the work in the container yard 15, for example, the work load in the first lane 21 shown in FIG. In many cases, there is a request to move the crane C1 in the first lane 21 to the second lane 22, and the RMT is moved between lanes (for example, the first lane 21 and the second lane 22) as a countermeasure at the time of failure. However, since RMT does not have a means to move between lanes, there are cases where a large number of cranes are arranged in advance in one lane, which may be dealt with, and is wasteful in terms of equipment. I had the problem of efficiency.

  On the other hand, an invention for performing RMT movement between lanes has been made (see, for example, Patent Document 1).

  According to the invention described in Patent Document 1, in order to realize the inter-lane movement of the RMT, as shown in FIG. 12, the direction perpendicular to each lane (for example, the first lane 21 and the second lane 22). In addition, an inter-lane movement rail 33 is laid to realize the inter-lane movement of the RMT 37.

At this time, the RMT 37 that has moved to the lane end 38 for cargo handling work is jacked up by the jack 36 installed at the lower part of the RMT 37, thereby removing the load applied to the wheel 11 and installed between the RMT 37 and the wheel 11. A turning device (not shown) is operated to rotate the wheel 11 by 90 degrees. Thereafter, the RMT 37 that has been jacked up is lowered so that the wheel 11 is on the inter-lane movement rail 33, so that only the wheel 11 is rotated in the direction of the inter-lane movement rail 33 without changing the direction of the RMT 37, and the inter-lane movement is performed. It is configured to move on the rail 33 for use.
JP 2004-175515 A

  However, in the method described in Patent Document 1, the rail 13 has a cutting portion 25 as shown in FIG. 12, and when the crane wheel 11 passes through the rail cutting portion 25, the corner of the rail cutting portion 25 is used. As a result, the wear of the portion in contact with the wheel 11 becomes severe, and the number of replacements of the rail 13 and the rail 33 for movement between lanes increases.

  In addition, a mechanism such as a jack 36 for jacking up the RMT 37 and a turning device for turning the wheel 11 by 90 degrees, for example, are necessary. These mechanisms always take the weight of the heavy load RMT 1 and the container 31. For this reason, there is a problem that defects are likely to occur, and therefore maintenance is low. In particular, when used in a harbor, a complicated mechanism is affected by the sea breeze, resulting in severe deterioration and increased failure frequency.

  In particular, in recent years, container yards 15 such as harbors are often in full operation for 24 hours, and if the maintenance frequency of the RMT 37 is increased, the operation rate of the container yard 15 is remarkably lowered, and further, rail replacement work accompanying rail wear. During this, the use of the RMT 37 related to the rail 13 becomes impossible, so that a significant decrease in the operation rate of the container yard 15 is unavoidable.

  Accordingly, the present invention has been made to solve the above-described problems, and the movement of RMT between lanes is realized by a structure and equipment with few failures and high maintainability, and efficient RMT in the container yard 15 is achieved. The purpose is to realize the operation.

  In order to solve the above-mentioned problem, the switchback type lane moving method according to the first aspect of the present invention is used for cargo handling of the marine transport container 31 as shown in FIG. It may be a book or may be laid in parallel) and is moved by the driving force of the traveling wheels 11 along the cargo handling block 30 comprising the lanes 21 and 22 and the container stack 29 for storing the containers 31. The RMT 1 is a lane movement method in which the RMT 1 moves to another cargo handling block 30 in the container yard 15 provided with a plurality of the cargo handling blocks 30, and the RMT 1 travels in order to travel on the gently curved intersection rail 27. The wheel 11 has a traveling wheel support means (support portion 35) that allows the wheel 11 to rotate on a horizontal plane, and the RMT 1 is adjacent to the support portion 35. Moving to the switchback area 10 configured so that the traveling rails 13 of the vehicle (first lane 21) intersect with a gentle curve, and from the switchback area 10 to another lane (second lane 22) And a moving process.

  Specifically, a switchback composed of a lane intersection 23 where adjacent first lanes 21 and second lanes 22 approach and intersect with a gentle curve, and a lane overlap unit 24 where the intersecting lanes overlap to form one lane. On the lane designated as area 10, the RMT 1 moves from the first lane 21 to the first lane-side lane intersection 23 and the lane overlapping part 24, and from the lane overlapping part 24 to the second lane-side lane intersection 23, second lane It moves to the lane 22.

  Further, as shown in FIG. 10 which is a front view of the RMT 1 and FIG. 11 which is a side view, the plurality of traveling wheels 11 arranged below the support portion 35 can freely move on the horizontal plane by the turning of the support portion 35. It is characterized by using RMT1 that is configured to rotate in a straight line.

  The switchback type lane moving device according to the invention described in claim 2 is used for cargo handling of the marine transport container 31 and may be a traveling rail 13 (two or a plurality of rails may be provided, and laid in parallel. The RMT 1 that moves by the driving force of the traveling wheels 11 along the loading / unloading block 30 that includes the lanes 21 and 22 and the container stack 29 that stores the containers 31 is a container provided with a plurality of the loading / unloading blocks 30. Two lane moving devices that move parallel to other cargo handling blocks 30 in the yard 15 and intersect with X-shaped intersections 25a where the rails 13 of the adjacent lanes (first lanes 21) intersect at a loose curve. A switchback area 10 having a Y-shaped intersection 25b where 13 overlaps one is installed, and the water for the RMT 1 to travel on a gentle curve Characterized by comprising a traveling wheel 11 which is rotatable in the plane.

  Specifically, the switchback area 10 is composed of a lane intersection 23 where adjacent first lanes 21 and second lanes 22 approach and intersect with a gentle curve, and a lane overlap portion 24 where the intersecting lanes overlap to form one lane. It is characterized by comprising.

  In the switchback type lane moving device according to the third aspect of the present invention, the rail cut surfaces at the X-shaped intersection 25a and the Y-shaped intersection 25b are cut obliquely with respect to the rail longitudinal direction, and the X-shaped intersection 25a. A parallelogram-shaped short rail 26 is provided.

  Specifically, as shown in FIGS. 2 and 3 which are enlarged views of the rail cutting portion, the rail cutting surface at the rail intersection of the lane intersection 23 is cut obliquely with respect to the rail short direction. .

  In addition, as shown in FIG. 2, the X-shaped intersection 25a, which is a rail intersection where the rails inside the first lane 21 and the second lane 22 intersect, gradually approaches and the rail cut surface is inclined. The rails 13 in the first lane 21 and the second lane 22, the parallelogram-shaped short rails 26 provided so as to face the rail cut surface, and the intersections provided so as to face the cut surface of the short rail 26 Part rail 27.

  Furthermore, as shown in FIG. 3, at the Y-shaped intersection 25b, which is a rail intersection where the rail inside the first lane 21 and the rail outside the second lane 22 intersect, approach slowly and cut the rail. The rails 13 of the first lane 21 and the second lane 22 whose surfaces are inclined are provided, and one overlapping portion rail 28 provided so as to face the rail cut surface.

  In addition, when the RMT 1 passes through the lane intersection 23, the traveling wheel 11 moves smoothly on the rail 13.

  According to a fourth aspect of the present invention, the switchback lane moving device is characterized in that the rail is laid so that the upper surface of the rail 13 is a step within 50 mm from the ground plane 34 near the rail.

  Specifically, as shown in FIG. 9, the rail 13 is laid so that the upper surface of the rail 13 has the same height as the ground plane 34 in the container yard 15.

  By the switchback type lane movement method of the present invention, the jack 36 for removing the load of the wheel 11 of the RMT 37 and rotating it, which was necessary in the conventional method shown in FIG. Since it is not necessary to provide a turning device or the like for rotating in the same direction as 33, it is possible to configure with a simple mechanism. As a result, the factors causing the failure of RMT1 are reduced, and the maintainability is improved. In particular, the RMT 1 used in the container yard 15 such as a harbor is likely to be a machine with a simpler structure and less failure because the fatigue and deterioration of the metal become severe due to the influence of sea breeze, etc. It satisfies.

  A plurality of traveling wheels 11 arranged below the support portion 35 of the RMT shown in FIG. Accordingly, it is possible to travel while reducing the vibration applied to the RMT1.

  As shown in FIG. 6, the rail cutting part 25 is inclined and the two rails 13 are superposed to reduce the wear and fatigue of the rails 13 and to reduce the influence of vibration and the like on the RMT 1. It became possible. In particular, it is possible to select a rail arrangement having a large number of rail cutting portions 25, and it is possible to flexibly arrange the rail arrangement in the container yard 15 in accordance with the circumstances of each container yard 15.

  As shown in FIG. 9, by laying the rail 13 so that the upper surface of the rail 13 does not protrude from the ground plane 34 of the container yard 15, preferably the same height, the container yard 15 shown in FIG. The rail 13 can be laid without affecting the travel of the trailer 32 traveling inside. Thereby, the freedom degree of rail arrangement | positioning in the container yard 15 raised.

  By using the switchback type lane moving method and apparatus of the present invention for every two lanes, the rail arrangement is small with only a small number of rails 13 and the rail cutting portion 25 is small, and the movement of the RMT 1 between the two lanes is possible. It was possible to cope with the situation such as the amount of work and the breakdown.

  By using the switchback lane moving method and apparatus of the present invention for every lane, it is possible to move the RMT 1 to any lane according to the situation. These rail arrangements can be freely combined depending on the circumstances of the target container yard 15.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic diagram when the present invention is applied between two lanes. The first lane 21 and the second lane 22 are constituted by a pair of parallel rails 13, and the lane and a container stack 29 which is a place for placing the container are combined to form a cargo handling block 30. An RMT 1 corresponding to the lane is installed. The rail 13 is laid so that the conventional lane edge part is extended and the lane crossing part 23 and the lane overlapping part 24 are provided.

  In the lane intersection 23, the rails 13 of the first lane 21 and the second lane 22 gently intersect to form an X-shaped intersection 25a and a Y-shaped intersection 25b.

  In the lane overlapping part 24, one overlapping part rail 28 is formed so that two intersecting part rails 27 intersecting each other at the lane intersecting part 23 are overlapped.

  FIG. 2 shows an enlarged view of the X-shaped intersection 25a. A state is shown in which the rail 13 communicates with an intersection rail 27 via a parallelogram-shaped short rail 26.

  FIG. 3 shows an enlarged view of the Y-shaped intersection 25b. A state is shown in which two crossing rails 27 communicate with one overlapping portion rail 28 via an oblique rail cutting portion 25.

  FIG. 4 shows the state of the wheel 11 passing through the conventional rail cutting part 25, and FIG.

  FIG. 6 shows a state of the wheel 11 passing through the rail cutting part 25 in which the cutting surface adopted in the present invention is inclined, and FIG. 7 shows a BB sectional view and a CC sectional view thereof. .

  FIG. 8 shows that the wheels 11 are on the rails 13 and that there are collars 18 on both side surfaces of the wheels 11.

  FIG. 9 shows a cross-sectional view of the rail and its periphery when the rail is laid in the present invention. The rail 13 is laid so that the upper surface of the rail 13 is the same as or lower than the ground plane 34 in the container yard 15.

  FIG. 10 is a schematic view when the RMT 1 is loaded, and shows a state where the RMT 1 which is a rail-mounted portal crane lifts the container 31 with the trolley 12 and mounts it on the waiting trailer 32. The RMT 1 uses the wheels 11 when moving.

  FIG. 11 is a side view of the RMT 1. The RMT 1 moves on the rail 13 by a plurality of wheels 11 installed via a support portion 35 disposed in the lower part.

  FIG. 13 shows a schematic diagram of the present invention for every two lanes.

FIG. 14 shows a schematic diagram in which the present invention is implemented for every lane.
Example 1
The switchback lane moving method will be described by taking as an example the case where the RMT 1 on the first lane 21 shown in FIG. 1 is moved to the second lane 22.

  FIG. 1 shows an enlarged end of a lane laid in the container yard 15 shown in FIG. Here, the first lane 21 and the second lane 22 represent two arbitrary lanes in the container yard 15.

  The ends of the first lane 21 and the second lane 22 are extended, and the portion that intersects with a gentle curve is the lane intersection 23, the portion that overlaps the lane overlap portion 24, and in particular the rail 13 of the lane intersection 23 The intersection rail 27 and the rail 13 of the lane overlap portion 24 are referred to as overlap portion rails 28.

  Here, in the lane overlap portion 28, the trajectories of the first lane 21 and the second lane 22 overlap, and the overlap portion rail 28 is constituted by a set of parallel rails 13.

  In the lane intersection 27, a portion laid to straddle the rails 13 is defined as an X-shaped intersection 25a, and a portion laid so as to overlap the rails 13 is defined as a Y-shaped intersection 25b.

  The RMT 1 in the first lane 21 passes through the lane intersection 23 on the first lane side and moves to the lane polymerization 24. Thereafter, the vehicle passes through the lane intersection 23 on the second lane side, and the movement to the second lane 22 is completed. In this way, RMT1 can be moved between lanes.

  2 and 3 show enlarged views of the X-shaped intersection 25a and the Y-shaped intersection 25b. As shown in FIG. 8, the wheel 11 of the RMT 1 has collars 18 on both sides of the wheel 11 unlike a train and the like, and the rails 13 are completely cut at the intersection to allow the collar 18 to pass. There is a need to. Therefore, in the X-shaped intersection 25a, the rail 13 and the intersection rail 27 can be connected by using the parallelogram-shaped short rail 26. In the Y-shaped intersection 25b, the two intersection rails 27 are configured to communicate with one overlapping rail 28, which is characterized in that the rail cutting portion 25 is cut particularly obliquely.

  In the present invention, the rail cutting part 25 is slanted as described above, thereby reducing the problems of wear and fatigue that are problematic in the rail cutting part 25. Details will be described below.

  As shown in FIGS. 4 and 5, the conventional rail cutting portion 25 is perpendicular to the longitudinal direction of the rail 13. Here, when the wheel 11 passes through the rail cutting part 25, there is a moment when the tangent of the wheel 11 that is in contact with the upper surface of the rail 13 does not contact the upper surface of the rail 13. At this time, the weight of the RMT 1 is concentrated on the upper corner of the rail cutting portion 25, which causes wear and fatigue of the rail 13.

  When the oblique rail cutting part 25 employed in the present invention shown in FIG. 6 and FIG. 7 is used, the tangent line where the upper surface of the rail 13 and the wheel 11 are in contact as shown in FIG. It always touches one of the rails 13 to support the weight of the RMT 1.

  For example, when the wheel 11 passes through the rail cutting part 25 shown in FIG. 7B, the wheel 11 is on the rail 13 as viewed from the opposite side of the rail 13, and the weight of the RMT 1 is measured on the upper surface of the rail 13. To tell. For this reason, the weight of the RMT 1 is always supported on the upper surface of the rail 13, and the wear and fatigue of the rail 13 are greatly reduced.

  Further, since the weight of RMT1 can always be supported by the upper surface of the rail 13, the center of gravity of RMT1 is stabilized. That is, the vibration of the RMT 1 when passing through the rail cutting part 25 is reduced, and thereby, it is possible to further reduce the load on the rail 13.

  FIG. 9 shows a cross-sectional view of the rail 13 laid in the container yard 15. By making the upper surface of the rail 13 lower than the ground plane 34 of the container yard 15, preferably at the same height, the rail 13 laid in the container yard 15 is configured not to obstruct the passage of the trailer 32. Yes.

  FIG. 13 shows an example in which two lanes are taken as one set, and the switchback lane moving method and apparatus of the present invention is adopted for each set.

At this time, the RMT 1 is limited to movement between adjacent lanes, but there is an advantage that the amount of rails 13 to be laid is small and the number of rail cut surfaces 25 that cause wear and fatigue of the rails 13 is also small. is there.
(Example 2)
FIG. 14 shows an example in which the switchback type lane moving method and apparatus of the present invention is adopted between all lanes.

  At this time, the amount of rails 13 to be laid is large and the number of rail cut surfaces 25 is also large. However, since RMT1 can be moved to an arbitrary lane, RMT1 can be moved flexibly in container yard 15. It is possible to increase the cargo handling efficiency at a higher level.

  Moreover, according to the situation for each container yard 15, it is possible to realize further efficient operation of the RMT 1 by configuring different rail arrangements such as FIGS. 13 and 14 in combination.

  As described above, the switchback type lane movement method and apparatus of the present invention realizes the movement of RMT1 between lanes with a structure and equipment with few failures and high maintainability, and efficient operation of RMT1 in the container yard 15. Became possible.

It is the schematic of the switchback type | mold lane moving apparatus of this invention. It is an enlarged view of the rail crossing part in the switchback type | mold lane moving apparatus of this invention. It is an enlarged view of the rail crossing part in the switchback type lane moving apparatus of this invention. It is a rail cutting part top view in the conventional lane moving apparatus. It is a rail cut part side view in the conventional lane movement apparatus. It is a rail cutting part top view in the switchback type lane moving device of the present invention. It is a rail cut part side view in the switchback type lane moving device of the present invention. It is the front view which showed the positional relationship of a rail and a wheel. It is sectional drawing at the time of rail laying in the switchback type lane moving apparatus of this invention. It is the schematic which showed the state of the cargo handling by RMT. It is a side view of RMT. It is the schematic of the conventional lane movement apparatus. It is the schematic of the Example of this invention. It is the schematic of the Example of this invention. It is the schematic which showed the whole container yards, such as a port.

Explanation of symbols

1 Rail-mounted portal crane (RMT)
DESCRIPTION OF SYMBOLS 10 Switchback area 11 Wheel 13 Rail 15 Container yard 21 1st lane 22 2nd lane 23 Lane crossing part 24 Lane overlap part 25 Rail cutting part 25a X-shaped crossing part 25b Y-shaped crossing part 26 Short rail 29 Container stack 30 Loading block

Claims (4)

A rail-mounted portal crane that is used for cargo handling of marine transport containers and moves by a driving force of traveling wheels along a cargo handling block composed of a lane composed of traveling rails and a container stack for storing containers, A lane moving method for moving to another cargo handling block in a container yard provided with a plurality of cargo handling blocks,
The crane has traveling wheel support means for allowing the traveling wheel to rotate on a horizontal plane in order to travel on a gently curved rail, and the crane is used for the traveling of the lane adjacent to the traveling wheel support means. A method of moving a switchback lane, comprising the steps of: moving to a switchback area configured so that the rails intersect at a gentle curve; and moving to another lane from the switchback area. A rail-mounted portal crane that is used for cargo handling of marine transport containers and moves by a driving force of traveling wheels along a cargo handling block composed of a lane composed of traveling rails and a container stack for storing containers, A lane moving device that moves to another cargo handling block in a container yard provided with a plurality of cargo handling blocks,
To install a switchback area with a Y-shaped intersection where two rails intersecting with an X-shaped intersection where the rails of the adjacent lanes intersect at a gentle curve, and the crane travels on a gentle curve A switchback type lane moving device comprising a traveling wheel that is rotatable on a horizontal plane.   The rail cutting surface at the X-shaped intersection and the Y-shaped intersection is cut obliquely with respect to the rail longitudinal direction, and the parallelogram-shaped short rail is provided at the X-shaped intersection. Switchback lane transfer device.   4. The switchback lane moving device according to claim 2, wherein the rail is laid so that an upper surface of the rail has a level difference within 50 mm from a ground plane near the rail.