JP2009242084A - Block moving method and apparatus by single turntable of rail mount type portal crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure and a facility of high maintainability with less failure and to attain the efficient operation of an RMT (rail mount type portal crane) 1 in a container yard 15 by moving the RMT 1 between blocks with mobility in a short time. <P>SOLUTION: A block moving apparatus is provided with a turntable 60 which is a rotation body installed at the ends of inside rails 64 on the abutting side of the adjacent first and second blocks 21, 22, and a turning rail 62 connecting circularly outside rails 65 on the non-abutting side of the first and second blocks 21, 22. <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. 8 shows an overview of the container yard 15.

  A container 31 such as a 20 ft or 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 the cargo handling block 30 including the rails 13 and the container stack 29 which is a place on which the containers 31 are placed, and the unloading is completed. These containers 31 are loaded again on other ships 16 or are transported to other places by trailers 32.

  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. However, if the weight of the crane increases, it is necessary to increase the number of tires to support it. In order to eliminate this, a rail type 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 is possible to supply power with the cable reel 20 shown in FIG. 10 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 of the first block 21 shown in FIG. In many cases, there is a request to move the crane C1 of the first block 21 to the second block 22, and the RMT is moved between the blocks (for example, the first block 21 and the second block 22) as a countermeasure at the time of failure. However, since RMT does not have a means to move between blocks, it must be dealt with by placing a large number of cranes in one block in advance, which is wasteful in terms of equipment, I have the problem of efficiency.

  On the other hand, an invention for performing inter-block movement of RMT has been made (see, for example, Patent Document 1).

  According to the invention described in Patent Document 1, in order to realize the inter-block movement of the RMT, as shown in FIG. 7, the direction perpendicular to each block (for example, the first block 21 and the second block 22). In addition, an inter-block moving rail 33 is laid to realize the inter-block movement of the RMT 37.

At this time, the RMT 37 moved to the block end portion 38 is jacked up by the jack 36 installed at the lower portion of the RMT 37, thereby removing the load applied to the wheel 11 and turning (not shown) installed between the RMT 37 and the wheel 11. The device is activated and the wheel 11 is rotated 90 degrees. Thereafter, the RMT 37 that has been jacked up is lowered so that the wheel 11 is on the inter-block movement rail 33, so that only the wheel 11 is rotated in the direction of the inter-block movement rail 33 without changing the direction of the RMT 37, and the inter-block 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, after the RMT 37 is jacked up and the wheel 11 is turned as shown in FIG. 7, the vehicle travels on the inter-block moving rail 33 and travels on the block that is the destination. Therefore, since jack-up and turning of the wheel 11 are performed again, it takes time and labor to move between the blocks, so that it is difficult to easily and dynamically move the RMT 37 between blocks.

  In addition, a mechanism such as a jack 36 for jacking up the RMT 37 and a turning device for turning the wheels 11 is required, and this turning device always takes the weight of the heavy load RMT 37 and the container 31, which causes problems. Therefore, there is a problem that maintenance is low. In particular, when used in a busy port, a complex mechanism is affected by the sea breeze, causing severe deterioration and increasing the frequency of failures.

  Further, as shown in FIG. 7, a cutting portion 25 is generated in the rail 13, and when the crane wheel 11 passes through the rail cutting portion 25, wear of a portion in contact with the wheel 11 at the corner of the rail cutting portion 25 is intense. Thus, the number of exchanges of the rail 13 and the inter-block moving rail 33 is increased.

  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 significantly reduced, and further, rail replacement work accompanying rail wear is performed. Inside, it becomes impossible to use the RMT 1 related to the rail 13, 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 RMT can be moved between blocks in a short time, and can be realized by a structure and equipment with few failures and high maintainability. The purpose is to realize efficient operation of the RMT within the network.

  In order to solve the above-mentioned problem, a block moving device using a single turntable according to the invention described in claim 1 is used for cargo handling of a container for sea transportation, and may be a traveling rail (two or a plurality of rails may be used, It may be laid in parallel) and moved by a driving force of the traveling wheel 11 along a cargo handling block consisting of a lane composed of a container and a container stack for storing containers, and the wheel 11 is rotatable on a horizontal plane. A rail-mounted portal crane (RMT1) is an inter-block moving device that moves to another block in a container yard 15 such as a harbor provided with a plurality of the blocks, and is installed at the end between adjacent blocks By turning the wheel 11 on one leg on the table 60 and driving the wheel 11 on the other leg, a turning rail 62 having an arc is formed. The by self moving, and performing the movement of the adjacent blocks (e.g., from the first block 21 to the second block 22).

  Specifically, the turntable 60 is installed at the end of the inner rail 64 that is the side where the adjacent first block 21 and second block 22 are in contact, and the rim of the wheel 11 of the RMT 1 is fitted on the turntable 60. A guide part configured to guide the first block 21 and the outer rail 65 on the side where the first block 21 and the second block 22 are not in contact with each other, and an arcuate swivel rail centering on the turntable 60 62, one wheel 11 of the RMT 1 is placed on the turntable 60, and the other wheel 11 is self-propelled on the turning rail 62 so that it can move to the next block. It is characterized by comprising.

  In the block moving device using a single turntable according to the second aspect of the present invention, a travel rail of the block extends on the turntable 60 installed at an end between adjacent blocks (for example, 21 and 22). A turn rail 61 is provided at a position where it can be formed, and the wheel 11 is fitted on the rail, and is moved by the driving force of the wheel.

  Specifically, the guide portion on the turntable 60 is connected to the inner rails 64 of the first block 21 and the second block 22, and includes a short turn rail 61. It is configured to be fitted and guided.

  According to a third aspect of the present invention, in the block moving device using a single turntable, the turntable 60 includes an alignment sensor 62 for detecting the alignment of the turn rail 61 on the turntable 60 and an alignment sensor 62. It has the rotation mechanism 63 provided with the power unit of.

  Specifically, an alignment sensor 52 for detecting alignment between the guide portion of the turntable 60 and the inner rail 64, and a rotation mechanism 63 with a power device for alignment are provided on the turntable 60. It is characterized by that.

  According to a block moving device using a single turntable according to a fourth aspect of the present invention, the top surfaces of the turntable 60, the turn rail 61, and the crane travel rail 13 are within 50 mm from the ground plane 34 near the crane travel rail. It is characterized by a step.

  According to the block moving method using the single turntable of the present invention, when the RMT 1 moves between the blocks, the necessary operations such as jacking up and turning are eliminated, and the required time is shortened and the maneuvering is performed. In particular, it is possible to easily realize the inter-block movement of RMT1.

  Since it is not necessary for the RMT 1 to include the swivel device or the jack 36, it is possible to configure the RMT 1 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 a container yard 15 such as a harbor is likely to be a machine with a simpler structure and less failure because the metal deteriorates severely due to the influence of sea breezes, etc., and the present invention satisfies this requirement. Is.

  One wheel 11 of the RMT 1 is fixed on the turntable 60 by a brake, and the other wheel 11 is rotated on the turning rail 62 so that the RMT 1 moves between the blocks. Here, the turntable 60 automatically rotates due to the influence of the direction change accompanying the movement of the RMT 1, and therefore does not require particularly large power, and as a result, the structure of the turntable 60 is simple without a large power unit. The structure can be improved, and the maintainability is improved.

  In addition, the upper surface of the turn rail 61 and the turning rail 62 laid on the turntable 60 is laid so as to have a small step within 50 mm from the ground plane 34 of the container yard 15, thereby hindering the travel of the trailer 32. It is configured so that there is no.

  Furthermore, by installing the alignment sensor 52 for aligning the guide portion of the turntable 60 and the rail 13 of the block, the rail connection is made accurate and accidents such as derailment and derailment of the RMT 1 are prevented. Made it possible.

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

  FIG. 1 is a schematic plan view of the present invention, showing how the RMT 1 moves from the first block 21 to the second block 22 using the turntable 60.

  2 is an enlarged plan view of the turntable 60, and FIG. 3 is a cross-sectional view taken along the line AA of FIG.

  4 and 5 show an embodiment in the container yard 15 of the block moving method and apparatus using the single turntable according to the present invention.

  FIG. 6 shows an enlarged view of the intersection of the turning rails 62.

  FIG. 9 is a schematic view when the RMT 1 is loaded and shows a state in which 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. 10 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.

  As shown in FIG. 1, the outer rail 65 of the adjacent first block 21 and second block 22 is connected by an arcuate swivel rail 62, and the inner rail 64 is connected to a turn rail 61 of the turntable 60, It is comprised so that it may become a substantially U shape as a whole.

  For example, when the RMT 1 is moved from the first block 21 to the second block 22, the RMT 1 is first moved to the end of the first block 21 and one wheel 11 of the RMT 1 is placed on the turntable 60. At this time, the wheel 11 on the turntable 60 is locked by the brake, and the wheel 11 on the other turning rail 62 is rotated to move on the turning rail 62.

  Since RMT1 moves on the turning rail 62 and RMT1 rotates, the turntable 60 rotates by the external force. After that, after the RMT1 has finished moving to the front of the second block 22, which is the destination block, the movement of the wheel 11 placed on the turntable 60 is released, thereby completing the movement to the second block 22.

  As shown in FIG. 2, the end portion of the inner rail 64 is connected to the turn rail 61 via the rail cutting portion 25, and an alignment sensor 52 is installed to accurately perform this communication.

  If the inner rail 64 and the turn rail 61 are not positioned on a straight line, the RMT 1 may be derailed or toppled over, so the alignment sensor 52 monitors the direction of the turntable 60.

  Moreover, you may mount the wheel sensor 53 for monitoring whether the wheel 11 is mounted in the position which does not protrude from the turntable 60. FIG.

  FIG. 3 is a cross-sectional view taken along the line AA in FIG. By laying the upper surface of the turn rail 61 so that the level difference with the ground plane 34 is within 50 mm, the influence on other moving bodies moving in the container yard 15 such as the trailer 32 is reduced.

  In addition, when the turntable 60 is rotated for some reason and the inner rail 64 and the turn rail 61 are displaced from each other, a rotation mechanism 63 that rotates the turntable 60 is installed to eliminate the displacement. Yes. Since it is the rotation mechanism 63 for aligning the turntable 60, the output of the drive device provided side by side does not need to be so large.

  FIG. 4 shows an embodiment in which a turntable 60 and a turning rail 62 are provided for every two blocks.

  FIG. 5 shows an embodiment in which a turntable 60 and a turning rail 62 are provided between all blocks. By configuring as shown in FIG. 5, the amount of the turning rail 62 and the turntable 60 to be laid increases compared to the case of FIG. 4, but the RMT 1 can be moved to any arbitrary block.

  FIG. 6 shows an enlarged view of the X-shaped intersection 25a which is the intersection of the turning rails 62. The swing rail 62 is obliquely cut and connected by the short rail 26 so that the RMT 1 can pass over the swing rail 62.

  As described above, the block moving method and apparatus using the single turntable according to the present invention enables the movement of the RMT 1 between blocks in a short time, and is realized by a structure and equipment with less failure and high maintainability. 15 enables efficient operation of RMT1.

It is the top view which showed the outline of the block moving apparatus by the single turntable of this invention. It is an enlarged view of the one turntable periphery part of this invention. It is sectional drawing of the single turntable of this invention. It is the schematic of the Example of this invention. It is the schematic of the Example of this invention. It is an enlarged view of a turning rail intersection. It is the schematic of the conventional interlane moving apparatus. It is the schematic which showed the whole container yards, such as a port. It is the schematic which showed the state of the cargo handling by RMT. It is a side view of RMT.

Explanation of symbols

1 Rail-mounted portal crane (RMT)
11 Wheel 15 Container Yard 29 Container Stack 30 Cargo Handling Block (Block)
52 Position sensor 53 Wheel sensor 60 Turntable 61 Turn rail 62 Swivel rail 63 Rotating mechanism 64 Inner rail 65 Outer rail

Claims (4)

  Used for cargo handling of marine transport containers, it can be moved by the driving force of traveling wheels along a cargo handling block consisting of a lane composed of traveling rails and a container stack for storing containers, and the wheels can be rotated in a horizontal plane. The rail-mounted gate crane is a block-to-block moving device that moves to another block in a container yard such as a harbor provided with a plurality of the blocks, on a turntable installed at an end between adjacent blocks The wheel of one leg is stopped and the wheel of the other leg is driven to move on an arcuate turning rail and move to an adjacent block. A cargo handling block moving device for portal cranes.   On the turntable installed at the end between the adjacent blocks, a turn rail is provided at a position where the travel rail of the block can be extended, and the travel wheel is fitted on the rail, 2. The cargo handling block moving device for a portal crane according to claim 1, wherein the moving device moves by a driving force.   3. The turntable includes a rotation mechanism including an alignment sensor that detects alignment of a turn rail on the turntable, and a power device for alignment. The cargo handling block moving device of the portal crane described in 1.   4. The gate according to claim 1, wherein upper surfaces of the turntable, the turn rail, and the crane traveling rail have a level difference within 50 mm from a ground plane near the crane traveling rail. Type crane load handling block moving device.

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