WO2011155232A1

WO2011155232A1 - Crane system

Info

Publication number: WO2011155232A1
Application number: PCT/JP2011/052491
Authority: WO
Inventors: 内田　浩二; 伸郎吉岡; 英樹田之上
Original assignee: 三菱重工業株式会社
Priority date: 2010-06-08
Filing date: 2011-02-07
Publication date: 2011-12-15
Also published as: JP2011255999A; TW201206816A

Abstract

A crane system comprising: an insulated trolley line disposed at a side of the travel path for a rubber-tired crane and having a conductor line exposed at one surface of the insulated trolley line; a current collector carriage provided on the side of the rubber-tired crane which faces the insulated trolley line, the current collector carriage being provided so as to be movable in the widthwise direction of the travel path; and a support mechanism provided on the current collector carriage and supporting the current collector so that the current collector can move in the direction in which the current collector approaches or separates from said surface of the insulated trolley line.

Description

Crane system

The present invention relates to a crane system that includes a tire-type crane (Rubber Tired Crane) that travels by feeding power from a battery and is used for loading and unloading loads such as containers.
This application claims priority based on Japanese Patent Application No. 2010-131052 filed in Japan on June 8, 2010, the contents of which are incorporated herein by reference.

The container yard, which is a place where containers are temporarily stored, is provided with a crane system using a yard crane that loads and unloads containers while traveling along a plurality of traveling lanes provided on the road surface. . As the yard crane, a tire type portal crane having a portal shape and traveling with tires, so-called RTG (Rubber Tired Gantry Crane), is often used.

Some RTGs run along a driving lane by automatic driving. In this case, the RTG is equipped with a magnetic sensor, and ground guidelines made of a magnetic material are laid along the traveling lane. And the position of RTG is detected by detecting the magnetism of a ground guideline with a magnetic sensor, and the deviation from a ground guideline is controlled. Thereby, RTG is made to run along the ground guideline.

In addition, due to the recent increase in environmental awareness, the electric type is attracting attention as a driving system for RTG. From such a point of view, development of a so-called ground-fed RTG that is equipped with a battery as a drive source and receives power from a power supply line provided along a traveling lane to charge the battery is progressing (for example, patents) Reference 1). As shown in FIG. 4, the RTG described in Patent Document 1 is a current collector 2 provided in the RTG with respect to a rigid trolley wire (main feed rail 8) that is a current-carrying portion provided on the traveling lane. Is fed from the ground by pressing from the side.

JP 2009-242101 A

However, the conventional crane system described in Patent Document 1 has the following problems. For example, in the rigid trolley wire (main power supply rail 8) provided on the traveling lane, as shown in FIG. 3, four power supply rails that are energization portions are exposed to the outside. Therefore, there is a risk that an operator may get an electric shock by touching the power supply rail.

Also, in a crane system equipped with a conventional RTG, the RTG travels along the travel lane by automatic operation. In this case, a slight meandering of the RTG occurs in the width direction of the traveling lane due to a shift in the distance or angle that occurs during automatic driving. Here, the RTG described in Patent Document 1 includes a pantograph-shaped expansion / contraction device 3 that supports the current collector 2 as shown in FIG. By expanding and contracting the expansion and contraction device 3, the position of the current collector 2 can be adjusted in the width direction of the traveling lane. According to such a configuration, even when the RTG moves from a certain traveling lane to another adjacent traveling lane, the current collector 2 is moved relative to the main power supply rail 8 by adjusting the expansion / contraction of the expansion / contraction device. Can be pressed reliably. However, the expansion / contraction device 3 cannot cope with meandering that occurs during the running of the RTG as described above, and the contact between the current collector 2 and the main power supply rail 8 may be insufficient.

Also, since the RTG travels with tires, some subduction also occurs in the vertical direction due to deformation of the tires. However, the RTG described in Patent Document 1 cannot cope with the sinking in the vertical direction (vertical direction), and the contact between the current collector 2 and the main power supply rail 8 may be insufficient. .

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a crane system including a tire-type crane that has a low risk of electric shock when an operator touches a power supply line. . Another object of the present invention is to provide a crane system that can offset the displacement of the position of the tire-type crane, such as meandering in the width direction of the travel lane and subduction in the vertical direction due to tire travel, with a simple configuration. I will.

In order to achieve the above object, the present invention adopts the following configuration. That is, the crane system according to the present invention has the following configuration. Tire type crane. A feeder line that is disposed along the traveling route on the side of the traveling route of the tire crane and the conductor is exposed on one surface. A current collector truck provided on the tire crane and provided in a position corresponding to the power supply line on the power supply line side of the tire crane so as to be movable in the width direction of the travel route. A current collector that can be electrically connected to the feeder. A support mechanism that is provided on the current collector carriage and supports the current collector so as to be movable in a direction close to or away from one surface of the feeder line.

According to such a configuration, the current collector cart is moved in the width direction of the travel route, and the current collector is moved in a direction in which the current collector is brought closer to one surface of the power feed line by the support mechanism. It can be made to contact.

The conductor may be exposed on the lower surface of the feeder line.

According to such a configuration, since the conductor is exposed only on the lower surface of the power supply line and the conductor is not exposed on the other surface, it is possible to prevent the operator from touching the conductor and receiving an electric shock.

The current collector truck may be supported by a rail extending to the side of the tire crane along the width direction of the travel path.

According to such a configuration, the current collector truck can be provided on the side close to the power supply line of the tire-type crane so as to be movable in the width direction of the travel route with a simple configuration.

The current collector cart may be supported by the rail so as to be movable up and down and horizontally.

According to such a configuration, even when the tire type crane meanders in the width direction of the traveling lane or sinks in the vertical direction, the meandering or sinking can be performed by moving the current collecting carriage vertically or horizontally. Can be offset.

Further, the above crane system may include a vertical direction guide plate and a width direction guide plate. The up-and-down direction guide plate contacts the part of the current collector cart along the power supply line to guide the current collector cart in the vertical direction. The width direction guide plate is in contact with a part of the current collector cart along the power supply line to guide the current collector cart in the width direction of the travel route.

According to such a configuration, the current collecting cart is guided to the track that should normally pass through the vertical direction guide plate and the width direction guide plate. Thus, the current collector can be reliably brought into contact with one surface of the power supply line regardless of meandering or sinking of the tire crane.

The width direction guide plate may start guiding the current collecting cart along the traveling direction of the tire crane at a position rearward (upstream) of the traveling direction with respect to the vertical direction guide plate.

According to the present invention, it is possible to provide a crane system with a low risk of an operator touching a power supply line and receiving an electric shock. In addition, the meandering in the width direction of the traveling lane and the sinking in the vertical direction due to the traveling of the tire type crane can be offset by a simple configuration, and the current collector is reliably brought into contact with one surface of the feeder line. Can provide a crane system.

1 is a schematic perspective view showing a crane system according to an embodiment of the present invention. In FIG. 1, it is the partial expansion perspective view which expanded the peripheral part of one certain RTG. It is a schematic side view which shows the structure of a power receiving apparatus. It is a schematic plan view which shows the structure of a power receiving apparatus. It is a schematic longitudinal cross-sectional view which shows the attachment structure to the roller support piece of an upper guide roller pair. It is a schematic perspective view which shows the peripheral part of the upper slider pair and lower slider pair in the outer surface of a trolley | bogie main body. It is operation | movement explanatory drawing of an upper current collection unit. It is the schematic perspective view which looked at the electric power feeder from the center of the driving | running | working lane toward the outer side. It is a schematic perspective view which shows an insulated trolley wire. It is a figure for demonstrating positioning of the driving | running | working lane width direction of RTG. It is a figure for demonstrating positioning of the driving | running | working lane width direction of RTG. It is a figure for demonstrating positioning of the driving | running | working lane width direction of RTG. It is a figure for demonstrating positioning of the up-down direction of RTG. It is a figure for demonstrating positioning of the up-down direction of RTG. It is a figure for demonstrating positioning of the up-down direction of RTG. It is a figure explaining operation | movement of a trolley | bogie main body and an upper guide roller pair at the time of the positioning of a collector trolley | bogie in the up-down direction. It is a schematic side view which shows the modification of a flipper. FIG. 6 is a schematic plan view showing a modified example of the roller guide plate 26. It is a schematic side view which shows the modification of the base 28 for traveling rollers.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the structure of the crane system provided with the tire type crane which concerns on 1st Embodiment of this invention is demonstrated. FIG. 1 is a schematic perspective view showing a crane system 1 including a plurality of tire cranes (self-propelled devices) according to the present embodiment. The crane system 1 includes a plurality of travel lanes R (travel routes), a tire-type crane 10 (hereinafter referred to as “RTG”), and a power feeding unit 20. The traveling lane R is installed in a container yard Y in which the containers C are accumulated. The tire crane 10 travels along each travel lane R. The power supply unit 20 is provided in each traveling lane R.

The travel lane R defines the travel range of each RTG 10.
Here, the direction in which the travel lane R extends is defined as the travel direction of the RTG 10. The direction crossing the travel lane R is defined as the width direction of the travel lane R (lane width direction). Further, the direction orthogonal to the traveling direction of the RTG 10 is defined as the width direction of the RTG 10. Further, in the width direction of the travel lane R and the RTG 10, with respect to a certain position, a side closer to the center of the travel lane R or the RTG 10 than that position is defined as an inner side, and a far side is defined as an outer side.
On the road surface of the traveling lane R, as shown in FIG. 1, the ground guide line G is laid on one side in the width direction of the RTG 10, that is, outside one end portion in the width direction of the RTG 10. This ground guideline G is a wire rod that is provided to guide the RTG 10 in the traveling direction and contains a magnetic material. In this embodiment, the ground guide line G is provided on one side of the RTG 10 in the width direction. However, the ground guideline G may be provided on both sides of the RTG 10 in the width direction, that is, outside the both ends of the RTG 10 in the width direction, or provided inside one end or both ends of the RTG 10 in the width direction. Also good. In the present embodiment, three traveling lanes R are provided in the container yard Y, but the number of traveling lanes R can be changed as appropriate.

The RTG 10 is a crane that loads and unloads cargo such as container C (hereinafter simply referred to as “container C”) from the trailer and accumulates it in the container yard Y or loads the container C accumulated in the container yard Y onto the trailer. It is. Here, FIG. 2 is a partially enlarged perspective view in which the peripheral part of one RTG 10 in FIG. 1 is enlarged. The RTG 10 has the following configuration. A portal crane body 11. A tire row 12 provided at the lower ends of both sides of the crane body 11 in the width direction. A magnetic sensor (not shown) provided in the periphery of the tire row 12 in the crane body 11. A power receiving device 13 provided at a position immediately above the tire row 12 on one side in the width direction of the crane body 11. An electric chamber 14 provided at a position directly above the power receiving device 13 and provided with a breaker (not shown) or the like. A battery 15 provided at a position opposite to the electric chamber 14 in the crane body 11. A suspension device 16 provided on the top of the crane body 11.
The width direction of the RTG 10, the width direction of the crane body 11, and the width direction of the travel lane R may be parallel.

In the RTG 10, the power supplied from the power supply unit 20 is received by the power receiving device 13 and charged to the battery 15. Then, the tire row 12 is driven using this electric power as a drive source. Further, the position of the RTG 10 is detected by detecting the magnetism of the ground guideline G with a magnetic sensor, and the deviation from the ground guideline G is controlled. For example, the position of the RTG 10 or the power receiving device 13 may be controlled based on the position of the ground guideline G. Accordingly, the RTG 10 automatically travels along the ground guideline G. In addition, the suspension device 16 is also driven by the electric power charged in the battery 15, and the container C is loaded or unloaded. Hereinafter, the power receiving device 13 constituting the RTG 10 will be described in detail.

The power receiving device 13 is connected to a power supply device (described later) constituting the power supply unit 20 and receives power supply. 3 and 4 are diagrams showing the configuration of the power receiving device 13, FIG. 3 is a schematic side view, and FIG. 4 is a schematic plan view. 3 and 4, the power receiving device 13 includes an upper guide rail pair 131, a slide restricting member 132, a lower guide rail pair 133, a second slide restricting member (not shown), and a current collecting carriage 134. And have.
The upper guide rail pair 131 protrudes from the side of the crane body 11 in the horizontal direction. That is, the upper guide rail pair 131 protrudes outward from one end in the width direction of the crane body 11 along the width direction.
The two slide restricting members 132 are bridged so as to connect the upper guide rail pair 131 to each other. The lower guide rail pair 133 is a side portion of the crane body 11 and protrudes in a horizontal direction from a position below the upper guide rail pair 131. That is, the lower guide rail pair 133 is disposed below the upper guide rail in the vertical direction, and protrudes from one end portion in the width direction of the crane body 11 toward the outside in the width direction.
Two second slide restricting members (not shown) are bridged so as to connect the lower guide rail pair 133 to each other.
The current collector carriage 134 is supported by an upper guide rail pair 131 and a lower guide rail pair 133 so as to be slidable inward and outward in the width direction of the RTG 10.

The current collecting carriage 134 holds various members necessary for receiving power supply from the power supply unit 20 shown in FIG. As shown in FIGS. 3 and 4, the current collecting carriage 134 includes a carriage body 1342, an upper guide roller pair 1343 and a lower guide roller pair 1344, a traveling roller 1345, an upper slider pair 1346 and a lower slider pair 1347. An upper current collecting unit 1348 and a lower current collecting unit 1349.
The carriage main body 1342 has an outer surface facing outward in the width direction of the RTG 10 and an inner surface facing inward in the width direction of the RTG 10. A total of four roller support pieces 1341 projecting outward in the width direction of the RTG 10 are provided on the outer surface of the carriage main body 1342.
The roller support pieces 1341 protrude from both ends of the carriage main body 1342 in the width direction (traveling direction of the RTG 10) at the uppermost part and the lowermost part of the carriage main body 1342. The roller support piece 1341 may protrude perpendicularly to the carriage main body 1342.
The upper guide roller pair 1343 and the lower guide roller pair 1344 are rotatably supported by each roller support piece 1341. The rotation axes of the upper guide roller pair 1343 and the lower guide roller pair 1344 may be parallel to the vertical direction.
The traveling roller 1345 is rotatably supported on the outer surface of the carriage main body 1342, that is, the surface on the side from which the roller support piece 1341 protrudes. That is, the traveling roller 1345 is provided on the outer surface of the carriage main body 1342 and protrudes toward the outer side in the width direction of the RTG 10. Further, the rotational axis of the traveling roller 1345 may be parallel to the width direction of the RTG 10.
The upper slider pair 1346 and the lower slider pair 1347 protrude from the outer surface and inner surface of the carriage main body 1342 toward the outer side and the inner side in the width direction of the RTG 10, respectively. The direction in which the upper slider pair 1346 and the lower slider pair 1347 protrude may be perpendicular to the outer surface and the inner surface of the carriage main body 1342.
The upper current collecting unit 1348 and the lower current collecting unit 1349 are supported on the outer surface of the carriage main body 1342 and protrude toward the outer side in the width direction of the crane main body 11. The direction in which the upper current collecting unit 1348 and the lower current collecting unit 1349 protrude may be perpendicular to the outer surface of the carriage main body 1342.

The upper guide roller pair 1343 and the lower guide roller pair 1344 position the current collecting carriage 134 in the width direction of the travel lane R. FIG. 5 is a schematic longitudinal sectional view showing a structure for attaching the upper guide roller pair 1343 to the roller support piece 1341. The upper guide roller pair 1343 has a cylindrical roller body 1343a. One end in the axial direction of the rotation support shaft 1343b is fixed to one end surface of the roller body 1343a. On the other hand, a shaft insertion hole 1341a is formed in the roller support piece 1341 protruding from the uppermost portion of the carriage main body 1342. A slide bearing 1341b is fitted in the shaft insertion hole 1341a. A bearing member 1341c is fixed to the roller support piece 1341. A shaft insertion hole 1341d is also formed in this bearing member 1341c, and a sliding bearing 1341e is fitted therein. The rotation support shaft 1343b of the upper guide roller pair 1343 is inserted into the shaft insertion hole 1341a of the roller support piece 1341 and the shaft insertion hole 1341d of the bearing member 1341c. Thereby, the rotation support shaft 1343b is supported by the

slide bearings

1341b and 1341e so as to be rotatable about the axis and slidable in the axial direction.

Slide restricting projections

1343c and 1343d for determining a sliding range in the axial direction of the rotation support shaft 1343b are provided to protrude in the radial direction at the front end and the intermediate portion in the axial direction of the rotation support shaft 1343b. A biasing spring 1350 is accommodated in the bearing member 1341c. One end of the biasing spring 1350 is fixed to the slide restricting projection 1343c, and the other end is fixed near the shaft insertion hole 1341d in the bearing member 1341c. In the upper guide roller pair 1343 attached to the roller support piece 1341, the gap 1351 having a predetermined width is formed between the roller main bodies 1343a as shown in FIG. Note that the mounting structure of the lower guide roller pair 1344 to the roller support piece 1341 is the same as that of the upper guide roller pair 1343, and therefore the description thereof is omitted here.

The traveling roller 1345 positions the current collecting carriage 134 in the vertical direction.
Similar to the upper guide roller pair 1343 shown in FIG. 5, the traveling roller 1345 has a cylindrical roller body 1343a. One end of the rotation support shaft 1343b in the axial direction is fixed to one end surface of the roller body 1343a. The rotation support shaft 1343b of the travel roller 1345 is supported by the carriage main body 1342 so as to be rotatable about the axis in a state where the rotation support shaft 1343b faces the protruding direction of the roller support piece 1341. The rotation support shaft 1343b of the traveling roller 1345 may be supported in parallel with the width direction or the horizontal direction of the crane body 11.

The upper slider pair 1346 and the lower slider pair 1347 slide the current collecting carriage 134 along the upper guide rail pair 131 and the lower guide rail pair 133 shown in FIG.
FIG. 6 is a schematic perspective view showing the periphery of the upper slider pair 1346 and the lower slider pair 1347 on the outer surface of the carriage main body 1342. A pair of left and right elongated holes 1342a are formed in the carriage main body 1342 constituting the current collecting carriage 134 at substantially the same interval as the upper guide rail pair 131 so as to extend in the vertical direction. The upper slider pair 1346 protrudes from the upper edge of each elongated hole 1342a toward both the inside and the outside in the width direction of the crane body 11. The direction in which the upper slider pair 1346 protrudes may be perpendicular to the carriage main body 1342. The cross-sectional shape of the upper slider pair 1346 is provided in a U shape (square U-shape or square bracket shape). The upper guide rail pair 131 is inserted into each elongated hole 1342a, and the upper slider pair 1346 is fitted to the upper guide rail pair 131 from above. Thereby, the upper slider pair 1346 is slidable along the upper guide rail. The two guide regulating members 132 are bridged over the upper guide rail pair 131 as described above. As a result, the current collector carriage 134 is slid along the upper guide rail pair 131 within a range until the carriage main body 1342 contacts the two slide restricting members 132, that is, between the two slide restricting members 132. Is allowed. With this configuration, the current collector carriage 134 slides in a predetermined range toward the inside and the outside in the width direction of the crane body 11. The direction in which the current collector carriage 134 slides may be the horizontal direction. Further, as shown in FIG. 6, the cart body 1342 is formed such that the lateral width of each elongated hole 1342 a is slightly larger than the lateral width of the upper guide rail pair 131, and the upper guide rail pair 131 is inserted into each elongated hole 1342 a. Accordingly, the cart body 1342 is allowed to be rattled in the longitudinal direction of the elongated hole 1342a and rattle in the width direction of the cart body 1342. Here, the longitudinal direction of the long hole 1342a may be the vertical direction, that is, the vertical direction. Further, the width direction of the carriage main body 1342 may be parallel to the traveling direction of the RTG 10 or the horizontal direction. Note that the configuration and function of the lower slider pair 1347 are the same as those of the upper slider pair 1346, and thus the description thereof is omitted here.

3 receives the power by connecting the upper current collecting unit 1348 and the lower current collecting unit 1349 to the power feeding unit 20 shown in FIG. Here, FIG. 7 is an operation explanatory diagram of the upper current collecting unit 1348. The upper current collector unit 1348 includes a current collector 1352 and a support mechanism 1353 that supports the current collector 1352 so as to move up and down. The support mechanism 1353 includes a column 1353a, an arm member 1353b, a pressing roller 1353c, and a biasing spring 1353d. The support column 1353 a is fixed to the cart body 1342 of the current collector cart 134. The arm member 1353b has a base end rotatably supported by the support column 1353a, and a current collector 1352 is fixed to the distal end. The pressing roller 1353c is pivotally supported at the intermediate portion in the longitudinal direction of the arm member 1353b. The biasing spring 1353d has one end fixed to the support column 1353a and the other end fixed to the arm member 1353b.

When the upper current collecting unit 1348 is away from an insulating trolley wire 292 (described later) constituting the power supply unit 20, the arm member 1353b receives a pulling force from the biasing spring 1353d. As a result, the current collector 1352 is lifted above the insulating trolley wire 292. When the upper current collecting unit 1348 approaches the insulating trolley wire 292 as the RTG 10 travels, the rod-like flipper 210 fixedly provided at a predetermined position of the power supply unit 20 comes into contact with the pressing roller 1353c. The flipper 210 has a shape inclined so as to descend in the traveling direction of the RTG 10. Therefore, the arm member 1353b rotates so as to lower the current collector 1352 by being guided by the inclination of the flipper 210 and the pressing roller 1353c being pushed down. Accordingly, the current collector 1352 is lowered to a position lower than the insulating trolley wire 292 and is inserted into the inside from one end side of the insulating trolley wire 292. Note that the configuration of the lower current collecting unit 1349 is the same as that of the upper current collecting unit 1348, and thus description thereof is omitted here.

As described above, the arm member 1353b supporting the current collector 1352 was biased by the biasing spring 1353d. Thereby, the impact when the current collector 1352 hits the flipper 210 can be reduced, and damage to the current collector 1352 can be prevented. Further, if the corners of the current collector 1352 are formed in a curved surface, the impact can be further reduced. Further, if the material of the flipper 210 is a low friction material, for example, Teflon (registered trademark), friction with the current collector 1352 can be reduced, and wear of the current collector 1352 can be prevented. Furthermore, as shown in FIG. 17, the shape of the flipper 210 may be a so-called relaxation curve, that is, a shape including a curve that gradually changes from a straight line to a curvature of a predetermined arc curve. In this case, the impact when the current collector 1352 contacts the flipper 210 can be reduced to prevent damage to the current collector 1352 and the like, and the length of the flipper 210 can be shortened. In this embodiment, the pressing roller 1353c is pushed down by the flipper 210 to lower the current collector 1352. Alternatively, the current collector 1352 can be pressed directly by the flipper 210 and pushed down. However, when the pressing roller 1353c is pressed as in this embodiment, it is possible to prevent the current collector 1352 formed using a material such as copper from being worn by sliding with the flipper 210.

In the RTG 10 configured as described above, the shape of the crane body 11, the number and position of the tire rows 12, the installation position of the electric chamber 14 and the battery 15, the configuration of the suspension device 16, etc. are limited to the present embodiment. The design can be changed as appropriate. Further, in the present embodiment, the RTG 10 is traveled only along one traveling lane R, but the RTG 10 may be moved to the adjacent traveling lane R.

The power supply unit 20 supplies power to the RTG 10. As shown in FIG. 1, the power supply unit 20 includes a plurality of external power sources 21, a supply wiring path 22, and a power supply device 23. The plurality of external power supplies 21 are installed in a direction crossing the travel lane R along one end of the travel lane R in the travel direction of the RTG 10. One end of the supply wiring path 22 is connected to the external power source 21 and extends in parallel with the travel lane R. The power feeding device 23 is provided at a predetermined position of the supply wiring path 22.

In addition, the number and installation positions of the external power sources 21 are not limited to the present embodiment, and can be appropriately changed in design. In the present embodiment, as shown in FIG. 1, a separate external power supply 21 is installed for each traveling lane R. However, a plurality of traveling lanes R may share the external power supply 21. In addition, the number of the supply wiring paths 22 and the installation position can be appropriately changed. For example, in the present embodiment, the supply wiring path 22 is embedded in the ground (indicated by a dotted line in FIG. 1), but instead, the supply wiring path 22 may be laid on the road surface. Further, the number and installation positions of the power feeding devices 23 can be changed as appropriate.

The power feeding device 23 is connected to the power receiving device 13 of the RTG 10. FIG. 8 is a schematic perspective view of the power feeding device 23 viewed from the center of the traveling lane R toward the outside. The power feeding device 23 includes a power feeding device main body 25, a pair of roller guide plates (width direction guide plates) 26, a positioning plate 27, a travel roller base 28 (vertical direction guide plates), an upper trolley wire unit 29, and a lower portion. A trolley wire unit 30.
The power feeding device body 25 is a plate-like member provided along the traveling direction and the vertical direction of the RTG 10. The power feeding device main body 25 has an inner surface that faces the inner side in the width direction of the travel lane R and an outer surface that faces the outer side. Horizontal pieces 24 project from the uppermost part and the lowermost part of the inner surface of the power supply device body 25, respectively. The horizontal piece 24 may protrude horizontally toward the inner side in the width direction of the travel lane R, or may be provided perpendicular to the power supply apparatus main body 25. The upper and lower horizontal pieces 24 have inner surfaces facing each other.
The pair of roller guide plates 26 are provided so as to protrude from the inner side surfaces of the upper and lower horizontal pieces 24. The pair of roller guide plates 26 face each other in the width direction of the travel lane R. The pair of roller guide plates 26 may be provided so as to protrude in the vertical direction.
The positioning plate 27 is provided so as to protrude from the inner surface of the horizontal piece 24 between the pair of roller guide plates 26. The positioning plate 27 may be provided so as to protrude in the vertical direction.
The traveling roller mount 28 is provided so as to protrude laterally from the upper portion of the power supply device body 25. That is, the traveling roller mount 28 protrudes from the inner surface of the power supply device body 25 toward the inner side in the width direction of the traveling lane R.
The upper trolley wire unit 29 and the lower trolley wire unit 30 are provided at a position below the traveling roller mount 28 in the power feeding device body 25.

The pair of roller guide plates 26 guides the upper guide roller pair 1343 and the lower guide roller pair 1344 shown in FIG. 3 in a predetermined direction. For example, the pair of roller guide plates 26 guides the upper guide roller pair 1343 and the lower guide roller pair 1344 in the traveling direction of the RTG 10. As shown in FIG. 8, each roller guide plate 26 is an elongated plate-like member that is bent at an intermediate portion in the longitudinal direction. Such two roller guide plates 26 are fixed in a standing state on the inner side surfaces of the upper and lower horizontal pieces 24 and face each other at a predetermined interval. Each roller guide plate 26 extends from one end portion in the width direction of the power supply device body 25 to reach the center portion in the width direction of the power supply device body 25. Here, the width direction of the power supply apparatus main body 25 may be parallel to the traveling direction of the RTG 10. Further, the interval between the two roller guide plates 26 gradually decreases from one end portion in the width direction of the power supply device body 25 toward the center portion in the width direction, and thereafter becomes a constant interval. As a result, the two roller guide plates 26 are substantially Y-shaped in plan view. As shown in FIG. 18, the shape of the portion where the distance between the two roller guide plates 26 gradually narrows may be a so-called relaxation curve. In this case, the impact force when the upper guide roller pair 1343 and the lower guide roller pair 1344 come into contact with the roller guide plate 26 can be reduced.

The positioning plate 27 is sandwiched between an upper guide roller pair 1343 and a lower guide roller pair 1344 shown in FIG. As shown in FIG. 8, the positioning plate 27 is an elongated flat plate-like member, and its length is slightly shorter than the lateral width of the power feeding device body 25. The thickness of the positioning plate 27 is approximately the same as the width of the gap 1351 formed between the upper guide roller pair 1343 shown in FIG. The positioning plate 27 is fixed in a standing state at a position between the roller guide plates 26 facing each other on the inner side surfaces of the upper and lower horizontal pieces 24. The positioning plate 27 extends from the region where the distance between the two roller guide plates 26 in the vicinity of the central portion in the width direction of the power feeding device main body 25 to the end in the width direction of the power feeding device main body 25. It extends. The positioning plate 27 may be made of a low friction material such as Teflon (registered trademark). In this case, friction between the upper guide roller pair 1343 and the lower guide roller pair 1344 can be reduced, and wear of the upper guide roller pair 1343 and the lower guide roller pair 1344 can be prevented. Further, if lubricating oil is applied between the positioning plate 27 and the upper guide roller pair 1343 and the lower guide roller pair 1344, the wear of the upper guide roller pair 1343 and the lower guide roller pair 1344 can be further prevented.

The traveling roller mount 28 serves as a traveling road surface of the traveling roller 1345 shown in FIG. As shown in FIG. 8, the traveling roller mount 28 is an elongated flat plate-like member, and is provided with an inclined portion 28b inclined obliquely at one end of the parallel portion 28a. The parallel part 28a is provided longer than the inclined part 28b. The traveling roller mount 28 protrudes in the horizontal direction by being fixed in an upright state on the inner surface of the power supply device body 25, that is, the upper portion of the surface on which the horizontal piece 24 protrudes. The travel roller mount 28 extends from the central portion of the power feeding device body 25 in the width direction to one end portion in the width direction. As shown in FIG. 19, if the shape of the inclined portion 28b of the traveling roller mount 28 is a so-called relaxation curve, the impact force when the traveling roller 1345 contacts the inclined portion 28b can be reduced.

The upper trolley wire unit 29 and the lower trolley wire unit 30 serve as connection terminals to which the current collector 1352 shown in FIG. 7 is connected. As shown in FIG. 8, the upper trolley wire unit 29 includes a plate-like mounting bracket 291 fixed to the inner surface of the power supply device body 25 and two insulating trolleys attached to the lower surface of the mounting bracket 291. A line (feed line) 292. Note that the current collecting carriage 134 is provided at a position corresponding to the insulated trolley wire 292 in the RTG 10, that is, on the side near the trolley wire 292 of the RTG 10. The insulated trolley wire 292 is disposed on the side of the traveling lane R along the traveling lane R. When the power receiving device 13 and the power feeding device 23 move relatively in the traveling direction of the RTG 10, the traveling roller 1345 shown in FIG. 3 rides on the upper surface of the traveling roller mount 28 from the inclined portion 28b shown in FIG. The upper surface of 28b is moved. The mounting bracket 291 is positioned so that the insulated trolley wire 292 shown in FIG. 8 corresponds to the upper current collecting unit 1348 shown in FIG. It is being fixed to the electric power feeder main body 25 so that it may be located in.
The lower trolley wire unit 30 also includes a mounting bracket 301 and two insulated trolley wires 302, as with the upper trolley wire unit 29, but the configuration and function are the same as those of the upper trolley wire unit 29. The description is omitted.

FIG. 9 is a schematic perspective view showing the insulated trolley wire 292. The insulated trolley wire 292 has a conducting wire (conductor) 2921 that functions as an energizing portion, and an insulating cover 2922 that covers the conducting wire 2921. The conductive wire 2921 is formed of a material having electrical conductivity and low electrical resistance, such as iron, copper, or aluminum. The conductor 2921 is more preferable if it has high corrosion resistance against rain or the like. As shown in FIG. 9, the conducting wire 2921 has a groove 2921a into which the current collector 1352 shown in FIG. The conductive wire 2921 has a convex portion 2921 b that engages with the insulating cover 2922. The conducting wire 2921 configured in this way is electrically connected to the supply wiring path 22 shown in FIG.

The insulating cover 2922 prevents a person working in the container yard Y from coming into contact with the conductor 2921 and receiving an electric shock. The insulating cover 2922 is a hollow case made of an electrically insulating material such as resin or ceramics. As shown in FIG. 9, the insulating cover 2922 has a cross section orthogonal to the longitudinal direction, and a recess 2922a is formed in the upper part thereof. In addition, an opening 2922 b is formed in the lower portion of the insulating cover 2922. The insulating cover 2922 configured as described above has a conductive wire 2921 fitted therein, and a convex portion 2921b of the conductive wire 2921 is engaged and locked with a concave portion 2922a of the insulating cover 2922. As a result, the conductive wire 2921 is exposed to the outside through the opening 2922b of the insulating cover 2922. Further, the conductor 2921 is held inside the insulating cover 2922 without dropping from the opening 2922b by the engagement of the convex portion 2921b and the concave portion 2922a.

Next, operations and effects of the RTG 10 according to the first embodiment of the present invention will be described. First, positioning of the RTG 10 in the width direction of the travel lane R will be described with reference to FIGS. 10 to 12. As described above, when the traveling along the traveling lane R is realized by the automatic operation, a slight meandering occurs in the width direction of the traveling lane due to the deviation of the distance and the angle generated during the automatic operation. Therefore, without being affected by the meandering, the current collector 1352 that is one of the members constituting the power receiving device 13 is reliably brought into contact with the insulated trolley wire 292 that is one of the members constituting the power feeding device 23, These need to be electrically connected. Therefore, in the RTG 10 according to the present invention, the RTG 10 is positioned in the width direction of the traveling lane R before the current collector 1352 is connected to the insulated trolley wire 292. In the following description, only the positioning operation of the upper guide roller pair 1343 will be described, but the same positioning operation as that of the upper guide roller pair 1343 is performed for the lower guide roller pair 1344.

When meandering occurs in the RTG 10 traveling along the traveling lane R, a slight shift in the width direction of the traveling lane R occurs in the trajectory through which the RTG 10 passes. In FIG. 10A, the width direction of the traveling lane R is a direction orthogonal to the direction in which the positioning plate 27 extends. FIG. 10A shows a trajectory through which the upper guide roller pair 1343 of the current collector carriage 134 is to pass when the meandering of the RTG 10 occurs. In addition, in the case where there is no meandering, the trajectory that the RTG 10 should originally pass is indicated by a one-dot chain line in the figure. As described above, when meandering occurs in the RTG 10, the trajectory (dotted line) through which the upper guide roller pair 1343 of the current collector carriage 134 is to pass is compared with the trajectory (one-dot chain line) that should be passed through. There is a slight shift in the direction perpendicular to the direction.

In this case, the upper guide roller pair 1343 positioned forward in the traveling direction of the RTG 10 has a roller guide plate in a region where the interval between the two roller guide plates 26 gradually increases as shown in FIG. 26 is contacted. Then, the upper guide roller pair 1343 starts to move along the roller guide plate 26. Here, as described above, the carriage main body 1342 which is one of the members constituting the current collecting carriage 134 shown in FIG. 6 is allowed to rattle in the width direction of the long hole 1342a. The width direction of the long hole 1342a may be parallel to the traveling direction of the RTG 10, that is, the positioning plate 27. In this case, when the upper guide roller pair 1343 starts to move along the roller guide plate 26, the carriage main body as shown in FIG. 1342 has a slight inclination.

The RTG 10 travels further forward from the state shown in FIG. Then, as shown in FIG. 11 (a), the upper guide roller pair 1343 located in front of the traveling direction of the RTG 10 is in contact with the roller guide plate 26, and the distance between the two roller guide plates 26 is constant. Enter an area. A gap 1351 is formed between the upper guide roller pair 1343 located in front of the traveling direction. When the positioning plate 27 enters the gap 1351, the upper guide roller pair 1343 is in a state where the positioning plate 27 is sandwiched between the roller main bodies 1343a.

RTG 10 travels further forward from the state of FIG. Then, as shown in FIG. 11 (b), the upper guide roller pair 1343 positioned rearward in the traveling direction of the RTG 10 contacts the roller guide plate 26 in a region where the distance between the two roller guide plates 26 gradually increases. To do. Then, the upper guide roller pair 1343 also starts to move along the roller guide plate 26. As the upper guide roller pair 1343 moves along the roller guide plate 26 forward in the traveling direction of the RTG 10, the inclination of the carriage main body 1342 with respect to the traveling direction gradually decreases.

The RTG 10 travels further forward from the state shown in FIG. Then, the upper guide roller pair 1343 located behind the RTG 10 in the traveling direction also enters the region where the distance between the two roller guide plates 26 is constant while being in contact with the roller guide plate 26. At this time, the carriage main body 1342 may be in a state parallel to the traveling direction of the RTG 10. As shown in FIG. 11C, a gap 1351 is also formed between the roller main bodies 1343a in the upper guide roller pair 1343 located behind the RTG 10 in the traveling direction. When the positioning plate 27 enters the gap 1351, the upper guide roller pair 1343 is in a state where the positioning plate 27 is sandwiched between the roller main bodies 1343a. As a result, the trajectory through which the upper guide roller pair 1343 passes coincides with the trajectory that should pass through. Thus, the positioning of the current collector carriage 134 in the width direction of the travel lane R is completed.

The RTG 10 travels further forward from the state shown in FIG. Then, as illustrated in FIG. 12A, the current collector 1352 positioned in front of the traveling direction of the RTG 10 is inserted into the insulating trolley wire 292 from one end side in the longitudinal direction. The current collector 1352 is one of the members constituting the upper current collector unit 1348. Thereafter, as shown in FIG. 12B, the current collector 1352 located behind the RTG 10 in the traveling direction is also inserted into the insulated trolley wire 292. When the entire upper current collecting unit 1348 is inserted into the insulated trolley wire 292, the RTG 10 stops traveling. In this state, power supply from the power supply unit 20 to the RTG 10 is started. Note that the collector cart 134 is positioned in the vertical direction from the state shown in FIG. 11C to the state shown in FIG.

Next, positioning of the RTG 10 in the vertical direction will be described with reference to FIGS. As described above, the RTG 10 means the tire crane 10 and travels in the tire row 12. Therefore, when the tire row 12 is deformed by the weight of the crane body 11 or the like, the RTG 10 may be slightly depressed in the vertical direction (vertical direction). Therefore, it is necessary to reliably connect the current collector 1352 constituting the power receiving device 13 to the insulated trolley wire 292 constituting the power feeding device 23 without being affected by the sinking. Therefore, in the RTG 10 according to the present embodiment, the positioning of the travel lane R in the width direction is started behind (upstream) in the travel direction of the RTG 10 from the position where the vertical positioning is performed. In contrast to the present embodiment, the vertical positioning may be started behind the RTG 10 in the traveling direction from the position where the traveling lane R is positioned in the width direction. Further, the positioning in the width direction and the positioning in the vertical direction of the traveling lane R may be performed simultaneously.

When sinking occurs in the RTG 10 traveling along the traveling lane R, a slight shift in the vertical direction occurs in the trajectory through which the RTG 10 passes. FIG. 13A shows a trajectory through which the traveling roller 1345 of the current collector carriage 134 is to pass by a dotted line. In addition, the trajectory that should normally pass when there is no subduction is shown by a one-dot chain line in the figure. In this way, when the RTG 10 sinks, the trajectory (dotted line) that the traveling roller 1345 of the current collector carriage 134 tries to pass is slightly lower in the downward direction than the trajectory (one-dot chain line) that should originally pass. Deviation occurs. In this state, the current collecting carriage 134 is supported from below by an upper guide rail pair 131 that contacts the upper slider pair 1346 from below and a lower guide rail pair 133 that contacts the lower slider pair 1347 from below. .

In this case, the traveling roller 1345 located in front of the traveling direction of the RTG 10 contacts the inclined portion 28b of the traveling roller mount 28, and starts moving along the inclined portion 28b. Here, as described above, the carriage main body 1342 constituting the current collector carriage 134 shown in FIG. 6 is allowed to rattle in the longitudinal direction of the elongated hole 1342a. Therefore, when the traveling roller 1345 starts to move along the traveling roller mount 28, the traveling roller 1345 receives a force from the traveling roller mount 28. With this force, as shown in FIG. 13B, the carriage main body 1342 is lifted and tilted forward in the traveling direction. On the other hand, the upper guide rail pair 131, the lower guide rail pair 133, and the slide restricting member 132 extending from the crane body 11 of the RTG 10 are maintained in a horizontal state. The upper slider pair 1346 is one of the members constituting the current collector carriage 134. Accordingly, as shown in FIG. 13B, in the state where the carriage main body 1342 is tilted, the upper slider pair 1346 located at the rear in the traveling direction of the RTG 10 maintains the state of being in contact with the upper guide rail pair 131. The upper slider pair 1346 located forward in the direction is separated from the upper guide rail pair 131. As a result, the current collector carriage 134 is supported by the traveling roller pedestal 28 at a portion located in front of the traveling direction of the RTG 10. On the other hand, the current collector carriage 134 is in a state in which the portion located rearward in the traveling direction of the RTG 10 is supported by the upper guide rail pair 131 and the lower guide rail pair 133.

Here, FIG. 16 is a diagram for explaining the operation of the carriage main body 1342 and the upper guide roller pair 1343 when the collector carriage 134 is positioned in the vertical direction. As shown in FIG. 13 (b), when the front portion of the carriage main body 1342 in the traveling direction is lifted and inclined, the roller support piece 1341 provided on the carriage main body 1342 is positioned at a position indicated by a two-dot chain line in FIG. To the position indicated by the solid line. Here, as described above, the rotation support shaft 1343b of the upper guide roller pair 1343 is supported by the slide bearing 1341b and the slide bearing 1341e so as to be slidable in the axial direction. Therefore, even if the roller support piece 1341 is raised, the sliding bearing 1341b and the sliding bearing 1341e move along the rotation support shaft 1343b, and the upper guide roller pair 1343 does not move in the vertical direction. When the collector cart 134 is positioned in the vertical direction, the upper guide roller pair 1343 is in contact with the roller guide plate 26 and the positioning plate 27. Even in this state, since the upper guide roller pair 1343 does not move in the vertical direction, the upper guide roller pair 1343 may slide and wear against the roller guide plate 26 and the positioning plate 27 when the roller support piece 1341 is raised. Absent.

The RTG 10 further travels from the state shown in FIG. Then, as shown in FIG. 14A, the traveling roller 1345 located in the front in the traveling direction of the RTG 10 rides from the inclined portion 28b of the traveling roller mount 28 to the parallel portion 28a. On the other hand, the traveling roller 1345 located rearward in the traveling direction of the RTG 10 also contacts the inclined portion 28b and starts moving along the inclined portion 28b. Along with this, the rear body of the carriage main body 1342 gradually rises in the traveling direction of the RTG 10. As a result, the upper end and the lower end of the carriage main body 1342 are parallel (horizontal) to the road surface of the travel lane R. And the upper slider pair 1346 which comprises the current collector cart 134 will be in the following state. That is, as shown in FIG. 14B, both the upper slider pair 1346 located in the front and the upper slider pair 1346 located in the rear in the traveling direction of the RTG 10 are separated from the upper guide rail pair 131. As a result, the current collecting carriage 134 is in a state in which both the upper slider pair 1346 located in the front in the traveling direction of the RTG 10 and the upper slider pair 1346 located in the rear are supported by the traveling roller mount 28.

Further, the traveling roller 1345 located rearward in the traveling direction of the RTG 10 also rides from the inclined portion 28b of the traveling roller mount 28 to the parallel portion 28a. Then, the trajectory through which the traveling roller 1345 passes coincides with the trajectory that should pass through, and positioning of the current collector carriage 134 in the vertical direction is completed. Thereafter, when the RTG 10 further travels, the current collector 1352 constituting the upper current collector unit 1348 is inserted from one end in the longitudinal direction of the insulated trolley wire 292 as shown in FIG. At this time, the RTG 10 stops traveling and starts supplying power from the power supply unit 20.

The various shapes, combinations, operation procedures, and the like of the constituent members shown in the above-described embodiments are merely examples, and various changes can be made based on design requirements and the like without departing from the gist of the present invention.
For example, in the above-mentioned embodiment, the crane system provided with the tire type crane apparatus was demonstrated. However, this invention is not limited to a crane system, For example, it can apply to the electric power feeding system with respect to the self-propelled apparatus containing a tire type crane apparatus. That is, a power feeding system including the above-described insulating trolley wire 292, current collecting cart 134, current collecting 1352, and a support mechanism (support 1353a, arm member 1353b, pressing roller 1353c, biasing spring 1353d) is self-propelled except for a tire crane. It may be provided in the expression device. According to this power supply device, even in a self-propelled device other than a tire-type crane, it is possible to cancel the position shift of the device when power is supplied to the device.

As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to said embodiment. Additions, omissions, substitutions, and other modifications can be made without departing from the spirit of the present invention. The present invention is not limited by the above description, but only by the scope of the appended claims.

A crane system with the following configuration. Tire type crane. A feeder line that is disposed along a travel route of the tire crane and has a conductor exposed on one surface. A current-collecting cart provided in the tire-type crane and provided at a position corresponding to the feeder line so as to be movable in the width direction of the travel route. A current collector provided to be electrically connectable to the feeder line. A support mechanism that is provided on the current collector carriage and supports the current collector so as to be movable in a direction close to or away from one surface of the feeder line.

DESCRIPTION OF SYMBOLS 1 ... Crane system 10 ... Tire type crane 26 ... Roller guide plate (width direction guide plate)
28 ... Travel roller stand (up and down direction guide plate)
131 ... Upper guide rail pair (rail)
134 ...

collector cart

1353a, 1353b, 1353c, 1353d ... support mechanism 1352c ... collector 292 ... insulated trolley wire (feeding wire)
2921 ... Conductor (conductor)
R: Driving lane (traveling route)

Claims

Tire-type crane,
A feeder line disposed along the travel path of the tire-type crane, with a conductor exposed on one surface,
A collector cart provided in the tire crane and provided at a position corresponding to the power supply line so as to be movable in the width direction of the travel route;
A current collector provided so as to be electrically connectable to the feeder line;
A support mechanism that is provided on the current collector carriage and supports the current collector so as to be movable in a direction close to or away from one surface of the feeder line;
Crane system with
The crane system according to claim 1, wherein a conductor is exposed on a lower surface of the feeder line.
The crane system according to claim 1 or 2, wherein the current collecting cart is supported by a rail extending to a side of the tire crane along a width direction of the travel route.
The crane system according to claim 3, wherein the current collecting cart is supported by the rail so as to be movable up and down and horizontally.
A vertical guide plate is provided along the power supply line to contact a part of the current collector carriage to guide the current collector truck in the vertical direction, and to contact a part of the current collector truck to the current collector truck. The crane system according to claim 4, wherein a width direction guide plate that guides the vehicle in a width direction of the travel route is provided along the power supply line.
6. The crane system according to claim 5, wherein the width direction guide plate starts guiding the current collecting cart along the traveling direction of the tire crane at a position behind the vertical direction guide plate in the traveling direction.
A power supply system for a self-propelled device,
A feeder line that is disposed along the traveling path of the self-propelled device, with a conductor exposed on one surface, and
A current collector truck provided in the self-propelled device and provided at a position corresponding to the feeder line so as to be movable in the width direction of the travel route;
A current collector provided to be electrically connectable to the feeder line;
A support mechanism that is provided on the current collector carriage and supports the current collector so as to be movable in a direction close to or away from one surface of the feeder line;
Is provided.