JPS6234941Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for switching travel lanes of a rail-mounted crane.

[Conventional technology]

Conventionally, in container yards where rail-mounted transfer cranes are installed, multiple crane running rails are laid in parallel. One or two cranes are placed in each lane to transport containers within each lane.

[Problem that the invention aims to solve] However, in conventional container yards, even if there is an imbalance in the workload between lanes, multiple cranes cannot always be used efficiently because there is no equipment for moving cranes. The problem was that I couldn't do it.

The present invention focuses on the above-mentioned conventional problems and provides a crane travel lane switching device that can easily switch and move the crane according to the workload of each lane and average the workload of each lane. The purpose is to

[Means for solving problems]

In order to achieve the above object, the crane travel lane switching device according to the present invention is provided with a cross rail that is orthogonal to each travel lane formed by arranging a plurality of crane travel rails in parallel, and the cross rail and the crane travel rail A swing switching rail is installed at the intersection of
A bogie formed by connecting a bogie main body formed into a rectangular flat plate shape with a frame and a moving frame along the direction in which the running rails are disposed via an expansion/contraction mechanism is arranged so as to be able to run on the transverse rail, and the total length of the bogie is Set to a value that is smaller than the crane's leg span when the telescoping mechanism is retracted, and that matches the crane's leg span when the telescoping mechanism is extended, and the four corners of the top surface of the trolley are set to a value that sinks into the lower part of the main equalizer of the crane when the telescoping mechanism is extended. The present invention is characterized in that it is provided with a jacking means for driving the crane up and down in accordance with the driving force.

[Effect]

After driving the trolley on the cross rail to the intersection with the lane where the crane you want to move exists, move the crane to a position directly above the trolley. Thereafter, the cart is extended and moved so that the end of the cart goes under the lower surface of the crane leg, and the crane is lifted by the jack up means and moved to the required lane. What is necessary is to stop the crane on the required lane, lower the crane using the jack up means, and then retract the truck and move the crane onto the required lane.

With this arrangement, if a peak in workload occurs in a certain lane, cranes on other lanes with a lower workload can be moved to that lane to concentrate container transfer. be.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The crane travel lane switching device according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a plan view showing a container yard equipped with a travel lane switching device according to this embodiment.

In this container yard, four rows of travel lanes A to D each consisting of a pair of travel rails are laid in parallel. Eight cranes 1 to 8 are arranged on travel lanes A to D, and two cranes are arranged in each lane A to D.

A cross rail 10 is laid at approximately the center of the lane length of each of the lanes A to D arranged in parallel in this way, and which crosses each of the lanes A to D at right angles.
This cross rail 10 is a rail 1 for each lane A to D.
As shown in FIG. 2, a swing switching rail 12 is provided at the intersection. The turning switching rail 12 is capable of turning around the intersection of the traveling rail 11 and the crossing rail 10, and is used to switch and connect either the traveling rail 11 or the crossing rail 10 so that the traveling object can travel.

A truck 13 for transporting the cranes 1 to 8 is movably arranged on the crossing rail 10. The specific structure of this truck 13 is shown in FIGS. 3 to 5. The bogie 13 has a bogie main body 17 formed into a rectangular flat plate by framing a vertical frame 14 parallel to the transverse rail 10, a horizontal frame 15 orthogonal to the horizontal frame 15, and an oblique frame 16 arranged diagonally. There is. Further, a moving frame 19 is connected to the front end of the truck body 17 via a telescoping mechanism 18, so that the entire length of the truck 13 can be expanded and contracted. The telescopic mechanism 18 has two links 20A and 20B pivotally attached to the front horizontal frame 15 of the truck body 17.
0A and 20B are also pivotally connected to the movable frame 19. The pivoting end of one link 20B on the side of the truck body 17 is fitted into a groove provided along the longitudinal direction of the horizontal frame 15 (width direction of the truck 13), and is connected to a hydraulic cylinder (not shown). The expansion and contraction of the cylinder causes it to reciprocate along the groove. When the pivoting end of the link 20B on the frame 15 side is at the position closest to the pivoting end of the link 20A on the frame 15 side due to the reciprocating movement, the links 20A and 20B are formed as shown by the solid line in FIG. The apex of the triangle, that is, the frame 19 of the links 20A and 20B
The side pivot point is located closest to the link 20A side of the groove provided in the frame 19, and
The gap between 5 and 19 is the widest. The frame 15 side pivoting end of the link 20B is connected to the link 2 along the groove.
When moving to the farthest position from the pivot end on the frame 15 side of 0A, as shown by the two-dot chain line in FIG.
The pivot points of the links 20A and 20B on the frame 19 side move along the groove of the frame 19 to the farthest position from the link 20A, and the distance between the frames 15 and 19 becomes the narrowest. Thus frames 15 and 1
9 approaches or moves away, expanding and contracting the entire length of the truck. In addition, links 20A and 20B
A pair of telescopic mechanisms 18 are provided on both sides of the cart 13 in the width direction, each of which includes guide grooves of the frames 15 and 19, and a hydraulic cylinder for moving the pivot end of the link 20B. The maximum length of the trolley 13 accompanying this expansion and contraction operation is set to match the leg spans of the cranes 1 to 8, and the minimum length is set smaller than the leg spans. Here, the length corresponding to the leg span refers to the state of the truck shown in FIG. 6B. In other words, the center of the hydraulic jacks 21 arranged at four intervals of the truck is in a state where it matches the leg span of the crane 1, that is, the distance between the center of the legs on both sides, and in this state, the truck 13 jacks up the crane 1. becomes possible. Also, the expression "setting smaller than the leg span" refers to the state of the truck 13 shown in FIGS. 6A and 6C. In this state, the total length of the truck 13 is smaller than the leg span of the crane 1, and there is a sufficient gap between the crane legs and the truck 13 that will not cause any obstruction when the crane 1 travels in a direction perpendicular to the plane of the paper. is formed between. Furthermore, hydraulic jacks 21 are arranged at the four corners of the extendable trolley 13, that is, on both sides of the rear end of the trolley body 17 and on both sides of the moving frame 19, and when the trolley 13 is extended, the cranes 1 are positioned at the lower surface of the cranes 1 to 8. ~8 legs can be lifted. The trolley 13 is equipped with wheels 22 that make contact with the cross rail 10 so that it can travel, and the moving frame 19 is equipped with a motor drive device 23 for driving the wheels and an engine generator 24. It has become possible for it to move on its own. The engine generator 24 performs various operations, and the trolley body 17 is connected to the power supply cable 2.
5 to operate the hydraulic unit, etc.

Note that 26 in FIG. 1 is a standby rail for the truck 13.

A case will be described in which the crane 1 on the A lane is moved to the B lane using such a crane travel lane switching device. First, cross rail 10
At the rail intersections between lanes A to D, the turning switching rail 12 is turned to divide the running rail 11 and the cross rail 10 is switched so that the bogie 13 can run. Then, the trolley 13 is moved and positioned at the center of the intersection with the A lane. At this time, the trolley 13 is in a contracted state. , align the swing switching rail 12 in the direction of the running rail 11, run the crane 1, stop it directly above the trolley 13 as shown in FIG. 6A, and disconnect the power supply cable from the primary side at its power supply point connection, Manual winding onto the cable drum.

Next, the turning switching rail 12 is changed to the crossing rail 10.
direction, and as shown in FIG. 6B, the truck 13 is extended and the jack 21 is inserted under the main equalizer (not shown) of the crane 1. That is, the hydraulic jacks 21 provided at four intervals of the truck 13 are lowered to the lowest stroke end,
The trolley 13 is extended and stopped at the position where the center of jacking is directly below the main equalizer. In this state, by raising the hydraulic jack 21 to the top of the stroke, the entire crane 1 is lifted up via the main equalizer, the traveling wheels of the crane 1 are released from the traveling rail 11, and the crane 1 can no longer be transported by the trolley 13. It becomes possible. In addition, the truck 1 should be placed so that the jack up point is on the center of the main equalizer of the crane 1, that is, on the center of the traveling rail 11.
3 is provided with a stopper, and this is attached to crane 1.
Align the position by placing it on the sill beam. after that,
Lift the crane 1 with the jack 21, run the trolley 13 in the fully raised state, and move the crane 1 to B.
move to lane.

After moving to the B lane, positioning is completed and the turning switching rail 12 is aligned with the traveling rail 11 direction.
Then, the hydraulic pressure of the jack 21 is released and the crane 1 is gently lowered onto the traveling rail 11. Crane 1
When the crane is completely lowered, retract the trolley 13 and pull out its end from the lower surface of the leg of the crane 1, as shown in FIG. 6C. After that, connect the power supply to the crane, and
3 Move from above. Then, the turning switching rail 12 is directed toward the cross rail 10 again.

After completing the movement of crane 1 to B lane,
The trolley 13 is run on the cross rail 10 in a contracted state (FIG. 6D), and after moving the trolley 13 to the standby rail 26 position, all the turning switching rails 12
is directed toward the running rail 11.

[Effect of idea]

As described above, according to the crane lane switching device according to the present invention, since the cranes on each lane A to D can be switched and transferred to other lanes, the peak when the workload in each lane is uneven can be dispersed, This has the effect of increasing the efficiency of crane usage. Further, according to the present invention, unlike a system in which each crane is provided with a device for switching to another lane, the structure of the crane is simplified and the number of parts is reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a container yard including a lane switching device according to the present embodiment, FIG. 2 is a plan view of the intersection of a cross rail and a running rail, and FIG. 3 is a side view of a bogie.
Fig. 4 is a plan view of the same, Fig. 5 is a plan view of the telescopic mechanism,
6A to 6D are crane transfer process diagrams. 1-8...Crane, 10...Cross rail, 1
2...Turning switching rail, 13...Dolly, 18...
Telescopic mechanism, 21...hydraulic jack.

Claims (1)

[Scope of utility model registration request] A trolley formed into a rectangular flat plate shape by a frame, provided with a cross rail orthogonal to each travel lane made by arranging a plurality of crane travel rails in parallel, and provided with a turning switching rail at the intersection of the cross rail and the crane travel rail. A trolley formed by connecting the main body and a moving frame along the installation direction of the traveling rail via a telescoping mechanism is arranged so as to be able to run on the cross rail, and the entire length of the trolley is extended from the leg span of the crane when the telescoping mechanism is retracted. is set to a value that is small and matches the leg span of the crane when the telescoping mechanism is extended, and the four corners of the top surface of the dolly are designed to fit under the main equalizer of the crane when the telescoping mechanism is extended, and to raise and lower the crane according to the driving force. A traveling lane switching device for a crane, characterized in that it is provided with a driving jack up means.