JPH10114488A - Cargo handling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform positioning in the traveling direction by means of a simple structure by arranging position regulating means, by which both conveyed objects are moved in the same direction toward both extension passive parts, between the extension passive parts and conveyed object supporting parts in both extensible beams. SOLUTION: When a switching valve 47 is set in a neutral condition while both cylinder devices 40A, 40B are set in a locked condition, a driving motor 34 for an extension driving device 30 is driven normally/reversely, so that extension passive parts 26A, 26B are moved normally/reversely via sprockets 31, 32, a chain 33 and the like. The normal/reverse shift of the extension passive parts 26A, 26B extends/shrinks extensible beams 23A, 23B via both cylinder devices 40A, 40B, and a pitch between connecting apparatuses 27A, 27B is adjusted to the length of a container. If traveling directional positioning stop precision is not good, the switching valve 47 is switched to the left/right, and conveyed object supporting members 24A, 24b are extended/shrunk to the fixed extension passive parts 26A, 26B via the cylinder devices 40A, 40B, and as a result, connecting apparatuses 27A, 27B are positioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane-type cargo handling apparatus used for, for example, loading and unloading and transporting marine containers.

[0002]

2. Description of the Related Art Conventionally, as a cargo handling device of this type, for example, a configuration shown in FIGS. 4 to 6 has been provided. That is, the traveling body 1 in the form of a rectangular frame comprises a pair of front and rear sill beams 2 arranged in parallel (a pair in the longitudinal direction), and a column 3 erected from each end of both sill beams 2. It is composed of a pair of left and right girder 4 (a pair in the short direction) provided between the upper ends of the opposed columns 3.

A bogie 6 having tires 5 is provided on the lower surface of each end of both sill beams 2, and a traveling motor 7 provided on the two bogies 6 is driven forward and reverse. The traveling main body 1 is configured to be capable of right traveling A and left traveling B when traveling straight in the short direction.
Each of the sill beams 2 is provided with a hydraulic unit 8, and an engine room 9 and an electric control room 10 are provided in a state of being distributed to the sill beams 2.

The traveling body 1 is guided and supported by the two girder 4.
A club 11 is provided which is movable in a direction perpendicular to the traveling direction of the vehicle, that is, in a forward C direction and a reverse D direction. The club
A spreader device 20 is arranged below the 11 via four (a plurality of) suspension devices 15 so as to be able to move up and down. Each of the suspension devices 15 includes a loop (sliding body) 17 disposed on the fixed beam 21 side of the spreader device 20 via a bracket 16, a suspension rope 18 hung on the loop 17, and a club 11 side. It is constituted by a suspension driving device (not shown) and the like.

The spreader device 20 is composed of a pair of front and rear fixed beams 21 arranged side by side in a horizontal state.
Left and right direction supported by 21 (running direction of running body 1)
A pair of telescopic beams 23A and 23B that can be telescopically extended, and a telescopic drive device 30 that telescopically moves the telescopic beams 23A and 23B away from each other or in an approaching direction. The two fixed beams 21 are connected to each other between the upper surfaces thereof.
22 and the bracket 22
16 are provided.

[0006] The telescopic beams 23A and 23B are conveyed object support portions 24A and 24B positioned along the front-rear direction, and connected inward from the front and rear ends of the conveyed object support portions 24A and 24B. Telescopic guide part 25 supported and guided by fixed beam 21
A and 25B, and extendable and passive portions 26A and 26B continuously connected inward from the middle of the transported object support portions 24A and 24B are formed in a comb shape. On the lower surface side of the front and rear ends of the transported object support portions 24A and 24B, connecting tools 27A and 27B for a container (an example of the transported object) 38 are provided.

The telescopic drive device 30 is of a motor / chain drive type, and includes a pair of left and right sprockets 31 and 32 supported on the connecting body 22 side.
A chain 33 wound between the two retractable passive portions 26A and 26B and a drive motor (electric or hydraulic) 34 interlocked with one sprocket 31 and capable of driving forward and reverse. I have. And the parallel path part of the chain 33,
It is linked to the adjacent telescopic passive units 26A, 26B via interlocking bodies 35A, 35B.

According to the conventional cargo handling vehicle having the above structure, the traveling main body 1 is caused to travel rightward A or leftward B, and
11 to move forward C or reverse D, and spreader device
By a combination operation of raising and lowering the container 20, the container 38 is supported on the spreader device 20 side, and after the container 38 is transported, stacking can be performed.

At this time, the position of the container 38 during loading or stacking, that is, the position of the spreader device 20 with respect to the container 38, the position of the container 38 with respect to the container 38, the position of the container 38 with respect to the truck chassis, etc. As described above, the basic operation is performed by right traveling A or left traveling B of the traveling body 1 and forward C or backward D of the club 11.

[0010] The spreader device 20 is expanded and contracted to correspond to the length of the container 38 to be handled. That is, by driving the drive motor 34 of the telescopic drive device 30 forward and reverse, the chain 33 is rotated forward and reverse via the sprockets 31 and 32, and the telescopic passive unit 26A integrated via the interlocking bodies 35A and 35B. , 26B move the telescopic beams 23A, 23A.
B is expanded and contracted, and the pitch between the connecting members 27A and 27B is changed to correspond to the length of the container 38, as shown by the solid line and the imaginary line in FIGS.

[0011]

However, according to the conventional structure described above, the positioning of the container 38 with respect to the truck chassis is performed only by the forward C or the reverse D of the club 11,
In many cases, the right traveling A or the left traveling B of the traveling main body 1 is not performed. That is, at present, an instruction is given to a relatively simple track chassis to move forward and backward, thereby performing position adjustment in the left-right direction. However, in this case, the work flow is not smooth.

On the other hand, as shown in FIGS.
In the case of alignment of the spreader device 20 shifted with respect to the container 38 or alignment of the container 38 with respect to the container 38, the traveling main body 1 is caused to travel right or left B as in the case of the basic operation, so that the left and right directions Positioning is being performed. However, this alignment largely depends on the skill of the operator, and causes problems such as increased fatigue of the operator, work errors, and delays in work time.

This problem can be solved by improving the driving operation system to improve the fine operability of the traveling main body 1 in the straight traveling. However, in order to finely move a heavy-duty cargo handling vehicle, not only does the control circuit of the driving operation system become more complicated, but also the traveling motor 7 and the control inverter need to be increased in size, which immediately leads to a large cost increase. Become.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cargo handling vehicle capable of easily and smoothly aligning a traveling body in a traveling direction with a simple structure. is there.

[0015]

In order to achieve the above-mentioned object, according to the present invention, a cargo handling apparatus according to the first aspect of the present invention is provided on a rectangular frame-shaped traveling body so as to be movable in the longitudinal direction thereof. The spreader device is provided with a fixed beam to be moved up and down, a pair of telescopic beams which can be extended and contracted in the short direction with respect to the fixed beam, and which can support the carried object. A telescopic drive device that moves the telescopic beams in a direction away from or approaching each other, between the telescopic passive part and the conveyed object support part in both telescopic beams, the two conveyed objects with respect to the two telescopic passive parts. A position adjusting means for moving the supporting portion in the same direction is provided.

Therefore, according to the first aspect of the present invention, the spreader device is expanded and contracted in accordance with the length of the conveyed object before carrying out the cargo handling operation. That is, with the position adjustment means locked, the telescopic drive device is driven forward and reverse to move the telescopic passive unit in the forward and reverse directions. The forward / reverse movement of the telescopic passive unit is transmitted to the telescopic beam via both locked position adjusting means,
This allows the two telescopic beams to expand and contract in a direction away from or approaching each other, thereby making it possible to correspond to the length of the transported object. Then, at the time of cargo handling work, the traveling body is first made to travel in the short direction. At that time, the stopping accuracy in the running direction was poor,
When it is necessary to perform positioning by fine movement (fine adjustment), both position adjusting means are operated. Thus, the telescopic beams can be moved in the same direction, and the position of the transported object supporting portion with respect to the transported object can be adjusted.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
The state adopted for transporting containers will be described with reference to FIGS.

In the embodiment, a conventional example (FIG. 4)
To FIG. 6) are denoted by the same reference numerals, and detailed description thereof will be omitted. That is, 1 is a rectangular frame-shaped traveling body, 2 is a sill beam, 3 is a column, 4 is a girder, 5 is a tire, 6 is a bogie, 7 is a traveling motor, 8 is a hydraulic unit, 9 is an engine room, and 10 is Electric control room, 11 is a club, 12 is a driver's cab, 15 is a hanging device, 16 is a bracket, 17 is a wheel body, 18 is a hanging rope, 20 is a spreader device, 21 is a fixed beam, 22 is a connected body, 23A and 23B. Is a telescopic beam, 24A and 24B are transported object support parts, 25A and 25B are telescopic guide parts, 26A and 26B are telescopic passive parts, 27A and 27B are coupling tools, 30 is a telescopic drive device, 31 and 32 are sprockets, 33 Is a chain, 34 is a drive motor, 35A and 35B are interlocking bodies, 38 is a container (conveyed object), A is right running, B is left running, C is forward, and D is reverse.

In the cargo handling vehicle having the above-described configuration, the two telescopic passive parts 26A, 26B are provided between the telescopic passive parts 26A, 26B and the transported object support parts 24A, 24B in the telescopic beams 23A, 23B.
Position adjustment means for moving both the transported object support portions 24A and 24B with respect to B in the same direction is provided. In other words, the telescopic passive portions 26A and 26B are separated from the transported object support portions 24A and 24B, and the divided portions are connected via the cylinder devices 40A and 40B as an example of the position adjusting means. .

Here, in the cylinder devices 40A and 40B, the cylinder bodies 41A and 41B are fixed to the telescopic passive portions 26A and 26B, and the piston rods 42A and 42B are connected to the transported object support portions 24A and 24B. . And to operate both cylinder devices 40A and 40B, both cylinder devices
The extension chambers 43A, 43B of 40A, 40B are connected by a relay pipe 45, and a pair of supply / discharge pipes 46A, 46B communicated with the contraction chambers 44A, 44B are connected to a hydraulic source 48 via a switching valve 47. It is connected.

The operation of the above embodiment will be described below. Before handling cargo, handle containers 38
The spreader device 20 is expanded and contracted according to the length of the spreader.
That is, as shown by X in FIG. 2, the switching motor 47 is set to neutral, and the drive motor 34 of the telescopic drive device 30 is driven forward / reverse with both cylinder devices 40A and 40B locked. As a result, the chain
33 is rotated in the forward and reverse directions, whereby the telescopic passive units 26A and 26B integrated via the interlocking bodies 35A and 35B are moved in the forward and reverse directions.

The forward and reverse movements of the telescopic passive parts 26A, 26B can be transmitted to the telescopic beams 23A, 23B via the locking cylinder devices 40A, 40B, thereby expanding and contracting as shown by the solid line in FIG. The beams 23A, 23B can be extended, and the telescopic beams 23A, 23B can be contracted as shown by the phantom lines in FIG. It corresponds to.

At the time of cargo handling, positioning of the traveling body 1 in the traveling direction, that is, positioning of the container 38 with respect to the truck chassis, positioning of the spreader device 20 with respect to the container 38, and positioning of the container 38 with respect to the container 38 are performed. When performing, first, the traveling main body 1 is moved rightward A
Or, the vehicle is driven left B.

At that time, the stopping accuracy is poor.
When the spreader device 20 is shifted to the right with respect to the container 38 as shown by the solid line in FIG. In such a case, FIG.
The switching valve 47 is switched to the right as indicated by Y in FIG. Thereby, the pressure oil from the hydraulic pressure source 48 is supplied to the supply / discharge pipe 46.
Shrinkage chamber in cylinder device 40B on the right through B
Thus, the transported object support portion 24B and the telescopic beam 25B can be contracted (moved to the left) with respect to the fixed telescopic passive portion 26B.

At the same time, oil drained from the extension chamber 43B of the right cylinder device 40B can be supplied to the extension chamber 43A of the left cylinder device 40A via the relay pipe 45, so that the fixed telescopic passive unit The transported object support portion 24A and the telescopic beam 25A can be extended (moved to the left) with respect to 26A. At this time, oil drained from the contraction chamber 44A in the left cylinder device 40A can be recovered via the supply / discharge pipe 44A, the switching valve 47, and the like.

By the above operation, the telescopic beams 23A and 23B, that is, the connecting members 27A and 27B can be moved to the left (moving in the same direction) as shown by phantom lines in FIGS. Connecting parts 27A, 27B for the parts to be connected
Can be aligned.

For example, when it is necessary to slightly move the switch valve 47 to the right side, the same operation can be achieved by switching the switching valve 47 to the left side. The fine movement (fine adjustment), that is, the positioning, as described above, can be performed by operating the valve, so that even an unskilled operator can easily perform the work with a small amount of work, with less work mistakes, and quickly.

The telescopic beam 23 of the spreader device 20
Since the configuration is such that A and 23B are slightly moved, the structure can be provided relatively simply and inexpensively. The traveling main body 1 can travel in the longitudinal direction by displacing the direction of the tire 5 in the bogie 6 by 90 degrees.

In the above embodiment, the telescopic drive device 30 of the motor / chain drive type is shown, but this may be a cylinder type or a screw shaft type. In the embodiment described above, the cylinder devices 40A and 40B are shown as the position adjusting means, but this may be a screw drive type or the like.

In the above-described embodiment, the container 38 is shown as an object to be handled, but this may be another load.

[0031]

According to the first aspect of the present invention, when the traveling stop accuracy of the traveling main body in the short direction is poor and it is necessary to perform positioning by fine movement (fine adjustment), both position adjusting means are used. By operating, the telescopic beams can be moved in the same direction, and the position of the transported object support portion with respect to the transported object can be adjusted. At this time, the fine movement can be performed by the operation of the position adjusting means, so that even an inexperienced operator can easily perform the work with a small amount of work, with less work mistakes, and quickly. Because it is a configuration that improves to move,
Relatively simple and inexpensive to provide.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention and is a perspective view of a cargo handling device.

FIG. 2 is a plan view of a spreader device portion in the cargo handling device.

FIG. 3 is a partially cutaway side view of a spreader device portion in the cargo handling device.

FIG. 4 is a perspective view of a cargo handling device, showing a conventional example.

FIG. 5 is a plan view of a spreader device portion in the cargo handling device.

FIG. 6 is a partially cutaway side view of a spreader device portion in the cargo handling device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling body 4 Girder 12 Operator's cab 15 Hanging device 20 Spreader device 21 Fixed beam 23A Telescopic beam 23B Telescopic beam 24A Conveyed object support part 24B Conveyed object support part 25A Telescopic guide part 25B Telescopic guide part 26A Telescopic passive part 26B Telescopic passive Part 27A Connecting device 27B Connecting device 30 Telescopic drive device 33 Chain 34 Drive motor 35A Interlocking body 35B Interlocking body 38 Container (conveyed object) 40A Cylinder device (position adjusting means) 40B Cylinder device (position adjusting means) 43A Extension room 43B Extension room 44A Contraction room 44B Contraction room 47 Switching valve A Right running B Left running C Forward D Reverse

Claims (1)

[Claims] The traveling body in the form of a rectangular frame is provided with a spreader device movable in the longitudinal direction and movable up and down. The spreader device comprises a fixed beam to be raised and lowered,
The fixed beam is composed of a pair of telescopic beams that can expand and contract in the short direction and support the object to be transported, and a telescopic drive device that expands and contracts these telescopic beams in a direction away from or closer to each other. Characterized in that a position adjusting means is provided between the telescopic passive part and the transported object support part in the telescopic beam, for moving both the transported object support parts in the same direction with respect to the two telescopic passive parts. apparatus.