JPH0940352A - Container loading machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the manufacturing cost of an adapter and also save the storage space by making a connecting adapter an extendable connecting adapter which can be extended and contracted while interlocking it with the extending/ contracting operation of a telescopic spreader. SOLUTION: An extendable connecting adapter 1 consists of a fixed frame 1a and an extendable frame 1b provided at its both sides, and when a telescopic spreader 2 in the straddle carrier side connected through a connecting lock pin 31 is extended or contracted, the length of the connecting abapter 1 is extended or contracted according to the movement. That is, one connecting adapter 1 can be set extendably to the position where it can be connected with open top containers 4a, 4b with different lengths. The connection of a center pin of the telescopic spreader 2 and a center pin of the connecting adapter 1 has only a fitting structure so that the rotation can be transmitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided on the side of a container handling machine such as a straddle carrier, and is inserted between a telescopic spreader and an overheight cargo that are extendable and retractable in the length direction of the overheight cargo to connect them to each other. The present invention relates to a container handling machine having a connecting adapter.

[0002]

2. Description of the Related Art A conventional container handling machine is shown in FIGS.
This will be described below. FIG. 7 is a plan view of the fixed connection adapter, and FIG. 8 is a side view of the fixed connection adapter.
7 and 8 show the open top container 4 and the upper surface thereof via the fixed connecting adapter 29 to the telescopic spreader 2 provided on the straddle carrier side and capable of expanding and contracting in the length direction of the overheight cargo. It shows a state in which an overheight cargo (the luggage 3 and the open top container 4 are collectively referred to as an overheight cargo) that is protruding to the front is coupled.

FIG. 9 is an explanatory view of the action of the connecting lock pin, and FIG. 10 is an explanatory view showing the engaged state of the center pin. As shown in FIGS. 7 and 8, the telescopic spreader 2 is composed of a fixed portion 2a and a stretchable portion 2b, and the length of the open top container 4 (generally 2
The telescopic portion 2b can be telescopically moved according to (0 'and 40').

Twist lock pins 31 shown in FIG. 8 (twist lock pins 31 having the same shape as the member 13 shown by hatching in FIG. 9) are attached to the four corners of the expandable portion 2b, and they are 20 'and 40', respectively. Of the telescopic spreader 2 by inserting it into the elongated hole of the fixed connection adapter 29 manufactured exclusively for the open top container 4 and rotating 90 ° through the cylinder (not shown) and the link mechanism (the position indicated by the alternate long and short dash line). And fixed connection adapter 2
9 and 9 are connected.

In the figure, 7 is a telescopic spreader 2.
It is a positioning guide for connecting the fixed connection adapter 29 with the fixed connection adapter 29. At the time of this connection, the center pin 5 provided at the center of the telescopic spreader 2 is
As shown in FIG. 5, the fixed coupling adapter 29 is guided and fitted into the center pin 6 having the guide groove, and the rotation is transmitted.

The fixed connection adapter 29 and the open top container 4 are connected to each other after the telescopic spreader 2 and the fixed connection adapter 29 are connected to each other, and the center pin 5 is connected via a hydraulic cylinder (hook cylinder) 8. When it is rotated by a predetermined amount, the center pin 6 of the fixed connecting adapter 29 fitted with the center pin 5 rotates, and the fixed type is inserted into the hole of the open top container 4 through the link mechanism described later. The connecting lock pin 13 of the connecting adapter 29 is rotated.

That is, the link mechanism is composed of the rotation centers 6 and 30 of the links and the upper links e, f, g, h, i and j. When the center pin 5 is rotated by the hook cylinder 8 in the arrow direction, Each link moves in the direction of the arrow, and the connecting lock pin 13 rotates 90 °. As a result, the fixed connection adapter 29 and the open top container 4 are combined, and the overheight cargo 3,
4 can be handled.

[0008]

In the container handling machine shown in FIGS. 7 to 10, the fixed connection adapter 29 is used.
A mechanical link mechanism has been adopted as means for rotating the connecting lock pin 13 on the side. For this reason, the adapter 2
9 had to be a fixed frame whose length could not be changed. Therefore, (1) it is necessary to prepare a dedicated fixed connection adapter 29 for each of the over-height cargos 3 and 4 (normally 2 types for 20 'and 40') having different lengths, Manufacturing cost is high. (2) In connection with the above item (1), a large space is required to store various fixed connection adapters 29. (3) The fixed connection adapter 29 has to be replaced with the telescopic spreader 2 according to the length of the over-height cargos 3 and 4, and it takes a lot of time for replacement and replacement, which lowers the cargo handling efficiency. was there.

The present invention is proposed in view of the above-mentioned problems, and the object thereof is to reduce the manufacturing cost of the adapter, save the storage space, greatly improve the cargo handling efficiency, perform the maintenance inspection, The point is to provide a container handling machine that can reduce expenses such as repairs.

[0010]

In order to achieve the above object, a container cargo handling machine of the present invention is a telescopic spreader which is provided on the side of a container cargo handling machine such as a straddle carrier and which can be expanded and contracted in the length direction of an overheight cargo. And an overheight cargo, each of which has a connecting adapter for connecting each other, and the connecting adapter is an expandable telescopic connecting adapter that can be expanded and contracted in association with expansion and contraction of the telescopic spreader (claim Item 1).

In the container handling machine according to the first aspect of the present invention, there is provided a connecting lock pin for connecting the telescopic connecting adapter and the overheight cargo and a rotating means therefor, and the rotating means is the connecting lock pin. The link mechanism may be attached to the hydraulic cylinder, the hydraulic cylinder that operates the link mechanism, and the flexible hydraulic hose connected to the hydraulic cylinder (claim 2).

In the container cargo handling machine according to the first aspect, there is provided a connecting lock pin for connecting the telescopic connecting adapter and the overheight cargo and a rotating means thereof, and the rotating means is the center of the telescopic spreader. A worm fixed to the pin, a worm wheel rotated by the worm, and a link mechanism for transmitting the rotation of the worm wheel to the connecting lock pin to rotate the connecting lock pin (claim) Item 3).

The container cargo handling machine according to claim 1, further comprising a connecting lock pin for connecting the telescopic connecting adapter and the overheight cargo, and a rotating means therefor, the rotating means switching the electric circuit. And a link mechanism for transmitting the rotation of the electric rotating mechanism to the connecting lock pin to rotate the connecting locking pin (claim 4). .

In the container handling machine according to the first aspect of the present invention, there is provided a connecting lock pin for connecting the telescopic connecting adapter and the overheight cargo and the rotating means thereof, and the rotating means is operated by fluid pressure. And a link mechanism for transmitting the rotation of the fluid pressure turning device to the connecting lock pin to turn the connecting lock pin (claim 5).

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) Next, a telescopic coupling adapter for a container handling machine according to the present invention will be described with reference to the embodiments shown in FIGS. FIG. 1 is a plan view showing a telescopic connection adapter of the container handling machine, FIG. 2 is a side view of the telescopic connection adapter, and FIGS. 3 to 6 are connection locks of the telescopic connection adapter. It is explanatory drawing which shows the rotation mechanism of a pin.

Reference numeral 1 denotes a telescopic connection adapter, which is composed of a fixed frame 1a and telescopic frames 1b provided on both sides of the fixed frame 1a, and is connected via a lock pin 31 for connection. When the telescopic spreader 2 on the straddle carrier side expands or contracts, the length of the telescopic connecting adapter 1 expands or contracts accordingly.

That is, one telescopic connecting adapter 1 can be telescopically set to a position where it can be connected to any open top container 4 having a length of 20 'or 40'. As shown in FIGS. 3 and 4, the connection between the center pin 5 of the telescopic spreader 2 and the center pin 6 of the telescopic connection adapter 1 has a structure in which rotation can be transmitted only by fitting as in the conventional case. .

The fixed portion 2a of the telescopic spreader 2 and the fixed frame 1 of the telescopic connecting adapter 1
The position of “a” is regulated via two guides 7. FIG. 3 shows a rotating mechanism of the connecting lock pin 31 in which a plurality of sets of hydraulic cylinders are combined, and the telescopic spreader 2 is moved by expanding and contracting the hydraulic cylinder 8.
When the center pin 5 and the center pin 6 of the telescopic connecting adapter 1 rotate, the arm a fixed to the center pin 6 swings, and this swing is converted into reciprocating motion of the hydraulic cylinder 9.

The hydraulic cylinders 9 and 10 have a closed circuit formed by the hydraulic hoses 11a and 11b and are filled with hydraulic oil, so that the force is accurately transmitted. Further, the hydraulic hoses 11a and 11b are held by a cable bear so that there is no looseness corresponding to the length of 20 'or 40'. This cable carrier is composed of a plurality of hose holder pieces having a width according to the size and number of hydraulic hoses,
This holds the hydraulic hoses 11a and 11b. A chain link is attached to both sides of the holder piece, and the degree of slack of the hydraulic hose is adjusted by winding or unwinding the chain connecting the chain links.

Therefore, regardless of the position of the telescopic frame 1b, the rotation of the center pin 6 is transmitted to the link b, and when the link b rotates about the fulcrum shaft 12, the links c and d.
The lock pin 13 rotates via the. As a result, the telescopic connection adapter 1 and the open top container 4 are connected. The direction of movement of each link and hydraulic piston shaft due to the rotation of the center pin 6 is indicated by an arrow.

When the connecting lock pin 13 is removed, the center pin 6 rotates in the opposite direction, the above-mentioned members act in the opposite arrow direction, and the connecting lock pin 13 is released. FIG. 4 is a mechanism for mechanically rotating the lock pin 13, and includes a pair of worm wheels 15 and 15 that mesh with the worm 14 of the center pin 6 portion that is provided oppositely, a central shaft 16 of each worm wheel 15, and The center shaft 16 includes a shaft 17 that fits in the inner diameter portion of the center shaft 16 and moves in the axial direction, a miter gear 18, and the like.

The shaft 17 which moves in the central shaft 16 changes the length of fitting into the central shaft 16 according to the expansion and contraction of the expandable frame 1b, and restricts the movement in the rotational direction to rotate the worm wheel 15. It is designed to be transmitted to the miter gear 18. For example, in FIG. 4, the central axis 16 is a square pipe,
The moving shaft 17 is a square rod that moves in the square hole of the square pipe, but it may be replaced with a key or a spline.

FIG. 5 shows an electrically operated screw cylinder 1
9 shows a rotation mechanism of the connecting lock pin 13 which adopts No. 9. In the case of this type, the telescopic coupling adapter 1 is located substantially at the center in the front end lateral width direction of the telescopic frame 1b, and the electric shaft of the electric screw cylinder 19 or the like is switched to cause the cylinder shaft 20 to rotate at a predetermined angle (90 degrees). It has a shaft rotating means (device) capable of rotating, and connects an arm 21 fixed to the cylinder shaft 20 and an arm 22 of the lock pin 13 via a link 23.

In the case of this type, by rotating the cylinder shaft 20 of the electric screw cylinder 19 in the forward and reverse directions, the lock pins 13 provided at the four corners of the front end of the expansion and contraction adapter 1b are rotated by 90 degrees, and opened in the same manner as in the above example. The top container 4 can be attached and detached. Further, in the case of FIG. 6, a jig cylinder 24 which operates by hydraulic pressure (or air pressure) is provided in place of the electric screw cylinder 19 of FIG. 5, and a high hydraulic pressure from a hydraulic pump 25 is supplied to a hose 26 and a solenoid valve 27. The open top container 4 can be attached to and detached from the lower end of the telescopic adapter 1 by rotating the connecting lock pin 13 by sending it to the jig cylinder 24 and switching the solenoid valve 27.

A solenoid valve 27 for switching the operation of the electric screw cylinder 19 and the hydraulic path to the jig cylinder 24.
Is operated remotely by a control panel in the operator's cab via a jack (electrical contact) 28 that is communicated by the engagement of the telescopic spreader 2 and the telescopic connecting adapter 1. , After confirming by other means, whether or not the indicator 7 is turned on by a detection signal transmitted when the telescopic connection adapter 1 and the open top container 4 correspond (engage) with a predetermined position by the guide 7, It is supposed to be done. An interlock circuit can be incorporated to ensure the safety of operation.

In the case of FIGS. 5 and 6, the structure is simplified because the center pins 5 and 6 and the drive system for the center pins 5 and 6 are unnecessary. The wiring or piping installed in this form is also supported via the cable bear or the like in FIG. 3 so that the slack associated with the expansion and contraction movement of the expansion and contraction frame 1b is absorbed.

Since the telescopic connection adapter 1 of the container cargo handling machine of the present invention is constructed as described above, it can be widely used in various cargo handling machines such as cranes and forklifts other than the exemplified straddle carrier. In the case of FIG. 4, the miter gear or the like may be replaced with another mechanism (device) having the same function such as a bevel gear or a combination of a worm and a worm wheel.

[0028]

As described above, the expansion / contraction adapter of the container cargo handling machine of the present invention is configured to be expandable / contractible in conjunction with the expansion / contraction operation of the telescopic spreader, and can be expanded / contracted regardless of the set length (position). Since the connection adapter and overheight cargo can be combined, it is not necessary to prepare multiple types of fixed connection adapters as in the conventional case, and one type (1 unit) of telescopic connection adapter can be used. The cost of manufacturing the adapter can be reduced.

It is also possible to connect (correspond) to overheight cargos of various lengths with one telescopic connecting adapter,
You can save storage space. Also, even if the length of the over-height cargo is different, it is possible to eliminate the work of replacing the telescopic coupling adapter, which can greatly improve the cargo handling efficiency.
In addition, maintenance and inspection costs can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a telescopic coupling adapter for a container handling machine according to the present invention.

FIG. 2 is a side view showing the telescopic coupling adapter.

FIG. 3 is an explanatory diagram showing a rotating mechanism (a rotating mechanism combining a plurality of hydraulic cylinders) of a connecting lock pin of the telescopic connecting adapter.

FIG. 4 is an explanatory view of a rotating mechanism (a rotating mechanism combining a worm, a worm wheel, and a miter gear) of a connecting lock pin of the telescopic connecting adapter.

FIG. 5 is an explanatory view of a rotating mechanism (a rotating mechanism that employs an electrically operated screw cylinder) of a connecting lock pin of the telescopic connecting adapter.

FIG. 6 is an explanatory diagram of a rotation mechanism (a rotation mechanism that employs a jig cylinder that operates with hydraulic pressure (pneumatic pressure) instead of the screw cylinder) of the lock pin for connection of the telescopic connection adapter.

FIG. 7 is a plan view showing a fixed connection adapter of a conventional container handling machine.

FIG. 8 is a side view of the fixed coupling adapter.

FIG. 9 is an explanatory diagram of a connecting lock pin.

FIG. 10 is an explanatory view showing the engaged state of the center pin.

[Explanation of symbols]

 1 Telescopic adapter 2 Telescopic spreader 3, 4 Overheight cargo 3 Luggage 4 Open top container 4a 20 'Container length position 4b 40' Container length position 5 Center pin 6 Center pin 7 Positioning guide 8 Hydraulic cylinder 9 Hydraulic cylinder 10 Hydraulic cylinder 11 hydraulic hose 12 fulcrum shaft 13 lock pin 14 worm 15 worm wheel 16 center shaft 17 moving shaft 18 miter gear 19 screw cylinder (shaft rotating device) 20 cylinder shaft 21 arm 22 arm 23 link 24 jig cylinder 25 hydraulic pump 26 hose 27 electromagnetic valve 28 Electric Contact 29 Telescopic Adapter 30 Central Shaft 31 Lock Pin for Connection

Claims (5)

[Claims] 1. A connecting adapter that is provided on the side of a container handling machine such as a straddle carrier and that is inserted between the telescopic spreader and the overheight cargo that can expand and contract in the length direction of the overheight cargo and that connects the two with each other. A container handling machine, wherein the connecting adapter is a telescopic connecting adapter that can expand and contract in conjunction with expansion and contraction of the telescopic spreader. 2. A link mechanism having a connecting lock pin for connecting the telescopic connecting adapter and the overheight cargo and a rotating means for the connecting lock pin, wherein the rotating mechanism is attached to the connecting lock pin. 2. The container loading / unloading machine according to claim 1, comprising a hydraulic cylinder for operating the link mechanism and a flexible hydraulic hose connected to the hydraulic cylinder. 3. A worm having a connecting lock pin for connecting the telescopic connecting adapter and the overheight cargo and a rotating means thereof, the rotating means being fixed to a center pin of the telescopic spreader. The container handling machine according to claim 1, comprising a worm wheel that rotates by the worm and a link mechanism that transmits the rotation of the worm wheel to the connecting lock pin to rotate the connecting lock pin. 4. An electric rotating device having a connecting lock pin for connecting the telescopic connecting adapter and the overheight cargo and a rotating means for the connecting locking pin, wherein the rotating means is operated by switching an electric circuit. 2. The container cargo handling machine according to claim 1, comprising a mechanism and a link mechanism for transmitting the rotation of the electric rotation mechanism to the connecting lock pin to rotate the connecting lock pin. 5. A fluid pressure rotating device having a connecting lock pin for connecting the telescopic connecting adapter and the overheight cargo and a rotating means thereof, wherein the rotating means is operated by fluid pressure. The container handling machine according to claim 1, further comprising: a link mechanism that transmits the rotation of the fluid pressure rotating device to the connecting lock pin to rotate the connecting lock pin.