JPH0437739Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a rotation regulating device for a rotation table for a cargo handling machine, and in particular, for a cable connecting the rotation side and the fixed side of the cargo handling machine, the rotation side is fixed. The present invention relates to a rotation restriction device for a rotation table for a cargo handling machine, which restricts the rotation table from rotating more than one turn relative to the side.

[Prior Art] Conventionally, devices as shown in FIGS. 9 and 10 are known as rotation regulating devices for rotating tables for cargo handling machines.

FIG. 9 is a diagram showing a forklift b as a cargo handling machine suspended from a beam a provided on the ceiling side. In the figure, c is a truck portion serving as a fixed side of a forklift b that is movably suspended from a beam a. This forklift b has a lift part e as a turning side to which a fork d is attached to a truck part c.
is attached so that it can rotate freely.

Then, between the truck part c and the lift part e, these are connected and hydraulic oil, power supply, etc. are connected from the truck part c to the lift part e.
Since the pipes, cables, etc. that are supplied to the shaft are disposed, a turning restriction device f is provided to prevent turning more than one rotation.

As shown in FIG. 10, this turning restriction device f is
It is composed of a stopper g fixedly provided on the truck part c and a stopper arm h fixedly provided on the lift part e. The lift part e moves the stopper arm h to the stopper g by its pivoting motion.
The turning movement is restricted when it comes into contact with the object, and no further turning is possible.

[Problems to be solved by the invention] However, in the swing regulating device f having the above structure, the stopper arm h fixed to the lift part e is connected to the stopper g fixed to the trolley part c on one side or the other side thereof. Since the pivoting movement of the lift part e is restricted by contact with the stopper g, the thickness of the stopper g (in the figure
The rotation of the lift portion e is restricted by an angle α), and this portion becomes a dead space. Therefore, there was a problem in that the working range of the forklift b was narrowed.

On the other hand, a "swivel axis positioning device" (Japanese Patent Publication No. 55-25040) attempts to absorb the inertial load when positioning a rotating industrial robot.
is proposed. This proposal discloses a configuration in which the positioning movable body and the protruding pin are used to rotate within an appropriate range of more than 360 degrees, and if this configuration is applied, the above problem can be solved to some extent. However, in order to absorb the impact force during positioning, the positioning moving body is constantly energized by an oil damper, which makes the entire device complicated and large-scale, and there are restrictions on installation space, especially in ship holds. Difficult to apply in some places.

In view of the above-mentioned circumstances, the present invention has been devised to provide a turning regulating device that does not create dead space and has a simple and compact structure.

[Means for Solving the Problems] The present invention provides a revolving table for a cargo handling machine that supports the cargo handling equipment and restricts the rotary table, which is rotatably provided, from rotating more than one rotation with respect to a fixed side. In the rotation regulating device, a stopper arm provided extending from the rotation table to a fixed side, a guide member provided on the fixed side and formed with a predetermined length along a turning trajectory of the stopper arm,
A sliding base that engages with the guide member and moves back and forth between its ends, and a sliding end that extends from the sliding base toward the rotating table and has cushioning material facing both sides that abut the stopper arm. and a sliding stopper.

[Operation] When the rotating table rotates in one direction and the stopper arm comes into contact with the sliding end of the sliding stopper, the sliding stopper is pushed by the stopper arm and slides along the guide member, and the sliding part is guided. It stops when it hits the end of the member. Also, when the turning table turns in the opposite direction and the stopper arm comes into contact with the opposite side of the sliding end of the sliding stopper, the sliding stopper is pushed by the stopper arm and slides in the opposite direction, and the sliding part is guided. It stops when it hits the opposite end of the member. The stopping position at this time is
The position close to the stopping position when turning in one direction,
Alternatively, it can be set to a position beyond this by an appropriate distance.

[Example] An example of the present invention will be described below with reference to the accompanying drawings.

In this embodiment, a forklift suspended from the ceiling of a hold of a cargo ship will be used as an example of a cargo handling machine.

In FIG. 7, 1 is a deck, 2 is a sideboard, and 3 is a double bottom plate, and a hold 4 is formed by these. Note that 5 is a support.

This hold 4 is installed on the ceiling 6 (deck 1) inside the hold 4.
A traveling girder 7 is provided which runs on its own in the direction of the ship's captain. The traveling girder 7 is provided with a shuttle beam 8 that slides in its longitudinal direction and extends to the side 2. And this shuttle beam 8
A forklift 9 serving as a cargo handling machine is suspended so as to be movable.

The forklift 9 is composed of a truck part 12 as a fixed side that is suspended from the shuttle beam 8 and moves along the beam 8, and a lift part 14 as a swing side equipped with a fork 13. is provided to be rotatable with respect to the truck portion 12.

A swing regulating device 15 (see FIG. 6) of the present invention is installed between the truck section 12 and the lift section 14 in order to prevent twisting of the hydraulic oil pipes, power cables, etc., which are connected to these parts. It is provided.

This turning restriction device 15 is designed as shown in FIGS. 1 to 5.

Lift part 14 which is the turning side of forklift 9
A rotating table 18 is formed on the upper surface of the rotating table 18, and a stopper arm 19 is provided extending from the rotating table 18 to the fixed side truck portion 12. Then, at the turning stop position, which is the turning limit position of the lift section 14 when turning right or turning left, the truck section 12 corresponding to the stopper arm 19
A bracket 20 is provided as a guide member. This bracket 20 has a predetermined length within the swing tolerance range described below on the side facing the stopper arm 19 and a stopper arm 19.
A guide groove 21 is formed along the turning locus. The guide groove 21 is provided with a sliding stopper 22 that fits therein and slides along it.

This sliding stopper 22 slides within the guide groove 21 and has cushioning material on both sides 25 and 26 of the guide groove 21 that absorbs the impact when it comes into contact with both end walls 27 and 28 that are the opposite ends of the guide groove 21. A sliding base 31 is provided with cushioning rubbers 29 and 30, and a sliding base 31 is provided extending from the sliding base 31 to the rotation area of the stopper arm 19. The sliding end portion 37 is provided with cushioning rubber 35 and 36 as materials.

The end wall 27 of the bracket 20 can be removed by means of a flange 40, and the sliding stopper 22 is inserted into the guide groove 21 of the bracket 20 after removing the flange 40.

Here, the allowable turning range refers to the position where the lift section 14 turns to the right (turning in the direction of arrow 42 in the figure) and the stopper arm 19 is stopped from turning by the sliding stopper 22, and There is a gap β between the position where the stopper arm 19 is stopped by the sliding stopper 22 when the section 14 turns to the left (in the direction of arrow 43 in the figure) (see Fig. 2).
In other words, the sliding stopper 22 should be slid to such an extent that the lift section 14 does not turn more than 360 degrees and a dead space (an area where the forklift 9 cannot perform turning operations) is created around the lift section 14. This refers to the range within which it is possible. In other words, in FIG. 1, when the width H of the sliding end 37 of the sliding stopper 22 and the width L of the stopper arm 19, the allowable swing range M is 2H+L+β>M>2H+L
This is the range in which

The length of the guide groove 21 of the bracket 20 is set such that the sliding distance of the sliding stopper 22 fitted therein is a predetermined distance within the allowable swing range. In this embodiment, the guide groove 21 of the bracket 20 is formed to have a length that is at the maximum of the allowable swing range.

Next, the work will be explained.

For example, when transporting the cargo 45 from the cargo hold 4, the traveling girder 7 is moved to a predetermined position, the shuttle beam 8 is extended toward the cargo 45, and the forklift 9 is moved to the cargo 45 position. Then, the lift section 14 of the forklift 9 lifts and transports the surrounding cargo while rotating.

At this time, the swing regulating device 15 of the forklift 9
works as follows.

The lift part 14 of the forklift 9 turns to the right (turns in the direction of arrow 42 in FIG. 1 or 2).
Then, the stopper arm 19 moves to the sliding stopper 2.
2 and pushes the stopper 22 along the guide groove 21. When the sliding base 31 of the stopper 22 hits the end wall 28 of the guide groove 21, the rightward rotation of the lift section 14 is stopped at this point.

When the lift section 14 turns to the left (turns in the direction of arrow 43 in FIG.
It hits the buffer rubber 36 on the opposite side of stopper 2.
2 along the guide groove 21 to the opposite side.
Then, when the sliding base 31 of the stopper 22 comes into contact with the end wall 27 of the guide groove 21, the leftward rotation of the lift section 14 stops at this point.

As a result, the stopper arm 19 can turn over 360 degrees, and the lift section 14 can perform work over the entire circumference without creating a dead space around it.

Further, the rotating stopper arm 19 is connected to both end walls 27, 2 of the bracket 20 via the sliding stopper 22.
The impact when stopped by the buffer rubber 35,
It is attenuated and absorbed by 36. Especially sliding stopper 2
2 moves smoothly as the stopper arm 19 rotates, and the buffer rubbers 35 and 36 directly abut against the end face of the stopper arm 19, so that stopping and buffering can be achieved reliably and appropriately. Since these brackets 20 and sliding stoppers 22 have extremely simple and compact structures, they can be widely and easily applied to existing cargo handling machines, including the cargo handling machine for cargo holds of this embodiment, and are extremely versatile. Get rich.

In this embodiment, the length of the guide groove 21 of the bracket 20 is set to the full extent of the allowable swing range, but the length of the guide groove 21 is not limited to this. If the sliding stopper 22 is provided so as to be able to slide along the turning locus of the stopper arm 19, the dead space that has conventionally been created will be reduced and work efficiency will be improved.

FIG. 8 shows another embodiment of the present invention.
A rod-shaped bracket 51 is provided as a guide member. The bracket 51 is attached to the truck portion 12 with both ends thereof bent, and a guide rod 52 extending along the turning locus of the stopper arm 19 is formed. On the other hand, the sliding stopper 53 has a tubular sliding base 54 formed to fit into the guide rod 52, and is configured to reciprocate between flanges 55 and 56 attached to both ends of the guide rod 52. It's getting old. That is, the sliding stopper that is pushed by the rotation of the lift section 14 is attached to the flanges 55, 5.
6, the turning range is restricted. This embodiment can have a simpler structure than that of the previous embodiment. Since the other configurations and effects are the same as those of the previous embodiment, the same reference numerals are given in the drawings, and the explanation thereof will be omitted.

In addition, in this embodiment, the forklift 9 suspended from the shuttle beam 8 was explained as an example of a cargo handling machine, but the present invention is not limited to this, and the cargo handling machine has a rotating part and a fixed part. If it is a machine, it can exhibit the same actions and effects as described above.

[Effects of the invention] In summary, the invention provides the following effects.

A stopper arm extending from the rotating table to the fixed side, a guide member formed along the rotation locus of the stopper arm provided on the fixed side, a sliding base that engages with this guide member, and both sides that abut the stopper arm. Since the sliding stopper has a sliding end provided with a cushioning material, no dead space is created when the turning table turns, and the workability of the cargo handling machine is improved.
The structure is simple, compact, and extremely versatile.

[Brief explanation of drawings]

Fig. 1 is a partial cross-sectional view showing a rotation regulating device of a revolving table for a cargo handling machine according to the present invention, Fig. 2 is a cross-sectional view taken along the - line in Fig. 1, and Fig. 3 is a cross-sectional view taken along the - line in Fig. 1. Figure 4 is a cross-sectional view taken along the - line in Figure 1, Figure 5 is a cross-sectional view taken along the - line in Figure 1, and Figure 6 is a cross-sectional view taken along the - line in Figure 1.
The figure shows how the swing regulating device of the present invention is installed, Figure 7 shows the forklift equipped with the swing regulating device of the present invention installed in the hold, and Figure 8 shows how the swing regulating device of the present invention is installed. FIG. 9 is a diagram showing another embodiment of the present invention, FIG. 9 is a diagram showing a forklift equipped with a conventional swing regulating device, and FIG. 10 is a schematic diagram showing a conventional swing regulating device. In the figure, 12 is a truck part, 14 is a lift part, 18 is a turning table, 19 is a stopper arm, 20 is a bracket serving as a guide member, 22 is a sliding stopper,
27 and 28 are end walls serving as both ends; 31 is a sliding base;
Numerals 35 and 36 are cushioning rubbers serving as cushioning materials, and 37 is a sliding end.

Claims (1)

[Scope of utility model registration request] A rotation regulating device for a revolving table for a cargo handling machine for restricting the rotation of a revolving table which supports the cargo handling equipment and is rotatably provided to the fixed side by one rotation or more with respect to a fixed side, the rotating table extends from the rotating table to the fixed side. A stopper arm provided as an extension, a guide member provided on the fixed side and formed with a predetermined length along a turning locus of the stopper arm, and engaged with the guide member to reciprocate between both ends thereof. and a sliding stopper having a sliding end portion extending from the sliding base toward the rotating table and provided with a cushioning material on both sides that come into contact with the stopper arm. Rotation regulating device for rotating tables for cargo handling machines.