JPH08217381A - Bucket positioning device for cable crane - Google Patents

Abstract

PURPOSE: To provide a bucket positioning device for a cable crane which can correct position displacing of a bucket and can contribute to automatizing the cable crane. CONSTITUTION: A stop region T of including a prescribed stop position S of a bucket 5 is interposed, to arrange a plurality of infrared sensors 12 in a matrix shape so that a light projecting/receiving part 12a, 12b of an infrared beam 11 is opposed to each other to a direction Y orthogonal to a laterally running direction of a traversing trolley 2 and further so that a projecting direction of the infrared beam 11 adjacent to each other is opposed. In this way, based on a pattern that the infrared beam 11 projected from the light projecting part 12a to the light receiving part 12b of the infrared sensor 12 is interrupted by the bucket 5, a stop position in the stop region T of the bucket 5 is confirmed, and a control device 14, outputting a correction drive signal 13 to a horizontally moving winch 4 in the case that the stop position of the bucket 5 is displaced, is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket positioning device for a cable crane.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventional cable crane, in which 1 is a main rope laid across the opposite shore,
2 is a traverse trolley that is arranged to traverse along the main rope 1,
3 is a horizontal moving rope whose both ends are connected to the traverse trolley 2, 4 is a horizontal moving winch around which the horizontal moving rope 3 is wound, 5
Is a bucket that can be lifted up and down by the hoisting rope 6 from the traverse trolley 2, and 7 is a hoisting winch that hoists and lowers the hoisting rope 6. The horizontal moving winch 4 is driven to drive the horizontal moving rope 3. By moving one end forward and the other end of the horizontal moving rope 3 horizontally, the traverse trolley 2 is horizontally moved along the main rope 1, while the hoisting winch 7 is driven to hoist and lower the hoisting rope 6. Thus, the bucket 5 is moved up and down.

Further, in the figure, 8 is a transfer carriage for transferring an object to be conveyed such as concrete from the outside and supplying it to the bucket 5, 9 is a ground hopper installed on the ground, and the bucket 5 of the cable crane is In a state in which the traverse trolley 2 is traversed and the bucket 5 is moved to a position below the transfer carriage 8 while being wound up to a desired height position, the transfer carriage 8
After the objects to be transported loaded on the bucket 5 are transferred to the bucket 5, the traverse trolley 2 is moved above the ground hopper 9, and the bucket 5 is lowered to a position directly above the ground hopper 9,
The lower portion of the bucket 5 is opened by a driving device (not shown) so that the transported object is dropped into the ground hopper 9. Regarding the transported objects stored in the ground hopper 9, the dump truck 10 is appropriately opened below the ground hopper 9 while the lower portion of the ground hopper 9 is opened by a driving device (not shown). The dump truck 10 is used to drop the cargo onto a loading platform and transfer it to a predetermined place.

[0004]

In the cable crane as described above, a so-called friction drum, which transmits the rotation of the drum to the rope by the frictional force generated between the drum and the rope, is used as the winch 4 for horizontal movement. Has been done.

If a winch of a type in which one end of a rope is fixed to a winch drum to wind up and down the rope, which is used for the hoisting winch 7, is used as the horizontal moving winch 4, Two winch drums are provided, and the ropes fed from each winch drum are connected to the traverse trolley 2, and when the traverse trolley 2 is moved by retracting the rope by one winch drum, the rope is fed out by the other winch drum. However, there is a drawback that the total length of the rope is significantly increased compared to the case where the friction drum is used. This is one of the reasons why the friction drum is used for the horizontal movement winch 4. Can be mentioned.

However, when a friction drum is used as the horizontal moving winch 4, it is unavoidable that slippage occurs between the horizontal moving rope 3 and the friction drum. By detecting the amount of rotation to obtain the amount of retraction and the amount of retraction of the horizontal moving rope 3 and controlling the horizontal positions of the traverse trolley 2 and the bucket 5, the position of the bucket 5 relative to the transfer carriage 8 and the ground hopper 9 is displaced. As a result, a trained operator was inevitably required, which made automation of the cable crane difficult.

In view of the above situation, the present invention intends to provide a bucket positioning device for a cable crane, which can correct the positional deviation of the bucket when transferring an object to be transported and can contribute to the automation of the cable crane. It is a thing.

[0008]

SUMMARY OF THE INVENTION The present invention comprises a traverse trolley arranged so as to traverse along a main rope extending in the horizontal direction,
A winch for horizontal movement that allows the traverse trolley to traverse along the main rope by retracting and unwinding the horizontally moving rope, a bucket that is hung from the traverse trolley, and a hoisting winch that raises and lowers the bucket by hoisting the hoisting rope. A bucket positioning device for a provided cable crane, with a stop region including a predetermined stop position of the bucket interposed therebetween,
A plurality of infrared sensors arranged so that the projection part and the light receiving part of the infrared beam face each other in a direction orthogonal to the transverse direction of the transverse trolley, and the projection directions of adjacent infrared beams are opposite to each other, The stop position in the stop region of the bucket is confirmed based on the pattern in which the bucket blocks the infrared beam projected from the light emitting unit of the infrared sensor to the light receiving unit, and the horizontal movement is performed when the stop position of the bucket is displaced. A bucket positioning device for a cable crane, comprising: a control winch for outputting a correction drive signal to a winch.

[0009]

Therefore, when the traverse trolley is moved by the drive of the horizontal movement winch and the bucket is sent into the stop area, the infrared beam projected from the light emitting section of the infrared sensor to the light receiving section is blocked by the bucket, The pattern of the infrared sensor in which the infrared beam is blocked by the bucket is determined by the control device.

When the control device determines that the stop position of the bucket deviates from the predetermined stop position based on the pattern of the infrared sensor in which the infrared beam is blocked, a correction drive signal is sent from the control device to the horizontal movement winch. The horizontal trolley is further moved by a required amount by the output of the horizontal movement winch, the stop position of the bucket is corrected, and the bucket moves to a predetermined stop position.

Further, since the projection directions of the infrared beams of the infrared sensors adjacent to each other are opposite, the infrared beams projected from the projecting section of the infrared sensor are received by the light receiving section of the adjacent infrared sensor. Is less likely to occur, reliability of detection of the stop position of the bucket is enhanced, and malfunction is prevented.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show one embodiment of the present invention,
The infrared beam 11 of the infrared beam 11 is sandwiched across a stop region T including a predetermined stop position S of the bucket 5 (a position for receiving the transferred object from the transfer carriage 8 or a position for dropping the transferred object to the ground hopper 9). A plurality of infrared sensors 12 are arranged in a matrix so that the light projecting section 12a and the light receiving section 12b face each other in a direction Y orthogonal to the transverse direction X of the transverse trolley 2, and the light projecting section 12 of the infrared sensor 12 is arranged.
Based on a pattern in which the bucket 5 blocks the infrared beam 11 projected from the light receiving unit 12b to the bucket 5
The stop position in the stop region T of the bucket 5
A control device 14 is provided for outputting a correction drive signal 13 to the horizontal movement winch 4 when the stop position is deviated.

Further, in the present embodiment, the infrared sensors 12 are arranged on one side (A side) of the bucket 5 where the stop region T is sandwiched so that the infrared beams 11 of the adjacent infrared sensors 12 project in opposite directions. Of the infrared sensor 12 are alternately arranged on the other side (B side) of the bucket 5 which sandwiches the stop region T. The light emitting sections 12a and the light receiving sections 12b are alternately arranged. It is set up.

Next, the operation of the above embodiment will be described.

When the traverse trolley 2 is moved by driving the horizontal moving winch 4 and the bucket 5 is fed into the stop area T, the infrared beam 11 projected from the light projecting portion 12a of the infrared sensor 12 to the light receiving portion 12b is generated. An infrared beam 11 is blocked by the bucket 5 and is blocked by the bucket 5.
The pattern of the infrared sensor 12 in which the power is cut off is the control device 1
It is determined in 4.

In the control device 14, the infrared beam 1
When it is determined that the stop position of the bucket 5 deviates from the predetermined stop position S based on the pattern of the infrared sensor 12 in which 1 is blocked, the controller 14 outputs the correction drive signal 13 to the horizontal moving winch 4. The traverse trolley 2 is further moved by a required amount by driving the horizontal moving winch 4, the stop position of the bucket 5 is corrected, and the bucket 5 is moved to a predetermined stop position S.

Further, in this embodiment, the infrared sensors 12 are provided on one side (A side) of the bucket 5 where the stop region T is sandwiched so that the infrared beams 11 of the adjacent infrared sensors 12 project in opposite directions. Of the infrared sensor 12 are alternately arranged on the other side (B side) of the bucket 5 which sandwiches the stop region T. The light emitting sections 12a and the light receiving sections 12b are alternately arranged. Since it is provided, the infrared beam 11 projected from the light projecting section 12a of the infrared sensor 12 is less likely to be received by the light receiving section 12b of the adjacent infrared sensor 12, and the reliability of detection of the stop position of the bucket 5 is reduced. This increases the quality and prevents malfunctions.

In this way, it is possible to correct the positional deviation of the bucket 5 when the transported object is transferred and contribute to the automation of the cable crane.

The bucket positioning device for a cable crane according to the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0021]

As described above, according to the bucket positioning device for a cable crane of the present invention, it is possible to correct the positional deviation of the bucket when transferring an object to be transported, which can contribute to the automation of the cable crane. Further, since the infrared beams are projected in opposite directions in the infrared sensors adjacent to each other, it is possible to further improve the reliability of detecting the stop position of the bucket and prevent malfunction. It can be effective.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing an arrangement of a light projecting unit and a light receiving unit of an infrared sensor according to an embodiment of the present invention.

FIG. 3 is a schematic configuration diagram showing a state in which a bucket enters a predetermined stop position S in a stop area in an embodiment of the present invention.

FIG. 4 is an overall view showing an example of a cable crane.

[Explanation of symbols]

 1 main rope 2 traverse trolley 3 horizontal moving rope 4 horizontal moving winch 5 bucket 6 hoisting rope 7 hoisting winch 11 infrared beam 12 infrared sensor 12a light emitting section 12b light receiving section 13 correction drive signal 14 control device S predetermined stop position T stop area X traverse direction of traverse trolley Y direction orthogonal to traverse direction of traverse trolley

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Fumiaki Honda, Inventor Fumiaki Honda, 1-1-15 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Co., Ltd. Toji Technical Center (72) Inventor, Takakazu Shimizu Toyosu, Koto-ku, Tokyo 1-15, Ishikawajima Harima Heavy Industries Co., Ltd. Toji Technical Center (72) Inventor Shigeki Murayama 3-15-15 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Co., Ltd. Toji Technical Center (72) Inventor Miyoshi Houma 1-19-10 Mori, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Ltd. Koto Office

Claims (1)

[Claims] 1. A traverse trolley arranged so as to traverse along a horizontally extending main rope, a horizontal moving winch for allowing the traverse trolley to traverse along the main rope by retracting and extending the horizontal moving rope, and a traverse. A bucket positioning device for a cable crane including a bucket that is hung from a trolley and a hoisting winch that raises and lowers the bucket by hoisting and lowering a hoisting rope. A plurality of infrared sensors arranged so that the projection part and the light receiving part of the infrared beam face each other in a direction orthogonal to the transverse direction of the transverse trolley, and the projection directions of adjacent infrared beams are opposite to each other, Based on a pattern in which the bucket blocks the infrared beam projected from the light emitting section of the infrared sensor to the light receiving section, Kicking verify stop position, the bucket positioner cable crane, characterized in that a control device for outputting a correction drive signal to the horizontal movement winch when the stop position of the bucket are offset.