JP2003245704A - Truck for transfer of roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cause no damage to a roll or the like by detecting the height of the roll correctly when it is put down on a roll stand, in a truck for the transfer of the roll equipped with a roll holding part supporting the roll and capable of moving up and down. <P>SOLUTION: In the truck for the transfer of the roll equipped with the roll holding part capable of moving up and down, an elastic material is fitted between a vertically moving member and the holding part. A detector which detects the change of the length of the elastic material caused by the change of the load on the roll holding part is installed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley for transporting rolls of a rolling mill to a roll stand for replacement or repair, and more particularly to a rolling roll transport equipped with a lifting device for handling rolls of a rolling mill for filament material. Concerning lifting technology for trolleys.

[0002]

2. Description of the Related Art There is a carrier truck that removes a rolling roll from a line and carries it to an off-line roll stand position in order to replace the rolling roll, perform maintenance inspection, and repair. Such a carriage has an up-and-down roll holding unit on which a rolling roll is placed, and the rolling roll is held by the roll holding unit and is conveyed on wheels by wheels. In such a carrier, the roll holding unit is moved up and down, the rolling roll is taken out from the line, transported, placed on the roll stand, and disassembled, replaced, and maintained. The roll holding portion of such a roll carrier truck holds the rolling rolls in a cantilevered manner in a truck handling rolling rolls such as wire rods and bar steel. When the rolling roll is placed on the roll stand, the roll holder of the roll carrier is lowered.

Conventionally, the raising and lowering work of the roll holder has been performed manually. Further, in the past, during the lifting and lowering work of the roll holding unit, the rotation amount of the screw jack that raises and lowers the roll holding unit is detected by a detector, and the height of the roll holding unit is calculated based on this detected value, and this height is calculated. When the height of the rolling roll reached the upper surface of the rolling stand, the rolling roll was placed on the rolling stand.

[0004]

In the conventional technique of moving the rolling roll from the roll holding portion of the roll carrier to the roll mounting table, the rolling roll is released from the roll holding table while the rolling roll is not attached to the roll mounting table. There is a problem that the roll falls on the roll stand and the rolling roll or the roll stand is damaged. Further, there is a problem in that the rolling operation is further continued even when the rolling roll is attached to the roll stand, and the rolling roll, the roll stand, or the roll carrier is damaged.

In the prior art, if the set value and the dimensional accuracy of the height detector and the roll stand are different, the rolling roll may be dropped or the rolling roll may be pressed against the roll stand to damage the equipment. was there. Further, when the rotation amount detector of the screw jack that raises and lowers the roll holding portion is deteriorated in accuracy or fails, the same trouble occurs.

The present invention solves such a problem and may damage the rolling roll itself, the roll conveying device, the roll placing table, etc. when the rolling roll is unloaded from the roll holding portion of the carrying vehicle onto the roll placing table. It is an object of the present invention to provide a rolling roll carrier which is devised so as not to exist.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in a rolling roll carrier having a roll holding unit that can be raised and lowered, a lifting member and the roll holding unit are provided. The rolling roll carrier is characterized in that an elastic member is interposed between the elastic member and a detector for detecting a change in the length of the elastic member due to a change in the load of the roll holder.

The detector has a height composed of a main body mounted on a roll holder and having a light emitting / receiving unit arranged in a height direction, and a light breaker mounted on an elevating member and moving up and down in the light emitting / receiving unit. A detector is suitable.

According to the present invention, a mechanism for displacing a load by a load is provided in a roll holding portion of a rolling roll carrier, and the displacement which changes depending on whether the rolling roll is loaded on the roll holding portion or unloaded, is detected, It is possible to judge that the rolling roll that is descending has arrived on the table and safely handle the rolling roll. According to the present invention, since the displacement detector detects that the relative height between the roll holder and the lifting device changes due to the change in the load on the roll holder, regardless of the height of the roll holder. It is possible to reliably determine whether there is a load or unloading.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows an overall view of the rolling roll carrier 1 according to the present invention. The rolling roll carrier 1 is equipped with wheels 11 on a lower frame 10 to run. An upright frame 12 is installed upright on the lower frame 10, and an elevating device 17 that moves up and down along the upright frame 12 is provided. The standing frame 12 is reinforced by an auxiliary frame 13. The elevating means for elevating the elevating device 17 is composed of the standing male screw rod 14 and the elevating member provided in the elevating device 17. The motor 16 is a male screw rod drive device 15.
To raise and lower the elevating member.

The elevating device 17 is provided with a roll holder 18 for holding the rolling roll 50. FIG. 2 shows an enlarged view of the vicinity of the roll holding portion 18 and the engaging portion 20 with the screw rod 14 of FIG. In this example, the rolling roll 50 is a comparatively lightweight one for rolling the linear material, and therefore the roll holding portion 18 holds one shaft end 15 in a cantilever manner. Lifting device 17
Elevating wheels 19 are provided between the two standing frames 12, and the standing frame 12 receives the reaction force of the roll 50 mounted by cantilever support to move up and down.

Conventionally, the lifting device 17 and the roll holding portion 18
Was integrally connected to a member having an internal thread that engages the standing screw rod 14. Then, the height of the member having the internal thread is calculated from the rotation amount of the standing screw rod 14.
When the holding of the rolling roll 50 is released, even if the height of the roll stand on which the rolling roll is placed is different from the expected height or the height is correctly recognized, the calculation including the measurement error of the detection device, etc. If an error occurs due to, the timing of releasing the holding of the rolling roll is incorrect based on this calculation,
There arises a trouble that the rolling roll falls on the roll stand 60 or the elevating device 50 pushes the roll stand downward. The present invention seeks to eradicate such troubles.

An enlarged view of an embodiment of the present invention of the engaging portion 20 engaging with the screw rod 14 is shown in FIG. FIG. 1 is a cross-sectional view showing an elevating mechanism of a roll carrier truck according to the present invention. In the present invention, the elevating member 21 provided with a female screw to be screwed onto the standing screw rod 14.
The members 32, 33 placed on the upper side of the spring 31
The roll holder 18 was attached to the member 33.
Further, a height detecting device 35 is attached to the roll holding portion 18 via a supporting leg 34.

On the other hand, the elevating member 21 is provided with an extending portion 22 extending upward, and a height detecting portion 23 is provided at the upper end thereof.
The height detection unit 23 interferes with the height detection device 35 through a space. For example, the height detecting device 35 is configured by arranging light emitting and receiving devices such as lasers continuously in the height direction, and the height detecting unit 23 is moved up and down in the light emitting and receiving device to block light. As a device, it is possible to detect a change in height depending on the blocking position. Further, for example, the height detection unit 23 made of a magnetic material in the magnetic field generated by the height detection device 35.
It is possible to detect the mutual interference caused by moving in and out, and to know the change in the relative height between the roll holding portion 18 and the elevating member 21.

For example, the rolling roll 50 is attached to the roll holding portion 18
When the elevating member 21 is lowered by holding the elevating member 21, the spring 31 is compressed by the mass of the rolling roll 50, and the height detecting device 35 moves downward accordingly, so that the positional relationship with the height detecting portion 23 is changed. I keep it. When the elevating member 21 is lowered and the rolling roll 50 arrives on the roll stand 60, when the elevating member 21 is further lowered, the rolling roll 5
The roll stand 60 receives the mass of 0, the rolling roll 50 does not descend, and the spring 31 extends. At this time, the height detection device 35 also does not descend, and the height detection unit 23 descends,
The height detector 35 immediately detects and outputs this change.
In accordance with this output, the lifting of the elevating member 21 is stopped and the holding of the rolling roll 50 of the roll holding unit 18 is released. The present invention eliminates the conventional troubles.

[0016]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, when the roll holding portion of the rolling roll carrier is moved up and down, the height detecting device detects the relative displacement between the roll holding portion and the lifting member. Therefore, when the rolling roll is placed on a roll stand or the like, it is possible to determine whether or not the weight of the rolling roll acts on the elevating device. Therefore, it is possible to handle the device without any troubles. According to the present invention, it becomes possible to easily put a rolling roll on a roll stand having an arbitrary height.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an example.

FIG. 2 is an explanatory diagram of a roll holding unit.

FIG. 3 is an overall view of an apparatus according to an embodiment.

[Explanation of symbols]

1 Rolling roll carrier 10 Lower frame 11 wheels 12 standing frame 13 frames 14 Standing male screw rod 15 Male screw rod drive 16 motor 17 Lifting device 18 Roll holding part 19 lifting wheels 20 Locking department 21 Lifting member 22 Extension 23 Height detector 31 spring 32, 33 members 34 Support 35 Height detector 50 rolling rolls 60 roll stand

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Minoru Fukuda             1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama             Shi) Kawasaki Steel Co., Ltd. Mizushima Steel Works

Claims (2)

[Claims] 1. A rolling roll carrier comprising a roll holding unit that can move up and down, wherein an elastic member is interposed between the lifting member and the roll holding unit, and the elastic member is caused by a change in a load of the roll holding unit. A rolling roll carrier, which is equipped with a detector for detecting a change in the length of the rolling roll. 2. The detector comprises a main body which is attached to a roll holder and has a light emitting and receiving unit arranged in a height direction, and an optical breaker which is attached to an elevating member and moves up and down in the light emitting and receiving unit. The rolling roll carrier according to claim 1, which is a height detector.