JP2552408Y2 - Roll rotating device for on-site repair of table rolls - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll rotating device for applying a rotation suitable for repair to a table roll when a table roll of various transport tables (roller table, roller conveyor, etc.) is repaired on site. Things.

[0002]

2. Description of the Related Art In a roller table of a rolling line or the like, when wear or the like occurs on the outer peripheral surface of a table roll, a method of removing a table roll body and repairing the same at another place where repair equipment is provided, without removing the roll. There is a method to repair on the spot.

[0003] When performing the latter on-site repair, the rotational speed of an existing rotary drive connected to the table roll is:
Generally, it is high speed and is not suitable as a roll rotation speed for repairing the outer peripheral surface of the table roll. For this reason, when repairing the outer peripheral surface of the table roll in the field, conventionally,
There is a method of repairing manually by a worker while directly turning the roll, and a method of repairing by rotating the roll with a simple roll rotating device other than the existing rotary drive device of the table roll.

For example, when performing finish grinding of a weld overlay and an overlay portion to repair a worn portion of a roll outer peripheral surface, in the case of the former manual repair, an operator manually repairs the roll by directly turning the roll. Therefore, the roll does not rotate continuously, welding and finishing grinding are intermittent, the finished state is not good, and the repair efficiency is poor.

As the latter roll rotating device, for example, as shown in Japanese Patent Application Laid-Open No. 3-71978, a table roll to be repaired is projected downwardly from the roll rotating device base on the upper surface of the table roll to be repaired. There is a structure in which a pair of small rotating rolls provided is pressed against each other and the small rotating roll is rotated by a motor to rotate the table roll to be repaired.

With such a roll rotating apparatus, welding and finish grinding can be performed continuously by rotating the table roll to be repaired at a speed suitable for repair, and the finish is good and the repair efficiency is improved. I do. Further, depending on the combination of the devices, the repair work can be automated.

[0007]

However, in the case of the conventional roll rotating device as described above, the screw shafts attached to both ends of the device base and the fixing device at the lower end of the spring are connected to the apron plate (conveyance) between the table rolls. substrate)
Is fixed by suction or the like, and a pair of small rotating rolls are pressed against the table roll from above.However, since the small rotating roll is fixedly arranged on the roll rotating device base, when the installation position of the device base is defective, In this case, the small rotating roll runs idle and the rotation is not transmitted to the table roll.

Further, when the apron plate is rattled, the apron plate moves and the roll rotating device body also moves. As a result, there is a disadvantage that the position of the small rotating roll is also displaced with respect to the table roll, and the small rotating roll idles.

The present invention has been made in order to solve the above-mentioned problems, and an object of the invention is to easily install the table roll above the table roll in a roll rotating device that rotates the table roll without removing it. The present invention provides a roll rotating device for on-site repair of table rolls, which can transmit a rotational force to a table roll reliably, can provide stable repair rotation, and can be a relatively simple and compact device. Is to do.

[0010]

SUMMARY OF THE INVENTION The present invention provides a roll rotating device for rotating a table roll at a speed suitable for the repair when the table roll is repaired on site.
A device mount installed above the table roll to be repaired, a rotary drive device including an electric motor and a speed reducer provided on the device mount, a driving pulley of the rotary drive device and a resting table roll; And a tensioner that applies tension to the endlessly wound belt.

The apparatus gantry is placed on an apron plate or a table roll located on both sides of the table roll to be repaired, or placed on a table roll to be repaired via an idle roll.

The belt includes a linear flat belt or V
Use a belt or the like that can be detachably joined to the ends with a joint fitting and a bolt. As the belt tensioner, a device that presses the belt with a tension pulley, an inter-axis distance adjusting device that moves a driving pulley, or the like is used.

[0013]

In the above construction, the apparatus frame is placed on the apron plate or the table roll to be repaired on both sides of the table roll to be repaired, and a linear belt is wound around the table roll to be repaired. After joining them together, they are wound around a drive pulley of a rotary drive device and tension is applied by a tensioner. When the driving pulley is rotated by the rotary driving device, the rotation is transmitted to the table roll by the belt, and the table roll rotates at a rotation speed suitable for on-site repair.

Since the roll rotating device is integrated with the table roll via the endless belt, it is only necessary to mount the device stand on an apron plate or the like, and no special fixing device is required. Furthermore, even if the apron plate rattles or the position of the drive pulley relative to the table roll is displaced due to the movement of the device base, the displacement can be absorbed by the endless belt. Can be reliably transmitted to the table roll.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. This is an example applied to on-site repair of a roller table in a rolling line. FIGS. 1 and 2 show an embodiment of a roll rotating device according to the present invention, and FIGS. 4 and 5 show modifications thereof.

As shown in FIGS. 1 and 2, the roller table RT includes a table roll R that is driven to rotate by an existing rotary drive (not shown), an apron plate P that covers between the table rolls R, and the like. The roll rotation device 1 according to the present invention is installed on the table roll R to be repaired.

The roll rotation device 1 mainly includes a device base 2, a rotation drive device 3, a drive pulley 4, a belt 5, and a tensioner 6. The device mount 2 has support legs 2A at both ends thereof, and a mounting plate 2B mounted on an apron plate P is attached to the lower end of the support legs 2A. The mounting plate 2B is formed to be long along the axial direction of the table roll R.

The rotary driving device 3 comprises an electric motor 3A and a speed reducer 3B, and the speed reducer 3B is mounted on the device base 2,
The drive pulley 4 is attached to the output shaft of the speed reducer 3B. The motor 3A is disposed on the opposite side of the drive pulley 4 to serve as a counterweight.
To connect the power supply. The electric motor 3A is provided with a control device capable of controlling the speed so that the number of rotations of the table roll R can be varied, for example, in the range of 0.5 to 2.5 RPM.

The belt 5 is detachably wound around the driving pulley 4 and the table roll R in an endless manner. The belt 5 is a V-belt having a larger frictional force than the flat belt, and the drive pulley 4 is also a V-pulley. In order to make the belt 5 detachable, a linear one is used, and the ends are detachably connected to each other. As shown in FIG. 3, the detachable belt includes, for example, bolt holes 10 at an equal pitch.
The end of the V-belt on which is formed is sandwiched between a pair of joint fittings 11 vertically, and this is fastened with bolts 12 (for example, a perforated V-rope manufactured by Mitsuboshi Corporation).

The tensioner 6 allows the belt 5 to be detached and the tension to be adjusted.
Mounted on top. The tensioner 6 includes a tension pulley 6A pressed against an outer surface (or an inner surface) of the belt 5, a screw shaft 6B to which the tension pulley 6A is rotatably attached at the tip, and a device shaft 2 into which the screw shaft 6B is screwed. It consists of a nut member 6C fixed above and a handle 6D for rotating the screw shaft 6B. By rotating the screw shaft 6B by the handle 6D, the tension pulley 6B moves forward and backward with respect to the belt 5.

Although the belt 5 is wound around the table roll R by one, the belt 5 may be wound around a plurality of belts.

In the above-described configuration, the on-site repair is performed as follows.

(1) The mounting plate 2B of the apparatus gantry 2 is mounted on the apron plate P, so that the roll rotating device 1 is installed above the table roll R to be repaired. The installation position may be any place other than the repair location, and the installation is performed so that the center axis of the table roll R and the output shaft of the reduction gear 3B are parallel, and the drive pulley 4 is located above the table roll R.

(2) The belt 5 is wound around the driving pulley 4 and the table roll R. Here, as a method of winding, for example, one end of the linear belt 5 is stuck to the outer peripheral surface of the table roll R using an adhesive tape or a magnet, and the operator turns the table roll R by hand. Thereby, a part of the belt 5 is wound around the table roll R.

Next, the pasted portion is removed, and the ends are connected to each other with a joint fitting 11 to form a ring.
The belt 5 is hung on the driving pulley 4 and tension is applied by a tensioner 6. As a result, a downward force acts on the driving pulley 4, and the apparatus gantry 2 is pressed onto the apron plate P to receive a reaction force, and the roll rotating device 1 is integrated with the table roll R.

(3) In this state, if the electric motor 3A is started to rotate the drive pulley 4 at a desired rotation speed, the rotational driving force of the drive pulley 4 is transmitted to the table roll R by the belt 5, and R rotates at a speed suitable for field repair. Even if the apron plate P is rattled or the position of the drive pulley 4 with respect to the table roll R is displaced due to the movement of the device base 2, the endless belt 5
As a result, the displacement can be absorbed, and the rotation can be reliably transmitted to the table roll R without the drive pulley 4 idling.

(4) Using a suitable welding device, build-up welding is performed on the roll wear concave portion that is continuous in the circumferential direction, and then, the above-mentioned welded portion is ground by using a suitable grinding device.

(5) When the repair is completed, the electric motor 3A is stopped, the tensioner 6 is loosened, and the belt 5 is removed from the drive pulley 4. Next, the joint fitting 11 is removed, and the straight belt 5 is removed from the table roll R having been repaired. The apparatus is moved to the next table roll R, and the above steps are repeated.

Next, the apparatus shown in FIGS. 4 and 5 eliminates the support leg 2A and the mounting plate 2B in the apparatus shown in FIGS. 1 and 2, and directly moves the roll rotating device 1 on the table roll R by the idle roll 20. It can be placed. The idle rolls 20 are arranged in a pair on the left and right sides in the rotation direction so as to be driven and rotated by the rotation of the table roll R, and the pair is arranged on both sides of the apparatus mount 2 in the table roll axial direction.
There are four in total.

That is, support plates 21 are provided on both left and right ends of the apparatus mount 2 in parallel with the table roll axis direction, and idle rolls 20 are rotatably attached to lower portions at both ends of the support plates 21. In addition, an arm 22 that receives a rotational reaction force is protruded from the device base 2.

The arm 22 protrudes from one end of the apparatus gantry 2 so as to correspond to the direction of repair rotation of the table roll R, so that the apron plate P receives a rotational reaction force.

In the above configuration, the operation can be performed in the same manner as described above, except that the method of supporting the apparatus frame 2 is different from the apparatus of FIGS.

Although an example in which the present invention is applied to a roller apron in a rolling line has been described above, it is needless to say that the present invention is not limited to this and can be applied to on-site repair of other roller conveyors. When there is no apron plate, the roll rotating device is supported by the table rolls on both sides, or a reaction force is applied to the table roll on one side.

[0034]

As described above, in the roll rotating device according to the present invention, the detachable belt is wound around the driving pulley of the rotary driving device and the resting table roll to be repaired, and the rotation of the rotary driving device is performed. Since the table roll is transmitted to the table roll via the belt and the table roll is rotated at a speed suitable for repair, the following effects are obtained.

(1) The belt is used to integrate the device with the table roll to be repaired, and the device only needs to be placed on the table roll. No special fixing device is required, and the installation is easy.

(2) Since the rotation is transmitted by the endless belt, even if the position of the drive pulley with respect to the table roll is displaced due to rattling of the apron plate or the like, this is absorbed and the rotational force is reliably transmitted to the table roll. And a stable repair rotation can be obtained.

(3) A relatively simple and compact device can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a roll rotating device according to the present invention.

FIG. 2 is a schematic side view showing the roll rotating device of FIG.

3 (a) is a plan view, FIG. 3 (b) is a partial sectional side view, and FIG. 3 (c) is a transverse sectional view showing an example of a belt used in the present invention.

FIG. 4 is a perspective view showing a modification of the roll rotating device of FIG. 1;

FIG. 5 is a schematic side view of the roll rotating device of FIG. 4;

[Explanation of symbols]

 RT Roller table R Table roll P Apron plate 1 Roll rotating device 2 Device stand 2A Support leg 2B Mounting plate 3 Rotation drive device 3A Electric motor 3B Reduction gear 4 Drive pulley 5 Belt 6 Tensioner 7 Cab tire cord 10 Bolt hole 11 Joint fitting 12 bolt 20 idle roll 21 support plate 22 reaction force receiving arm

Claims (1)

(57) [Scope of request for utility model registration] 1. A roll rotation device for rotating a table roll at a speed suitable for repair when the table roll is repaired on-site, comprising: a device mount installed above a table roll to be repaired; A rotary drive provided above, a detachable belt wound endlessly around a drive pulley and a resting table roll of the rotary drive,
A roll rotation device for on-site repair of table rolls, comprising a tensioner for applying tension to the endlessly wound belt.