JPH0366042B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is provided, for example, in the workshop of a processing machine,
This invention relates to a device for transporting parts, processed products, etc. of this processing machine.

<Conventional technology> As a processing machine, for example, the rolls of a steel rolling mill are frequently replaced due to wear or changes in rolling shape, and in particular, the frequency of replacement due to changes in rolling shape is approximately 20%.
It can be quite high, ~30 times/day. Conventionally, such roll replacement has been carried out as follows.

First, as shown in FIG. 4, a track 3 consisting of a pair of rails 2 is laid in the work area of the rolling mill 1, and two traveling carts 4 and 5 are placed on this track 3 to constitute a conveying device. . Then, the roll stand 6 assembled to the rolling mill 1 is pulled out and the pushing means 8
The carriage 5 and the carriage 5 are pulled out and placed on the carriage 4 which is placed next to the rolling mill 1, and the carriage 5 and the carriage are placed on the rolling carriage 4 which is placed next to the rolling mill 1. Run 4 and
The traveling carriage 5 is placed next to the rolling mill 1, and the traveling carriage 4 is positioned at the right position (position B) of the rolling mill 1. Next, the roll stand 7 on the traveling carriage 5 is assembled to the rolling mill 1 by the pull-out and pushing means 8, while
The roll stand on the traveling truck 4 is lowered to the transshipment work area C by a crane (not shown) installed on the ceiling, and a new roll stand is placed on the traveling truck 4 and kept on standby. Further, when replacing the roll stand of the rolling mill 1, place the roll stand 7 on the traveling carriage 5, run it in the opposite direction to the above, bring the traveling carriage 4 next to the rolling mill 1 again, and replace the new roll. While assembling the stand to rolling mill 1,
The roll stand 7 on the traveling carriage 5 at the position is lowered to the transshipment work area C by the crane, and a new roll stand is placed on the traveling carriage 5 and made to stand by.

<Problems to be Solved by the Invention> When replacing a roll stand using a conventional conveying device, the roll stand had to be transferred to a traveling cart at position A or position B. As shown by the dotted line in Figure 3, the route of the crane from the transshipment work area C to each traveling truck changes each time, and the transportation distance by the crane becomes longer, the reloading work of the roll stand takes longer, and the operation of the rolling mill 1 becomes shorter. There was a problem that efficiency was also reduced. Furthermore, since a roll stand suspended from a crane passes in front of the operator's cab 9 disposed in front of the rolling mill 1, there is a problem in that the operation of the rolling mill 1 is hindered. Furthermore, since positions A and B, where the traveling carriages are located, are near the rolling mill 1, there is a problem in that the slinging operation is dangerous.

The present invention was made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a highly efficient conveyance device that reasonably solves the above-mentioned problems.

<Means for Solving the Problems> The configuration of the conveyance device of the present invention that achieves the above object includes a plurality of tracks laid parallel to each other, and a transport device provided at both ends of the tracks to move between the tracks. The conveying device comprises a frame-shaped circulating track including a turntable having a track that can be continuous with the track, and a plurality of running carriages arranged on the track, the carrying unit having an engaging portion on the running carriage. Drive rotations that extend along the running direction, are disposed along the track and spaced from each other at intervals equal to or less than the length of the engaging portions, and engage with the engaging portions to drive the traveling bogie. The present invention is characterized in that it is provided with a body and further provided with a motor that rotates each of the driving rotary bodies.

<Function> If the turntable is moved between tracks with the running carriage on the turntable, the running carriage will be transferred onto the parallel tracks, and the drive rotating body will be moved to the engagement part of the running carriage. When engaged and rotated, the traveling carriage will travel on the track. Furthermore, since the distance between the drive rotors is less than or equal to the length of the engaging portion, if any of the drive rotors stops rotating, the traveling carriage will stop on the spot.

<Example> An example of the present invention is shown in FIGS. 1 to 3. The embodiment shown in the figure is applied to roll replacement of a rolling mill 1. That is, in the working area of the rolling mill 1, tracks 10 and 11 consisting of a pair of rails are laid parallel to each other, and grooves are dug in the working area at both ends of the tracks 10 and 11, and in these grooves, the tracks are A pair of rails 1 in the direction perpendicular to 10 and 11
2,13 are installed. This rail 12,1
Turntables 14 and 15 that move between the tracks 10 and 11 are movably mounted on the respective tracks 10 and 11, and a pair of rails that can be continuous with the tracks 10 and 11 are provided on the upper surfaces of the turntables 14 and 15. Trajectories 16, 17 consisting of
has been installed. These tracks 16 and 17 are parallel to the track 1 as the turntables 14 and 15 move.
Since it continues to either 0 or 11, the orbit 10,
11 will be indirectly continuous via orbits 16 and 17. In other words, orbit 10, 11, 1
6 and 17 constitute a frame-shaped circulation track. Furthermore, on the right side of the tracks 10 and 11 in FIG. are each turntable 17
It is designed to be continuous with the orbits 10 and 11 via the orbit 17 of. On the track 10 is a running bogie 2
0 and 21 are placed thereon, and a running bogie 22 is placed on the lead-in track 19, and these running bogies 2
0, 21, and 22 all have the same structure, and the roll stand 6 that has already been used or is scheduled to be used in the future can be placed thereon. For example, as shown in FIGS. 2 and 3, wheels 23 are attached via wheel bearings 24 to the front, rear, left, and right sides of the bottom of the running cart 20, and the wheels 23 are attached to the center of the bottom in the running direction, that is, in the front-rear direction. A rack 25 is provided as an engaging portion extending along the line. The traveling carriage 20 is engaged with this rack 25.
The pinion gear 26 serves as a driving rotary body for driving the traveling carts 21 and 22 (the same applies to the traveling carts 21 and 22).
27, 28, 29, 30, 31, 32, 33, 3
4, 35 are orbits 10, 11, 16, 17, 18,
19, and these pinion gears 26
A motor 36 is connected to each of the motors 25 to 25 so that the motors 36 can be driven and rotated individually. pinion gear 26
As for the arrangement of the pinion gears 26 to 35, as shown in FIG.
However, there are pinion gears 27, 28, 29 on the track 10.
However, a pinion gear 30 is arranged on the retractable track 18, pinion gears 31, 32, 33 are arranged on the track 11, a pinion gear 34 is arranged on the track 17 of the turntable 15, a pinion gear 35 is arranged on the retractable track 19, and which pinion gear 26 is arranged. .about.35 are also arranged to protrude from the floor surface so as to engage with the rack 25. The interval _L2 at which the pinion gears 26 to 35 are arranged along the running direction is equal to or less than the length of the rack 25,
Therefore, when the driving rotation of any of the pinion gears 26 to 35 is stopped, the running of the traveling vehicles 20 to 22 is stopped.

Furthermore, in this embodiment, in order to make the traveling vehicles 20 to 22 travel quickly, a special pinion gear 2 is provided.
Pinion gears 37, 3 are located adjacent to 7, 28.
8 is added, but this pinion gear 37,3
8 is not necessarily necessary. In addition, so that the traveling carriage can stop in line with the center of the rolling mill 1,
At that position on the track 10, a bogie positioning device 39, which is a hardware shaped like a V-shape in which car stops are placed on the left and right sides of the wheels, is supported by a lifting means 40 such as a hydraulic cylinder. Normally, the cart positioning device 39 is kept in a lowered state by the lifting means 40, and when the traveling cart stops in front of the rolling mill 1, the positioning device 39 is raised by the lifting means 40, and the ribs of the wheels are moved from the right and left. The stop position is made accurate by reading the information.

The conveyance device of this embodiment having the above configuration is used as follows. First, as shown in FIG. 1, the traveling cart 20 is made to stand by in front of the rolling mill 1 in the direction in which the rolls are pulled out, and the ground traveling cart 21 is placed at a position A adjacent thereto to a roll stand (not shown) to be used for the next rolling. ) is placed on standby while the remaining carriage 22 unloads the roll stand (not shown) used in the previous rolling on the pull-in track 19, and then unloads the roll stand (not shown) used in the previous rolling. (not shown) is being loaded. When rolling is completed in this state, the roll is pulled out from the rolling mill 1 by a pushing/drawing means (not shown) comprising, for example, a hydraulic cylinder, a feed screw, or a rack-and-pinion telescopic arm, and placed on the traveling carriage 20. place Thereafter, the traveling carts 20 and 21 are simultaneously moved to the right in FIG.
while moving the carriage 22 from the lead-in track 19 to the track 1 via the track 17 of the turntable 15.
1 up and to the left in the figure. Next, the roll stand loaded on the traveling carriage 21 is pushed by the pushing/drawing means and attached to the rolling mill 1, and rolling is restarted. Subsequently, the turntable 13 is moved to the upper left in FIG. 1 to connect the track 10 and the track 17, and the traveling carriage 20 is moved to the turntable 15.
The turntable 15 is moved to the lower right in the figure and the track 17 is moved.
and the pull-in track 19 are connected, and the traveling trolley 20 is moved to the pull-in track 19. On the other hand, after moving the turntable 16 to the lower right in FIG. 1 so that the tracks 11 and 16 are continuous, the traveling trolley 22 is placed on the turntable 16, and the turntable 16 is moved to the upper left in the figure. The carriage 2 is moved to connect the track 16 and the track 10, and
2 to the right to position A adjacent to rolling mill 1.
to stop. After this, the above-mentioned procedure is repeated.

In addition, in the above-mentioned procedure, the traveling carts 20 to 2
2 runs with pinion gear 26-35 and easy 25
This is done by engaging the At this time, pinion gear 2
The interval L ₂ between 6 to 35 is the length of rack 25
Since it is shorter than L ₁ , when the adjacent pinion gear is rotated, the rack will engage with the adjacent pinion gear just before the carriage moves and the rack disengages from one pinion gear. Therefore, the traveling carriage can be made to travel one after another, and when a certain pinion gear is stopped, the traveling of the traveling carriage is stopped at that spot.

The conveying device of the present embodiment described above has the following effects.

(1) A transshipment workshop will be established near the lead-in track 19,
By reciprocating the crane between this work place and the pull-in track 19, the roll studs can be reloaded onto the traveling truck, so that the distance traveled by the crane is the shortest and its course remains constant. For this reason, the working time is shortened, and the effect is great in cases where there are sometimes four roll studs as shown in the figure, but 24 to 28 stretch reducers and the like. Furthermore, it is possible to install the transshipment work area at a desired location and extend the lead-in track 19 to this location, which is advantageous in terms of safety. Since it moves, it does not interfere with the driver and is safe.

(2) Since there are three running carts, the roll studs to be used for the next rolling can be kept in standby near rolling mill 1, so there is no need to stop the rolling mill during the preparation time. . Furthermore, if the number of traveling carriages is four, the roll studs to be used for the next rolling can be kept on standby.

(3) It is possible to extend the track or take over by another means midway, and directly connect it to the re-sharpening field and automate it.

(4) If a roll stand that has been pulled out is to be used again in the near future, it can be kept on standby in orbit. During this time, two trolleys will be used, and one
The platform will be kept on standby in orbit until needed.

Incidentally, if there are four running bogies, and if the fourth running bogie is placed on the lead-in track 18, the fourth running bogie can be made to run in the same way as the other running bogies by the above-mentioned drive means. However, if it interferes with running, it is necessary to install a lead-in track that connects to the track 16 of the turntable 14, or to replace the track 1.
It is better to add a trajectory parallel to this on the side of 0 and 11.

<Effects of the Invention> As described above in detail, according to the conveying device of the present invention, the traveling carriage is circulated in a frame shape, so that workpieces such as roll stands can be transported efficiently, and the traveling carriage of the workpiece can be transported efficiently. Since the loading and unloading work can be performed at a location away from processing machines such as rolling mills, work safety can be ensured. Moreover, since no electric motor is built into the traveling cart, power supply and operation are easy. In other words, when power is supplied using a cable, etc., the cable wraps around the trolley, and when power is supplied using a trolley, there is a risk of electric shock to nearby workers, while when the electric motor is driven by a battery, it is difficult to replace the battery. Alternatively, operations such as charging are required, whereas the present invention does not cause such inconveniences. More importantly, there is no need for a driver to ride on each trolley, and there is no need for individual remote control, so costs are extremely low.

[Brief explanation of drawings]

1 to 3 relate to one embodiment of the present invention, in which FIG. 1 is an overall perspective view thereof, FIG. 2 is an explanatory diagram showing the relationship between the arrangement of pinion gears and the length of the rack, and FIG.
The figure is a sectional view taken along line A--A in FIG. 2, and FIG. 4 is a perspective view of a device used for exchanging roll stands of a conventional rolling mill. In the drawing, 10, 11, 16, 17 are orbits, 1
4 and 15 are turntables, 18 and 19 are lead-in tracks, 2
0, 21, 22 are running carts, 25 is Rack, 26
-35 is a pinion gear.

Claims (1)

[Claims] 1. A frame-type circulation track is constructed from a plurality of tracks laid parallel to each other and turntables provided at both ends of the tracks and having tracks that can move between the tracks and be continuous with the tracks. In addition, the conveyance device includes a plurality of traveling carts arranged on the track, wherein the engaging portions of the traveling carts extend along the traveling direction, and the lengths of the engaging portions are extended along the track and mutually. Providing a driving rotating body that is arranged at the following intervals and that engages with the engaging portion to drive the traveling truck,
A conveyance device further comprising a motor that rotates each of the drive rotors.