JPS61189803A - Conveying device - Google Patents

Abstract

PURPOSE:To load and unload a work in high operating efficiency at a fixed place, by providing a turntable, moving between tracks, to both ends of plural tracks to form a circulating track, and moving plural traveling dollys on the tracks. CONSTITUTION:A traveling dolly 27 is made to stand by on a track 15 situated in front of a rolling mill 11, and a traveling dolly 28, mounting a roll stand 33 thereon, is made to stand by at the left side of the dolly 27. A roll stand 12 is drawn out of the mill 11 and is mounted on the dolly 27. The dolly 27 is traveled and transferred onto a track 26 through a track 23 as well as the dolly 28 is traveled to stop in front of the mill 11. A dolly 29 on the track 26 transfers a roll stand 30 at a transfer area 33, before moving the dolly 27, and is transferred onto a track 16 through the track 23. The dolly 29 is further transferred to a track 15 through a track 24 and is made to stand by at the left side of dolly 28. The operation time required for changing roll stands is reduced by said mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a device that is installed, for example, in a working area of a processing machine and for transporting parts, processed products, etc. of the processing machine.

<Prior art> As a processing machine, for example, the rolls of a steel mill rolling mill are frequently replaced due to wear or changes in rolling shape, etc. In particular, the frequency of weir replacement due to changes in rolling shape is 20 to 30 times per 7 days, which is rather high. In some cases. Conventionally, such roll replacement was carried out as follows. First, as shown in FIG.
Two traveling carts 4 and 5 are placed on top to form a transport device m. Then, the roll stand 06 assembled to the rolling mill 1 is pulled out by the pull-out/pushing means 8 and placed on the traveling trolley 4 attached to the side of the rolling mill 1. The running bogie 5 and the running bogie 4 that are waiting at the left position (A position) of the rolling mill 1 are moved, and the running bogie 5 is moved next to the rolling mill 1, and the running bogie 425-
It is located at the right side position (B position) of the rolling mill 1. Then,
While the roll stand 7 on the traveling carriage 5 is assembled to the rolling mill 1 by the pull-out/pushing means 8, the roll stand on the traveling carriage 4 is transferred by means of a lane (not shown) provided on the ceiling. It is unloaded at the workshop C, and a new roll stand is placed on the traveling trolley 4 and kept on standby. Further, when all the roll stands of the rolling mill 1 are to be replaced, the roll stands 77 are placed on the traveling carriage 5, the traveling carriage 5 is run in the opposite direction to the above, and the traveling carriage 4 is again placed next to the rolling mill 1 to replace the new rolls. While the stand is assembled to the rolling mill 1, the traveling trolley 5 at position A
The upper roll stand 7 is lowered by the crane to the replacement work center C, and the new roll stand is placed on the traveling carriage 5 and left on standby.

<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 the traveling truck at the A position or the B position. 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 time required to change the roll stand is increased, and the operation of the rolling mill 1 is delayed. There was a problem in 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 frequent problem that the sling work 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> A conveyance device according to the present invention has a plurality of tracks laid in parallel to each other, and is provided at both ends of the tracks so as to be able to move between the tracks, and to be continuous with the tracks. The present invention is characterized in that a frame-shaped circulation track is constructed from a turntable having a possible track, and a plurality of running carts are arranged on the track.

Function: By moving the turntable between tracks, multiple traveling carts are circulated in a frame shape, and workpieces are loaded and unloaded onto the traveling carts at a fixed location.

<Example> An example in which the conveying device according to the present invention is applied to a roll stand replacement work of a rolling mill will be described based on FIGS. 1 and 2.

A rolling mill 111 for processing the seamless pipe 10 is assembled with four roll stands 12, and each of these roll stands 12 is assembled with three rolling rolls 12a. The roll stand 12, as shown in FIG.
It is assembled into the rolling mill 11 by engaging with a guide rail lla provided on the rolling mill 11, and by means of a drawer pushing means 13 which engages with a hook 12a provided on each roll stand 12, as will be described later. It is designed to be loaded and unloaded between the rolling mill and the traveling truck. Note that the drawer pushing means 13 is for reciprocating the engaging claw 13ai that engages with the hook 12a by a hydraulic cylinder 13b, but the engaging claw 13a may be moved back and forth by a feed screw mechanism or a rack and pinion mechanism, for example. It may be something that moves back and forth.

As shown in FIG. 1, in front of the rolling mill 11 is an operator's cab 14.
A rolling mill 11. Drawer pushing means 13. The operator's cab 14 is used to centrally operate the turntable, traveling trolley, etc., which will be described later.
It is now possible to do so.

A track 15 consisting of a pair of rails 15a and a pair of rails 16a are provided on the workshop floor between the rolling mill 11 and the operator's cab 14.
Tracks 16 consisting of the following are laid parallel to each other. There are pits 17 at both ends of the 15° 16 track in the workshop.
．． 18 are formed, and turntables 21, 22 are provided in these pins 17, 18, respectively, which can move between tracks 15 and 16 on rails 19, 20. A pair of rails 2 are provided on the upper surface of these turntables 21 and 22, respectively.
When the tracks 23 and 24 consisting of 3a and 24a are laid and the turntables 21 and 22 are driven by drive means (not shown) such as drive motors, the tracks 23 and 24 become the tracks 15 and 16, respectively. It is designed so that it can be selectively continued. Furthermore, a pair of rails 25a are provided on each side of the pit 17 in the workshop.

Tracks 25, 26 consisting of 26a are laid parallel to each other, such that these tracks 25, 26 can each be connected via the track 23 to the tracks 15, 16.

Therefore, the above orbits 15, 16.23, 24°25.26
The three traveling trolleys 27°28.29 placed above can travel on the circular track consisting of tracks 15, 16, 23.24 and can also move on the track 25.26. It looks like this. These traveling trolleys 27, 28.2
9 can be driven by equipping the traveling trolleys 27, 28, 29 with a drive motor and supplying power to this with one type of battery or one type of trolley, or by not equipping the traveling trucks 27, 28, 29 themselves with a driving motor. The traveling bogie is engaged with chains, gears, and rubber wheels installed on the track side, and these chains, etc.
This is done by making it driveable.

Further, a transshipment workshop 32 where replacement roll stands 30 are stored is installed near the side of the track 26 in the workshop, and a crane (not shown) is installed above the transshipment workshop 32 and the track 26. is provided so that roll stands can be transferred between the traveling carriage located on the track 26 and the & change workshop 32.

A roll stand replacement operation using the conveying device having the above configuration will be explained.

First, the traveling cart 27 is placed on the track 15 in front of the rolling @ 11 in preparation for pulling out the roll stand 12 currently in use, and the roll stand 33 to be used next is
The traveling carriage 28 carrying the is placed on the left side of the traveling carriage 27 in FIG. Here, the track 15 is provided with a stopper 34 that is driven up and down by a fluid pressure cylinder or the like and can engage the wheels of the traveling vehicle.
It can be positioned and held in front of the rolling mill 11 at the .

Next, the roll stand 12 is pulled out from the rolling mill 11 by the pull-out/pushing means 13 and placed on the running carriage 27, and the running carriage 27 is caused to run rightward in FIG. At the same time, the carriage 28 is moved to a position in front of the rolling mill 11 and stopped. Here, before the traveling carriage 27 is moved, the traveling carriage 29 on the track 26 first uses the roll stand 30 of the changing work area 32 for the carriage 8, and then exchanges the roll stand 9 for the roll stand 30 and moves it through the track 23. The carriage 29 is then moved onto the track 16 via the track 24 onto the track 15 and waits on the left side of the carriage 28. Since the roll stand can be placed in the vicinity of the rolling mill 11, the operating efficiency of the rolling mill can be improved by shortening the replacement work time.

Next, the traveling bogie 27 moved onto the track 26 as described above.
In addition to carrying out roll stand transshipment work, rolling mill 11
The roll stand 33 on the traveling trolley 28 located in front of the
is assembled into the rolling mill 11 by the pull-out/push means 13. In this way, since the roll stand transshipment work is performed on the track 26 away from the rolling mill 11, the sling work can be performed safely. Furthermore, since the track 26 and the transshipment work area 32 can be installed adjacent to each other, the transportation distance of the crane is shortened, the transshipment operation time is shortened, and the crane route does not obstruct the view of the operator's cab 14. f! There is no possibility that the setting of 1vc would interfere with the operation of the rolling mill 11. Note that the track 25 is extended to the roll polishing field, and when it is necessary to polish the rolls on the roll stand, the transport system # is configured to operate the turntable 21 to move the traveling carriage 27 from the track 23 to the track 25. You can set all the settings.

That is, according to the conveyance device according to the invention, the work of replacing the roll stand can be performed efficiently by repeatedly performing the series of operations described above.

Although the above embodiment uses three traveling carts, the number may be set as appropriate depending on the purpose of the conveying device, frequency of use, etc. Furthermore, it goes without saying that the conveying device according to the present invention is not limited to being used for roll stand replacement work, but can be used for other unique uses.

<Effects of the Invention> According to the present invention, since the traveling carriage is circulated in a frame shape, it is possible to efficiently transport workpieces such as roll stands, and the work of loading and unloading the workpieces onto the traveling carriage can be carried out using a rolling mill or the like. Work safety can be ensured because it can be performed at a location away from the processing machine.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall configuration of a conveyance device according to an embodiment of the present invention, FIG. 2 is a perspective view showing the relationship between a roll stand and a drawer pushing means, and FIG. 3 is an overall view of a conventional conveyance device. FIG. 2 is a perspective view showing the configuration. In the drawing, 15.16 and 23.24 are tracks, 21.22 is a turntable, and 27.28.29 is a traveling bogie. Figure 2

Claims (1)

[Claims] 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 can be continuous with the tracks. , A transport device characterized in that a plurality of traveling carts are arranged on the track.