JPS62222973A - Belt folding device - Google Patents

Abstract

PURPOSE:To aim at safety operation and improvement in efficiency at limited manpower, by mounting a belt drum on the portal bridge installed in an upper part of a traveling truck, while setting a belt end to a delivery roller, and making its folding length so as to be detected and cut automatically as delivering the belt. CONSTITUTION:After a belt drum 15 is set to on top of a drum bridge block 16, an end of a belt 1 is drawn out and inserted into space between delivery and driven rollers 2 and 2a, adjusting a takeup 18 and pressing the roller 2a to it, and the belt 1 is delivered till its end comes into contact with the bottom of a screen 10, thus starting preparations are all over. Next, the roller 2 is driven and simultaneously a motor a traveling truck 8 is rotated clockwise and the belt 1 is delivered to the left, and if a limit switch 25 of the truck 8 kicks an L1 left striker 26 of a portal bridge 6, the truck 8 is once stopped, changed over to a reversion, whereby the truck 8 travels to the right so that the belt 1 is safely folded with an (a) point as a folding point. Then, after detection of folding requisite length of the belt 1 from rotational frequency of the roller 2, the truck 8 is stopped, and the belt 1 is cut by a cutter truck 21, extruding it with a pallet truck.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a belt folding device when replacing a conveyor belt used for conveying raw materials for steel manufacturing and the like.

[Conventional technology]

When replacing a conveyor belt that is used to transport raw materials for steelmaking, etc., the replacement belt is generally packed in a drum or folded state.

When replacing the drum, the drum cannot be placed on the conveyor frame due to the strength of the conveyor frame, so it is placed on the ground as shown in Figure 6. It takes a lot of time to remove and install peripheral equipment such as rollers, and if the conveyor is located at a high place, the work of joining and retracting the old bell (la) and the replacement bell (b) lb in section A becomes even more difficult. It becomes difficult. In addition, if there is insufficient replacement length for one drum roll, the belt for two drum rolls should be spliced in advance at another location in order to shorten the belt splicing work time on site. This situation makes it even more difficult to carry out on-site construction work.

On the other hand, when replacing the replacement belt 1b in a folded state, the load on the belt is distributed over the folded length of the belt, making it possible to place it on the conveyor frame, as shown in Figure 7. It is being replaced. If this means is used, the range for removing peripheral equipment such as the carrier roller of section B may be reduced, and the belt replacement work time can be significantly shortened compared to the case of a drum state. Furthermore, it is not affected by the height of the conveyor position.

Therefore, the belt is often replaced in a folded state.

[Problem that the invention seeks to solve]

Conventional belt folding means, as shown in Fig. 8, involves pulling the belt upward from a belt drum using a lifting machine.
When lowering it to the ground, the worker folds it, but it is extremely dangerous as they have to get close to the suspended load and touch it directly with their hands. There were problems in that it required a name and that the work took a long time.

Therefore, the present applicant proposed Utility Model Application Laid-Open No. 59-179856 as a solution to this problem.

This technique uses a technical method in which the belt drum is placed on the ground and the belt is sandwiched between a pair of rollers on a traveling carriage while being unwound. In this method, too, the end of the belt is first set on the rollers. The work involved was difficult, and in some cases required lifting equipment.

The present invention solves these problems and provides a belt folding device that can be operated safely by a small number of people and has high working efficiency.

[Means for solving problems]

The present invention solves the above-mentioned problems and employs the following technical means.

■A traveling trolley that automatically reciprocates in a predetermined section on the rail, equipped with a pair of belt unwinding rollers that unwind the belt wound around the drum, and a detection device that detects the unwinding length of the belt from the number of rotations of the rollers. A gate-shaped frame that is mounted and supported on the upper stage and has running bogie rails in the middle. ■A gate-shaped frame that is installed on the lower stage of the gate-shaped frame and folds and stores the belt fed out from the belt feeding roller and runs on the rails on the ground. A belt folding device was constructed with the above devices.

[Effect]

1) By placing the belt drum on a gate-shaped frame provided above the traveling carriage, it became easier to initially set the end of the belt on the feeding roller on the traveling carriage. That is, there is no need to first pull up the end of the belt using a lifting machine or the like as in the conventional method, and the belt can be set on the feeding roller using natural gravity.

2) While the feeding roller feeds out the belt, the traveling trolley automatically reciprocates over a predetermined section, making it possible to automatically fold the belt into predetermined lengths.

3) Belt cutting, which used to be a heavy labor, has been automated by a function that detects the required folded length of the belt and an automatic belt cutting device.

As described above, the belt folding work can be carried out safely and in a short time, and it is also possible to save labor.

〔Example〕

An embodiment of the present invention will be described in detail based on the drawings. 1st
2, 3 and 4 show the belt folding device of the present invention. Figure 1 is a front view, Figure 2 is A- of Figure 1.
It is a view from arrow A.

The embodiment is equipped with a pair of feeding rollers 2 and driven rollers 2a to feed out the belt 1, and by driving a traveling motor 3, the belt 1 is laid in the middle of a gate-shaped frame 6 via a shaft 4 and wheels 5. A traveling trolley 8 automatically reciprocates on a predetermined section of the rail 7''-, and the lower part of the gate-shaped frame 6 is equipped with a screen 10, a hanging piece 11, and a handle 12, and can freely run on a rail 13 laid on the ground L. Pallet truck 1 that can be moved to
4, a drum mount 16 for mounting and supporting the belt drum 15 disposed at the upper stage of the gate-shaped frame 6, and a belt cutting device 17 disposed at the middle lower part of the gate-shaped frame 6. The rollers of the traveling carriage 8 are composed of a feeding roller 2 driven by a drive motor 3a and a driven roller 2a which is pressed against the feeding roller 2 by a take-up 18 and rotates as a result.

Further, as shown in FIGS. 3 and 4, the belt cutting device 17 is fixedly installed at the bottom of the middle stage of the circular frame 6, runs horizontally in the width direction of the belt 1 by a guide 19, and has a cutter equipped with a cutter 20. A carriage 21 and a beam 23 that can be rotated by a cylinder 22 to support the reaction force of the blade 20 are provided.

In this embodiment, the pallet truck 14 is configured to be pushed and moved by a worker, but it may be moved by a motor.

Next, the operation of the device of the present invention will be explained.

First, the belt drum 15 is set on the drum mount 16- by a lifting machine (not shown), and then the end of the belt 1 is pulled out and inserted between the feeding roller 2 and the driven roller 2a, the take-up 18 is adjusted, and the driven roller 2a and while driving the feed roller 2 in increments, the end of the bell) 1 is shown in Fig. 5 (
As shown in a), the preparation for starting is completed when the belt is let out until it comes into contact with the bottom of the screen IO.

Next, while driving the feeding roller 2, the traveling trolley 8
When the motor is driven to rotate in the forward direction, the belt 1 is fed out to the left from the starting point as shown in FIG. A 1 digit L1 When the left striker 26 is kicked, the traveling trolley 8 is temporarily stopped, and this time it switches to reverse drive, and the traveling trolley 8 runs to the right as shown in FIG. 5(b), so that the belt 1 is at point a. will be folded using the bending point.

Further, the traveling trolley 8 moves to the right and goes to the limit switch 2.
5 kicks the R1 right striker 27, the traveling trolley 8 temporarily stops and then switches to normal rotation drive, and as shown in FIG. It is folded as a point, and when the traveling trolley 8 moves to the left, it becomes L.
2. Kick the left striker 26 and stop it once.

Thereafter, the drive is changed to reverse rotation in the same manner, and the traveling truck 8 runs to the right, and the belt 1 is folded at point b as the bending point. By repeating the above operations, the belt 1 is sequentially folded as shown in FIG. 5(C).

As shown in FIG. 5(C), the bending points of the left and right belts 1 are:
It is necessary to bend point B at a position that is approximately 150 to 200 mm inward from point A, and further, to shift point C approximately 150 to 200 mm inward from point B. This position control is performed by the operator visually pressing a push button. This can be done manually or automatically controlled by a sequencer.

After detecting the required folding length of the bell) 1 from the rotation speed of the feeding roller 2, the traveling cart 8 is stopped, the cylinder 22 is activated, the beam 23 is pressed against the bell) 1 surface, and the cutter cart 21 is run. After cutting the belt 1, the pallet truck 1
4 is pushed by the worker to move it outside the gate-shaped frame 6, and the lifting machine (
The belt folding operation is completed by loading the pallet 24 onto a hand-limbed truck (not shown).

〔Effect of the invention〕

According to the belt folding device of the present invention, belt folding work that conventionally required four workers can be reduced to two workers, safety is improved, and work time is effectively shortened.

[Brief explanation of drawings]

FIG. 1 is a front view of a belt folding device according to an embodiment of the present invention, FIG. 2 is a view taken along the line A-A in FIG. 1, FIG. 3 is a sectional view of a belt cutting device, and FIG. 5(a), 5(b), and 5(C) are illustrations of the folding process of the belt. Fig. 7 is an explanatory diagram when the packaging is carried out in a drum state; Fig. 7 is an explanatory diagram when the conventional replacement belt is packed in a folded state; Fig. 8
The figure is an explanatory diagram of a conventional belt folding operation.

Claims (1)

[Claims] 1. A traveling trolley that automatically reciprocates in a predetermined section on a rail, which is equipped with a pair of belt feeding rollers that feed out a belt wound around a drum, and a detection device that detects the feeding length of the belt from the number of rotations of the rollers; A gate-shaped frame in which the drum is mounted and supported on the upper stage and the traveling bogie rails are arranged in the middle stage, and a gate-shaped frame arranged in the lower stage of the gate-shaped frame to fold and store the belt fed out from the belt feeding roller, and A belt folding device comprising a pallet truck that travels on a rail, and a belt cutting device disposed between the belt feeding roller and the pallet truck.