JPS6154685B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a flange overlap change device at the head of a pivoted bucket conveyor.

FIG. 1 shows the overall path of a pivoted bucket conveyor. Of course, the path of the pivoted bucket conveyor can be changed freely and is not limited to this embodiment, but here, a path including an ascending and descending portion will be described. As shown in FIGS. 2 and 3, a bucket 3 is pivotably supported at a constant pitch by a common roller shaft 2 on a pair of endless drive chains 1, 1, and a low horizontal movement section L
At this point, the objects S to be transferred placed in the bucket 3 are pulled up to a high place, the bucket 3 is overturned in the horizontal movement section H at the high place, and the objects S to be transferred are discharged to the hoppers 4, 5, etc.

In this case, flanges 6 and 7 are provided at the front and rear of the bucket 3 so that the objects to be transported can be continuously loaded, and the flanges 6 and 7 of adjacent buckets 3 are overlapped with each other. However, when the bucket 3 goes up around the sprocket, for example at the positions of the sprockets 8, 9, and 10 in FIG. 1, the rear flange 7 of the leading bucket 3 overlaps the front flange 6 of the trailing bucket 3. Yes, but Bucket 3
When the sprockets descend around the sprockets, for example, at sprockets 11, 12, and 13, a flange overlap state opposite to that described above appears. Therefore, when the bucket rotates around two sprockets and goes down, moves horizontally, and goes up, or goes up, moves horizontally, and goes down, it is necessary to change the flange overlap state. In the latter case, it is convenient to change the overlap of the flanges by using the action of overturning the bucket 3 at the position of the hopper 5 to discharge the transferred material.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for changing the flange overlap at the head of a pivoted bucket conveyor, which is capable of changing the flange overlap.

Embodiments of the present invention will be described below with reference to the drawings.

The bucket 3 is provided with buckets 3 at the bottom of both outer end surfaces of the bucket 3 in order to maintain good balance and overturn the bucket at the place where transferred materials are discharged.
One guide roller 14, 15, respectively, at a position equidistant from the vertical center plane perpendicular to the direction of movement of
is pivoted.

In the present invention, the flanges 6 and 7 are set at the head of the bucket conveyor, that is, at the position of the head sprocket 11, using guide rollers 14 and 15, when the bucket returns to the horizontal position after tipping forward to discharge the conveyed material. Overlapping is the opposite of the overlapping that occurs. In FIG. 5, it is assumed that the guide rollers 14 and 15 are located on the front side and the back side of the bucket bag 3, respectively. The pivoted bucket conveyor is entirely surrounded by an outer casing 16, and in the horizontal movement section H, the rollers 18 of the chain 1 are supported by rails 17 fixed to the outer casing 16. The guide roller 14 is attached to the fixed support 19.
The guide rail 20 and guide roller 1 that engage with
Attach the guide rails 21 and 22 that 5 engages with.

The guide rail 20 extends from above the hopper 5 to the sprocket 11, and has a trapezoidal part 23 above the hopper 5 and a flat part 24 lower than this, and the end of the flat part 24 is a tapered part with a slightly inclined upper surface. 25
form.

The guide rail 21 has an upward slope 26 extending rearward from the trapezoidal portion 23. Guide rail 2
2 will be described later.

When the bucket belt 3 turns around the sprocket 10 and enters the horizontal movement section H, the flanges 6, 7 are such that the rear flange 7 of the front bucket belt 3 overlaps the front flange 6 of the rear bucket belt 3. Bucket 3
When the bucket enters above the hopper 5, the guide roller 15 rides on the slope 26 of the guide rail 21, causing the bucket 3 to tilt clockwise in FIG. 5 about the roller shaft 2. Guide roller 1
Since the roller 5 is located behind the roller shaft 2, the tilting movement is performed relatively slowly. The guide roller 14 rides on the slope 27 of the trapezoidal portion 23 after passing directly under the roller shaft 2 due to the tilting. As a result, the bucket 3 is further tilted clockwise, and when the guide roller 14 rides on the top surface of the trapezoidal part 23,
The bucket 3 tilts forward by more than 90 degrees and discharges the transferred material S into the hopper 5. In this case, if the bucket 3 is tilted too much and there is a risk of it falling forward, a fall prevention rail 28 with which the guide roller 15 engages is provided above the hopper 5 to prevent it from falling.

The bucket 3 that has been discharged is moved to the guide roller 14
The guide rail 2 moves forward while maintaining a tilting angle in contact with the flat part 24 so that there is no risk of tipping over, and the tilting angle gradually decreases at the tapered part 25 so that the guide roller 15 smoothly takes over the maintenance of the tilted posture of the bucket 3.
It approaches 2.

When the bucket 3 begins to descend along the sprocket 11, the guide roller 14 is disengaged from the tapered portion 25, the guide roller 15 engages on the highest portion 29 of the guide rail 22, and then the steep slope 3
By descending in contact with 0, the bucket 3 returns to the horizontal position while descending from the position a to the position b in FIG. That is, when the leading bucket cart 3 reaches position b, the trailing bucket cart 3 is at position a, and when descending from now on, the trailing bucket cart 3 rotates without hitting the leading bucket cart 3 and returns to the horizontal position.

At the bucket position c, where the guide roller 15 comes off the steep slope 30, the direction of rotation of the guide roller 15 about the roller axis 2 almost coincides with the direction of the steep slope 30, so the guide roller 15 suddenly changes the tilt angle of the bucket. I smoothly left the steep slope 30 without any trouble. Therefore, the flange overlap of the bucket belt 3 can be changed smoothly within a range where the rotation angle around the head sprocket 11 is small.

In order to prevent the bucket 3 from shaking when it moves from the c position to the b position where the tilt angle is zero, the anti-sway rail 3 is installed.
1 is provided to regulate the guide roller 14. As a result, the bucket 3 hardly shakes at the d position.

In order to tilt the bucket to the discharge position, it is possible to use one guide roller instead of the two guide rollers as described above, but in this case, the guide roller has a very large diameter. Due to the weight imbalance of the bucket cart, the tilting motion and operation of the pivoted bucket cart conveyor become unsmooth.
In contrast, in the present invention, a pair of guide rollers are pivotally supported on both end surfaces of the bucket, one at a time shifted back and forth, so the guide rollers are small and lightweight, and the weight balance of the bucket is good, resulting in smooth movement. be.

In addition, the present invention has two guide rollers successively engaged with the guide rail to sufficiently tilt the bucket to enter the head sprocket, and then return it to a horizontal position after entering, thereby eliminating the overlap of the flanges from the head sprocket. In addition to changing the bucket so that it can rotate around the sprocket, the rotation angle for the bucket belt to return to the horizontal position after going around the head sprocket is minimized, and the rocking of the bucket belt after returning to the horizontal position is minimized. It has a special effect.

In addition, in the explanation of the present invention so far, we have described a flange overlap changing device that also has a discharge function to the hopper 5, but if there is no forced discharge at this position, the trapezoidal part 23 of the guide rail 20 is unnecessary. A flat top surface having only a part of the upward slope 27 may be used. Moreover, the fall prevention rail 28 is also unnecessary.

[Brief explanation of the drawing]

Fig. 1 is an overall route diagram of the pivoted bucket conveyor of the present invention, Fig. 2 is a partial plan view showing the bucket support structure, Fig. 3 is a partial elevational view, and Fig.
1, FIG. 5 is a partial cross-sectional view taken along the line B--B in FIG. 4, and FIG. 6 is a partial cross-sectional view taken along the line C--C in FIG. 1... Drive chain, 3... Bucket, 6,7
...Flange, 11 ...Head sprocket, 1
4, 15... Guide roller, 20... Second guide rail, 21... First guide rail, 22...
...Third guide rail, 23...Trapezoidal part, 24
...Flat area, 30...Steep slope.

Claims (1)

[Scope of Claims] 1. A pivoted bucket which has flanges that overlap each other in a horizontal movement section at the front and rear of a large number of buckets whose end surfaces are rotatably supported with a constant pitch on a pair of parallel drive chains. A flange overlap change device for a bucket conveyor, in which one guide roller is pivotally supported on both end faces of each bucket, and the positions of the drive chain are shifted from each other in the horizontal direction, and the drive chain moves from horizontal movement to downward movement. A first guide rail that engages with a guide roller at the rear in the moving direction and tilts the bucket cart until the guide roller at the front in the moving direction is almost directly below the bucket pivot axis, in a horizontal movement section in front of the sprocket; A second guide rail engages with a guide roller at the front in the direction to maintain a constant tilting angle of the bucket, and a second guide rail engages from the top of the head sprocket to a guide roller at the rear in the direction of movement to restore the bucket to a nearly horizontal position. A device for changing the flange overlap at the head of a pivoted bucket conveyor, characterized in that a third guide rail having a steep slope is provided. 2. Claims in which the direction of the steep slope of the third guide rail substantially coincides with the direction of the rotational movement of the guide roller about the pivot axis of the bucket at the position where the rear guide roller in the moving direction is removed from the steep slope. A device for changing the flange overlap at the head of the pivoted bucket conveyor according to claim 1.