JPH056256Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to an apron conveyor that connects a large number of links each having an apron with a bottom plate and side plates, and is particularly suitable for upwardly inclined conveyance of scattered materials such as powder and granules. The present invention relates to a suitable apron conveyor.

PRIOR TECHNOLOGY Leakage prevention means prevents the spread material from leaking from the gap between the overlapping portions of the front and rear ends of the apron when the spread material is conveyed uphill by an apron conveyor.
For example, it is disclosed in Japanese Unexamined Patent Publication No. 101308/1983, and its outline is shown in FIGS. 2a, b, and c.

That is, the apron E attached to each link 1a, 1b... of the apron conveyor chain 1
The bottom plate E ₁ , E ₂ ... and both side plates S ₁ −S ₁ , S ₂ −S ₂ ...
..., and each link 1a, 1b... is bendably connected by a connecting pin P, and the apron bottom plate
The front end overlapping portions of E ₁ , E ₂ . It has an arcuate outer surface 5 centered on the connecting pin P that follows the rotation locus of the free tip 4' of the portion 4, a groove 6 continuous to the arcuate outer surface 5, and an upright free end 7.

When the links 1a and 1b are not bent around the connecting pin P and have a bending angle of zero, that is, when they are on the conveyance path with an upward slope angle α in the state shown in FIG. 2a, the apron bottom plate Since the free tip 4' of the free end leg in the front end overlap part of _E2 is in contact with the base end of the circular arcuate outer surface 5 of the apron in the front position, the overlap part of the apron end part, that is, the flat top part 2 and the base end In the space 8 of the rear end overlap part of the front apron _E1 covered by the trapezoidal front end overlap part formed by the leg part 3 and the free end leg part 4, there is water flowing down from above the front apron _E1 . In addition, in the state shown in Fig. 2b in which the links 1a and 1b are bent at the bending angle β around the connecting pin P, the front ends of the apron bottom plate _E2 are Since the free tip 4' of the free end leg slides on the arcuate outer surface 5 around the connecting pin P and reaches the end of the arcuate outer surface 5, there is no possibility of debris entering between the free tip 4' and the arcuate outer surface 5. Even if a small amount of debris were to enter at the end of the arcuate outer surface 5, it would be stored in the groove 6 and there is no risk of it leaking over the tip of the free standing end 7. It is explained that there is no.

Then, when the bending angles of the links 1a and 1b further increase and the front link 1a takes a substantially horizontal position at the bending angle γ, that is, the state shown in FIG. 2c, the apron bottom plate _E2 The free tip 4' of the front end overlap part separates from the end of the arcuate outer surface 5 of the rear end overlap part of the front apron, and the space 8 is released from the closed state, but the front apron bottom plate _E1 is approximately horizontal. Since it is in the posture, there is no risk of the scattered materials flowing down and intruding into the space 8 from above the apron bottom plate E ₁ in the front position, and furthermore, if the link 1a in the front position is bent from the horizontal position to the downwardly inclined position. The sprinkles stored in the space 8 are discharged onto the apron bottom plate _E1 at the front position.

Therefore, it is explained that during upward gradient conveyance, the scattered materials on the apron do not leak out from the gap between the overlapped ends of the apron.

Problems to be solved by the invention In the conventional example described above, the tip 4' of the trapezoidal free end leg formed at the front end overlapping part of the apron bottom plate is
However, as the link bends, sliding wear occurs due to the falling debris being bitten by the arcuate outer surface 5 of the overlapping portion of the rear end of the front apron bottom plate, causing sliding wear. 4' and the arcuate outer surface 5 increases,
This has the disadvantage that it becomes easier for the sprinkles to enter through the increased gap, and leakage of the sprinkles cannot be completely prevented.

Means for Solving the Problems In order to eliminate the drawbacks of the prior art described above, the present invention eliminates the sliding of the overlapping parts of the apron bottom plate where there is a risk of getting caught in the dumplings, and A front angle of repose forming plate and a rear angle of repose forming plate are installed at the overlapping part of the rear end of the front apron bottom plate to prevent the intrusion of scattered objects and the occurrence of sliding wear. A cover portion having an arc-shaped inner surface that slides into contact with the tips of the front angle-of-repose forming plate and the rear angle-of-repose forming plate is formed at the front end overlapping portion of the apron bottom plate.

Effect When the bending angle between the front link and the following link is zero, that is, when both links are in a straight line and on an upward slope path, the front angle of repose formation plate tip of the front link and the rear angle of repose The tips of the forming plates are in sliding contact with the arc-shaped inner surface of the cover part of each subsequent link, and the tips of the arc-shaped inner surfaces are in contact with the upper surface of the front apron bottom plate, and from this contact gap, the front apron bottom plate Even if the upper part of the collection flows down and intrudes along the slope, the intruding part is blocked by the front angle of repose forming plate and accumulates in the front cavity, forming an angle of repose. The intrusion of the scattered materials will not occur.

Therefore, the debris will not accumulate to a height that reaches between the tip of the front angle of repose forming plate and the arcuate inner surface, and there is no risk of getting caught.

In addition, when the front link and the following link are bent, the tip of the arc-shaped inner surface is separated from the top surface of the front apron bottom plate, so the front space is filled with the scattering material, and the repose angle of the scattering material is The intrusion prevention effect disappears, but even if the scattering material crosses the tip of the anterior angle-of-repose forming plate and enters the rear cavity, it is blocked by the rear angle-of-repose forming plate and accumulates, forming an angle of repose. Therefore, the pieces that form the angle of repose will prevent any more pieces from entering the rear space.

When the front link further bends relative to the trailing link and assumes a horizontal position, the tip of the rear angle-of-repose forming plate is in contact with the arcuate inner surface approximately near the tip, but the front apron Since the bottom plate is in a horizontal state, the scattered material does not flow down, and the angle of repose of the scattered material remaining at the rear angle-of-repose forming plate is formed, so the tip of the rear angle-of-repose forming plate and the arcuate inner surface There is no risk of the scattering material leaking out from the sliding gap.

Embodiment FIGS. 1a, b, and c respectively show the forward link 11 and the trailing link 12 in an unbent state, a bent state, and a maximum bent state in the ascending inclined conveyance path, and each link is connected. A large number of links are connected in a chain by pins P to form an apron conveyor chain, and apron side plates 13, 13 and an apron bottom plate 14 are attached to each link. A cover portion having an arcuate inner surface 15 centered on the apron bottom plate 1 is formed.
4, a front angle of repose forming plate 16 and a rear angle of repose forming plate 17 are formed standing upright in the front and rear.
The tips of the respective forming plates 16 and 17 are in sliding contact with the arcuate inner surface 15, and the tip 1 of the arcuate inner surface 15 is in sliding contact with the arcuate inner surface 15.
5', adjacent links 11 and 12 are in an unbent state;
That is, when it is in a straight line state, it lightly touches the upper surface of the front apron bottom plate 14, and in this state, the arcuate inner surface 15 and the front angle of repose forming plate 1
6 forms a front cavity 18, and the arc-shaped inner surface 15, the front angle of repose forming plate 16, and the rear angle of repose forming plate 17 form a rear cavity 19. In the maximum bending state of the link,
Only the tip of the rear angle of repose forming plate 17 has an arcuate inner surface 1
5, and the state shown in FIG.

Therefore, in the state shown in Figure 1a,
Even if the scatterings enter the small gap between the tip 15' of the arc-shaped inner surface 15 and the top surface of the front apron bottom plate 14, the scatterings that enter the front space 18 form an angle of repose. Further, in the state shown in FIG. 1b, the front empty space 18 is opened by bending the front link 11. It is released, and the angle of repose collapses as the sakimono flows in.

Therefore, even if the scattering material leaks into the rear cavity 19 from the sliding contact gap between the tip of the front angle of repose forming plate 16 and the arcuate inner surface 15, the scattering material leaking into the rear cavity 19 will not be able to escape from the rear cavity. Once the angle of repose is formed by the corner forming plate 17, any more material will be stored in the rear empty space 19.
No more intrusion inside.

Therefore, when the angle of repose of the scattering material is formed in the front empty space 18 in the state shown in FIG. On the other hand, the scattering material does not accumulate to a height that reaches the sliding gap between the front angle of repose forming plate 16 and the arc-shaped inner surface 15, so the scattering material does not get caught in the sliding gap.

Similarly, in the state shown in FIG. The gap is closed to prevent the leakage of the sprinkles, and the sliding contact gap between the rear angle of repose forming plate 17 and the arcuate inner surface 15 is not reached, so the sprinkles do not get caught in the gap. .

Effects of the invention The present invention forms two angle-of-repose forming plates spaced apart from each other in the overlapping part of the apron rear end of the apron conveyor, and an arc-shaped inner surface that slides into contact with the tips of the two angle-of-repose forming plates at the overlapping part of the front end of the apron. Since the cover part is formed to have two empty chambers in which the scattered materials can form an angle of repose, even if the scattered materials that are being conveyed on an upward slope flow down to the overlapping surface of the end of the apron, the empty spaces will be removed from the overlap gap. The leaked debris accumulates and forms an angle of repose, and the leaked debris that forms the angle of repose closes the leakage gap, and the gap between the tip of the angle of repose forming plate and the arcuate inner surface. Therefore, during the bending movement of the link, even if the tips of the front and rear angle-of-repose forming plates slide against the arcuate inner surface, the pieces will not accumulate to the height reached. Therefore, there is no abrasion or abrasion on the arcuate inner surface and the tip of the angle of repose forming plate, and the function of preventing leakage of conveyed materials on the overlapping surface of the apron end is maintained for a long time, and the sliding gap is free from debris. The cause of the squeaking noise caused by the jamming is also eliminated, and it has excellent effects such as enabling quiet operation.

[Brief explanation of the drawing]

Fig. 1 is a side cross-sectional view of the main part of the present invention when an object is being transported in an ascending manner, in which a is a case where the adjacent link is straight, b is a case where the adjacent link is bent, and c is a case when the front link is horizontal. In the case shown in Fig. 2a,
b and c are side sectional views of main parts of the conventional example, where a shows the case where the adjacent link is straight, b shows the case where it is bent, and c shows the case where the front link is almost horizontal. 11, 12... Link, 13... Apron side plate, 14... Apron bottom plate, 15... Arc-shaped inner surface, 15'... Arc-shaped inner surface tip, 16... Front angle of repose forming plate, 17... Rear rest Corner forming plate, 18...
...Front empty room, 19...Rear empty room.

Claims (1)

[Scope of utility model claims] In an apron conveyor in which the front and rear ends of the apron fixed to each link of the conveyor chain overlap the front and rear ends of adjacent aprons, the connecting pins at the front ends of the links are connected to the overlapping front ends of each apron bottom plate. A front angle-of-repose forming plate having a tip slidingly in contact with the arc-shaped inner surface at a rear end overlapping portion, and a rear angle-of-repose forming plate located behind the angle-of-repose forming plate. The front edge of the arcuate inner surface is in contact with the top surface of the front apron bottom plate when the bending angle with the front link is zero, and the front edge of the arcuate inner surface is in contact with the upper surface of the front apron bottom plate, so that the front edge of the arcuate inner surface is in contact with the upper surface of the front apron bottom plate, and A front space is formed in between and a rear space is formed between the rear angle of repose forming plate, and as the bending angle with the front link increases, the front edge of the arcuate inner surface moves forward. A distance from the upper surface of the apron bottom plate to release the front empty space, then release the rear empty space, and contact the tip of the rear angle of repose forming plate at the maximum bending angle when the front link is in a horizontal position. A device for preventing leakage of conveyed material at the overlapped end of the apron.