JP2011173661A - Pulley for belt conveyor - Google Patents

Abstract

A pulley which is configured to forcibly peel off a residue or dust of a conveyance object adhered and deposited on a belt and forcibly exfoliate and forcibly discharge the scraped residue or dust to the outside. I will provide a.
SOLUTION: A shaft 1, end plates 3 provided so as to rotate together with the shaft at both ends of the shaft, and a plurality of bars arranged in parallel with both ends supported at equal circumferential positions on both ends of the shaft. A vertical pulley comprising a material 4, a discharge window provided on the end plate, and discharge means 7 provided so as to discharge scraped and dropped objects dropped between the bar materials from the discharge window. A configuration is adopted in which a spiral scraping transfer protrusion 8 is provided on the both ends from the center of the outer peripheral surface, with one being left-handed and the other being right-handed.
[Selection] Figure 1

Description

  The present invention relates to a pulley for a belt conveyor.

  The contact between the belt and the pulley supporting the belt reversing part constituting the belt conveyor is reduced as much as possible, and the residue or dust of the transported material deposited on the back surface of the belt is peeled off. A pulley (saddle type pulley) that has been dropped and discharged is already known (see, for example, Patent Document 1 and Patent Document 2).

JP-A-10-194425 Japanese Utility Model Publication No. 04-19511

  By the way, the pulley of patent document 1 is comprised from the cylindrical trunk | drum and the axial part which supports this trunk | drum, and several slits penetrated from an outer peripheral surface to an internal peripheral surface are formed in an axial direction in a trunk | drum. Has been. Moreover, the pulley of patent document 2 is formed by laying a large number of horizontal rails on the outer periphery.

  In the pulley having the above-described configuration, the residue or dust of the transported material deposited on the belt is scraped off at the slit opening edge or the side rail edge in parallel. There were contact and non-contact areas on the edge of the horizontal rail, which could not be scraped well and could not be transferred in the side (both sides) direction while being scraped. That is, there is no positive scraping action.

  In addition, water droplets, residue, or dust on the belt that has fallen into the pulley from the gap between the horizontal rails falls and adheres to the outer peripheral surface of the shaft and the inner surface of the end plate. Causes it to occur. Then, there was a problem that the durability was not long-term operation.

  In particular, if the end plate is provided with a discharge window (through-hole) for transported material residue or dust falling in the vertical pulley, the belt tension or the weight of the transported material will damage the plate, resulting in long-term operation. There is no durability against.

  Of course, the above-mentioned problem is caused by corrosion due to the lack of rust prevention means, and the above problem also occurs in the shaft due to the impact of the granular material falling inside.

  Then, this invention is providing the pulley for belt conveyors which solved the above-mentioned problem.

  In order to solve the above-described problems, the present invention provides a shaft, end plates provided so as to rotate with the shaft at both ends of the shaft, and both ends supported at equal circumferential positions on both end plates. A vertical pulley comprising a large number of bars arranged in parallel, a discharge window provided on the end plate, and discharge means provided so as to discharge scraped and dropped objects dropped between the bar materials from the discharge window In the above, a configuration is adopted in which a spiral scraping transfer protrusion is provided on the both ends from the center of the outer peripheral surface of the pulley.

  Also, a shaft, a non-perforated end plate provided so as to rotate together with the shaft at both ends of the shaft, and a bar material arranged in parallel by supporting both ends at equal circumferential positions of the both end plates In the saddle-shaped pulley, the spiral outer periphery of the pulley is provided at both ends from the center of the pulley with one of the left-handed spirals and the other of the right-handed spirals. The structure which provided the protective cover of the said shaft and end plate which rotate together is employ | adopted.

  As described above, according to the pulley of the present invention, the residue or dust of the transported material deposited on the belt due to the contact between the spiral scraping transfer protrusion provided on the outer periphery of the parallel bar member and the belt, etc. Is scraped forcibly and effectively peeled off, and the scraping transfer protrusion is made to be a spiral wound on the other hand on the left side with respect to the left side, so that the above-mentioned scraped material is scraped from the center of the pulley toward both ends of the pulley. Residue or dust can be discharged while being forcibly transferred to the outside, and the contact area between the belt and the pulley can be greatly reduced by the scraping transfer protrusion.

  Also, since a non-perforated end plate (end plate) without a discharge window is used, there is no cause for damage to the end plate because there is no decrease in the strength of the end plate, and the cover can be used for a long time. Since the inner surface of the plate is covered, not only the cause of rust generation but also the impact caused by the granular particles falling into the pulleys can be achieved and the durability can be greatly improved to ensure stable operation.

FIG. 1 is a front view showing a first embodiment pulley of the present invention. FIG. 2 is a longitudinal front view of the above. FIG. 3 is a longitudinal side view of the same. FIG. 4 is a partially cutaway front view showing the second embodiment pulley. FIG. 5 is a side view of the above. FIG. 6 is a partially cutaway front view showing another example of the cover.

  Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings.

A shown in FIGS. 1 to 3 is a saddle type pulley.
The pulley A includes a shaft 1, end plates 3 and 3 that are provided at both ends of the shaft 1 so as to rotate together with the shaft 1 (in the illustrated case, the key 1 is fixed to the shaft 1), and the both end plates 3. , 3 and a bar material 4 arranged in parallel with a number of parallel ends with both ends supported by welding or the like.
In the case of the bar 4 shown in the figure, a plate-like body is used, but a steel bar or the like may be used.

  In addition, by providing the notches 5 at the circumferentially equidistant positions of the end plate 3 and fitting the ends of the bar members 4 into the notches 5, the respective bar members 4 can be arranged accurately and stably. .

The end plate 3 is provided with a plurality of discharge windows 6.
The means for discharging the fallen object that has fallen into the pulley A from between the bar members 4 is such that the central large-diameter portion between both ends is located at the center of the pulley A on the outside of the shaft 1 in the illustrated pulley A, and both ends. The cylindrical inclined guide portion 7 whose small diameter portion is aligned with the side edge of the shaft 1 of the discharge window 6 of the end plate 3 is dropped into the pulley A through the gap between the bar members 4. The transported residue or dust can be guided toward the discharge window 6 and smoothly discharged out of the pulley A from the discharge window 6.

  Instead of the discharge means of the inclined guide member 7, screw blades described in Patent Document 1 (Japanese Patent Laid-Open No. 10-194425) may be provided to discharge fallen objects.

  Further, on the outer periphery of the pulley A, there are provided spiral scraping transfer protrusions 8 and 8 which are wound left-handed from the center between both ends of the pulley A to one end and wound clockwise from the center between both ends of the pulley A to the other end. is there.

  If comprised as mentioned above, according to contact with the belt a and the scraping transfer protrusion 8, the residue or dust of the accumulated conveyed material adhering to the belt a is effectively scraped off, and the pulley A The above-described scraping transfer protrusion 8 is spirally wound left-handed from the middle (between both ends) to one end of the pulley A and right-handed from the middle to the other end of the pulley A. The collected residue and dust can be discharged smoothly while being sequentially transferred to both sides of the belt.

  Next, a second embodiment of the present invention will be described with reference to the accompanying drawings.

A ′ shown in FIGS. 4 to 6 is a saddle type pulley.
The pulley A ′ includes a shaft 11, non-holeless and windowless end plates (end plates) 13, 13 provided so as to be rotated together with the shaft 11 by a key 2 ′ at both ends of the shaft 11, and the end plates 13 and 13 are composed of a bar member 14 arranged in parallel with both ends thereof supported by welding or the like at equal circumferential positions.
The bar material 14 is a plate-like body in the illustrated case, but may be a steel bar or the like.

  In addition, the notch 15 is provided in the circumferentially equidistant position of the end plate 13 as in the first embodiment, and the end of the bar member 14 is fitted into the notch 15 so that each bar member 14 is accurately And it can arrange stably.

  Further, in the pulley A ′, a protective cover B is provided on the outer peripheral surface of the shaft 11 and the inner side surfaces of both end plates 13 and 13.

  As shown in FIG. 4, the protective cover B includes a cylindrical portion 21 fitted on the outer side of both end portions of the shaft 11 and continuous from both end edges of the cylindrical portion 21 (provided integrally or cylindrically). Although it is configured with a funnel-shaped portion 22 having an open edge attached to the inner peripheral surface of the end plate 13 by welding or the like so as to cover the inner surface of the end plate 13 (connected to the end edge of the portion 21 by welding or the like). Without being limited, for example, the small-diameter end edge may be constituted by a funnel-shaped portion of a connection pair. In short, the outer peripheral surface of the shaft 11 and the inner surface of the end plate 13 are covered and protected.

  Further, on the outer periphery of the pulley A ′, spiral scraping transfer protrusions 18, 18 are wound left-handed from the center between both ends of the pulley A ′ to one end, and are wound clockwise from the center between both ends of the pulley A ′ to the other end. Is provided.

  If comprised as mentioned above, since the outer periphery of the shaft 11 and the inner surface of the end plate 13 are covered with the cover B, it is caused by water droplets dropped into the pulley A ′ from the gap between the parallel bar members 14 or residue or dust of the conveyed product. It is effective for rust prevention of the shaft 11 and the end plate 13, and prevents the corrosion due to rust and adhering matter to remarkably improve the durability, and covers the impact of the granular material dropped in the pulley on the shaft and end plate. In addition to preventing this, the end plate has no through-holes or through-holes, thereby avoiding the cause of failure associated with a decrease in strength.

  The scraping and transfer protrusion 18 provided on the outer periphery of the bar member 14 scrapes off residues and dust adhering to the belt a similar to the first embodiment, and scrapes the residues and dust and the side edges of the belt. It can be sent out and discharged. The tension of the belt a is transmitted from the end plate 13 to the shaft 11, and the end plate 13 is not perforated, so that there is no damage.

  The scraping transfer protrusions 8, 8, 18, 18 are fixed to the bar members 4, 14 by welding.

A, A 'pulley B cover a belt 1, 11 shaft 2 key 3, 13 end plate 4, 14 bar material 5, 15 notch 6 discharge window 7 inclined guide member 8, 18 scraping transfer protrusion 21 cylindrical portion 22 Funnel

Claims (2)

  A shaft, end plates provided at both ends of the shaft so as to rotate together with the shaft, a bar material arranged in parallel with a plurality of ends supported at equal circumferential positions on both ends, and the end plate In the saddle type pulley comprising a discharge window provided on the outer peripheral surface of the pulley and a discharge means provided so as to discharge the scraped fallen material dropped from between the bar members from the center of the outer peripheral surface of the pulley. A pulley provided with a spiral scraping transfer protrusion having a right-handed winding with respect to a left-handed winding.   A shaft, a non-perforated end plate provided at both ends of the shaft so as to rotate together with the shaft, and a bar material arranged in parallel by supporting both ends at equal circumferential positions of the both end plates. In this saddle-shaped pulley, a spiral scraping and protruding protrusion is provided on both ends from the center of the outer peripheral surface of the pulley, with one being left-handed and the other being right-handed. A pulley comprising a rotating shaft and an end plate protective cover.

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