JP6881499B2 - Bucket type transfer device - Google Patents

Description

The present invention relates to a bucket-type transport device that transports an object to be transported using a bucket that can accommodate the object to be transported.

Conventionally, as a bucket type transport device for storing and transporting an object to be transported such as powder or granular material in a bucket supported by an endless chain, for example, a device equipped with a sediment scraping device described in Patent Document 1 has been known. There is. The earth and sand scraping device of this bucket type transport device has an arcuate locus at the tip with the base end as a fulcrum near the reversing part that reverses the posture so that the opening faces downward while the bucket is moving in the circuit path. A scraping plate that swings as if drawn is provided. Then, with respect to the bucket that moves so as to pass through the reversing portion while reversing, the tip portion of the scraping plate is reciprocated in the bucket by drawing a predetermined arc-shaped locus between the outside of the bucket and the inside of the bucket. The earth and sand are scraped out from the bucket by the tip of the scraping plate.

Jitsukaisho 60-145109

However, in the earth and sand scraping device of Patent Document 1, when the bucket moves so as to pass through the reversing portion while reversing, the scraping plate has an arc shape with its tip portion directed from the front side to the rear side in the passing direction of the bucket. While drawing a trajectory, it is swung so as to enter the bucket from outside the bucket. Therefore, in this earth and sand scraping device, the scraping plate that allows the tip portion to enter the bucket passing through the reversing portion from the direction opposite to the passing direction of the bucket is involved so as to resist the movement of the bucket. There was a risk of hindering smooth movement.

In other words, in this earth and sand scraping device, when the tip of the scraping plate enters the bucket from the outside of the bucket while drawing an arcuate locus from the front side to the rear side in the passage direction of the bucket, the inner surface of the bucket The earth and sand adhering to the bucket is pressed toward the inner surface of the bucket by the tip of the scraping plate that has entered. Therefore, in this earth and sand scraping device, the earth and sand adhering to the inner surface of the bucket that moves while reversing is compacted to the inner surface of the bucket by the tip of the scraping plate, and the earth and sand is pushed from the inside of the bucket to the outside of the bucket as desired. There was also a risk that it could not be scraped out.

The present invention has been made in view of such circumstances, and an object of the present invention is to easily scrape out the transported object adhering to the inside of the bucket to the outside of the bucket by a scraping member without hindering the smooth movement of the bucket. The purpose is to provide a bucket type transfer device capable of providing a bucket type transfer device.

Hereinafter, means for solving the above problems and their actions and effects will be described.
A plurality of bucket-type transport devices that solve the above problems are supported by the endless chain, each having an endless chain provided so as to be able to move around an endless circulation path and a storage recess capable of accommodating an object to be transported. And the bucket are arranged at an inverted passage position in which the bucket passes in an inverted posture with the opening of the accommodating recess facing downward while orbiting the circulation path as the bucket orbits the endless chain. The scraping member includes a scraping member that scrapes out the object to be transported that adheres to the housing recess to the outside of the bucket by partially moving in and out of the housing recess of the bucket that passes through. When the object to be transported adhering to the storage recess is scraped out of the bucket, the part of the scraping member is inside the storage recess from the rear side to the front side in the passage direction of the bucket. After entering so as to draw a convex curved locus that is convex on the inner inner side of the housing, the movement moves in and out of the housing recess so as to exit from the housing recess.

According to this configuration, the object to be transported, which is attached to the accommodation recess of the bucket, passes through the inverted passage position in the middle of the circulation path in the inverted posture with the opening of the accommodation recess facing downward. It is scraped out of the bucket by the scraping member arranged at the reverse passage position. Then, at this time, the scraped member enters the accommodation recess while drawing a convex curved locus in which a part of the scraping member is convex from the rear side to the front side in the passage direction of the bucket toward the inner back side of the accommodation recess. It moves in and out of the accommodation recess of the bucket so as to exit from the recess. Therefore, when the object to be transported adhering to the accommodation recess of the bucket is scraped out of the bucket, the scraping member does not act as a resistance to the movement of the bucket moving in the inverted posture. , The object to be transported is not compacted toward the inner surface of the accommodating recess.

In the bucket type transfer device, a lever / crank mechanism is arranged at the reverse passage position, and the lever / crank mechanism includes a rotary link that rotates as a crank, a swing link that swings as a crank, and the above. The scraping member is configured to include an intermediate link that converts and transmits a motion mode between the rotary link and the swing link, and the scraping member is the swing link and the intermediate link with respect to the lever / crank mechanism. It is preferable that the part of the bucket is attached so as to move in and out of the accommodating recess of the bucket so as to follow the movement of the connecting portion with the bucket.

According to this configuration, a part of the scraping member moves in and out of the accommodating recess of the bucket following the movement of the connecting portion between the intermediate link of the lever / crank mechanism and the swing link. Therefore, the scraping member becomes convex toward the inner back side of the housing recess in accordance with the movement of the lever / crank mechanism with respect to the housing recess of the bucket that passes through the inverted passing position in the inverted posture. While drawing an endless locus including a convex curved locus, it is possible to smoothly move in and out without hindering the movement of the bucket.

In the bucket type transfer device, the scraping member is a member having a predetermined length whose base end is attached to the lever / crank mechanism, and whose tip is a part in the length direction of the bucket. It is preferable to make contact with the bottom portion of the accommodating recess during the entry / exit operation of the accommodating recess.

According to this configuration, the tip of the scraping member, which is a plate-shaped member, comes into contact with the bottom during the entry / exit operation from entering the bucket's accommodating recess to exiting, so that it adheres to the accommodating recess. The object to be transported can be scraped out of the bucket by scraping it from the bottom of the storage recess.

In the bucket type transfer device, the scraping member enters the accommodating recess of one bucket passing through the inverted passing position so that a part of the scraping member draws a convex curve locus. After exiting from the above, the part of the scraping member may be vibrated based on an external impact before entering the accommodation recess of the other bucket following the one bucket. preferable.

According to this configuration, even if the transported object adheres to a part of the scraped member when the transported object adhering to the accommodation recess is scraped out of the bucket, the scraped member is partially removed. Since it vibrates before entering the accommodating recess of another subsequent bucket, the object to be transported can be easily shaken off from a part of the scraped member by the vibration.

In the bucket type transfer device, it is preferable that the scraping member is flexible and deformable.
According to this configuration, when a part of the scraping member that moves in and out of the accommodation recess of the bucket hits another rigid member in the middle of its movement and receives an impact, the scraping member bends and deforms. It moves so that it rubs against other members. Therefore, it is possible to prevent the operation of the scraping member from being hindered by other members or the like located around it.

According to the present invention, the object to be transported adhering to the inside of the bucket can be easily scraped out of the bucket by the scraping member without hindering the smooth movement of the bucket.

A partially broken side view schematically showing the overall structure of one embodiment of a bucket conveyor. A perspective view showing a state in which a plurality of buckets are assembled on an endless chain. FIG. 1 is a cross-sectional view taken along the line 3-3 in FIG. FIG. 3 is a cross-sectional view taken along the line 4-4 in FIG. A side view showing a state in which the tip of the scraping member is approaching the bucket. A side view showing a state immediately before the tip of the scraping member enters the bucket. The side view which shows the state which the tip part of the scraping member has entered to the bottom part in a bucket. The side view which shows the state which the tip part of the scraping member slides on the bottom part in a bucket. A side view showing a state in which a scraping member scrapes an object to be transported from the inside of a bucket. The side view which shows the state just before the tip part of the scraping member moves out of a bucket. A side view for explaining the movement locus of the tip of the scraped member in chronological order.

Hereinafter, an embodiment of a bucket conveyor, which is an example of a bucket type transfer device, will be described with reference to the drawings. In the following description, when indicating the front-back direction, the left-right direction, and the up-down direction, it is assumed that the direction shown in FIG. 1 or the like is used as a reference.

As shown in FIG. 1, the bucket conveyor 11 of the present embodiment has a so-called crank-shaped conveyor case 12 whose overall shape when viewed from the side is bent at two points in the length direction. The conveyor case 12 includes a square tubular lower case 13 along the front-rear direction, a square tubular upper case 14 along the front-rear direction at a position above and behind the lower case 13, and a lower case 13 and an upper case 14. It is provided with a square tubular intermediate case 15 along the vertical direction between the two. Then, the rear end of the lower case 13 and the lower end of the intermediate case 15 are flexibly connected via the lower connecting case 16, and the front end of the upper case 14 and the upper end of the intermediate case 15 are connected via the upper connecting case 17. Are connected in a bent shape.

The drive-side sprocket 18 is rotatably supported at the rear end of the upper case 14 about the drive shaft 18a along the left-right direction, while the driven-side sprocket 19 is at the front end of the lower case 13. It is rotatably supported around a driven shaft 19a along the left-right direction as a center of rotation. Further, in the conveyor case 12, an endless chain 20 is hung between the driving side sprocket 18 and the driven side sprocket 19. Further, in the lower connecting case 16, a lower intermediate sprocket 21 paired for an outward route and a returning route is rotatably supported around a shaft 21a along the left-right direction, and in the upper connecting case 17. Similarly, a pair of upper intermediate sprockets 22 are rotatably supported around a shaft 22a along the left-right direction. Then, the endless chain 20 is bent and hooked on each of the intermediate sprockets 21 and 22, so that an endless circulation path is formed in the conveyor case 12.

Further, the endless chain 20 is supported so that a plurality of buckets 23 capable of accommodating an object W such as powder or granular material are adjacent to each other in the front-rear direction. Further, in the conveyor case 12, a loading port 24 for the object to be transported W is formed at a position near the front end of the upper wall portion 13a of the lower case 13. On the other hand, at a position below the drive-side sprocket 18 in the upper case 14, a side-view inverted trapezoidal discharge port case 25 in which the inside of the upper case 14 and the internal space communicate with each other is attached, and the discharge port case 25 is attached. The opening at the lower end constitutes the discharge port 26 for the object to be transported W. That is, when each bucket 23 passes below the loading port 24 in the lower case 13 due to the orbital movement of the endless chain 20, the transported object W loaded from above can be accommodated inside. Then, when the bucket 23 accommodating the transported object W inside reverses its posture at the position of the drive side sprocket 18 in the upper case 14, the transported object W housed inside is discharged from the discharge port 26. It can be discharged downward (see FIG. 4).

As shown in FIG. 2, the endless chain 20 is composed of a pair of left and right chain members arranged in parallel at regular intervals in the left-right direction, and a plurality of buckets 23 are assembled between the pair of left and right endless chains 20. Has been done. That is, in each endless chain 20, the link plates 27 in the link 28 composed of a pair of left and right link plates 27 facing each other are end-to-end with the link plates 27 of other links 28 adjacent to each other in the series direction (front-rear direction). It is rotatably connected by a connecting pin 29. The bucket 23 is supported by the endless chain 20 via a support piece portion 30 (see FIG. 3) projecting horizontally from the link plate 27.

A tubular bush (not shown) is inserted between the pair of left and right link plates 27 in the endless chain 20 so as to maintain a distance between the left and right link plates 27 facing each other. The roller 31 is rotatably attached to the bush. The teeth (not shown) of the sprockets 18, 19, 21, 22 are meshed between the rollers 31 adjacent to each other in the front-rear direction. Therefore, in that state, the drive-side sprocket 18 is driven and rotated, so that the endless chain 20 orbits the endless circulation path formed in the conveyor case 12.

By the way, the bucket 23 in the present embodiment cooperates with the pair of left and right side plates 33 in which the inner side surfaces 32 face each other and the pair of side plates 33, and the bucket 23 on one side (upper surface side in FIG. 2). ) Is provided as a recess forming member 35 for forming the accommodating recess 34, and a fixing piece portion 36 for fixing the side plate 33 to the support piece portion 30 of the endless chain 20. That is, in the bucket 23, a fixing piece portion 36 attached to the side plate 33 so as to project horizontally from the outer surface 37 of the side plate 33 is a fastening member such as a bolt or a nut to the support piece portion 30 of the endless chain 20 (not shown). ) Is fixed.

The recess forming member 35 is formed so that the cross-sectional shape is substantially U-shaped by bending a single metal plate having a substantially rectangular shape at a plurality of points in the front-rear direction, which is the length direction thereof. There is. That is, in the recess forming member 35, one end (front end in the figure) and the other end (rear end in the figure) of the band-shaped portion located in the middle in the length direction thereof are valley-folded toward the inside of the accommodating recess 34. It is twisted. This band-shaped portion is a portion that becomes the bottom portion 39 at the inner back of the storage recess 34 when the bucket 23 moves in a transport posture with the opening 38 of the storage recess 34 facing upward, and the bottom portion 39 is a portion in which the bucket 23 accommodates the storage recess 34. When moving in the inverted posture with the opening 38 facing downward, the opening 38 is located above the opening 38.

As shown in FIGS. 1 and 3, from the position corresponding to the drive side sprocket 18 in the front-rear direction on the upper wall portion 14a of the upper case 14, the flat horizontal bracket 40 is on one side in the left-right direction (the present embodiment). Then, it is provided so as to extend to the right side) by a predetermined length. A vertical bracket 41 having a side view table shape is attached to the tip of the horizontal bracket 40 so as to hang downward by a predetermined length. The vertical length of the vertical bracket 41 is slightly shorter than the vertical distance between the upper wall portion 14a of the upper case 14 and the drive shaft 18a of the drive side sprocket 18. A box-shaped motor case 42 is fixed to the lower end of the vertical bracket 41 by welding or the like so that the drive shaft 18a of the drive side sprocket 18 and a part of the motor case 42 overlap when viewed from the left and right. Has been done. Inside the motor case 42, a motor (not shown) that serves as a drive source for the bucket conveyor 11 is arranged.

On the other hand, the drive shaft 18a of the drive-side sprocket 18 is extended so that both ends thereof penetrate the left and right side walls 14b and 14c of the upper case 14 and project to the outside of the upper case 14. Then, in the case of the present embodiment, the right end portion, which is one end portion of the drive shaft 18a, extends into the motor case 42, and the motor is connected to the motor in the motor case 42 via a power transmission mechanism such as a worm gear mechanism or a bevel gear mechanism. It is connected. Therefore, when the motor in the motor case 42 is driven, the drive side sprocket 18 is driven and rotated together with the drive shaft 18a connected to the motor, and the endless chain 20 supporting the plurality of buckets 23 is in the conveyor case 12. It orbits an endless circulation path.

As shown in FIG. 3, in the drive shaft 18a of the drive side sprocket 18, the left end portion protruding from the left side wall 14b of the upper case 14 and the portion protruding from the right side wall 14c are located on the upper case 14 side of the motor case 42. Is fixed with an upper transmission sprocket 43 having a diameter smaller than that of the drive side sprocket 18 in the upper case 14. On the other hand, on the outer surfaces of the left side wall 25b and the right side wall 25c of the discharge port case 25, at a position diagonally downward in front of the drive shaft 18a of the drive side sprocket 18, an inverted L-shaped support is formed when viewed from the front-rear direction. Each bracket 44 is fixed. Bearing portions 45 are provided on the support brackets 44, and each bearing portion 45 is rotatably supported by a link shaft 46 that penetrates each of the left and right side walls 25b and 25c of the discharge port case 25 in the left-right direction. ing.

A lower transmission sprocket 47 having a diameter smaller than that of the upper transmission sprocket 43 is fixed to a portion of each of the left and right link shafts 46 that protrudes from the outlet case 25 and is directly below the upper transmission sprocket 43 when viewed from the front-rear direction. .. Further, on the outer surfaces of the left side wall 25b and the right side wall 25c of the discharge port case 25, the positions between the drive shaft 18a and the link shaft 46 in both the vertical direction and the front-rear direction are reversed U when viewed from the front-rear direction. Each of the support brackets 48 having a character shape is fixed. A small sprocket 49 having a diameter smaller than that of the lower transmission sprocket 47 is rotatably supported at the tip portion of each support bracket 48 that is bent downward. An endless power transmission chain 50 is hung between the upper transmission sprocket 43 and the lower transmission sprocket 47 in a state of being tensioned by the small sprocket 49.

As shown in FIGS. 3 and 4, a pair of lever / crank mechanisms 51 are provided in the outlet case 25 so as to form a pair on the left and right sides. The lever / crank mechanism 51 is a kind of four-bar link mechanism, and is between a rotary link 52 that rotates as a crank, a swing link 53 that swings as a lever, and a rotary link 52 and a swing link 53. It is configured to include an intermediate link 54 that transforms and transmits a movement mode. Since the two paired lever / crank mechanisms 51 have the same member configuration, the configuration of the right lever / crank mechanism 51 on the front side in FIG. 4 will be specifically described below.

The rotating link 52 is fixed so as to rotate integrally with the link shaft 46 with respect to the end portion 46a protruding into the discharge port case 25 of the link shaft 46. The rotary link 52 is fixed to the link shaft 46 and an arm portion 55 having a rod-like shape whose tip end side extends in a rod shape in a direction orthogonal to the axial direction of the link shaft 46 with a portion fixed to the link shaft 46 as a base end portion. It has a weight portion 56 located on the side opposite to the side on which the arm portion 55 extends with the portion as a boundary. Incidentally, the weight portion 56 has a so-called fan-shaped shape having a substantially semicircular shape centered on the portion fixed to the link shaft 46 when viewed from the axial direction of the link shaft 46, and is heavier than the arm portion 55. It is configured to be heavy.

The swing link 53 is arranged in the discharge port case 25 at a position diagonally upward and rearward of the rotary link 52. That is, the swing link 53 has an arm shape of a predetermined length, and the base end portion is rotated by a fixing bracket 57 fixed at a position slightly rearward and above the link shaft 46 in the discharge port case 25. It is supported freely. The fixing bracket 57 is provided so that the tip end side thereof extends obliquely upward and rearward, and the swing link 53 is rotatably supported with respect to the tip end portion of the fixing bracket 57 via a shaft 58. As a result, the tip end side is configured to swing around the shaft 58 as a fulcrum.

The intermediate link 54 is a long plate-shaped member, and its base end portion is rotatably connected to the tip end portion of the arm portion 55 of the rotary link 52 via a shaft 59, and an intermediate position in the length direction thereof. A portion on the tip end side thereof is rotatably connected to the tip end portion of the swing link 53 via a shaft 60. A shaft 61 is erected between the tips of both intermediate links 54 paired on the left and right, and a rectangular plate-shaped scraping member 62 is interposed via a mounting member 63 at an intermediate position in the length direction of the shaft 61. It is attached.

The scraping member 62 is a plate member having a predetermined length whose tip portion is formed so as to be able to enter and exit the accommodating recess 34 of the bucket 23, and is made of synthetic resin or the like so as to be flexible and deformable. It is made of elastic material. Then, the scraping member 62 radiates from the shaft 61 in an inclined posture in which the tip end portion thereof is located closer to the swing link 53 than on the extension line in the length direction of the intermediate link 54 when viewed from the axial direction of the shaft 61. It is fixed via a mounting member 63 at an intermediate position in the length direction of the shaft 61 so as to extend in the direction.

As shown in FIGS. 1 and 4, when the bucket 23 moves the circulation path in the conveyor case 12 from the position of the driven sprocket 19 in the lower case 13 to the position of the driving side sprocket 18 in the upper case 14. The object W to be conveyed is accommodated in the accommodating recess 34 and moved in a conveying posture with the opening 38 of the accommodating recess 34 facing upward so that the object W can be conveyed. On the other hand, when the bucket 23 moves the circulation path in the conveyor case 12 from the position of the driving side sprocket 18 in the upper case 14 to the position of the driven side sprocket 19 in the lower case 13, the opening 38 of the accommodating recess 34 The bottom 39 moves in an inverted posture located above the opening 38.

That is, the bucket 23 reverses its posture so that the opening 38 of the accommodating recess 34 changes from upward to downward when moving around the drive side sprocket 18 while orbiting the circulation path along with the orbital movement of the endless chain 20. Let me. Then, the bucket 23 is in an inverted posture in which the opening 38 of the accommodating recess 34 is directed downward at the position below the drive-side sprocket 18 after the object W to be transported is discharged downward from the accommodating recess 34 during the reversing operation. Pass by. In this respect, in the present embodiment, the lower position of the drive-side sprocket 18 is inverted with the opening 38 of the accommodating recess 34 facing downward while the bucket 23 orbits the circulation path as the bucket 23 orbits the endless chain 20. It corresponds to the inverted passage position where the vehicle passes in the posture.

Then, as shown in FIG. 4, the scraping member 62 having the base end portion attached to the lever / crank mechanism 51 has a tip with respect to the accommodating recess 34 of the bucket 23 that passes through the upper inverted passing position in the inverted posture. By moving the portion in and out, it is possible to scrape the object to be transported W adhering to the inside of the accommodating recess 34 to the outside of the bucket 23. Moreover, the scraping member 62 comes into contact with the bottom 39 of the storage recess 34 when the tip thereof moves in and out of the storage recess 34 of the bucket 23, so that the object W to be transported is removed from the bottom 39 in the storage recess 34. It is possible to scrape it out of the bucket 23 by scraping it.

In the lever / crank mechanism 51 to which the scraping member 62 is attached, the link shaft 46 that rotatably supports the rotary link 52 and the shaft 58 that rotatably supports the base end portion of the swing link 53 are the lever / crank mechanism. When the 51 is operated, the respective positions are not displaced in the direction intersecting the axial direction. On the other hand, the shaft 59 that rotatably connects the base end portion of the intermediate link 54 to the tip end portion of the arm portion 55 of the rotary link 52 and one portion on the tip end portion side of the intermediate link 54 are connected to the tip end portion of the swing link 53. The rotatably connected shafts 60 are displaced in the direction in which their respective positions intersect the axial direction when the lever / crank mechanism 51 is operated. That is, in the lever / crank mechanism 51, which is a four-node link mechanism, the rotating link 52 is the driving node, the swinging link 53 is the driven node, the intermediate link 54 is the intermediate node, and the link shaft 46 and the shaft 58 are between the link shaft 46 and the shaft 58. It is configured to function as a fixed node.

Then, next, regarding the operation of the bucket conveyor 11 configured as described above, the member to be transported W adhering to the inside of the bucket 23 passing through the reverse passage position on the lower side of the drive side sprocket 18 in the reverse posture is scraped out. The description will be given focusing on the action when the bucket 23 is scraped out of the bucket 23 by 62.

When the drive shaft 18a is driven and rotated by the driving force of the motor in the motor case 42, the drive side sprocket 18 rotates integrally with the drive shaft 18a, and the endless chain 20 orbits the circulation path in the conveyor case 12. .. Then, the bucket 23 supported by the endless chain 20 also orbits the circulation path in the same manner, and the opening 38 of the accommodating recess 34 faces upward when moving from above to below around the drive-side sprocket 18 during the movement. Invert the posture so that it faces downward.

That is, the bucket 23 reverses its posture from the transport posture in which the opening 38 of the storage recess 34 accommodating the object to be transported W is upward to the inverted posture in which the opening 38 of the storage recess 34 is downward. Then, the bucket 23 discharges the transported object W downward from the inside of the accommodating recess 34 as the bucket 23 reverses, and then sets the lower inverted passage position of the drive-side sprocket 18 downward through the opening 38 of the accommodating recess 34. Pass in the inverted posture. Incidentally, in the present embodiment, the direction in which the bucket 23 passes the reverse passage position in the reverse posture is the front side in which the bucket 23 moves around the drive side sprocket 18 and then moves away from the drive side sprocket 18.

As shown in FIG. 5, when the bucket 23 passes forward through the reverse passage position on the lower side of the drive side sprocket 18 in the inverted posture with the opening 38 of the accommodating recess 34 facing downward, below the inverted passage position, The lever / crank mechanism 51 operates to move the scraping member 62 in and out of the accommodating recess 34 of the bucket 23. In this case, in the lever / crank mechanism 51, the drive rotation of the drive shaft 18a is transmitted to the link shaft 46 via the power transmission chain 50 mounted between the upper transmission sprocket 43 and the lower transmission sprocket 47. The rotary link 52 rotates at a constant speed in the counterclockwise direction indicated by the arrow in FIG.

That is, in the lever / crank mechanism 51, when the bucket 23 passes through the reversing pass position in the reversing posture with the opening 38 of the accommodating recess 34 facing downward as the endless chain 20 orbits, the rotary link 52 is matched with the passing timing. Rotates as a driving node. Then, the rotational motion of the rotary link 52 is transmitted by converting the motion mode to the swing link 53 via the intermediate link 54 that functions as an intermediate node, and the swing link 53 that functions as a driven node swings. Then, the scraping member 62 follows the movement of the shaft 60 that functions as a connecting portion that connects the tip end portion of the swing link 53 and one portion on the tip end portion side of the intermediate link 54, and the scraping member 62 is the shaft 61 at the tip end portion of the intermediate link 54. At the same time, it moves so as to draw a predetermined movement trajectory. Incidentally, in the state shown in FIG. 5, the scraping member 62 with respect to the bucket 23 after the conveyed object W is discharged from the accommodating recess 34 by reversing the posture as the drive side sprocket 18 rotates in the counterclockwise direction. The tip of the sprocket is approaching from below while drawing a curved locus.

As shown in FIG. 6, when the rotary link 52 of the lever / crank mechanism 51 rotates counterclockwise from the state shown in FIG. 5, the intermediate link 54 has a shaft 59 at the base end and a shaft 60 at the tip end side. Each position of is displaced from the state shown in FIG. That is, in the intermediate link 54, the shaft 59 at the base end is displaced so as to draw an arc-shaped locus in the counterclockwise direction about the link shaft 46, while the shaft 60 at the tip end is centered on the shaft 58. Displaces so as to draw an arc-shaped locus in the clockwise direction. Then, the shaft 61 at the tip of the intermediate link 54 follows the movement of the shaft 60 and moves in a curved locus diagonally backward and upward from the state shown in FIG.

As a result, the scraping member 62 fixed to the shaft 61 also moves while tilting its tip forward while drawing a curved locus diagonally upward and backward, and the tip of the scraping member 62 is moved in an inverted posture on the drive side sprocket 18. It is made to enter the accommodating recess 34 of the bucket 23 passing forward through the lower reverse passage position. At this time, the tip of the scraping member 62 is near the opening edge on the rear side in the passing direction of the bucket 23 with respect to the opening 38 of the accommodating recess 34 of the bucket 23 that passes forward through the inverted passing position in the inverted posture. Enter into the accommodating recess 34 from.

Then, as shown in FIG. 7, when the rotary link 52 of the lever / crank mechanism 51 further rotates in the counterclockwise direction from the state shown in FIG. 6, the shaft 61 at the tip of the intermediate link 54 becomes the shaft 60. Following the movement of, it moves upward from the state shown in FIG. Then, the tip end portion of the scraping member 62 enters the bottom portion 39 in the accommodating recess 34 of the bucket 23 which has moved further forward in the inverted posture from the state shown in FIG. 6, and comes into contact with the inner surface of the bottom portion 39. At this time, the tip of the scraping member 62 is placed in the accommodating recess 34 of the bucket 23, which passes forward through the reverse passage position on the lower side of the drive-side sprocket 18 in the inverted posture, from the rear side in the passage direction of the bucket 23. It enters the accommodation recess 34 toward the front side so as to draw a part of a convex curved locus that is convex toward the inner back side (see FIG. 11).

Therefore, the scraping member 62 is involved so that when the tip portion of the scraping member 62 enters the accommodating recess 34 of the bucket 23 that moves forward in the inverted posture, the tip portion of the scraping member 62 acts as a resistance to movement with respect to the bucket 23. There is no such thing. Further, as shown in FIGS. 6 and 7, when the tip end portion of the scraping member 62 is brought into the bottom portion 39 of the accommodating recess 34 of the bucket 23, the tip end portion thereof is conveyed toward the inner surface of the accommodating recess 34. Since it does not operate to press the object W, the object W to be transported is not compacted into the inner surface of the accommodating recess 34.

Then, as shown in FIG. 8, when the rotary link 52 of the lever / crank mechanism 51 further rotates in the counterclockwise direction from the state shown in FIG. 7, the shaft 61 at the tip of the intermediate link 54 becomes the shaft 60. Following the movement of, it moves forward from the state shown in FIG. 7. Therefore, the scraping member 62 fixed to the shaft 61 also slides its tip forward with respect to the bottom 39 of the accommodating recess 34 of the bucket 23, which also moves forward in the inverted posture. At this time, the tip of the scraping member 62 moves forward at a moving speed slightly faster than the moving speed of the bucket 23. As a result, as shown in FIG. 8, the object W to be transported, which is attached to the bottom 39 of the inner surface of the accommodating recess 34 of the bucket 23, is scraped off by the tip of the scraping member 62.

Then, as shown in FIG. 9, when the rotary link 52 of the lever / crank mechanism 51 further rotates in the counterclockwise direction from the state shown in FIG. 8, the intermediate link 54 has a shaft 61 at the tip thereof and a shaft 60. Following the movement of, it moves in a curved locus diagonally forward and downward as compared with the state shown in FIG. Then, the scraping member 62 fixed to the shaft 61 also moves its tip portion diagonally forward and downward in a curved trajectory as compared with the state shown in FIG. 8, and the bottom portion 39 of the accommodating recess 34 of the bucket 23. Separate from. Then, as shown by the alternate long and short dash line in FIG. 9, the object to be transported W scraped from the bottom 39 of the storage recess 34 of the bucket 23 by the tip of the scraping member 62 is scraped from the inside of the storage recess 34 to the outside of the bucket 23. Being done and falling. However, in this case, a part of the object to be transported W may remain attached to the tip of the scraping member 62 without falling downward.

Then, as shown in FIG. 10, when the rotation link 52 of the lever / crank mechanism 51 further rotates in the counterclockwise direction from the state shown in FIG. 9, the shaft 61 at the tip of the intermediate link 54 becomes the shaft 60. Following the movement of, it moves downward from the state shown in FIG. Then, the tip end portion of the scraping member 62 retracts downward from the inside of the accommodating recess 34 of the bucket 23 that has moved further forward in the inverted posture from the state shown in FIG. Since the lever / crank mechanism 51 of the scraping member 62 continues to operate below the inverted passing position where the bucket 23 passes forward in the inverted posture, the tip portion thereof is seen from the state shown in FIG. It is moved outside the bucket 23 so as to draw a curved locus so as to be in the state shown in FIG. Then, the scraping member 62 has its tip approaching the accommodating recess 34 of the other bucket 23 following (for example, three behind) the bucket 23 having its tip retracted, and the scraping member 62 of the other bucket 23 following it. The tip portion is moved in and out of the accommodating recess 34.

As shown in FIG. 11, the tip of the scraping member 62 is a bucket 23 that passes through the reverse passage position on the lower side of the drive side sprocket 18 in the direction of the white arrow in the inverted posture with the opening 38 of the accommodating recess 34 facing downward. The endless locus ET shown by the alternate long and short dash line is drawn in and out of the accommodating recess 34 in accordance with the movement of the shaft 60 of the lever / crank mechanism 51. That is, the tip of the scraping member 62 is projected from the rear side to the front side of the bucket 23 in the accommodating recess 34 of the bucket 23 passing through the inverted passage position in the direction of the white arrow toward the inner back side of the accommodating recess 34. After entering so as to draw a convex curved locus CT to come into contact with the bottom portion 39, it exits from the inside of the accommodating recess 34.

After that, the tip portion of the scraping member 62 is slightly convex downward except for the convex curved locus CT which is convex toward the inner back side of the accommodating recess 34 among the endless locus ET shown by the alternate long and short dash line in FIG. It moves to the rear side while drawing a curved return locus RT. Then, when the tip of the scraping member 62 starts to move rearward along the return locus RT, the tip of the scraping member 62 is placed at the rear opening edge of the opening 38 of the accommodating recess 34 of the bucket 23 that has exited immediately before the bucket. The collision occurs from the front side opposite to the moving direction of 23.

Since the scraping member 62 is made of an elastic material such as synthetic resin so as to be flexible and deformable, even when the scraping member 62 collides with the bucket 23, the scraping member 62 is flexed and deformed while the opening 38 of the bucket 23 is opened. Move backward so that it rubs against the opening edge. Then, the tip portion of the scraping member 62 vibrates due to an external impact received by the collision with the bucket 23. Therefore, even when the object to be transported W remains attached to the tip of the scraped member 62, such the object to be transported W is shaken off from the tip of the vibrating scraped member 62.

According to the above embodiment, the following effects can be obtained.
(1) When the object to be transported W adhering to the accommodation recess 34 of the bucket 23 is scraped out of the bucket 23 by the scraping member 62, the scraping member 62 acts as a resistance to the movement of the bucket 23. It is not involved, and the object to be transported W is not compacted toward the inner surface of the accommodating recess 34. Therefore, the object to be transported W adhering to the inside of the bucket 23 can be easily scraped out of the bucket 23 by the scraping member 62 without hindering the smooth movement of the bucket 23.

(2) The scraping member 62 moves in and out of the accommodating recess 34 of the bucket 23 that moves in the inverted posture in accordance with the movement of the shaft 60 of the lever / crank mechanism 51. Therefore, while drawing an endless locus ET including a convex curved locus CT that is convex on the inner back side of the accommodating recess 34, the bucket 23 is smoothly moved in and out of the accommodating recess 34 without hindering the movement of the bucket 23. be able to.

(3) The scraping member 62, which is a plate-shaped member, comes into contact with the bottom 39 during the entry / exit operation from when the tip portion enters the accommodation recess 34 of the bucket 23 to when it exits, so that the inside of the accommodation recess 34 The object to be transported W adhering to the container W can be scraped out of the bucket 23 by scraping it from the bottom 39 in the accommodating recess 34.

(4) Even if the object to be transported W adheres to the tip of the scraping member 62 when the object to be transported W adhering to the inside of the accommodating recess 34 is scraped out of the bucket 23, the tip of the scraping member 62 Is vibrated by an impact from the outside until it enters the accommodating recess 34 of the other bucket 23 that follows, so that it can be easily shaken off from the tip of the scraping member 62.

(5) When the scraping member 62 hits another rigid member such as a bucket 23 in the middle of its movement, the tip portion of the scraping member 62 bends and deforms and moves so as to rub against the other member. It is possible to prevent the scraping member 62 from being hindered by such other members.

In addition, this embodiment can be implemented by changing as follows. Further, the present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

-The scraping member 62 may be flexible and deformable when it collides with another member, and has a structure in which an elastic tip end side member is assembled to a rigid proximal end side member, or an elastic proximal end side. A rigid tip-side member may be assembled to the member.

-The scraping member 62 does not necessarily have to be flexible and deformable.
-The scraping member 62 may have a rod shape or a scooping shape at the tip, in addition to the plate shape.

The scraping member 62 may be configured to vibrate by itself without colliding with other members during movement.
-The scraping member 62 does not necessarily have to vibrate during movement.

When the tip of the scraping member 62 enters the storage recess 34 of the bucket 23 that moves in the inverted posture, the bottom 39 even if the tip of the scraping member 62 enters near the bottom 39 of the storage recess 34 of the bucket 23. It may be configured so as not to come into contact with.

The scraping member 62 is not attached to the lever / crank mechanism 51, but is assembled to, for example, a cam mechanism or the like, so that the scraping member 62 is an endless locus including a convex curved locus CT that is convex toward the inner back side of the accommodating recess 34. It may be configured to move while drawing an ET.

The convex curved locus CT drawn when the tip of the scraping member 62 moves in and out of the accommodating recess 34 of the bucket 23 is one point in FIG. 11 if the locus is convex toward the inner back side of the accommodating recess 34. The locus may be different from the convex curved locus CT shown by the chain line.

The reverse passage position of the bucket 23 is a position downstream of the position directly below the drive side sprocket 18 in the moving direction of the bucket 23 if the bucket 23 passes in the inverted posture with the opening 38 of the accommodating recess 34 facing downward. However, the scraping member 62 may be operated by a lever / crank mechanism 51 or the like so as to draw an endless locus ET below such a position on the downstream side.

The bucket-type conveyor is a so-called bucket elevator whose transport direction is vertical and an inclination direction of 60 degrees or more, and a so-called pivoted bucket conveyor that always supports the bucket horizontally with respect to the orbiting endless chain. Further, a so-called apron conveyor or pan conveyor in which the transport direction is a horizontal direction and a gently inclined direction may be used.

11 ... Bucket conveyor (bucket type conveyor), 20 ... Endless chain, 23 ... Bucket, 34 ... Storage recess, 38 ... Opening, 39 ... Bottom, 51 ... Lever / crank mechanism, 52 ... Rotating link, 53 ... Swinging link , 54 ... Intermediate link, 60 ... Shaft (connecting part), 62 ... Scraping member, CT ... Convex curved locus, W ... Conveyed object.

Claims (4)

An endless chain that can move around an endless circulation path,
A plurality of buckets each having an accommodating recess capable of accommodating an object to be transported and supported by the endless chain,
The bucket is arranged at an inverted passage position where the bucket passes in an inverted posture with the opening of the accommodating recess facing downward while orbiting the circulation path as the endless chain orbits, and the bucket passes through the inverted passage position. The housing member is provided with a scraping member that scrapes the object to be transported out of the bucket by moving a part of the housing recesses in and out of the storage recesses.
When the scraped member scrapes the object to be transported adhering to the housing recess to the outside of the bucket, the part of the scraping member enters the housing recess from the rear side to the front side in the passing direction of the bucket. After entering the accommodation recess so as to draw a convex curved locus on the inner inner side of the accommodation recess, the accommodation recess moves in and out so as to exit from the accommodation recess, and further passes through the inverted passage position. After the part of the scraping member enters the accommodating recess of the bucket so as to draw a convex curve locus and then exits, the other bucket following the one bucket. The front side of the opening of the accommodation recess of the one bucket in which the part of the scraping member exited immediately before entering the accommodation recess in the passage direction. A bucket-type transfer device characterized in that it collides with and vibrates from. A lever / crank mechanism is arranged at the reverse passage position.
The lever / crank mechanism includes a rotary link that rotates as a crank, a swing link that swings as a lever, and an intermediate link that converts and transmits a motion mode between the rotary link and the swing link. Consists of, including
The scraping member is attached to the lever / crank mechanism so that a part of the lever follows the movement of the connecting portion between the swing link and the intermediate link and moves in and out of the accommodating recess of the bucket. The bucket-type transfer device according to claim 1, wherein the bucket type transfer device is provided. The scraping member is a member having a predetermined length whose base end portion is attached to the lever / crank mechanism, and the tip portion which is a part in the length direction thereof is used when the bucket is moved in and out of the accommodating recess. The bucket-type transfer device according to claim 2, wherein the bucket-type transfer device is in contact with the bottom portion of the accommodating recess. The bucket-type transport device according to any one of claims 1 to 3, wherein the scraping member is flexible and deformable.

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