JP2016117552A - Bucket conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bucket conveyor that is able to keep chain tension appropriate by restricting a follower part from moving over accumulation of conveyed matter, thereby smoothly making take-up adjustment.SOLUTION: A casing 10 of a bucket conveyor 100 comprises: a casing main body composing a conveyance space 11; a pair of accommodating parts 60R, 60L composing an accommodating space 61; and partition walls 81R, 81L arranged between the conveyance space 11 and the accommodating space 61. A follower part 40 includes: a follower shaft 42 disposed in a lower part of the conveyance space 11, and both ends of which are located in the accommodating space 61; a plurality of follower sprockets 46A, 46B; and a weight 48 supported by the follower shaft 42. The follower part 40 is vertically movable while the follower shaft 42 passes through a first opening 83 in the partition walls 81R, 81L. Conveyed matter M thrown in the conveyance space 11 is blocked by the partition walls 81R, 81L and made less unlikely to accumulate in the accommodation parts.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a bucket conveyor. More particularly, the present invention relates to a bucket conveyor in which chain tension adjustment is automatically performed.

  Conventionally, for example, a bucket conveyor that conveys powder, fine particles, or a lump such as limestone or clinker from the bottom to the top is known.

  For example, a bucket conveyor disclosed in Japanese Patent Application Laid-Open No. 9-255127 includes a casing, a drive unit, a driven unit, a plurality of chains, and a plurality of buckets. The casing has a conveyance space inside. At the lower part of the casing, there is provided an input port for inputting a conveyed product. A discharge port for discharging the conveyed product is provided in the upper part of the casing. The drive part is arrange | positioned at the upper part of a casing, and has a drive sprocket and a drive source. The driven portion is disposed at the lower portion of the casing and has a driven sprocket. The plurality of chains are wound around the drive sprocket and the driven sprocket. The plurality of buckets are supported by the plurality of chains, and circulate in the vertical direction in the casing together with the chains.

  The conveyed product is thrown into the casing from the charging port and accumulates in the lower portion of the conveying space. The bucket scoops up the conveyed material accumulated in the lower part of the casing and conveys it upward. The bucket is reversed in the upper part of the conveyance space, and the conveyed product is dropped toward the discharge port. The conveyed product is discharged to the outside from the discharge port.

  By the way, since a movable part wears a chain by use, the length of a chain becomes long gradually. The longer chain is called chain elongation. If the chain is extended while the distance between the drive sprocket and the driven sprocket is constant, the tension of the chain will decrease. If the chain tension decreases, the conveyed product may not be conveyed normally.

  In the bucket conveyor disclosed in Japanese Patent Laid-Open No. 51-27283, the chain tension is automatically adjusted by the weight attached to the driven shaft. Chain tension adjustment is also called take-up adjustment.

  In the bucket conveyor disclosed in FIG. 2 of Japanese Patent Laid-Open No. 51-27283, a driven portion is disposed at the lower part of the casing. The driven part has a driven shaft, a driven bearing part, a driven sprocket, and a weight. A pair of driven bearing portions are provided at both ends of the driven shaft. A pair of driven sprockets are supported at the center of the driven shaft. Weights are supported between the left driven bearing portion and the driven sprocket and between the right driven bearing portion and the driven sprocket. A chain is wound around each of the left and right driven sprockets. The driven part is in a state of being suspended by a chain. The chain is pulled downward due to the weight of the driven part including the weight, so that an appropriate tension is applied.

  In the bucket conveyor disclosed in Japanese Patent Laid-Open No. 51-27283, the driven portion moves downward according to the elongation of the chain. For this reason, the tension of the chain is automatically adjusted, and an appropriate tension is always applied to the chain.

JP-A-9-255127 JP-A 51-27283

  By the way, the conveyed product conveyed with a bucket conveyor as mentioned above is thrown in in a casing from an insertion port, and accumulates in the lower part of conveyance space. That is, the loaded transported material is deposited below and around the driven unit. For this reason, the driven part may get on the accumulated conveyance object.

  In an area where a plurality of buckets pass while circulating in the lower part of the conveyance space, the conveyed items are scooped up by the buckets. For this reason, it is unlikely that the state in which the conveyed product is accumulated continues. On the other hand, in a region outside the region through which the bucket passes, the conveyed product is not picked up by the bucket. For this reason, the state in which the conveyed product is accumulated may continue. In this case, a driven bearing portion or a weight, which is a portion away from the bucket, of the driven portion may ride on the accumulated conveyance object. If the state where the follower on the accumulated transported material continues to ride, the weight of the follower on the chain is not added, and an appropriate tension cannot be applied to the chain.

  Whether or not the follower on the accumulated transported material rides is also related to the viscosity or adhesion of the transported material. The viscosity or adhesion of the conveyed product is related to the ease of collapse of the accumulated conveyed product. For example, the breath angle of a conveyed product with high viscosity or adhesion is larger than the breath angle of a conveyed product with low viscosity or adhesion.

  If the transported material has a relatively low viscosity or adhesion, the transported material tends to collapse even if it is deposited, so that it often resolves spontaneously even when the driven portion of the deposited transported material gets on. For this reason, there are few cases where the tension of the chain decreases and the conveyed product cannot be conveyed normally. The frequency of maintenance for removing the accumulated transported material may be low.

  However, when the transported material has a relatively high viscosity or adhesion, the deposited transported material is unlikely to collapse. When the follower on the accumulated transported object is in a state of riding, it is rarely resolved naturally. For this reason, the tension of the chain is lowered, and the conveyed product may not be conveyed normally. Moreover, since the frequency of the maintenance which stops the operation | movement of a bucket conveyor and removes the accumulated conveyance thing increases, the conveyance efficiency of a bucket conveyor also falls.

  It is an object of the present invention to provide a bucket conveyor that can smoothly perform take-up adjustment and keep the chain tension properly by suppressing the driven portion from climbing on the accumulated transported object.

  The bucket conveyor of the present invention extends in the vertical direction, and has a casing having a conveyance space therein, a drive unit disposed in the upper part of the casing, a driven unit disposed in the lower part of the casing, and disposed in the conveyance space. A plurality of chains that connect the drive unit and the driven unit, and a plurality of buckets that are supported by the plurality of chains and circulate in the up and down direction in the conveyance space together with the chains. The casing is a pair of housings having a housing space which is arranged to face the casing body constituting the transporting space and is opposed to the left and right direction in the lower part of the casing body with the direction intersecting the vertical direction as the left-right direction. And an inlet for placing the conveyed product in the lower part of the conveying space, and an outlet for ejecting the conveyed object from the conveying space to the outside. Have. The drive unit is disposed in the upper part of the conveyance space, and is provided with a drive shaft extending in the left-right direction, a plurality of drive sprockets around which a plurality of chains are wound, while being supported by the drive shaft with a space in the left-right direction. And a drive source for driving the drive sprocket via the shaft. The driven portion is disposed in the lower portion of the conveyance space, extends in the left-right direction, and has a pair of driven bearings in which both end portions respectively support the both end portions of the driven shaft and are positioned in the receiving space. And a plurality of driven sprockets, which are positioned in the conveyance space and supported by the driven shaft at intervals in the left-right direction and on which a plurality of chains are respectively wound, and weights supported by the driven shaft and positioned in the conveyance space And having. The casing further includes an isolation wall disposed between the conveyance space and the accommodation space. The isolation wall includes a first opening extending in the vertical direction and penetrating the driven shaft. The driven portion is driven. The shaft is movable in the vertical direction with the shaft penetrating the first opening.

  According to the bucket conveyor of the present invention, the conveyed product put into the conveyance space is blocked by the isolation wall and is difficult to be accumulated in the accommodating portion. Moreover, since the conveyed product accumulated in the lower part of the conveyance space is scooped up by the bucket, the driven portion is unlikely to ride on the accumulated conveyed product. Therefore, it is possible to suppress the driven portion from climbing on the accumulated conveyance object, to smoothly perform the take-up adjustment, and to maintain the chain tension appropriately.

FIG. 1 is a right side view in which a part of a bucket conveyor according to an embodiment of the present invention is omitted. FIG. 2 is a top view of the bucket conveyor. FIG. 3 is a right side view of the lower portion of the bucket conveyor. FIG. 4 is a cross-sectional view of the tail frame taken along line AA in FIG. FIG. 5 is a cross-sectional view showing a state in which a conveyed product is conveyed by a bucket conveyor.

  A bucket conveyor according to an embodiment of the present invention includes a casing that extends in the vertical direction and has a conveyance space therein, a drive unit that is disposed at an upper part of the casing, a driven unit that is disposed at a lower part of the casing, and a conveyance A plurality of chains arranged in the space and connecting the drive unit and the driven unit, and a plurality of buckets supported by the plurality of chains and circulating in the up and down direction together with the chains in the conveyance space. The casing is a pair of housings having a housing space which is arranged to face the casing body constituting the transporting space and is opposed to the left and right direction in the lower part of the casing body with the direction intersecting the vertical direction as the left-right direction. And an inlet for placing the conveyed product in the lower part of the conveying space, and an outlet for ejecting the conveyed object from the conveying space to the outside. Have. The drive unit is disposed in the upper part of the conveyance space, and is provided with a drive shaft extending in the left-right direction, a plurality of drive sprockets around which a plurality of chains are wound, while being supported by the drive shaft with a space in the left-right direction. And a drive source for driving the drive sprocket via the shaft. The driven portion is disposed in the lower portion of the conveyance space, extends in the left-right direction, and has a pair of driven bearings in which both end portions respectively support the both end portions of the driven shaft and are positioned in the receiving space. And a plurality of driven sprockets, which are positioned in the conveyance space and supported by the driven shaft at intervals in the left-right direction and on which a plurality of chains are respectively wound, and weights supported by the driven shaft and positioned in the conveyance space And having. The casing further includes an isolation wall disposed between the conveyance space and the accommodation space. The isolation wall includes a first opening extending in the vertical direction and penetrating the driven shaft. The driven portion is driven. The shaft is movable in the vertical direction with the shaft penetrating through the first opening (first configuration).

  According to the said structure, the conveyed product thrown into conveyance space becomes blocked | interrupted by an isolation wall, and becomes difficult to accumulate in an accommodating part. Moreover, since the conveyed product accumulated in the lower part of the conveyance space is scooped up by the bucket, the driven portion is unlikely to ride on the accumulated conveyed product. Therefore, it is possible to suppress the driven portion from climbing on the accumulated conveyance object, to smoothly perform the take-up adjustment, and to maintain the chain tension appropriately.

  In the first configuration, the casing may further include a closing plate that closes the first opening above and / or below the driven shaft, and the closing plate may be movable in the vertical direction together with the driven portion. (Second configuration).

  According to the said structure, the conveyed product thrown into conveyance space will be obstruct | occluded by the isolation wall and the obstruction board, and it will become difficult to accumulate in an accommodating part. Therefore, it is possible to suppress the driven portion from climbing on the accumulated conveyance object, to smoothly perform the take-up adjustment, and to maintain the chain tension appropriately.

  In the second configuration, the closing plate may be disposed on a surface on the driven bearing portion side with respect to the isolation wall, and the driven portion may include a connecting portion that connects the driven bearing portion and the closing plate (first). 3 configuration).

  According to the said structure, attachment of a closure board is easy.

  In any of the first to third configurations, the weight may be arranged at a position sandwiched between a plurality of driven sprockets (fourth configuration).

  According to the above configuration, the transported material deposited in the lower portion of the transport space is scooped up by the bucket, so that the deposited transported product is prevented from interfering with the weight. Therefore, it is possible to suppress the driven portion from climbing on the accumulated conveyance object, to smoothly perform the take-up adjustment, and to maintain the chain tension appropriately.

  In the fourth configuration, when viewed from the axial center direction of the driven shaft, the weight is circular and is disposed inside the trajectory through which the bucket circulates, and the driven sprocket is a driven boss for connecting to the driven shaft. The driven boss may be substantially circular when viewed from the axial direction of the driven shaft, and may have an outer diameter substantially the same as the weight (fifth configuration).

  According to the above configuration, by increasing the weight of the driven boss, the weight of the driven portion can be ensured regardless of the amount of weight. For this reason, take-up adjustment is possible without increasing the amount of weight, and the chain tension can be maintained appropriately.

  In any one of the first to fifth configurations, the outer diameter of the central portion of the driven shaft may be larger than the outer diameter of the portion where the driven shaft is supported by the driven bearing portion (sixth configuration). ).

  According to the said structure, the weight of a driven part is securable irrespective of the quantity of a weight by enlarging the outer diameter of the center part of a driven shaft, and increasing a weight. For this reason, take-up adjustment is possible without increasing the amount of weight, and the chain tension can be maintained appropriately.

[Embodiment]
Hereinafter, with reference to drawings, bucket conveyor 100 concerning an embodiment of the present invention is explained in detail. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated. In addition, in order to make the explanation easy to understand, in the drawings referred to below, the configuration is shown in a simplified or schematic manner, or some components are omitted. Further, the dimensional ratio between the constituent members shown in each drawing does not necessarily indicate an actual dimensional ratio.

[overall structure]
First, the overall configuration of the bucket conveyor 100 will be described. FIG. 1 is a right side view in which a part of a bucket conveyor 100 according to an embodiment of the present invention is omitted. In the following drawings, arrow F indicates the front of the bucket conveyor 100, and arrow B indicates the rear of the bucket conveyor 100. An arrow R indicates the right direction of the bucket conveyor 100, and an arrow L indicates the left direction of the bucket conveyor 100. An arrow U indicates the upward direction of the bucket conveyor 100, and an arrow D indicates the lower side of the bucket conveyor 100.

  The bucket conveyor of this embodiment conveys granulated slag as the conveyed product M, for example. Granulated slag is obtained by putting waste melted at a high temperature into water, rapidly cooling it, and solidifying it. Granulated slag is a fine granule and has the property of easily adhering to each other when wet with water. The bucket conveyor of this embodiment is used for conveying the granulated slag collected from underwater and wet from below to above. In addition, the conveyed product which can be conveyed with the bucket conveyor of this invention is not limited to a granulated slag, and can convey various conveyed products.

  As shown in FIG. 1, the bucket conveyor 100 includes a casing 10, a drive unit 20, a driven unit 40, chains CA and CB, and a plurality of buckets 70.

  The casing 10 extends in the vertical direction. The casing 10 has a tail frame 12, a head frame 14, and a plurality of intermediate frames 16A, 16B, 16C... 16D, 16E.

  The tail frame 12 constitutes the lower part of the casing 10. The tail frame 12 has a cylindrical tail frame main body 50.

  The head frame 14 constitutes the upper part of the casing 10. The head frame 14 has a cylindrical head frame main body 18.

  The intermediate frames 16A, 16B, 16C... 16D, 16E are arranged between the tail frame 12 and the head frame 14. The intermediate frames 16A, 16B, 16C... 16D, 16E are cylindrical. The tail frame 12, the intermediate frames 16A, 16B, 16C... 16D, 16E, and the head frame 14 are connected by a fastening member such as a bolt.

  The tail frame main body 50, the intermediate frames 16A, 16B, 16C... 16D, 16E, and the head frame main body 18 constitute a conveyance space 11 inside. The conveyance space 11 extends in the vertical direction. The tail frame main body 50, the intermediate frames 16A, 16B, 16C... 16D, 16E, and the head frame main body 18 correspond to the casing main body of the present invention.

  The intermediate frame 16A is provided with a loading portion 13. A charging port 13A is provided at the top of the charging unit 13. The insertion port 13 </ b> A communicates with the conveyance space 11 inside the casing 10. The head frame 14 is provided with a discharge portion 15. A discharge port 15 </ b> A is provided at a lower portion of the discharge unit 15. The discharge port 15 </ b> A communicates with the conveyance space 11 inside the casing 10. The conveyed product M is input into the transfer space 11 of the casing 10 from the input port 13A of the input unit 13, is conveyed upward by the plurality of buckets 70, and is discharged to the outside from the discharge port 15A of the discharge unit 15.

  The drive unit 20 is disposed on the head frame 14. The drive unit 20 includes a drive shaft 22, drive sprockets 24 </ b> A and 24 </ b> B, and an electric motor 26. The electric motor 26 corresponds to a drive source of the present invention.

  The drive shaft 22 extends in the left-right direction and passes through the head frame main body 18. Both end portions of the drive shaft 22 are supported by drive bearing portions 23 outside the head frame 14. An intermediate portion of the drive shaft 22 is disposed in the head frame 14, that is, in the upper portion of the conveyance space 11. The drive bearing portion 23 is supported by bearing support bases 27 provided on the left and right sides of the head frame 14.

  The drive sprockets 24 </ b> A and 24 </ b> B are supported by the drive shaft 22 inside the head frame 14. In FIG. 1, the right drive sprocket 24A is visible. A chain CA is wound around the drive sprocket 24A, and a chain CB is wound around the drive sprocket 24B.

  The electric motor 26 is disposed at the front portion of the head frame 14. The electric motor 26 is supported on a support base 28 provided on the head frame 14. The driving force of the electric motor 26 rotates the drive sprockets 24A and 24B via the belt 26C and the drive shaft 22.

  The follower 40 is disposed on the tail frame 12. The driven portion 40 includes a driven shaft 42, a driven bearing portion 44, driven sprockets 46 </ b> A and 46 </ b> B, and a weight 48.

  The driven shaft 42 extends in the left-right direction. The driven shaft 42 is entirely disposed inside the tail frame 12.

  The driven bearing portion 44 is disposed at both ends of the driven shaft 42 and supports the driven shaft 42. The driven bearing portion 44 is supported so as to be movable in the vertical direction, and movement in the front-rear direction is restricted. The configuration for supporting the driven bearing portion 44 will be described later.

  The driven sprockets 46 </ b> A and 46 </ b> B are supported by the driven shaft 42 inside the tail frame 12. In FIG. 1, the right driven sprocket 46A is visible. A chain CA is wound around the driven sprocket 46A, and a chain CB is wound around the driven sprocket 46B. The driven sprockets 46A and 46B are driven to rotate via the chains CA and CB when the driving sprockets 24A and 24B are driven to rotate.

  The weight 48 is supported by the driven shaft 42. The weight 48 is provided to apply an appropriate tension to the chains CA and CB. The driven portion 40 is suspended by the chains CA and CB, and the chains CA and CB are pulled downward by the weight of the driven portion 40 including the weight 48. For this reason, an appropriate tension can be applied to the chains CA and CB.

  The chains CA and CB are wound around the drive sprockets 24A and 24B and the driven sprockets 46A and 46B. The drive sprockets 24A and 24B are driven to rotate and the driven sprockets 46A and 46B are driven to rotate, whereby the chains CA and CB travel while circulating in the transport direction FW and the return direction BW inside the casing 10.

  The plurality of buckets 70 are supported by the chains CA and CB. The bucket 70 is a bottomed container and has an opening. The bucket 70 is supported so as to straddle the chains CA and CB. The bucket 70 has an opening facing upward when the chains CA and CB travel in the transport direction FW, and directs the opening downward when the chains CA and CB travel in the return direction BW. It is fixed to.

  The plurality of buckets 70 convey the conveyed product M while circulating in the conveyance direction FW and the return direction BW together with the chains CA and CB. Specifically, the plurality of buckets 70 sequentially pick up the conveyed product M put into the lower portion of the conveyance space 11 and convey the conveyed product M upward with the opening portion facing upward. In the upper part of the conveyance space 11, the bucket 70 is inverted to direct the opening downward, and the conveyed product M is dropped from the opening of the bucket 70 toward the discharge unit 15. The conveyed product M is discharged to the outside from the discharge port 15A.

[Configuration of head frame and drive unit]
FIG. 2 is a top view of the bucket conveyor 100. In FIG. 2, the head frame 14 is mainly visible. In FIG. 2, the tail frame 12 is not shown.

  The head frame 14 has a head frame main body 18. The head frame main body 18 is rectangular in plan view. The head frame main body 18 is cylindrical and has a conveyance space 11 therein. The upper part of the head frame main body 18 is covered with a top part 19.

  A support base 28 is installed at the front of the head frame main body 18. Below the support base 28, the input unit 13 is visible.

  A discharge portion 15 is provided at the rear portion of the head frame main body 18. A bearing support base 27 is installed on the left side and the right side of the head frame main body 18. A drive bearing portion 23 is disposed on each bearing support 27. The drive bearing portion 23 supports both ends of the drive shaft 22. The left end of the drive shaft 22 extends leftward and is connected to the second pulley 26D.

  A reduction gear 26 </ b> A is fixed to the support base 28. The electric motor 26 is connected to the speed reducer 26A. A first pulley 26B is connected to the rotation shaft of the speed reducer 26A. A belt 26C is wound around the first pulley 26B and the second pulley 26D. The first pulley 26B, the belt 26C, and the second pulley 26D are accommodated in a case 29.

  Drive sprockets 24A and 24B are supported on the drive shaft 22. The drive sprockets 24A and 24B are supported by the drive shaft 22 with a space in the left-right direction. The driving force of the electric motor 26 is transmitted to the drive sprockets 24A and 24B via the speed reducer 26A, the first pulley 26B, the belt 26C, the second pulley 26D, and the drive shaft 22. A chain CA is wound around the drive sprocket 24A, and a chain CB is wound around the drive sprocket 24B. A plurality of buckets 70 are supported on the chains CA and CB.

[Configuration of tail frame and follower]
FIG. 3 is a right side view of the lower portion of the bucket conveyor 100. In FIG. 3, the tail frame 12 and the intermediate frame 16A are visible. The tail frame 12 includes a tail frame main body 50, a right accommodating portion 60R, and a left accommodating portion 60L. In FIG. 3, the right housing part 60R is visible. The right accommodating portion 60R and the left accommodating portion 60L correspond to a pair of accommodating portions of the present invention.

  The tail frame main body 50 extends in the vertical direction. The tail frame main body 50 has a cylindrical shape and has a conveyance space 11 therein. A driven portion 40 is disposed inside the tail frame main body 50. A bottom 51 is provided at the bottom of the tail frame main body 50. The bottom 51 is located at the lower end of the transport space 11.

  Since the right housing portion 60R and the left housing portion 60L are symmetrical, the right housing portion 60R will be described below, and the description of the left housing portion 60L will be omitted.

  The right accommodating portion 60R is disposed on the right side surface of the tail frame main body 50. A driven bearing portion 44 of the driven portion 40 is disposed in the right accommodating portion 60R. The driven bearing portion 44 is fixed to the bearing plate 45. The bearing plate 45 is supported by guide plates 62 </ b> A and 62 </ b> B disposed before and after the bearing plate 45. The guide plates 62A and 62B are fixed inside the right accommodating portion 60R.

  The bearing plate 45 is supported by the guide plates 62A and 62B so as to be movable in the vertical direction. Further, the movement of the bearing plate 45 in the front-rear direction and the left-right direction is restricted by the guide plates 62A and 62B. For this reason, the follower 40 can move in the vertical direction, and movement in the front-rear direction is restricted.

  A restricting portion 63 is provided below the guide plates 62A and 62B. The restricting portion 63 is in contact with the lower portion of the bearing plate 45 to prevent the bearing plate 45 from falling off the guide plates 62A and 62B.

  A broken line L1 and a broken line L2 indicate a trajectory through which the plurality of buckets 70 circulate. A broken line L1 is a trajectory through which the plurality of buckets 70 circulate when the driven unit 40 is located at the upper limit. A broken line L2 is a trajectory through which the plurality of buckets 70 circulate when the driven unit 40 is located at the lower limit.

  An adjustment bolt 66 is provided on the upper surface portion 64 of the right accommodating portion 60R. The adjustment bolt 66 is disposed at a position where the lower portion of the adjustment bolt 66 can contact the bearing plate 45. The adjustment bolt 66 is provided to limit the amount by which the driven bearing portion 44 moves upward.

  A large inspection port 52 is provided at the rear of the tail frame main body 50. The inspection port 52 is provided with a door (not shown). By providing the large inspection port 52 in the lower part of the tail frame main body 50, the maintenance of the driven portion 40 is facilitated.

  4 is a cross-sectional view of the tail frame 12 taken along line AA in FIG. As shown in FIG. 4, the right accommodating portion 60 </ b> R is disposed on the right side surface of the tail frame main body 50. The left accommodating portion 60L is disposed on the left side surface of the tail frame main body 50. The right accommodating portion 60R and the left accommodating portion 60L are arranged to face each other with the tail frame main body 50 interposed therebetween. Storage spaces 61 are formed in the right storage portion 60R and the left storage portion 60L, respectively.

  A driven portion 40 is disposed in the conveyance space 11 of the tail frame main body 50. The driven shaft 42 extends in the left-right direction. Both ends of the driven shaft 42 are located in the accommodation space 61 of the right accommodation portion 60R and the left accommodation portion 60L. A driven bearing portion 44 is also disposed in the accommodation space 61 of the right accommodation portion 60R and the left accommodation portion 60L. The driven bearing portion 44 is fixed to the bearing plate 45. The guide plates 62A and 62B that support the bearing plate 45 are not shown.

  A right isolation wall 81 </ b> R is disposed between the accommodation space 61 of the right accommodation portion 60 </ b> R and the transfer space 11. A left isolation wall 81L is disposed between the storage space 61 of the left storage portion 60L and the transfer space 11. The right isolation wall 81R and the left isolation wall 81L correspond to the isolation wall of the present invention. Each of the right isolation wall 81R and the left isolation wall 81L has a first opening 83. The right isolation wall 81R and the left isolation wall 81L separate the transport space 11 and the accommodation space 61 at portions other than the first opening 83. In the first opening 83, the conveyance space 11 and the accommodation space 61 are in communication.

  The first opening 83 extends in the vertical direction. The first opening 83 is, for example, a long hole. The driven shaft 42 passes through the first opening 83. The length of the first opening 83 in the vertical direction is such that the driven shaft 42 can move up and down. The length of the first opening 83 in the front-rear direction is set longer than the outer diameter of the driven shaft 42 so that the driven shaft 42 does not contact. For this reason, the driven portion 40 is movable in the vertical direction with the driven shaft 42 penetrating the first opening 83.

  A right closing plate 85R is disposed on the surface 81RE of the right isolation wall 81R on the driven bearing portion 44 side. A left blocking plate 85L is disposed on the surface 81LE of the left isolation wall 81L on the driven bearing portion 44 side. The right closing plate 85R and the left closing plate 85L close the first opening 83 above and / or below the driven shaft 42. The right closing plate 85R and the left closing plate 85L correspond to the closing plate of the present invention.

  A second opening 86 is formed in each of the right closing plate 85R and the left closing plate 85L. The second opening 86 is, for example, circular. The driven shaft 42 passes through the second opening 86. The inner diameter of the second opening 86 is set slightly larger than the outer diameter of the driven shaft 42 so that the second opening 86 does not contact the driven shaft 42.

  The right closing plate 85R is connected to the right bearing plate 45 via a connecting portion 87. The left isolation wall 81L is also connected to the left bearing plate 45 via a connecting portion 87. For this reason, the right closing plate 85R and the left closing plate 85L are movable in the vertical direction together with the driven portion 40.

  A packing 88 is interposed between the surface 81RE of the right isolation wall 81R and the right closing plate 85R. A packing 88 is also interposed between the surface 81LE of the left isolation wall 81L and the left blocking plate 85L. As the packing 88, for example, a sheet-like felt packing can be used. An opening (not shown) through which the driven shaft 42 passes is formed in the packing 88. The opening formed in the packing 88 is formed so as to be in close contact with the periphery of the driven shaft 42. The packing 88 can move in the vertical direction together with the driven portion 40. For this reason, the gap between the second opening 86 formed in the right closing plate 85R and the left closing plate 85L and the driven shaft 42 is closed by the packing 88. Thereby, the conveyance space 11 and the accommodation space 61 are separated from each other, and the conveyed product M put into the conveyance space 11 is less likely to enter the accommodation space 61.

  The driven sprockets 46A and 46B are supported by the driven shaft 42 with a space in the left-right direction. The driven sprockets 46 </ b> A and 46 </ b> B have a driven boss 47 for connecting to the driven shaft 42. The weight 48 is disposed so as to be sandwiched between the driven sprockets 46A and 46B. Specifically, the weight 48 is disposed so as to be sandwiched between the driven bosses 47 of the driven sprockets 46A and 46B. The shape of the weight 48 is circular when viewed from the axial direction of the driven shaft 42. An opening for penetrating the driven shaft 42 is formed at the center of the weight 48. In this embodiment, five weights 48 are used. The driven bosses 47 of the driven sprockets 46A and 46B are also circular when viewed from the axial direction of the driven shaft 42. The driven boss 47 has substantially the same outer diameter as the weight 48. The driven boss 47 and the weight 48 are arranged inside the trajectory through which the bucket 70 circulates, and do not interfere with the bucket 70.

  The central portion of the driven shaft 42 is thicker than both end portions. Specifically, if the outer diameter of the central portion of the driven shaft 42 is the first outer diameter R1, and the outer diameter of the portion where the driven shaft 42 is supported by the driven bearing portion 44 is the second outer diameter R2, the first The outer diameter R1 is larger than the second outer diameter R2. By making the outer diameter of the driven shaft 42 thick, the driven shaft 42 can have the same action as the weight 48.

  FIG. 5 is a cross-sectional view showing a state in which the conveyed product M is conveyed by the bucket conveyor 100. In FIG. 5, as the conveyed product M, the state which conveys granulated slag, for example is shown. The conveyed product M is thrown into the transfer space 11 of the casing 10 from the input port 13 </ b> A of the input unit 13, and is accumulated in the lower part of the transfer space 11. Since the transfer space 11 and the storage space 61 are separated by the right isolation wall 81R and the left isolation wall 81L, the transfer object M put into the transfer space 11 is not accumulated in the storage space 61. Further, in the area where the plurality of buckets 70 pass while circulating in the lower part of the conveyance space 11, the conveyed product M is scooped up by the buckets 70. For this reason, the conveyed product M is not deposited. On the other hand, the conveyed product M is not picked up by the bucket 70 in an area outside the area through which the bucket 70 passes. For this reason, the conveyed product M is piled up diagonally upward. However, it is considered that the position where the conveyed product M is accumulated obliquely upward is close to the region through which the bucket 70 passes, and thus collapses before interfering with the driven unit 40.

[Effect of bucket conveyor 100]
According to the bucket conveyor 100, the isolation walls 81 </ b> R and 81 </ b> L are disposed between the transport space 11 and the accommodation space 61. The driven portion 40 is movable in the vertical direction with the driven shaft 42 penetrating through the first openings 83 of the isolation walls 81R and 81L. For this reason, the conveyed product M thrown into the conveyance space 11 is blocked by the separating walls 81R and 81L and is difficult to be accumulated in the accommodating portion 60. In addition, since the conveyed product M deposited in the lower portion of the conveyance space 11 is scooped up by the bucket 70, the driven unit 40 is unlikely to ride on the accumulated conveyed product M. Therefore, it can suppress that the driven part 40 rides on the conveyed conveyance M, can take-up adjustment smoothly, and can maintain the tension | tensile_strength of chain CA and CB appropriately.

  According to the bucket conveyor 100, the closing plates 85 </ b> R and 85 </ b> L close the first opening 83 provided in the isolation walls 81 </ b> R and 81 </ b> L above and / or below the driven shaft 42. For this reason, the conveyed product M thrown into the conveyance space 11 is blocked by the isolation walls 81R and 81L and the blocking plates 85R and 85L, and thus is difficult to be deposited in the storage unit 60. Therefore, it can suppress that the driven part 40 rides on the conveyed conveyance M, can take-up adjustment smoothly, and can maintain the tension | tensile_strength of chain CA and CB appropriately.

  According to the bucket conveyor 100, the closing plates 85R and 85L are arranged on the surfaces 81RE and 81LE on the driven bearing portion 44 side with respect to the separating walls 81R and 81L, and the driven portion 40 includes the driven bearing portion 44 and the closing plates 85R and 85L. It has the connection part 87 which connects 85L. For this reason, it is easy to attach the closing plates 85R and 85L.

  According to the bucket conveyor 100, the weight 48 is disposed at a position sandwiched between the plurality of driven sprockets 46A and 46B. Since the conveyed product M deposited in the lower part of the conveyance space 11 is scooped up by the bucket 70, the accumulated conveyed product M is prevented from interfering with the weight 48. Therefore, it can suppress that the driven part 40 rides on the conveyed conveyance M, can take-up adjustment smoothly, and can maintain the tension | tensile_strength of chain CA and CB appropriately.

  According to the bucket conveyor 100, the driven boss 47 is substantially circular when viewed from the axial direction of the driven shaft 42 and has substantially the same outer diameter as the weight 48. By increasing the weight of the driven boss 47, the weight of the driven portion 40 can be secured regardless of the amount of the weight 48. Therefore, take-up adjustment can be performed without increasing the amount of the weight 48, and the tensions of the chains CA and CB can be properly maintained.

  According to the bucket conveyor 100, the outer diameter R1 of the center portion of the driven shaft 42 is larger than the outer diameter R2 of the portion where the driven shaft 42 is supported by the driven bearing portion 44. By increasing the outer diameter R1 of the central portion of the driven shaft 42 to increase the weight, the weight of the driven portion 40 can be secured regardless of the amount of the weight 48. Therefore, take-up adjustment can be performed without increasing the amount of the weight 48, and the tensions of the chains CA and CB can be properly maintained.

[Modification]
The bucket conveyor 100 according to the present invention is not limited to the present embodiment described above. For example, the shape of the casing 10 is not limited to the shape of this embodiment.

  The shape and number of the weights 48 and the shape of the driven boss 47 of the driven sprockets 46A and 46B are merely examples, and are not limited to those of this embodiment.

  As mentioned above, although embodiment of this invention was described, embodiment mentioned above is only the illustration for implementing this invention. Therefore, the present invention is not limited to the above-described embodiment, and can be implemented by appropriately modifying the above-described embodiment without departing from the spirit thereof.

100 Bucket conveyor 10 Casing 11 Transport space 13A Input port 15A Discharge port 18 Head frame main body 20 Drive unit 22 Drive shaft 24A, 24B Drive sprocket 26 Electric motor 40 Drive unit 42 Drive shaft 44 Drive bearing unit 46A, 46B Drive sprocket 48 Weight 50 Tail frame main body 60 Storage unit 61 Storage space 70 Bucket 83 First opening 81R, 81L Separation wall CA, CB Chain M

Claims (6)

A casing that extends in the vertical direction and has a conveyance space inside,
A drive unit disposed on an upper portion of the casing;
A follower disposed at a lower portion of the casing;
A plurality of chains arranged in the transport space and connecting the drive unit and the driven unit;
A plurality of buckets supported by the plurality of chains and circulated in the up and down direction in the transport space together with the chains;
With
The casing is
A casing main body constituting the transfer space;
A pair of storage portions having a storage space that is disposed so as to face in the left-right direction in the lower part of the casing main body, with the direction intersecting the vertical direction as the left-right direction,
An insertion port that is arranged at the lower part of the casing main body, and is used to input a conveyed product into the lower part of the conveyance space,
A discharge port that is disposed at an upper portion of the casing main body and discharges a conveyed product from the conveyance space to the outside;
Have
The drive unit is
A drive shaft disposed in an upper portion of the conveyance space and extending in the left-right direction;
A plurality of drive sprockets that are supported by the drive shaft at intervals in the left-right direction and on which the plurality of chains are wound respectively;
A drive source for driving the drive sprocket via the drive shaft;
Have
The follower is
A driven shaft that is disposed in the lower portion of the transport space and extends in the left-right direction, and both end portions are respectively positioned in the accommodation space;
A pair of driven bearing portions that support both ends of the driven shaft and are positioned in the accommodation space;
A plurality of driven sprockets positioned in the conveyance space, supported by the driven shaft at intervals in the left-right direction, and wound with the plurality of chains, respectively;
A weight supported by the driven shaft and positioned in the transfer space;
Have
The casing further includes:
An isolation wall disposed between the transfer space and the accommodation space;
The isolation wall has a first opening that extends in the vertical direction and through which the driven shaft passes,
The driven portion is movable in the vertical direction with the driven shaft penetrating the first opening.
Bucket conveyor. The bucket conveyor according to claim 1,
The casing further includes:
Above and / or below the driven shaft, it has a closing plate that closes the first opening,
The closing plate is movable in the vertical direction together with the follower.
Bucket conveyor. The bucket conveyor according to claim 2,
The closing plate is disposed on a surface of the driven bearing portion side with respect to the isolation wall,
The driven portion has a connecting portion that connects the driven bearing portion and the closing plate;
Bucket conveyor. The bucket conveyor according to any one of claims 1 to 3,
The weight is disposed at a position sandwiched between the plurality of driven sprockets.
Bucket conveyor. The bucket conveyor according to claim 4,
As seen from the axial direction of the driven shaft, the weight is circular and is disposed inside a locus through which the bucket circulates,
The driven sprocket has a driven boss for connecting to the driven shaft,
The driven boss is substantially circular when viewed from the axial direction of the driven shaft, and has an outer diameter substantially the same as the weight.
Bucket conveyor. The bucket conveyor according to any one of claims 1 to 5,
The outer diameter of the center portion of the driven shaft is larger than the outer diameter of the portion where the driven shaft is supported by the driven bearing portion.
Bucket conveyor.

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