JP2009196722A - Conveyor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveyor device capable of efficiently conveying and discharging a transported article placed on a conveyor chain to a discharge port by a simple structure and certainly conveying even a broken piece not properly discharged and remained on the conveyor chain toward the discharge port. <P>SOLUTION: The conveyor device has a first receiving plate 20a auxiliarily provided on a lower neighborhood to an advancement passage portion 16a of the conveyor chain 16 advancing in a direction from a lead-in end to a lead-out end with the placed transported article 11 with a predetermined distance. The device is provided with a second receiving plate 20b auxiliarily provided at a lower neighborhood to a return passage portion 16b of the conveyor chain 16 advancing in a direction from the lead-out end to the lead-in end with a predetermined distance. The device is provided with a third receiving plate 54 auxiliarily provided at an outer neighborhood of a fold-back portion of the conveyor chain turned around from the advancement passage portion to the return passage portion by a lead-in end side roller with a predetermined distance. A border portion of the second receiving plate and the third receiving plate is continuously provided without a clearance. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a conveyor device for conveying metal, wood, plastic and other waste materials.

  Conventionally, as a conveyor-type transport system for industrial waste represented by metal scrap, wood pieces, plastic pieces, rubber pieces and mixtures thereof, for example, there is the one shown in FIG. In this transport system 10, a hopper 12 into which a transport object 11 such as a piece of wood is put, and a transport object 11 guided to drop from the hopper 12 are placed and transported toward a transport outlet 32. And a second conveyor device 24 that is disposed below the first conveyor device 14 and collects fragments and the like of the transported article 11 that falls from the first conveyor device 14 and conveys them to the carry-out port. Furthermore, a drive device 30 for driving these two conveyor devices and a discharge port 32 for discharging the transported material 11 below the discharge end of the first conveyor device 14 are integrally assembled on the main body 34. Yes.

  The hopper 12 is disposed above a first conveyor device 14 to be described later, and the transported material 11 is introduced from the upper opening, and the transported material 11 is guided to drop and discharged from the lower opening. Further, the hopper 12 controls the amount of the transported material 11 to be released by raising and lowering the flow rate adjusting plate 12a provided on the discharge opening 30 side portion of the lower opening.

  In the first conveyor device 14, a conveyor chain 16 to which a drag chain or the like is connected endlessly is stretched around a pair of rollers 18a and 18b. The unloading end side roller 18 a arranged in the direction of the transport destination of the transported object 11 has a sprocket shape, and its rotation shaft is rotatably supported at a predetermined position of the main body 34. The carry-out end side roller 18a is rotationally driven by the driving device 30 to move the conveyor chain 16.

  On the other hand, the carry-in end side roller 18b on the side on which the article 11 is placed is formed in a disk shape so that the conveyor chain 16 can be passed over. Further, as shown in FIG. 7, the bearing member 19 in which the long hole 19c is formed by the upper metal fitting 19a and the lower metal fitting 19b arranged in parallel is assembled integrally with the main body 34, and the rotation shaft of the carry-in end side roller 18b. 18c is supported by the bearing member 19 so as to be rotatable and movable in the horizontal direction. Specifically, the rotary shaft 18c is inserted and fixed to the inner ring of the ball bearing 19d, and the outer ring is held by the bearing member 19 so as to be slidable in the long hole 19c in the horizontal direction.

  Further, the first conveyor device 14 has a configuration capable of adjusting the tension of the conveyor chain 16 by shifting the position of the carry-in roller 18a to vary the distance from the carry-out roller 18a. As shown in FIG. 7, the tension adjusting mechanism 22 includes a rod-shaped member 22a, a coiled spring 22b, and a bolt 22c. One end of the rod-like member 22a integrally connected to the head of the bolt 22c is screwed to a nut member (not shown) of the bearing member 19 that supports the rotation shaft 18c of the carry-in end side roller 18b. The other end of the rod-like member 22a is inserted through a through hole formed in the casing side plate 34b and protrudes outside the casing, and a spring 22b is inserted through the protruding portion. The spring 22b is sandwiched between the head of the bolt 22a at the end of the rod-like member 22a and the outer surface of the housing side plate 34b in a compressed state. The degree of compression can be adjusted by the tightening amount of the bolt 22c.

  In this state, the elastic force of the spring 22b acts in a direction that pulls the carry-in roller 18b toward the housing side plate 34b, and when the screwing position of the bolt 22a is changed, the carry-in roller 18b is rotated by the rotating shaft 18c. It moves in the horizontal direction within the length of the long hole 19c of the supported bearing 19. For example, by increasing the compression amount of the spring 22b to increase the resilience, the carry-in end roller 18b can be drawn closer to the housing side plate 34b side, and the tension of the conveyor chain 16 can be increased. In the case of a conveyor device provided in parallel in the horizontal direction of a plurality of chain conveyors 16, the tension adjusting mechanism 22 is provided for each chain conveyor 16. Then, when the conveyor chain 16 is loosened due to long-term operation, the tightening amount of the bolt 22c is varied for each chain conveyor 16 to adjust the tension of the conveyor chain 16 to an appropriate state.

  The first conveyor device 14 includes a first receiving plate 20a that is slightly wider than the conveyor chain 16 below the forward path portion 16a of the conveyor chain 16 on which the transport object 11 is placed and proceeds toward the carry-out end. It is attached. The first receiving plate 20a is arranged with a slight space so as not to contact the conveyor chain 16 and prevent its progress.

  Similarly, a second receiving plate 20b that is slightly wider than the conveyor chain 16 is attached below the return path portion 16b in which the conveyor chain 16 advances from the discharge end side to the carry-in end side. Similarly to the first receiving plate 20a, the second receiving plate 20b is arranged with a small space so as not to contact the conveyor chain 16 and prevent its progress.

  As shown in FIG. 6, the second conveyor device 24 disposed below the first conveyor device 14 has an endless conveyor belt 26 with scrapers 26 c attached to the surface at predetermined intervals, as a pair of rollers. It is the one that was handed over. The carry-out side roller 28a is arranged below the carry-out end side roller 28a of the first conveyor device 14 and is rotationally driven by a drive device 30 described later to move the conveyor belt 26. On the other hand, the folding side roller 28b is disposed below the carry-in side roller 18b of the first conveyor device 14, and is rotatably supported.

  Further, the conveyor belt 26 receives the fragments of the transported article 11 dropped from the first conveyor device, and is folded by the forward path portion 26a that is conveyed in the direction of the folding side roller 28b and the folding roller 28b, and is discharged by the discharge port side roller 28a. The return path portion 26b moves in the direction of. The return path portion 26b faces the housing bottom plate 34a with a distance approximately the same as the height of the scraper 26c. Due to such a structure, when the fallen object from the first conveyor device 14 is conveyed to the return side roller 28b by the forward path portion 26b, it falls onto the housing bottom plate 34a and is attached to the return path portion 26b. It moves on the housing bottom plate 34a so as to be scraped off by the scraper 26c, and is eventually discharged to the discharge port 32.

  A drive device 30 having a motor is installed on the housing 34c on the side of the hopper 12. The driving device 30 is connected to the carry-out end roller 18a of the first conveyor device 14 and the discharge-side roller 28a of the second conveyor device 24, and is driven so that the rollers 18a and 28a rotate at a predetermined speed. It is controlled.

  As described above, the conventional transport system 10 includes the second conveyor device 24 in addition to the first conveyor device 14, and collects fragments and the like of the transported material 11 falling from the first conveyor device 14. It is a structure which conveys and discharges to the discharge port 32 which should be discharged | emitted.

Further, as disclosed in Patent Document 1, a machine tool provided with chip discharging means for discharging chips generated by cutting using a chip conveyor provided below the processing table has been proposed. This chip conveyor has a configuration similar to that of the second conveyor device 24 provided in the transport system 10 described above. Chips falling from above are received by the forward path portion of the conveyor, and chips are collected by a metal plate (trough) at the folded portion. The operation of transporting chips to the discharge port with a scraper dropped on the surface and attached to the surface of the return path of the conveyor is substantially the same.
JP 2001-62667 A

  However, the conventional transport system 10 has a structure in which the second conveyor device 24 collects fragments or the like of the transported article 11 dropped from the first conveyor device 14, so that the structure is complicated and large. There was a problem. Accordingly, the cost of the transport system itself increases, and the cost for securing consumables and power increases. Moreover, since it is the structure by which two conveyor apparatuses are piled up and arranged in the vertical direction, the height of the conveying apparatus including a hopper becomes high. If the position of the upper opening of the hopper is too high, there may be a problem that a heavy machine such as an excavator cannot input the transported object 11. Moreover, since falling objects are scattered inside the housing in which the two conveyor devices are housed, each part of the device is easily soiled, and it is necessary to frequently perform cleaning and other maintenance, which is very complicated.

  On the other hand, in the case of the conveyor device provided in the chip discharging means of the machine tool disclosed in Patent Document 1, it can be transported if it is small metal scrap such as chips generated by cutting metal, but it is several tens of centimeters It is a transport mechanism that is not suitable for transporting metal scraps, wood pieces, etc. with a size of meters to several meters. In other words, in order to apply this transport mechanic to a system for transporting large packages, the transport system must be enlarged, the strength of each part of the device must be increased, and the drive device must be powered up, which is not realistic. It was.

  The present invention has been made in view of the above-mentioned problems of the background art, and can transport a transported article placed on a conveyor chain with a simple structure to a discharge port efficiently and discharge it. It is another object of the present invention to provide a conveyor device that can reliably transport debris remaining on a conveyor chain toward a discharge port.

  The present invention is a conveyor device for transporting a transported article placed on an endless conveyor chain driven by a pair of rollers to a discharge port, and proceeds with the placed transported article from a carry-in end to a carry-out end. A predetermined distance in the vicinity of the lower part of the forward path portion of the conveyor chain, a first receiving plate provided with a predetermined distance therebetween, and a lower part of the return path portion of the conveyor chain proceeding from the discharge end to the carry-in end. And a third receiving plate provided at a predetermined distance in the vicinity of the outside of the folded portion of the conveyor chain that is redirected from the return path portion to the forward path portion by the carry-in end side roller. The boundary portion between the first receiving plate and the third receiving plate and the boundary portion between the second receiving plate and the third receiving plate are each in a vertically projected state. No gaps in the horizontal direction A conveyor device being.

  And a tension adjusting mechanism for adjusting a tension of the conveyor chain by changing a distance between the carry-in end side roller and the carry-out end side roller constituting the pair of rollers, and the third receiving plate includes the tension adjusting mechanism. Therefore, the position of the conveyor device is changed integrally with the carry-in end roller.

  Further, a transported object that is moved up to the folded-back portion in the vicinity of the lower part of the forward path portion of the conveyor chain and from the terminal end position on the carry-in end side of the first receiving plate to the upper vertex of the carry-in end side roller. Is attached to the conveyor chain forward path portion, and includes a boundary portion between the first receiving plate and the fourth receiving plate, and a third receiving plate and the fourth receiving plate. The boundary portions are conveyor devices that are continuously provided in the horizontal direction with no gaps in the vertical projection state.

  Preferably, a tension adjusting mechanism is provided for adjusting the tension of the chain conveyor by changing the interval between the carry-in end side roller and the carry-out end side roller constituting the pair of rollers, and the third receiving plate and the The four receiving plates are conveyor devices whose positions are changed integrally with the carry-in end side roller by the tension adjusting mechanism.

  According to the conveyor device of the present invention, when wastes represented by metal scrap, wood pieces, plastic pieces, rubber pieces and mixtures thereof are charged, they can be efficiently conveyed and discharged toward the discharge port. it can. Also, debris that has not been properly discharged and remains on the conveyor chain is recovered without dropping downwards, returned to the original place where the goods were loaded, and transported again toward the discharge port for reliable discharge. be able to. Accordingly, a special device such as a debris collecting conveyor device is not required, and a large space is not required for installing an additional receiving plate, so that the conveyor device can be reduced in size and cost can be reduced. Moreover, cleaning and other maintenance are easy without falling objects scattering inside the housing of the apparatus.

  Further, in the tension adjustment of the conveyor chain, the intervals between the plurality of pairs of rollers of the conveyor device can be adjusted integrally, and the tension adjustment work can be easily performed in a short time.

  Hereinafter, an embodiment of a transport system including a conveyor device of the present invention will be described with reference to FIGS. Here, the same configurations as those of the transport system 10 are denoted by the same reference numerals, and description thereof is omitted. As shown in FIG. 1 and FIG. 2, the transport system 50 according to this embodiment has a hopper 12 into which a transport object 11 is put and a transport object 11 guided to drop from the hopper 12 placed thereon, toward a carry-out port. A conveyor device 52 for conveying, a driving device 30 for driving the conveyor device 52, and a discharge port 32 for discharging the transported material 11 below the discharge end of the conveyor device 52, which are integrally assembled on the main body 34. Yes.

  Since the hopper 12 and the drive device 30 in the transport system 50 perform the same operation as that of the conventional transport system 10, description thereof will be omitted.

  In the conveyor device 52, one conveyor chain 16 to which a drag chain or the like is connected endlessly is stretched over a pair of rollers to form one transport lane, and the four transport lanes are provided in parallel. Two wide transport lanes are formed. As shown in FIG. 3, the unloading end side roller 18 a of each conveyance lane has a sprocket shape, is integrally attached to one rotating shaft, and is rotatably supported at a predetermined position of the main body 34. . Then, the carry-out end side roller 18a is rotationally driven by the driving device 30, and moves the conveyor chain 16 of each conveyance lane simultaneously.

  On the other hand, as shown in FIGS. 3 and 4, the carry-in end side roller 18b of each transfer lane is formed in a disk shape so that the conveyor chain 16 can be spanned, and is integrated with one rotating shaft 18c. Is attached. Further, as shown in FIG. 5, both ends of the rotating shaft 18c are inserted and fixed to an inner ring of a ball bearing 19d (not shown), and the outer ring has a structure that can slide in the long hole 19c in the horizontal direction.

  Further, as shown in FIG. 5, the conveyor device 52 has a configuration capable of adjusting the tension of the conveyor chain 16 by shifting the position of the carry-in side roller 18 b to vary the distance from the carry-out side roller 18 a. ing. The operation of the tension adjusting mechanism 22 is the same as that of the first conveyor device 24 described above, but in this embodiment, one rotating shaft 18c is fixed to the plurality of carry-in rollers 18b, As shown in FIG. 1, tension adjusting mechanisms 22 are provided at both ends of the rotating shaft 18c. According to this tension adjustment mechanism 22, for example, when each conveyor chain 16 is loosened due to long-term operation, the tightening amount of the bolt 22c is increased or decreased, and the tension of each conveyor chain 16 is adjusted to an appropriate state at the same time. can do.

  Further, the conveyor device 52 is a first receiving plate that is slightly wider than the conveyance lanes for four rows in the vicinity of the lower portion of the forward path portion 16a of each conveyor chain 16 on which the transport object 11 is placed and travels toward the carry-out end side. 20a is attached and supports the conveying surface of the conveyor chain 16.

  Here, as described in the description of the conventional transport system 10, most of the transported material 11 transported in the forward path portion 16 a is discharged from the carry-out end. There are cases in which it is carried into the forward path portion 16a as it is, for example, by being bitten or hooked into a portion or the like. The 2nd receiving plate 20b, the 3rd receiving plate 54, and the 4th receiving plate 56 play the role which collect | recovers without dropping this fragment etc. which were not discharged | emitted appropriately. Details will be described below.

  A second receiving plate 20b that is slightly wider than the four transport lanes is attached near the lower portion of the return path portion 16b in which the conveyor chain 16 advances from the discharge end side to the carry-in end side. Similarly to the first receiving plate 20a, the second receiving plate 20b also supports the lower surface of the return-side conveyor chain 16.

  In addition, a third U-shaped receiving member that is slightly wider than the four conveyance lanes outside the folded portion where the conveyor chain 16 is turned from the return path portion 16b to the forward path portion 16a by the carry-in end side roller 18b. A plate 54 is attached. The third receiving plate 54 is arranged with a slight space so as not to contact the conveyor chain 16 and prevent its progress.

  Further, a fourth receiving plate 56 is attached from the terminal end of the first receiving plate 20a on the carry-in end side to a position near the upper vertex of the carry-in end side roller 18b. As shown in FIG. 1, the fourth backing plate 56 has a slightly wider shape than the four transport lanes, and has interference with each carry-in end side roller 18b at the carry-in side roller 18b side end. The tongue piece 56a is formed by the cut. The tongue piece 56a is slightly bent in the axial direction of the carry-in end side roller 18b, scrapes off the fragments of the transported material adhering in the axial direction of the carry-in end roller 18b, and drops from the conveyor chain 16 to the rotary shaft 18c. Together with the debris of the object, it is guided to the forward path portion 16a.

  Each receiving plate includes a boundary portion between the second receiving plate 20b and the third receiving plate 54, a boundary portion between the third receiving plate 54 and the fourth receiving plate 56, and the fourth receiving plate 56 and the first receiving plate 56. The boundary portions with the receiving plate 20a are installed without gaps so as to overlap each other in the projected state in the vertical direction. Accordingly, the respective conveying surfaces formed by integrating the receiving plates and the conveyor chain 16 are continuously connected without any breaks, and the fragments of the transported article 11 are continuous without dropping off along the respective conveying surfaces. It can move and is returned to the forward path portion 16a on which the article 11 is placed.

  Note that the fourth receiving plate 56 may be omitted depending on the shape and size of the fragments of the transported object 11. In this case, the first receiving plate 56 is extended to the vicinity of the upper vertex of the carry-in end side roller 18b, and the boundary portion between the third receiving plate 54 and the first receiving plate 56 is overlapped in the horizontal direction. Good.

  As described above, according to the conveyor device 52, the transported object placed on the forward path portion 16 a of the conveyor chain 16 can be efficiently conveyed and discharged toward the discharge port 32. In addition, fragments that have not been properly discharged and remain on the conveyor chain can be recovered without dropping downwards, returned to the original place where the goods were loaded, and transported to the discharge port again and discharged. .

  Further, since the third receiving plate 54 and the fourth receiving plate 56 are integrally attached to the outer ring of the ball bearing that supports the rotation shaft 18c of the carry-in end side roller 18b, the carry-in end is operated by the operation of the tension adjusting mechanism 22. Even when the position of the side roller 18b moves, the third receiving plate 54 and the fourth receiving plate 56 also move together, and the distance from the conveyor chain 16 does not change. In addition, since the boundary of each receiving plate is provided with an overlap exceeding the distance that can be moved in the horizontal direction of the carry-in end side roller 18b, even if the predetermined receiving plate moves, there is a gap in each boundary portion. It does not occur. Accordingly, the state of the conveyance surface formed by the third receiving plate 54 and the fourth receiving plate 56 and the conveyor chain 16 is always maintained at an optimal setting, and each time the tension of the conveyor chain 16 is adjusted, There is no need to set the position again.

  In addition, this invention is not limited to the said embodiment, A conveyor chain is a general purpose conveyor chain, such as a drag chain, a conveyor chain for powder conveyance, and a water treatment conveyor according to the size and form of the transported material 11. A chain can be selected freely. In addition, the number of transport lanes is not limited to four, and the number of transport lanes is not limited to four, and the number of transport lanes may be arbitrarily set in consideration of the amount of transported goods 11, the work space, the width of one conveyor chain 16, and the like. . Moreover, the conveyance distance of a conveyor can be set arbitrarily. When making a conveyance distance long, you may arrange | position the several conveyor apparatus 54 in series so that the outward path part 16b may be formed continuously. Further, the transport surfaces of the forward path portion 16a and the return path portion 16b of the conveyor chain 16 do not need to be horizontal with respect to the traveling direction, and may have an upward slope or a downward slope.

  Moreover, you may comprise so that the space | interval of a pair of roller 18a, 18b over which the conveyor chain 16 is spanned can be set independently for every conveyance lane. Furthermore, each receiving plate is not necessarily a dedicated plate material, and may be configured using the surface of a structure such as a casing or a cover of the conveyor device.

It is a top view of the conveyance system containing the conveyor apparatus of one Embodiment of this invention. It is a side view including the partial cross section of this conveyance system. It is a schematic diagram explaining the structure and operation | movement of this conveyance system. It is the A section enlarged view explaining the structure of the peripheral part of the carrying-in end side roller of FIG. FIG. 4 is an enlarged view of part A for explaining the operation of the tension adjusting mechanism of FIG. 3. It is a schematic diagram explaining the structure and operation | movement of a conveyance system containing the conventional conveyor apparatus. It is the B section enlarged view explaining operation | movement of the tension adjustment mechanism of FIG.

Explanation of symbols

11 Transported object 12 Hopper 16 Conveyor chain 16a Outward path part 16b Return path part 18a Unloading end side roller 18b Loading end side roller 19 Bearing member 20a First receiving plate 20b Second receiving plate 22 Tension adjusting mechanism 30 Driving device 32 Discharge port 34 Main body 50 Conveying system 52 Conveyor device 54 Third receiving plate 56 Fourth receiving plate

Claims (4)

In a conveyor device for transporting a transported article placed on an endless conveyor chain driven by a pair of rollers to a discharge port,
A first receiving plate attached with a predetermined distance in the vicinity of the lower part of the forward path portion of the conveyor chain that proceeds in the direction from the carry-in end to the carry-out end together with the loaded goods;
A second backing plate attached at a predetermined distance in the vicinity of the lower part of the return path portion of the conveyor chain that proceeds in the direction from the discharge end to the carry-in end;
A third backing plate provided at a predetermined distance in the vicinity of the outside of the folded portion of the conveyor chain that is redirected from the return path portion to the forward path portion by the carry-in end side roller;
The boundary part of said 2nd receiving plate and said 3rd receiving plate is continuously provided in the horizontal direction without gap, The conveyor apparatus characterized by the above-mentioned.   A tension adjustment mechanism that adjusts the tension of the conveyor chain by changing the interval between the carry-in end side roller and the carry-out end side roller constituting the pair of rollers, and the third receiving plate is provided by the tension adjustment mechanism, The conveyor device according to claim 1, wherein the position is changed integrally with the carry-in end side roller.   In the vicinity of the lower part of the forward path portion of the conveyor chain, the transported object that is moved up to the folded-back portion is located at the position from the terminal end of the first receiving plate on the carry-in end side to the upper vertex of the carry-in end side roller. A fourth receiving plate that is guided to the forward part of the conveyor chain is attached, and a boundary portion between the first receiving plate and the fourth receiving plate and a boundary portion between the third receiving plate and the fourth receiving plate. 2. The conveyor apparatus according to claim 1, wherein each is positioned without a gap in a vertical projection state. The third receiving plate and the fourth receiving plate are provided with a tension adjusting mechanism that adjusts the tension of the chain conveyor by changing the interval between the carry-in end side roller and the carry-out end side roller constituting the pair of rollers. The conveyor device according to claim 3, wherein the position is changed integrally with the carry-in end side roller by the tension adjusting mechanism.

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