JP4064363B2 - Belt conveyor skirt structure - Google Patents

Description

  The present invention relates to a skirt structure of a belt conveyor that conveys a conveyed product such as powdered fluid, and more particularly to measures against uneven wear of the conveyor belt and reduction of leakage of the conveyed product.

  In a skirt structure of a conventional belt conveyor in which a conveyed product is conveyed from a skirt to a conveyor belt, a skirt iron plate and a skirt rubber attached to the skirt iron plate are used in order to prevent the conveyed item from leaking, that is, scattered and dropped. By passing the skirt rubber through a path along the way the conveyed product is conveyed from the skirt to the conveyor belt, the gap between the skirt iron plate and the conveyor belt is sealed to prevent the conveyed item from being scattered and dropped.

  For example, Patent Document 1 discloses a belt conveyor in which a skirt rubber is provided on a skirt plate so as to contact the belt.

However, in the skirt structure of the belt conveyor, the frictional resistance between the skirt rubber and the conveyor belt causes both to wear, and the sealing between the skirt rubber and the conveyor belt deteriorates. Furthermore, there is a problem that the conveyor belt must be frequently replaced.
JP-A-7-277439 (FIG. 1)

  An object of the present invention is to provide a belt conveyor skirt structure that solves such problems, improves the sealing between the skirt and the conveyor belt, prevents the fall of the conveyed product, and reduces uneven wear of the conveyor belt. It is to be.

The present invention solves the above problems by the following means. That is, the invention of claim 1 is a belt conveyor skirt structure in which a conveyed product is conveyed from a skirt entrance / exit to a conveyor belt, and a shape changing member having a substantially U-shaped cross section having a side surface and a bottom surface of the conveyor belt; A sealing member provided between the skirt entrance / exit part and the side surface part of the conveyor belt, and a pressing member that presses the side part of the conveyor belt against the skirt entrance / exit part. The holding member is formed on the inside of a pair of mounting brackets that are rotatably provided while pressing the belt conveyor against the sealing member from the outside of the skirt portion. A plurality of pivot shafts are rotatably mounted between the upper part and the stand, and pass through the middle of the pivot shafts. Providing a skirt structure of the belt conveyor, characterized by comprising positioning bolts are provided in the rotation center direction.

According to the above configuration, since the conveyor belt is formed in a substantially U-shaped cross section, and the sealing member is provided between the skirt entrance and exit and the side surface of the conveyor belt, the conveyed product is in the center of the conveyor belt. It is possible to prevent the conveyed product from being scattered and dropped from between the skirt entrance / exit part and the conveyor belt. Further, the inclination of the rotating shaft is adjusted by adjusting the positioning bolt, and the inclination of the mounting bracket is adjusted.

The invention of claim 2 is the skirt structure of the belt conveyor according to claim 1, wherein said shape changing member is formed of a vertical roller provided inside of a pair of mounting brackets provided rotatably on both sides of the conveyor belt In addition , the belt bracket skirt structure is characterized in that a width adjusting turnbuckle for adjusting the distance between the mounting brackets is bridged at the upper end of the mounting bracket by a screw structure.

According to the above configuration, the distance between the scissors rollers is adjusted via the pair of mounting brackets by adjusting the screw structure of the width adjusting turnbuckle, and the shape of the conveyor belt is held in a substantially U-shaped cross section.

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According to the present invention of claim 1, to improve the sealing property between the side surface portion of the skirt entrance portion and the conveyor belt, it is possible to reduce uneven wear of the conveyor belt while preventing scattering dropping conveyed, together , Ru can be adjusted inclination of the mounting bracket by adjusting the inclination of the rotating shaft by adjusting the positioning bolt.
According to the second aspect of the present invention, the distance between the scissors rollers can be adjusted via the pair of mounting brackets by the screw structure of the width adjusting turnbuckle, and the shape of the conveyor belt is accurately made into a substantially U-shaped cross section. Can be held.

  Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.

  The skirt structure of the belt conveyor according to the first embodiment of the present invention will be described with reference to FIGS.

  First, the outline of the skirt structure of the belt conveyor according to the first embodiment of the present invention will be described with reference to FIG. 1, FIG. 2, FIG. 3 and FIG.

  FIG. 1 is a partial cross-sectional view of the belt conveyor skirt structure according to the first embodiment of the present invention at the position of the pressing member, and FIG. 2 is a belt conveyor skirt structure according to the first embodiment of the present invention. FIG. 3 is a view showing a partial cross-sectional view at the position of the reed roller, and FIG. 3 is a view showing the arrangement of the conveyor belt, reed roller, and skirt entrance / exit part in the skirt structure of the belt conveyor according to the first embodiment of the present invention. Is a plan view, and (b) is a side view. FIG. 4 is a partial perspective view of the position adjusting member 7 in the skirt structure of the belt conveyor according to the first embodiment of the present invention.

As shown in FIG. 2, the belt conveyor skirt structure 1 according to the first embodiment of the present invention mainly includes a conveyor belt 3, a reed roller 4 as a shape changing member, and a support roller 9 as a support member. ing. The scissors roller 4 which is a shape changing member is for lifting the side surface portion 32 of the conveyor belt 3 in the vertical direction (upper side in FIG. 2) to make the conveyor belt 3 have a substantially U-shaped cross section. The support roller 9 supports the bottom surface portion 33 of the conveyor belt 3 and holds the substantially U-shaped cross section of the conveyor belt 3. The width of the skirt entrance / exit part 2 is preferably set to 0.7 of the width of the conveyor belt 3. Here, the “width of the conveyor belt 3” refers to the width when the conveyor belt 3 is extended and flattened.

  The scissors roller 4 is rotatably attached to the attachment plate 41, and the attachment plate 41 is provided inside the side surface of the attachment bracket 42 provided on the attachment base 43 so as to be rotatable.

  The mounting base 43 is attached to the upper part of the stand 10, and the stand 10 is provided on the upper surface of the conveyor frame 11. The mounting bracket 42 and the saddle roller 4 are provided on both sides of the conveyor belt 3, and a width adjusting turnbuckle 8 is used as a distance adjusting member between the pair of mounting brackets 42 so as to be hooked on the engaging portion 81 inside the upper end. It is bridged.

  The width adjusting turnbuckle 8 as the distance adjusting member is for adjusting the distance between the pair of mounting brackets 42. The width adjusting turnbuckle 8 is provided with a buckle 83 in the center thereof, and a pair of hook portions 82 are attached to both ends of the buckle 83 via a screw structure. Therefore, the distance between the pair of mounting brackets 42 can be adjusted by adjusting the distance between the buckle 83 and the hook portion 82 by adjusting the screw structure.

  The support roller 9 is rotatably attached to the support base 91, and the support base 91 is attached to the upper portion of the stand 10 in the same manner as the attachment base 43.

  Next, the details of the skirt entrance / exit portion 2, the sealing member 5, the pressing member 6 and the position adjusting member 7 of the skirt structure of the belt conveyor according to the first embodiment of the present invention will be described with reference to FIG.

A sealing member 5 is attached to the outside of the skirt entrance / exit part 2 connected to the skirt 21 to eliminate a gap between the skirt entrance / exit part 2 and the side surface part of the conveyor belt 3 to form a sealing structure. The sealing member 5 is made of a polymer material having a low friction coefficient, and reduces the frictional force between the skirt entrance / exit part 2 and the side surface part of the conveyor belt 3 so that the conveyor belt 4 can be driven easily.
The material used for the skirt entrance / exit part 2 is a material having excellent slidability, and PA6 (6 nylon) (MC nylon-MC703 manufactured by Nippon Polypenco Co., Ltd.) is used in this embodiment.

  Next, the detailed structure regarding the pressing member 6 provided on the outer side of the conveyor belt 3 for pressing the side surface portion 32 of the conveyor belt 3 against the sealing member 5 will be described.

  In this embodiment, the presser member 6 is composed of a presser plate to which a polymer material having a low friction coefficient is attached, and is designed so that the frictional force between the presser member 6 and the side surface portion of the conveyor belt 4 is reduced. ing. This presser plate is particularly effective in the low speed region of the belt conveyor. A position adjustment member 7 for adjusting the position of the presser member 6 is provided on the back surface of the presser member 6.

  The pressing member 6 is attached to the member attachment plate 71 of the position adjusting member 7, the member attachment plate 71 is attached to the attachment member 74, and the attachment member 74 is attached to a rotation member 75 that is rotatably provided to the attachment bracket 72. Is provided. Accordingly, the member mounting plate 71 can be rotated by the rotating member 75. Further, the mounting bracket 72 is rotatably attached to a fixed base 792 provided on the stand 10.

  A first rotation shaft 76 is rotatably attached to the upper portion of the mounting bracket 72, and a second rotation shaft 77 is rotatably provided at the end of the first rotation shaft 76. The end of the two rotation shafts 77 is rotatably attached to an outer mounting base 78 fixed to the stand 10. Further, a positioning bolt 79 is attached to the center of the mounting bracket 72 in the fixed base 792 through the middle of the second rotation shaft 77 and is biased outward by a buffer spring 791. That is, it is urged toward the nut 794 provided on the positioning bolt 79. Therefore, by adjusting the positioning bolt 79, that is, by rotating the nut 794, the inclination of the first rotating shaft 76 and the second rotating shaft 77 is adjusted, and further, the inclination of the mounting bracket 72 is adjusted. become.

  As shown in FIG. 4, the position adjusting member 7 is provided side by side with the reed roller 4 in the traveling direction of the conveyor belt 3. That is, as shown in FIG. 3, the skirt entrance / exit part 2 is located at a position where the side rollers 4 on both sides of the conveyor belt 3 do not exist.

Next, the operation state of the position adjusting member 7 will be described with reference to FIGS.
FIG. 5 is a partial cross-sectional view showing a state in which the presser member is closed in the skirt structure of the belt conveyor according to the first embodiment of the present invention, and FIG. 6 is a skirt of the belt conveyor according to the first embodiment of the present invention. It is a partial sectional view showing the state where one presser member in the structure is opened.

  FIG. 5 shows that the second rotating shaft 77 and the first rotating shaft 76 are rotated inward by adjusting the positioning bolt 79, the mounting bracket 72 is set in the vertical direction, and the conveyor belt 3 is strongly pressed inward by the pressing member 6. It is in a state of being. On the other hand, the right pressing member 6 in FIG. 6 is in a state in which the second rotating shaft 77 and the first rotating shaft 76 are bent outward by the adjustment of the positioning bolt 79 and the mounting bracket 72 is tilted outward and opened. Show.

  Thus, the movement of the pressing member 6 can be adjusted by the operation of the position adjusting member 7. In particular, in the opened state of FIG. 6, the sealing member 5 and the pressing member 6 can be easily replaced.

  The skirt doorway 2 in the skirt structure 1 of the belt conveyor according to the first embodiment of the present invention is provided at the lower portion of the chute 22 as shown in FIG. That is, gravel and loose articles as conveyed items are conveyed and carried into the chute 22 by an external bulldozer, and the skirt entrance / exit portion 2 is provided below the chute 22 and conveyed by a plurality of conveyor belts 3 and 3. In FIG. 12, the configuration of the apparatus such as the reed roller 4 other than the skirt entrance / exit part 2 is omitted.

  Next, the operation of the belt conveyor skirt structure 1 according to the first embodiment of the present invention having the above-described configuration will be described.

  As shown in FIG. 1, since the sealing member 5 is attached to the outside of the skirt entrance / exit portion 21 located at the lower end of the skirt 2 and is pressed by the presser member 6 from the outside of the side surface portion 32 of the conveyor belt 3, 21 and the side surface of the conveyor belt 4 are sealed without a gap.

  Further, as shown in FIG. 2, the conveyor belt 3 is formed in a substantially U-shaped cross section with the side surface portion 32 bent more inward by the scissors rollers 4 and 4 provided on both sides. The distance between the hook portion 82 and the buckle 83 is adjusted by rotating the width adjustment turnbuckle 83 as the distance adjustment member 8 according to the width dimension of the conveyor belt 3 as appropriate, and the mounting brackets 42 and 42 are inclined. The distance between the reed rollers 4 and 4 is adjusted.

  In this way, the conveyor belt 3 having a substantially U-shaped cross section is driven and moved by the drum 31. As shown in FIG. 12, gravel and loose articles as conveyed items are conveyed and carried into the chute 22 by an external bulldozer. Thereafter, the conveyed product is conveyed to the skirt doorway 2.

  At this time, since the conveyor belt 3 has a substantially U-shaped cross section, when the conveyed product is dropped from the skirt entrance / exit portion 2 to the conveyor belt 3, the conveyed product is conveyed to a substantially central portion of the conveyor belt 3. Become. Therefore, uneven wear of the conveyor belt 3 can be prevented without the conveyed product scattering.

  Further, since there is no gap between the skirt entrance / exit part 2 and the side part 32 of the conveyor belt 3, there is no gap between the skirt entrance / exit part 2 and the side part 32 of the conveyor belt 3. The scattering fall can be prevented.

  Since the sealing member 5 between the skirt entrance / exit part 2 and the side part 32 of the conveyor belt 3 is made of a polymer material having a low coefficient of friction, the friction between the conveyor belt 3 and the sealing member 5 is relatively small. The conveyor belt 3 can be driven smoothly. Similarly, since a polymer material having a low friction coefficient is used for the surface portion of the pressing member 6, the friction between the conveyor belt 3 and the surface portion of the pressing member 6 is relatively small, and the conveyor belt 3 can be made smooth. It can be driven.

  Further, in this embodiment, since the lower part of the conveyor belt 3 is supported by the support roller 9, the cross section of the conveyor belt 3 can be obtained even when a large number of conveyed items are conveyed or a strong impact is applied to the conveyed items. A substantially U shape can be maintained.

The skirt structure of the belt conveyor according to the second embodiment of the present invention will be described with reference to FIG.
FIG. 7 is a partial cross-sectional view of the press roller of the belt conveyor skirt structure according to the second embodiment of the present invention. Unlike the first embodiment, the pressing member is constituted by a pressing roller 6.

  Since the pressing member is constituted by the pressing roller 6, the friction with the side surface portion of the conveyor belt 3 can be further reduced by the rotating action of the pressing roller 6, and the conveyor belt 3 can be driven smoothly. In particular, the presser roller 6 is highly effective when used in a high speed range.

  A skirt structure of a belt conveyor according to a third embodiment of the present invention will be described with reference to FIG.

  FIG. 8 is a partial cross-sectional view at the position of the press roller of the skirt structure of the belt conveyor according to the third embodiment of the present invention. Unlike the first and second embodiments, the support member 9 that supports the oblique portion of the conveyor belt 3 is provided. A support roller is used as the support member 9.

  A mounting bracket 72 rotatably attached to the fixed base 792 has a bent shape, and a presser roller 6 as a presser member and a support roller 9 as a support member are provided inside. An intermediate member 793 extending outward is fixed to the bent portion of the bent mounting bracket 72, and a positioning bolt 79 provided rotatably on the outer mounting base 78 is attached to the intermediate member 793. A buffer spring 791 is attached to the positioning bolt 79 together with a nut 794, and an intermediate member 793 is biased. Therefore, by adjusting the nut 794 and changing the position of the intermediate member 793 and changing the inclination of the mounting bracket 72, the positions of the presser roller 6 and the support roller 9 can be adjusted more accurately.

  For this reason, it becomes possible to hold | maintain the conveyor belt 3 more correctly in cross-sectional substantially U shape.

A skirt structure of a belt conveyor according to a fourth embodiment of the present invention will be described with reference to FIG.
FIGS. 9A and 9B are partial cross-sectional views at the position of the press roller of the belt conveyor skirt structure according to the fourth embodiment of the present invention. FIG. 9A shows a state in which the press roller is closed, and FIG. Indicates open state.

  Unlike the third embodiment described above, in the fourth embodiment of the present invention, the first rotating shaft 76 and the second rotating shaft 77 are rotatably provided outside the bent portion of the mounting bracket 72. Yes. The second rotation shaft 77 is rotatably attached to an outer mounting base 78 provided on the stand 10. A positioning bolt 79 is provided at an intermediate position between the first rotation shaft 76 and the second rotation shaft 77, and the inclination of the first rotation shaft 76 and the second rotation shaft 77 is adjusted by adjusting a nut (not shown). The roller 6 and the support roller 9 are opened and closed. Therefore, the opening / closing positions of the pressing roller 6 and the supporting roller 9 can be set more stably depending on the shape of the conveyor belt 3 and the like.

A skirt structure of a belt conveyor according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a partial side view showing the skirt structure of the belt conveyor according to the fifth embodiment of the present invention.
In the skirt structure of the belt conveyor according to the fifth embodiment of the present invention, the support member 9 that supports the oblique portion of the conveyor belt 3 is supported by the pressing member 6 that presses the side surface portion 32 of the conveyor belt 3 against the skirt entrance / exit portion 2. On the other hand, they are arranged in steps.

  Accordingly, the supporting member (supporting roller) 9 that supports the oblique portion of the conveyor belt 3 and the pressing member (pressing roller) 6 that presses the side surface portion 32 of the conveyor belt 3 against the skirt entrance / exit portion 2 are stepped, that is, staggered. Therefore, since the shape of the conveyor belt 3 can be adjusted by the members arranged in steps, the conveyor belt can be stably made into a substantially U-shaped cross section.

A skirt structure of a belt conveyor according to a sixth embodiment of the present invention will be described with reference to FIG.
FIG. 11 is a partial sectional view of the skirt structure of the belt conveyor according to the sixth embodiment of the present invention. A feature is that a skirt rubber is used as the sealing member 5. This structure can be employed by an inexpensive method when used in a high speed range.
(Modification) The material used for the skirt doorway 2 may be any other material as long as it has excellent sliding properties. For example, POM (polyacetal), PET (polyethylene terephthalate), PEEK (polyetheretherketone), PAI (polyamideimide) and the like may be used. Further, an inexpensive resin such as PE or PP may be used. A solid lubricating coating may also be applied. Fluorine resin, molybdenum disulfide, or DLC (diamond-like carbon) may be used.
Further, although the skirt structure of the belt conveyor according to the present invention is applied, it can be applied to the skirt entrance / exit portion 2 in the belt feeder 3 as shown in FIG.

It is a partial cross section figure in the position of the pressing member of the skirt structure of the belt conveyor which concerns on 1st Example of this invention. It is a partial cross section figure in the position of the scissors roller of the skirt structure of the belt conveyor which concerns on 1st Example of this invention. It is a figure which shows arrangement | positioning of the conveyor belt in the skirt structure of the belt conveyor which concerns on 1st Example of this invention, a reed roller, and a skirt entrance / exit part, (a) is a top view, (b) is a side view. It is a partial perspective view of the position adjustment member in the skirt structure of the belt conveyor which concerns on 1st Example of this invention. It is a partial cross section figure which shows the state which the pressing member in the skirt structure of the belt conveyor which concerns on 1st Example of this invention closed. It is a partial sectional view showing the state where one presser member in the skirt structure of the belt conveyor concerning the 1st example of the present invention opened. It is a partial cross section figure in the position of the press roller of the skirt structure of the belt conveyor which concerns on 2nd Example of this invention. It is a partial cross section figure in the position of the press roller of the skirt structure of the belt conveyor which concerns on 3rd Example of this invention. It is a partial cross section figure in the position of the press roller of the skirt structure of the belt conveyor which concerns on 4th Example of this invention, (a) shows the state which the press roller closed, (b) shows the state which the press roller opened. Show. It is a partial side view which shows the skirt structure of the belt conveyor which concerns on 5th Example of this invention. It is a partial cross section figure of the skirt structure of the belt conveyor which concerns on 6th Example of this invention. It is a schematic diagram which shows the site | part to which the skirt structure of the belt conveyor which concerns on 1st Example of this invention is applied. It is a schematic diagram which shows the site | part to which this invention can be applied in a belt feeder.

Explanation of symbols

1 Belt conveyor skirt structure 2 Skirt doorway 21 Skirt 22 Chute 3 Conveyor belt (belt feeder) (feeder belt)
31 Drum 32 Side surface 33 Bottom surface 4 Shape change member (saddle roller)
41 Mounting plate 42 Mounting bracket 43 Mounting base 5 Sealing member 51 Presser plate 52 Fixing bracket 6 Presser member (presser plate) (presser roller)
7 position adjusting member 71 member mounting plate 72 mounting bracket 73 adjusting bolt 74 mounting member 75 rotating member 76 first rotating shaft 77 second rotating shaft 78 outer mounting base 79 positioning bolt 791 buffer spring 792 fixing base 793 intermediate member 794 Nut 8 Distance adjustment member (Turn buckle for width adjustment)
81 engaging portion 82 hook portion 83 buckle 9 support member (support roller)
91 Support stand 10 Stand 11 Conveyor frame

Claims (2)

In the skirt structure of the belt conveyor in which the conveyed product is conveyed from the skirt entrance / exit to the conveyor belt,
A shape changing member having a substantially U-shaped cross section having a side surface portion and a bottom surface portion of the conveyor belt, a sealing member provided between the skirt doorway portion and the side surface portion of the conveyor belt, and the conveyor belt A pressing member that presses the side surface against the skirt doorway,
The sealing member is formed of a polymer material having a low friction coefficient, and the pressing member presses the belt conveyor against the sealing member from the outside of the skirt portion and is provided inside a pair of mounting brackets that are rotatably provided. The mounting bracket has a plurality of rotating shafts rotatably attached between an upper portion of the mounting bracket and a stand, and a positioning bolt is provided in the direction of the rotation center through the middle of the rotating shaft. Characteristic belt conveyor skirt structure. In skirt structure of the belt conveyor according to claim 1, together with the shape changing member is formed from a vertical roller provided inside of a pair of mounting brackets provided rotatably on both sides of the conveyor belt, the mounting bracket A belt conveyor skirt structure in which a width adjustment turnbuckle for adjusting the distance between the mounting brackets is bridged by a screw structure at the upper end of the belt conveyor.

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