JP6653435B2 - Guide rail - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a guide rail of a drawing member that draws sludge settled in a settling basin.

  A so-called reciprocating type, a so-called chain flight type, and the like are known as a sludge scraping device for scraping sludge settled at the bottom of a settling tank to a sludge pit.

  In a reciprocating sludge scraping device, a scraping member such as a scraper or a shoe is reciprocated in a direction approaching the sludge pit (one side) and in a direction away from the sludge pit (the other side). As a result, the sludge settled at the bottom of the sedimentation basin is gradually swept toward the sludge pit.

  In a chain flight type sludge scraping device, a flight plate as a scraping member is attached to an endless chain partially wound around rotating wheels such as drive wheels and driven wheels, and the endless chain is run to circulate the flight plate. Move. When the endless chain runs from the other end of the sedimentation basin toward the one side, the flight plate attached to the endless chain moves from the other side to one side, thereby causing the sludge settled on the bottom of the pond. It is swept toward the sludge pit. Hereinafter, the direction in which the scraper reciprocates or the direction in which the flight plate moves may be referred to as a moving direction.

  The scraping member moves while sliding on a guide rail fixed to the bottom of the pond. For example, in a reciprocating sludge scraping device, when the scraping member reciprocates, a shoe provided between the scraper and the guide rail slides on the guide rail. In a chain flight type sludge scraping device, a flight plate as a scraping member is generally configured to slide on a guide rail.

  The guide rail extends along the moving direction by arranging a plurality of long guide plates in a longitudinal direction. That is, the plurality of guide plates are arranged in a posture in which the longitudinal direction matches the moving direction. Hereinafter, a direction orthogonal to the moving direction in the horizontal plane may be simply referred to as an orthogonal direction. The orthogonal direction is a direction orthogonal to the longitudinal direction of the arranged guide plate in a horizontal plane.

  The guide plate is generally made of a synthetic resin in consideration of wear resistance, material cost, and the like, and may be deformed in a wavy shape in the longitudinal direction due to expansion due to thermal expansion. If the guide plate is deformed in a wavy shape, only a part of the shoe and the flight plate may slide on the guide plate, and other portions of the shoe and the flight plate may rise from the guide plate. Further, when only a part of the shoe or the like is in sliding contact with the guide plate, uneven wear may occur, in which the part is intensively worn. For this reason, there have been proposed guide rails that attempt to prevent wavy deformation of the guide plate (for example, see Patent Documents 1 and 2).

  In the guide rails described in Patent Literature 1 and Patent Literature 2, a plurality of guide plates are connected at intervals in the longitudinal direction. As a result, a gap is formed between the guide plates, and the gap absorbs the elongation of the guide plate due to thermal expansion, thereby suppressing the wavy deformation of the guide plate.

Japanese Utility Model Publication No. 08-10351 Japanese Patent No. 3107981

  However, the guide rails described in Patent Literature 1 and Patent Literature 2 have a gap between the guide plates, so that when the shoe or the flight plate moves and passes through the gap, The load tends to concentrate on the end in the longitudinal direction of the guide plate, and a shoe or the like may come into contact with this end, and there is a problem that the end in the longitudinal direction of the guide plate is easily worn. Hereinafter, an end in the longitudinal direction of the guide plate may be referred to as an end of the guide plate.

  FIG. 7 is a diagram conceptually illustrating a situation in which a load tends to concentrate on the end portions 91b and 92a of the guide plates 91 and 92 in the guide rails 90 described in Patent Literature 1 and Patent Literature 2. In FIG. 7, the left-right direction corresponds to the longitudinal direction of the guide plates 91 and 92 and the moving direction of the shoe 93, the left side is a direction approaching a sludge pit (not shown) (one side), and the right side is the sludge pit. And the direction perpendicular to the plane of the drawing is the orthogonal direction. Further, in FIG. 7, a portion where the one side guide plate 91 and the other side guide plate 92 are connected with a space therebetween in the longitudinal direction is viewed from the side, and a shoe 93 is provided for these guide plates 91 and 92. Shows a stepwise manner of reciprocating movement between one side and the other side.

  In FIG. 7A, the shoe 93 moves from the other side to the one side toward the sludge pit as indicated by a thick arrow, and when viewed in the orthogonal direction, the lower end 93a on one side is formed by the guide plate 92 on the other side. The state corresponding to the one-side end portion 92a in FIG. When the shoe 93 further moves to one side from this state, the shoe 93 projects from the guide plate 92 on the other side toward the gap C toward the one side, and the portion located on the gap C gradually increases. Eventually, as shown by the solid line, the lower end portion 93a on one side of the shoe 93 contacts the other end portion 91b of the guide plate 91 on one side. Until the shoe 93 moves from the state shown by the dashed line to the state shown by the solid line, the shoe 93 protrudes above the gap C, and the load tends to concentrate on one end 92 a of the guide plate 92 on the other side. . Further, when the lower end 93a on one side of the shoe 93 contacts the other end 91b of the guide plate 91 on one side, an impact load is generated at the contacted portion.

  In FIG. 7B, as shown by the thick arrow, the shoe 93 is further moved to one side, and the lower end 93b on the other side is slightly separated from the one end 92a of the guide plate 92 on the other side. This is indicated by a chain line. When the shoe 93 further moves to one side from this state, the shoe 93 applies a load to the other end 91 b of the one side guide plate 91, and the entire shoe 93 is indicated by a solid line on the one side guide plate 91. Move to the riding position. As described above, until the shoe 93 moves from the state shown by the one-dot chain line to the state shown by the solid line, the load tends to concentrate on the other end 91 b of the one guide plate 91.

  In FIG. 7C, the shoe 93 that has moved to one side moves from one side to the other side as indicated by a thick arrow, and when viewed in the orthogonal direction, the one end 93b is formed on one side of the guide plate 91. Are indicated by the alternate long and short dash line. From this state, until the shoe 93 moves further to the other side and the lower end 93b of the other side passes through the gap C and contacts the one end 92a of the guide plate 92 on the other side as shown by the solid line. 93 protrudes above the gap C, and the load tends to concentrate on the other end 91 b of the guide plate 91 on one side. Further, when the lower end 93b on the other side of the shoe 93 contacts the one end 92a of the guide plate 92 on the other side, an impact load is generated at the contacted portion.

  In FIG. 7D, as shown by the thick arrow, the shoe 93 further moves to the other side, and the lower end 93a on one side is slightly separated from the other end 91b of the guide plate 91 on the one side. This is indicated by a chain line. From this state, until the shoe 93 moves further to the other side, the lower end portion 93a on one side passes through the gap C, and the entire shoe 93 rides on the guide plate 92 on the other side, as indicated by the solid line, the other side. The load tends to concentrate on one end portion 92a of the guide plate 92.

  As described above, when the guide rails described in Patent Literature 1 and Patent Literature 2 are employed in a reciprocating sludge scraper, when the shoe reciprocates, the load concentrates on the end of the guide plate. , The ends are easily worn. When the guide rails described in Patent Literature 1 and Patent Literature 2 are employed in a chain flight type sludge scraper, a flight plate instead of a shoe moves from the other side to the one side on the guide plate. As a result, the states shown in FIGS. 7A and 7B continue. For this reason, similarly to the reciprocating type, the load is concentrated on the end of the guide plate, and the end is easily worn.

  SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a guide rail that is devised so as to prevent a wavy deformation due to elongation of the guide plate and to suppress wear of the end portion of the guide plate.

The guide rail of the present invention that solves the above object, a plurality of guide plates that scrape the sludge settled in the sedimentation basin and the sliding members are in sliding contact with each other at intervals in the longitudinal direction,
Wherein each of the plurality of guide plates state, and are not inclined portion formed obliquely with respect to the longitudinal direction is provided at the end of the longitudinal,
Said guide plate, said longitudinal and in both sides respectively of the outer direction orthogonal in the horizontal plane, and wherein the Rukoto comprises a removable regulating member for regulating the movement in the said direction perpendicular to said guide plate.

  Here, the scraping member may reciprocate on one side (in a direction approaching the sludge pit) and on the other side (in a direction away from the sludge pit) at the bottom of the sedimentation basin. It may move from one side to one side. Further, the guide plate may be one in which a shoe in a reciprocating sludge scraping device is in sliding contact, or a flight plate in a chain flight type sludge scraping device in sliding contact. Further, the guide plate may be made of synthetic resin, and the shoe and the flight plate may be made of metal. Further, the inclined portion may be inclined at an angle of 15 degrees or more and 60 degrees or less with respect to the longitudinal direction.

  According to the guide rail of the present invention, since the plurality of guide plates are connected at an interval in the longitudinal direction, even if the guide plates extend due to thermal expansion, they are generated between the guide plates. The elongation of the guide plate is absorbed by the gap, and the wavy deformation of the guide plate can be suppressed. In addition, since each of the plurality of guide plates has an inclined portion formed at an end in the longitudinal direction, the shoe or the flight plate moves, and the guides are moved. When passing through a gap between plates, the load is easily dispersed in the longitudinal direction by the inclined portion, and a contact load due to contact with a shoe or the like is hardly generated. Thereby, wear of the end of the guide plate can be suppressed.

  In the guide rail of the present invention, the plurality of guide plates may be such that the inclined portions of the adjacent guide plates are inclined in the same direction.

  By doing so, while the shoe and the flight plate move and pass through the gap between the guide plates, the ends of the shoes and the like are easily positioned on the guide plate when viewed in the orthogonal direction. As a result, the concentration of the load applied to the end of the guide plate can be more efficiently avoided.

  Note that the inclined portions of the adjacent guide plates may overlap each other in the orthogonal direction.

Further, in the guide rail of the present invention, before Symbol regulating member is disposed across the guide plate adjacent, it may have an upper regulating portion for covering the guide plate from above.

  By adopting the mode including the regulating member, it is possible to prevent the guide plate from rising with a small number of parts.

  Further, in the guide rail of the present invention, the guide rail may have a side regulating portion located on a side of the guide plate.

  In this way, the displacement of the guide plate in a horizontal plane can be suppressed.

  Further, the guide plate may be provided with a fixing member for fixing the guide plate to the sedimentation basin at a central portion in the longitudinal direction.

  Here, the central portion refers to a portion located at the center when the guide plate is divided into three equal parts in the longitudinal direction. In addition, the position where the guide plate is fixed to the sedimentation basin by the fixing member is preferably as close as possible to the center in the longitudinal direction in the central portion. Further, a plurality of the fixing members may be provided in the central portion.

  By adopting the aspect including the fixing member, it becomes easy to allow the guide plate to extend in the longitudinal direction while fixing the position of the guide plate.

  ADVANTAGE OF THE INVENTION According to the guide rail of this invention, the guide rail which devised to suppress the abrasion of the edge part of a guide plate can be provided, preventing the wave-like deformation | transformation by the elongation of a guide plate.

It is the top view which looked at the sedimentation pond in which the guide rail which was one embodiment of the present invention was installed from the upper part. (A) is a figure which expands and shows the guide rail arrange | positioned at the pond bottom part shown in FIG. 1, (b) is a figure which expands and shows the C part enclosed with the circle of (a), (C) is a cross-sectional view taken along the line DD in (b), and (d) is an enlarged view of a portion E encircled in (c). It is the figure which looked at the mode of replacing a guide board from the side. (A) is a figure which expands and shows the A section enclosed with the circle in FIG. 1, (b) is BB sectional drawing of FIG. FIG. 9 is a diagram conceptually showing a state in which a scraping member reciprocates and its shoes slide on a guide plate of a guide rail. It is a figure which shows the state corresponding to FIG.2 (b) about the modification of the guide rail shown in FIGS. FIG. 7 is a diagram conceptually illustrating a situation in which a load tends to concentrate on an end portion of a guide plate in the guide rails described in Patent Literature 1 and Patent Literature 2.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, an example will be described in which a guide rail of the present invention is applied to a reciprocating sludge scraping apparatus provided with a scraping member that reciprocates at the bottom of a settling tank.

  FIG. 1 is a plan view of a settling basin 8 on which a guide rail 10 according to an embodiment of the present invention is installed, as viewed from above. In FIG. 1, the central part in the longitudinal direction (the left-right direction in the figure) of the sedimentation basin 8 is omitted.

  The sedimentation basin 8 shown in FIG. 1 is a substantially rectangular pond in plan view surrounded by an upstream wall 8a, a downstream wall 8c, and a pair of side walls 8d. The sedimentation basin 8 receives sewage such as sewage or rainwater from a headrace (not shown), sediments the sludge contained in the received sewage at a pond bottom 8f, and drains it from the right side in FIG.

  The settling basin 8 is provided with a guide rail 10, a sludge scraping device 20, and a sludge pit 81 of the present embodiment. In this embodiment, three guide rails 10 extending in the longitudinal direction are provided at the bottom 8f of the sedimentation basin 8, and the sludge pit 81 is provided on the left side of the sedimentation basin 8 in FIG. Hereinafter, the left side (the direction approaching the sludge pit 81) in FIG. 1 may be referred to as one side, and the right side (the direction away from the sludge pit 81) in FIG. 1 may be referred to as the other side. The bottom 8f of the sedimentation basin 8 is slightly inclined so that the water depth of the sedimentation basin 8 increases toward one side. In addition, the sludge collected by the sludge pit 81 is discharged to the outside of the sedimentation basin 8 by a sludge pump (not shown).

  The sludge scraping device 20 includes a plurality of scraping members 3, a connecting member 4 connecting the plurality of scraping members 3, a driving rod 5 for reciprocating the scraping member 3, and a drive rod 5 (not shown) for applying a driving force to the driving rod 5. A drive mechanism and a fixing mechanism 7 for fixing the scraping member 3 to the drive rod 5 and the connecting member 4 are provided.

  The drive mechanism (not shown) includes a motor disposed on the ground, a converter that converts the rotational driving force of the motor into reciprocating operation, a reciprocating rod having one end fixed to an output shaft of the converter, a triangular link, and the like. , A triangular link (not shown) and the drive rod 5 shown in FIG. When the motor (not shown) rotates and the triangular link swings, the drive rod 5 connected to the triangular link moves between the one side and the other side along the guide rail 10 fixed to the pond bottom 8f. Reciprocate. A plurality of scraping members 3 are fixed to the drive rod 5. As the drive rod 5 reciprocates, each scraping member 3 reciprocates between one side and the other side along the guide rail 10. The scraping member 3 reciprocates in the longitudinal direction of the sedimentation basin 8, and the longitudinal direction may be hereinafter also referred to as a moving direction. Further, a direction orthogonal to the longitudinal direction in a horizontal plane may be referred to as an orthogonal direction. Here, the orthogonal direction corresponds to the pond width direction of the sedimentation basin 8. That is, each guide rail 10 extends in the moving direction, and the three guide rails 10 are arranged at intervals in the orthogonal direction.

  FIG. 2A is an enlarged view showing the guide rail 10 arranged at the pond bottom 8f shown in FIG.

  As shown in FIG. 2A, the guide rail 10 has a plurality of long guide plates 11, and the plurality of guide plates 11 are connected at an interval in the longitudinal direction. Note that the longitudinal direction of the guide plate 11 disposed on the pond bottom 8f corresponds to the moving direction, and the orthogonal direction of the guide plate 11 disposed on the pond bottom 8f corresponds to the width direction.

  The guide plate 11 is made of, for example, ultrahigh molecular weight polyethylene having a thickness of about 5 mm, and has a length in the longitudinal direction of about 1500 mm and a length in the orthogonal direction of about 125 mm. Each of the plurality of guide plates 11 is fixed to the pond bottom 8f by an anchor bolt 12, and regulating members 13 are provided on both sides in the orthogonal direction at a position straddling the adjacent guide plates 11, respectively. As the anchor bolt 12, a driving-type plastic anchor or the like, whose tip portion expands when driven, can be used. When the guide plate 11 is divided into three equal parts in the longitudinal direction, the anchor bolt 12 is driven into a portion located at the center thereof. This allows the guide plate 11 to extend in the longitudinal direction while fixing the guide plate 11 to the pond bottom 8f. In the present embodiment, the guide plate 11 is fixed by a plurality of (four in the figure) anchor bolts 12, but the guide plate 11 may be fixed by one anchor bolt 12. It is preferable that the portion fixed by 12 is closer to the center of the guide plate 11 in the longitudinal direction.

  FIG. 2B is an enlarged view of a portion C surrounded by a circle in FIG. 2A, and FIG. 2C is a cross-sectional view taken along line DD in FIG. FIG. 3D is an enlarged view of a portion E surrounded by a circle in FIG.

  FIG. 2B is an enlarged view of a portion where the end portions of the guide plates 11 that are continuous at intervals in the longitudinal direction face each other. In the description with reference to FIG. 2B, for convenience, the guide plate 11 on one side (left side) may be referred to as one side guide plate 11A, and the guide plate 11 on the other side (right side) may be referred to as the other side guide plate. It may be referred to as a plate 11B.

  As shown in FIG. 2B, the other end of the one-side guide plate 11A and one end of the other-side guide plate 11B have inclined portions 111 formed obliquely with respect to the longitudinal direction. Is provided. These opposed inclined portions 111, 111 are inclined in the same direction (downward toward one side in the figure), and a gap extending obliquely to the longitudinal direction is provided between these inclined portions 111, 111. C is formed. In the present embodiment, the inclination angle α of each of the inclined portions 111, 111 with respect to the longitudinal direction is set to 45 degrees. If the angle of inclination α is less than 15 degrees, machining may be difficult, for example, the tip may be easily chipped. If the angle of inclination is more than 60 degrees, the effect of dispersing the load, which will be described in detail later, may be reduced. is there. For this reason, it is preferable that the inclination angle α is adjusted in a range of 15 degrees or more and 60 degrees or less. In the present embodiment, the inclination angle α of the inclined portion 111 of the one-side guide plate 11A and the inclination angle α of the inclined portion 111 of the other-side guide plate 11B are set to be the same. May be different. However, if a mode in which the inclination angle α is the same is adopted, it is only necessary to cut the long plate material obliquely with respect to the longitudinal direction.

  The gap C is a space for absorbing the elongation of the guide plate 11 in the longitudinal direction. Even when the guide plate 11 is elongated by thermal expansion, the gap C may cause the guide plate 11 to be deformed in a wavy shape in the longitudinal direction. Can be prevented. As shown in FIG. 2A, one end of the guide plate 11 disposed on the most one side and the other end of the guide plate 11 disposed on the other side are in the longitudinal direction. Although it is formed in a shape extending in a direction perpendicular to the above, this is in consideration of adjustment allowance and the like, and an inclined portion may be provided at these ends.

  The restricting member 13 is made of, for example, a metal fitting having a thickness of about 2 mm. The restricting member 13 is disposed so as to straddle the adjacent one-side guide plate 11A and the other-side guide plate 11B. It is fixed to the pond bottom 8f. The restricting members 13 are disposed on both sides of the one-side guide plate 11A and the other-side guide plate 11B in the orthogonal direction. In FIG. 2C, a shoe 32, which will be described in detail later, is indicated by a two-dot chain line, and a region where the shoe 32 slides on the guide plate 11 is secured by arranging the regulating members 13 on both sides in the orthogonal direction. I have. As described above, according to the regulating member 13 of the present embodiment, it is possible to efficiently regulate the lifting of the end portion of the guide plate 11 with a small number of parts while securing the area where the shoe 32 slides.

  As shown in FIG. 2D, the regulating member 13 includes a main body 131 placed on the bottom 8f of the pond, a side regulating portion 132 extending obliquely upward from the main body 131, and a lateral regulating member 132. An upper regulating portion 133 extending horizontally from the upper end of the portion 132. The upper regulation part 133 is a part that covers the guide plate 11 from above, and is a part that regulates the lifting of the end of the guide plate 11. The side regulating portion 132 is located on the side of the guide plate 11 and regulates the movement of the guide plate 11 in a horizontal plane. In this embodiment, the upper regulating portion 133 uses the regulating member 13 in contact with the upper surface of the guide plate 11, and the side regulating portion 132 attaches the regulating member 13 to be slightly separated from the side surface of the guide plate 11. . In addition, the regulating member 13 having a configuration in which a gap is formed between the upper regulating portion 133 and the upper surface of the guide plate 11 may be used, or the regulating member may be configured such that the side regulating portion 132 contacts the side surface of the guide plate 11. 13 may be attached.

  Here, if the mode in which the movement of the guide plate 11 in the horizontal plane is also restricted by the anchor bolt 12 shown in FIG. 2A is adopted, it is necessary to restrict the movement of the guide plate 11 in the horizontal plane by the side restricting portions 132. , And the side regulating portion 132 can be omitted. On the other hand, by adopting a mode in which the guide plate 11 is allowed to move in a horizontal plane by fixing with one anchor bolt 12 and attaching the regulating member 13 in a state where the side regulating portion 132 is separated from the side surface of the guide plate 11. May be. According to this aspect, even if the end portions of the guide plate 11 come into contact with each other, the guide plate 11 moves in a horizontal plane and prevents wavy deformation. Can be.

  FIG. 3 is a side view showing how the guide plate 11 is replaced.

  When the guide plate 11 is replaced due to damage or the like, first, the anchor bolt 12 is removed as shown in FIG. In addition, when using the anchor bolt which releases the fixation of the guide plate 11 by cutting off the head, the head may be cut off.

  Subsequently, the central portion of the guide plate 11 in the longitudinal direction is lifted, and as shown in FIG. 4B, the guide plate 11 is curved so that the central portion becomes upwardly convex. Since the guide plate 11 of the present embodiment is made of ultrahigh molecular weight polyethylene having a thickness of about 5 mm, it can be easily curved.

  Next, the one end 111 and the other end 111 of the curved guide plate 11 are sequentially extracted from the regulating member 13. Thus, the guide plate 11 can be removed as shown in FIG.

  When a new guide plate 11 is mounted, one end portion 111 and the other end portion 111 of the guide plate are now bent in a state where the central portion in the longitudinal direction of the guide plate is curved so as to protrude upward. Are sequentially inserted into the regulating member 13. As a result, the guide plate 11 is placed on the pond bottom 8f, and after adjusting the position in the longitudinal direction, the anchor bolt 12 is driven in to fix the guide plate 11 to the pond bottom 8f. When an anchor bolt of a type that cuts off the head is used, the anchor bolt 12 may be driven into a portion different from a portion remaining in the pond bottom 8f with the head cut off.

  In the present embodiment, since the guide plate 11 is fixed to the pond bottom portion 8f by pressing both ends of the guide plate 11 with the regulating member 13 and driving the anchor bolts 12, the replacement operation of the guide plate 11 is performed. It can be done easily. When a guide plate 11 having high rigidity is used, the regulation member 13 may be removed and the guide plate 11 may be replaced.

  As shown in FIG. 1, the scraping members 3 are arranged at equal or substantially equal intervals in the longitudinal direction. Each of the scraping members 3 includes a scraper 31 (see FIG. 4) extending in the orthogonal direction. The stroke of the reciprocating movement of the scraping member 3 is set to a distance equal to or greater than the longitudinal interval at which the scraping member 3 is arranged. The sludge that has settled in the sedimentation basin 8 is swept stepwise by one stroke toward the sludge pit 81 side by the reciprocating movement of the scraping member 3 and sent into the sludge pit 81.

  The drive rod 5 is arranged at the center in the orthogonal direction, and extends in the longitudinal direction. Further, one connecting member 4 is arranged at each of both ends in the orthogonal direction. The drive rod 5 and the connecting member 4 are made of stainless steel having a hollow rectangular column shape. Further, each of the connecting members 4 extends over the entire length in the longitudinal direction in which the plurality of scraping members 3 are arranged, and each of the plurality of scraping members 3 is fixed by the fixing mechanism 7. Thereby, each of the connecting members 4 connects all of the plurality of scraping members 3. Further, the driving rod 5 and the connecting member 4 are connected by a plurality of connecting bars 41 and 42. Thus, the driving force transmitted from the driving mechanism (not shown) to the driving rod 5 is also efficiently transmitted to the connecting member 4, and the driving rod 5 reciprocates, so that the two connecting members 4 also reciprocate. .

  FIG. 4A is an enlarged view of a portion A surrounded by a circle in FIG. 1, and FIG. 4B is a sectional view taken along line BB of FIG.

  As shown in FIGS. 4A and 4B, the scraping member 3 has a scraper 31 and a shoe 32 placed between the scraper 31 and the guide rail 10. The scraper 31 is formed of a bent stainless steel plate, faces one side, and draws the sludge settled on the bottom 8f of the pond to one side (the side of the sludge pit 81 shown in FIG. 1). And an inclined surface 312 inclined downward from the upper end portion of the scraping surface 311 toward the other side.

  The shoe 32 includes a fixed wall 321 rising on one side, a sliding contact portion 322 extending from the lower end portion of the fixed wall 321 to the other side, and mounted on the guide plate 11. And a receiving portion 323 projecting obliquely upward on one side from the other end. The shoe 32 of the present embodiment is a so-called stainless steel casting. As shown in FIG. 4B, the sliding contact portion 322 is a portion where the scraper 31 is placed. The sliding portion 322 also has a function of reducing the abrasion of the guide plate 11 when the scraping member 3 reciprocates, the lower surface of the sliding portion 322 slidingly contacting the guide plate 11. The sliding contact portion 322 is formed with a second receiving portion 322a protruding upward, and the scraper 31 mounted on the sliding contact portion 322 is locked to the second receiving portion 322a and the receiving portion 323. I do.

  When the scraping member 3 moves to one side, the scraping surface 311 of the scraper 31 placed on the shoe 32 scrapes sludge to one side. On the other hand, the inclined surface 312 is inclined toward the pond bottom 8f so that the scraper 31 tapers toward the other side. When the scraping member 3 moves to the other side, the sludge gets over the inclined surface 312, so that most of the sludge can stay at the position scraped by the scraping surface 311.

  The fixing mechanism 7 for fixing the scraping member 3 to the driving rod 5 has a pair of angles 71, 71 and a pressing member 72. Note that the fixing mechanism 7 for fixing the scraping member 3 to the connecting member 4 has the same configuration as the fixing mechanism 7 for fixing the scraping member 3 to the drive rod 5, and thus the description is omitted.

  Each of the pair of angles 71 is an L-shaped bracket made of stainless steel, and is welded to each of both sides in the orthogonal direction of the drive rod 5 so as to extend vertically. The pressing member 72 has a bolt 721, three nuts 722, and a cap 723, and is provided on each side of the drive rod 5 in the orthogonal direction. The bolt 721 is inserted through the angle 71 and the fixed wall 321 of the shoe 32 with the nut 722 attached, and is fixed by the nut 722. A cap 723 is attached to the other end of the bolt 721, and the cap 723 contacts the scraping surface 311 and presses the scraping surface 311 from one side to the other side. Thus, the scraping member 3 is fixed to the drive rod 5 by the fixing mechanism 7.

  FIG. 5 is a view conceptually showing a state in which the scraping member 3 (see FIG. 4) reciprocates and the shoe 32 slides on the guide plate 11 of the guide rail 10. In the description using FIG. 5 as well, for convenience, the guide plate 11 on one side (left side) may be referred to as one side guide plate 11A, and the guide plate 11 on the other side (right side) may be referred to as the other side guide plate 11B. It may be called. In FIG. 5, a state in which the scraping member 3 moves to one side and the one end 32 a of the shoe 32 approaches the gap C is indicated by a two-dot chain line, and the one end 32 a of the shoe 32 is The state passing through C is indicated by a solid line, and the state of the other end 32b of the shoe 32 also passing through the gap C is indicated by a dashed line. When the scraping member 3 moves to the other side, the shoe 32 indicated by a dashed line is in a state where the other end 32b is approaching the gap C, and the shoe 32 is indicated by a solid line. End 32b has passed through the gap C, and the shoe 32 shown by the two-dot chain line also has one end 32a passing through the gap C.

  As shown in FIG. 5, one end 32 a of the shoe 32 is also moved from the state shown by the two-dot chain line to the state shown by the one-dot chain line until the shoe 32 moves to the state shown by the one-dot chain line. The portion 32b also obliquely intersects the inclined portions 111 of both the one-side guide plate 11A and the other-side guide plate 11B, and the intersections move in the longitudinal direction. Thereby, the load applied to the inclined portion 111 is easily dispersed in the longitudinal direction, and a contact load due to the contact with the one end 32a of the shoe 32 hardly occurs. As a result, it is possible to suppress wear of the end of the guide plate 11.

  Further, in the present embodiment, an aspect is adopted in which the inclined portions 111 of both the one-side guide plate 11A and the other-side guide plate 11B are inclined in the same direction, and the inclined portions 111 overlap in the orthogonal direction. Thereby, while the shoe 32 passes through the gap C, the shoe 32 is easily positioned on both the one-side guide plate 11A and the other-side guide plate 11B. As a result, the concentration of the load applied to the inclined portion 111 can be more efficiently avoided.

  Also, when the shoe 32 reciprocates and moves to the other side, similarly, the load applied to the inclined portion 111 is easily dispersed in the longitudinal direction, and a contact load due to contact with the other end 32b of the shoe 32 also occurs. It becomes difficult.

  As described above, according to the guide rail 10 of the present embodiment, it is possible to prevent the end portion of the guide plate 11 from being worn while preventing the wavy deformation due to the elongation of the guide plate 11.

  Next, a modified example of the guide rail 10 shown in FIGS. 1 to 5 will be described. In the modified example described below, differences from the embodiment shown in FIGS. 1 to 5 will be mainly described, and components having the same names as the components in the embodiment shown in FIGS. The description will be given with the reference numerals used so far, and duplicate description may be omitted.

  FIG. 6 is a view showing a state corresponding to FIG. 2B regarding a modification of the guide rail 10 shown in FIGS. 1 to 5.

  FIG. 6A shows a first modification. In the guide rail 10 of the first modification, two inclined portions having different inclination directions are provided at respective ends of the guide plate 11. Specifically, each end of the guide plate 11 has inclined portions 111a and 111b formed obliquely on the other side from both sides in the orthogonal direction toward the center in the orthogonal direction. Thus, the other end of the one-side guide plate 11A is formed in a triangular shape, and the one-side end of the other side guide plate 11B is formed in a triangular shape. . As in the first modified example, a mode in which a plurality of inclined portions 111 are formed at each end of the guide plate 11 can be adopted.

  FIG. 6B shows a second modification. In the guide rail 10 of the second modification, a plurality of inclined portions 111 are formed at each end of the guide plate 11, and each end of the guide plate 11 is formed. The parts are formed zigzag in the orthogonal direction. As a result, a zigzag gap C is formed between the one-side guide plate 11A and the other-side guide plate 11B.

  FIG. 6C shows a third modification, and FIG. 6C conceptually shows the shoe 32. In the above-described embodiment and the present modification, the length of the guide plate 11 in the orthogonal direction is set to be considerably longer than the length of the shoe 32 in the orthogonal direction. In the guide plate 11 of the present modification, an inclined portion 111 is formed at a portion where the shoe 32 slides, and an orthogonal portion 112 extending in an orthogonal direction is formed at a portion regulated by the regulating member 13. According to this modification, the regulation of the guide plate 11 by the regulation member 13 can be further stabilized. Note that one end 32a and the other end 32b of the shoe 32 may be formed in an arc shape as shown by a one-dot chain line, or may be inclined with respect to the longitudinal direction as shown by a two-dot chain line. However, it may be formed in a direction crossing the inclined portion 111.

The present invention is not limited to the above-described embodiment, and various changes can be made within the scope described in the claims. For example, in the present embodiment, an example in which the guide rail of the present invention is applied to a reciprocating sludge scraping device has been described, but the guide rail of the present invention is applied to a chain flight type sludge scraping device. In this case, the flight plate will slide on the guide rail. In addition, even if it is a component included only in the description of each modified example described above, the component may be applied to the embodiment and other modified examples.
In addition, the guide rails described so far are a plurality of guide plates that squeeze the sludge settled in the sedimentation basin and are slid in contact with each other at intervals in the longitudinal direction,
Each of the plurality of guide plates may be characterized in that an inclined portion formed obliquely to the longitudinal direction is provided at an end in the longitudinal direction.

DESCRIPTION OF SYMBOLS 10 Guide rail 11 Guide plate 111 Inclined part 12 Anchor bolt 13 Restriction member 20 Sludge scraper 3 Scraper member 31 Scraper 32 Shoe 8 Sedimentation basin C Clearance

Claims (5)

A plurality of guide plates that scrape the sludge that has settled in the sedimentation basin and the sliding members are in sliding contact with each other are spaced apart in the longitudinal direction,
Wherein each of the plurality of guide plates state, and are not inclined portion formed obliquely with respect to the longitudinal direction is provided at the end of the longitudinal,
Said guide plate, said longitudinal and in both sides respectively of the outer direction orthogonal in the horizontal plane, the guide, characterized in Rukoto comprises a removable regulating member for regulating the movement in the said direction perpendicular to said guide plate rail.   2. The guide rail according to claim 1, wherein the plurality of guide plates have the inclined portions of the adjacent guide plates inclined in the same direction. Before SL regulating member is disposed across the guide plate adjacent to claim 1 or 2, wherein the guide rails, characterized in that having an upper regulating portion for covering the guide plate from above.   The guide rail according to claim 3, wherein the restricting member has a side restricting portion located on a side of the guide plate.   The guide rail according to any one of claims 1 to 4, further comprising a fixing member that fixes the guide plate to the sedimentation basin at a central portion in a longitudinal direction thereof.