JP6493261B2 - Article conveying device - Google Patents

Description

  The present invention relates to an article conveying apparatus including a mast provided along an up-down direction and a lifting body that is guided by the mast and moves up and down.

  An example of the article conveying apparatus as described above is disclosed in Japanese Patent Laid-Open No. 11-116088 (Patent Document 1). In the article conveying apparatus of Patent Document 1, the mast is formed in a rectangular shape when viewed in the vertical direction, and a plurality of guide rollers guided to a pair of side surfaces facing in opposite directions of the mast are roller support portions in the lifting body. It is supported by. Then, each of the plurality of guide rollers is guided to each of the pair of side surfaces of the mast, so that the elevating body is stably raised and lowered along the mast.

  In Patent Document 1, the roller support portion in the elevating body includes an attachment surface forming portion along the direction in which the plurality of guide rollers are arranged (left and right direction) when viewed in the vertical direction, and the guide roller is supported by the attachment surface forming portion. It is attached via a shaft. Patent Document 1 does not specify a method for attaching the support shaft to the attachment surface forming portion. For example, a bolt hole or the like is formed in the attachment surface forming portion, and the support shaft is bolted to the attachment surface forming portion. It is conceivable to attach directly. Furthermore, although omitted from Patent Document 1, in a so-called stacker crane such as Patent Document 1, a transfer device for moving an article along the left-right direction is provided in the lifting body.

Japanese Patent Application Laid-Open No. 11-116008

  In the article conveying apparatus of Patent Document 1, when the article is moved along the left-right direction by operating the transfer apparatus, the moment generated due to the movement of the center of gravity in the attachment part of the support shaft in the attachment surface forming part. There is a risk that the resulting force acts in a direction perpendicular to the support shaft and the mounting surface forming portion is deformed. When deformation occurs in the mounting surface forming portion, the positional relationship between the guide roller attached to the mounting surface forming portion and the pair of side surfaces of the mast changes, and the guide roller cannot properly guide the lifting body along the mast. There is a risk of becoming.

  In order to suppress such deformation of the mounting surface forming portion, the mounting surface forming portion is formed thick, or the mounting surface forming portion is provided with a plurality of bent portions to enhance the strength of the mounting surface forming portion. It is possible to do. However, if the above-described processing is performed on the attachment surface forming portion, the member cost of the roller support portion in the elevating body may be increased.

  Therefore, there is a demand for an article conveying apparatus that can suppress deformation of the attachment surface forming portion while suppressing the member cost of the roller support portion.

An article conveying apparatus according to the present invention for solving the above problems is an article conveying apparatus comprising a mast provided along an up-down direction, and an elevating body that is guided by the mast to move up and down.
The mast includes a pair of guide surfaces extending in the vertical direction and facing opposite directions, and the lifting body is connected to the article support unit for supporting the article to be transported, the article support unit, and the mast A plurality of guide rollers that are in contact with each of the pair of guide surfaces, and a roller support portion, an attachment surface forming portion that forms an attachment surface to which the guide roller is attached, and a positioning portion And the mounting surface forming portion includes a plate-like portion along the vertical direction and a through-hole forming portion that forms a through-hole penetrating in the thickness direction of the plate-like portion, and the guide roller A boss portion through which the support shaft is inserted is formed in a protruding state, and a plate-like body is provided around the boss portion, and the boss portion is inserted into the through hole. Being at least of the plate part The plate-shaped body is attached to the mounting surface forming portion in a state where the portion is in close contact with the mounting surface forming portion along the surface direction, and the arrangement direction of the plurality of guide rollers as viewed in the vertical direction is the left-right direction. , by the positioning portion in contact with the edge of the plate-like body in the lateral direction, in a state in which the axis of the boss portion is positioned such that the set positional relationship with respect to the pair of the guide surfaces, the attachment It is characterized by being attached to the surface forming portion.

  That is, the plate-like body is attached to the attachment surface forming portion with the positioning portion positioned so that the axial center of the boss portion has a set positional relationship with respect to the pair of guide surfaces. It is supported by the plate-like body in a state of being inserted through a boss portion formed on the plate-like body. Therefore, even if a force in a direction perpendicular to the support shaft of the guide roller is applied to the support shaft, the boss portion protruding in the axial direction of the support shaft receives the force, so that the support shaft is appropriately supported. Further, since the plate-like body is attached in close contact with the attachment surface forming portion along the surface direction, the force in the direction perpendicular to the support shaft of the guide roller is applied not only to the existing portion of the support shaft but also to the plate-like body. It can be received by the entire portion in close contact with the surface forming portion. For this reason, it is easy to suppress the deformation of the mounting surface forming portion as compared with the case where the support shaft is directly supported by the mounting surface forming portion. Accordingly, the guide roller is appropriately supported without increasing the thickness of the plate-like portion in order to improve the strength of the mounting surface forming portion, or without adding processing such as providing a plurality of bent portions on the plate-like portion. be able to.

  Thus, according to this characteristic configuration, it is possible to provide an article transport apparatus that can suppress deformation of the attachment surface forming portion while suppressing the member cost of the roller support portion.

  In the article conveying apparatus according to the present invention, the attachment surface forming portion is formed along the left-right direction, and the roller support portion is viewed from the left and right ends of the attachment surface forming portion when viewed in the up-down direction. A pair of side surface forming portions extending in a first direction of the thickness direction, the plate-like body is disposed along a surface of the attachment surface forming portion facing the first direction, and the positioning portion is A side surface forming part is preferred.

  That is, when the roller support portion is formed in a form (for example, a box shape) including a pair of side surface forming portions extending in the first direction in the thickness direction from both ends of the mounting surface forming portion when viewed in the vertical direction, The side surface forming part can be used as a positioning part. For this reason, it is easy to reduce member cost compared with the case where a positioning part is formed separately.

  In the article transporting apparatus according to the present invention, an arc portion that is arcuate when viewed in the vertical direction is formed at a connection portion between the attachment surface forming portion and the side surface forming portion, and the plate-like body is the side surface. An inclined surface in which an edge abutting on the forming portion is inclined from the first surface, which is a surface in close contact with the mounting surface forming portion, toward the second surface, which is a surface along the thickness direction, when viewed in the vertical direction. It is preferable that a gap is formed between the arc portion and the inclined surface when viewed in the vertical direction.

That is, when the mounting surface forming portion and the side surface forming portion are manufactured by bending a single plate member, an arc that is arcuate when viewed in the vertical direction at the connection portion between the mounting surface forming portion and the side surface forming portion. Part may be formed. In such a case, the shape of the plate-like body attached to the attachment surface forming portion is not formed with an inclined surface between the first surface and the second surface, and the first surface and the second surface are viewed in the vertical direction. When the shape is orthogonal, the edge of the plate-like body interferes with the inner surface of the arc portion. For this reason, when the 1st surface of a plate-shaped object was stuck to the attachment surface formation part, the 2nd surface of a plate-shaped object cannot be contacted with a side surface formation part, but the 2nd surface of a plate-shaped object is made to contact. If the side surface forming portion is brought into contact with the side surface forming portion, a situation occurs in which the first surface of the plate-like body cannot be properly adhered to the mounting surface forming portion.
According to this characteristic configuration, the plate-like body is formed in a shape in which a gap is formed between the arc portion and the inclined surface when viewed in the vertical direction, so the connection portion between the mounting surface forming portion and the side surface forming portion. Even if the circular arc portion is formed, the second surface of the plate-shaped body can be brought into contact with the side surface forming portion while the first surface of the plate-shaped body is in close contact with the attachment surface forming portion.

  In the article conveying apparatus according to the present invention, as the plurality of guide rollers, a first guide roller that contacts the first guide surface of the pair of guide surfaces, and a second guide surface of the pair of guide surfaces. A second guide roller in contact with the first guide roller, and when the first guide roller is attached to the attachment surface forming portion, the shaft center of the support shaft of the first guide roller and the first guide roller side The distance between the side surface forming portion, the axis of the support shaft of the second guide roller and the side surface forming portion on the second guide roller side when the second guide roller is mounted on the mounting surface forming portion. Are equal to each other, and the plate-like body is symmetric with respect to an imaginary line passing through the central portion in the thickness direction of the plate-like body when viewed along the left-right direction and the vertical direction. Formed into shape It is preferable to have.

  That is, the distance between the edge when viewed from one surface of the plate-like body and the axis of the boss portion, and the edge when viewed from the other surface of the plate-like body and the axis of the boss portion And the distance between the axis of the support shaft of the first guide roller and the side surface forming portion on the first guide roller side when the first guide roller is mounted on the mounting surface forming portion. And the distance between the shaft center of the support shaft of the second guide roller and the side surface forming portion on the second guide roller side when the second guide roller is mounted on the mounting surface forming portion are set equal. Therefore, if the plate-like body is formed in a shape that is symmetric with respect to an imaginary line passing through the central portion in the thickness direction as described above, the plate-like body for the first guide roller is 180 degrees around the axis along the vertical direction. By rotating, it can also be used as a plate-like body for the second guide roller. Therefore, since both the plate for the first guide roller and the plate for the second guide roller can have the same shape, the types of members are compared to the case where both are produced separately. The number can be reduced.

  In the article transporting apparatus according to the present invention, the plate portion is recessed toward a close contact portion that is in close contact with the mounting surface forming portion and in a direction opposite to the direction in which the mounting surface forming portion exists in the thickness direction. It is preferable to provide a thinned portion.

  That is, by bringing the close contact portion of the plate portions in the plate-like body into close contact with the attachment surface forming portion, the plate-like body can be appropriately held with respect to the attachment surface forming portion in the thickness direction. Moreover, the weight of the plate-like body can be reduced as much as possible by forming the thinned portion in a portion other than the close contact portion.

  In the article transporting apparatus according to the present invention, the article support section includes a transfer device that supports the article and moves in and out along the left-right direction, and the plate-like body is seen in the left-right direction. It is preferable that a portion overlapping with the support shaft of the guide roller is a non-thinned portion where the thinned portion is not formed.

  In other words, the center of gravity of the lifting / lowering body moves along the left-right direction by moving the article along the left-right direction by moving the transfer device back and forth. For this reason, a lateral force is applied to the support shaft of the guide roller due to a moment or the like. According to this characteristic configuration, the thinned portion non-forming portion is formed along the left-right direction. Therefore, when a left-right force is applied to the support shaft as the center of gravity moves as described above, the force is reduced. It can be received at the non-thinned portion. Therefore, it is possible to maintain the strength of the plate-like body with respect to the force accompanying the movement of the transfer device while reducing the weight of the plate-like body as much as possible.

Overall side view of stacker crane Perspective view showing the lifting body Sectional drawing which shows an upright part and the attached guide roller Front view of upright section Whole perspective view of plate Exploded perspective view showing the configuration of guide roller mounting to the upright section Vertical sectional view showing the positional relationship between the plate-like body, the roller support surface forming portion and the side surface forming portion Vertical sectional view showing the positional relationship between the arc portion and the inclined surface

Hereinafter, based on the drawings, an embodiment in which the article conveying device of the present invention is applied to a stacker crane will be described.
As shown in FIGS. 1 and 2, the stacker crane 1 includes a traveling frame 10 that supports traveling wheels W that roll on the traveling rail R, and a traveling direction (see FIGS. 1 to 3) on the upper portion of the traveling frame 10. The direction indicated by X. Hereinafter, the direction is separated from the traveling direction X, and along the vertical direction (the direction indicated by Z in FIGS. 1, 2, and 4; hereinafter, referred to as the vertical direction Z). A pair of standing masts 20 (first mast 20A, second mast 20B), an upper frame 30 that connects the upper ends of each of the pair of masts 20, a lifting body 40 that is guided by the mast 20 and moves up and down, It has. As shown in FIGS. 2 and 3, the mast 20 is formed in a rectangular shape when viewed in the vertical direction Z, and is a pair of guide surfaces 20M (first guide surfaces 20M1) along the vertical direction Z and facing in opposite directions. A second guide surface 20M2) is provided. As shown in FIG. 1, traveling wheels W1 driven by a traveling motor M1 and free-wheeling driven wheels W2 are provided as traveling wheels W apart from the front end portion and the rear end portion of the traveling frame 10. It has been.

  The lifting / lowering body 40 is provided with a transfer fork F for transferring the article B to be transported to / from a transfer target location (not shown). Examples of the transfer target location include an article storage shelf provided at a position orthogonal to the extending direction of the traveling rail R in a plan view, and a transfer location with another transfer device (for example, a conveyor).

  As shown in FIG. 2, the elevating body 40 includes a pair of upright portions 41 (first upright portion 41 </ b> A, second upright portion 41 </ b> B) that are spaced apart in the arrangement direction of the pair of masts 20, And a mounting frame forming member 42 </ b> W that connects the lower ends of the pair of upright portions 41.

  The first upright portion 41A and the second upright portion 41B are formed in the same shape. Therefore, in the following description, the first upright unit 41A will be described as an example, and the common part will be described simply as the upright unit 41. In the description of the upright section 41, as shown in FIGS. 3 and 4, the direction facing the one side of the traveling direction X is described as the X1 direction, and the direction facing the other side is described as the X2 direction. As shown in FIGS. 2 to 4, the upright portion 41 includes a roller support surface forming portion 44 to which the guide roller 41 </ b> R is attached and the both ends of the roller support surface forming portion 44 in the left-right direction Y as viewed in the vertical direction Z. A pair of side surface forming portions 45 extending in one direction X1, and a pair of inward folds extending from the opposite ends of the pair of side surface forming portions 45 to the roller support surface forming portion 44 in directions close to each other. And a curved portion 46.

  The roller support surface forming portion 44 includes, as guide rollers 41R, a first guide roller 41R1 that contacts the first guide surface 20M1 of the pair of guide surfaces 20M of the mast 20, and a pair of guide surfaces 20M of the mast 20. A second guide roller 41R2 that contacts the second guide surface 20M2 is attached. The roller support surface forming portion 44 and the inwardly bent portion 46 are along the left-right direction Y and the up-down direction Z, which are the alignment directions of the first guide roller 41R1 and the second guide roller 41R2 when viewed in the up-down direction Z. Is formed.

  In the present embodiment, the first guide roller 41R1 and the second guide roller 41R2 correspond to a plurality of guide rollers. That is, as the plurality of guide rollers 41R, the first guide roller 41R1 that contacts the first guide surface 20M1 of the pair of guide surfaces 20M, and the second of the pair of guide surfaces 20M that contacts the second guide surface 20M2. A guide roller 41R2.

  The roller support surface forming portion 44, the pair of side surface forming portions 45, and the pair of inwardly bent portions 46 are formed by bending a single rectangular plate formed of a metal such as stainless steel. As shown in FIG. 3, when viewed in the vertical direction Z, the roller support surface forming portion 44, the pair of side surface forming portions 45, and the pair of inwardly bent portions 46 are arranged along a rectangular outer edge. In addition, the pair of inwardly bent portions 46 are formed in a C shape having an opening between the side surface forming portion 45 and the opposite end portion.

  As shown in FIGS. 3, 7, and 8, an arc portion 44 r that has an arc shape when viewed in the vertical direction Z is formed at the connection portion between the roller support surface forming portion 44 and the side surface forming portion 45 that is continuous therewith. Has been.

  As shown in FIG. 2, the first upright part 41 </ b> A and the second upright part 41 </ b> B are arranged in the running direction X and arranged so that the C-shaped opening faces each other. Although not shown in the present embodiment and the drawings, the roller support surface forming portion 44, the pair of side surface forming portions 45, and the pair of inwardly bent portions 46 in the first upright portion 41A and the second upright portion 41B. A control board and a measuring device for operating the stacker crane 1 are installed in a region surrounded by.

  Further, as shown in FIGS. 2 and 4, the roller support surface forming portion 44, the pair of side surface forming portions 45, and the pair of inwardly bent portions 46 in the first upright portion 41A and the second upright portion 41B. A ceiling member 48 is fixed to the upper end of the plate by welding or the like. Furthermore, a floor member 47 is welded to the lower ends of the roller support surface forming portion 44, the pair of side surface forming portions 45, and the pair of inwardly bent portions 46 in the first upright portion 41A and the second upright portion 41B. Fixed by etc. A pair of long mounting frame forming members 42 </ b> W along the traveling direction X are attached to the lower surface of the floor member 47 so as to be separated in the left-right direction Y. Further, the pair of placement frame forming members 42 </ b> W are disposed at intervals corresponding to the width of the upright portion 41 in the left-right direction Y. Furthermore, the above-mentioned transfer fork F is provided at the upper ends of the pair of mounting frame forming members 42W. The transfer fork F can be moved in and out along the left-right direction Y while supporting the article B to be transported.

In the present embodiment, the pair of placement frame forming members 42W correspond to the article support portions, the upright portions 41 (first upright portions 41A and second upright portions 41B) correspond to the roller support portions, and the rollers The support surface forming portion 44 corresponds to the mounting surface forming portion, and the transfer fork F corresponds to the transfer device.
That is, the elevating body 40 includes a mounting frame forming member 42W that supports the article B to be transported, and a plurality of guide rollers that are connected to the mounting frame forming member 42W and contact each of the pair of guide surfaces 20M of the mast 20. An upright portion 41 to which 41R is attached, and the upright portion 41 includes a roller support surface forming portion 44 that forms an attachment surface to which the guide roller 41R is attached. A transfer fork F that supports B and moves in the left-right direction Y is provided.

  As shown in FIGS. 3, 4, and 6, the roller support surface forming portion 44 includes a plate-like portion 44 </ b> B along the up-and-down direction Z and a through-hole 44 </ b> K penetrating in the thickness direction of the plate-like portion 44 </ b> B. 6) to form a through hole forming portion 44H. In the present embodiment, since the roller support surface forming portion 44 is formed along the left-right direction Y and the up-down direction Z, the traveling direction X corresponds to the thickness direction of the plate-like portion 44B.

  In this embodiment, as shown in FIGS. 2, 4, and 6, the through hole 44 </ b> K extends in the left-right direction Y at the same height in the up-down direction Z in the plate-like portion 44 </ b> B of the roller support surface forming portion 44. A pair is formed apart from each other, and two pairs of the pair of through holes 44 </ b> K are provided at different height positions in the vertical direction Z in the roller support surface forming portion 44. Therefore, a pair of guide rollers 41R (first guide roller 41R1 and second guide roller 41R2) are attached at the same height in the vertical direction Z in the roller support surface forming portion 44, and the pair of guide rollers 41R Four guide rollers 41R are attached to the roller support surface forming portion 44 in a form in which two sets are attached at different positions in the vertical direction Z.

  Furthermore, as shown in FIGS. 2, 4, and 6, a rectangular second through-hole forming portion 44C is formed in the plate-like portion 44B at a portion that overlaps with the region where the mast 20 exists in the left-right direction Y. ing. As shown in FIGS. 2 and 6, the roller 47 </ b> R that contacts the surface of the mast 20 on the running direction X side passes through the second through-hole forming portion 44 </ b> C in the first direction X <b> 1 side and the second direction X <b> 2 side. And is provided in such a form that it is biased from the second direction X2 toward the first direction X1.

  In this embodiment, in order to attach the guide roller 41R to the roller support surface forming portion 44, a boss portion 71 into which the support shaft 41J of the guide roller 41R is inserted is formed in a protruding state, and a plate portion 72 is formed around the boss portion 71. A plate-like body 7 (see FIG. 5) is used. Specifically, the guide roller 41R is attached to the upright portion 41 by attaching the plate-like body 7 to the roller support surface forming portion 44 and inserting the support shaft 41J of the guide roller 41R into the boss portion 71B of the plate-like body 7. It is attached. The boss portion 71 is formed so as to have a trapezoidal shape in which the base end portion has a larger diameter than the tip end portion when viewed in the vertical direction Z.

  The plate portion 72 of the plate-like body 7 includes a close contact portion 76 that is in close contact with the roller support surface forming portion 44 and a thinning portion that is recessed in the thickness direction in a direction opposite to the direction in which the roller support surface forming portion 44 exists. G (first thinning part 74 and second thinning part 75). Further, the plate-like body 7 includes a thinned portion non-formed portion 77 where the thinned portion G is not formed at a portion overlapping with the support shaft of the guide roller when viewed in the left-right direction Y.

  3 and 7, the plate-like body 7 is disposed along the surface 44u facing the first direction X1 in the roller support surface forming portion 44, and the boss portion 71 is inserted into the through-hole 44K so that the plate portion 72 is attached to the roller support surface forming portion 44 so as to be in close contact with the surface on the first direction X1 side of the roller support surface forming portion 44 along the surface direction.

  As shown in FIGS. 7 and 8, the plate-like body 7 has the second surface 73 </ b> M of the edge 73 of the plate-like body 7 in contact with the inner surface 45 u of the side surface forming portion 45 in the left-right direction Y. In a state where the plate-like body 7 is positioned in the left-right direction Y, it is fixed to the roller support surface forming portion 44 by welding. As shown in FIG. 3, the boss portion 71 is formed so that the axis J of the boss portion 71 is located at a predetermined distance L1 from the end edge 73 of the plate-like body 7, and the end edge 73 is the side surface forming portion. By abutting on the surface 45u of 45, the shaft center J of the boss portion 71 is positioned so as to have a set positional relationship with respect to the pair of guide surfaces 20M of the mast 20. The set positional relationship in this case is a positional relationship in which the outer periphery of the pair of guide rollers 41R can contact the pair of guide surfaces 20M of the mast 20 with an appropriate contact pressure. The diameter of the through hole forming portion 44H is larger than the diameter of the base end portion of the boss portion 71. Therefore, depending on the fit of the boss portion 71 with the through hole forming portion 44H, the roller support surface forming portion is formed. The positioning of the plate-like body 7 with respect to 44 is not performed.

  In the present embodiment, the inner surface 45u of each of the pair of side surface forming portions 45 acts as a positioning portion. That is, the plate-like body 7 has the axis 45 J of the boss portion 71 with respect to the pair of guide surfaces 20M by the surfaces 45u of the side surface forming portions 45 that abut on the edge 73 of the plate-like body 7 in the left-right direction Y. It is attached to the roller support surface forming portion 44 in a state of being positioned so as to be in the set position relationship.

  Further, as shown in FIG. 7, the plate-like body 7 is a surface in which an edge 73 that contacts the side surface forming portion 45 is a surface that is in close contact with the surface 44 u of the roller support surface forming portion 44 when viewed in the vertical direction Z. An inclined surface 73A that is inclined from 72A toward the second surface 73M that is a surface along the thickness direction is provided. When the plate-like body 7 is attached to the roller support surface forming portion 44, a gap S is formed between the arc portion 44r and the inclined surface 73A when viewed in the vertical direction Z. With such a configuration, as shown in FIG. 8, the plate-like body 7 has the second surface 73 </ b> M at the edge 73 while bringing one surface 72 </ b> A of the plate portion 72 into close contact with the surface 44 u of the roller support surface forming portion 44. It can be brought into contact with the surface 45 u of the side surface forming portion 45. In the present embodiment, the surface 72 </ b> A corresponds to the first surface of the plate-like body 7.

  As shown in FIG. 3, when the first guide roller 41R1 is attached to the roller support surface forming portion 44, the shaft center J of the support shaft 41J of the first guide roller 41R1 and the side surface forming portion 45 on the first guide roller side. And the axis J of the support shaft 41J of the second guide roller 41R2 and the side surface forming portion 45 on the second guide roller 41R2 side when the second guide roller 41R2 is attached to the roller support surface forming portion 44. The distance between is set equal. Then, as shown in FIG. 7, the plate-like body 7 is symmetric with respect to a virtual line CL passing through the central portion in the thickness direction of the plate-like body 7 when viewed in the left-right direction Y and in the vertical direction Z. Is formed. Therefore, the boss portion 71A, the inclined surface 73A, the first thinned portion 74A, and the second thinned portion 75A formed on one surface of the plate-like body 7 are formed on the other surface of the plate-like body 7. The boss portion 71B, the inclined surface 73B, the first thinned portion 74B, and the second thinned portion 75B are the left and right directions when the plate-like body 7 is rotated 180 degrees around the axis along the vertical direction Z. The positional relationship is reversed.

  By forming the plate-like body 7 in a shape that is symmetric with respect to the imaginary line CL, as shown in FIG. The plate-like body 7 is attached to the roller support surface forming portion 44 so that the surface 72A of the plate portion 72 is in close contact with the roller support surface forming portion 44, and the first guide roller 41R1 is attached. The boss 71B is inserted into the right through-hole 44K, and the plate 72 is brought into close contact with the roller support surface forming portion 44 so that the plate body 7 is brought into contact with the roller support surface forming portion 44. The second guide roller 41R2 can be supported by mounting. For this reason, it becomes possible to reduce the number of types of members. In the case where the plate-like body 7 is attached to the roller support surface forming portion 44 so that the surface 72B of the plate portion 72 is in close contact with the roller support surface forming portion 44, the gap S between the arc portion 44r and the inclined surface 73B. Is formed.

The lifting body 40 is driven up and down by the movement of the chain C (first chain CA, second chain CB).
The first end C1 of the first chain CA is connected to the upper end of the ceiling member 48 of the first upright portion 41A, and the first end of the first chain CA is connected to the lower end of the floor member 47 of the first upright portion 41A. Two ends C2 are connected. The first end C1 of the second chain CB is connected to the upper end of the ceiling member 48 of the second upright part 41B, and the second chain CB is connected to the lower end of the floor member 47 of the second upright part 41B. The 2nd end C2 of this is connected.

  Each of the first chain CA and the second chain CB is wound around a drive sprocket 90, and the drive sprocket 90 is rotationally driven by a lifting motor 90M. By rotating the drive sprocket 90 by the lifting motor 90M, the chain C (first chain CA, second chain CB) wound around the drive sprocket 90 can be moved along the extending direction of the chain C. it can. The operations of the lifting motor 90M, the traveling motor M1, and the transfer fork F are controlled by a control unit H (see FIG. 1) that controls the stacker crane 1.

  Between the first end C <b> 1 and the second end C <b> 2 of the chain C, it is wound around a plurality of sprockets P and drive sprockets 90. A portion of the first chain CA wound around the drive sprocket 90 and extending toward the first end C1 is guided upward by a lower first sprocket P1 that is rotatably supported by the traveling frame 10, and further, Guided downward by the upper first sprocket P2 rotatably supported by the frame 30, and connected to the upper end of the first upright portion 41A. Further, a portion of the first chain CA wound around the drive sprocket 90 that extends toward the second end C2 is oriented along the traveling direction X by the lower second sprocket P3 that is rotatably supported by the traveling frame 10. And is guided upward by the lower third sprocket P4 that is rotatably supported by the traveling frame 10, and is connected to the end on the first upright portion 41A side at the lower end of the mounting frame forming member 42W. ing.

  Of the second chain CB wound around the drive sprocket 90, a portion extending toward the first end C1 is guided upward by the lower first sprocket P1 rotatably supported by the traveling frame 10, and the upper frame 30. It is guided in the direction along the traveling direction X by the upper first sprocket P2 that is rotatably supported by the upper frame 30 and is further guided downward by the upper second sprocket P7 that is rotatably supported by the upper frame 30. It is connected to the upper end of the light part 41B. In addition, a portion of the second chain CB wound around the drive sprocket 90 and extending to the second end C2 side extends in the direction along the traveling direction X by the lower second sprocket P3 rotatably supported by the traveling frame 10. Guided and guided obliquely upward by the lower third sprocket P4 rotatably supported by the traveling frame 10, guided obliquely downward by the lower fourth sprocket P5 rotatably supported by the traveling frame 10, and further It is guided upward by the fifth sprocket P6 and is connected to the end of the mounting frame forming member 42W on the second upright portion 41B side.

[Another embodiment]
(1) In the above-described embodiment, the article conveying apparatus is applied to the stacker crane 1 that travels along the travel route, and the mast 20 is erected on the travel frame 10. However, the present invention is limited to such a configuration. It is not something. For example, the article conveying device of the present invention may be applied to a vertical conveying device in which the mast 20 is fixed to the floor. In the above-described embodiment, an example in which the mast 20 is formed in a rectangular shape when viewed in the vertical direction is shown. However, if the mast is provided with a pair of guide surfaces along the vertical direction Z and facing opposite directions, It is not limited to a rectangular mast when viewed in the direction Z.

(2) In the above embodiment, the first guide roller 41R1 and the second guide roller 41R2 as a plurality of guide rollers are provided at the same height in the vertical direction Z. However, the first guide roller 41R1 and the second guide roller 41R2 The guide roller 41R2 may have a different height. In the above-described embodiment, a configuration has been described in which a plurality of guide rollers (first guide roller 41R1 and second guide roller 41R2) are provided on one roller support surface forming portion 44, separated in the vertical direction. This may be only one set or three or more sets. Furthermore, the number of guide rollers 41R that contact one of the pair of guide surfaces 20M of the mast 20 may be different from the number of guide rollers 41R that contact the other. In this case, you may comprise so that the position of the up-down direction Z may differ between the guide roller 41R which contacts one of the pair of guide surfaces 20M of the mast 20, and the guide roller 41R which contacts the other.

(3) In the above embodiment, the boss portion 71 is formed in a shape in which the proximal end portion of the plate-like body 7 has a large diameter and becomes smaller as it approaches the distal end. The part and the tip part may be formed in a cylindrical shape having the same diameter.

(4) In the above embodiment, the configuration in which the side surface forming portion 45 is used as the positioning portion is shown. However, another member (for example, a contact block or a rib) used for positioning is used as the roller support surface forming portion 44. It is good also as a structure attached to the roller support surface formation part 44.

(5) In the above embodiment, the roller support surface forming portion 44, the pair of side surface forming portions 45, and the pair of inwardly bent portions 46 are made of a single rectangular plate formed of a metal such as stainless steel. However, the present invention is not limited to such a configuration. For example, the roller support surface forming portion 44 and the pair of pairs of stainless steel and the like are processed by casting or forging. The side surface forming portion 45 and the pair of inwardly bent portions 46 may be formed.
In the above embodiment, the roller support surface forming portion 44, the pair of side surface forming portions 45, and the pair of inwardly bent portions 46 are formed using a metal material. It may be formed of any material (for example, reinforced plastic or ceramic).
Moreover, although the said embodiment showed the structure which forms a pair of inward bending part 46 continuously from a pair of side surface formation part 45, the inward bending part 46 does not need to be provided.

(6) In the above embodiment, the configuration in which the arc portion 44r is formed at the connecting portion between the roller support surface forming portion 44 and the side surface forming portion 45 is shown. A configuration in which an arc portion is not formed between them (that is, a configuration in which the roller support surface forming portion 44 and the side surface forming portion 45 are orthogonal to each other when viewed in the vertical direction Z) may be employed. In this case, the edge of the plate-like body 7 may not include the inclined surface 73A (or the inclined surface 73B).

(7) In the above embodiment, the plate-like body 7 is symmetric with respect to the imaginary line CL passing through the central portion in the thickness direction (traveling direction X) of the plate-like body 7 when viewed in the left-right direction and the vertical direction Z. Although the example which forms in a shape was shown, you may form the plate-shaped body 7 asymmetrically with respect to the virtual line CL. For example, the boss portion 71 is not formed on one surface of the plate-like body, or the boss portion 71 on the surface opposite to the roller support surface forming portion 44 in the plate-like body 7 is disposed on the roller support surface forming portion 44 side. It is good also as a shape made longer than the boss | hub part of a surface. Moreover, in the said embodiment, when the plate-shaped body 7 is rotated 180 degree | times around the axial center along the up-down direction Z, the plate-shaped body 7 is formed so that one surface and the other surface may become symmetrical. However, when the plate-like body 7 is rotated by 180 degrees around the axis along the left-right direction Y, the plate-like body 7 may be formed such that one surface and the other surface are vertically symmetrical. . Further, when the plate-like body 7 is rotated 180 degrees around the axial center along the vertical direction Z, one surface and the other surface are symmetric, and the plate-like body 7 is moved in the left-right direction Y. One surface and the other surface may be vertically symmetric when rotated by 180 degrees around the axis along the axis.

(8) In the above embodiment, the plate portion 72 is recessed with the close contact portion 76 that is in close contact with the roller support surface forming portion 44 and in the direction opposite to the direction in which the roller support surface forming portion 44 exists in the thickness direction. The example comprised including the thinning part G was shown. In this case, the thinned portion G has been described as a portion where the plate-like body 7 is formed thin, but the thinned portion G may be a through-hole penetrating in the thickness direction of the plate-like body 7. Moreover, in the said embodiment, although the example which forms two of the 1st thinning part 74 and the 2nd thinning part 75 was shown as the thinning part G, the number of the thinning parts G is one or 3 There may be more than one, and the shape of the thinned portion G may be other than the shape shown in FIG. As the shape of the thinned portion G, for example, when the plate-like body 7 is viewed in the thickness direction, a plurality of circular or polygonal concave portions are arranged, or a plurality of linear concave grooves are arranged side by side in parallel. Conceivable.

1 Stacker crane (article conveying device)
20 Mast 20M Guide surface 20M1 First guide surface 20M2 Second guide surface 40 Lifting bodies 41A, 41B (41) Upright part (roller support part)
41J Support shaft 41R Guide roller 41R1 First guide roller 41R2 Second guide roller 42 Placement frame (article placement portion)
44 Roller support surface forming part (mounting surface forming part)
44B Plate-like portion 44H Through-hole forming portion 44K Through-hole 44r Arc portion 45 Side-surface forming portion 7 Plate-like bodies 71A and 71B (71) Boss portion 72 Plate portions 72A and 72B Surface (first surface)
73 Edge 73A, 73B Inclined surface 73M 2nd surface 74A, 74B (74) 1st thinning part 75A, 75B (75) 2nd thinning part G Thinning part 77 Thinning part non-formation part B Article CL Virtual line F Transfer fork (transfer equipment)
J Axis S S Gap X Traveling direction X1 First direction Y Left-right direction Z Up-down direction

Claims (6)

An article conveying device comprising: a mast provided along a vertical direction; and an elevating body that is guided by the mast and moves up and down,
The mast includes a pair of guide surfaces along the vertical direction and facing opposite directions.
The lifting body includes an article support section that supports an article to be transported, a roller support section that is connected to the article support section and to which a plurality of guide rollers that are in contact with each of the pair of guide surfaces of the mast are attached. With
The roller support portion includes an attachment surface forming portion that forms an attachment surface to which the guide roller is attached, and a positioning portion ,
The mounting surface forming portion includes a plate-like portion along the vertical direction, and a through-hole forming portion that forms a through-hole penetrating in the thickness direction of the plate-like portion,
A boss part through which the support shaft of the guide roller is inserted is formed in a protruding state, and a plate-like body is provided around the boss part, and a plate part extends.
The plate-like body is attached to the attachment surface forming portion in a state where the boss portion is inserted into the through hole and at least a part of the plate portion is in close contact with the attachment surface forming portion along the surface direction,
The arrangement direction of the plurality of guide rollers when viewed in the vertical direction is defined as the horizontal direction,
The plate-like body, by the positioning portion in contact with the edge of the plate-like body in the lateral direction, the axis of the boss portion is positioned such that the set positional relationship with respect to a pair of said guide surfaces The article conveying apparatus attached to the attachment surface forming portion in a state. The mounting surface forming portion is formed along the left-right direction,
The roller support portion includes a pair of side surface forming portions extending in the first direction of the thickness direction from both left and right ends of the mounting surface forming portion when viewed in the vertical direction,
The plate-like body is disposed along a surface facing the first direction in the attachment surface forming portion,
The article conveying apparatus according to claim 1, wherein the positioning unit is the side surface forming unit. In the connection portion between the mounting surface forming portion and the side surface forming portion, an arc portion that is arc-shaped when viewed in the up-down direction is formed,
In the plate-like body, an edge that contacts the side surface forming portion is a surface along the thickness direction from a first surface that is in close contact with the mounting surface forming portion when viewed in the vertical direction. It has an inclined surface that inclines toward the surface,
The article conveying apparatus according to claim 2, wherein a gap is formed between the arc portion and the inclined surface when viewed in the vertical direction. As the plurality of guide rollers, a first guide roller that contacts a first guide surface of the pair of guide surfaces, and a second guide roller that contacts a second guide surface of the pair of guide surfaces, Provided,
A distance between an axis of the support shaft of the first guide roller and the side surface forming portion on the first guide roller side when the first guide roller is attached to the attachment surface forming portion; The distance between the shaft center of the support shaft of the second guide roller and the side surface forming portion on the second guide roller side when the guide roller is attached to the attachment surface forming portion is set equal,
The said plate-shaped body is formed in the shape which becomes symmetrical with respect to the virtual line which passes along the center part of the said thickness direction of the said plate-shaped body seeing along the said left-right direction and the said up-down direction. The article conveying apparatus according to the description.   The said board part is provided with the close_contact | adherence part closely_contact | adhered to the said attachment surface formation part, and the thickness reduction part recessed in the direction opposite to the existing direction of the said attachment surface formation part in the said thickness direction. The article conveyance device according to any one of 1 to 4. The article support unit includes a transfer device that supports the article and moves out and moves along the left-right direction,
The article conveying apparatus according to claim 5, wherein a portion of the plate-like body that overlaps with the support shaft of the guide roller when viewed in the left-right direction is a non-thinned portion where the thinned portion is not formed.

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