JP4795827B2 - Lifter - Google Patents

Description

  The present invention relates to a lifter installed as a loading / unloading device in a rack of an automatic warehouse.

  11 and 12 are diagrams showing an example of a conventional automatic warehouse. FIG. 11 is a front view, and FIG. 12 is a plan view. In a conventional automatic warehouse 90, a rack 91 is provided as a storage device, and a stacker crane 60 and a hand cart 70 are provided as cargo handling devices. In the figure, each person 91, 60, 70 is one, but a plurality of persons may be present. The rack 91 is assembled by connecting a plurality of support columns 92 and beams 93. In the rack 91, as shown in FIG. 11, a plurality of storage spaces 94a and 94b for storing the load W are formed in a lattice shape. The load W is a scroll, and the shaft Wc is supported so that no load is directly applied to the surface. In each of the storage spaces 94a and 94b, receiving members 95 that receive both ends of the shaft Wc are connected to the support column 92. Since the shaft Wc has a circular cross section, a V-shaped groove 95a (FIG. 12) is formed on the upper surface of the receiving member 95 so that the shaft Wc can be stably received. A space 94c at the bottom of the rack 91 is used to store other loads (not shown).

  A passage 96 is provided on one side of the rack 91 as shown in FIG. Rails 97 are laid on the ceiling and floor of the passage 96 as shown in FIG. A stacker crane 60 is installed between the rails 97. A mast 62 is erected on the vehicle body 61 of the stacker crane 60. A carriage 63 is provided between the masts 62. The carriage 63 moves up and down along the mast 62. A slide fork 64 is provided on the carriage 63. The slide fork 64 expands and contracts in the load / unload direction of the load W with respect to the rack 91 (direction perpendicular to the screen in FIG. 11). The slide fork 64 is formed in a concave shape and receives both ends of the shaft Wc of the load W by receiving portions 65 extending upward so that the surface of the load W does not contact the slide fork 64. On the upper surface of the receiving portion 65, a V-shaped groove 65a (FIG. 12) is formed so that both ends of the shaft Wc can be stably received. The carriage 63 is formed in a concave shape, and accommodates the slide fork 64 and the load W inside. The stacker crane 60 travels along the rail 97 along the path 96, moves the carriage 63 up and down, and expands and contracts the slide fork 64 to carry the load W into and out of the storage spaces 94a and 94b of the rack 91.

  The hand cart 70 is driven around the rack 91 other than the passage 96 by the handle 72 being manually pushed by the operator. On the vehicle body 71 of the hand cart 70, receiving members 73 that receive both ends of the shaft Wc are erected so that the surface of the load W does not contact the vehicle body 71. V-shaped grooves 73a are formed on the upper surface of the receiving member 73 so that both ends of the shaft Wc can be stably received. The width of the vehicle body 71 is equal to the width of the load W (the length of the shaft Wc). The handcart 70 is not provided with a function for moving the load W up and down. Therefore, the load W is placed on the receiving material 73 of the handcart 70 or lifted from the receiving material 73 by another device having a lifting function.

An installation space 94f in which a lifter 80 is installed as a loading / unloading device is provided at the lower center of the rack 91. The lifter 80 serves as an entry / exit station where the stacker crane 60 and the hand cart 70 share the load W. FIG. 13 is a view showing the structure of the lifter 80. The lifter 80 is assembled separately from the rack 91, and is installed in the installation space 94 f after the rack 91 is assembled. The frame 81 of the lifter 80 is formed in a reverse concave shape. Inside the left and right side portions 81a of the frame 81, guide rails 82 are attached with the longitudinal direction thereof directed in the vertical direction. A carriage 83 is arranged so as to move up and down along the guide rails 82. Receiving portions 84 that receive both ends of the shaft Wc of the load W are provided on the side surface of each carriage 83 opposite to the side portion 81a. V-shaped grooves (not shown) are formed on the upper surface of each receiving portion 84 so that both ends of the shaft Wc can be stably received. Between the receiving portion 84 and the side surface of the load W, the receiving portion 65 of the stacker crane 60 and the receiving material 73 of the hand cart 70 are inserted. Each carriage 83 is formed with a screw hole (not shown) into which the screw rod 85 is screwed. Each screw rod 85 is rotatably supported by the frame 81 with the axial direction directed in the vertical direction. A motor 86 for rotating one screw rod 85 is disposed on the ceiling 81 b of the frame 81. An interlocking mechanism 87 that rotates the left and right screw rods 85 in synchronism is disposed below the ceiling portion 81b (detailed illustration is omitted). When the motor 86 is driven forward or backward, each screw rod 85 is rotated, each carriage 83 is raised and lowered, and the load W supported by the receiving member 84 is also raised and lowered. Such a structure of the lifter 80 is disclosed in, for example, Patent Document 1 below. However, the lifter of Patent Document 1 is installed outside the rack.

  When the load W transported from the outside by the hand cart 70 is to be stored in the rack 91, the hand cart 70 is first entered into the lifter 80 of the rack 91. Next, the lifter 80 is driven to pick up the load W supported by the receiving member 73 of the handcart 70 at the receiving portion 84 of the carriage 83. Next, the hand cart 70 is moved out of the lifter 80. Next, the stacker crane 60 is driven, and the load W is picked up by the slide fork 64 from the receiving portion 84 of the lifter 80. Then, the stacker crane 60 is driven, and the load W is placed on the receiving material 95 in the predetermined storage spaces 94a and 94b of the rack 91 by the slide fork 64 and stored.

  When unloading the load W stored in the rack 91 to the outside with the hand cart 70, first, the stacker crane 60 is driven and supported by the receiving material 95 in the predetermined storage spaces 94a and 94b by the slide fork 64. Pick up the load W. Next, the stacker crane 60 is driven, the load W is placed on the receiving portion 84 of the carriage 83 of the lifter 80 by the slide fork 64, and the slide fork 64 is withdrawn from the lifter 80. Next, the hand cart 70 is moved into the lifter 80. Next, the lifter 80 is driven, and the load W supported by the receiving portion 84 is placed on the receiving material 73 of the handcart 70. Then, the hand cart 70 is withdrawn from the lifter 80, pushed to a predetermined external location, and the load W is discharged.

Japanese Patent Laid-Open No. 2001-19113

  In the conventional lifter 80 described above, in order to install the lifter 80 in the installation space 94f in the rack 91, the width for forming the installation space 94f is set to the width of the load W and the receiving portion 84 as shown in FIG. The clearance between the load W for picking up the load W and each carriage 83, the thickness of each carriage 83, the thickness of each side portion 81a of the frame 81, and the side portions 81a and the columns 92 for inserting the frame 81 between the columns 92 The total value of the clearance and the thickness of the column 92 should be used. However, in order to increase the rigidity of the frame 81 so that each part of the load W and the lifter 80 can be supported, the thickness of each side part 81a and the ceiling part 81b must be at least about the thickness of the column 92 of the rack 91. Therefore, as shown in FIGS. 11 and 12, the width of the installation space 94f in the rack 91 and the storage space 94b in the same row as that of the rack 91 is remarkably wider than the width of the storage space 94a in the different row. End up. In addition, for each load W to be handled, the frame 81 and the interlocking mechanism 87 must be designed and manufactured according to the width of the load W, and delivery time and cost are required before the lifter 80 is installed.

  The present invention solves the above-mentioned problems, and the object of the present invention is to suppress the widening of the frontage of the rack, shorten the delivery time, and reduce the cost when installing the automatic warehouse in the rack. It is to provide a lifter that can be achieved.

  According to a first aspect of the present invention, there is provided a lifter installed in a rack of an automatic warehouse, plate-like left and right frames fixed to a rack column by a fixture so as to face each other, and each frame And a carriage provided with a receiving portion for receiving the loaded cargo, an elevating mechanism which is arranged on each frame and raises and lowers each carriage up and down, and a drive source which generates a force for driving each elevating mechanism There is provided a lifter characterized by comprising a transmission mechanism for transmitting a force generated from a driving source to each lifting mechanism.

  In this way, the plate-like left and right frames are fixed in close contact with the support posts of the rack of the automatic warehouse by the fixtures, and the support and each part of the lifter are supported by the support posts and the frames. The structure that supports each part of the load and the lifter alone can be lower in rigidity required for the frame, and the frame can be made thinner. Also, the width of the installation space in the rack required for installing the lifter is the width of the load, the clearance between the load for picking up the load from the receiving part and each carriage, the thickness of each carriage, the thickness of each frame, and The total thickness of the support can be set. For this reason, the width of the installation space in the rack and the storage space in the same row are made narrower because the frame is thinner than the conventional structure and the extra clearance is not provided between the frame and the column. Can approach the width of the column storage space. Also, separate left and right frames can be fixed to the rack columns, and the distance between the carriage and the receiving portion can be changed arbitrarily. For each load to be handled, the frame is designed and manufactured according to the width of the load. There is no need, and the time required for designing and manufacturing the frame can be shortened and the cost can be reduced from the conventional structure in which both sides of the frame are connected by the ceiling. Furthermore, the versatility of the lifter can be enhanced. Therefore, when the lifter is installed in the rack of the automatic warehouse, it is possible to suppress the expansion of the rack width, shorten the delivery time, and reduce the cost.

  Further, in a second invention, in the first invention, the transmission mechanism includes a drive shaft that is supported between the frame so as to be rotatably supported between the frames above the load received by the receiving portion. The drive source is provided on a side of the drive shaft, and the lift shaft is driven by the force generated from the drive source to drive each lifting mechanism.

  In this case, since the drive source is disposed on the side of the drive shaft disposed above the load in the lifter, and the drive source and the drive shaft are located at substantially the same height, the ceiling portion of the conventional frame From the structure in which the drive source is disposed above the lifter, the height of the lifter and the installation space in the rack in which the lifter is installed can be reduced. For this reason, the space immediately above the installation space in the rack can be effectively used as a storage space, for example.

  Further, in the third invention, in the first or second invention, in the vicinity of the portion of each frame to be in close contact with the support, it is arranged in the width direction of the support at a predetermined interval slightly wider than the width and in the vertical direction. A plurality of holes are formed so that they are arranged at a predetermined interval, and the fixture is shaped so as to surround the periphery of the column other than the frame side, and the fixture is penetrated through the holes arranged in the width direction of the column. The lifter is characterized in that it is attached to the frame so that the column is held between the fixture and the frame, and the frame is fixed in close contact with the column.

  For example, it is possible to make holes such as taps in the frame and column, and to fix the frame in close contact with the column through screws in each hole. In this structure, the height at which the frame is fixed to the column each time the lifter is installed Since it is necessary to determine the position and the formation position of the hole by meeting, and it is not possible to start the formation of the hole unless these are determined, it takes time and cost to install the lifter. However, according to the frame fixing structure as described above, the formation of the plurality of holes in the frame can be started as long as the installation interval and width of the support columns are known. Further, the frame can be easily fixed by closely contacting the column with the fixing member having a shape surrounding the column other than the frame side without making a hole in the column. For this reason, man-hours can be reduced, the time taken to install the lifter can be shortened, and the cost can be reduced. In general, beams are connected to rack posts at predetermined intervals and spanned between the columns. However, if a plurality of holes are formed in the frame in advance as described above, the attachment of the fixture is hindered by the beams. The frame can be firmly fixed to the column, and the frame is fixed to the column by holding the column through the hole aligned in the width direction of the column. It can be fixed tightly.

  Further, according to a fourth aspect of the present invention, there is provided the lifter according to any one of the first to third aspects, wherein the frames are supported from below by a support that can adjust the support position up and down. .

  If it does in this way, the load of each part of a load and a lifter can be stably supported from the lower part by a support tool, and it can prevent that a frame slips off from a support | pillar. Moreover, since the height which supports a flame | frame with a support tool can be adjusted, the installation height of a flame | frame can be set freely and it becomes possible to improve the versatility of a lifter.

  According to the present invention, a plate-like frame is closely attached to and fixed to a rack post of an automatic warehouse, and the structure of the load and the lifter is supported by the support column and the frame. The width of the lifter and the installation space in the rack in which the lifter is installed can be narrowed, and it is not necessary to design and manufacture a frame according to the width of each load to be handled. It is possible to suppress the spread of the frontage width, shorten the delivery time, and reduce the cost.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of an automatic warehouse according to the present embodiment. The automatic warehouse 100 of the present embodiment is provided with a management device 101, a hand cart 70, a terminal device 79, a ground control panel 102, a stacker crane 60, a rack 1, and a lifter 10. The hand cart 70 and the stacker crane 60 are examples of a cargo handling device, the rack 1 is an example of a storage device, and the lifter 10 is an example of a loading / unloading device. The management apparatus 101 is installed in a management room (not shown). The management apparatus 101 manages the load storage status and the loading / unloading status in the automatic warehouse 100. The operator inputs a loading / unloading instruction for the load using the management apparatus 101. The hand cart 70 is manually pushed by the operator and travels to convey the load. The terminal device 79 is installed on the body of the hand cart 70 or is carried by an operator who operates the hand cart 70. A signal requesting a command is transmitted wirelessly from the terminal device 79 to the management device 101. An entry / exit command is transmitted from the management device 101 to the terminal device 79 wirelessly or by wire. The terminal device 79 displays the contents of the received entry / exit command on a display (not shown). The worker looks at the contents of the loading / unloading command displayed on the terminal device 79 and performs loading / unloading work with the hand cart 70.

  The ground control panel 102 is installed in the vicinity of the rack 1. The stacker crane 60 travels along the rack 1 and loads and unloads loads into and from the storage space provided in the rack 1. A control panel 69 is installed on the body of the stacker crane 60. The control panel 69 is also referred to as an onboard control panel with respect to the ground control panel 102. The control panel 69 controls the operation of each part of the stacker crane 60. A lifter 10 is provided in the rack 1. The lifter 10 raises and lowers the loaded load, and delivers the load between the hand cart 70 and the stacker crane 60. The lifter 10 is provided with a control panel 9. The control panel 9 is installed in the vicinity of the lifter 10 and controls each part of the lifter 10. The lifter 10 constitutes an embodiment of the lifter in the present invention.

  FIG. 2 is a diagram showing an operation unit for operating the lifter 10 provided on the control panel 9. Reference numeral 9a denotes a manual automatic changeover switch for switching whether the lifter 10 is operated manually or automatically. Reference numeral 9b denotes a loading / unloading switch for switching whether the lifting work is performed or not. Reference numeral 9c denotes a work completion button for inputting that the loading / unloading operation has been completed during manual operation. 9d is a lift switch that raises or lowers the lifter 10 during manual operation. 9e is an emergency stop button for emergency stop of the lifter 10 during automatic operation.

  3 and 4 are views showing the appearance of the automatic warehouse 100. FIG. 3 is a front view, and FIG. 4 is a plan view. In the figure, since the load W, the stacker crane 60, and the hand cart 70 have the same structure as described in FIGS. 11 and 12, the same reference numerals are used and redundant description is omitted. Further, in the figure, one rack 1, stacker crane 60, and handcart 70 are each provided, but a plurality of racks may be provided.

  The rack 1 of the automatic warehouse 100 is assembled by connecting a plurality of columns 2 and beams 3. Each strut 2 has a square cross section. In the rack 1, a plurality of storage spaces 4a and 4b for storing the load W are formed in a lattice shape as shown in FIG. In each of the storage spaces 4a and 4b, receiving members 5 that receive both ends of the shaft Wc of the load W are provided so as to be connected to the column 2 in order to support the load W without contacting the surface of the load W. . Since the shaft Wc has a circular cross section, a V-shaped groove 5a (FIG. 4) is formed on the upper surface of the receiving member 5 so that the shaft Wc can be stably received. The space 4c at the bottom of the rack 1 and the space 4d at the center are used for storing other loads (not shown).

  On one side of the rack 1, a passage 6 is provided as shown in FIG. Rails 7 are laid on the ceiling and floor of the passage 6 as shown in FIG. A stacker crane 60 is installed between the rails 7. The stacker crane 60 travels along the rail 6 along the rail 6, raises and lowers the carriage 63, and expands / contracts the slide fork 64 to carry the load W in and out of the storage spaces 4 a and 4 b of the rack 1. The hand cart 70 is pushed by the operator with the handle 72 and travels around the rack 1 other than the passage 6 to convey the load W received from the rack 1 from the outside, or from the rack 1 by the stacker crane 60. The unloaded cargo W that is unloaded is transported to the outside. In the lower part of the center of the rack 1, there is provided an installation space 4 f for installing a lifter 10 that supports the load W as a loading / unloading device and lifts it. The lifter 10 serves as an entry / exit station where the stacker crane 60 and the hand cart 70 share the load W. On the side opposite to the passage 6 of the lifter 10, as shown in FIG. 4, the aforementioned control panel 9 is installed so as not to prevent the handcart 70 from entering the lifter 10.

  5-8 is a figure which shows the structure of the lifter 10. As shown in FIG. FIG. 5 is a front view of the lifter 10. FIG. 6 is an enlarged view of the vicinity of the left carriage 20 in FIG. 7 is a cross-sectional view taken along the line AA in FIG. FIG. 8 is an enlarged view of the vicinity of the carriage 20 of FIG. The lifter 10 is installed in an installation space 4 f provided in the rack 1 after the rack 1 is assembled. The front side of the lifter 10 in FIG. 5 and the left side in FIG. 7 are the side of the load W with the stacker crane 60 (passage 6 side), and the back side in FIG. 5 and the right side in FIG. This is the mating side (the side opposite to the passage 6).

  The left and right frames 11 of the lifter 10 are made of different thin steel plates as shown in FIGS. Each frame 11 is fixed to a support column 2 that forms the installation space 4f of the rack 1 in close contact with a plurality of bolts 12 and plate nuts 13 so as to face each other. Specifically, as shown in FIG. 7, the columns 11 are arranged in close contact with the columns 2 on both sides of the frame 11 in the width direction of the columns 2 at a predetermined interval slightly wider than the width and at a predetermined interval in the vertical direction. A plurality of holes 11a are formed in the substrate. Screw holes (not shown) are formed in each plate-like nut 13 at a predetermined interval similar to the holes 11a that are slightly wider than the width of the support column 2. Then, as shown in FIGS. 5 and 7, the bolts 12 are penetrated from the opposite side of the support column 2 into the holes 11 a arranged horizontally at appropriate positions of the frames 11, and the bolt 12 is inserted into the front side and the rear side of the support column 2. Each side is passed through and screwed into a screw hole of a plate-like nut 13 disposed on the side opposite to the frame 11 of the column 2. Then, the bolt 12 and the plate-like nut 13 are assembled into a concave shape, and are attached to the frame 11 in a state of surrounding three sides other than the frame 11 side of the column 2, and the column 2 is attached to the bolt 12, the plate-like nut 13 and the frame. 11 and the frame 11 is fixed in close contact with the support column 2. The holes 11a arranged side by side at appropriate positions of the respective frames 11 are, for example, bolts 12 and plate nuts 13 attached by the beams 3 spanned between the columns 2 such as the inclined beams 3 shown in FIG. The position of each frame 11 that is not obstructed (that is, the position of each frame 11 where the beam 3 and the column 2 are not connected) and the center of both sides of each frame 11 that can firmly fix each frame 11 to each column 2 These are a plurality of holes 11a formed so as to be aligned in the width direction of the column 2 at a plurality of positions above and below. Bolt 12 and plate nut 13 constitute one embodiment of a fixture. Instead of the bolt 12 and the plate-like nut 13, for example, a U-shaped bolt and a hexagon nut may be used as a fixture. In that case, U-shaped bolts are passed through the holes 11a arranged side by side at appropriate positions in each frame 11 from the support 2 side through the front side and the back side of the support column 2, and formed at each end of the U-shaped bolt. The hexagon nut is screwed into the threaded part. Then, the U-shaped bolt support 2 is attached to the frame 11 in a state of surrounding three sides other than the frame 11 side, the support 2 is held by the U-shaped bolt and the frame 11, and the frame 11 is in close contact with the support 2. Fixed. In addition to the above, a fixture having a shape surrounding the periphery of the support column 2 other than the frame 11 side, such as a concave shape, a U shape, a V shape, a W shape, or the like may be used.

As shown in FIGS. 5 and 7, a vertical portion of the L-shaped steel material 14 is fixed to the lower end portion of each frame 11 by welding or a screw. Jack bolts 15 are installed on the floor surface near the lower end of each frame 11. Each frame 11 is supported from below by a jack bolt 15 via an L-shaped steel material 14. Specifically, the jack bolt 15 includes a nut 15a, 15b, a bolt 15c for screwing the nut 15a, 15b, and a base 15d to which the head of the bolt 15c is fixed so that the tip of the bolt 15c faces upward. . In the horizontal portion of the L-shaped steel material 14, a hole (not shown) through which the bolt 15c passes is formed. Then, for example, the nut 15b of the jack bolt 15 is deeply screwed into the threaded portion (not shown) of the bolt 15c, and the bolt 15c is passed through the hole in the vertical portion of the L-shaped steel material 14 from the side opposite to the frame 11 to The nuts 15a and 15b, the bolt 15c, and the base 15d are temporarily fixed to the frame 11 by screwing 15a into the screw portion of the bolt 15c. Further, after fixing each frame 11 to the support 2, the base 15 d is landed on the floor surface and fixed to the floor surface by the anchor bolt 18, and each nut 15 a, 15 b is brought into close contact with the vertical portion of the L-shaped steel material 14. Each frame 11 is supported from below by sandwiching and fixing the vertical portion from above and below. The height position at which each frame 11 is supported by the jack bolt 15 can be arbitrarily adjusted within the range of the length of the threaded portion of the bolt 15c. The jack bolt 15 constitutes an embodiment of a support tool.

  As shown in FIG. 7, a guide rail 19 is fixed vertically and a carriage 20 is disposed at the approximate center of each frame 11. On the surface of each carriage 20 on the frame 11 side, as shown in FIGS. 6 and 8, a sliding portion 21 that is engaged with the guide rail 19 is provided. Each carriage 20 is guided to move in the vertical direction as the sliding portion 21 slides along the guide rail 19. On the surface of each carriage 20 opposite to the frame 11, as shown in FIGS. 5 to 8, a V-shaped receiving portion 22 that stably receives both ends of the shaft Wc of the load W carried into the lifter 10, A reinforcing portion 23 for reinforcing the receiving portion 22 is provided.

  As shown in FIG. 7, sprockets 24 a to 24 c and a lift chain 25 are disposed on the opposite side of the passage 11 from the carriage 20 of each frame 11. The sprockets 24b and 24c are rotatably attached to the respective frames 11. The lift chain 25 is hung on each of the sprockets 24a to 24c. The sprockets 24a to 24c and the lift chain 25 are elevating mechanisms that elevate and lower the carriages 20 up and down. Most of the sprockets 24b and 24c and the lift chain 25 are covered with a cover 26 fixed to each frame 11 for safety. As shown in FIG. 8, an anchor 27 is provided at the end of each carriage 20 on the cover 26 side so as to protrude into the cover 26. The anchor 27 is connected to the lift chain 25.

  5 and 7, a motor 28, a gear block 29, a drive shaft 30, and a pillow block 31 are arranged above the load W. The motor 28 is a drive source that generates a force for driving each lifting mechanism. The gear block 29, the drive shaft 30, and the pillow block 31 are transmission mechanisms that transmit the force generated from the motor 28 to each lifting mechanism. Each pillow block 31 is fixed to the upper end of each frame 11. Inside each pillow block 31, a bearing 31a and a sprocket 24a are provided as shown in FIG. Both end portions of the drive shaft 30 are attached to each pillow block 31. The drive shaft 30 is rotatably supported by each pillow block 31 and is horizontally placed between the frames 11. A gear block 29 is arranged in the vicinity of the right side of the pillow block 31 on the left side in FIG. As shown in FIG. 7, the gear block 29 is supported by being penetrated by a bolt 32 screwed into the frame 11 and the drive shaft 30. On the side surface of the gear block 29, as shown in FIG. 5, a bearing 29a that penetrates the drive shaft 30 and is rotatably supported is provided. Inside the gear block 29, a gear mechanism (not shown) that transmits the driving force of the motor 28 and rotates the drive shaft 30 is provided.

  A motor 28 is attached to the side surface of the gear block 29 on the side of the passage 6 as shown in FIG. In other words, the motor 28 is arranged at substantially the same height as the drive shaft 30 on the side of the drive shaft 30 parallel to the loading / unloading direction of the load W with respect to the lifter 10. Most of the motor 28 and the gear block 29 and the drive shaft 30 and each pillow block 31 are covered with a cover 33 fixed to each frame 11 for safety. When the motor 28 is driven forward or backward, the gear mechanism of the gear block 29, the drive shaft 30, the sprockets 24a to 24c, and the lift chain 25 are sequentially rotated, and the carriages 20 are moved up and down.

  As shown in FIG. 7, position detection sensors 34a to 34c are arranged on the path 6 side of the carriage 20 of the frame 11 on the left side in FIG. Each position detection sensor 34a-34c consists of a limit switch, and is connected to the above-mentioned control panel 9 (FIG. 1). A rail 35 is fixed vertically on the side of the passage 6 from the carriage 20 of the frame 11. Each of the position detection sensors 34 a to 34 c is attached to the rail 35 so as to face the lift chain 25. The height position of each of the position detection sensors 34 a to 34 c can be arbitrarily adjusted within the range of the length of the rail 35. As shown in FIGS. 6 to 8, a dog 36 is fixed to the lower end portion of the carriage 20 so as to protrude toward the rail 35 so as to come into contact with the position detection sensors 34a to 34c. The position detection sensor 34a is attached at a position where it comes into contact with the dog 36 when the carriage 20 is at the upper limit position P1 shown in FIG. The position detection sensor 34b is attached at a position where the carriage 20 comes into contact with the dog 36 when the carriage 20 is at the load position P2 of the load W with respect to the stacker crane 60 and the handcart 70 shown in FIG. The position detection sensor 34c is attached at a position where it comes into contact with the dog 36 when the carriage 20 is at the lower limit position P3 shown in FIG. When the dog 36 is separated from the position detection sensors 34a to 34c, the position detection sensors 34a to 34c are in the OFF state. When the carriage 20 moves up and down and the dog 36 contacts the position detection sensors 34a to 34c, the position detection sensors 34a to 34c are turned on. A CPU (not shown) provided in the control panel 9 detects the lift position of the carriage 20 from the ON / OFF states of the position detection sensors 34a to 34c.

  In FIG. 5, a load detection sensor 37 is disposed between the carriage 20 and the pillow block 31 of the left frame 11. The presence detection sensor 37 is composed of a retroreflective photosensor and is connected to the control panel 9. A bracket 38 is vertically fixed between the carriage 20 and the pillow block 31 of the frame 11. The presence detection sensor 37 is attached to the bracket 38 downward. As shown in FIGS. 6 and 8, a hole 22 a through which light emitted from the load detection sensor 37 passes is formed in the receiving portion 22 of the carriage 20 below the load detection sensor 37. A reflection plate 39 that reflects light emitted from the occupancy detection sensor 37 toward the occupancy detection sensor 37 is fixed to the upper surface of the reinforcing portion 23 below the hole 22a. When the axis Wc of the load W is not above the receiving portion 22 of the carriage 20, the light emitted from the load detection sensor 37 is reflected by the reflection plate 39 and received by the load detection sensor 37. The load detection sensor 37 is in an OFF state. When the shaft Wc of the load W is above the receiving portion 22 of the carriage 20, the light emitted from the load detection sensor 37 is blocked by the shaft Wc and is not received by the load detection sensor 37. The sensor 37 is turned on. The CPU provided in the control panel 9 detects the presence / absence of the load W on the receiving portion 22 from the ON / OFF state of the load detection sensor 37.

  In FIG. 5, the entry detection sensors 40 a and 40 b are arranged between the sprocket 24 c of the left frame 11 and the L-shaped steel material 14. The approach detection sensors 40a and 40b are made of retroreflective photosensors and are connected to the control panel 9. A rail 41 is horizontally fixed between the sprocket 24 c of each frame 11 and the L-shaped steel material 14. Each approach detection sensor 40a, 40b is attached to the left rail 41 so as to face the inside of the lifter 10 as shown in FIG. The right rail 41 is fixed with a reflecting plate 42 that reflects the light emitted from the entry detection sensors 40a and 40b toward the entry detection sensors 40a and 40b. When the handcart 70 (FIG. 3 etc.) does not enter the inside of the lifter 10 (between both frames 11), the light emitted from each of the entry detection sensors 40a and 40b is reflected by the reflecting plate 42 and enters each entry. Since the detection sensors 40a and 40b receive the light, each of the entry detection sensors 40a and 40b is in an OFF state. When the handcart 70 enters the inside of the lifter 10, the light emitted from each approach detection sensor 40 a, 40 b is blocked by the vehicle body 71 of the handcart 70 and is not received by each entry detection sensor 40 a, 40 b. The sensors 40a and 40b are turned on. The CPU provided in the control panel 9 detects the presence or absence of the hand cart 70 in the lifter 10 from the ON / OFF states of the entry detection sensors 40a and 40b.

  Above the lifter 10, as shown in FIG. 5, a reinforcing beam 3 a is attached between the columns 2 forming the installation space 4 f of the rack 1. As shown in FIGS. 5 and 7, guide rollers 43 are symmetrically installed on the floor surface inside the installation space 4 f at intervals substantially equal to the width of the vehicle body 71 of the hand cart 70. When the hand cart 70 enters the lifter 10, each guide roller 43 rolls in contact with the side surface of the car body 71 of the hand cart 70 so that the center of the car body 71 and the center of the lifter 10 coincide. The approach is guided. For this reason, the shaft Wc of the load W supported by the receiving material 73 of the hand cart 70 can be positioned between the carriages 20 without contacting each part of the lifter 10 as shown in FIG. A stopper 44 is installed on the floor surface of the installation space 4f on the side of the passage 6 as shown in FIG. When the hand cart 70 enters the lifter 10 from the side opposite to the passage 6, the front surface of the vehicle body 71 comes into contact with the stopper 44, and thus the advance of the hand cart 70 is restricted. When the handcart 70 is stopped with the front surface of the vehicle body 71 in contact with the stopper 44, the center of the load W supported by the receiving material 73 of the handcart 70 and the center of each carriage 20 are as shown in FIG. Accordingly, the shaft Wc of the load W can be supported by the receiving portion 22 of each carriage 20 of the lifter 10.

  In order to receive the load W in the automatic warehouse 100 described above, first, the operator inputs a storage instruction to the management apparatus 101 in FIG. Next, the management device 101 transmits a warehousing command based on the inputted warehousing instruction to the ground control panel 102 and the terminal device 79 of the handcart 70. Next, the terminal device 79 receives the warehousing instruction and displays the contents of the instruction. Next, the operator looks at the display on the terminal device 79, operates the hand cart 70, supports the load W to be received by the receiving material 73 of the hand cart 70, and carries it from the outside. Next, the operator operates the hand cart 70 to stop the hand cart 70 just before the installation space 4 f of the rack 1 and then enter the lifter 10. At this time, the lifter 80 is driven so that the shaft Wc of the load W supported by the receiving material 73 of the hand cart 70 does not come into contact with the receiving portion 22 or the reinforcing portion 23 of each carriage 20, and each carriage 20 is illustrated in FIG. 5 is positioned below the mating position P2. Specifically, when the manual automatic changeover switch 9a in FIG. 2 is switched to automatic and the lifter 10 is in automatic operation, the operator switches the entry / exit changeover switch 9b to warehousing so that the control panel in FIG. The CPU 9 automatically drives the motor 28 in reverse rotation based on the ON / OFF states of the position detection sensors 32a to 32c in FIG. 5 and the like, so that each carriage 20 is engaged and the load W below the position P2 is carried in. A predetermined position that does not get in the way, that is, a position below the axis Wc of the load W supported by the receiving material 73 of the hand cart 70 is moved. In addition, when the manual automatic changeover switch 9a in FIG. 2 is changed to manual and the lifter 10 is in manual operation, the operator switches the entry / exit changeover switch 9b to entry and turns the lift switch 9d downward. Thus, the CPU 28 of the control panel 9 is driven to rotate the motor 28 in the reverse direction to lower each carriage 20, and when each carriage 20 is lowered to a position where it does not interfere with loading of the load W, the lift switch 9d is returned to neutral. As a result, the CPU of the control panel 9 stops the driving of the motor 28 and stops each carriage 20. In addition, the raising / lowering of each carriage 20 exceeding the upper limit position P1 or the lower limit position P3 is prohibited by the CPU of the control panel 9.

  When an operator enters the hand cart 70 into the lifter 10 and stops the front surface of the vehicle body 71 in contact with the stopper 40, the lifter 80 is driven and the hand cart 70 is received by the receiving portion 22 of each carriage 20. The load W supported by the receiving material 73 is taken up. Specifically, when the lifter 10 is in automatic operation, the occupancy detection sensor 37 detects the axis Wc of the load W supported by the receiving material 73 and is turned on, and the entry detection sensors 40a and 40b are turned on. When a certain period of time elapses while the vehicle body 71 of the hand cart 70 is detected and turned on, the CPU of the control panel 9 automatically drives the motor 28 to rotate forward until the position detection sensor 34a is turned on. Each carriage 20 is moved to the upper limit position P <b> 1 shown in FIG. 5, the shaft Wc of the load W is received by the receiving portion 22 of each carriage 20, and the load W is lifted from the receiving material 73 of the hand cart 70. At this time, the shaft Wc of the load W is located above the upper surface of the receiving material 73 of the handcart 70. The surface of the load W is separated from the cover 33. Further, when the lifter 10 is being operated manually, the operator turns the lift switch 9d upward to cause the CPU of the control panel 9 to drive the motor 28 in the normal direction so that each carriage 20 is raised. When the receiving portion 22 of the carriage 20 receives the shaft Wc of the load W, the load W is lifted from the receiving material 73, and when the shaft Wc is positioned above the upper surface of the receiving material 73, the lift switch 9d is returned to neutral. The drive of the motor 28 is stopped by the CPU of the panel 9 to stop each carriage 20.

  When the load W is picked up from the hand cart 70 by the lifter 10, the operator operates the hand cart 70 to move the hand cart 70 out of the lifter 10. Next, the lifter 80 is driven to lower each carriage 20 to the engagement position P2. Specifically, when the lifter 10 is in automatic operation, the entry detection sensors 40a and 40b no longer detect the vehicle body 71 of the handcart 70, and the CPU of the control panel 9 is turned on after a certain period of time while the vehicle is in the OFF state. Until the position detection sensor 34b is automatically turned ON, the motor 28 is driven in reverse to move each carriage 20 to the mating position P2 shown in FIG. Further, when the lifter 10 is being operated manually, the operator turns the elevating switch 9d downward to cause the CPU of the control panel 9 to drive the motor 28 in the reverse direction so that each carriage 20 is moved downward. When the detection sensor 34b is turned on, the CPU of the control panel 9 stops driving the motor 28 regardless of the operation state of the up / down switch 9d and stops the carriages 20 at the engagement position P2.

  When each carriage 20 is positioned at the mating position P2, when the lifter 10 is in automatic operation, the control panel 9 automatically notifies the ground control panel 102 that the loading of the load W into the lifter 10 has been completed. A completion notification signal is transmitted. Further, when the lifter 10 is being operated manually, if the load detection sensor 37 is turned on when the operator presses the work completion button 9c in FIG. The completion notification signal is transmitted to. When the completion notification signal is received by the ground control panel 102, an entry command is transmitted from the ground control panel 102 to the control panel 69 of the stacker crane 60. When the warehousing command is received by the control panel 69, the stacker crane 60 is driven based on the warehousing command to perform the operations of traveling the vehicle body 61, raising and lowering the carriage 63, and extending and retracting the slide fork 64. The load W supported by the receiving portion 22 of the lifter 10 is picked up by the slide fork 64 and accommodated in the carriage 63. In addition to picking up the load W from the lifter 10 with the slide fork 64 in this way, each carriage 20 of the lifter 10 is lowered and the load W supported by the receiving portion 22 is placed on the receiving portion 65 of the slide fork 64. It may be arranged. Thereafter, the stacker crane 60 is driven, and the vehicle W 61 is moved, the carriage 63 is moved up and down, and the slide fork 64 is expanded and contracted, whereby the load W accommodated in the carriage 63 is moved by the slide fork 64. Then, it is placed on the receiving material 5 in the predetermined storage space 4a, 4b of the designated rack 1 and stored.

  On the other hand, when unloading the load W in the automatic warehouse 100 described above, first, the operator inputs an unloading instruction to the management apparatus 101. Next, the management apparatus 101 transmits a delivery command based on the entered delivery instruction to the terminal device 79 of the hand cart 70 and the ground control panel 102. When the exit command is received by the terminal device 79, the terminal device 79 displays the content of the command. Next, the operator looks at the display on the terminal device 79, operates the handcart 70, stops the front of the installation space 4f of the rack 1, and the load W to be unloaded is a predetermined storage space 4a, 4b of the rack 1. Waiting to be carried into the lifter 10. At this time, the operator switches the manual / automatic switch 9a to manual or automatic, and switches the loading / unloading switching switch 9b to shipping.

  When the exit command from the management apparatus 101 is received by the ground control panel 102, the exit command is transmitted from the ground control panel 102 to the control panel 69 of the stacker crane 60 and the control panel 9 of the lifter 10. When the delivery command is received by the control panel 69, the stacker crane 60 is driven based on the delivery command to perform the operations of traveling the vehicle body 61, raising and lowering the carriage 63, and extending and retracting the slide fork 64. The cargo W to be delivered supported by the receiving material 5 in the predetermined storage spaces 4 a and 4 b is picked up by the slide fork 64 and accommodated in the carriage 63.

  Further, the stacker crane 60 is driven to carry out the vehicle body 61, the carriage 63 is moved up and down, and the slide fork 64 is expanded and contracted, whereby the load W accommodated in the carriage 63 is lifted by the slide fork 64. 10 is loaded into the receiving portion 22 of each carriage 20 and the slide fork 64 is withdrawn from the lifter 10. At this time, the lifter 80 is driven so that the shaft Wc of the load W supported by the slide fork 64 does not come into contact with the receiving portion 22 or the reinforcing portion 23 of each carriage 20 of the lifter 10, so that each carriage 20 is engaged with each other. Keep it at P2. Specifically, when the lifter 10 is in automatic operation, when the exit command transmitted from the ground control panel 102 is received by the control panel 9 of the lifter 10, the CPU of the control panel 9 automatically activates the lifter 80. The motor 28 is driven until the position detection sensor 34b is turned on to move the carriages 20 to the engagement position P2. When the lifter 10 is being operated manually, the operator operates the lift switch 9d to drive the motor 28 to the CPU of the control panel 9 to move the carriages 20 up and down, thereby detecting the position detection sensor 34b. In the ON state, the CPU of the control panel 9 stops driving the motor 28 regardless of the operation state of the up / down switch 9d, and stops the carriages 20 at the engagement position P2. In addition to placing the load W on the receiving portion 22 of the lifter 10 with the slide fork 64 as described above, the loads 20 supported by the receiving portion 65 of the slide fork 64 are raised by raising the carriages 20 of the lifter 10. W may be picked up by the receiving portion 22 of each carriage 20.

  When the load W is carried out into the lifter 10 and supported by the receiving portion 22 of the lifter 10, the operator operates the hand cart 70 to enter the lifter 10. At this time, the lifter 80 is driven so that the shaft Wc of the load W supported by the receiving portion 22 does not contact the receiving material 73 of the handcart 70 so that each carriage 20 is positioned at the upper limit position P1 in FIG. Keep it. Specifically, when the lifter 10 is in automatic operation, the CPU of the control panel 9 detects the position when a certain period of time elapses while the load detection sensor 37 detects the axis Wc of the load W and remains in the ON state. The motor 28 is driven forward until the sensor 34a is turned on to move each carriage 20 to the upper limit position P1. Further, when the lifter 10 is being operated manually, the operator turns the lift switch 9d upward to cause the CPU of the control panel 9 to drive the motor 28 in the normal direction so that each carriage 20 is moved upward. When the detection sensor 34a is turned on, the CPU of the control panel 9 stops driving the motor 28 and stops each carriage 20 at the upper limit position P1 regardless of the operation state of the lift switch 9d.

  When an operator enters the hand cart 70 into the lifter 10 and stops the front surface of the vehicle body 71 in contact with the stopper 44, the lifter 80 is driven and supported by the receiving portion 22 of each carriage 20. The loaded load W is placed on the receiving material 73 of the hand cart 70. Specifically, when the lifter 10 is in automatic operation, when the entry detection sensors 40a and 40b detect the vehicle body 71 of the handcart 70 and remain in the ON state, the CPU of the control panel 9 The motor 28 is driven reversely until the fixed time elapses after the position detection sensor 34b is automatically turned on, or until the position detection sensor 34c is turned on, so that each carriage 20 is moved below the engagement position P2. The load W supported by the receiving portion 22 is placed on the receiving material 73 by being moved to a predetermined position that does not interfere with the unloading of the load W. Further, when the lifter 10 is being operated manually, the operator turns the elevating switch 9d downward to cause the CPU of the control panel 9 to drive the motor 28 in the reverse direction so that each carriage 20 is moved downward from the engagement position P2. The load W supported by the receiving portion 22 is lowered and placed on the receiving material 73. When each carriage 20 is lowered to a position where it does not interfere with the unloading of the load W, the elevator switch 9d is returned to the neutral position to stop the CPU of the control panel 9 from driving the motor 28 and stop each carriage 20. . Thereafter, the operator leaves the hand cart 70 from the lifter 10, pushes it to a predetermined external location, and unloads the load W.

  According to the above description, the lifter 10 fixes the left and right plate-like frames 11 to the pillars 2 forming the installation space 4f in the rack 1 by the bolts 12 and the plate-like nuts 13 so that they are fixed. Thus, the load W and the lifter 10 are supported. Therefore, the rigidity required for the frame 11 can be lower than the structure in which the load W and each part of the lifter 80 are supported only by the frame 81 of the conventional lifter 80 shown in FIG. 13, and the frame 11 can be made thinner. it can. Further, the width of the installation space 4f in the rack 1 required for installing the lifter 10 is the width of the load W, the clearance between the load W for picking up the load W from the receiving portion 22 and each carriage 20, and each carriage 20 , The thickness of each frame 11, and the total thickness of the support column 2. For this reason, compared with the structure of the conventional lifter 80, the installation space 4f in the rack 1 and the storage space in the same row as the frame 11 are thinned and an extra clearance is not provided between the frame 11 and the support column 2. The widths of 4b and 4d can be narrowed to approach the widths of the storage spaces 4a and 4c in different columns.

  Further, since the motor 28 is disposed on the side of the drive shaft 30 disposed above the load W in the lifter 10 and the motor 28 and the drive shaft 30 are positioned at substantially the same height, the conventional lifter 80 The height of the lifter 10 and the installation space 4f in the rack 1 in which the lifter 10 is installed can be made lower than the structure in which the motor 86 is disposed above the ceiling 81b of the frame 81. Therefore, the space 4d (FIG. 3) immediately above the installation space 4f in the rack 1 can be effectively used as a storage space, for example. In the present embodiment, the space 4d is used as a storage space, and a reinforcing beam 3a is installed in the space 4d to improve the stability of the column 2 and the lifter 10 that form the installation space 4f.

  In addition, since the separate left and right frames 11 are respectively fixed to the support columns 2 of the rack 1 and the interval between the carriage 20 and the receiving portion 22 can be arbitrarily changed, each load W handled depends on the width of the load W. There is no need to design and manufacture the frame 11, and the design and manufacturing time of the frame 11 can be shortened and the cost can be reduced from the structure in which both side portions 81a of the frame 81 of the conventional lifter 80 are connected by the ceiling portion 81b. Can do. Moreover, the versatility of the lifter 10 can be improved. The drive shaft 30 needs to be designed and manufactured according to the width of the load W. However, the cover 33 only needs to cover the motor 28, the drive shaft 30 and the like. It is not necessary to design and manufacture the length of the cover 33. For example, it is possible to manufacture a part for the cover 33 having a length shorter than the width of the smallest load among the loads that are assumed to be handled, and to connect and assemble a plurality of the parts. You can do it.

  Also, for example, holes such as taps can be made in the frame and the column, and the frame can be fixed in close contact with the column through the holes. In this structure, the frame is fixed to the column every time the lifter is installed. It is necessary to determine the height position and the hole formation position by arrangement, and since the holes cannot be formed until these positions are determined, it takes time and cost to install the lifter. However, according to the fixing structure of the frame 11 as described above, the formation of the plurality of holes 11a in the frame 11 can be started as long as the installation interval and width of the support columns 2 are known. Further, without making a hole in the support column 2, the frame 11 is attached to the support column 2 with the fixtures in a shape surrounding the periphery of the support column 2 other than the frame 11 side, that is, bolts 12 and plate nuts 13, and easily fixed. can do. For this reason, man-hours can be reduced, and the time taken to install the lifter 10 can be shortened to reduce the cost. In general, the beam 3 is connected to the support column 2 of the rack 1 at a predetermined interval and is spanned between the support columns 2. However, if a plurality of holes 11a are formed in the frame 11 in advance as described above, The bolts 12 are passed through holes 11a arranged in the width direction of the support column 2 at the position of the frame 11 where the attachment of the bolts 12 and the plate nuts 13 is not obstructed and the frame 11 can be firmly fixed to the support column 2. By holding the column 2 between the plate-like nut 13 and the frame 11, the frame 11 can be securely and easily adhered and fixed to the column 2.

  Further, since each frame 11 is supported by the jack bolt 15 from below via the L-shaped steel material 14, the load of each part of the load W and the lifter 10 is stably supported, and each frame 11 is prevented from sliding down from the column 2. Can be prevented. Moreover, since the height which supports a flame | frame in the range of the length of the volt | bolt 15c of the jack volt | bolt 15 can be adjusted arbitrarily, the installation height from the floor surface of the flame | frame 11 can be set freely, and the general purpose of the lifter 10 can be set. It is possible to further improve the performance.

  Therefore, as a result of the above, when the lifter 10 is installed in the installation space 4f in the rack 1 of the automatic warehouse 100, it is possible to suppress the expansion of the front width of the rack 1, shorten the delivery time, and reduce the cost. .

  The present invention can adopt various forms other than the above embodiment. For example, although the example which applied this invention to the lifter 10 which supports and lifts the axis | shaft Wc of the load W which is a roll is given in the above embodiment, this invention raises / lowers the load of forms other than this. It can also be applied to lifters. In that case, a carriage, a receiving portion, an elevating mechanism, a transmission mechanism, a drive source, and the like that can stably support and lift the load according to the type of load to be handled may be used.

  9 and 10 are diagrams showing a lifter 50 according to another embodiment. FIG. 9 is a front view of the lifter 50. 10 is a cross-sectional view taken along line BB in FIG. In each figure, for the sake of convenience, among the same parts as those described with reference to FIGS. 3 to 8, the same reference numerals are given to the parts necessary for the following description, and the other parts are omitted from the reference numerals. The lifter 50 of this embodiment is installed in an installation space 4f formed in a rack of an automatic warehouse (not shown). Further, the lifter 50 raises and lowers the pallet Pa carried in by a stacker crane or a hand truck (not shown) and the load W1 placed on the pallet Pa together with the pallet Pa. The structure of such an automatic warehouse, rack, stacker crane, and hand truck that handles the pallet Pa and the load W1 is the same as that of a publicly known one, so that illustration is omitted. The front side of the lifter 50 in FIG. 9 and the left side in FIG. 10 are the side of the load W with the stacker crane, and the back side in FIG. 9 and the right side in FIG. 10 are the side of the load W with the hand truck.

  The left and right frames 51 of the lifter 50 are made of different thin steel plates as shown in FIGS. Each frame 51 is formed with a plurality of holes 51a, similar to the plurality of holes 11a of the frame 11 described above. Each frame 51 is fixed in close contact with a column 2 forming a rack installation space 4f by means of bolts 12 and plate-like nuts 13. The fixing structure of the frame 51 is the same as the fixing structure of the frame 11 described above. Each frame 51 is supported from below by jack bolts 15 via L-shaped steel members 59. The support structure of the frame 51 is the same as the support structure of the frame 11 described above. As shown in FIG. 10, the guide rail 19 is fixed vertically at the center of each frame 51. In each frame 51, a carriage 52 is engaged with the guide rail 19 and arranged to be movable in the vertical direction. The engagement structure between the carriage 52 and the guide rail 19 is the same as the above-described engagement structure between the carriage 20 and the guide rail 19. As shown in FIG. 9, an L-shaped receiving portion 53 that stably receives the lower surface of the pallet Pa carried into the lifter 50 is provided on the surface of each carriage 52 opposite to the frame 51. As shown in FIG. 10, an elevating mechanism including sprockets 54a and 54b and a lift chain 55 hung on the sprockets 54a and 54b is disposed on the side of each guide rail 19 of each frame 51. One side end of each carriage 52 is connected to each lift chain 55. The connection structure between the carriage 52 and the lift chain 55 is the same as the connection structure between the carriage 20 and the lift chain 25 described above.

  Above the load W, a transmission mechanism including a motor 45 as a drive source, a gear block 46, drive shafts 47a to 47c, pillow blocks 49a to 49c, sprockets 56a to 56c, and a lift chain 57 is disposed. Each pillow block 49 a to 49 c is fixed to the upper end of each frame 51. Both end portions of the drive shafts 47a to 47c are rotatably supported by the pillow blocks 49a to 49c. A sprocket 56a is provided inside the pillow block 49a, sprockets 54a and 56b are provided inside the pillow block 49b, and sprockets 54a and 56c are provided inside the pillow block 49c. Each lift chain 57 is hung on each sprocket 56a to 56c. As shown in FIG. 10, the gear block 46 is supported by a bolt 32 screwed into the frame 51 and a drive shaft 47 a penetrating the gear block 46. Inside the gear block 46, a gear mechanism (not shown) that transmits the driving force of the motor 45 to rotate the drive shaft 47a is provided. The motor 45 is fixed to the side surface of the gear block 46 facing the frame 51 on the left side in FIG. 9 and is disposed on the side of the drive shafts 47a to 47c parallel to the load / unload direction of the load W with respect to the lifter 50. .

  When the motor 45 is driven forward or backward, the gear mechanism of the gear block 46, the drive shaft 47a, the sprockets 56a to 56c, the lift chain 57, the drive shafts 47b and 47c, the sprockets 54a and 54b, and the lift chain 55 are moved. By sequentially rotating, each carriage 52 moves up and down, and the pallet Pa and the load W1 supported by the receiving portion 53 move up and down. P4 shown in FIG. 9 is a lower limit position of the receiving portion 53 that performs the engagement between the hand truck, the pallet Pa, and the load W1. P5 is the position of the receiving portion 53 that carries out the stacker crane 60, the pallet Pa, and the load W1. P 6 is the upper limit position of the receiving portion 53. The operation procedure of the lifter 50 and the loading / unloading procedure of the load W1 are the same as the operation procedure of the lifter 10 and the loading / unloading procedure of the load W described above.

  According to the above, the lifter 50 fixes the plate-like left and right frames 51 to the support columns 2 that form the installation space 4f provided in the rack of the automatic warehouse 100 by using the fixtures 12 and 13, and fixes the support columns. 2 and the frame 51 support each part of the pallet Pa, the load W1, and the lifter 50. For this reason, the frame 51 can be thinned and the width of the lifter 50 and the installation space 4f can be reduced. Further, it is not necessary to design and manufacture the frame 51 according to the width of the pallet Pa and the load W1 for each pallet Pa and the load W1 to be handled. Therefore, when the lifter 50 is installed in the installation space 4f in the rack of the automatic warehouse, it is possible to suppress the expansion of the frontage width of the rack, shorten the delivery time, and reduce the cost.

It is a figure which shows the structure of the automatic warehouse which concerns on embodiment of this invention. It is a figure which shows the operation part of the lifter which concerns on this embodiment of this invention. It is a figure which shows the external appearance of the automatic warehouse which concerns on embodiment of this invention. It is a figure which shows the external appearance of the automatic warehouse which concerns on embodiment of this invention. It is a figure which shows the structure of the lifter which concerns on embodiment of this invention. It is a figure which shows the structure of the lifter which concerns on embodiment of this invention. It is a figure which shows the structure of the lifter which concerns on embodiment of this invention. It is a figure which shows the structure of the lifter which concerns on embodiment of this invention. It is a figure which shows the structure of the lifter which concerns on other embodiment of this invention. It is a figure which shows the structure of the lifter which concerns on other embodiment of this invention. It is a figure which shows an example of the conventional automatic warehouse. It is a figure which shows an example of the conventional automatic warehouse. It is a figure which shows the structure of the conventional lifter.

Explanation of symbols

1 rack 2 support 10, 50 lifter 11, 51 frame 11a, 51a hole 12 bolt 13 plate nut 15 jack bolt 20, 52 carriage 22, 53 receiving portion 24a-24c, 54a, 54b sprocket 25, 55 lift chain 28, 45 Motor 29, 46 Gear block 30, 47a-47c Drive shaft 31, 49a-49c Pillow block 56a-56c Sprocket 57 Lift chain 100 Automatic warehouse Pa Pallet W, W1 Load

Claims (4)

A lifter installed in an automatic warehouse rack,
Plate-like left and right frames that are fixed to the rack columns so as to be opposed to each other by a fixing tool,
A carriage disposed on each frame and provided with a receiving portion for receiving the loaded load;
An elevating mechanism disposed on each frame and elevating each carriage up and down;
A drive source for generating a force for driving each of the lifting mechanisms;
A lifter comprising: a transmission mechanism that transmits a force generated from the driving source to each of the lifting mechanisms. The lifter according to claim 1, wherein
The transmission mechanism includes a drive shaft that is supported between the frame so as to be rotatably supported between the frames above the load received by the receiving portion.
The drive source is disposed on a side of the drive shaft,
The lifter according to claim 1, wherein the drive shaft is rotated by the force generated from the drive source to drive the lifting mechanisms. The lifter according to claim 1 or 2,
A plurality of holes are formed in the vicinity of the portion to be in close contact with the support of each frame so as to be aligned at a predetermined interval slightly wider than the width in the width direction of the support and aligned at a predetermined interval in the vertical direction.
As the fixture, use a shape that surrounds the periphery of the column other than the frame side,
By attaching the fixing tool to the frame through the holes arranged in the width direction of the support column, the support column is held between the fixing tool and the frame, and the frame is fixed in close contact with the support column. Lifter characterized by that. The lifter according to any one of claims 1 to 3,
A lifter characterized in that each frame is supported from below by means of a support whose vertical position can be adjusted.

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