JP2018118855A - Hoist and storage device with hoist - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact hoist designed such that raising/lowering stroke of a weight is shorter than raising/lowering stroke of a hoist stand.SOLUTION: After one end of a chain placed round a drive sprocket is placed round a pulley of a hoist stand, the one end is attached to an end bolt attached to a front upper part of an upper shelf frame. The other end of the chain placed round the drive sprocket is placed round a fixed pulley, a pulley attached to a weight, another fixed pulley, and another pulley attached to the weight, in that order, and the end of the chain is attached to an end bolt. Reduction means for reducing a stroke, which is formed from movable pulleys in such a manner, is provided for the hoist. Thereby, raising/lowering stroke of the weight can be shortened with respect to raising/lowering stroke of the hoist stand.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a lifting device that lifts and lowers a suspended lifting platform, and a storage device that includes the lifting device.

  2. Description of the Related Art Conventionally, a plate material storage shelf has been devised that includes a lifting device that lifts a lifting platform suspended by a chain. An example of such a device is a plate material loading / unloading shelf device disclosed in Patent Document 1.

  An elevating mechanism is provided on the upper surface of the shelf frame of the plate material carry-in / out shelf device. The lifting mechanism is composed of a reduction gear with a motor, two drive shafts, sprockets and chains. Sprockets are fixed to the left and right ends of the two drive shafts, respectively. The sprocket inside the drive shaft is connected to the sprocket fixed to the output shaft on both sides of the reduction gear with motor by an endless chain. Then, under the drive sprocket outside the drive shaft, rotatable sprockets are respectively provided on the columns of the shelf frame. Chains are stretched over the drive sprockets outside the drive shaft, and one of the chains is connected to the upper part of the lifting platform. The other chain spanned over the drive sprocket is spanned over the driven sprocket and then connected to the lower part of the lifting platform.

JP2013-177242A

  The plate material carry-in / out shelf apparatus according to Patent Document 1 has a structure that drives a drive sprocket provided on a drive shaft, winds up and lowers a chain spanned on the drive sprocket, and raises and lowers a lifting platform. Therefore, in order to take out the board | plate material loaded on the board | plate pallet currently stored in the shelf frame in a short time, there exists a problem that a motor capacity | capacitance will increase and cost will increase if the raising / lowering speed of a raising / lowering stand is made.

  Also, if the chain is passed over the drive sprocket, the upper part of the lifting platform is connected to one side of the chain, and the weight is connected to the other side of the chain spanned over the driving sprocket, the lifting speed of the lifting platform is not increased without increasing the motor capacity. Can be faster. In this case, since the lifting stroke of the lifting platform and the lifting stroke of the weight are the same, when the lifting platform is raised to the top floor of the shelf, the weight is lowered to near the floor. If a conveyor is installed at the bottom of the shelf frame, or if a laser beam machine is installed below the shelf frame, that is, a part of the laser beam machine enters the shelf frame, the conveyor or The problem of interference with the laser processing machine occurs.

  An object of the present invention is to solve the problems of the prior art as described above. Specifically, an object is to provide a compact lifting device in which the lifting stroke of the weight is shorter than the lifting stroke of the lifting platform.

  The invention according to claim 1 for solving the above-mentioned problems is a pulley, a drive source for rotationally driving the pulley, a suspension member suspended over the pulley, and the suspension suspended over the pulley. A weight suspended on one of the members, a lifting platform suspended on the other of the suspension members spanned on the pulley, and a reducing means for shortening the lifting stroke of the weight relative to the lifting stroke of the lifting platform; It is characterized by providing.

  According to a second aspect of the present invention, the pulley is a first pulley, and further includes a second pulley that rotates in synchronization with the first pulley, and a second suspension member that spans the second pulley. The weight is suspended from one of the second suspension members suspended from a pulley, and the lifting platform is suspended from the other of the second suspension member suspended from the second pulley. .

  The invention according to claim 3 is characterized in that the lifting platform includes a third pulley, and the lifting platform is suspended by the third pulley.

  The invention according to claim 4 is characterized in that the reducing means is constituted by a moving pulley, and the number of the moving pulleys that suspend the weight is larger than the number of the moving pulleys that suspend the lifting platform.

  The invention according to claim 5 is characterized by comprising a guide for guiding the lifting and lowering of the weight.

  The invention according to claim 6 is characterized in that each pulley is a sprocket or a pulley, and the suspension member is a chain or a toothed belt.

  According to a seventh aspect of the present invention, the lifting device is a first lifting means, a second lifting means is further provided, the weight is a first weight, the second lifting means is a second weight, and the second lifting means The means suspends the second weight and the lifting platform, and drives the second lifting means with the driving source of the first lifting means, or uses the driving source as the first driving source, and the second A second drive source for driving the elevating means is further provided.

  According to an eighth aspect of the present invention, the lifting device is provided on the frame, and the lifting platform is provided on one side of the frame so as to be movable up and down. The weights are configured to be movable up and down above the lowermost frame of the frame.

  According to the first aspect of the present invention, the lifting speed of the lifting platform can be increased without increasing the motor capacity by providing the weight. Moreover, the lifting / lowering stroke of the weight can be shortened with respect to the lifting / lowering stroke of the lifting platform by suspending the weight using the reducing means for reducing the lifting / lowering stroke of the weight. Therefore, even if the plate processing machine is installed on the floor so that a part of the plate processing machine enters the frame, it does not interfere with the plate processing machine when the weight is lowered.

  According to invention of Claim 2, the load concerning one suspension member can be reduced by increasing the number of suspension members which suspend a lifting platform.

  According to invention of Claim 3, the reduction ratio of the reduction gear which raises / lowers a lifting platform can be made into a half by suspending a lifting platform using a moving pulley. As a result, a general-purpose product and a small reduction gear can be used, so that the price can be reduced.

  According to the fourth aspect of the present invention, the reduction means is established by adjusting the number of movable pulleys between the weight and the lifting platform. Since it can be simply configured using general-purpose parts and the lifting stroke of the weight can be reduced, the cost can be reduced.

  According to the invention of claim 5, by providing the guide means, it is possible to reduce the vibration when the weight is raised and lowered.

  According to the invention of claim 6, the pulley is a sprocket or a pulley, and the suspension member is a chain or a toothed belt. Therefore, since it can be simply configured using general-purpose parts, the cost can be reduced.

  According to invention of Claim 7, since the both sides of a lifting platform are suspended by the raising / lowering means attached to the left and right, stable raising / lowering is attained.

  According to the eighth aspect of the present invention, since the weight moves up and down above the lowermost frame, the upper frame, the weight and the guide can be integrated with each other, so that the lifting device can be made compact. In addition, the frame can be easily divided in the vertical direction without being divided into weights and guides, and can be carried on a truck. Therefore, there is no restriction on the load during transportation.

It is the top view which showed notionally and schematically the storage apparatus provided with the raising / lowering apparatus which concerns on embodiment of this invention. It is the front view which showed the same as the above conceptually and schematically. (FIG. 2 is a view of FIG. 1 as seen from the direction of the white arrow) It is the side view which showed the same as above conceptually and schematically. (FIG. 3 is a view of FIG. 2 as seen from the direction of the white arrow) 1 is a cross-sectional view conceptually and schematically showing a lifting platform according to an embodiment of the present invention. It is the top view which showed notionally and schematically the storage apparatus provided with the drive source of the raising / lowering apparatus which concerns on embodiment of this invention on either side, respectively. It is the side view which showed typically the winding method of the chain of a raising / lowering apparatus, and arrangement | positioning of a sprocket. It is the side view which showed typically the winding method of the chain of a raising / lowering apparatus, and arrangement | positioning of a sprocket. It is the side view which showed typically the winding method of the chain of a raising / lowering apparatus, and arrangement | positioning of a sprocket. It is the side view which showed typically the winding method of the chain of a raising / lowering apparatus, and arrangement | positioning of a sprocket. It is the side view which showed typically the winding method of the chain of a raising / lowering apparatus, and arrangement | positioning of a sprocket.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. As an example of a storage device according to an embodiment of the present invention, a storage device 1 that includes a lifting platform that can be raised and lowered on a frame, places a pallet loaded with plate materials on the lifting platform, rises to each storage shelf, and stores the pallet. It is shown.

  The storage device 1 includes a storage shelf 25 that allows a material pallet 30 loaded with a plurality of plate materials P to be freely inserted and removed in the shelf frame 10 in the vertical direction. The shelf frame 10 includes a lower shelf frame 11 and an upper shelf frame 15. The upper beam member 12 of the lower shelf frame 11 and the lower beam member 16 of the upper shelf frame 15 are fixed by a plurality of screws and a plurality of nuts. If the shelf frame 10 can be divided in the vertical direction in this way, the shelf frame 10 can be divided into a lower shelf frame 11 and an upper shelf frame 15 and transported by loading on a truck during transportation. The size is no longer limited.

  The lower shelf frame 11 and the upper shelf frame 15 have an opening for taking in and out the material pallet 30 on the front surface. The front side of the shelf frame 10 is referred to as the front side where the lifting platform 35 moves up and down. The beam members 12 and 16 for connecting the lower shelf frame 11 and the upper shelf frame 15 are not provided on the front surface. The beam members 12 and 16 are provided on the side and back surfaces of the lower shelf frame 11 and the upper shelf frame 15. In order to store a plurality of material pallets 30 inside the lower shelf frame 11 and the upper shelf frame 15, a plurality of storage shelves 25 are provided symmetrically in the vertical direction. The material pallet 30 is stored in the storage shelf 25.

  Guide rails 21 and 22 for guiding the lifting platform 35 are attached to the left and right columns 20 provided at the front end of the lower shelf frame 11. Guide rails 21 and 22 for guiding the lifting platform 35 are also attached to the left and right columns 20 provided at the front end of the upper shelf frame 15. The lifting platform 35 is configured to be movable up and down along the column 20 on one side of the shelf frame 10, and includes a transfer mechanism 40 for taking the material pallet 30 into and out of the storage shelf 25.

  A plurality of plate materials P are stacked on the upper surface of the material pallet 30. The material pallet 30 includes a recess 31 on the front left and right plates, a recess 32 on the left and right rear plates, and a plurality of wheels 33 on the side surfaces. The wheels 33 are transferred by the transfer mechanism 40 as the wheels 33 roll.

  The lift table 35 is provided with two types of guide rollers for guiding the lift. In order to guide the same direction as the transfer direction of the material pallet 30, a plurality of guide rollers 36 that roll along the guide rails 21 provided on the front and rear surfaces of the left and right columns 20 are provided. In order to guide a direction orthogonal to the transfer direction of the material pallet 30, a plurality of guide rollers 37 that roll along the guide rails 22 provided outside the left and right columns 20 are also provided. A traveling surface 38 on which the wheel 33 rolls when the material pallet 30 is transferred by the transfer mechanism 40 is provided symmetrically inside the elevator platform 35.

A lifting device 60 is provided on the upper surface of the upper shelf frame 15. The elevating device 60 is mainly composed of a first drive unit 61 , first elevating means 75, and second elevating means 76. A first driving unit 61 is provided on the upper shelf frame 15. First elevating means 75 is provided on the right side of the upper shelf frame 15 (right side in FIG. 2), and second elevating means 76 is provided on the left side of the upper shelf frame 15 (left side in FIG. 2). The first lifting / lowering means 75 and the second lifting / lowering means 76 are arranged in a pair of left and right and symmetrically. The first elevating means 75 and the second elevating means 76 mainly guide each sprocket as a fixed pulley, each chain as a suspension member, each weight, each sprocket as a moving pulley provided in each weight, and the weight. The guide means 140 is configured.

The first drive unit 61 mainly includes a reduction gear 62 with a motor as a first drive source, two drive shafts 63, each sprocket, an endless chain, and each bearing. The motor-equipped speed reducer 62 is a driving source that exerts a driving force for moving the lifting platform 35 up and down. A speed reducer 62 with a motor is disposed on the front side of the upper surface of the upper shelf frame 15, and a drive shaft 63 is rotatably disposed on both sides thereof by a bearing 70. A pair of sprockets 67 are fixed to the inner ends of the two drive shafts 63. A drive sprocket 82 as a pair of fixed pulleys is fixed to the outer ends of the two drive shafts 63. The drive sprocket 82 is a single double sprocket that is configured so that two single-row chains as suspension members can be hung at the same time, and the first pulley and the second pulley rotate synchronously. A pair of sprockets 67 inside the drive shaft 63 (center side of the shelf frame) are connected to drive sprockets 68 fixed to the output shafts on both sides of the motor-equipped reducer 62 by endless chains 69, respectively.

  A first weight 131 for assisting the driving force of the drive source is provided in the first elevating means 75, and a second weight 132 is provided in the second elevating means 76, respectively. The first lifting means 75 and the second lifting means 76 are provided with reducing means for reducing the lifting stroke of the first weight 131 and the second weight 132 with respect to the lifting stroke of the lifting platform 35, respectively. The reduction means of the present embodiment is performed by adjusting the number of movable pulleys. Specifically, the number of moving pulleys provided on the weight side is increased from the number of moving pulleys provided on the lifting platform 35 to shorten the lifting stroke of the weights. Sprockets 101, 102, 103, and 104 are provided on the upper portions of the first weight 131 and the second weight 132 to function as a moving pulley when the weights are raised and lowered. The first weight 131 and the second weight 132 move up and down in the opposite direction to the lifting and lowering of the lifting platform 35.

  The reduction means may be the following method. A drive sprocket is fixed to a pair of drive shafts 63 provided above the pillars 20 of the upper shelf frame 15 instead of the drive sprockets 82, and a pair of driven sprockets are provided below the pillars 20 of the lower shelf frame 11. One end of the chain spanned over the drive sprocket is connected to the upper part of the lifting platform 35, and the other chain spanned over the pair of drive sprockets spans a pair of driven sprockets in a U-shape. Each is connected to the lower part of the lifting platform 35. A drive shaft is rotatably disposed at the upper center of the upper shelf frame 15 and a pair of drive sprockets are fixed to both ends of the drive shaft. The drive sprocket provided on the drive shaft 63 and the drive sprocket provided on the drive shaft in the upper center of the upper shelf frame 15 are the same sprocket. A pair of driven sprockets are provided below the drive sprocket and below the upper shelf frame 15. Further, a pair of driven sprockets are provided on the upper front side of the upper shelf frame 15 and on the lower front side of the upper shelf frame 15, respectively. A pair of chains are hung on a pair of drive sprockets provided on the drive shaft of the upper shelf frame 15, one end suspends a weight, and the other of the chains spanned on the pair of drive sprockets is the upper shelf frame 15. A pair of sprockets on the upper front side, a pair of sprockets on the lower front side of the upper shelf frame 15, and a driven sprocket on the lower portion of the upper shelf frame 15 are spanned in this order, and the chain end is connected to the lower part of the weight. Then, sprockets are fixed to the pair of drive shafts 63, and two sprockets are fixed to the drive shaft at the upper center of the upper shelf frame 15. An endless chain is spanned between the sprocket of the pair of drive shafts 63 and the sprocket of the drive shaft at the upper center of the upper shelf frame 15. The number of sprocket teeth provided on the drive shaft at the upper center of the upper shelf frame 15 is increased from the number of sprocket teeth provided on the drive shaft 63, and the weight lifting stroke is increased with respect to the lifting stroke of the lifting platform 35. shorten.

  Sprockets 85 and 86 serving as third pulleys that function as a moving pulley when the elevator 35 is moved up and down are rotatably disposed above both ends of the elevator table 35 and in the vicinity of the column 20. A total of four sprockets 85, 86 provided on each side of the lifting platform 35 are referred to as an inner sprocket 85 and an outer sprocket 86 as a sprocket 86. Two end bolts 121 and 122 are attached to the front upper portions of the left and right pillars 20 of the upper shelf frame 15 by brackets (not shown) with the connecting portions of the chains facing downward. Of the four end bolts provided on the left and right columns 20 of the upper shelf frame 15, the inner end bolt is referred to as an end bolt 121, and the outer end bolt is referred to as an end bolt 122.

  A pair of left and right drive sprockets 82 fixed to the drive shaft 63 are disposed above the pillars 20 of the upper shelf frame 15. A pair of left and right fixed pulley-like sprockets 88 are rotatably disposed on both sides of the upper front frame 15 on the upper front side. On the rear side of the sprocket 88, a pair of left and right constant pulley-like sprockets 91 and a pair of left and right constant pulley-like sprockets 93 are disposed. On the rear side of the sprocket 93, a pair of left and right end bolts 123 for fixing the end of the chain are provided with the connecting portion of the chain facing downward. A pair of left and right fixed pulley-like sprockets 98 are rotatably disposed on both sides of the upper rear frame 15 on the upper rear side. A pair of left and right constant pulley-like sprockets 96 are disposed on the lower front side of the sprocket 98. On the front side of the sprocket 96, a pair of left and right end bolts 124 for fixing the end of the chain are provided with the connecting portion of the chain facing downward.

  A pair of left and right chains 111 and 112 are stretched around a drive sprocket 82 (single double sprocket) on a pair of left and right outer sides (side surfaces of the shelf frame) of the drive shaft 63. One of the chains 111 spanned inside the drive sprocket 82 extends toward the lifting platform 35 side. The chain 111 spans a pair of left and right third sprockets 85 provided on the lifting platform 35 in a U shape, and the end of the chain 111 is attached to an end bolt 121 provided on the upper shelf frame 15. . The other side of the chain 111 spanned inside the drive sprocket 82 is the lower part of the sprocket 88 provided on both sides near the upper front side of the upper shelf frame 15, the upper part of the sprocket 91, each weight (first weight 131 and second weight 132. ) And a sprocket 102 provided on the top of each sprocket 93 and on each weight. The end of the chain 111 is an end provided on the upper shelf frame 15. It is attached to the bolt 123.

  One of the chains 112 hung outside the drive sprocket 82 extends to the lifting platform 35 side. The chain 112 is hung around a pair of left and right sprockets 86 provided on the lifting platform 35, and the end of the chain 112 is attached to an end bolt 122 provided on the upper shelf frame 15. The other side of the chain 112 hung outside the drive sprocket 82 is hung in a U-shape on the upper side of a pair of left and right sprockets 98 on both sides of the upper rear side of the upper shelf frame 15 and on the sprocket 104 provided on each weight. Furthermore, the sprocket 96 is hung around the sprocket 103 provided on each weight and the upper part of the sprocket 96, and the end of the chain 112 is attached to an end bolt 124 provided on the upper shelf frame 15.

  When the motor-equipped speed reducer 62 is rotationally driven, the chain 111 and the chain 112 spanned on the drive sprocket 82 are wound up or down, and the lifting platform 35 moves up and down. When the motor-equipped speed reducer 62 is driven to rotate in the forward direction, the lifting platform 35 rises along the guide rails 21 and 22 provided on the pillar 20, and the first weight 131 and the second weight 132 descend. Further, when the motor-equipped speed reducer 62 is driven in reverse rotation, the lifting platform 35 is lowered along the guide rails 21 and 22 provided on the pillar 20, and the first weight 131 and the second weight 132 are raised. The movable pulley-like pulley and the fixed pulley-like pulley used a rotatable sprocket, but a pulley may be used. Further, although a chain is used as the hanging member, a toothed belt may be used.

  The motor-equipped reduction gear 62, that is, the drive source is provided with the first weight 131 and the second weight 132 that assist the drive force, and the motor capacity is reduced by reducing the motor capacity when the lifting speed of the lifting platform 35 is not changed. The price of can be reduced. When the motor capacity is not changed, the elevating speed of the elevating platform 35 can be increased and the lead time can be shortened.

  A conveyor may be provided below the shelf frame 10, or a laser processing machine may be provided below the shelf frame 10, that is, so that a part of the laser processing machine enters the shelf frame 10 on the floor. In the present invention, the first weight 131 and the second weight 132 are provided with moving pulleys, and the number of the moving pulleys is adjusted so that the lifting stroke of the first weight 131 and the second weight 132 can be shorter than the lifting stroke of the lifting platform 35. Therefore, when the 1st weight 131 and the 2nd weight 132 descend | fall, it does not interfere with a conveyor or a laser processing machine.

  Guide means 140 that guides the raising and lowering of the first weight 131 and the second weight 132 and restricts the horizontal movement of the first weight 131 and the second weight 132 is provided on both sides of the first weight 131 and the second weight 132, respectively. Provide. Brackets 143 are respectively provided on the upper and lower portions of the upper shelf frame 15 on both sides where the first weight 131 and the second weight 132 are moved up and down. The linear guide bar 142 in which the linear guide 141 is incorporated is attached to the upper and lower brackets 143, and the linear guide 141 is attached to both ends of the first weight 131 and the second weight 132, respectively. The guide means 140 is provided on each side surface of the upper shelf frame 15. The guide means 140 can reduce vibration and noise when the first weight 131 and the second weight 132 are moved up and down. The guide means 140 may be the following method. A plurality of rollers may be attached to the side surface of the weight, a U-shaped frame may be provided on both sides of the weight, and guide means configured so that the roller moves up and down in the U-shaped frame may be used.

  In the transfer mechanism 40, so-called chain conveyors are arranged symmetrically on the inner side of the lifting platform 35 in parallel with the transfer direction of the material pallet 30. The transfer mechanism 40 has a drive sprocket 49, a plurality of driven sprockets 50, a tension sprocket 51, and an endless chain 46, respectively, symmetrically. An endless chain 46 is spanned between the drive sprocket 49, the plurality of driven sprockets 50, and the tension sprocket 51. A projection plate 47 and a projection plate 48 are provided on the endless chain 46. The left and right drive sprockets 49 are fixed to the drive shaft 52, and the drive shaft 52 is rotatably fixed to the side plates on both sides of the lifting platform 35 (see FIG. 4). A sprocket 53 is fixed to the drive shaft 52. The driven sprocket 50 is rotatably fixed to the side plate of the lifting platform 35. A servo motor 56 is disposed in the vicinity of the drive shaft 52 and on the lifting platform 35. An endless chain 55 is stretched between the sprocket 54 fixed to the output shaft of the servo motor 56 and the sprocket 53.

  When the lifting platform 35 stops the storage shelf 25 in which the material pallet 30 of the shelf frame 10 is stored and the traveling surface 38 provided on the lifting platform 35 so that the material pallet 30 can be transferred, the transfer mechanism 40, the wheel 33 of the material pallet 30 rolls between the storage shelf 25 and the running surface 38 so that the material pallet 30 can be taken in and out (transferred).

  A gap is provided between the endless chain 46 of the chain conveyor of the transfer mechanism 40 and the plate on which the concave portions of the material pallet 30 are provided. Thereby, the endless chain 46 and the driven sprocket 50 do not interfere with the plate provided on the material pallet 30 when the elevating platform 35 is moved up and down. The projecting plate 47 and the projecting plate 48 provided on the side surface of the endless chain 46 have a positional relationship such that when the endless chain 46 operates, the projecting plate 47 and the projecting plate 48 fit into the recesses 31 and 32 of the plate of the material pallet 30.

  Next, a procedure for transferring the material pallet 30 to the lifting platform 35 by the transfer mechanism 40 will be described. First, the lift 35 moves to the storage shelf 25 in which the material pallet 30 is stored. When the servo motor 56 is driven to rotate, the endless chain 46 is driven, and the protruding plate 47 fits into the recesses 31 provided on the left and right front plates of the material pallet 30 stored in the storage shelf 25 of the shelf frame 10. Next, the material pallet 30 is pulled out, and the protruding plate 48 fits into the recesses 32 provided in the left and right plates of the rear part of the material pallet 30. Further, the material pallet 30 is pulled out and transferred to the lifting platform 35. In this way, the material pallet 30 is transferred by rotationally driving the servo motor 56. Further, when the servo motor 56 is driven in reverse rotation, the material pallet 30 can be transferred in the reverse direction and returned to the original storage shelf 25.

  When the lifting platform 35 moves, the projection plate 47 and the projection plate 48 are in a retracted position, and the endless chain 46, the projection plate 47 and the projection plate 48 of the transfer mechanism 40 are plates provided with the material pallet 30 and the recess 31. So that they do not interfere with each other.

  The procedure for loading and storing the plate material P on the material pallet 30 will be described with reference to FIG. When the plate material P loaded on the material pallet 30 becomes empty, the lift 35 moves to the storage shelf 25 in which the empty material pallet 30 is stored. Then, the transfer mechanism 40 transfers the empty material pallet 30 from the position where the material pallet 30 is stored in the shelf frame 10 to the loading position of the plate material P of the lifting table 35, and the lifting table 35 moves to a height at which the plate material P is loaded. . At this position, the plate material P is loaded on the material pallet 30 by a forklift (not shown). The elevator 35 moves to the storage shelf 25 in which the empty material pallet 30 is stored, and the transfer mechanism 40 transfers the material pallet 30 to the storage position of the shelf frame 10 for storage.

  The work of loading the plate material P onto the material pallet 30 by a forklift or a crane (not shown) can be performed from any one of three directions other than the direction in which the lifting platform 35 is in contact with the shelf frame 10. The operation of taking out the plate material P loaded on the material pallet 30 can be performed in a similar manner.

  Next, a lifting device 60 in which a pair of drive shafts 161 is provided above the left and right columns 20 of the upper shelf frame 15 and drive sources are separately provided on the drive shafts 161 will be described with reference to FIG.

  A lifting device 60 is provided at the upper part of the upper shelf frame 15. The elevating device 60 is mainly composed of a pair of first driving unit 145 and first elevating means 75, second driving unit 146 and second elevating means 76. A first drive unit 145 and first elevating means 75 are provided on the right side of the upper shelf frame 15, and a second drive unit 146 and second elevating means 76 are provided on the left side of the upper shelf frame 15. The first driving unit 145 and the first lifting / lowering means 75 and the second driving unit 146 and the second lifting / lowering means 76 are arranged in a pair of left and right and symmetrically. The first drive unit 145 mainly includes a drive shaft 161, a bearing 162, and a hollow shaft speed reducer 155 with a servo motor as a first drive source. The second drive unit 146 mainly includes a drive shaft 161, a bearing 162, and a hollow shaft speed reducer 156 with a servo motor as a second drive source.

A plate 151 and a plate 152 are respectively attached to the upper portions of the pillars 20 on the left and right of the upper shelf frame 15 so as to sandwich the pillars 20 vertically. The plate 151 is attached to the outside of the left and right columns 20 (attachment surface of the guide rail 22). The plate 152 is attached inside the left and right pillars 20. Holes are made in the plate 151 and the plate 152, and the bearings 162 are respectively attached to the holes. A drive shaft 161 is rotatably mounted on the bearing 162. The pair of drive shafts 161 is disposed above the upper end of the column 20. A drive sprocket 82 is fixed to each of the pair of drive shafts 161. A hollow shaft reducer 155 with a servo motor as a first drive source and a hollow shaft reducer 156 with a servo motor as a second drive source are attached to the shaft ends of the pair of drive shafts 161 on the plate 151 side, respectively. Yes. The pair of drive shafts 161 and the hollow shafts of the hollow shaft speed reducers 155 and 156 with servo motors are fixed. Plates 157 are attached to the hollow shaft speed reducers 155 and 156 with servo motors, respectively. A support 158 is attached to the plate 157, and the other end of the support 158 is fixed to the plate 151 so that the hollow shaft speed reducers 155 and 156 with servo motors do not rotate.

When the left and right hollow shaft speed reducers 155 and 156 are driven to rotate synchronously, the left and right drive sprockets 82 are rotated, and the left and right chains 111 and 112 are wound at the same speed in the same direction. Then, the lifting platform 35 rises along the guide rails 21 and 22 provided on the pillar 20, and the first weight 131 and the second weight 132 descend. Further, when the hollow shaft speed reducers 155 and 156 with servo motors are driven synchronously and reversely, the lifting platform 35 is lowered along the guide rails 21 and 22 provided on the pillar 20, and the first weight 131 and the second weight 132 are raised. .

  Thus, when the drive source is divided from one to two, a servo motor having a small motor capacity can be used. And a frame number can also be made small and a highly versatile reduction gear can be used. In addition, since the drive shaft 161 can be shortened, the lifting device 60 can be easily assembled.

Instead of the hollow shaft reducers 155 and 156 with a servomotor, a reducer with a servomotor (not shown) may be used, and the drive shaft 161 and the output shaft of the reducer with a servomotor may be connected by a coupling. Then, a reduction gear with a servo motor may be attached to the bracket, and the bracket may be fixed to the plate 151.

The 1st raising / lowering means 75 which concerns on embodiment of this invention is demonstrated with reference to FIGS. The elevating device 60 of each embodiment includes a first drive unit 61 , first elevating means 75, and second elevating means 76. As shown in the front view of FIG. 2, the first elevating means 75 is provided on the right side of the upper shelf frame 15, and the second elevating means 76 is provided on the left side of the upper shelf frame 15. The first lifting / lowering means 75 and the second lifting / lowering means 76 are arranged in a pair of left and right and symmetrically.

  A first weight 131 for assisting the driving force of the drive source is provided on the right side surface (the right side in FIG. 2) of the upper shelf frame 15, and a second weight 132 is provided on the left side surface (the left side in FIG. 2) of the upper shelf frame 15. Further, guide means 140 for guiding the first weight 131 and guide means 140 for guiding the second weight 132 are provided on the left and right side surfaces of the upper shelf frame 15, respectively.

  FIG. 6 is a side view schematically showing the configuration of the first elevating means 75. A drive sprocket 82 is fixed to the drive shaft 63 so that the first sprocket as the first pulley and the second sprocket as the second pulley rotate synchronously. The drive sprocket 82 as a fixed pulley is a single double sprocket. One of the chains 111 spanned on the first sprocket inside the drive sprocket 82 is spanned in a U-shape on a sprocket 85 as a third pulley of a moving pulley provided on the lifting platform 35, and the end of the chain 111 is It is attached to an end bolt 121 provided at the upper part of the upper shelf frame 15. The other side of the chain 111 spanned by the first sprocket inside the drive sprocket 82 is the lower part of the sprocket 88 as a fixed pulley provided near the upper front of the upper shelf frame 15, and the sprocket as a fixed pulley provided in the vicinity thereof. 91, and over a sprocket 101 as a moving pulley provided in the first weight 131 in a U-shape, and further, an upper portion of a sprocket 93 as a fixed pulley provided near the upper center of the upper shelf frame 15, A sprocket 102 as a moving pulley provided on one weight 131 is hung in a U shape, and an end of the chain 111 is attached to an end bolt 123 provided near the upper center of the upper shelf frame 15.

  One of the chains 112 spanned on the second sprocket outside the drive sprocket 82 is spanned in a U-shape on a sprocket 86 as a moving pulley-like third pulley provided on the lifting platform 35, and the end of the chain 112 is It is attached to an end bolt 122 provided at the upper part of the upper shelf frame 15. The other side of the chain 112 spanned by the second sprocket outside the drive sprocket 82 is the upper part of the sprocket 98 as a fixed pulley on the upper rear side of the upper shelf frame 15, and a moving pulley provided on the first weight 131. A U-shape is passed over the sprocket 104, and a U-shape is formed on the upper portion of the sprocket 96 as a fixed pulley provided near the upper center of the upper shelf frame 15 and on the sprocket 103 as a moving pulley provided on the first weight 131. The end of the chain 112 is attached to an end bolt 124 provided near the upper center of the upper shelf frame 15. By suspending the lifting platform 35 using a moving pulley, the reduction ratio of the reduction gear that lifts the lifting platform 35 can be halved. Thereby, the price reduction of a reduction gear can be aimed at.

  FIG. 7 is a side view schematically showing the configuration of the first elevating means 75. A drive sprocket 81 as a first pulley is fixed to the drive shaft 63. One of the chains 111 spanned on the drive sprocket 81 as a fixed pulley is stretched in a U-shape on the sprocket 85 as a movable pulley-like third pulley of the lifting platform 35, and the end of the chain 111 is at the upper stage It is attached to an end bolt 121 provided at the upper part of the shelf frame 15.

  The other spanned over the drive sprocket 81 is a lower portion of a sprocket 88 as a fixed pulley provided near the upper front of the upper shelf frame 15, an upper portion of a sprocket 91 as a fixed pulley provided in the vicinity thereof, and a first weight. A sprocket 101 as a moving pulley provided in 131 is U-shaped, and a sprocket 93 as a fixed pulley provided near the upper center of the upper shelf frame 15, an upper portion of a sprocket 96 as a fixed pulley, and a first weight The end of the chain 111 is attached to an end bolt 123 provided near the upper back side of the upper shelf frame 15.

  FIG. 8 is a side view schematically showing the configuration of the first elevating means 75. A drive sprocket 82 is fixed to the drive shaft 63 so that the first sprocket as the first pulley and the second sprocket as the second pulley rotate synchronously. The drive sprocket 82 as a fixed pulley is a single double sprocket. An endless chain 113 is hung around a first sprocket inside a drive sprocket 82 as a first pulley. An endless chain 113 spanned over a drive sprocket 82 as a fixed pulley is a lower part of a sprocket 88 as a fixed pulley provided near the upper front of the upper shelf frame 15 and an upper part of a sprocket 91 as a fixed pulley provided in the vicinity thereof. A sprocket 101 as a moving pulley provided on the first weight 131 is passed in a U-shape, and a sprocket 93 as a fixed pulley provided near the upper center of the upper shelf frame 15 and a sprocket 96 as a fixed pulley. Furthermore, it is hung on a sprocket 102 as a moving pulley provided on the first weight 131 in a U-shape, hung on a sprocket 98 as a fixed pulley on the upper rear side of the upper shelf frame 15, and is used as a fourth pulley. After being sprinkled over the sprocket 87, the sprocket as a third pulley of a moving pulley provided on the lifting platform 35 Doo 85 passes over the U-shape, and passes over again to the drive sprocket 82. The fourth pulley is a fixed pulley in which two pulleys are integrated so that the rotation centers of the two pulleys are on the same axis and rotate synchronously. In the present embodiment, a single double sprocket is used as the sprocket 87 as the fourth pulley. The sprocket 87 is disposed obliquely above the drive sprocket 82 in the vicinity of the upper front portion of the upper shelf frame 15.

  The drive sprocket 82 and the sprocket 87 are single double sprockets having a shape in which two single-row chains can be hung at the same time. An endless chain 114 is stretched between the second sprocket outside the drive sprocket 82 and the sprocket 87. The mounting pitch between the drive sprocket 82 and the sprocket 87 is arranged so that the endless chain 114 is moderately stretched. The drive sprocket 82 and the sprocket 87 have the same number of teeth, and when the drive sprocket 82 is driven to rotate, the sprocket 87 rotates in the same direction as the drive sprocket 82 and rotates at the same rotation speed. When the drive sprocket 82 is rotationally driven, the endless chain 113 spanned over the drive sprocket 82 and the endless chain 113 spanned over the sprocket 87 are wound up or down, and the lifting platform 35 moves up and down.

  As shown in FIGS. 6 to 8, when the number of the moving pulleys provided on the first weight 131 is doubled relative to the number of the moving pulleys provided on the lifting platform 35, The lifting stroke can be halved.

  FIG. 9 is a side view schematically showing the configuration of the first elevating means 75. A drive sprocket 81 as a first pulley is fixed to the drive shaft 63. One of the chains 111 spanned on a drive sprocket 81 as a fixed pulley is attached to an end bolt 125 provided on the lifting platform 35. The other side of the chain 111 spanned over the drive sprocket 81 is a lower part of a sprocket 88 as a fixed pulley provided near the upper front of the upper shelf frame 15, an upper part of a sprocket 91 as a fixed pulley provided in the vicinity thereof, and The sprocket 101 provided as the moving pulley provided on the first weight 131 and the sprocket 102 provided as the moving pulley provided on the first weight 131 are stretched in a U shape, and the end of the chain 111 is located at the upper back of the upper shelf frame 15. It is attached to an end bolt 123 provided near the side. The lifting platform 35 and the first weight 131 are looped around the drive sprocket 81 by the chain 111.

  As shown in FIG. 9, when the lifting platform 35 is directly suspended by the chain 111 spanning the drive sprocket 81 and a moving pulley is provided on the first weight 131, the first weight 131 of the lifting platform 35 can be lifted. The lifting stroke can be halved.

  FIG. 10 is a side view schematically showing the configuration of the first elevating means 75. A drive sprocket 82 is fixed to the drive shaft 63 so that the first sprocket as the first pulley and the second sprocket as the second pulley rotate synchronously. The drive sprocket 82 as a fixed pulley is a single double sprocket. The chain 111 is looped over the first sprocket inside the drive sprocket 82 as the first pulley. One of the chains 111 spanned on the drive sprocket 82 as a fixed pulley is attached to an end bolt 125 provided on the lifting platform 35. The other side of the chain 111 spanned by the first sprocket inside the drive sprocket 82 as a fixed pulley is the lower part of the sprocket 88 as a fixed pulley provided near the upper front of the upper shelf frame 15, and the fixed The upper part of the sprocket 91 as a pulley and the sprocket 101 as a moving pulley provided in the first weight 131 are passed in a U shape, and the end of the chain 111 is provided near the upper center of the upper shelf frame 15. It is attached to the end bolt 123.

  In the vicinity of the upper front portion of the upper shelf frame 15, one of the chains 112 spanned on a sprocket 87 as a fourth pulley disposed obliquely above the drive sprocket 82 is attached to an end bolt 126 provided on the lifting platform 35. It has been. The fourth pulley is a fixed pulley in which two pulleys are integrated so that the rotation centers of the two pulleys are on the same axis and rotate synchronously. In the present embodiment, a single double sprocket is used as the sprocket 87 as the fourth pulley. The other side of the chain 112 spanned over the sprocket 87 is U-shaped on the upper part of the sprocket 98 as a fixed pulley on the upper rear side of the upper shelf frame 15 and on the sprocket 102 as a moving pulley provided on the first weight 131. Further, the end of the chain 112 is attached to an end bolt 124 provided near the upper center of the upper shelf frame 15.

Single Double Sprocket The drive sprocket 82 and the sprocket 87 are single double sprockets having a shape in which two single-row chains can be hooked simultaneously. An endless chain 114 is stretched between the second sprocket outside the drive sprocket 82 and the sprocket 87. The mounting pitch between the drive sprocket 82 and the sprocket 87 is arranged so that the endless chain 114 is moderately stretched. The drive sprocket 82 and the sprocket 87 have the same number of teeth, and when the drive sprocket 82 is driven to rotate, the sprocket 87 rotates in the same direction as the drive sprocket 82 and rotates at the same rotation speed. When the drive sprocket 82 is rotationally driven, the chain 111 spanned over the drive sprocket 82 and the chain 112 spanned over the sprocket 87 are wound up or down, and the lifting platform 35 moves up and down.

  Thus, by suspending the first weight 131 using the movable pulley, the lifting stroke of the first weight 131 can be halved with respect to the lifting stroke of the lifting platform 35. By allowing the first weight 131 to move up and down between the beam material (not shown) on the upper shelf frame 15 and the beam material 16, the upper shelf frame 15, each weight, and the guide means 140 are integrated. As a result, the lifting device becomes compact. Since the first weight 131 does not move up and down the lower shelf frame 11 installed on the floor, that is, the side of the lowermost frame, a part of the plate material processing machine is placed below the shelf frame 10 in the shelf frame. A plate material processing machine can be installed so as to enter inside.

  The number of lifts 35 and the number of movable pulleys provided on each weight is not limited to the number used in the present invention as long as the effect of shortening the lift stroke of each weight can be obtained compared to the lift stroke of the lift 35. . In the embodiment of the present invention, the chain has been described using a single row chain and a single row sprocket, but a multi-row chain and a multi-row sprocket may be used. Moreover, you may use a wire rope for the suspension member used for a pulley. The present invention can also be easily applied to a conveyance system that automatically conveys a plate material to a plate material processing machine. Further, the present invention can be easily applied to a three-dimensional warehouse that transports a conveyed product on a lifting platform to a shelf and stores the conveyed product on the shelf.

  As mentioned above, although the storage device 1 provided with the raising / lowering device 60 of this invention was shown and demonstrated a preferable Example, this invention is not limited only to the Example mentioned above, Various in the range of this invention. It goes without saying that combinations and / or various modifications can be made.

DESCRIPTION OF SYMBOLS 1 Storage apparatus 10 Shelf frame 11 Lower shelf frame 15 Upper shelf frame 25 Storage shelf 30 Material pallet 35 Lifting platform 40 Transfer mechanism 60 Lifting device 75 First lifting means 76 Second lifting means 131 First weight 132 Second weight 140 Guide means

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that an elevator base is provided on one side of a shelf frame that includes a plurality of storage shelves in which the pallet on which articles are placed can enter and exit in a vertical direction. , a storage apparatus having a transfer mechanism for loading and unloading the pallet with respect to the storage rack to the lifting platform, a driving pulley, a drive source for rotationally driving the driving pulley, subjected to the driving pulley A suspension member that is handed over, a weight that is suspended on one of the suspension members that is suspended on the driving pulley, and a lifting stroke of the lifting platform that is suspended on the other of the suspension member . comprises a lifting device comprising a reduction means to reduce the lifting stroke, provided with respective left and right both sides of the weight to one side of said shelf frame the lifting platform is provided The weight of the left and right both sides is characterized in that the lifting along sides of the lifting frame.

The invention according to claim 2 is characterized in that the number of weight pulleys provided on the weights as moving pulleys is increased with respect to the number of lifting pulleys provided on the elevator as the moving means .

According to a third aspect of the present invention, the lifting device spans the plurality of suspension members over the driving pulley, and at least one of the plurality of suspension members is viewed from above. The weight is suspended from a weight pulley provided as a moving pulley at one end of the weight having a substantially rectangular shape, and at least one of the plurality of suspension members is viewed from above. Then, the weight is suspended from a weight pulley provided as a moving pulley on the other end of the weight having a substantially rectangular shape, and the other of the plurality of suspension members is directly connected to the elevator and the elevator It is hung, or it is hung on the lifting platform pulley as a moving pulley provided on the lifting platform, and the lifting platform is suspended .

Fourth aspect of the present invention, the driving source of the lifting device is characterized that you are disposed spaced apart on top of the shelf frame.

According to the invention of claim 2, the reducing means is established by adjusting the number of the movable pulleys of the weight and the lifting platform. Since it can be simply configured using general-purpose parts and the lifting stroke of the weight can be reduced, the cost can be reduced .

According to invention of Claim 3 , the load concerning one suspension member can be reduced by increasing the number of suspension members which suspend a lifting platform .

According to the invention of claim 4, when the drive source is divided from one to two, a motor having a small motor capacity can be used. And a frame number can also be made small and a highly versatile reduction gear can be used. Further, since the drive shaft can be shortened, the lifting device can be easily assembled .

  A plate 151 and a plate 152 are respectively attached to the upper portions of the pillars 20 on the left and right of the upper shelf frame 15 so as to sandwich the pillars 20 vertically. The plate 151 is attached to the outside of the left and right columns 20 (attachment surface of the guide rail 22). The plate 152 is attached inside the left and right pillars 20. Holes are made in the plate 151 and the plate 152, and the bearings 162 are respectively attached to the holes. A drive shaft 161 is rotatably mounted on the bearing 162. The pair of drive shafts 161 is disposed above the upper end of the column 20. A drive sprocket 82 is fixed to each of the pair of drive shafts 161. A hollow shaft reducer 155 with a servo motor as a first drive source and a hollow shaft reducer 156 with a servo motor as a second drive source are attached to the shaft ends of the pair of drive shafts 161 on the plate 151 side, respectively. Yes. The pair of drive shafts 161 and the hollow shafts of the hollow shaft speed reducers 155 and 156 with servo motors are fixed. Plates 157 are attached to the hollow shaft speed reducers 155 and 156 with servo motors, respectively. A support 158 is attached to the plate 157, and the other end of the support 158 is fixed to the plate 151 so that the hollow shaft speed reducers 155 and 156 with servo motors do not rotate.

  When the left and right hollow shaft speed reducers 155 and 156 are driven to rotate synchronously, the left and right drive sprockets 82 are rotated, and the left and right chains 111 and 112 are wound at the same speed in the same direction. Then, the lifting platform 35 rises along the guide rails 21 and 22 provided on the pillar 20, and the first weight 131 and the second weight 132 descend. Further, when the hollow shaft speed reducers 155 and 156 with servo motors are driven synchronously and reversely, the lifting platform 35 is lowered along the guide rails 21 and 22 provided on the pillar 20, and the first weight 131 and the second weight 132 are raised. .

  Instead of the hollow shaft reducers 155 and 156 with a servomotor, a reducer with a servomotor (not shown) may be used, and the drive shaft 161 and the output shaft of the reducer with a servomotor may be connected by a coupling. Then, a reduction gear with a servo motor may be attached to the bracket, and the bracket may be fixed to the plate 151.

  The 1st raising / lowering means 75 which concerns on embodiment of this invention is demonstrated with reference to FIGS. The elevating device 60 of each embodiment includes a first drive unit 61, first elevating means 75, and second elevating means 76. As shown in the front view of FIG. 2, the first elevating means 75 is provided on the right side of the upper shelf frame 15, and the second elevating means 76 is provided on the left side of the upper shelf frame 15. The first lifting / lowering means 75 and the second lifting / lowering means 76 are arranged in a pair of left and right and symmetrically.

The dynamic sprocket 82 and the sprocket 87 driving a single double sprockets in the form which is multiplied by the single row chain to two simultaneous. An endless chain 114 is stretched between the second sprocket outside the drive sprocket 82 and the sprocket 87. The mounting pitch between the drive sprocket 82 and the sprocket 87 is arranged so that the endless chain 114 is moderately stretched. The drive sprocket 82 and the sprocket 87 have the same number of teeth, and when the drive sprocket 82 is driven to rotate, the sprocket 87 rotates in the same direction as the drive sprocket 82 and rotates at the same rotation speed. When the drive sprocket 82 is rotationally driven, the chain 111 spanned over the drive sprocket 82 and the chain 112 spanned over the sprocket 87 are wound up or down, and the lifting platform 35 moves up and down.

Claims (8)

A pulley,
A drive source for rotationally driving the pulley;
A suspension member spanned over the pulley;
A weight suspended on one of the suspension members spanned on the pulley;
A lifting platform suspended on the other of the suspension members spanned over the pulley;
A lifting device comprising: a reducing means for shortening the lifting stroke of the weight with respect to the lifting stroke of the lifting platform. The pulley is the first pulley,
A second pulley that rotates synchronously with the first pulley;
A second suspension member spanned over the second pulley,
Suspending the weight on one of the second suspension members spanned on the second pulley,
The lifting device according to claim 1, wherein the lifting platform is suspended from the other of the second suspension members that are stretched over the second pulley. A third pulley is provided on the lifting platform,
The elevating apparatus according to claim 1 or 2, wherein the elevating platform is suspended by the third pulley. The reducing means is constituted by a moving pulley,
The lifting device according to any one of claims 1 to 3, wherein the number of the movable pulleys that suspend the weight is greater than the number of the movable pulleys that suspend the lifting platform.   The lifting device according to claim 1, further comprising a guide for guiding the lifting of the weight.   The lifting device according to any one of claims 1 to 5, wherein each pulley is a sprocket or a pulley, and the suspension member is a chain or a toothed belt. The lifting device according to any one of claims 1 to 6 is a first lifting means,
A second elevating means;
The weight is the first weight,
The second lifting means comprises a second weight;
The second lifting means suspends the second weight and the lifting platform;
The second raising / lowering means is also driven by the driving source of the first raising / lowering means, or a second driving source for driving the second raising / lowering means is further provided. Elevating device characterized. While providing the raising / lowering device of any one of Claims 1-7 in a flame | frame,
The elevator is provided on one side of the frame so as to be movable up and down,
The frame is configured to be splittable in the vertical direction, and the storage device is configured to allow the weights to move up and down above the lowermost frame of the frame to be split.

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