JP3046163U - Goods storage shelves - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reduce the cost of goods storage shelves by changing the rack part to a simple structure without impairing the pallet transfer function. SOLUTION: An elongated rack base 1 using a bogie type pallet having a total of four wheels in front, rear, left and right, one end of which is set as a cargo entrance / exit end 102 and the other end is set as a rear end 103.
The rack unit 110 is constructed by laying a pair of rails 111 that support the pallet 141 so that the pallet 141 can travel along both sides of the 00 and along the longitudinal direction thereof, and a pallet transport mechanism is installed between the pair of rails 111. The pallet 141 is moved on the pair of rails 111 by the wheels 141R on the pallet 141 side.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an article storage shelf such as a pallet rack provided with a pallet transport mechanism constituted by a pallet transport carriage and a drive truck thereof.

[0002]

[Prior art]

 The applicant of the present application filed an application for “article storage shelf” in Utility Model Registration Application No. 008003 in 1995, and obtained Utility Model Registration No. 3020342. It consists of an elongated rack base with one end at the cargo entry / exit end and the other end at the back end, and is installed along the longitudinal direction on both sides of the rack base to enable the movement of multiple pallets for loading cargo. A pair of free rollers consisting of a plurality of free rollers to be supported, and a first guide rail and a second guide rail provided between the pair of free rollers at a position lower than the pallet support level. A plurality of pallet hooks movably arranged on the first guide rail, and provided on the upper surface thereof, the pallet hooks being capable of contacting and engaging with the pallet; A retracting urging means for retreating the carriage to the back side on the first guide rail in a normal state; and a movable means arranged on the second guide rail so that cargo can enter on the second guide rail. A drive bogie for driving a transport bogie that travels from the outgoing end toward the back side, one end of which is connected to the transport bogie, and the other end of which is connected to the drive bogie, and the middle part is the rack-based cargo ingress / egress end. A power transmission member that advances the transport trolley toward the cargo entry / exit end as the drive trolley moves in the rearward direction by being engaged with the installed folding relay member, and the transport trolley moves toward the cargo entry / exit end. When the transport pallet is moved forward, the pallet hook is brought into contact with the pallet on the free roller by raising the transport pallet or the pallet hook while keeping it horizontal, and the transport trolley is retracted backward. When the transport trolley or the pallet hook is kept horizontal, the pallet hook is lowered and the pallet hook is disengaged from the pallet on the free roller.

In this article storage shelf, a rack portion is formed by installing a pair of free rollers on both sides of a rack base along the longitudinal direction, so that a plurality of pallets for loading cargo can be smoothly placed. It is supported so that it can be moved.

[0004]

[Problems to be solved by the invention]

 However, in the article storage shelf, a pair of free rollers capable of supporting a plurality of pallets is used in the rack, so that many free rollers are required due to its structure, which is expensive, and the cost is high as a whole. There was a problem that has become.

[0005] The present invention solves such a problem, and in the article storage shelf, the rack portion is changed to a simple structure without impairing the pallet transport function, thereby achieving a significant cost reduction. The purpose is to aim.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, in the goods storage shelf according to the present invention, a plurality of pallets for loading cargo of a truck type having wheels are used, one end of which is a cargo entrance / exit end or a cargo exit end, and the other end is a back end. A rack is constructed by installing a pair of rails that support each cargo loading pallet so that they can run along the longitudinal direction on both sides of an elongated rack base set as a side end or a cargo feeding end. In addition, a pallet transport mechanism is provided between the pair of rails.

[0007]

[Action]

 According to the present invention, since the pallet is made to travel on the pair of rails by the pallet-side wheels, the rack portion can be changed to a simple structure without reducing the pallet transfer performance.

[0008]

【Example】

 FIG. 1 is a side sectional view showing the overall configuration of a first embodiment of a pallet rack, which is a kind of article storage shelf to which the present invention is applied, and FIG. 2 is a plan view of the pallet rack. In FIG. 1, reference numeral 100 denotes a rack base, which is composed of a plurality of pillars 104 standing on the floor and a plurality of base frames 101 mounted and supported on the pillars 104. They are arranged side by side in the width direction on an elongated flat area in which one end is set as the cargo entrance 102 and the other end is set as the back end 103 in advance. On this rack base 100, a pair of rails 111 for movably supporting a pallet for loading cargo is installed, and a rack section 110 is configured. A first guide rail 120 is installed at a position lower than the pallet bottom between these rails 111, and a pallet carrier 130 is movably arranged on the guide rail 120. A pair of second guide rails 140 having a V-shaped cross section are installed on the cargo entrance / exit end 102 side of the pair of rails 111, and a drive carriage 150 for driving the transport carriage is mounted on the second guide rail 140. Are movably arranged, and these constitute a pallet transport mechanism. Hereinafter, the above-described units will be described in more detail.

First, as shown in FIG. 3, a pallet 141 used for this pallet rack adopts a bogie system having a total of four wheels on two wheels on one side. That is, as shown in FIG. 3 and FIG. 4, the pallet body 141P is assembled in a thin box structure (having a height of several cm to several tens cm) using a wooden plate or square material, An opening is formed in. Further, the upper surface is formed in a table shape, and a plurality of plate members 142 are laid over the lower surface in the horizontal direction, and are arranged at regular intervals in the front-rear direction. Therefore, a gap 143 having a predetermined size is formed between the plate members 142 on the lower surface. In such a pallet body 141P, support frames 141F for wheels, which are bent in a substantially U-shape, are fixed to the left and right front and rear portions of the bottom surface, respectively, and a wheel 141R is supported by the support frames 141F. Have been.

The pallet 141 has predetermined dimensions set for the outer diameter of the wheel 141R and the vertical length of the support frame 141F, and the bottom of the pallet 141 has a predetermined height with respect to the rack base 100. Is set.

In the pallet rack, as shown in FIG. 3, each of the pair of rails 111 is made of an elongated rail member having a substantially U-shaped cross section on which each wheel 141R of the pallet 141 can roll. Along the longitudinal direction, that is, from the cargo entry / exit end 102 to the back end 103.

The first guide rail 120 and the carrier 130 are arranged at substantially the center of the pallet rack in the width direction. As shown in FIG. 3, the first guide rail 120 is formed of an elongated rail frame 115 having a substantially U-shaped cross section with an open upper surface, and is installed on the rack base 100 via a hollow base 120D having a fixed height. Have been. As shown in FIG. 1, on the inner side surface of the first guide rail 120, a rear lower position rail surface 124 set to a fixed length portion on the innermost side and a rear lower position rail surface 124 It is continuous with the front end, and is connected to the rear ascending contact surface 125 which is inclined upward at a predetermined angle from the back side to the cargo entrance / exit side, and is connected to the front end (upper end portion) of the rear ascending contact surface 125. A rear high position rail surface 126 extending substantially horizontally from the rear side toward the cargo entrance / exit end side, and a predetermined distance from the position of the rear end 103 of the first guide rail 120 toward the cargo entrance / exit end 102 side. The front low-level rail surface 121 set at the position of the intermediate portion and the front end of the front low-level rail surface 121 are inclined upward at a predetermined angle from the back toward the cargo entry / exit end. Front uphill contact surface 122 and front uphill connection Continuous to the front end of the 122 (top end portion), and a front high position rail surface 123 which extends substantially horizontally toward the cargo and out-end side from 奧側.

The first guide rail 120 is laid on the rack base 100 between the pair of rails 111 via a stand 120D. Here, each rail surface 121, 123, 124, 126 is set at a position lower than the bottom of the pallet 141 on the pair of rails 111 by a predetermined dimension. Further, the point at which the front up-slope connecting surface 122 connects to the front low-position rail surface 121 and the point at which the rear up-slope connecting surface 125 connects to the rear low-position rail surface 124 are defined by the first guide rail 120. It is set at a fixed distance in the longitudinal direction (this is referred to as “front-back separation pitch”). Further, the front lower rail surface 121 and the rear lower rail surface 124 are set at the same height position (that is, the bottom surface of the rail frame 115), and the front higher rail surface 123 and the rear higher rail surface 123 are positioned at the same height. The surface 126 is also set at the same height position. Further, the inclination angle of the front-side upwardly inclined connecting surface 122 and the inclination angle of the rear-side upwardly inclined connecting surface 125 are set to substantially the same angle.

On the other hand, as shown in FIG. 5, the transport vehicle 130 has an elongated frame 131 having a substantially U-shaped cross section with an open upper surface, and a front and rear position on both sides of the frame 131 between the side plates of the frame 131. A front wheel 132 and a rear wheel 134 rotatably connected by an inserted axle 136 are rotatably supported by pins 135 disposed inside the frame 131 and inserted between both side plates of the frame 131. A plurality of pallet hooks 133 and a cover plate 137 installed on the open upper surface of the frame 131.

The frame 131 has a cross-sectional structure large enough to be accommodated in the U-shaped groove space of the rail frame 115 of the first guide rail 120, and has a predetermined length (for example, the first guide rail 120). 120, and the pallet hook 133 has a predetermined height.

The front wheels 132 and the rear wheels 134 are connected by a point at which the front uphill connecting surface 122 is connected to the front low rail surface 121 and a rear uphill connecting surface 125 at the rear low rail surface 124. It is attached to the carrier 130 at a pitch substantially equal to the front and rear separation pitch between the connection points. Further, in this embodiment, the front wheels 132 and the rear wheels 134 are respectively mounted on two sides, each of which is four in total, but may be mounted on each side, two in total.

The front and rear low-position rail surfaces 121 and 124 described above, the front and rear high-position rail surfaces 123 and 126, the front and rear ascending contact surfaces 122 and 125, and the front side And the rear wheels 132 and 134 constitute an elevating means. When the transport vehicle 130 moves forward toward the cargo entrance 102, the transport vehicle 130 or the pallet hook 133 is raised while being kept horizontal. Then, the pallet hook 133 is brought into contact with the bottom of the pallet 141 on which the cargo 144 is placed on the pair of rails 111, and when the transport cart 130 is retracted toward the rear end 103, the transport cart 130 or the pallet The pallet hook 133 is disengaged from the bottom of the pallet 141 by lowering while keeping the hook 133 horizontal.

The pallet hook 133 is formed of a U-shaped structural member in which a side plate portion is formed into a trapezoid, and as shown in FIG. 4, the upper base (shorter bottom) of the trapezoid is the front side and the lower base (long). The lower side of the trapezoid is accommodated in the frame 131 such that the pin 135 passes through a position deviated upward from the center of the side surface of the trapezoid and is pivotally attached to the frame 131. When the pallet hook 133 is pivotally attached to the frame 131, the lower oblique side of the trapezoidal side surface is set so as to contact the bottom surface of the frame 131 almost in line. Therefore, when an external force is applied in the direction of arrow S in FIG. 4 near the upper end of the pallet hook 133, the pallet hook 133 tries to rotate clockwise around the pivot point by the pin 135. The rotation is restricted by the lower oblique side of the trapezoidal side surface being in contact with the bottom surface of the frame 131. On the other hand, when an external force is applied near the upper end of the pallet hook 133 in the direction opposite to the arrow S in FIG. 4, the pallet hook 133 rotates counterclockwise around the pivot point by the pin 135. However, in this case, there is nothing obstructing the rotation, so that the pallet hook 133 can rotate in the counterclockwise direction. Since the pallet hook 133 is pin-connected to a relatively high position of the frame 131, its upper end protrudes above the upper edge of the frame 131. Therefore, as shown in FIG. 5, an opening 138 is formed in the cover plate 137, and the pallet hook 133 projects upward from the opening 138. The cover plate 137 is connected to the upper end flange of the frame 131 by welding or screwing. A plurality of the pallet hooks 133 are provided at regular intervals in the longitudinal direction of the carrier 130.

The height of the transport vehicle 130 is such that when the transport vehicle 130 is on the front and rear low position rail surfaces 121 and 124 on the first guide rail 120, each pallet hook 133 is The height of the carriage 130 does not reach the bottom of the pallet 141 on the pair of rails 111, and the height of the carriage 130 and the front and rear high-side rail surfaces 123 and 126 is such that the carriage 130 is on the first guide rail 120. When the pallet hooks 133 are on the front and rear high-side rail surfaces 123 and 126, each pallet hook 133 projects above the bottom of the pallet 141 on the pair of rails 111 so as to contact and engage with the pallet 141. Dimensions are set. That is, the front low-side rail surface 121 and the rear low-side rail surface 124 allow the carrier trolley 130 to assume a retracted position where each pallet hook 133 is separated downward from the pallets 141 on the pair of rails 111. The front-side high position rail surface 123 and the rear-side high position rail surface 126 take the forward position where the pallet hook 133 of the transport vehicle 130 can be brought into contact with and engaged with the pallet 141. Accordingly, FIGS. 1 and 4 show that the pallet hooks 133 are pulled down on the front and rear low-level rail surfaces 121 and 124 so that the pallet hooks 133 are separated downward from the pallets 141 on the pair of rails 111. This shows a state where the retracted position is set. On the other hand, FIGS. 7 and 9 show that the carriage 130 rides on the front and rear high position rail surfaces 123 and 126 so that each pallet hook 133 comes into contact with the pallet 141 on the pair of rails 111. This shows a state in which a possible forward position is taken.

On the other hand, as shown in FIG. 6, each of the pair of second guide rails 140 is composed of two rail frames each having a V-shape in cross section, with its protruding portions facing inward. The frame 140 is laid in a certain range on the rack base 100 on the side of the cargo entrance 102 along the inside of the pair of rails 111. The drive carriage 150 includes a frame 151 having an operation surface 154 on the front surface connecting the top plate and the bottom plate, and a drum shape provided on both sides of the frame 151 so as to conform to the V-shaped cross section of the second guide rail 140. And the guide rollers 152. Each guide roller 152 is fixed to a fixed shaft 153 via upper and lower bearings (not shown), and the fixed shaft 153 is fixed to a top plate and a bottom plate of the frame 151. The top plate of the frame 151 is set below the pallet 141 on the pair of rails 111. Note that the shape of the guide roller 152 does not necessarily have to match the V-shaped cross section of the guide rail 140, and the point is that the upper half of the guide roller receives the load of the drive cart 150 at the tapered portion of the upper half, and It is sufficient that at least the horizontal movement of the driving bogie 150 can be restricted in the valley portion. The guide rollers 152 are provided at an appropriate distance, two on each side, for a total of four guide rollers. However, two guide rollers 152 may be provided, one for each side.

Returning to FIG. 1 and FIG. 2, a spring 160 serving as a retraction urging means for retracting the transport vehicle 130 to the rear side on the first guide rail 120 is provided between the transport vehicle 130 and the rack base 100. The carriage 130 is normally retracted onto the front and rear low-level rail surfaces 121 and 124 (ie, the retracted position) by the urging force of the spring 160, and the drive carriage 150 is Are arranged on the pair of second guide rails 140 on the cargo entry / exit end 102 side. The transport cart 130 and the drive cart 150 are connected at one end to the transport cart 130, the other end is connected to the drive cart 150, and the intermediate portion is a folded relay member installed on the cargo entry / exit end 102 side of the rack base 100. A power transmission member, which is wound and engaged with the pulley 170 in a U-turn shape, that is, a driving wire 180. By connecting the transport vehicle 130 and the drive vehicle 150 in this manner, when the drive vehicle 150 is pushed backward on the second guide rail 140, the transport vehicle 130 is moved toward the cargo entrance 102. You can move forward.

Note that a sprocket can be used as the return relay member in addition to the pulley 170, and a chain can be used as the power transmission member in addition to the drive wire 180. Further, a counterweight other than the spring 160 can be used as the retraction urging means.

Next, loading and unloading of cargo based on the operation of the pallet transport mechanism by the transport trolley 130 and the drive trolley 150 in the first embodiment will be described. In a normal state, the transport carriage 130 is pulled by the urging force of the spring 160 to the rear of the first guide rail 120, and the front and rear wheels 132, 134 are respectively located on the front and rear low-level rail surfaces 121, 124. And the carriage 150 is stopped at the cargo entry / exit end 102 on the second guide rail 140 by the manual pull-in of the drive wire 180 of the carriage 130.

When the cargo 144 is carried into the pallet rack, first, the pallet 141 on which the cargo is loaded is lifted by the fork 145 for loading the cargo of the forklift, and then the pallet 141 is moved from the cargo entrance / exit end 102 to both sides of the rack base 100. On a pair of rails 111. That is, the front and rear wheels on the left side of the bottom of the pallet 141 and the front and rear wheels on the right side are fitted on the respective rails 111 and are driven. Next, the cargo is pushed with a fork, and the pallet 141 is pushed inward while traveling on a pair of rails 111 by each wheel 141R. At this time, since the transport carriage 130 is stopped on the lower rail surfaces 121 and 124 on the front and rear sides of the first guide rail 120, each pallet hook 133 is connected to the pallet 141 on the pair of rails 111. It is separated downward from the bottom surface and does not interfere with the pallet 141. Then, the same carry-in operation is repeated as necessary, and the pallets 141 are mutually pushed by the pallets 141 on the near side and sequentially pushed into the back side.

Next, when carrying out the cargo from the pallet rack, first, the operating surface 154 of the drive truck 150 is pushed from the cargo entrance / exit end 102 with the pair of forks 145 for loading the cargo of the forklift to move the drive truck 150 to the second position. The second guide rail 140 is driven forward in the depth direction. At this time, since the guide rollers 152 on both sides are guided by the second guide rails 140, the drive carriage 150 moves without tilting in the left-right direction. Even if the vehicle is inclined, the drum-shaped guide roller 152 provided on the drive carriage 150 is guided by the second guide rail 140 having a V-shaped cross section, so that the trajectory is corrected and the vehicle proceeds straight straight. As a result, the transport vehicle 130 connected to the drive vehicle 150 via the drive wire 180 moves from the front and rear low position rail surfaces 121 and 124 of the first guide rail 120 toward the cargo entrance 102. 1, 4 and 5, and the front and rear wheels 132, 134 of the carriage 130 are almost simultaneously brought into contact with the front and rear ascending contact surfaces 122, 125, respectively. When it reaches, it climbs up while keeping the entire transport vehicle 130 horizontal, and rides on the front and rear high position rail surfaces 123 and 126 (the state of FIGS. 7, 8 and 9).

At this point, each pallet hook 133 on the upper surface of the carrier 130 comes into contact with the bottom of the pallet 141. Depending on the position of the pallet 141 on the pair of rails 111, the pallet hook 133 may abut the rear edge of the bottom of the pallet 141, or may enter the gap 143 at the bottom of the pallet 141 and define the gap 143 on the front side. May hit the rear edge of the plate member 142.

An external force is applied to the pallet hook 133 in contact with the bottom of the pallet 141 in the direction indicated by the arrow S in the figure as already described with reference to FIG. Since the trapezoidal oblique side restricts the clockwise rotation of the pallet hook 133, the forward movement of the carrier 130 is directly transmitted to the pallet 141. Therefore, when the drive bogie 150 is continuously pushed in with the two forks 145 from this state, the transport bogie 130 further moves forward on the front and rear high position rail surfaces 123, 126, and the pallet hook of the transport bogie 130 is moved. The pallet 141 is moved forward on the pair of rails 111 by being pushed by 133, and the cargo 144 is moved to the cargo entry / exit end 102 side.

Once the pallet 141 is sent out to the front, once the fork 145 is removed from the drive carriage 150, the pressing of the fork 145 against the drive carriage 150 is released, and the transport carriage 130 is pulled by the spring 160 to the first position. On the guide rail 120, the front and rear high-side rail surfaces 123 and 126 are retracted in the opposite direction to the front. During the backward movement of the carriage 130, if any pallet hook 133 has entered the gap 143 at the bottom of the pallet 141 during the forward movement, the pallet hook 133 is moved by the backward movement of the carriage 130. The pallet 141 moves to the back side, and the rear end of the upper end abuts on the front edge of the plate 142 on the rear side of the gap 143 at the bottom of the pallet 141. As a result, an external force is applied to the pallet hook 133 in the direction opposite to the arrow S in FIG. 4, but in this case, there is nothing to restrain the pallet hook 133 from rotating in the counterclockwise direction. 133 rotates counterclockwise, falls forward, and retreats without engaging the bottom of the pallet 141. Then, when the front and rear wheels 132, 134 reach the front and rear ascending contact surfaces 122, 125, respectively, the carrier 130 descends while maintaining a horizontal posture, and returns to its original retracted position. It is driven backward to certain front and rear low position rail surfaces 121 and 124. At the same time, the drive carriage 150 is driven backward on the second guide rails 140 to the original cargo entrance 102 by manually retracting the drive wire 180 into the transport carriage 130. Finally, the pallet 141 and the cargo 144 sent to the front are carried out by a forklift. By repeating such an operation as necessary, the subsequent pallet can be similarly sent out to the cargo entry / exit side and carried out by a forklift.

As described above, according to the first embodiment, the truck type pallet 141 having a total of four wheels 141 R in front, rear, left and right is used, one end of which is the cargo entrance 102, and the other end is the rear end 103. The rack unit 110 is constructed by laying a pair of rails 111 that support the pallet 141 so as to be able to travel along both sides of the elongated rack base 100 set as Since the pallet 141 is moved on the pair of rails 111 by the wheels 141R on the pallet 141 side, the pallet 141 is moved while the pallet 141 is maintained. It can be changed to a simple structure.

In the above-described first embodiment, the operation example in which the operation of the drive bogie 150 is performed by a forklift has been described. However, it is possible to easily carry out the drive by the size and weight of the stored cargo 144. In some cases, the pallet 141 and the cargo 144 can be sufficiently carried out even if the operator pushes the drive bogie 150 directly by hand. Further, when it is not possible for the operator to perform a direct manual operation, a manual operation device such as a lever mechanism or a handle mechanism for operating the driving carriage 150 at the cargo entrance 102 of the pallet truck or for directly operating the transport carriage 130 is preferable. A pallet 141 can be carried out by a worker operating a lever or a handle. Of course, it is also possible to attach a drive motor that operates by operating a switch. Such an embodiment has a relatively narrow space for storing goods, which is different from a warehouse where a truck such as a forklift can be used freely, such as a library in a library, a storage in various public facilities, a safe in a financial institution, Alternatively, the present invention can be applied to various article storages such as a home storage room.

FIGS. 10 and 11 show the configuration of a pallet rack according to a second embodiment of the present invention. The same parts and members as in the first embodiment are denoted by the same reference numerals. In this embodiment, the pallet 141 is a first-in first-out pallet rack in which a pallet 141 is fed in from one end of the rack section 110 and taken out from the other end. Here, one end of the rack portion 110 (corresponding to the cargo entrance / exit end 102 of the first embodiment) is connected to the cargo take-out end 102T, and the other end (corresponding to the back end 103 of the first embodiment). It is distinguished as the cargo feeding end 103P. The overall structure is substantially the same as the structure of the first embodiment, except that the rail surface of the first guide rail 120S is formed in a horizontal plane with no height difference. That is, it is formed of an elongated rail frame having a substantially U-shaped cross section with an open upper surface, and is installed on the rack base 100 via a hollow base 120D having a certain height. On the inner side surface, a rail surface 123L having the same height is formed from the cargo feeding end 103P side to the cargo taking out end 102T. Here, the first guide rail 120S is installed on the table 120D, and the rail surface 123L is set to have substantially the same height as the high-level rail surfaces 123 and 126 of the first embodiment.

In this first-in first-out method, cargo is loaded and unloaded based on the following operation of the pallet transport mechanism. In a normal state, the carriage 130 is pulled by the biasing force of the spring 160 toward the cargo feeding end 103P of the first guide rail 120, and stopped at a stand-by state, and the drive wire 180 of the carriage 130 is manually retracted. As a result, the drive cart 150 is stopped on the second guide rail 140 at the cargo take-out end 102T. In addition, each pallet hook 133 on the upper surface of the transport trolley 130 protrudes above the pair of rails 111 so as to be always engageable with the bottom of the pallet 141.

When the cargo is loaded into the pallet rack, first, the pallet 141 on which the cargo is loaded is lifted by a fork for loading a forklift, and then the pallet 141 is loaded from the cargo feeding end 103P to a pair of both sides of the rack base 100. Place on rail 111. That is, the left and right wheels 141R on the left side of the bottom of the pallet 141 and the right and left wheels 141R on the right side are fitted on the respective rails 111 and are driven. At this time, the pallet 141 collides with the pallet hooks 133 of the carriage 130 waiting at the cargo feeding end 103P side, and when an external force is applied in a direction opposite to the arrow S in FIG. Tries to rotate counterclockwise about the pivot point by the pin 135, but in this case, there is nothing to prevent the rotation, so the palette hook 133 can rotate counterclockwise. . Therefore, the pallet 141 is pushed in while pushing down the pallet hook 133 toward the cargo take-out end 102T. Next, the cargo is pushed by a fork, and the pallet 141 is pushed inward while traveling on the pair of rails 111 by each wheel 141R. Then, the same loading operation is repeated as necessary, and the pallets 141 are mutually pushed by the pallets 141 on the near side and are sequentially pushed into the back side.

On the other hand, when unloading cargo from the pallet rack, first, the pair of forks 145 for loading cargo of the forklift pushes the operating surface 154 of the drive cart 150 from the cargo take-out end 102T to drive the drive cart 150. Is driven forward in the direction of the cargo feed-in end 103P on the second guide rail 140. As a result, the transport trolley 130 connected to the drive trolley 150 via the drive wire 180 is driven forward on the rail surface 123L of the same height of the first guide rail 120S toward the cargo take-out end 102T. You.

The pallet hooks 133 on the upper surface are brought into contact with and engaged with the bottom of the pallets 141 by the forward drive of the transport trolley 130. In FIG. 11, an external force in the direction of arrow S is applied to the pallet hook 133 in contact with the bottom of the pallet 141, but the trapezoidal hypotenuse abutting the bottom surface of the frame 131 restricts the clockwise rotation of the pallet hook 133. Therefore, the forward movement of the carrier 130 is directly transmitted to the pallet 141. Therefore, when the drive cart 150 is continuously pushed by both forks from this state, the transport cart 130 further moves forward on the first guide rail 120S and pushes the pallet hook 133 of the transport cart 130. Then, the pallet 141 advances on the pair of rails 111, and the cargo is moved to the cargo take-out end 102T side.

Then, the pallet 141 loaded with the cargo sent out to the front is carried out by a forklift. By repeating such an operation as necessary, the subsequent pallet can be similarly sent to the cargo take-out end 102T side and carried out by a forklift.

As described above, also in the first-in first-out pallet rack of the second embodiment, similarly to the first embodiment, the rack unit 110 has a simple structure while maintaining the transfer performance of the pallet 141. In addition, the first guide rail 120S can be provided with a rail surface 123L having no height difference, so that the structure of the first guide rail 120S and the dimensional setting of the transport vehicle traveling on the rail 120S can be further improved. There is an advantage that the measurement can be simplified.

In this embodiment, if the cargo can be easily carried out depending on the size and weight of the stored cargo, the operator pushes the drive bogie 150 directly by hand. However, the pallet 141 and the cargo can be sufficiently carried out. If it is not possible for the operator to perform a direct manual operation, a manual operation device such as a lever mechanism or a handle mechanism for directly operating the drive cart 150 or the transport cart 130 directly on the cargo take-out end 102T of the pallet rack is used. The pallet 141 can be carried out when the operator performs a lever operation or a handle operation. Of course, it is also possible to attach a drive motor that operates by switch operation.

FIG. 12 and FIG. 13 show the configuration of a third embodiment of the pallet rack to which the present invention is applied. Here, of the pallet transport mechanisms used in the first and second embodiments, the second guide rail 140 and the drive truck 150 for driving the transport truck, and the pulley 170, the drive wire 180, and the spring 160 are used instead. Another drive device for moving the carrier 130 forward and backward is illustrated. It is to be noted that the same reference numerals are given to the same parts and members as in the first and second embodiments.

As described above, the first guide rail 120 (120S) for the transport trolley 130 is composed of an elongated rail frame 115 having a U-shaped cross section with an open upper surface, and has a fixed height on the rack base 100. It is installed via a hollow base 120D. A plurality of slits 190U and 190D communicating with each other in the longitudinal direction are formed in the bottom surface of the guide rail 120 (120S) and the upper surface of the table 120D. Here, predetermined lengths and widths are set for the slits 190U and 190D. Inside the table 120D, cylinders 200 are respectively installed at positions deviated from directly below each slit 190D on a straight line directly below the slit 190D. The advance / retreat drive unit 200P of each cylinder 200 is configured to move forward and backward immediately below each slit 190D. The forward / backward drive unit 200P of the cylinder 200 and the carriage 130 on the first guide rail 120 (120S) are connected via the connecting member 201 through each slit 190D. The operation section of these cylinders 200 is installed at the cargo entry / exit end or the cargo take-out end side of the pallet rack.

As described above, by the reciprocating operation of the advance / retreat driving unit 200 P of each cylinder 200, the transport carriage 130 is retreated on the first guide rail 120 or 120 S to the far side end or the cargo feeding end side, and stands by. Is done. Further, by the forward movement of the forward / backward drive unit 200P of each cylinder 200, the transport carriage 130 is moved forward on the first guide rail 120 or 120S to the cargo entry / exit end or the cargo takeout end, and each pallet hook 133 is connected to the pair of rails 111. The pallet 141 is brought into contact with the upper pallet 141 to be conveyed.

As described above, according to the pallet transport mechanism of the third embodiment, since the entire transport carriage 130 is driven by the plurality of cylinders 200, the rack unit 110 can be lengthened, and the entire pallet rack can be further reduced. When the vehicle is increased in size or accommodates a cargo having a large load, the operability of the transport trolley 130 is excellent, and the transport capability of the cargo can be improved.

FIGS. 14 and 15 show the configuration of a fourth embodiment of the present invention. In this embodiment, the rack portions 110 of the pallet rack have a three-layer structure, and four rack units 110 are arranged side by side in a horizontal direction to be integrated. As the format, any structure of the first-in first-out method of the first embodiment and the first-in first-out method of the second embodiment can be adopted. Further, the pallet carrying mechanism of the third embodiment can be replaced. In this way, since the four pallet racks are arranged, the columns are provided only on the left and right sides. As a result, the article storage space can be effectively used, and the number of columns can be reduced as a whole to reduce costs.

[0044]

[Effect of the invention]

 As is apparent from the above embodiment, the present invention uses a plurality of truck-type cargo loading pallets having wheels, and has an elongated rack base set at one end with a cargo entry / exit end and the other end at a back end. A rack is constructed by installing a pair of rails on both sides of the rail along the longitudinal direction to support each cargo loading pallet so that it can run, and by providing a pallet transport mechanism between the pair of rails. Since the pallet is run on a pair of rails by the wheels on the pallet side, the rack part is changed to a simple structure with a small number of parts without impairing the pallet transfer function, resulting in significant cost reduction. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view showing a configuration of a pallet rack as an article storage shelf according to a first embodiment of the present invention, showing a state where a carrier has returned to a retracted position.

FIG. 2 is a plan view showing a configuration of a pallet rack of the embodiment.

FIG. 3 is an enlarged front view of a pallet used for the pallet rack.

FIG. 4 is an enlarged partial side cross-sectional view showing a state where the transporting cart as shown in FIG. 1 is returning to the retracted position in the embodiment.

FIG. 5 is a cross-sectional view of the embodiment shown in FIG. 4 showing a state in which the carriage is returning to the retracted position as shown in FIG. 1;
FIG. 4 is a front sectional view along X-ray.

FIG. 6 is a partially broken plan view (a) showing a second guide rail and a driving bogie traveling on the second guide rail in an enlarged scale, and a sectional front view (b) of the embodiment.

FIG. 7 is a partial side cross-sectional view showing, in an enlarged manner, a state in which the carrier is moving forward to a pallet delivery position in the embodiment.

FIG. 8 is a view showing a state in which the transport vehicle is moving forward to a pallet delivery position in the above-described embodiment;
It is front sectional drawing in the Y line.

FIG. 9 is a side cross-sectional view showing a state in which the carrier is moving forward to a pallet delivery position in the embodiment.

FIG. 10 is a side sectional view showing a configuration of a pallet rack according to a second embodiment of the present invention.

FIG. 11 is a partially enlarged side view of the embodiment.

FIG. 12 is a partially enlarged front sectional view of a pallet rack according to a third embodiment of the present invention.

FIG. 13 is a side sectional view of the embodiment.

FIG. 14 shows a configuration of a pallet rack according to a fourth embodiment of the present invention, wherein (a) is a front view and (b) is a side view.

FIG. 15 is a partially omitted plan view showing a configuration of a pallet rack in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Rack base 101 Base frame 102 Cargo in / out end 102T Cargo take-out end 103 Back end 103P Cargo in / out end 104 Support 110 Rack part 111 A pair of rails 115 Rail frame 120, 120S First guide rail 120D stand 121, 124 Low position Rail surface 122, 125 Incline contact surface 123, 126 High position rail surface 123L Rail surface of the same height 130 Carriage truck 131 Frame 132, 134 Wheel 133 Pallet hook 135 Pin 136 Axle 137 Cover 138 Opening 140 Second guide rail 141 Pallet 141P Pallet body 142 Plate 143 Clearance 141F Support frame for wheels 141R Wheels 144 Cargo 145 Fork 150 Driving cart 151 Frame 152 Guide row 153 fixed shaft 154 running surfaces 160 spring 170 pulley 180 drive wire 190U, 190D slit 200 cylinder 200P advancing drive unit 201 connecting member

Claims (4)

[Utility model registration claims] 1. A trolley-type cargo loading pallet having wheels, one end of which has a cargo entrance / exit end and the other end has a back end which is set on both sides of an elongated rack base along a longitudinal direction thereof. A rack is provided by installing a pair of rails that support each cargo loading pallet so that it can travel, and a guide rail laid between the pair of rails at a position lower than the bottom of the pallet; A plurality of pallet hooks, which are movably arranged on the upper side, and are provided on the upper surface thereof with a plurality of pallet hooks capable of being in contact with and engaged with the pallet at predetermined intervals in the longitudinal direction for pallet transfer; When being advanced toward
With the transport trolley or pallet hook kept horizontal, raise the pallet hook into contact with the bottom of the pallet, and hold the transport trolley or pallet hook horizontal when the transport trolley is retracted backward. The pallet transport mechanism is constituted by an elevating device that lowers the pallet hook from the bottom of the pallet by lowering the pallet hook, and a transport trolley drive device that advances the transport trolley toward the cargo entry / exit end and retracts toward the far end. Constituent article storage shelves. 2. A trolley-type cargo-loading pallet having wheels, one end of which is a cargo take-out end, and the other end of which is a cargo feed-in end. A rack is provided by installing a pair of rails that support each cargo loading pallet so that it can travel, and a guide rail laid between the pair of rails at a position lower than the bottom of the pallet; A plurality of pallet hooks which are movably arranged on rails, project from the upper surface so as to be able to engage with the pallets, and are tiltable in the direction of the cargo take-out end, are arranged at predetermined intervals in the longitudinal direction for pallet conveyance. A pallet transport mechanism is provided by a transport trolley that moves the transport trolley forward toward the cargo take-out end and retracts toward the cargo feed-in end. The article storage shelf that forms. 3. A retraction urging means for retreating the transport vehicle to a far end on the guide rail or a cargo feed end when the transport vehicle drive device is in a normal state, and between a pair of rails, a cargo input / output end or a cargo removal end. On the second guide rail laid below the bottom of the pallet so as to be able to run on the second guide rail, and on the second guide rail, starting from the cargo entrance / exit end or the cargo take-out end toward the rear end. Or, a drive truck for driving a carrier truck traveling toward the cargo feed end end, one end connected to the carrier truck, the other end connected to the drive truck, and an intermediate portion at the cargo entry / exit end side or the cargo removal end side of the rack base. When the drive bogie is moved in the direction of the rear end or in the direction of the freight sending end by being engaged with the return relay member installed in the vehicle, the transport bogie is moved to the freight in / out end or the freight take out end side. The article storage shelf according to claim 1, further comprising: a power transmission member that moves forward. 4. A cylinder connected to the transport vehicle, the transport vehicle driving device directly moving the transport vehicle toward the cargo entry / exit end or the cargo take-out end, and retracting the transport vehicle toward the back end or the cargo feed-in end. Claim 1 which is constituted by
Or the article storage shelf according to 2.