JP7222141B1 - skid stacking system - Google Patents

Abstract

[Problem] When constructing a skid stack in which skids in a standard position attached to multiple horizontal girders and skids in an inverted position that are flipped upside down are stacked alternately on the top surface of multiple longitudinal girders, it is necessary to To provide a skid stacking system that can accurately shift the phase according to the configuration. [Solution] A skid S1 in a standard posture is once lifted, a skid S2 in an inverted posture is moved below it, and the vertical girders 1 of both skids S1 and S2 are stacked with the phases shifted when viewed from above to form a skid pair SP. A shifted skid pair ZSP is constructed by relatively moving the longitudinal girder phase shifting skid stacking device 5 and both skids S1 and S2 constituting the skid pair SP along the longitudinal girder 1 to shift the phase of the transverse girder 2. A skid pair stacking device 6 for shifting the transverse girder phase is provided, which once lifts the shifted skid pair ZSP, constructs a new shifted skid pair NZSP below it, and stacks them to form a skid stacked body 18. [Selection diagram] Figure 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skid stacking system for compactly stacking a plurality of empty skids on which loads are placed when transporting loads in a factory or the like.

As shown in FIG. 1(a), the skid is constructed by, for example, fixing a plurality of horizontal girders 2 perpendicularly to the upper surfaces of a plurality of longitudinal girders 1 arranged in parallel with each other with screws or the like. In a factory or the like, cargo is loaded and transported by a forklift. Such skids are stacked and stored in multiples when empty and not in use.

As shown in FIG. 1(a), the present inventors reversed the skid S1 in a standard posture in which the stringer 1 is at the bottom and the horizontal girder 2 is at the top, and as shown in FIG. Skid S2 in inverted posture with 1 on top and skid S2 in inverted posture alternately stacking skids S1 in standard posture and skids S2 in inverted posture. It is devised to position the stringer 1 of the skid S2 in the attitude and to position the beam 2 of the skid S2 in the inverted attitude between the beams 2 of the skid S1 in the normal attitude.

As a result, the height of the stringer 1 of the vertically adjacent skid S1 in the standard posture and the height of the stringer 1 of the skid S2 in the inverted posture are offset, and the horizontal beams 2 of the vertically adjacent skid S1 in the standard posture. and the height of the girders 2 of the inverted skid S2 are offset, so that the height of the stacked skid stack is higher than if the girders 1 and 2 heights were not offset can be reduced to 1/2.

Japanese Patent No. 4837136 JP 2003-176026 A

However, the work of alternately stacking the skids S1 in the standard posture shown in FIG. 1A and the skids S2 in the reverse posture shown in FIG. Considering the weight, the work load is large and practically difficult.

Moreover, even if the stacking is performed using a forklift, in order to offset the heights of the vertical girder 1 and the horizontal girder 2 of the vertically adjacent skids S1 and S2, the phase of the vertical girder 1 and the phase of the horizontal girder 2 are It is necessary to stack the skids S1 and S2 one by one while adjusting the positions so as to shift the skids so as to prevent the cargo from collapsing.

In addition, when considering a device that mechanizes the manual work by workers and alternately stacks the skids S1 in the standard posture and the skids S2 in the inverted posture one by one, the skids S1 and S2 that are vertically adjacent to each other are one and the same. It is necessary to shift the phase of the stringer 1 and the phase of the horizontal stringer 2 one by one, and stack the stringers 1 and the horizontal stringer 2 so that they do not overlap, which complicates the configuration and control of the device.

Patent Documents 1 and 2 describe devices for stacking pallets, but these devices have a structure in which the heights of the girders 1 of the skids S1 and S2 are offset when stacking the skids S1 and S2. There is no idea of offsetting the heights of the horizontal beams 2 together. That is, Patent Documents 1 and 2 do not describe the motivation for inventing the present invention.

The object of the present invention, which was devised in consideration of the above circumstances, is to provide a skid stack in which skids in the standard posture and skids in the inverted posture are alternately stacked, and the phase shift of the longitudinal girder and the phase of the cross girder are performed. To provide a skid stacking system capable of precisely performing a phase shift with a simple structure by separating the shift.

According to the present invention, which has been devised to achieve the above object, a skid in a standard orientation in which a plurality of transverse girders are mounted orthogonally on top of a plurality of spaced parallel longitudinal girders; This is a system for constructing a skid stack in which skids in inverted postures are alternately stacked with vertical girders on top and cross girders on the bottom by vertically inverting the skids in the normal posture. When moving the skid in the inverted posture to , determine the position of the skid in the inverted posture so that the girders of the skid in the inverted posture are positioned between the stringers of the skid in the standard posture when viewed from above. A stringer phase shift skid stacking device for lowering a standard attitude skid onto a skid to form a skid pair, and a standard attitude skid and an inverted attitude skid that constitute a skid pair are placed relatively on each stringer. to construct a shift skid pair by shifting the phase of the cross girder of the skid in the reverse posture with respect to the cross girder of the ski in the standard posture as viewed from above, lift the shift skid pair once, and do the same below it. and a cross girder phase-shifted skid pair stacking device that builds a new shifted skid pair with the phase of the girder shifted, and stacks the shifted skid pair on the new shifted skid pair to form a skid laminate. A stacking system for skids is provided.

In the skid stacking system according to the present invention, the stringer out-of-phase skid stacking device comprises a skid conveyor for transporting the standard attitude skid and the inverted attitude skid in a direction perpendicular to the respective stringers, and the transport path of the skid conveyor. It is installed so that it can be retracted freely, allowing the passage of the skid in the standard posture and the skid in the inverted posture when it is immersed, and when it is extended, it contacts the vertical girder of the skid in the standard posture conveyed by the skid conveyor. A first stopper pin that determines the position of the girder at a predetermined position, and a skid in the conveying path of the skid conveyor so that the position can be shifted along the conveying path with respect to the first stopper pin so that it can be retracted and retracted. Allowing the passage of the skid in the posture, contacting the stringer of the skid in the inverted posture conveyed by the skid conveyor when projecting, and viewing the position of the stringer of the skid in the reverse posture from above, the stringer of the skid in the standard posture The skid in the standard posture positioned at the predetermined position by the second stopper pin positioned between them and the first stopper pin is lifted, and the lifted skid in the standard posture is positioned below by the second stopper pin. Lifting and lowering pawls for lowering over the inverted skid to form a skid pair.

In the skid stacking system according to the present invention, the stringer phase-shifting skid stacking device is positioned in the conveying path of the skid conveyor ahead of the first stopper pin and the second stopper pin in the conveying direction of the skid conveyor so as to be retractable. The third stopper pin allows passage of the skid in the standard posture and the skid in the inverted posture when retracted, and when the skid pair is conveyed by the skid conveyor when extended, By contacting the stringers of the skids in the standard posture that make up the skid pair and restricting the movement of the skids in the standard posture, and allowing the movement of only the skids in the reverse posture, the stringers of the skids in the reverse posture are replaced by the skids in the standard posture. It may have a function of pressing against the stringer.

In the skid stacking system according to the present invention, the lateral girder phase-shifted skid pair stacking device is provided in a skid pair conveyor that conveys the skid pairs in the direction along the longitudinal girder and in the conveying path of the skid pair conveyor so that it can be retracted freely. and the ends of the skid girders in the normal orientation and the ends of the skid in the inverted orientation that allow the passage of the skid pair when immersed and constitute the skid pair when extended, forward and backward in the conveying direction of the skid pair conveyor. and the ends of the skids in the normal orientation and the ends of the skids in the inverted orientation that make up the skid pair abut on the uneven abutment members. By contacting each other, the phases of the skid girders in the normal attitude and the skid girders in the inverted attitude may be shifted to form a shifted skid pair.

In the skid stacking system according to the present invention, the cross girder staggered skid pair stacking device includes a lifter for lifting the staggered skid pair and retractable horizontally to the left and right of the lifter to support the staggered skid pair lifted by the lifter. By protruding the holding claws, a new shifting skid pair is constructed in which the phase of the cross beam is shifted by the uneven contact member below the shifting skid pair supported by the holding claws. Then, the new skid pair is lifted by a lifter and pressed against the skid pair supported by the holding claws, and the weight of the skid pair and the new skid pair is supported by the lifter. , and further lift the shifting skid pair and the new shifting skid pair with a lifter to protrude the holding claws below the new shifting skid pair, so that the shifting skid pair and the new shifting skid pair stacked one above the other The holding claws may support the weight of the skid laminate composed of the shifting skid pairs.

In the skid stacking system according to the present invention, a skid reversing device for vertically reversing a skid in a standard posture into a skid in a reverse posture is arranged at the position of the preceding process of the stringer phase shift skid stacking device. , The skid reversing device has a function to send the skid in the standard posture to the stringer phase shift skid stacking device without reversing it, and a function to reverse the skid in the standard posture and send it to the stringer phase shift skid stacking device as a skid in the reverse posture. and may alternately deliver standard and inverted skids to the stringer out-of-phase skid stacker.

In the skid stacking system according to the present invention, a skid assembling device for assembling a standard posture skid from longitudinal girders and cross girders is arranged at the position of the pre-process of the skid reversing device, and the skid assembling device is assembled. A normal attitude skid may be delivered to the skid inverter.

According to the skid stacking system according to the present invention, the following effects can be exhibited.
(1) By stacking a skid in a reversed attitude and a skid in a standard attitude by means of a stringer phase-shifted skid stacking device, a skid pair in which the phases of the stringers of vertically adjacent skids are shifted is formed, and a pair of transverse girder phase-shifted skids is stacked. By stacking the skid pairs with the device, a skid laminate is obtained in which the phases of the cross beams of the vertically adjacent skid pairs are shifted. As a result, the height of the girders and crossbeams are offset and the height of the stacked skid laminate can be halved than if the girders and crossbeam heights were not offset.
(2) Since the phase shift of the stringer and the phase shift of the cross girder are separated, a simple configuration device (a stringer phase shift skid stacking device, a cross girder phase shift skid pair stacking device for each of the stringer and cross girder) ) can accurately shift the phase. If we consider a device that alternately stacks skids in the standard orientation and skids in the inverted orientation, each vertically adjacent skid shifts the phase of the girder and the phase of the transverse girder by one, and stacks the girder-to-girder and cross-girder phases. The girders must be stacked without overlapping each other, which complicates the construction and control of the device.
(3) In a skid stack in which a skid in a standard position and a skid in an inverted position are stacked, the vertical girders and cross girders of vertically adjacent skids are out of phase, and the upper and lower vertical girders and cross girders are assembled in the same horizontal plane, the height is reduced by half, and the packing style is stabilized.

(a) is a perspective view of a skid in a standard posture, and (b) is a perspective view of a skid in an inverted posture. The skids in the standard posture are shown in white, and the skids in the inverted posture are shown in dots. The inverted skid is not painted in a dot pattern. 1 is a schematic plan view of a skid stacking system according to an embodiment of the present invention; FIG. FIG. 3 is a plan view showing the skid reversing device partially enlarging FIG. 2 , (a) showing a state before the skid in the standard posture is conveyed to the reversing device, and (b) showing the skid in the standard posture in the reversing device; is transported. 3(a) is an explanatory view showing the operation of the reversing device, (a) is a view taken along line IV-IV in FIG. 3(b), (b) is an explanatory view showing the process following (a), (c) is (b ) is an explanatory view showing the process following ). (d) is an explanatory diagram showing the process following FIG. 4(c), (e) is an explanatory diagram showing the process following (d), and (f) is an explanatory diagram showing the process following (e). FIG. 3 is a plan view showing the outline of the stringer phase-shifted skid lapping device partially enlarging FIG. indicates the state of the (b2) is a side view of (b1). FIG. 7 is a plan view showing a state in which a skid in an inverted posture is conveyed to the stringer phase-shifting skid stacking device of FIG. skid in position. (d2) is a side view of (d1). 7(d1) and 7(d2); FIG. 7(d1) is an explanatory view showing the process following FIG. 7(d2), (e1) is a plan view showing a state in which the skid in the normal posture is superimposed on the skid in the inverted posture, and (e2) is (e1). (f1) is a plan view showing a step following (e1), and (f2) is a side view of (f1). (a) is a perspective view of the skid pair obtained by FIGS. 8(f1) and 8(f2), and (b) is a perspective view of a shifted skid pair in which the phases of the cross beams of the skid pair are shifted. (a1) is a plan view of a skid pair conveyed from the longitudinal girder phase-shifted skid stacking device to the transverse girder phase-shifted skid pair stacking device, (a2) is a side view thereof, and (b1) is a partially enlarged view of FIG. FIG. 2B is a plan view of a shifted skid pair in which the phases of the cross beams are shifted by a cross girder phase-shifted skid pair overlapping device, and (b2) is a side view thereof. FIG. 4 is a side view showing the operation of the cross-beam phase-shifted skid pair overlapping device, (a) a side view showing a state in which the shifted skid pair is placed on the lifter, and (b) a side view showing a process following (a). FIG. (c) is a side view showing a step following (b). (d) is a side view showing a step following FIG. 11(c), (e) is a side view showing a step following (d), and (f) is a side view showing a step following (e).

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are given the same reference numerals to omit redundant description, and elements that are not directly related to the present invention are omitted from the drawings. do.

(Overview of skid stacking system)
A skid stacking system according to an embodiment of the present invention comprises a plurality of transverse girders 2 perpendicular to the top surface of a plurality of spaced parallel girders 1, as shown in FIG. 1(a). and a skid S2 in a standard posture, which is flipped upside down so that the vertical girder 1 is on top and the horizontal girder 2 is on the bottom, as shown in FIG. 1(b). , the phases of the longitudinal girders 1 are shifted and the phases of the transverse girders 2 are shifted to construct a skid stack that is alternately stacked.

FIG. 2 shows a plan view showing an overview of the skid stacking system X according to the present embodiment. This skid stacking system X includes a skid assembly device 3 that assembles the skid S1 in the standard posture, a skid reversing device 4 that vertically inverts the skid S1 in the standard posture, a skid S2 in the reverse posture, and a skid S1 in the standard posture vertically. A stringer phase-shifting skid stacking device 5 for forming a skid pair by stacking the girder 1 with a phase shift, and a shift skid for shifting the phase of the transverse beams 2 of the skid S1 in the standard posture and the skid S2 in the reverse posture, which constitute the skid pair. It is provided with a cross girder moving shifted skid pair stacking device 6 for constructing pairs and stacking the shifted skid pairs to form skid laminates. Each device 3, 4, 5, 6 will be described below.

(Skid assembly device 3)
As shown in FIG. 2, the skid assembling device 3 includes a stringer conveyor on which three stringers 1 are placed and conveys them in the longitudinal direction, and a stringer 1 arranged perpendicular to the stringer conveyor. A horizontal girder stocker 7 in which a plurality of horizontal girders 2 placed on the upper surface are vertically stacked, and nailing for fixing the horizontal girder 2 placed on the upper surface of the vertical girder 1 from the horizontal girder stocker 7 to the vertical girder 1. machine 8.

As shown in FIG. 2, the three girders 1 are moved by the girders conveyor for a predetermined distance, and the three girders 2 supplied from the girders stocker 7 are laid over the upper surfaces of the girders 1 at predetermined intervals. and each cross beam 2 is fixed to the upper surface of the vertical beam 1 by a nailing machine 8 with screw nails. The number of longitudinal girders 1 and horizontal girders 2 is not limited to three, and may be two or more. The skid S1 in the standard posture thus assembled is conveyed to the skid reversing device 4 by a roller conveyor.

(Skid reversing device 4)
3(a) and 3(b) are plan views of the skid reversing device 4 partially enlarged from FIG. The state before the skid S1 in the standard posture reaches the skid reversing device 4 is shown, and FIG. The skid S1 in the standard posture is transported with the stringer 1 placed on the rollers 9a of the roller conveyor 9, and is stopped when it reaches the skid reversing device 4. As shown in FIG.

As shown in FIG. 4A, which is a view taken along line IV-IV of FIG. Equipped with a reversing fork 10 to be moved, a reversing receiving member 11 extending obliquely upward from the vicinity of the rotation center A of the reversing fork 10, and a conveying conveyor 12 disposed between rollers 9a so as to be able to move up and down. there is A process of vertically inverting the skid S1 in the standard posture to form the skid S2 in the inverted posture by the skid reversing device 4 will be described.

As shown in FIG. 4( a ), a skid S1 (vertical girder 1 at the bottom and horizontal girder 2 at the top) in a standard posture carried on the rollers 9 a of the roller conveyor 9 and transported from the skid assembly device 3 is the skid It is stopped at a position above the reversing forks 10 of the reversing device 4 . As shown in FIG. 4(b), the transport conveyor 12 is lifted, and the skid S1 in the standard posture is lifted onto the transport conveyor 12 with the stringer 1 separated from the rollers 9a. As shown in FIG. 4(c), the reversing fork 10 is rotated upward about the center of rotation A, and the skid S1 in the standard posture is tilted with the longitudinal girder 1 resting on the reversing fork 10, and the lower part (The vertical beam 1a on the right end in the figure) is in a state supported by the transport conveyor 12. As shown in FIG.

As shown in FIG. 5( d ), the reversing fork 10 is further rotated, and the skid S 1 in the standard posture placed on the reversing fork 10 separates from the reversing fork 10 at around 90 degrees and moves to the reversing receiving member 11 . be handed over. The skid S1 is in a state in which the upper longitudinal beam 1b is supported by the reversal receiving member 11 and the lower longitudinal beam 1a is supported by the transport conveyor 12. As shown in FIG. As shown in FIG. 5(e), when the reversing fork 10 is subsequently rotated in the opposite direction, the skid S1 transferred to the reversing receiving member 11 moves to the lower vertical girder supported by the conveying conveyor 12. As shown in FIG. While 1a is held by the reversing fork 10, it slides down from the reversing receiving member 11 according to the rotation of the reversing fork 10.例文帳に追加The sliding down speed can be adjusted according to the rotation speed of the reversing fork 10, and the rotating speed of the reversing fork 10 is controlled so that the shock generated in the skid S1 that slides down is minimized. As shown in FIG. 5(f), when the reversing fork 10 is further rotated in the opposite direction to a horizontal state (state shown in FIG. 4(a)), the skid S1 completely slides down from the reversing receiving member 11, The skid S2 is in an inverted posture (the vertical girder 1 is on top and the horizontal girder 2 is on the bottom) and is placed on the transport conveyor 12 . In the skid S2 in this inverted posture, the vertical beam 1 is supported by the transport conveyor 12, and the horizontal beam 2 is positioned between the rollers 9a of the roller conveyor 9 (see FIG. 3(b)).

4(a), 4(b), 4(c), 5(d), 5(e), and 5(f) for explaining the reversing process, The skid reversing device 4 shown in 3(b) does not reverse all the skids S1 in the standard posture conveyed from the skid assembly device 3 and conveys them to the stringer phase shift skid stacking device 5 shown in FIG. It is reversed alternately and conveyed to the stringer phase shift skid stacking device 5 . That is, the skid reversing device 4 has a function of conveying the skid S1 in the standard posture as it is to the stringer phase-shifting skid stacking device 5 and a function of reversing it and conveying it to the stringer phase-shifting skid stacking device 5. . More specifically, as shown in FIG. 3(b), the skid S1 conveyed to the skid reversing device 4 in the standard posture is transferred to the conveyer conveyor 12 in the state shown in FIG. 4(b). By activating the skid, it is transported to the stringer phase shift skid stacking device 5 in the standard posture, and the even-numbered skid transported in the state shown in FIG. It is conveyed to the stringer out-of-phase skid laying device 5 .

(Vertical girder phase shift skid stacking device 5)
FIG. 2 and FIG. 6(a), which is a partially enlarged view thereof, show an outline of the stringer phase shift skid stacking device 5. As shown in FIG. The stringer phase shifting skid stacking device 5 temporarily lifts the skid S1 in the standard posture as shown in FIGS. When moving the skid S2 in the inverted posture, as shown in FIGS. The position of the skid S2 in the reversed posture is determined so that the stringer 1 is positioned, and the skid S1 in the standard posture is lowered onto the skid S2 in the reversed posture, as shown in FIGS. It is a device for forming the skid pair SP shown in a).

(Skid conveyor 13)
The stringer phase shift skid stacking device 5 moves the skid S1 in the standard posture in a direction perpendicular to the stringer 1 as shown in FIGS. As shown in FIG. 7(d1), there is a skid conveyor 13 for moving the skid S2 in the inverted posture in a direction perpendicular to the stringer 1 thereof. The skid conveyor 13 alternately conveys the skid S1 in the standard posture and the skid S2 in the inverted posture, and has the same configuration as the transport conveyor 12 shown in FIGS. 3(a) and 3(b). That is, the skid conveyor 13 can move up and down (see the transport conveyor 12 in FIGS. 4(a) and 4(b)). These skids S1 and S2 are transported in the direction of arrow B (see FIGS. 6(a) and 7(c)) orthogonal to the stringer 1.

(First stopper pin, second stopper pin)
As shown in FIG. 6( a ), the stringer phase-shifting skid stacking device 5 has a first stopper pin 14 and a second stopper pin 15 which are provided so as to be retractable in the conveying path of the skid conveyor 13 . A pair of the first stopper pin 14 and the second stopper pin 15 are arranged at intervals in a direction perpendicular to the conveying path of the skid conveyor 13 . In FIGS. 6 to 8, the first stopper pin 14 and the second stopper pin 15 are shown in a protruding state, and white ones are in a recessed state.

As shown in FIG. 6(a), the first stopper pin 14 is arranged in the conveying path of the skid conveyor 13, and allows the passage of the skid S1 in the standard posture and the skid S2 in the reverse posture when the skid conveyor 13 is immersed. As shown in FIG. 6(b1), at the time of projection, the vertical beam 1 of the skid S1 in the standard posture being conveyed by the skid conveyor 13 is brought into contact with the vertical beam 1 of the skid S1 in the standard posture to a predetermined position. stipulate.

As shown in FIG. 7(c), the second stopper pin 15 is shifted forward in the conveying direction of the conveying path of the skid conveyor 13 with respect to the first stopper pin 14, and is separated from the first stopper pin 14 by a distance L. They are separated from each other so that they can freely appear and disappear. The second stopper pin 15 permits the passage of the skid S1 in the standard posture and the skid S2 in the reversed posture when retracted, and as shown in FIG. , and position the stringer 1 of the skid S2 in the inverted posture between the stringers 1 of the skid S1 in the standard posture as viewed from above (see FIG. 7 (d2)) . The distance L between the first stopper pin 14 and the second stopper pin 15 is thus set so that the beams 1 of both skids S1 and S2 are out of phase.

(lifting and lowering claw)
As shown in FIGS. 6(b1) and 6(b2), the stringer phase shifting skid stacking device 5 lifts the skid S1 in the standard posture positioned at a predetermined position by the first stopper pin 14, and lifts the standard skid S1. As shown in FIGS. 7(d1) and 7(d2), the skid S1 in the posture is lowered so as to overlap the skid S2 in the inverted posture positioned by the second stopper pin 15 (see FIG. 7(d1) and FIG. 7(d2)). 8 (e1), see FIG. 8 (e2)) has a lifting and lowering claw 16.

As shown in FIG. 6(b1), the lifting and lowering claws 16 are composed of four pillars 16a arranged so as to surround the four sides of the skid S1 in the standard posture when viewed from above, and four pillars 16a extending from the lower ends of the pillars 16a. and a claw portion 16b extending horizontally toward the skid S1 in the standard posture. The column portion 16a is movable in the horizontal plane along the longitudinal direction of the skid conveyor 13, and is also vertically movable. The lifting/lowering claw 16 lowers the column portion 16a so that the claw portion 16b is positioned lower than the stringer 1 of the skid S1 in the standard posture supported by the skid conveyor 13, and the column portion 16a is the longitudinal direction of the skid conveyor 13. By moving the claw portion 16b closer to the stringer 1 along the direction to position it below the stringer 1 and raising the column portion 16a, as shown in FIG. Supporting stringer 1, skid S1 in normal position is lifted from skid conveyor 13.

As shown in FIGS. 7(d1) and 7(d2), the lifting/lowering pawl 16 moves the lifted skid S1 in the standard posture to the skid in the inverted posture positioned by the second stopper pin 15 below the skid S1. Lower so that it overlaps on S2. As a result, as shown in FIGS. 8(e1) and 8(e2), the skid S1 in the standard posture is superimposed on the skid S2 in the reverse posture with the beams 1 of both skids 1 out of phase. The lifting and lowering claws 16 are then moved away from the skids S1, S2 so as not to interfere with the superimposed skids S1, S2. The skid S2 in the inverted posture and the skid S1 in the standard posture thus superimposed are separated by the third stopper pin 17 and the skid conveyor 13, which will be described below, as shown in FIGS. 8(f1) and 8(f2). are in contact with each other, forming a skid pair SP shown in FIG. 9(a).

(Third stopper pin 17)
As shown in FIGS. 8( e 1 ) and 8 ( f 1 ), the stringer phase-shifting skid stacking device 5 provides the transport path of the skid conveyor 13 with the skid conveyor 13 more than the first stopper pin 14 and the second stopper pin 15 . The third stopper pin 17 is positioned forward in the conveying direction (forward of the arrow B) and provided so as to be retractable. A pair of the third stopper pins 17 are arranged at intervals in a direction perpendicular to the conveying path of the skid conveyor 13. The black one represents the protruding state, and the white one represents the recessed state. .

The third stopper pin 17 allows the passage of the skid S1 in the standard posture and the skid S2 in the inverted posture when it is retracted, and when it is protruding, as shown in FIGS. When the skid S1 in the standard posture and the skid S2 in the reverse posture, which are separated from each other, are conveyed in the direction of the arrow B by the skid conveyor 13, as shown in FIG. to restrict the movement of the skid S1 in the standard posture and allow the movement of only the skid S2 in the reverse posture. As a result, the stringer 1 of the skid S2 in the inverted posture is pressed against the stringer 1 of the skid S1 in the normal posture, forming the skid pair SP shown in FIG. 9(a). In this skid pair SP, both cross beams 2 are shifted in phase by a cross girder phase shift skid pair overlapping device 6, which will be described below, to form a shifted skid pair ZSP shown in FIG. 9(b).

(Cross girder phase shift skid pair stacking device 6)
FIG. 2 and FIG. 10(b1), which is a partially enlarged view thereof, show an outline of the cross girder phase-shifted skid pair overlapping device 6. As shown in FIG. As shown in FIG. 10( a 1 ), the cross girder phase shift skid pair overlapping device 6 , as shown in FIG. As shown in FIG. 10(b1), a shifted skid pair ZSP is constructed by shifting the phase of the cross beam 2 of the skid S2 in the inverted posture with respect to the cross beam 2 of the skid S1 in the standard posture as viewed from above. 11(a) and 11(b), the cross girder phase-shifted skid pair stacking device 6 temporarily lifts the phase-shifted skid pair ZSP and lowers it as shown in FIG. 11(c). Similarly, a new shifted skid pair NZSP is constructed by shifting the phase of the cross beam 2, and as shown in FIGS. A skid laminate 18 is formed by stacking the shifted skid pairs ZSP.

(Skid pair conveyor 19)
As shown in FIGS. 2, 10(a1) and 10(a2), the cross girder phase-shifted skid pair overlapping device 6 has a skid pair conveyor 19 that conveys the skid pair SP in the direction along the girder 1. have. As shown in FIG. 2, the skid pair conveyor 19 includes a first skid pair conveyor 19a arranged orthogonally between a pair of skid conveyors 13 in the stringer phase shift skid stacking device 5, and a horizontal skid pair conveyor 19a connected thereto. A second skid pair conveyor 19b arranged toward the girder phase shifting skid pair overlapping device 6 and a third skid pair conveyor 19c arranged up to the cross girder phase shifting skid pair overlapping device 6 connected thereto are provided. These first, second, and third skid pair conveyors 19a, 19b, and 19c have the same configuration as the skid conveyor 13 described above, and as shown in FIGS. 10(a1) and 10(a2), The horizontal girder 2 of the inverted skid S2 constituting the skid pair SP is supported, and the skid pair SP is moved along the vertical girder 1 to the uneven contact members 20 and 21 shown in FIGS. transport.

(Uneven contact members 20 and 21)
As shown in FIGS. 2 and 10(b1), the cross girder phase-shifting skid pair stacking device 6 is provided so as to be retractable in the conveying path of the third skid pair conveyor 19c, and allows the passage of the skid pair SP when it is retracted. , at the end of the stringer 1 of the skid S1 in the standard posture and the end of the stringer 1 of the skid S2 in the reverse posture, which constitute the skid pair SP at the time of projection, and positioned forward and backward in the conveying direction of the skid pair conveyors S1 and S2. It has stepped abutment members 20 and 21 that abut against each other. As shown in FIG. 10(b1), the stepped contact member 20 on the right side of the skid pair SP in the conveying direction is composed of a stepped claw 20a movable in the horizontal direction so as to be perpendicular to the third skid pair conveyor 19c, The stepped contact member 21 on the left side of the skid pair transport direction is composed of a stepped pole 21b erected on a stepped bracket 21a rotatable about a vertical axis.

As shown in FIG. 10(b1), the uneven pawl 20a is protruded into the conveying path of the third skid pair conveyor 19c, and the uneven bracket 21a is rotated clockwise so that the uneven pole 21b is projected onto the conveying path of the third skid pair conveyor 19c. When the skid pair SP shown in FIG. 10(a1) is conveyed by the third skid pair conveyor 19c in the state of protruding to the top, the third skid pair conveyor 19c attaches to the uneven pawl 20a and the uneven pole 21b projecting into the conveying path. The end of the stringer 1 of the skid S1 in the standard posture and the end of the stringer 1 of the skid S2 in the inverted posture, which constitute the skid pair SP being transported, abut. As a result, in the skid pair SP conveyed by the third skid pair conveyor 19c, the skid S1 in the standard posture and the skid S2 in the reverse posture are relatively moved along the stringer 1, and the skid S1 in the standard posture moves laterally. The phase of the transverse girder 2 of the skid S2 in the inverted attitude with respect to the girder 2 is shifted, resulting in a shifted skid pair ZSP.

(lifter 22)
As shown in FIGS. 11(a) and 11(b), the cross girder phase-shifted skid pair stacking device 6 comprises a lifter 22 for lifting the staggered skid pairs ZSP. The lifter 22 has a lifting plate 22a arranged between the third skid pair conveyors 19c, as shown in FIG. The offset skid pair ZSP supported by the conveyor 19c is lifted by raising the lifting plate 22a. The lifting height of the shifted skid pair ZSP by the lifter 22 is such that the lower surface of the stringer 1 of the lifted shifted skid pair ZSP is higher than the holding claws 23 described below.

(Holding claw 23)
As shown in FIGS. 10(b1) and 11(b), the cross girder phase-shifted skid pair stacking device 6 is horizontally retractable to the left and right of the lifter 22 to support the shifted skid pair ZSP lifted by the lifter 22. It has holding claws 23 provided on the . As shown in FIG. 10(b1), four holding claws 23 are arranged so as to surround the four outer sides of the shifted skid pair ZSP when viewed from above, and each of them protrudes inward without changing the height. It is free. As shown in FIG. 11(b), the height of the holding claws 23 is as shown in FIG. 11(c), a new shifted skid pair NZSP is placed under the shifted skid pair ZSP supported by the holding claws 23 on the third skid pair conveyor 19c (see FIGS. 10(b1) and 10(b2)). ) is placed at a height where space for carrying it in can be secured.

(Activation of lifter 22 and holding claw 23)
The operation of the lifter 22 and the holding claws 23 shown in FIG. 10(b1) will be described. As shown in FIGS. 10(b1) and 10(b2), the shifting skid pair ZSP is lifted by the lifting plate 22a of the lifter 22 shown in FIG. As shown in FIG. 11B, it is lifted and supported by the holding claws 23 by projecting the holding claws 23 . As shown in FIG. 11(c), below the shifted skid pair ZSP supported by the holding claws 23, a new horizontal beam 2 is shifted in phase by the stepped abutment members 20 and 21 shown in FIG. 10(b1). A staggered skid pair NZSP is constructed.

As shown in FIG. 12(d), the new shifted skid pair NZSP is lifted by the lifter 22 and pressed against the shifted skid pair ZSP supported by the holding claws 23 to form the shifted skid pair ZSP and the new shifted skid pair. While the weight of the NZSP is supported by the lifter 22, the holding claws 23 supporting the shifted skid pair ZSP are immersed and supported by the holding claws 23 to transfer the weight of the mischievous skid pair ZSP to the lifter 22.例文帳に追加The shifted skid pair ZSP and the new shifted skid pair ZSP thus superimposed form the skid stack 18 .

As shown in FIG. 12(e), the lifter 22 further lifts the skid laminate 18 composed of the shifted skid pair ZSP and the new shifted skid pair NZSP, and the lower surface of the stringer 1 of the new shifted skid pair NZSP is in the immersed state. When it is slightly above the holding claws 23, lifting by the lifter 22 is stopped, the holding claws 23 are projected, and the lifter 22 is slightly lowered. As a result, the weight of the skid stack 18 composed of the vertically stacked shifted skid pair ZSP and the new shifted skid pair NZSP is supported by the holding claws 23 . After that, as shown in FIG. 12(f), the lifter 22 is lowered to the reference position.

After that, by repeating this process, a skid laminate 18 in which a plurality of skids in the standard posture and skids S2 in the S1 reverse posture are stacked with the phases of the vertical beams 1 and horizontal beams 2 shifted, is shown in FIG. 12(f). 2 is held one after another by the holding claws 23 shown in FIG.

In this way, after a skid laminate 18 in which a predetermined number (for example, 10 stages) of skids S1 and S2 are alternately stacked on the holding claws 23 is constructed, the lifter 22 shown in FIG. With the weight of the laminate 18 supported by the lifter 22, the holding claws 23 are retracted, and the lifter 22 is lowered to support the skid laminate 18 on the third skid pair conveyor 19c shown in FIG. 10(b1). After that, the stepped members 20 and 21 (stepped claw 20a and stepped bracket 21a) shown in FIG. 10(b1) are withdrawn from the conveying path of the third skid pair conveyor 19c, and the skid laminate 18 is moved by the third skid conveyor 19c as shown in FIG. , to the left in FIG. 10(b1). The skid laminate 18 thus transported to the left of the cross beam phase-shifted skid pair stacking device 6 is finally transported to a desired location by a forklift (not shown).

(action/effect)
According to the skid stacking system X according to one embodiment of the present invention, the following functions and effects can be exhibited.

As shown in FIGS. 6 to 8, by overlapping the skid S2 in the inverted posture and the skid S1 in the standard posture by the stringer phase shift skid stacking device 5, the phase of the stringer 1 of the vertically adjacent skids S1 and S2 can be adjusted. becomes a shifted skid pair SP (see FIG. 9(a)), and as shown in FIGS. This results in a skid stack 18 in which the beams 2 of the skid pair SP are out of phase. As a result, the resulting skid laminate 18 has a height offset of stringer 1 and cross 2, compared to the stacked skid laminate 18 when the height of stringer 1 and cross 2 are not offset. height can be halved.

In this way, when the skid S1 in the standard posture and the skid S2 in the inverted posture are superimposed, the phase shift of the stringer 1 and the phase shift of the horizontal stringer 2 are separated. The phase shift can be accurately performed by a device having such a configuration (the longitudinal girder phase-shifting skid stacking device 5 and the transverse girder phase-shifting skid pair stacking device 6). Assuming that the skids S1 in the standard posture and the skids S2 in the inverted posture are alternately stacked one by one, the phase of the stringer 1 and the phase of the transverse girder 2 are respectively calculated for each of the vertically adjacent skids S1 and S2. It is necessary to shift the vertical girders 1 and stack the horizontal girders 2 so that they do not overlap each other, which makes the configuration and control of the device more complicated than in the present embodiment.

Further, as shown in FIG. 12(f), the skid laminate 18 in which the skid S1 in the standard posture and the skid S2 in the reverse posture are stacked has the vertical beams 1 and the horizontal beams 2 of the vertically adjacent skids S1 and S2. are out of phase, and the upper and lower vertical girders 1 and horizontal girders 2 are combined (engaged) in the same horizontal plane. Stabilizes the load.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is of course not limited to the above-described embodiments, and various modifications within the scope of the claims can be made. It goes without saying that examples or modifications are also within the technical scope of the present invention.

INDUSTRIAL APPLICABILITY The present invention can be used in a skid stacking system for compactly stacking a plurality of skids on which loads are placed when transporting loads in a factory or the like in an empty state.

1 Stringer 2 Cross-beam 3 Skid assembly device 4 Skid reversing device 5 Stringer phase-shifting skid stacking device 6 Cross-beam phase-shifting skid pair stacking device 13 Skid conveyor 14 First stopper pin 15 Second stopper pin 16 Lifting and lowering claw 17 Second 3 Stopper pin 18 Skid laminate 19 Skid pair conveyor 20 Uneven contact member 21 Uneven contact member 22 Lifter 23 Holding claw S1 Skid in standard posture S2 Skid in reverse posture SP Skid pair ZSP Shifted skid pair NZSP New shifted skid pair X skid stacking system

Claims (7)

A skid in a standard posture in which a plurality of horizontal girders are mounted perpendicularly on the upper surfaces of a plurality of longitudinal girders arranged in parallel at intervals; 1. A system for building a skid stack in which crossbeams are alternately stacked with inverted skids underneath, comprising:
When the skid in the standard posture is once lifted and the skid in the inverted posture is moved below it, the stringers of the skid in the reverse posture are positioned between the stringers of the skid in the standard posture as viewed from above. a stringer phase shift skid stacking device for determining the position of the skid in the reversed posture and lowering the skid in the standard posture onto the skid in the reversed posture to form a skid pair;
The skid in the normal posture and the skid in the reversed posture, which constitute the skid pair, are moved relatively along their respective longitudinal girders, and the skid in the reversed posture with respect to the transverse girder of the skid in the standard posture as viewed from above. The phase of the cross beam is shifted to construct a shifted skid pair, the shifted skid pair is once lifted, and a new shifted skid pair is constructed in the same way by shifting the phase of the horizontal girder below it, and the new shifted skid pair a cross girder phase-shifted skid pair stacking device for stacking the shifted skid pair on the skid pair to form the skid laminate;
A skid stacking system comprising: The stringer out-of-phase skid stacking device comprises:
a skid conveyor that conveys the skid in the standard orientation and the skid in the inverted orientation in a direction orthogonal to the respective stringers;
The stringer of the skid in the standard posture which is provided on the conveying path of the skid conveyor so as to be retractable, allows the skid in the standard posture and the skid in the reverse posture to pass when it is retracted, and is carried by the skid conveyor when it is projected. a first stopper pin that abuts on and determines the position of the stringer of the skid in the standard posture to a predetermined position;
provided in the conveying path of the skid conveyor so as to be able to move in and out along the conveying path with respect to the first stopper pin, allowing the skid in the standard posture and the skid in the reverse posture to pass through when retracted, At the time of projection, the position of the stringer of the skid in the reversed posture is positioned between the stringers of the skid in the standard posture as viewed from above by contacting the stringer of the skid in the reversed posture conveyed by the skid conveyor. a second stopper pin that
The skid in the standard posture positioned at a predetermined position by the first stopper pin is lifted, and the lifted skid in the standard posture is placed below the skid in the inverted posture positioned by the second stopper pin. a lifting and lowering claw for lowering to form the skid pair;
The skid stacking system of claim 1, comprising: The stringer out-of-phase skid stacking device comprises:
A third stopper pin is provided in the conveying path of the skid conveyor and is located forward in the conveying direction of the skid conveyor relative to the first stopper pin and the second stopper pin and is provided so as to be retractable,
The third stopper pin permits passage of the skid in the standard posture and the skid in the inverted posture during retraction, and the standard posture constituting the skid pair when the skid pair is conveyed by the skid conveyor during projection. By restricting the movement of the skid in the standard posture by contacting the stringer of the skid in the above, and allowing the movement of only the skid in the reverse posture, the stringer of the skid in the reverse posture is replaced by the stringer of the skid in the standard posture 3. A skid stacking system according to claim 2, characterized in that it has a function of being pressed against. The cross girder phase-shifted skid pair lap-up device includes:
a skid pair conveyor that conveys the skid pair in a direction along its stringer;
The ends of the longitudinal girders of the skid in the standard posture and the skid in the inverted posture, which are provided in the conveying path of the skid pair conveyor so as to be retractable, allow the passage of the skid pair when retracted, and constitute the skid pair when projected. a stepped abutting member that abuts on the end of the longitudinal beam of the skid pair conveyor with different positions in the front and back in the conveying direction of the skid pair conveyor,
By abutting the ends of the vertical girders of the skid in the standard posture and the ends of the vertical girders of the skid in the inverted posture, which constitute the skid pair, to the uneven abutment members, the horizontal girders of the skid in the standard posture 4. A skid stacking system according to any one of claims 1 to 3, characterized in that the skid girders in the inverted attitude are out of phase with the inverted skid girders to form the offset skid pair. The cross girder phase-shifted skid pair lap-up device includes:
a lifter for lifting the offset skid pair;
holding claws provided on the left and right sides of the lifter so as to be able to retract horizontally in order to support the shift skid pair lifted by the lifter;
constructing a new shifted skid pair in which the phases of the horizontal girders are shifted by the uneven contact members below the shifted skid pair supported by the held claws by protruding the holding claws;
This new shifted skid pair is lifted by the lifter and pressed against the shifted skid pair supported by the holding claws, and the weight of the shifted skid pair and the new shifted skid pair is supported by the lifter. and retracting the holding claws supporting the shift skid pair,
The shifting skid pair and the new shifting skid pair are further lifted by the lifter to protrude the holding claws below the new shifting skid pair, and the shifting skid pair and the new shifting skid pair are vertically superimposed. 5. A skid stacking system according to claim 4, wherein the weight of said skid stack consisting of: is supported by said retaining claws. A skid reversing device for vertically reversing the skid in the standard posture into the skid in the reverse posture is arranged at a position of the preceding process of the stringer phase shift skid stacking device,
The skid reversing device has a function of sending the skid in the standard posture to the stringer phase-shifted skid stacking device without reversing it, and a function of reversing the skid in the standard posture to make the skid in the reversed posture the stringer phase-shifted skid. and a function of feeding the skids to the lapping device, wherein the skids in the standard posture and the skids in the inverted posture are alternately fed to the stringer phase shift skid lapping device. A skid stacking system according to any one of the preceding claims. A skid assembling device for assembling the skid in the standard posture from the vertical beams and the horizontal beams is arranged at the position of the preceding process of the skid reversing device, and the skid in the standard posture assembled by the skid assembling device is arranged. 7. A skid stacking system according to claim 6, delivered to said skid inverter.

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