JPS5930873B2 - Pallet parking row changing device in horizontal circulation parking equipment - Google Patents

Description

[Detailed Description of the Invention] Conventionally, a plurality of vehicle loading pallets are arranged on a moving path consisting of two vertical and horizontal rows arranged in a corner or rectangular shape so that two opposite corners are empty spaces when stopped.・As a horizontal circulation type parking facility that alternately moves and circulates one horizontal pitch, as shown in Japanese Utility Model Publication No. 43-15059, horizontal movement of the pallet is provided on the pallet by the engagement of a pin rack and a pin gear. In some cases, fixed wheels are guided on rails fixed to the floor surface, and vertical movement is carried out by mounting a moving rail having the same length as the width of the pallet on a conveyor that circulates and drives the pallet.

This conveyor for vertical movement must support the weight of the pallet plus the vehicle, so separate guide rollers, sturdy guide members, etc. are required, making it expensive.

In addition, there is one in which the vertical transfer rail that connects both ends of the two rows of horizontal transfer rails that are in operation can be raised and lowered, and the pallet side is equipped with wheels for horizontal transfer and vertical transfer.

In this case, all pallets must be equipped with wheels exclusively for horizontal and vertical transportation, and a lifting device for vertical transportation rails is required, resulting in an extremely high cost.

Furthermore, in any of the above-mentioned configurations, when changing the transfer direction, both the vertical and horizontal transfer operations must be temporarily stopped before proceeding to the next operation, which has the disadvantage that the time required for circular movement becomes longer.

In view of the above-mentioned current situation, the present invention provides a free wheel on each pallet and arranges a cross-shaped rotating rail at a part perpendicular to the rails, and simultaneously transfers the free wheels onto the cross-shaped rotating rail and transfers the pallet vertically and horizontally. By driving the operation redundantly, the cross-shaped rotating rail is rotated through the free wheel, and the pallet parking row can be changed without changing the pallet orientation, and the circulation time can be shortened by driving the continuous transfer device. 9. Furthermore, the purpose of the conveying means is to provide a parking facility that is inexpensive as a whole by having a simple configuration that merely involves towing.

To elaborate on the embodiments in the figures, Ia, lb, 2a, 2b
4 indicates the horizontal and vertical transfer rails la, two rails for each horizontal transfer and two vertical transfer rails arranged on the floor surface 3 in parallel along the horizontal and vertical transfer paths.

A set of four cross-shaped rotating rails are arranged at the orthogonal portions of lb, 2a, and 2b, and 5 is an intermediate rail arranged between the vertical cross-shaped rotating rails 4 and 4.

As shown in FIGS. 4 and 5, the cross-shaped rotating rail 4 includes a fixed base plate 6 having a bearing portion, a shaft 8 which is pivotally connected to the fixed base plate 6, and a stepped rotary plate 7 is fixed to the upper part, It consists of a dot rail 9 provided at the center on the plate γ and four short rails 10 fixedly arranged in a cross shape on all sides beyond the stepped portion at appropriate intervals.

Reference numeral 11 denotes vehicle loading pallets that are arranged diagonally in succession at the end of the horizontal parking row to form one empty space. Four flanged free wheels 12 are arranged in line with this.

The height of the flange of the wheel 12 is such that when the wheel reaches the inside of the short rail 10, the outer periphery of the flange comes into contact with the upper surface of the stepped rotary plate 7, and the inner end of each of the short rails 10 The distance between the point rail 9 and the point rail 9 is set to be slightly wider than the thickness of the flange so as not to obstruct passage of the wheel 12.

Reference numerals 13a and 13b are endless chains for lateral transfer for lateral movement of the pallet 11, which are installed in parallel in two rows in each of two parallel lateral transfer paths by means of two sprockets 14 each arranged at both ends. A plurality of rollers 15 are fixedly arranged at a predetermined equal pitch, and a forward/reverse motor (not shown) provided on one side of the sprocket 14 causes the endless chains 13a and 13b to move in opposite directions to one pitch of the rollers 15. This is like intermittent driving.

Reference numerals 16a and 16b are vertical transfer endless chains for vertically moving the pallet 11, and these chains are installed parallel to each of the two parallel vertical transfer paths using two sprockets 17 each arranged at both ends. At the same time, a plurality of rollers 18 are fixedly arranged at a predetermined equal pitch, and a forward/reverse motor (not shown) provided on one side of the sprocket 17 causes the endless chains 16a and 16b to move in opposite directions and one of the rollers 18. This is like intermittent driving to the pitch.

The pallet 11 has U-shaped guide rails 19 on the lower surfaces of both sides in the horizontal direction, and U-shaped guide rails 2 on the lower surfaces of both sides in the vertical direction.
0 are fixed respectively, and one of the guide rails 19 is engaged with the rollers 15, 15, or the guide rail 2 is fixed.
0 and the roller 18, the pallet 11 is moved horizontally or vertically, respectively.

As shown in FIG. 5, each of the short rails 10 has a sloped notch at the end on the side of the point rail 9, and the wheel 12 has a flange supported on the upper surface of the stepped rotary plate 7 near the notch. This is to eliminate the impact caused by the gap between the point rail 9 and the short rail 10.

Further, the cross-shaped rotating rail 4 is configured by, for example, a ball pushed by a spring force and a semicircular hole so that the cross-shaped rotating rail 4 does not rotate when the free wheel 12 is not mounted on the short rail 10. It is locked by a notch type or an appropriate means using electromagnetic force, etc., and when the free wheel 12 rides on it and attempts to turn, the lock is easily released, allowing the cross-shaped rotating rail to rotate 40 times. It has been done,
This prevents the wheels 12 from derailing when transferring between rails.

Next, the effect will be explained.

Figure 3 shows a state in which the pallet 11, which has been vertically transferred during nine clockwise rotations, has reached the direction change position, and then is about to change direction to a horizontal row by horizontal transfer in addition to vertical transfer, and the state in which the pallet 11 is about to change direction to the horizontal row, and up and down. This shows a starting state in which the first pallet 11 in the horizontal row is about to change direction to the vertical column, and typically, FIG. This will be explained in detail.

First, the lateral transfer starts from the position shown in the diagram, and the pallet P moves a distance △l shorter than the lateral movement distance of one pitch.
The four wheels 12 each move onto the front short rail 10 of the cross-shaped rotating rail 4, resulting in a loss state.

At this time, the guide rail 19 and the rollers 15, 15 remain engaged, and the guide rail 20 and the roller 18 are newly engaged.

Next, as shown in Figure C, the endless chains 13a, 13 for horizontal transfer
Endless chain 16a for continuous driving and vertical transfer of b.

When the drive of the pants 16b starts, the pants) P moves in the direction that is the combination of the amount of movement of the horizontal transfer and the amount of movement of the vertical transfer, and along with this, the free wheel 12 also remains engaged with the short rail 10. While moving back and forth on the rail and rotating the cross-shaped rotating rail 4 in the direction of the arrow, it turns 90 degrees in the same trajectory as the movement trajectory of the pallet P, and at the turning position, the vertical transfer rail is turned as shown by the varnish. 2a and 2b form three straight lines.

As a result, the pallet P completes the transfer direction change, the endless chains 13a and 13b for horizontal transfer stop driving, and only the endless chains 16a and 16b for vertical transfer continue to drive, and the free wheel 12 moves from the short rail 10 vertically. The pallet P is transferred to the transfer rails 2a and 2b, and only vertical transfer is performed.

The direction change from vertical to horizontal transport of the pallet 11 is performed in exactly the same manner as +e for the horizontal transport described above, and in this way the pallet 11 is transferred to the endless chains 13a, 13b, 16a, 16b.
By repeating the drive of both endless chains for a predetermined period of time at the direction changing part, that is, the part orthogonal to the rails, the direction of only the free wheel 12 is changed while rotating the cross-shaped rotating rail 4 by 90 degrees. The next vertical or horizontal transfer is performed continuously, and the endless chains 13a, 13b for horizontal transfer and the endless chains 16a, 16b for vertical transfer, which sandwich these 40 rotations of the cross-shaped rotating rails, are driven alternately and partially overlappingly to achieve the purpose. This is to move the pallet 11 to a predetermined entry position.

Similarly, when stopping the transfer, the pallets 11 on the vertical transfer path are stopped at intermediate positions on both sides in the horizontal row intermediate entry type as shown in Figure 1, and in the corner side entry type, as shown in Figure 2. The column on the opposite entry side is stopped at an intermediate position, and on the entry side, from just before the vertical feed is completed, only the horizontal row on the entry side is moved one pitch in the opposite direction, or only the entry side is moved vertically. Depending on the direction of circulation, it is possible to select whether to perform lateral transfer by one extra pitch or not.

In addition to the endless chain as described above, the transportation means include a pin rack fixed to the side of the pallet 11 and a pin gear placed at an appropriate position on the floor 3 that engages with the bin rack. Palette 15
Others, such as those shown in Japanese Patent Publication No. 45-31024, by engaging a rotating crank with a roller at the tip and a guide rail provided on the underside of the pallet, or the above-mentioned endless chains, bin racks, and rotating cranks. It can be carried out by using any means such as a combination of the following.

Furthermore, if a concave transfer rail is used, there is no need to provide a space or a sloped portion near the center of the rotating rail, and the wheels may also be without flanges.

As detailed above, when using the present invention, the cross-shaped rotating rail is rotated by 90' by overlapping the vertical and horizontal transfers at the direction change part, and the free wheels of the pallet engaged on the rail are rotated by 90'. In order to easily change the traveling direction at right angles without rotating the pallet itself, the circulation movement time is approximately N△T to △T when the transfer is repeated N times, as shown in the diagram in Figure 8. (However, IN is one vertical or horizontal transfer, and △T is the overlap time of bidirectional transfer, that is, the direction change time.) Become a person.

Furthermore, since there is no need to provide a drive facility for the rotation stop on the cross-shaped rotating rail itself, costs can be reduced, and the device itself can be made smaller and simpler.

[Brief explanation of drawings]

Figures 1 and 2 are plan views of the transverse row middle entry type and corner side entry type, respectively, in a stopped state as an embodiment of the present invention, and Figure 3 shows the state in the middle of circulation of the one shown in Figures 1 and 2. Plan view, Fig. 4 is an enlarged view of the main part of Fig. 3, Fig. 5 is a view from arrow A to A in Fig. 4, Fig. 6 is an enlarged detailed view during direction change, and Fig. 7 is direction change operation. The explanatory diagram, FIG. 8, is a moving speed diagram. In the figure, 1a and lb are rails for horizontal transfer, 2a and 2b are rails for vertical transfer, 4 is a cross-shaped rotating rail, 5 is an intermediate rail, 11 is a pallet for mounting on a vehicle, 12 is a free wheel, and 13a
, 13b and 1fia, 16b are endless chains for horizontal and vertical transfer, 15.18 is a roller, and 19.20 is a guide rail.

Claims (1)

[Scope of Claims] 1. A plurality of vehicle loading pallets are arranged on a moving path consisting of two vertical and horizontal rows arranged in a corner or rectangular shape so that two opposite corners are empty spaces when stopped. In a device that alternately moves to one pitch and circulates, two rails and a pallet transfer means for each two are arranged in parallel in the vertical and horizontal movement paths, and rotatably arranged at orthogonal to the vertical and horizontal rails. It consists of a plurality of vehicle-mounted pallets having a set of four cross-shaped rotating rails and four free wheels that are guided in engagement with each of the rails and are movable by the pallet transfer means, - When the pallet is moved by one drive of the horizontal pallet transfer means and each of the free wheels is transferred onto each cross-shaped rotating rail, at the same time, the drive of the other side transfer means is started redundantly. Pallet parking in a horizontal circulation parking facility, characterized in that the cross-shaped rotating rail is rotated so that when the drive on the -blade side ends, the pallet that has reached the orthogonal part is moved to the other side on the movement path. Column change device. 2. The pallet transfer means V is movable by engagement between rollers arranged at a predetermined pitch on an endless chain that can be driven in circulation and guide rails fixed to both ends of the back surface of the pallet. Pallet parking row changing device in horizontal circulation parking equipment. 3. A pallet parking row in the horizontal circulation parking facility according to claim 1 or 2, wherein each of the pallet free wheels has its center of rotation aligned with the center of the set of four cross-shaped rotating rails. Change device.