JPH05272250A - Pallet shifter for elevator type parking apparatus - Google Patents

Abstract

PURPOSE:To simplify the structure of a shifter shifting a pallet between the elevating base and parking shelf of an elevator type parking apparatus. CONSTITUTION:A chain conveyor means is adopted for shifting a pallet 12, the shaft of the sprocket 22 of the chain conveyor means is made perpendicular while an arm 25 is projected to the outer circumference side from a chain 23, and an engaging roller 27 engaged with the pallet 12 is supported at the front end section of the arm 25. Accordingly, the engaging roller 27 draws an elliptical locus on a horizontal plane, and surrounds and moves on the outer circumference of the conveyor chain 23, and the transfer stroke of the pallet is lengthened without shifting pallet transfer means itself while lowering the bulk of the pallet transfer means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet transfer device for an elevator type parking device.

[0002]

2. Description of the Related Art An elevator-type parking system is provided with a lift for supporting and lifting a pallet on which a vehicle is placed, and a plurality of parking shelves for accommodating the vehicle with the pallet on one or both sides of a hoistway of the lift. Is generally known as a structure in which layers are arranged (multi-tiered) along the hoistway of the elevator, the elevator is connected to each parking rack, and pallets are transferred between the two.

As a pallet transfer device for such an elevator type parking apparatus, a pallet transfer means by a conveyor chain is provided on the lift table, and the pallet transfer means itself is supported on the lift table so as to be movable in the pallet transfer direction. There is known one (Japanese Patent Laid-Open No. 3-1940).
No. 72).

That is, in this one, the conveyor chain is wound around a pair of sprockets with their axes being horizontal, and the engagement pins are attached to the conveyor chain, while the engagement opened downward on the pallet. A recess is provided so that the engaging pin is fitted into the engaging recess by the orbiting movement of the conveyor chain from the return side to the carrier side, and the pallet is transferred by traveling on the carrier side. It is configured to be disengaged from the engagement concave portion by making a circular movement toward the return side at the terminal end portion. During the pallet transfer, the pallet transfer means itself is moved in the pallet transfer direction on the lift table.

As described above, the pallet transferring means itself is moved on the lift table by providing a certain gap between the lift table and the parking rack so as not to interfere with each other when the lift table is moved up and down. This is because That is, it is not possible to completely send the pallet from the elevator to the parking rack by moving the engaging pin on the elevator by traveling the chain, and even when transferring the pallet from the parking rack to the elevator. Since the engagement pin cannot be engaged with the pallet on the parking rack beyond the gap, the pallet transfer means itself is moved from above the lift table to above the parking rack.

[0006]

However, in the case of the pallet transfer device as described above, it is necessary to drive the conveyor chain of the pallet transfer means for transferring the pallet, and the pallet transfer means itself also moves. Therefore, there is a problem that the driving means has two systems, the structure becomes complicated, and the cost becomes high.

Further, as described above, since the conveyor chain is wound around the sprocket whose axis is horizontal and the engaging pin moves in an elliptical orbit on the vertical surface, the pallet transfer means itself is bulky up and down. There is a problem that it becomes a thing. That is, in the elevator type parking device, the lowest part of the hoistway is usually formed at the entrance of the vehicle to the elevator, but if the above-mentioned vertical dimension is large, it is lifted below the entrance of the vehicle. It is necessary to form a deep pit into which the lifting platform and the pallet transfer device are fitted so that the pallet on the platform is at the loading surface height. In addition, turn the vehicle 180 degrees in the pit.
When a turning device for reversing is installed, not only the pit becomes deeper, but also the lifting stroke of the turning table of the turning device increases corresponding to the vertical dimension of the pallet transfer device, which leads to an increase in size of the turning device. ..

[0008]

In order to solve the above-mentioned problems, the present invention supports an engaging element which engages with the pallet on the conveyor chain via an arm, so that the engaging element can move around the outer circumference of the conveyor chain. On the other hand, the conveyor chain is wound around a sprocket whose axis is vertical, and the engaging element is moved in an elliptical orbit on a horizontal plane to solve the problem. Is.

That is, the means for solving the above-mentioned problems are as follows: an elevating table that supports and elevates a pallet on which a vehicle is placed; and a plurality of layers arranged along the hoistway of the elevating table to accommodate the vehicle together with the pallet. A pallet transfer device for an elevator-type parking device, comprising a parking shelf, and connecting the elevators and the parking shelves to transfer pallets between the elevators, wherein the pallet transfer direction in the elevators A pair of sprockets provided with vertical axes at both ends, a conveyor chain wrapped around the sprockets for transferring the pallet between the lift and the parking rack, and the conveyor chain The base end of which is supported by the arm, and the tip end of which protrudes toward the outer peripheral side of the conveyor chain,
An engaging element provided at the tip of the arm and an end portion of the pallet in the pallet transfer direction, the engaging element is fitted by the circular movement from the return side of the conveyor chain to the carrier side and returned from the carrier side. It is characterized in that it is provided with an engaging concave portion which is disengaged by a circular movement toward the side.

[0010]

In the above solution means, since the engaging element which engages with the engaging concave portion of the pallet is provided at the tip of the arm projecting to the outer peripheral side of the conveyor chain, it is possible to circulate around the outer circumference of the conveyor chain. Therefore, the transfer stroke of the pallet becomes long corresponding to the protruding length of the arm.
Further, since the conveyor chain is arranged by being wound around a sprocket having a vertical axis, the engaging element moves along an elliptical orbit on a horizontal plane, and the pallet transfer means has a low bulk. Become.

[0011]

Therefore, according to the present invention, the conveyor chain is wound around the sprocket having the vertical axis, while the engaging element is supported by the conveyor chain through the arm. Draws an elliptical orbit on a horizontal plane, and moves around the outer circumference of the conveyor chain, so that the pallet transfer means itself can be moved without moving the pallet transfer means while moving the pallet transfer means itself. The pallet transfer device can be made longer, which is advantageous in reducing the vertical dimension of the pallet transfer device and simplifying the drive system, and the structure of the pallet transfer device can be simplified.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. <Regarding Overall Structure> In FIG. 1, reference numeral 1 denotes an entrance / exit opening that opens on the ground of the parking tower 2, and an elevator-type parking device 3 is provided in the parking tower 2. This parking device 3
Is equipped with a parking section 10 in which a large number of parking shelves 9 accommodating vehicles are arranged in layers along the hoistway 8 on both sides of a hoistway 8 provided with a vehicle lift 7. Below 10 is a loading / unloading section 11 for loading and unloading the vehicle. The loading / unloading port 1 is open to the loading / unloading section 11. As shown in FIG. 2, each parking rack 9 is composed of two rack rails 9a, 9a, and accommodates a vehicle mounted on a rectangular pallet 12 with wheels.

A turning device 20 for changing the direction of the vehicle is arranged in the pit 19 of the loading / unloading section 11.

<About Lifting Platform> The lifting platform 7 is, as shown in FIG. 2, a rectangular one having a through hole 7a at the center thereof through which the swivel of the swivel device 20 is raised and lowered, and its four corners. The parking section 1 is suspended by the connected wire rope 13.
The space from the topmost parking rack 9 of 0 to the loading / unloading section 11 can be moved up and down with a slight gap between each parking rack 9. That is, the wire rope 13 is suspended around a guide pulley 14 at the upper end of the hoistway 8 and a drive pulley 15 which is driven to rotate by a drive motor, and one end side is connected to the elevating table 7 and the other end side is connected to the balance weight 16. As the wire rope 13 travels, the lift base 7 can be moved to a predetermined connection position with the parking rack 9. Further, rails 7b and 7b similar to those of the parking rack 9 are also provided on the lift table 7 so as to movably support the pallet 12.

<About Pallet Transfer Device> As shown in FIG. 2, the pallet transfer for transferring the pallet 12 to the lift table 7 between the lift table 7 and the parking shelves 9, 9 on both sides of the hoistway. A device 21 is provided. Pallet transfer device 21
Is a pair of sprockets 22, 22 arranged on one side of the through hole 7a of the lifting table 7 and arranged at both ends of the lifting table 7 in the pallet transfer direction, and the sprockets 22, 22.
And an endless conveyor chain 23 wound around the conveyor chain 23, and an engaging element to be described later is supported by the conveyor chain 23 via an arm. In addition, each pallet 12 has engaging recesses 24, 24 with which the above-mentioned engaging elements engage.
Are arranged in point symmetry with respect to the center of pallet rotation. This point-symmetrical arrangement is one of the pallets 12 by the turning device 20.
This is in consideration of 80-degree inversion.

The detailed structure of the pallet transfer device 21 is shown in FIGS. -Sprocket and Conveyor Chain- The sprocket 22 has a rotating shaft 2 that rotates horizontally.
It is supported on the lifting table 7 with 2a being vertical. The conveyor chain 23 is composed of a roller chain in which a large number of roller links and pin links are alternately connected. In the case of this example, two sprocket wheels 22 are vertically arranged at each end of the lift table 7 in the pallet transfer direction and are supported by the same rotary shaft 22a. The conveyor chain 23 is also vertically
Book is provided.

-Engager-As shown in FIGS. 3 and 4, the engager is rotatably attached to two adjacent pins 23a, 23a of the conveyor chain 23 by a vertical support shaft 26 via arms 25, 25. It is constituted by the supported engagement roller 27.

That is, the above-mentioned arms 25, 25 are shown in FIG.
As shown in FIG.
Two pins 23a, 23 that are adjacent to each other with one pin 23a sandwiched therebetween
It is pivotally supported by a, and the tip portion thereof projects toward the outer peripheral side of the conveyor chain 23 and the tip portions are superposed on each other. Then, the vertical support shaft 26, as shown in FIG.
The upper and lower conveyor chains 23, 23 are rotatably supported by the tips of arms 25 each having a total of four protrusions, two each of which has an engaging roller 27 at the upper end of the vertical support shaft 26 protruding from the upper arm 25. It is supported.

In the case of this example, as shown in FIGS. 5 and 6, in order to use separate engaging rollers 27 for loading and unloading each pallet 12 on and from the parking shelves 9, 9 on both sides of the hoistway 8, as shown in FIGS. Two engaging rollers 27, 27 are provided. The engagement rollers 27, 27 are provided on the conveyor chain 23 in such a manner that one of them is at one end of the return side 23A of the conveyor chain 23 and the other is at the other end of the return side 23A. There is.

-Engagement Recess-As shown in FIGS. 3 and 4, the lower surface of the pallet 12 is
Two parallel vertical plates 24a, 24b extending in the horizontal direction orthogonal to the pallet transfer direction are attached, and the plate-shaped engaging recesses 24 opening downward are formed by the plates 24a, 24b. That is, in the engaging concave portion 24, the engaging roller 27 is the conveyor chain 2
3 is inserted by the orbital movement from the return side 23A to the carrier side 23B and is disengaged by the orbital movement from the carrier side 23B to the return side 23A, and the entrance / exit 24c of the engagement roller 27 is the return side of the conveyor chain 23. An opening is formed in a side direction orthogonal to the pallet transfer direction at a position corresponding to the boundary between 23A and the carrier side 23B.

In the case of the present embodiment, the inlet / outlet 24c is formed by the plate 24 so that the engagement roller 27 can be smoothly inserted and removed.
It is formed by shifting the edge positions of a and 24b. Further, in order to secure the engagement state between the engagement concave portion 24 and the engagement roller 27 on the carrier side 23B, the plate 24 is provided.
a and 24b extend greatly to the carrier side 23B.

<Operation of Pallet Transfer Device> -Transfer of Pallet from Parking Shelf to Elevating Table-As shown in FIG. 5, the two engaging rollers 27, 27 are both arranged on the return side 23A of the conveyor chain 23. In the initial state, the elevator table 7 is in an empty pallet state and the hoistway 8 can be raised and lowered without interfering with the parking shelves 9 and 9 (not shown in FIGS. 5 and 6) on both sides. is there.

In FIG. 5, when the pallet 12 is transferred from the parking rack on the right side to the lift table 7, the conveyor chain 23 is rotated clockwise from the initial state. As a result, the engagement roller 27 arranged on the right side of FIG.
Is fitted into and engaged with the engaging recess 24 of the pallet 12 of the right parking rack from its entrance 24c (see FIG. 3).

The conveyor chain 23 receives a reaction force from the pallet 12 via the engagement roller 27 and the arm 25 at the time of the fitting engagement, but the two arms 25, 25 extending from the engagement roller 27 are pinned to the conveyor chain 23. It is supported by 23a. Therefore, as compared with, for example, one arm having a base end rigidly coupled to one link plate of the conveyor chain 23, the present example uses the above reaction force of the link plate from the sprocket 22. There are few uplifts and vibration and noise are less.

However, the engaging roller 27 moves toward the sprocket 22 on the left side as it goes around the carrier side 23B of the conveyor chain 23, and accordingly, the pallet 12 moves from the right side parking rack to the lift table 7. Be transferred onto. FIG. 6 shows a state in which the engagement roller 27 has moved to the left end on the carrier side 23B, and at this point, the transfer of the pallet 12 to the lift table 7 is completed.

Therefore, the elevating table 7 moves up and down with the two engaging rollers 27, 27 arranged on the carrier side 23B of the conveyor chain 23 when the pallet 12 is mounted. When the pallet 12 of the parking shelf on the left side of the hoistway 8 is transferred to the hoist table 7, the conveyor chain 23 may be run counterclockwise from the initial state.

As described above, the engagement roller 27 is separated from the lift table 7 laterally, and the engagement recess 24 of the pallet 12 of the parking rack 9 is provided.
The reason why the engaging roller 27 can be engaged with is that the engaging roller 27 is rotationally moved around the winding portion of the conveyor chain 23 by the protruding length of the arm 25. It can be seen that it is not necessary to move it towards the parking rack 9.

-Transfer of pallet from elevator to parking rack-In this case, pallet 1 from parking rack 9 to elevator 7
2 will be operated in the reverse manner of transfer. That is,
When the conveyor chain 23 is rotated counterclockwise from the state where the pallet 12 is held on the lift table 7 as shown in FIG. 6, the state shown in FIG. 5 is obtained.
Therefore, also in this case, since the engagement roller 27 rotates around the winding portion of the conveyor chain 23, the pallet 12 is lifted without moving the conveyor chain 23 itself from the lift 7 to the parking rack 9. It can be seen that the sheet can be reliably fed onto the parking rack 9 that is laterally separated from 7.

Although the conveyor chain 23 is arranged on one side of the through hole 7a of the lifting table 7 in the above embodiment,
As shown in, the through holes 7a may be sandwiched and arranged on both sides thereof. In that case, the same engaging recesses as in the previous embodiment will be added to the pallet 12 at two positions, and the two additional engaging recesses are also arranged point-symmetrically with respect to the center of rotation of the pallet 12. Will be done.

Further, in the above embodiment, two conveyor chains 23 are arranged above and below, but one conveyor chain may be provided.

In the above embodiment, the pallet 12 is provided with wheels and the elevators 7 and the parking shelves 9 are provided with rails for wheels. However, the elevators 7 and the parking shelves 9 are provided with free rollers. The pallet 12 may be movably supported.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an elevator parking device.

FIG. 2 is a plan view showing a lift and a parking rack.

FIG. 3 is a plan view showing a main part of a pallet transfer device.

FIG. 4 is a side view showing a main part of a pallet transfer device.

FIG. 5 is a partially omitted plan view showing an initial state when transferring a pallet from a parking shelf to an elevator.

FIG. 6 is a partially omitted plan view showing a state in which a pallet is transferred from a parking shelf to an elevator.

FIG. 7 is a plan view similar to FIG. 2 of another embodiment.

[Explanation of symbols]

 3 Parking device 7 Elevating table 8 Hoistway 9 Parking shelf 12 Pallet 21 Pallet transfer device 22 Sprocket 22a Sprocket rotating shaft 23 Conveyor chain 24 Engagement recess 25 Arm 27 Engaging roller (engager)

Claims (1)

[Claims] 1. An elevating platform for supporting a pallet on which a vehicle is mounted to ascend and descend, and a plurality of parking shelves arranged in layers along the hoistway of the elevating platform for accommodating each vehicle together with the pallet. A pallet transfer device for an elevator-type parking device in which a pedestal and each parking rack are connected and pallets are transferred between the two, the axis of which is perpendicular to both ends of the lift table in the pallet transfer direction. And a pair of sprockets, a conveyor chain that is wrapped around both sprockets to transfer the pallet between the elevator and the parking rack, and a proximal end of the conveyor chain that is supported by the conveyor chain. An arm projecting toward the outer peripheral side of the conveyor chain, an engagement element provided at the tip of the arm, and an end provided in the pallet transfer direction of the pallet. A pallet transfer of an elevator-type parking device, characterized in that the child is provided with an engaging concave portion that is inserted by the circular movement from the return side to the carrier side of the conveyor chain and that is disengaged by the circular movement from the carrier side to the return side. Mounting device.