JP2884276B2 - Mechanical parking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mechanical parking device.

[0002]

2. Description of the Related Art Conventionally, a plurality of pallets for vehicle loading are horizontally elongated in a vertical plane by an upper and lower two-stage horizontal transition portion and an arc-shaped transition portion connecting opposite ends of these horizontal transition portions in an arc shape. A mechanical parking device combining a pallet circulating means for circulating and shifting so as to draw a shape trajectory, and a pallet elevating means for elevating and lowering the pallet between the circulating means and a vehicle entrance / exit position set thereabove. Various things are known. In some of them, the pallet is transferred to and from the elevating means at one of the arc-shaped transition portions of the circulating means, but this is done by installing the elevating means only at one end side of the circulating means. There is a restriction on the layout that the vehicle entrance / exit position can be set only at a position above the end because there is a restriction that the vehicle cannot enter or exit.

On the other hand, an elevating means is provided at an intermediate portion between both ends of the circulating means,
That is, there is a device which can be attached to an arbitrary position of the horizontal transition portion, and an example thereof is a device disclosed in Japanese Utility Model Laid-Open No. 57-71649. In this conventional example, lifters are arranged on both sides of a horizontal transition portion of the circulation means. As shown in FIG. 6, each lifter a has a pair of movable forks b, b.
Is provided. Each of the movable forks b, b has an engagement position where the tip of the movable fork b engages with the lifting / lowering engagement portion e on the lower surface of the pallet d by the fork driving unit c provided on the lifter a, Are rotated between a storage position stored on the side of the lifter a and a pallet d in cooperation with the lifter on the other side (not shown). .

A support roller f is provided at one end in the rail longitudinal direction on the lower surface on both sides of the pallet d, and the support roller f is rotatably mounted on the upper rail g so as to be rolled.
Further, on the lower surface on the other end side, there is provided a feed engaging portion i which is supported by being engaged with a feed arm h for circulating the pallet d. And the fork b is
The fork b is stored before or after the engagement with the lifting / lowering engaging portion e is released, and the fork b is stored when the pallet d moves through the horizontal transition portion. It is configured such that b does not interfere with the support roller f. In addition, the fork b is engaged and disengaged from the elevating engaging portion e by using a vertical gap formed between the pallet d and the upper rail g located at a position lower than the pallet d. Is configured.

[0005]

However, in the above-mentioned prior art, since the fork b must be driven to engage and disengage with the pallet d, the fork drive unit c must be installed on the lifter a. However, the installation is necessary for the lifters a on both sides. Therefore, an installation space for that is required, which is disadvantageous in terms of space and costly. Further, since power must also be supplied to each of the fork driving units c, the power supply cost for operating the apparatus is increased as a whole.

In addition, since the fork b must be operated every time the pallet d is transferred between the lifting / lowering means and the circulation means, there is a problem that the transfer takes time.

On the other hand, it is conceivable to adopt a structure in which the fork is fixed to the lifter, and transfer the pallets by using the lifting and lowering movement of the lifter. That is, at the time of vehicle entry, the fork is lowered to the lower end position to support the pallet on the upper rail, and the fork is raised after the pallet has shifted from the delivery position. At the time of unloading, the pallet is moved to the delivery position while the fork is lowered to the lower end position, and the fork is raised. Thus, the delivery of the pallets is performed.

However, when the fork b supports the pallet d at the pallet transfer position in a state of crossing the space above the upper rail g as in the conventional example, the support roller f itself or the support roller f is palletized. Since the part attached to d interferes with the fork b, the pallet d cannot be transferred by the horizontal transfer portion while the fork b is stopped at the delivery position. In the case where the fork supports the pallet while crossing the space below the upper rail, the above-described interference can be avoided, but when the pallet is raised and lowered, the fork is caught on the upper rail and the fork itself cannot be raised or lowered. .

The present invention has been made in view of the above points, and has as its object to enable a fixed fork to be moved up and down without interfering with a support roller and without being caught on an upper rail. I have.

[0010]

In order to achieve the above-mentioned object, a solution taken by the present invention is that a fixed fork supports a pallet in a pallet transfer position across a space below an upper rail. In addition to the above, a notch is provided in a portion that interferes with a fork or a pallet when the upper rail is moved up and down.

Specifically, in the present invention, a plurality of vehicle mounting pallets having support rollers on both sides, and the pallets are formed along a pair of upper rails on both sides and a pair of lower rails on both sides. Pallet circulating means for circulating and shifting so as to draw a horizontally long trajectory in a vertical plane by means of an upper and lower two-stage horizontal transition portion and an arc-shaped transition portion connecting opposite ends of the horizontal transition portion in an arc shape, Pallet elevating means for elevating and lowering a pair of lifters on both sides having forks for supporting the pallet between a pallet delivery position set at an upper horizontal transition portion of the pallet circulating means and a vehicle loading / unloading position above the pallet circulating means. It is assumed that a mechanical parking device is provided.

A specific solution of the invention according to claim 1 is that a fork is fixed to each lifter so that the tip side thereof can support the pallet across the space below the upper rail at the pallet transfer position, When the upper rail is provided with a fork and a notch that allows the pallet supported by these forks to be raised and lowered, and at least when the support roller passes over the notch at a position that does not interfere with the fork of the pallet circulation means And a support member for supporting the pallet in place of the upper rail.

According to a second aspect of the present invention, in the above-mentioned invention, the support member is an auxiliary rail, and auxiliary rollers rotatably supported by the auxiliary rail are provided on both sides of the pallet. And

[0014]

According to the first aspect of the present invention, the pallet at the pallet transfer position is supported by the fork in a state of crossing the space below the upper rail. Can be avoided. Then, the fixed fork moves up and down as the lifter moves up and down. In that case, the fixed forks and the pallets supported by these forks can be passed through the upper rail up and down without interfering with the upper rail.

On the other hand, when the supporting roller of the pallet passes through the area of the above-mentioned missing portion, the supporting member supports the pallet instead of the upper rail. Therefore,
The transfer of the pallets at the horizontal transfer section of the circulation means and the transfer of the pallets with the transfer of the pallets to and from the elevating means can be performed without any trouble.

According to the second aspect of the present invention, the pallet is supported by rolling the auxiliary roller on the auxiliary rail, so that the pallet can be smoothly shifted within the range of the missing portion. Can be.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 3, the mechanical parking device according to the present embodiment has a plurality of pallets 1 mounted on a vehicle.
Circulating means 2 which circulates and transfers the trajectory so as to draw a trajectory of an oblong shape by an upper and lower two-stage horizontal transition portion and an arc-shaped transition portion connecting the opposite ends thereof vertically, and an upper horizontal Pallet lifting / lowering means 3 is provided for transferring the pallet 1 at the pallet transfer position set in the transition portion and for raising and lowering the pallet 1 between the pallet transfer position set above the transfer position.

The pallet circulating means 2 is provided with an upper rail 4 and a lower rail 5 which are vertically spaced apart from each other and are installed in parallel with each other in a horizontal direction, and one end side in the rail longitudinal direction between these rails 4 and 5. , A drive sprocket 6 having a rotation axis in the rail width direction, a driven sprocket 7 also provided on the other end side in the rail longitudinal direction, and a plurality of A chain 9 in which feed arms 8 are arranged at a predetermined pitch; and a hanger arm 10 which is arranged on one side in the rail longitudinal direction of the sprockets 6, 7 and rotates in synchronization with the movement of the feed arm 8 by the chain 9. Are provided on both sides of the circulation path. An upper horizontal transition portion along a pair of upper rails 4 and 4 on both sides and a pair of lower rails 5 and 5 on both sides are also provided.
Are formed along the lower horizontal transition portion.
The upper rail 4 is disposed at a position slightly away from the pallet 1 circulated by the circulating means 2 in the rail width direction, as shown in FIG. It is located at a position closer to the inside.

As shown in FIG. 1, the pallet 1 which is circulated and shifted by the circulating means 2 has one end in the rail longitudinal direction on both sides of the mounting portion on which the vehicle is mounted (left side in FIG. 1).
An upper roller 11 and a lower roller 12 are provided on the upper and lower surfaces, respectively. The upper roller 11 is rotatably supported by the upper rail 4 when the pallet 1 moves on the upper horizontal transition portion. As shown in FIG. The pallet 1 is rotatably supported at a position outside the pallet 1 by a support shaft protruding outward. The lower roller 12 is rotatably supported by the lower rail 5 when the pallet 1 moves along the lower horizontal transition portion. The pallet 1 is rotatably supported at a position inside the pallet 1 by a support shaft protruding inward. At the lower position of the upper roller 11, a reversal receiving portion 13 which is supported by being engaged with the tip of the hanger arm 10 at the arcuate transition portion of the circulation means 2 projects outward. . On the other hand, on the lower surface of the other end of the rail in the longitudinal direction of the rail (the right side in FIG. 1), a feed engaging portion 14 that is engaged with and supported by the feed arm 8 projects downward. ing.
Also, on the upper surface on the other end side in the rail longitudinal direction on both sides of the mounting part,
A small-diameter position regulating roller 17 for regulating the position of the pallet 1 in the longitudinal direction of the rail when ascending and descending is rotatably supported at a position outside the pallet 1 by a support shaft protruding outward from the pallet 1. I have. This position regulating roller 1
As shown in FIGS. 4 and 5, 7 includes a main body 17a for regulating the position in the rail longitudinal direction, and a flange 17b for regulating the position in the rail width direction.
In addition, on both side edges in the rail width direction of the mounting portion, there are provided inverted L-shaped engagement rails 1a which are supported by being engaged with fork 15 tips of the elevating means 3 described later. Both ends of the engagement rail 1a are bent obliquely upward with a gentle curve.

A notch 4a is provided in a portion of the upper rail 4 corresponding to the pallet elevating means 3, and the length of the notch 4a in the rail longitudinal direction is set to be slightly larger than that of the pallet 1 in the same direction. On the other hand, at a position below the notch 4a of the pallet circulation means 2 and close to the circulation path,
The lower roller 12 of the pallet 1 to be transferred on the upper horizontal transfer portion
There is provided an auxiliary rail 18 for supporting the roller so that it can roll. That is, the auxiliary rail 18 is disposed directly above the lower rail 5. Also, the auxiliary rail 1
8 is provided larger than the size of the notch 4a, and both ends thereof are gently curved diagonally downward, and the lower roller 12 of the pallet 1 approaching the notch 4a is supported by the auxiliary rail 18. It is designed to be able to support smoothly and easily.

The above-mentioned pallet lifting / lowering means 3 comprises a pair of columns 1
9 and 19 are provided on both sides of the circulation means 3, respectively. A lifter 20 that is guided by the two supports 19 and 19 and that moves up and down is disposed on each of the supports 19 and 19, and a pair of forks 15 and 1 is provided at an upper end of each lifter 20.
Numerals 5 protrude and are fixed to the respective lifters 20 with their distal ends facing each other. Guide rollers 20a are provided above and below both sides of the lifter 20 so that the lifter 20 can smoothly move up and down while restricting the inclination of the lifter 20 by being rollably pressed against the surface of the corresponding support column 19. Is provided. A motor 21 for driving the lifter 20 up and down is provided between the columns 19 and 19 on the side shown in FIG. 3, and the driving force is also transmitted to the lifter (not shown) on the opposite side. It has become.

When the lifter 20 is at the lower end position shown in FIG. 2, each fork 15 does not interfere with the feed arm 8 of the circulating means 2 and its tip crosses the space below the upper rail 4 and the pallet 1 The upper roller 11, the reversing receiving portion 13, and the feeding engaging portion 14 are provided in a shape protruding in the horizontal direction so as not to interfere with each other. A pair of engaging rollers 15a, 15a is rotatably supported at the tip of each fork 15 by a support shaft protruding in the direction in which the fork 15 protrudes. 15 a is configured to engage with the engagement rail 1 a of the pallet 1. A guide portion 22 that guides the above-described position regulating roller 17 when the pallet 1 is moved up and down to regulate the position of the pallet 1 in the horizontal direction is provided side by side on the one column 19. The guide portion 22 includes a pair of guide rails 22a, 22a.
The lower end is located above the upper rail 4 and close to the circulation path, and the guide portion 22 does not interfere with the upper roller 11 of the pallet 1 moving on the upper rail 4 side. At the lower end of the guide portion 22, the space between the rails 22a, 22a is widened downward, and the surface on the circulation path side is gently curved outward. 17 is easy to accept.

Next, the operation of the mechanical parking device configured as described above when the vehicle is parked and when the vehicle is parked will be described. First, when a vehicle is loaded into the pallet 1 at the vehicle loading / unloading position, the pallet 1
Is lowered together with the lifter 20 toward the delivery position of the pallet circulation means 2 by the operation of the pallet lifting means 3. During this lowering, the position regulating roller 17 is engaged with the guide portion 22, so that the pallet 1 descends while its horizontal position is regulated. On the other hand, the circulating means 2 is provided with an empty pallet portion, that is, a feed engaging portion 1 of the pallet 1.
The feed arm 8 that is not engaged with the gear 4 is shifted to the delivery position by the circulation traveling of the chain 9.

At this time, when another pallet 1 shifts the transfer position due to the circulation running of the chain 9, the upper roller 11 (shown by a phantom line in FIG. 1) of the upper pallet 1 is moved from the right side in FIG. The lower roller 12 reaches the missing portion 4a, but immediately before reaching the missing portion 4a.
Supported by As a result, the pallet 1 is
Is maintained on the auxiliary rail 18 in place of the upper rail 4 while maintaining the engagement by. Thereafter, the upper roller 11 is again supported by the upper rail 4 at the terminal end of the missing portion 4a, and the lower roller 12 moves away from the auxiliary rail 18 and moves on the horizontal transition portion. When the empty pallet is shifted to the delivery position in this way, the circulation means 2 stops temporarily.

With the circulation means 2 stopping the empty pallet at the delivery position, the lifter 20 descends.
At this time, the fork 15 passes through the notch 4a of the upper rail 4 downward, and the pallet 1 supported by the fork 15 is supported by the lower roller 12 landing on the auxiliary rail 18 and supported by the pallet. 1 feed engaging portion 1
4 is supported by being engaged with the feed arm 8. Along with this, almost all of the load of the pallet 1 applied to each engagement roller 15a of the fork 15 has been transferred to the circulation means 2 side.

With the lifter 20 stopped at the lower end position, the circulating means 2 shifts another empty pallet portion to the transfer position by the circulating travel of the chain 9 and stops. Then, the lifting / lowering means 3 operates to lift the lifter 20. At this time, the fork 15 passes through the notch 4a of the upper rail 4 upward, so that it does not interfere with the upper rail 4.

Next, when the vehicle is taken out of the vehicle, first, the circulating means 2 shifts the empty pallet portion to the delivery position and stops.
The elevating means 3 lowers the lifter 20 toward the lower end position. Then, in a state where the elevating means 3 is stopped at the lower end position, the circulating means 2 shifts the pallet 1 on which the corresponding vehicle is mounted to the delivery position and stops. In this state, the pallet 1 is supported by the feed arm 8 and the auxiliary rail 18 so that the pallet 1 can move upward without interfering with the upper rail 4 by the notch 4a. It becomes possible to engage with the engaging roller 15a in the vertical direction.

In this state, when the lifter 20 is raised by the operation of the lifting / lowering means 3, the engaging roller 15a supports the engaging rail 1a from below and supports the pallet 1. In response, the lower roller 12 of the pallet 1 is
8, the engaging portions 14 are respectively separated upward from the feed arm 8, and the pallet 1 is raised.

At this time, the position regulating roller 1 of the pallet 1
7 reaches the lower end of the guide portion 22, and its main body 17a is regulated in the rail longitudinal direction by the guide rails 22a on both sides. As a result, even if the rollers 17 are misaligned in the same direction as shown by the imaginary line in FIG. 4, the rollers 17 are corrected to the appropriate positions shown by the solid lines in FIG. Will be regulated. Further, when receiving such a position restriction, the engaging rail 1a of the pallet 1 is supported by the engaging roller 15a of the fork 15 so as to be movable in the rail longitudinal direction, so that the position correction is performed smoothly. On the other hand, the position regulating roller 17 is regulated in the rail width direction by its flange portion 17b slidingly contacting the sliding contact surface of the guide portion 22. As a result, even if there is a misalignment in the same direction as shown by a virtual line in FIG. 5, the position is corrected to an appropriate position shown by a solid line in FIG. 5, and the position of the pallet 1 in the rail width direction is totally restricted. Will be done.

The pallet 1 on which the position correction in the horizontal direction has been performed in this manner is kept in the position corrected by the position regulating roller 17 being engaged with the guide portion 22. , And rises to the vehicle entrance / exit position.

In the above embodiment, the lower roller 12 is also used as an auxiliary roller, but the auxiliary roller may be provided separately from the lower roller 12.

[0032]

As described above, according to the first aspect of the present invention, the fork fixed to the lifter of the pallet elevating means interferes with the support roller of the pallet before and after delivery of the pallet to and from the pallet circulating means. The fork and pallet do not hinder the transfer of the pallet in the circulating means, and the fork and the pallet do not get caught on the upper rail during the ascent and descent. Can be delivered.
As a result, the lifter does not require a dedicated drive unit for the fork, so that space can be saved, the costs required for installation, power supply, maintenance, etc. can be reduced by that much, and the time required for delivery is reduced. can do.

According to the second aspect of the present invention, the pallet can be smoothly shifted at the notch provided on the upper rail in order to achieve the above-mentioned effect.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a main part of a mechanical parking device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a longitudinal sectional view showing the entire configuration of the mechanical parking device according to the embodiment of the present invention.

FIG. 4 is a partially enlarged view showing a position regulation of a pallet in a rail longitudinal direction in the embodiment of the present invention.

FIG. 5 is a partially enlarged view showing position control of a pallet in a rail width direction in the embodiment of the present invention.

FIG. 6 is a perspective view showing a main part of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pallet 2 Pallet circulation means 3 Pallet elevating means 4 Upper rail 4a Missing part 5 Lower rail 11 Upper roller (supporting roller) 12 Lower roller (auxiliary roller) 15 Fork 18 Auxiliary rail 20 Lifter

──────────────────────────────────────────────────続 き Continuing from the front page (72) Minoru Ikeda 1-1, Shinmeiwa-cho, Takarazuka-shi, Hyogo Shinmeiwa Industry Co., Ltd. Parking System Division (58) Field surveyed (Int.Cl. ⁶ , DB name) E04H 6/18

Claims (2)

(57) [Claims] 1. A plurality of vehicle mounting pallets having support rollers on both sides, and a two-stage upper and lower horizontal transition portion formed on the pallets along a pair of upper rails on both sides and a pair of lower rails on both sides. When,
Pallet circulating means for circulating and shifting in a vertical plane a circular trajectory in a vertical plane by means of an arc-shaped transition portion connecting opposite ends of the horizontal transition portion in an arc shape, and both sides having a fork for supporting the pallet. In a mechanical parking device provided with pallet elevating means for elevating a pair of lifters between a pallet delivery position set at an upper horizontal transition portion of the pallet circulation means and a vehicle entrance / exit position above the pallet circulation means, The fork is fixed to the lifter so that the leading end of the fork can support the pallet across the space below the upper rail at the pallet transfer position, and the upper rail enables the fork and the pallet supported by these forks to move up and down. A notch is provided, and at least a support roller passes over the notch at a position where it does not interfere with lifting and lowering of the fork of the pallet circulation means. Mechanical parking device characterized by providing a support member for supporting on behalf on the rails the pallet. 2. The mechanical parking device according to claim 1, wherein the support member is an auxiliary rail, and auxiliary rollers rotatably supported by the auxiliary rail are provided on both sides of the pallet. .