JP2981809B2 - Pallet wheel stopper for mechanical parking system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet wheel stopper for a mechanical parking system.

[0002]

2. Description of the Related Art In a mechanical parking device in which a vehicle is mounted and stored on a pallet, it is required that the vehicle does not move on the pallet. As means for that purpose, a wheel stopper having a height of about 80 mm for preventing forward movement of the wheel is fixed at a predetermined position of a wheel mounting portion where the wheel on the pallet is rolled and mounted, or 2. Description of the Related Art There is known a wheel mounting portion in which a front wheel stopper for preventing forward movement of a wheel and a rear wheel stopper for preventing rearward movement of a wheel are fixed at an interval in front and rear. The front wheel chock and the rear wheel chock are usually formed in a mountain shape having a low height so that the wheel can move over the wheel chock and move between the wheel chock.

In addition to the above-mentioned fixed wheel stopper, for example, as described in Japanese Utility Model Laid-Open Publication No. 60-35850, a part of a wheel mounting portion of a pallet which moves up and down is fixed to a wheel stopper member which can be raised and lowered. When the pallet is lowered onto the ground, the wheel stoppers fall down to allow the wheels to pass, while when the pallet is separated from the ground, the wheel stoppers rise to prevent the wheels from moving. is there.

[0004]

The above-mentioned fixed wheel chock has a simple structure, but in the former case, the vehicle is prevented from moving forward on the pallet because the wheel chock member completely prevents the wheel from moving forward. And cannot stop the wheel from moving backwards. In the latter case, when an external force acts on the vehicle due to movement or stoppage of the pallet, it is necessary to prevent the wheels from going over the wheel stopper even if the vehicle's side brake is released. In such a case, even when the vehicle is driven and driven, it is difficult for the wheels to get over the wheel stopper members, and it is difficult to design the wheel stopper members so as to satisfy these conflicting requirements.

Further, since the position of each wheel stopper is fixed, the vehicle cannot be stopped at an optimum position. That is, it is preferable to mount the vehicle on the pallet such that the center of gravity of the vehicle coincides with the center of the pallet. However, whether the vehicle is a mini vehicle or a normal vehicle, for example, its front wheels are stopped at the same position by the wheel stoppers, so that the above mounting cannot be expected. Even if the overall length of the vehicle is the same, the same problem arises because the front wheel position or the wheel base differs depending on the vehicle type.

On the other hand, in the case of the movable type wheel stopper, although the problem is less than that of the fixed type, the wheel stopper member is disposed at a fixed position on the pallet similarly to the fixed type. However, not all vehicles can be stopped at the optimal position on the pallet.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention solves such a problem by pivotally supporting a wheel stopper on a side portion of a wheel mounting portion on a pallet, so that a desired portion on a wheel mounting portion is provided. So that it can be pivoted to the position
This is intended to solve the problem.

[0008] That is, a first means for solving the above-mentioned problem is a pallet in a mechanical parking device having a loading section for loading a vehicle on a pallet for parking, and mounting and storing the vehicle on the pallet. A wheel stop device, which lays on a wheel mounting portion extending in the vehicle entry direction of the pallet and stops a wheel mounted on the wheel mounting portion from moving, and a lateral position of the wheel mounting portion. The base end is pivotally supported by a vertical pin at a lateral portion of the wheel mounting portion so that the base portion is rotated along with the wheel mounting portion in the vehicle entry direction and to a retracted position allowing the movement of the wheel. And a driving means provided in the entry section and configured to rotate the wheel stop member between the stop position and the retracted position.

A second means for solving the above-mentioned problem is obtained by developing the first means, wherein the pallet extends on both sides of the wheel mounting portion in a vehicle entering direction and the wheel mounting portion is provided. And a guide wall that guides the rolling of the wheels in the vehicle, and is characterized in that the wheel stoppers are flush with the guiding walls before and after the vehicle entry direction so as to guide the rolling of the wheels at the retracted position.

A third means for solving the above-mentioned problem is obtained by developing the first means. The pallet has a male screw member extending in a vehicle entering direction and rotatable, And a female screw member having a base end near the vertical pin in the wheel stopper member is locked, and the driving means is constituted by a nut runner for rotating the male screw member. There are features.

[0011]

In the above first means, the wheel stopper is
The pallet is pivotally supported by a vertical pin on a side portion of the wheel mounting portion, and allows movement of the wheel when in the retracted position on the side, and rotates from the retracted position to the wheel mounting portion. The movement of the wheels is prevented by lying down. In this case, there is no problem in stopping the wheel even when the wheel stopper is lying obliquely to the vehicle entry direction.

That is, various modes can be selected as the manner in which the wheel stoppers lie on the wheel mounting portion. When the vehicle is lying obliquely forward with respect to the vehicle entry direction, the wheels are placed on the front side of the pallet. Can be stopped
When the vehicle is lying obliquely backward with respect to the vehicle entry direction, the wheels can be stopped by approaching the rear side of the pallet.

As described above, the wheel stopper has a structure in which the base end portion is pivotally supported by the side portion of the wheel placing portion of the pallet and pivots to lie on the wheel placing portion to perform the wheel stopper. Therefore, the stop position of the wheel can be arbitrarily selected within a predetermined range in the vehicle entry direction.

[0014] In the case of the second means, the wheel stop member is flush with the guide walls in the front and rear directions in the vehicle entry direction so as to guide the rolling of the wheel in the retracted position. The rolling of the wheels can be guided.

In the case of the third means, when the male thread member extending in the vehicle entry direction of the pallet is rotated by the nut runner in the vehicle entry section, the female screw member moves in the vehicle entry direction, and the wheel stopper is moved to the retracted position and the wheel stopper position. Will rotate between them. When an external force acts on the wheel stopper member, the external force acts axially on the threaded portion between the male screw member and the female screw member, so that the rotation of the male screw member is received by the engagement of the mutual thread portions. I will not invite you. In other words, the means for rotating the wheel stopper has a self-locking function of holding the wheel stopper at an appropriate position, and there is no need to separately provide a stopper for the wheel stopper.

[0016]

Therefore, according to the first to third means, the wheel stopper member is pivotally supported by a vertical pin on a side portion of the wheel mounting portion of the pallet, and the wheel lying on the wheel mounting portion. Since it is made to rotate between the stop position and the retracted position on the side of the wheel mounting portion, the stop position of the wheel can be arbitrarily selected in a predetermined range in the vehicle entry direction in the wheel mounting portion, and the type of vehicle can be selected. Regardless, the vehicle can be stopped at an optimal position on the pallet.

According to the second means, the wheel stopper is flush with the guide walls in the front and rear direction of the vehicle so as to guide the rolling of the wheel at the retracted position. It does not hinder the movement, but rather forms a guide wall, which is advantageous in guiding the rolling of the wheels.

According to the third means, a male screw member extending in the vehicle entry direction and rotatable with the pallet, and a base end near the vertical pin of the wheel stopper member screwed to the male screw member are engaged. Since the stopped female screw member is provided, and the nut runner for rotating the male screw member is provided in the entry portion, the wheel stopper member can be held at an appropriate position without separately providing a stopper for the wheel stopper member.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

-Structure of Mechanical Parking Apparatus- FIGS. 1 and 2 show the overall structure of the mechanical parking apparatus. In the figure, reference numeral 1 denotes two front sides erected on the ground,
A parking frame composed of a total of six pillars on the rear side and four beams fixed in a rectangular shape to the upper ends of the six pillars, and a traversing rail 3 is laid on the ground surface. The traversing rail 3 supports two traversing pallets 2 for mounting on a vehicle so as to traverse. Further, from the beam, three lifting pallets 2 are supported by a lifting chain 5 so as to be able to ascend and descend between a vehicle entrance portion on the ground and a vehicle storage portion above the vehicle entrance portion. Note that the four rear columns are provided at equal intervals and are used as a lifting guide for the three lifting pallets 2.

Therefore, in this parking device, when the vehicle is accommodated by the lifting pallet 2, the lower two transverse pallets 2 are moved left and right to form an empty space, and the lifting pallet 2 is lowered there. Will be.

FIG. 3 shows the pallet 2 described above. The pallet 2 has two left and right wheel mounting portions 6 and 6 that extend in the vehicle entry direction (front-back direction) and on which the wheels of the vehicle roll and are mounted. A central convex portion 7 is formed between the wheel mounting portions 6 and 6 of the pallet 2 so as to protrude upward and extend in the front-rear direction. Are formed on the outer convex portions 8, 8 extending in the direction of the arrow.
The inclined rising surfaces on both sides of the central convex portion 7 and the inclined rising surfaces of the outer convex portions 8 prevent the wheels from rolling on both sides of the wheel mounting portions 6 and 6 so that the sidewalls and the wheels are not damaged. Are formed respectively.

Then, at the front of the wheel mounting portion 6 on one side,
Front wheel stopper 11 for preventing forward movement of wheels
And a rear wheel stopper member 1 for preventing rearward movement of the wheel
2 are provided at an interval in the front-rear direction, and each is configured to be rotatable so as to also serve as a guide wall for guiding the rolling of the wheels. A nut runner 13 for driving the wheel stopper members 11 and 12 is provided in the vehicle entrance.

The wheel stoppers 11 and 12 and the rotating mechanism thereof are specifically shown in FIGS.

As shown in FIG. 4, the central convex portion 7 has a guide wall 9
Has been partially resected. In the vicinity of the center of the cut portion, the base ends of the wheel stopper members 11 and 12 are pivotally supported on the pallet 2 by vertical pins 14 and 15 at an interval in the front-rear direction. A wheel stop position (solid line state in FIG. 4) lying on the portion 6, and a retreat allowing the movement of the wheel W by being arranged in the vehicle entering direction along the wheel mounting portion on the side of the wheel mounting portion 6. To the position (the state shown by the dashed line in FIG. 4).

FIG. 5 shows a state in which the wheel stoppers 11 and 12 are at the wheel stopper position. The wheel contact surfaces of the two wheel stoppers 11 and 12 are located on the guide wall 9 of the central convex portion 7. Standing up at the same angle as. In FIG. 5, the rising angle of the wheel contact surface of the rear wheel stopper member 12 is smaller than that of the front wheel stopper member 11. FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4. Because it is. In the retracted position, the two wheel stoppers 11 and 12 are flush with the guide walls in the front and rear directions of the vehicle to guide the rolling of the wheels W. In this case, the wheel stoppers 11 and 12 and the wheel contact surfaces are formed to have a height and an inclination angle such that the wheel W cannot be substantially climbed over.

Also, two male screw members 1 extending in the vehicle entry direction are provided behind the guide wall 9 on the pallet 2.
6, 17 are provided rotatably with their front and rear ends supported by bearings 19, 19, respectively.
Female screw members 21 and 22 are screwed into each of 17. The vertical pins 1 on the wheel stoppers 11 and 12
Ends protruding beyond the wheel stoppers 4 and 15 are connected to the female screw members 21 and 22.

That is, as shown in FIG. 6, an elongated hole 23 is formed at an end of the wheel stopper member 12, and a connection pin 24 vertically protruding from the female screw member 22 is formed in the elongated hole 23. Is engaged. Accordingly, when the male screw member 17 is rotated, the female screw member 22 is screwed forward and backward with the rotation, and the wheel stopper member 12 rotates around the vertical pin 15 between the wheel stopper position and the retracted position. Become. The nut runner 1 is provided at the end of the male screw member 17.
3 is provided with a socket 25 to be engaged. The bearing 19 of the male screw member 17 is constituted by a radial bearing 19a and a thrust bearing 19b. The configuration shown in FIG. 6 is similarly employed on the wheel stopper member 11 side.

As shown in FIG. 7, the male screw members 16 and 17 have a lead angle β such that the male screw members 16 and 17 do not rotate even when an external force acts on the female screw members 21 and 22 in the axial direction. Are formed shallowly. Further, the nut runner 13 is provided with a torque detection switch for stopping application of rotation to the male screw members 16 and 17 when a rotation load equal to or greater than a set value acts on the rotation drive unit.

When the vehicle is put on the pallet 2, the nut runner 13 in the vehicle entrance is operated to rotate the male screw members 16 and 17, so that the front wheel stop member 11 is stopped by the wheel. The rear wheel stoppers 12 are rotated to the retracted positions. In this case, the front wheel stopper member 11 is rotated and positioned so as to be an optimal front wheel stopper position according to the size of the vehicle body of the vehicle and the positional relationship between the vehicle body and the front wheels.

As a result, the vehicle is driven by the rear wheel stopper 12.
The front wheel can be advanced using the wheel contact surface of the vehicle as a guide surface. Then, when the front wheel contacts the front wheel stopper 11, the vehicle stops traveling.

Thereafter, the male screw member 19 on the rear wheel stopper member 12 is rotated to rotate the rear wheel stopper member 12 to the wheel retaining position. In this case, the nut runner 13
When the rear wheel stopper member 12 comes into contact with the front wheel and a load equal to or greater than the set value is applied to the drive unit, the rotation of the male screw member 17 is stopped.

In such a state, the pallet 2 is lifted or lowered or traversed to a predetermined vehicle accommodating portion and stops. In this ascent / descent / traverse / stop, even if an external force in the front-rear direction acts on the vehicle, the vehicle does not move on the pallet 2 because its front wheels are stopped by the wheel stopper members 11 and 12. Particularly, the male screw members 16 and 17 and the female screw member 21 for rotating the wheel stopper members 11 and 12 are provided.
22 means that each lead angle is formed shallow,
Even if a large external force or vibration acts on the wheel stopper members 11 and 12 in the self-locking state, the male screw members 16 and
17 rotation, ie, the wheel stopper 1
No rotation of 1,12 occurs.

When the vehicle is moved down from the pallet 2 at the vehicle entrance, the nut runner 13 rotates both the male screw members 16 and 17 to rotate both the wheel stopper members 11 and 12 to the retracted position. . Thereby, the vehicle can get out of the pallet 2 by running forward with the wheel contact surfaces of the wheel stopper members 11 and 12 as guide surfaces of the wheels W. When lowering the vehicle from the pallet 2 by moving backward, only the rear wheel stopper member 12 needs to be turned to the retracted position.

In the above-described embodiment, two types of wheel stoppers are provided, one for preventing the wheel from moving forward and the other for preventing the wheel from moving backward. In some cases, only one of them is provided. The wheel stoppers are not provided at one location on the pallet, but are provided for the left and right wheels on the left and right wheel mounting portions of the pallet, or for the front wheel and the rear wheel at two locations before and after the wheel mounting portion. They can be provided for wheels or in combination.

[Brief description of the drawings]

FIG. 1 is a front view of a mechanical parking device.

FIG. 2 is a side view of a mechanical parking device.

FIG. 3 is a perspective view of a pallet.

FIG. 4 is a partially cutaway plan view showing a pallet wheel stopper device.

FIG. 5 is a sectional view taken along line AA in FIG. 4;

FIG. 6 is a partially sectional plan view showing a rotation mechanism of a wheel stopper member.

FIG. 7 is a plan view showing a male screw member and a female screw member that constitute the rotation mechanism.

[Explanation of symbols]

 2 Pallet 6 Wheel mounting portion 9 Guide wall 11, 12 Wheel stopper 13 Nut runner 14, 15 Vertical pin 16, 17 Male screw member 21, 22 Female screw member

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04H 6/18 E04H 6/42

Claims (3)

(57) [Claims] 1. A pallet wheel stopping device for a pallet in a mechanical parking device having a loading portion for loading a vehicle on a pallet for parking, wherein the vehicle is mounted and stored on the pallet. A stop position that lays down on the wheel mounting portion extending in the vehicle mounting direction and prevents movement of the wheel mounted on the wheel mounting portion, and enters the vehicle along the wheel mounting portion on the side of the wheel mounting portion. A wheel stopper member whose base end is pivotally supported by a vertical pin at a side portion of the wheel mounting portion so as to rotate to a retracted position that allows the movement of wheels by being arranged in the direction, A pallet wheel stopping device for a mechanical parking device, comprising: driving means provided for rotating the wheel stopping member between the stop position and the retracted position. 2. The pallet according to claim 1, further comprising a guide wall extending on both sides of the wheel mounting portion in a vehicle entry direction to guide rolling of the wheel in the wheel mounting portion, wherein the wheel stopper is configured to rotate the wheel in a retracted position. The pallet wheel stopping device for a mechanical parking device according to claim 1, wherein the pallet is flush with front and rear guide walls to guide the movement. 3. The pallet has a male screw member extending in the vehicle entry direction and rotatable, and a female screw screwed to the male screw member and having a base end near the vertical pin of the wheel stopper member locked. The pallet wheel stopping device according to claim 1, wherein the driving means comprises a nut runner for rotating the male screw member.