JPH08170437A - Multistory parking device - Google Patents

Abstract

PURPOSE: To prevent accidents even if nuts are damaged by connecting to the bracket of a pallet a load-bearing nut that is threaded into a rotating threaded rod, and threading a free nut around the rotating threaded rod of the load bearing nut, the free nut stopping rotation on contact with the bracket. CONSTITUTION: Rotation of one rotating threaded rod 5 is transmitted to the other rotating threaded rod 5 via a chain 7 by rotation of a motor 8. Then a load bearing nut 9 secured to a vertical bracket 11 supporting a vehicle carrying pallet 4 receives the rotation of the threaded rod 5, and raises or lowers the pallet 4 via the bracket 11. When the pallet with a vehicle thereon is raised or lowered, the nut 9 secured to the bracket 11 receives all the loads of the pallet 4 and the vehicle. A free nut 10 receives the rotation of the threaded rod 5 but is not secured to the bracket 11 and stops the rotation on contact. The pallet 4 is thus raised and lowered while in an unloaded state in which no loads are applied thereto. Therefore, even if the nut 9 drops the nut 10 receives it, whereby the pallet 4 can be prevented from dropping completely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-story parking apparatus, and more specifically, a pallet for mounting on a vehicle is attached to a nut screwed to a rotary screw in a column, and the pallet is mounted on the column by rotationally driving the rotary screw. The present invention relates to an improvement of a multi-level parking device that moves up and down along the road.

[0002]

2. Description of the Related Art As a conventional three-dimensional parking apparatus, a rotary screw is arranged in a support, a nut mounted on the rotary screw is attached to a pallet for mounting a vehicle, and the rotary screw drives the rotary screw to drive the nut through a nut. A three-dimensional parking device for raising and lowering a pallet is known, for example, from Japanese Utility Model Laid-Open No. 4-76876.

[0003]

However, in such a three-dimensional parking apparatus, a pallet for mounting a vehicle is attached to a nut screwed with a rotary screw, and the load of the pallet and the vehicle is supported by the rotational drive of the rotary screw. Since the nut moves up and down, this nut always receives a large load, and there is a possibility that the screw groove may be damaged due to wear. And, if any one of the rotating rods or the screw groove of the nut is damaged due to wear,
The screw groove of the nut on the other rotary screw will also be damaged, causing a serious accident that the pallet will drop.Therefore, a safety measure that can prevent an accident even if the nut that is always loaded is worn and damaged. Must be taken.

[0004]

According to the present invention, as concrete means for solving the problems in the conventional three-dimensional parking apparatus as described above, the rotating screw rods are vertically arranged in parallel columns, respectively. In a three-dimensional parking device in which a vehicle-mounted pallet is attached to a load receiving nut that is screwed to these rotary screw rods, and the pallet is moved up and down along a column by the rotational drive of each rotary screw rod, a load receiver screwed to the rotary screw rod Connect and fix the nut to the vertical bracket of the pallet,
A free nut, which is not fixed to the vertical bracket and which is prevented from rotating from the rotary screw by contact with the bracket, is screwed onto the rotary screw below the load receiving nut.

[0005]

In this multi-level parking apparatus, the load receiving nut fixed to the vertical bracket for supporting the vehicle mounting pallet is screwed with the rotary screw, and the pallet moves up and down by the rotation of the rotary screw. It will be responsible for the pallet and vehicle loads. Further, since another nut screwed into the rotary screw under the load receiving nut is also prevented from rotating from the rotary screw by contact with the vertical bracket, like the load receiving nut, it is always rotated by the rotation of the rotary screw. Move up and down along the screw rod.

However, unlike the upper load receiving nut, the lower nut is not fixed to the vertical bracket and is simply prevented from rotating by the rotating screw rod by contact with the bracket, so that the lower nut is moved up and down. , Lifts up and down without any load from the vertical bracket without receiving the load of the vehicle mounting pallet. Therefore, this free nut is not damaged like the load receiving nut when moving up and down, and even if the upper load receiving nut is damaged due to long-term use and falls, the free nut is screwed to the rotary screw rod. To support the load bearing nut safely.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the multi-level parking system of the present invention will be described with reference to the embodiments shown in the drawings. As shown in FIGS. 2 and 3, this system comprises a pair of left and right members integrally connected by both ends of a connecting member 2. It is composed of a pair of left and right columns 3 standing upright on a parallel fixed base 1, and a pallet 4 for mounting on a vehicle that moves up and down along these columns 3.

Both columns 3 are made of H-shaped steel in which a web 3a is arranged in a direction parallel to the length direction of the fixed base 1. Each of the columns 3 has a rotary screw rod rotatably attached to the inside of the web 3a. 5 are arranged. These rotating screw rods 5 connect the sprocket 6 provided at the lower end to the connecting member 2 respectively.
The rotation of the motor 8 attached to the upper end of one of the support columns 3 is transmitted to the upper end of the one rotating screw rod 5 so that the left and right rotating screw rods 5 respectively move at the same speed and in the same direction. It is designed to rotate.

As shown in FIG. 1, the rotary screw rod 5 has
A pair of upper and lower load bearing nuts 9 and free nuts 10 are screwed together at intervals, and the upper load bearing nuts 9 are vertical brackets 11 for supporting the pallets 4 arranged inside the support columns 3. Is fixed to the surface of the vertical bracket 11 through a bolt 12, and the lower free nut 10 is arranged so that its outer surface comes into contact with the surface of the vertical bracket 11 to prevent rotation from the rotary screw 5.

Further, on both side surfaces of the vertical bracket 11, there are provided guide rollers 13 which come into contact with the outside of the flange 3b of the column 3, and the load receiving nut 9 is provided.
A window hole 14 is provided below the mounting position for checking the distance between the load receiving nut 9 and the free nut 10 from the outside.

When the rotation of one rotation screw 5 is transmitted to the other rotation screw 5 through the chain 7 by the rotation of the motor 8, the load receiving nut 9 fixed to the vertical bracket 11 supporting the pallet 4 is rotated. In response to the rotation of 5, the vehicle mounting pallet 4 is moved up and down via the vertical bracket 11.

When the pallet 4 equipped with a vehicle is raised or lowered,
Since the load receiving nut 9 fixed to the vertical bracket 11 receives the rotation of the rotary screw 5, the load receiving nut 9 receives all the load of the pallet 4 and the vehicle. On the other hand, the lower free nut 10 receives the rotation of the rotary screw rod 5 similarly to the load receiving nut 9, but the nut 10 is not fixed to the vertical bracket 11, but the outer surface is simply rotated by the contact with the bracket 11. Since only rotation from the screw rod 5 is blocked, the vertical bracket 11 is lifted up and down without any load from the vertical bracket 11 when it is lifted.

[0013]

As described above, in the three-dimensional parking apparatus of the present invention, the vertical bracket 11 of the vehicle mounting pallet 4 is
The vertical bracket 11 is provided below the load receiving nut 9 that supports the load of the pallet 4 by receiving the rotation of the rotary screw 5.
Since the free nut 10 that is not fixed to the bracket 11 and that prevents the rotation of the rotary screw 5 by contact with the bracket 11 is provided, the load receiving nut 9 and the free nut 10 are rotated along the rotary screw 5 by the rotation of the rotary screw 5. Move up and down at the same time,
The load of the vehicle mounting pallet 4 is received only by the load receiving nut 9, and the free nut 10 moves up and down without receiving any load.

Therefore, the load receiving nut 9 is constantly subjected to the load of the vehicle-mounted pallet 4 in relation to the rotary screw 5, so that the screw groove may be worn and damaged after long-term use. Even if there is, the free nut 10 moves up and down without being subjected to any load, so that the free nut 10 will not be damaged by abrasion even after long-term use. Therefore, in this device, even if the screw groove of the load receiving nut 9 is worn out after use for a long period of time, and any one or a plurality of load receiving nuts 9 drop off from the rotary screw rod 5, the device is damaged by the wear. The free lower nut 10 which is not damaged is the damaged load bearing nut 9
Can be reliably received to prevent the vehicle-mounted pallet 4 from completely falling, and the safety of this type of device can be ensured.

Further, the load receiving nut 9 and the free nut 1
In the case where the vertical bracket 11 for screwing the nuts 0 into the rotary screw 5 at intervals and for preventing the rotation of these nuts is provided with the window hole 14 for confirming the distance between the nuts, the load receiving nut 9 is If the nuts are overlapped from the outside through the window hole 14 and the load receiving nut 9 is received by the lower free nut 10 when it is damaged by abrasion and falls off the rotary screw 5, it can be confirmed immediately. By doing so, it is possible to reliably prevent the occurrence of a serious accident.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a main part of a multilevel parking apparatus according to the present invention.

FIG. 2 is a side view showing the configuration of the entire apparatus.

FIG. 3 is a plan view showing the configuration of the entire apparatus.

FIG. 4 is a perspective view showing a configuration of a main part.

[Explanation of symbols]

1: fixed base, 2: connecting material, 3: support, 3a:
Web, 3b: Flange, 4: Vehicle-mounted pallet,
5: Rotating screw rod, 6: Sprocket, 7: Chain,
8: Motor, 9: Load receiving nut, 10: Free nut, 11: Vertical bracket, 12: Bolt, 1
3: Guide roller, 14: Window hole,

Claims (2)

[Claims] 1. A pallet for mounting on a vehicle is attached to load receiving nuts screwed to these rotating rods, the rotating rods are vertically arranged in parallel columns, and the pallet is driven by rotating the rotating rods. In a multi-level parking device that moves up and down along columns, a load receiving nut screwed into a rotating screw is connected and fixed to a vertical bracket of the pallet, and the vertical bracket is fixed to the rotating screw below the load receiving nut. A multi-level parking device characterized in that a free nut that is prevented from rotating from a rotating screw rod by being brought into contact with the bracket is screwed thereinto. 2. A load receiving nut fixed to the vertical bracket and a free nut not fixed to the vertical bracket are provided with a space, and a window hole is formed in the vertical bracket to check the space between the both nuts. Paragraph 1 multi-level parking device.